--- /dev/null
+/*
+ * Copyright (c) 2010 Daniel Mack <daniel@caiaq.de>
+ *
+ * This software is distributed under the terms of the GNU General Public
+ * License ("GPL") version 2, as published by the Free Software Foundation.
+ *
+ * This file holds USB constants and structures defined
+ * by the USB Device Class Definition for Audio Devices in version 2.0.
+ * Comments below reference relevant sections of the documents contained
+ * in http://www.usb.org/developers/devclass_docs/Audio2.0_final.zip
+ */
+
+#ifndef __LINUX_USB_AUDIO_V2_H
+#define __LINUX_USB_AUDIO_V2_H
+
+#include <linux/types.h>
+
+/* v1.0 and v2.0 of this standard have many things in common. For the rest
+ * of the definitions, please refer to audio.h */
+
+/* 4.7.2.1 Clock Source Descriptor */
+
+struct uac_clock_source_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDescriptorSubtype;
+ __u8 bClockID;
+ __u8 bmAttributes;
+ __u8 bmControls;
+ __u8 bAssocTerminal;
+ __u8 iClockSource;
+} __attribute__((packed));
+
+/* 4.7.2.2 Clock Source Descriptor */
+
+struct uac_clock_selector_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDescriptorSubtype;
+ __u8 bClockID;
+ __u8 bNrInPins;
+ __u8 bmControls;
+ __u8 baCSourceID[];
+} __attribute__((packed));
+
+/* 4.7.2.4 Input terminal descriptor */
+
+struct uac2_input_terminal_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDescriptorSubtype;
+ __u8 bTerminalID;
+ __u16 wTerminalType;
+ __u8 bAssocTerminal;
+ __u8 bCSourceID;
+ __u8 bNrChannels;
+ __u32 bmChannelConfig;
+ __u8 iChannelNames;
+ __u16 bmControls;
+ __u8 iTerminal;
+} __attribute__((packed));
+
+/* 4.7.2.5 Output terminal descriptor */
+
+struct uac2_output_terminal_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDescriptorSubtype;
+ __u8 bTerminalID;
+ __u16 wTerminalType;
+ __u8 bAssocTerminal;
+ __u8 bSourceID;
+ __u8 bCSourceID;
+ __u16 bmControls;
+ __u8 iTerminal;
+} __attribute__((packed));
+
+
+
+/* 4.7.2.8 Feature Unit Descriptor */
+
+struct uac2_feature_unit_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDescriptorSubtype;
+ __u8 bUnitID;
+ __u8 bSourceID;
+ /* bmaControls is actually u32,
+ * but u8 is needed for the hybrid parser */
+ __u8 bmaControls[0]; /* variable length */
+} __attribute__((packed));
+
+/* 4.9.2 Class-Specific AS Interface Descriptor */
+
+struct uac_as_header_descriptor_v2 {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDescriptorSubtype;
+ __u8 bTerminalLink;
+ __u8 bmControls;
+ __u8 bFormatType;
+ __u32 bmFormats;
+ __u8 bNrChannels;
+ __u32 bmChannelConfig;
+ __u8 iChannelNames;
+} __attribute__((packed));
+
+
+/* A.7 Audio Function Category Codes */
+#define UAC2_FUNCTION_SUBCLASS_UNDEFINED 0x00
+#define UAC2_FUNCTION_DESKTOP_SPEAKER 0x01
+#define UAC2_FUNCTION_HOME_THEATER 0x02
+#define UAC2_FUNCTION_MICROPHONE 0x03
+#define UAC2_FUNCTION_HEADSET 0x04
+#define UAC2_FUNCTION_TELEPHONE 0x05
+#define UAC2_FUNCTION_CONVERTER 0x06
+#define UAC2_FUNCTION_SOUND_RECORDER 0x07
+#define UAC2_FUNCTION_IO_BOX 0x08
+#define UAC2_FUNCTION_MUSICAL_INSTRUMENT 0x09
+#define UAC2_FUNCTION_PRO_AUDIO 0x0a
+#define UAC2_FUNCTION_AUDIO_VIDEO 0x0b
+#define UAC2_FUNCTION_CONTROL_PANEL 0x0c
+#define UAC2_FUNCTION_OTHER 0xff
+
+/* A.9 Audio Class-Specific AC Interface Descriptor Subtypes */
+/* see audio.h for the rest, which is identical to v1 */
+#define UAC2_EFFECT_UNIT 0x07
+#define UAC2_PROCESSING_UNIT_V2 0x08
+#define UAC2_EXTENSION_UNIT_V2 0x09
+#define UAC2_CLOCK_SOURCE 0x0a
+#define UAC2_CLOCK_SELECTOR 0x0b
+#define UAC2_CLOCK_MULTIPLIER 0x0c
+#define UAC2_SAMPLE_RATE_CONVERTER 0x0d
+
+/* A.10 Audio Class-Specific AS Interface Descriptor Subtypes */
+/* see audio.h for the rest, which is identical to v1 */
+#define UAC2_ENCODER 0x03
+#define UAC2_DECODER 0x04
+
+/* A.11 Effect Unit Effect Types */
+#define UAC2_EFFECT_UNDEFINED 0x00
+#define UAC2_EFFECT_PARAM_EQ 0x01
+#define UAC2_EFFECT_REVERB 0x02
+#define UAC2_EFFECT_MOD_DELAY 0x03
+#define UAC2_EFFECT_DYN_RANGE_COMP 0x04
+
+/* A.12 Processing Unit Process Types */
+#define UAC2_PROCESS_UNDEFINED 0x00
+#define UAC2_PROCESS_UP_DOWNMIX 0x01
+#define UAC2_PROCESS_DOLBY_PROLOCIC 0x02
+#define UAC2_PROCESS_STEREO_EXTENDER 0x03
+
+/* A.14 Audio Class-Specific Request Codes */
+#define UAC2_CS_CUR 0x01
+#define UAC2_CS_RANGE 0x02
+
+/* A.15 Encoder Type Codes */
+#define UAC2_ENCODER_UNDEFINED 0x00
+#define UAC2_ENCODER_OTHER 0x01
+#define UAC2_ENCODER_MPEG 0x02
+#define UAC2_ENCODER_AC3 0x03
+#define UAC2_ENCODER_WMA 0x04
+#define UAC2_ENCODER_DTS 0x05
+
+/* A.16 Decoder Type Codes */
+#define UAC2_DECODER_UNDEFINED 0x00
+#define UAC2_DECODER_OTHER 0x01
+#define UAC2_DECODER_MPEG 0x02
+#define UAC2_DECODER_AC3 0x03
+#define UAC2_DECODER_WMA 0x04
+#define UAC2_DECODER_DTS 0x05
+
+/* A.17.1 Clock Source Control Selectors */
+#define UAC2_CS_UNDEFINED 0x00
+#define UAC2_CS_CONTROL_SAM_FREQ 0x01
+#define UAC2_CS_CONTROL_CLOCK_VALID 0x02
+
+/* A.17.2 Clock Selector Control Selectors */
+#define UAC2_CX_UNDEFINED 0x00
+#define UAC2_CX_CLOCK_SELECTOR 0x01
+
+/* A.17.3 Clock Multiplier Control Selectors */
+#define UAC2_CM_UNDEFINED 0x00
+#define UAC2_CM_NUMERATOR 0x01
+#define UAC2_CM_DENOMINTATOR 0x02
+
+/* A.17.4 Terminal Control Selectors */
+#define UAC2_TE_UNDEFINED 0x00
+#define UAC2_TE_COPY_PROTECT 0x01
+#define UAC2_TE_CONNECTOR 0x02
+#define UAC2_TE_OVERLOAD 0x03
+#define UAC2_TE_CLUSTER 0x04
+#define UAC2_TE_UNDERFLOW 0x05
+#define UAC2_TE_OVERFLOW 0x06
+#define UAC2_TE_LATENCY 0x07
+
+/* A.17.5 Mixer Control Selectors */
+#define UAC2_MU_UNDEFINED 0x00
+#define UAC2_MU_MIXER 0x01
+#define UAC2_MU_CLUSTER 0x02
+#define UAC2_MU_UNDERFLOW 0x03
+#define UAC2_MU_OVERFLOW 0x04
+#define UAC2_MU_LATENCY 0x05
+
+/* A.17.6 Selector Control Selectors */
+#define UAC2_SU_UNDEFINED 0x00
+#define UAC2_SU_SELECTOR 0x01
+#define UAC2_SU_LATENCY 0x02
+
+/* A.17.7 Feature Unit Control Selectors */
+/* see audio.h for the rest, which is identical to v1 */
+#define UAC2_FU_INPUT_GAIN 0x0b
+#define UAC2_FU_INPUT_GAIN_PAD 0x0c
+#define UAC2_FU_PHASE_INVERTER 0x0d
+#define UAC2_FU_UNDERFLOW 0x0e
+#define UAC2_FU_OVERFLOW 0x0f
+#define UAC2_FU_LATENCY 0x10
+
+/* A.17.8.1 Parametric Equalizer Section Effect Unit Control Selectors */
+#define UAC2_PE_UNDEFINED 0x00
+#define UAC2_PE_ENABLE 0x01
+#define UAC2_PE_CENTERFREQ 0x02
+#define UAC2_PE_QFACTOR 0x03
+#define UAC2_PE_GAIN 0x04
+#define UAC2_PE_UNDERFLOW 0x05
+#define UAC2_PE_OVERFLOW 0x06
+#define UAC2_PE_LATENCY 0x07
+
+/* A.17.8.2 Reverberation Effect Unit Control Selectors */
+#define UAC2_RV_UNDEFINED 0x00
+#define UAC2_RV_ENABLE 0x01
+#define UAC2_RV_TYPE 0x02
+#define UAC2_RV_LEVEL 0x03
+#define UAC2_RV_TIME 0x04
+#define UAC2_RV_FEEDBACK 0x05
+#define UAC2_RV_PREDELAY 0x06
+#define UAC2_RV_DENSITY 0x07
+#define UAC2_RV_HIFREQ_ROLLOFF 0x08
+#define UAC2_RV_UNDERFLOW 0x09
+#define UAC2_RV_OVERFLOW 0x0a
+#define UAC2_RV_LATENCY 0x0b
+
+/* A.17.8.3 Modulation Delay Effect Control Selectors */
+#define UAC2_MD_UNDEFINED 0x00
+#define UAC2_MD_ENABLE 0x01
+#define UAC2_MD_BALANCE 0x02
+#define UAC2_MD_RATE 0x03
+#define UAC2_MD_DEPTH 0x04
+#define UAC2_MD_TIME 0x05
+#define UAC2_MD_FEEDBACK 0x06
+#define UAC2_MD_UNDERFLOW 0x07
+#define UAC2_MD_OVERFLOW 0x08
+#define UAC2_MD_LATENCY 0x09
+
+/* A.17.8.4 Dynamic Range Compressor Effect Unit Control Selectors */
+#define UAC2_DR_UNDEFINED 0x00
+#define UAC2_DR_ENABLE 0x01
+#define UAC2_DR_COMPRESSION_RATE 0x02
+#define UAC2_DR_MAXAMPL 0x03
+#define UAC2_DR_THRESHOLD 0x04
+#define UAC2_DR_ATTACK_TIME 0x05
+#define UAC2_DR_RELEASE_TIME 0x06
+#define UAC2_DR_UNDEFLOW 0x07
+#define UAC2_DR_OVERFLOW 0x08
+#define UAC2_DR_LATENCY 0x09
+
+/* A.17.9.1 Up/Down-mix Processing Unit Control Selectors */
+#define UAC2_UD_UNDEFINED 0x00
+#define UAC2_UD_ENABLE 0x01
+#define UAC2_UD_MODE_SELECT 0x02
+#define UAC2_UD_CLUSTER 0x03
+#define UAC2_UD_UNDERFLOW 0x04
+#define UAC2_UD_OVERFLOW 0x05
+#define UAC2_UD_LATENCY 0x06
+
+/* A.17.9.2 Dolby Prologic[tm] Processing Unit Control Selectors */
+#define UAC2_DP_UNDEFINED 0x00
+#define UAC2_DP_ENABLE 0x01
+#define UAC2_DP_MODE_SELECT 0x02
+#define UAC2_DP_CLUSTER 0x03
+#define UAC2_DP_UNDERFFLOW 0x04
+#define UAC2_DP_OVERFLOW 0x05
+#define UAC2_DP_LATENCY 0x06
+
+/* A.17.9.3 Stereo Expander Processing Unit Control Selectors */
+#define UAC2_ST_EXT_UNDEFINED 0x00
+#define UAC2_ST_EXT_ENABLE 0x01
+#define UAC2_ST_EXT_WIDTH 0x02
+#define UAC2_ST_EXT_UNDEFLOW 0x03
+#define UAC2_ST_EXT_OVERFLOW 0x04
+#define UAC2_ST_EXT_LATENCY 0x05
+
+/* A.17.10 Extension Unit Control Selectors */
+#define UAC2_XU_UNDEFINED 0x00
+#define UAC2_XU_ENABLE 0x01
+#define UAC2_XU_CLUSTER 0x02
+#define UAC2_XU_UNDERFLOW 0x03
+#define UAC2_XU_OVERFLOW 0x04
+#define UAC2_XU_LATENCY 0x05
+
+/* A.17.11 AudioStreaming Interface Control Selectors */
+#define UAC2_AS_UNDEFINED 0x00
+#define UAC2_AS_ACT_ALT_SETTING 0x01
+#define UAC2_AS_VAL_ALT_SETTINGS 0x02
+#define UAC2_AS_AUDIO_DATA_FORMAT 0x03
+
+/* A.17.12 Encoder Control Selectors */
+#define UAC2_EN_UNDEFINED 0x00
+#define UAC2_EN_BIT_RATE 0x01
+#define UAC2_EN_QUALITY 0x02
+#define UAC2_EN_VBR 0x03
+#define UAC2_EN_TYPE 0x04
+#define UAC2_EN_UNDERFLOW 0x05
+#define UAC2_EN_OVERFLOW 0x06
+#define UAC2_EN_ENCODER_ERROR 0x07
+#define UAC2_EN_PARAM1 0x08
+#define UAC2_EN_PARAM2 0x09
+#define UAC2_EN_PARAM3 0x0a
+#define UAC2_EN_PARAM4 0x0b
+#define UAC2_EN_PARAM5 0x0c
+#define UAC2_EN_PARAM6 0x0d
+#define UAC2_EN_PARAM7 0x0e
+#define UAC2_EN_PARAM8 0x0f
+
+/* A.17.13.1 MPEG Decoder Control Selectors */
+#define UAC2_MPEG_UNDEFINED 0x00
+#define UAC2_MPEG_DUAL_CHANNEL 0x01
+#define UAC2_MPEG_SECOND_STEREO 0x02
+#define UAC2_MPEG_MULTILINGUAL 0x03
+#define UAC2_MPEG_DYN_RANGE 0x04
+#define UAC2_MPEG_SCALING 0x05
+#define UAC2_MPEG_HILO_SCALING 0x06
+#define UAC2_MPEG_UNDERFLOW 0x07
+#define UAC2_MPEG_OVERFLOW 0x08
+#define UAC2_MPEG_DECODER_ERROR 0x09
+
+/* A17.13.2 AC3 Decoder Control Selectors */
+#define UAC2_AC3_UNDEFINED 0x00
+#define UAC2_AC3_MODE 0x01
+#define UAC2_AC3_DYN_RANGE 0x02
+#define UAC2_AC3_SCALING 0x03
+#define UAC2_AC3_HILO_SCALING 0x04
+#define UAC2_AC3_UNDERFLOW 0x05
+#define UAC2_AC3_OVERFLOW 0x06
+#define UAC2_AC3_DECODER_ERROR 0x07
+
+/* A17.13.3 WMA Decoder Control Selectors */
+#define UAC2_WMA_UNDEFINED 0x00
+#define UAC2_WMA_UNDERFLOW 0x01
+#define UAC2_WMA_OVERFLOW 0x02
+#define UAC2_WMA_DECODER_ERROR 0x03
+
+/* A17.13.4 DTS Decoder Control Selectors */
+#define UAC2_DTS_UNDEFINED 0x00
+#define UAC2_DTS_UNDERFLOW 0x01
+#define UAC2_DTS_OVERFLOW 0x02
+#define UAC2_DTS_DECODER_ERROR 0x03
+
+/* A17.14 Endpoint Control Selectors */
+#define UAC2_EP_CS_UNDEFINED 0x00
+#define UAC2_EP_CS_PITCH 0x01
+#define UAC2_EP_CS_DATA_OVERRUN 0x02
+#define UAC2_EP_CS_DATA_UNDERRUN 0x03
+
+#endif /* __LINUX_USB_AUDIO_V2_H */
+
* Comments below reference relevant sections of that document:
*
* http://www.usb.org/developers/devclass_docs/audio10.pdf
+ *
+ * Types and defines in this file are either specific to version 1.0 of
+ * this standard or common for newer versions.
*/
#ifndef __LINUX_USB_AUDIO_H
#include <linux/types.h>
+/* bInterfaceProtocol values to denote the version of the standard used */
+#define UAC_VERSION_1 0x00
+#define UAC_VERSION_2 0x20
+
/* A.2 Audio Interface Subclass Codes */
#define USB_SUBCLASS_AUDIOCONTROL 0x01
#define USB_SUBCLASS_AUDIOSTREAMING 0x02
#define USB_SUBCLASS_MIDISTREAMING 0x03
-#define UAC_VERSION_1 0x00
-#define UAC_VERSION_2 0x20
-
/* A.5 Audio Class-Specific AC Interface Descriptor Subtypes */
#define UAC_HEADER 0x01
#define UAC_INPUT_TERMINAL 0x02
#define UAC_PROCESSING_UNIT_V1 0x07
#define UAC_EXTENSION_UNIT_V1 0x08
-/* UAC v2.0 types */
-#define UAC_EFFECT_UNIT 0x07
-#define UAC_PROCESSING_UNIT_V2 0x08
-#define UAC_EXTENSION_UNIT_V2 0x09
-#define UAC_CLOCK_SOURCE 0x0a
-#define UAC_CLOCK_SELECTOR 0x0b
-#define UAC_CLOCK_MULTIPLIER 0x0c
-#define UAC_SAMPLE_RATE_CONVERTER 0x0d
-
/* A.6 Audio Class-Specific AS Interface Descriptor Subtypes */
#define UAC_AS_GENERAL 0x01
#define UAC_FORMAT_TYPE 0x02
#define UAC_GET_STAT 0xff
-/* Audio class v2.0 handles all the parameter calls differently */
-#define UAC2_CS_CUR 0x01
-#define UAC2_CS_RANGE 0x02
-
/* MIDI - A.1 MS Class-Specific Interface Descriptor Subtypes */
#define UAC_MS_HEADER 0x01
#define UAC_MIDI_IN_JACK 0x02
__u8 iFeature; \
} __attribute__ ((packed))
+/* 4.3.2.3 Mixer Unit Descriptor */
+struct uac_mixer_unit_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDescriptorSubtype;
+ __u8 bUnitID;
+ __u8 bNrInPins;
+ __u8 baSourceID[];
+} __attribute__ ((packed));
+
+static inline __u8 uac_mixer_unit_bNrChannels(struct uac_mixer_unit_descriptor *desc)
+{
+ return desc->baSourceID[desc->bNrInPins];
+}
+
+static inline __u32 uac_mixer_unit_wChannelConfig(struct uac_mixer_unit_descriptor *desc,
+ int protocol)
+{
+ if (protocol == UAC_VERSION_1)
+ return (desc->baSourceID[desc->bNrInPins + 2] << 8) |
+ desc->baSourceID[desc->bNrInPins + 1];
+ else
+ return (desc->baSourceID[desc->bNrInPins + 4] << 24) |
+ (desc->baSourceID[desc->bNrInPins + 3] << 16) |
+ (desc->baSourceID[desc->bNrInPins + 2] << 8) |
+ (desc->baSourceID[desc->bNrInPins + 1]);
+}
+
+static inline __u8 uac_mixer_unit_iChannelNames(struct uac_mixer_unit_descriptor *desc,
+ int protocol)
+{
+ return (protocol == UAC_VERSION_1) ?
+ desc->baSourceID[desc->bNrInPins + 3] :
+ desc->baSourceID[desc->bNrInPins + 5];
+}
+
+static inline __u8 *uac_mixer_unit_bmControls(struct uac_mixer_unit_descriptor *desc,
+ int protocol)
+{
+ return (protocol == UAC_VERSION_1) ?
+ &desc->baSourceID[desc->bNrInPins + 4] :
+ &desc->baSourceID[desc->bNrInPins + 6];
+}
+
+static inline __u8 uac_mixer_unit_iMixer(struct uac_mixer_unit_descriptor *desc)
+{
+ __u8 *raw = (__u8 *) desc;
+ return raw[desc->bLength - 1];
+}
+
+/* 4.3.2.4 Selector Unit Descriptor */
+struct uac_selector_unit_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDescriptorSubtype;
+ __u8 bUintID;
+ __u8 bNrInPins;
+ __u8 baSourceID[];
+} __attribute__ ((packed));
+
+static inline __u8 uac_selector_unit_iSelector(struct uac_selector_unit_descriptor *desc)
+{
+ __u8 *raw = (__u8 *) desc;
+ return raw[desc->bLength - 1];
+}
+
+/* 4.3.2.5 Feature Unit Descriptor */
+struct uac_feature_unit_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDescriptorSubtype;
+ __u8 bUnitID;
+ __u8 bSourceID;
+ __u8 bControlSize;
+ __u8 bmaControls[0]; /* variable length */
+} __attribute__((packed));
+
+static inline __u8 uac_feature_unit_iFeature(struct uac_feature_unit_descriptor *desc)
+{
+ __u8 *raw = (__u8 *) desc;
+ return raw[desc->bLength - 1];
+}
+
+/* 4.3.2.6 Processing Unit Descriptors */
+struct uac_processing_unit_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDescriptorSubtype;
+ __u8 bUnitID;
+ __u16 wProcessType;
+ __u8 bNrInPins;
+ __u8 baSourceID[];
+} __attribute__ ((packed));
+
+static inline __u8 uac_processing_unit_bNrChannels(struct uac_processing_unit_descriptor *desc)
+{
+ return desc->baSourceID[desc->bNrInPins];
+}
+
+static inline __u32 uac_processing_unit_wChannelConfig(struct uac_processing_unit_descriptor *desc,
+ int protocol)
+{
+ if (protocol == UAC_VERSION_1)
+ return (desc->baSourceID[desc->bNrInPins + 2] << 8) |
+ desc->baSourceID[desc->bNrInPins + 1];
+ else
+ return (desc->baSourceID[desc->bNrInPins + 4] << 24) |
+ (desc->baSourceID[desc->bNrInPins + 3] << 16) |
+ (desc->baSourceID[desc->bNrInPins + 2] << 8) |
+ (desc->baSourceID[desc->bNrInPins + 1]);
+}
+
+static inline __u8 uac_processing_unit_iChannelNames(struct uac_processing_unit_descriptor *desc,
+ int protocol)
+{
+ return (protocol == UAC_VERSION_1) ?
+ desc->baSourceID[desc->bNrInPins + 3] :
+ desc->baSourceID[desc->bNrInPins + 5];
+}
+
+static inline __u8 uac_processing_unit_bControlSize(struct uac_processing_unit_descriptor *desc,
+ int protocol)
+{
+ return (protocol == UAC_VERSION_1) ?
+ desc->baSourceID[desc->bNrInPins + 4] :
+ desc->baSourceID[desc->bNrInPins + 6];
+}
+
+static inline __u8 *uac_processing_unit_bmControls(struct uac_processing_unit_descriptor *desc,
+ int protocol)
+{
+ return (protocol == UAC_VERSION_1) ?
+ &desc->baSourceID[desc->bNrInPins + 5] :
+ &desc->baSourceID[desc->bNrInPins + 7];
+}
+
+static inline __u8 uac_processing_unit_iProcessing(struct uac_processing_unit_descriptor *desc,
+ int protocol)
+{
+ __u8 control_size = uac_processing_unit_bControlSize(desc, protocol);
+ return desc->baSourceID[desc->bNrInPins + control_size];
+}
+
+static inline __u8 *uac_processing_unit_specific(struct uac_processing_unit_descriptor *desc,
+ int protocol)
+{
+ __u8 control_size = uac_processing_unit_bControlSize(desc, protocol);
+ return &desc->baSourceID[desc->bNrInPins + control_size + 1];
+}
+
/* 4.5.2 Class-Specific AS Interface Descriptor */
struct uac_as_header_descriptor_v1 {
__u8 bLength; /* in bytes: 7 */
__le16 wFormatTag; /* The Audio Data Format */
} __attribute__ ((packed));
-struct uac_as_header_descriptor_v2 {
- __u8 bLength;
- __u8 bDescriptorType;
- __u8 bDescriptorSubtype;
- __u8 bTerminalLink;
- __u8 bmControls;
- __u8 bFormatType;
- __u32 bmFormats;
- __u8 bNrChannels;
- __u32 bmChannelConfig;
- __u8 iChannelNames;
-} __attribute__((packed));
-
#define UAC_DT_AS_HEADER_SIZE 7
/* Formats - A.1.1 Audio Data Format Type I Codes */
__u8 bSideBandProtocol;
} __attribute__((packed));
-
/* Formats - Audio Data Format Type I Codes */
#define UAC_FORMAT_TYPE_II_MPEG 0x1001
#define UAC_EP_CS_ATTR_PITCH_CONTROL 0x02
#define UAC_EP_CS_ATTR_FILL_MAX 0x80
-/* Audio class v2.0: CLOCK_SOURCE descriptor */
-
-struct uac_clock_source_descriptor {
- __u8 bLength;
- __u8 bDescriptorType;
- __u8 bDescriptorSubtype;
- __u8 bClockID;
- __u8 bmAttributes;
- __u8 bmControls;
- __u8 bAssocTerminal;
- __u8 iClockSource;
-} __attribute__((packed));
-
/* A.10.2 Feature Unit Control Selectors */
-struct uac_feature_unit_descriptor {
- __u8 bLength;
- __u8 bDescriptorType;
- __u8 bDescriptorSubtype;
- __u8 bUnitID;
- __u8 bSourceID;
- __u8 bControlSize;
- __u8 controls[0]; /* variable length */
-} __attribute__((packed));
-
#define UAC_FU_CONTROL_UNDEFINED 0x00
#define UAC_MUTE_CONTROL 0x01
#define UAC_VOLUME_CONTROL 0x02
# Makefile for ALSA
#
-snd-usb-audio-objs := usbaudio.o usbmixer.o
-snd-usb-lib-objs := usbmidi.o
-snd-ua101-objs := ua101.o
+snd-usb-audio-objs := card.o \
+ mixer.o \
+ mixer_quirks.o \
+ proc.o \
+ quirks.o \
+ format.o \
+ endpoint.o \
+ urb.o \
+ pcm.o \
+ helper.o
+
+snd-usbmidi-lib-objs := midi.o
# Toplevel Module Dependency
-obj-$(CONFIG_SND_USB_AUDIO) += snd-usb-audio.o snd-usb-lib.o
-obj-$(CONFIG_SND_USB_UA101) += snd-ua101.o snd-usb-lib.o
-obj-$(CONFIG_SND_USB_USX2Y) += snd-usb-lib.o
-obj-$(CONFIG_SND_USB_US122L) += snd-usb-lib.o
+obj-$(CONFIG_SND_USB_AUDIO) += snd-usb-audio.o snd-usbmidi-lib.o
+
+obj-$(CONFIG_SND_USB_UA101) += snd-usbmidi-lib.o
+obj-$(CONFIG_SND_USB_USX2Y) += snd-usbmidi-lib.o
+obj-$(CONFIG_SND_USB_US122L) += snd-usbmidi-lib.o
-obj-$(CONFIG_SND) += usx2y/ caiaq/
+obj-$(CONFIG_SND) += misc/ usx2y/ caiaq/
--- /dev/null
+/*
+ * (Tentative) USB Audio Driver for ALSA
+ *
+ * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
+ *
+ * Many codes borrowed from audio.c by
+ * Alan Cox (alan@lxorguk.ukuu.org.uk)
+ * Thomas Sailer (sailer@ife.ee.ethz.ch)
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ *
+ * NOTES:
+ *
+ * - async unlink should be used for avoiding the sleep inside lock.
+ * 2.4.22 usb-uhci seems buggy for async unlinking and results in
+ * oops. in such a cse, pass async_unlink=0 option.
+ * - the linked URBs would be preferred but not used so far because of
+ * the instability of unlinking.
+ * - type II is not supported properly. there is no device which supports
+ * this type *correctly*. SB extigy looks as if it supports, but it's
+ * indeed an AC3 stream packed in SPDIF frames (i.e. no real AC3 stream).
+ */
+
+
+#include <linux/bitops.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/usb.h>
+#include <linux/moduleparam.h>
+#include <linux/mutex.h>
+#include <linux/usb/audio.h>
+#include <linux/usb/audio-v2.h>
+
+#include <sound/core.h>
+#include <sound/info.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/initval.h>
+
+#include "usbaudio.h"
+#include "card.h"
+#include "midi.h"
+#include "mixer.h"
+#include "proc.h"
+#include "quirks.h"
+#include "endpoint.h"
+#include "helper.h"
+#include "debug.h"
+#include "pcm.h"
+#include "urb.h"
+#include "format.h"
+
+MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
+MODULE_DESCRIPTION("USB Audio");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("{{Generic,USB Audio}}");
+
+
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
+static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
+static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;/* Enable this card */
+/* Vendor/product IDs for this card */
+static int vid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 };
+static int pid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 };
+static int nrpacks = 8; /* max. number of packets per urb */
+static int async_unlink = 1;
+static int device_setup[SNDRV_CARDS]; /* device parameter for this card */
+static int ignore_ctl_error;
+
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "Index value for the USB audio adapter.");
+module_param_array(id, charp, NULL, 0444);
+MODULE_PARM_DESC(id, "ID string for the USB audio adapter.");
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "Enable USB audio adapter.");
+module_param_array(vid, int, NULL, 0444);
+MODULE_PARM_DESC(vid, "Vendor ID for the USB audio device.");
+module_param_array(pid, int, NULL, 0444);
+MODULE_PARM_DESC(pid, "Product ID for the USB audio device.");
+module_param(nrpacks, int, 0644);
+MODULE_PARM_DESC(nrpacks, "Max. number of packets per URB.");
+module_param(async_unlink, bool, 0444);
+MODULE_PARM_DESC(async_unlink, "Use async unlink mode.");
+module_param_array(device_setup, int, NULL, 0444);
+MODULE_PARM_DESC(device_setup, "Specific device setup (if needed).");
+module_param(ignore_ctl_error, bool, 0444);
+MODULE_PARM_DESC(ignore_ctl_error,
+ "Ignore errors from USB controller for mixer interfaces.");
+
+/*
+ * we keep the snd_usb_audio_t instances by ourselves for merging
+ * the all interfaces on the same card as one sound device.
+ */
+
+static DEFINE_MUTEX(register_mutex);
+static struct snd_usb_audio *usb_chip[SNDRV_CARDS];
+static struct usb_driver usb_audio_driver;
+
+/*
+ * disconnect streams
+ * called from snd_usb_audio_disconnect()
+ */
+static void snd_usb_stream_disconnect(struct list_head *head)
+{
+ int idx;
+ struct snd_usb_stream *as;
+ struct snd_usb_substream *subs;
+
+ as = list_entry(head, struct snd_usb_stream, list);
+ for (idx = 0; idx < 2; idx++) {
+ subs = &as->substream[idx];
+ if (!subs->num_formats)
+ return;
+ snd_usb_release_substream_urbs(subs, 1);
+ subs->interface = -1;
+ }
+}
+
+static int snd_usb_create_stream(struct snd_usb_audio *chip, int ctrlif, int interface)
+{
+ struct usb_device *dev = chip->dev;
+ struct usb_host_interface *alts;
+ struct usb_interface_descriptor *altsd;
+ struct usb_interface *iface = usb_ifnum_to_if(dev, interface);
+
+ if (!iface) {
+ snd_printk(KERN_ERR "%d:%u:%d : does not exist\n",
+ dev->devnum, ctrlif, interface);
+ return -EINVAL;
+ }
+
+ if (usb_interface_claimed(iface)) {
+ snd_printdd(KERN_INFO "%d:%d:%d: skipping, already claimed\n",
+ dev->devnum, ctrlif, interface);
+ return -EINVAL;
+ }
+
+ alts = &iface->altsetting[0];
+ altsd = get_iface_desc(alts);
+ if ((altsd->bInterfaceClass == USB_CLASS_AUDIO ||
+ altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC) &&
+ altsd->bInterfaceSubClass == USB_SUBCLASS_MIDISTREAMING) {
+ int err = snd_usbmidi_create(chip->card, iface,
+ &chip->midi_list, NULL);
+ if (err < 0) {
+ snd_printk(KERN_ERR "%d:%u:%d: cannot create sequencer device\n",
+ dev->devnum, ctrlif, interface);
+ return -EINVAL;
+ }
+ usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
+
+ return 0;
+ }
+
+ if ((altsd->bInterfaceClass != USB_CLASS_AUDIO &&
+ altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||
+ altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING) {
+ snd_printdd(KERN_ERR "%d:%u:%d: skipping non-supported interface %d\n",
+ dev->devnum, ctrlif, interface, altsd->bInterfaceClass);
+ /* skip non-supported classes */
+ return -EINVAL;
+ }
+
+ if (snd_usb_get_speed(dev) == USB_SPEED_LOW) {
+ snd_printk(KERN_ERR "low speed audio streaming not supported\n");
+ return -EINVAL;
+ }
+
+ if (! snd_usb_parse_audio_endpoints(chip, interface)) {
+ usb_set_interface(dev, interface, 0); /* reset the current interface */
+ usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/*
+ * parse audio control descriptor and create pcm/midi streams
+ */
+static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif)
+{
+ struct usb_device *dev = chip->dev;
+ struct usb_host_interface *host_iface;
+ struct usb_interface_descriptor *altsd;
+ void *control_header;
+ int i, protocol;
+
+ /* find audiocontrol interface */
+ host_iface = &usb_ifnum_to_if(dev, ctrlif)->altsetting[0];
+ control_header = snd_usb_find_csint_desc(host_iface->extra,
+ host_iface->extralen,
+ NULL, UAC_HEADER);
+ altsd = get_iface_desc(host_iface);
+ protocol = altsd->bInterfaceProtocol;
+
+ if (!control_header) {
+ snd_printk(KERN_ERR "cannot find UAC_HEADER\n");
+ return -EINVAL;
+ }
+
+ switch (protocol) {
+ case UAC_VERSION_1: {
+ struct uac_ac_header_descriptor_v1 *h1 = control_header;
+
+ if (!h1->bInCollection) {
+ snd_printk(KERN_INFO "skipping empty audio interface (v1)\n");
+ return -EINVAL;
+ }
+
+ if (h1->bLength < sizeof(*h1) + h1->bInCollection) {
+ snd_printk(KERN_ERR "invalid UAC_HEADER (v1)\n");
+ return -EINVAL;
+ }
+
+ for (i = 0; i < h1->bInCollection; i++)
+ snd_usb_create_stream(chip, ctrlif, h1->baInterfaceNr[i]);
+
+ break;
+ }
+
+ case UAC_VERSION_2: {
+ struct uac_clock_source_descriptor *cs;
+ struct usb_interface_assoc_descriptor *assoc =
+ usb_ifnum_to_if(dev, ctrlif)->intf_assoc;
+
+ if (!assoc) {
+ snd_printk(KERN_ERR "Audio class v2 interfaces need an interface association\n");
+ return -EINVAL;
+ }
+
+ /* FIXME: for now, we expect there is at least one clock source
+ * descriptor and we always take the first one.
+ * We should properly support devices with multiple clock sources,
+ * clock selectors and sample rate conversion units. */
+
+ cs = snd_usb_find_csint_desc(host_iface->extra, host_iface->extralen,
+ NULL, UAC2_CLOCK_SOURCE);
+
+ if (!cs) {
+ snd_printk(KERN_ERR "CLOCK_SOURCE descriptor not found\n");
+ return -EINVAL;
+ }
+
+ chip->clock_id = cs->bClockID;
+
+ for (i = 0; i < assoc->bInterfaceCount; i++) {
+ int intf = assoc->bFirstInterface + i;
+
+ if (intf != ctrlif)
+ snd_usb_create_stream(chip, ctrlif, intf);
+ }
+
+ break;
+ }
+
+ default:
+ snd_printk(KERN_ERR "unknown protocol version 0x%02x\n", protocol);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/*
+ * free the chip instance
+ *
+ * here we have to do not much, since pcm and controls are already freed
+ *
+ */
+
+static int snd_usb_audio_free(struct snd_usb_audio *chip)
+{
+ kfree(chip);
+ return 0;
+}
+
+static int snd_usb_audio_dev_free(struct snd_device *device)
+{
+ struct snd_usb_audio *chip = device->device_data;
+ return snd_usb_audio_free(chip);
+}
+
+
+/*
+ * create a chip instance and set its names.
+ */
+static int snd_usb_audio_create(struct usb_device *dev, int idx,
+ const struct snd_usb_audio_quirk *quirk,
+ struct snd_usb_audio **rchip)
+{
+ struct snd_card *card;
+ struct snd_usb_audio *chip;
+ int err, len;
+ char component[14];
+ static struct snd_device_ops ops = {
+ .dev_free = snd_usb_audio_dev_free,
+ };
+
+ *rchip = NULL;
+
+ if (snd_usb_get_speed(dev) != USB_SPEED_LOW &&
+ snd_usb_get_speed(dev) != USB_SPEED_FULL &&
+ snd_usb_get_speed(dev) != USB_SPEED_HIGH) {
+ snd_printk(KERN_ERR "unknown device speed %d\n", snd_usb_get_speed(dev));
+ return -ENXIO;
+ }
+
+ err = snd_card_create(index[idx], id[idx], THIS_MODULE, 0, &card);
+ if (err < 0) {
+ snd_printk(KERN_ERR "cannot create card instance %d\n", idx);
+ return err;
+ }
+
+ chip = kzalloc(sizeof(*chip), GFP_KERNEL);
+ if (! chip) {
+ snd_card_free(card);
+ return -ENOMEM;
+ }
+
+ chip->index = idx;
+ chip->dev = dev;
+ chip->card = card;
+ chip->setup = device_setup[idx];
+ chip->nrpacks = nrpacks;
+ chip->async_unlink = async_unlink;
+
+ chip->usb_id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
+ le16_to_cpu(dev->descriptor.idProduct));
+ INIT_LIST_HEAD(&chip->pcm_list);
+ INIT_LIST_HEAD(&chip->midi_list);
+ INIT_LIST_HEAD(&chip->mixer_list);
+
+ if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
+ snd_usb_audio_free(chip);
+ snd_card_free(card);
+ return err;
+ }
+
+ strcpy(card->driver, "USB-Audio");
+ sprintf(component, "USB%04x:%04x",
+ USB_ID_VENDOR(chip->usb_id), USB_ID_PRODUCT(chip->usb_id));
+ snd_component_add(card, component);
+
+ /* retrieve the device string as shortname */
+ if (quirk && quirk->product_name) {
+ strlcpy(card->shortname, quirk->product_name, sizeof(card->shortname));
+ } else {
+ if (!dev->descriptor.iProduct ||
+ usb_string(dev, dev->descriptor.iProduct,
+ card->shortname, sizeof(card->shortname)) <= 0) {
+ /* no name available from anywhere, so use ID */
+ sprintf(card->shortname, "USB Device %#04x:%#04x",
+ USB_ID_VENDOR(chip->usb_id),
+ USB_ID_PRODUCT(chip->usb_id));
+ }
+ }
+
+ /* retrieve the vendor and device strings as longname */
+ if (quirk && quirk->vendor_name) {
+ len = strlcpy(card->longname, quirk->vendor_name, sizeof(card->longname));
+ } else {
+ if (dev->descriptor.iManufacturer)
+ len = usb_string(dev, dev->descriptor.iManufacturer,
+ card->longname, sizeof(card->longname));
+ else
+ len = 0;
+ /* we don't really care if there isn't any vendor string */
+ }
+ if (len > 0)
+ strlcat(card->longname, " ", sizeof(card->longname));
+
+ strlcat(card->longname, card->shortname, sizeof(card->longname));
+
+ len = strlcat(card->longname, " at ", sizeof(card->longname));
+
+ if (len < sizeof(card->longname))
+ usb_make_path(dev, card->longname + len, sizeof(card->longname) - len);
+
+ strlcat(card->longname,
+ snd_usb_get_speed(dev) == USB_SPEED_LOW ? ", low speed" :
+ snd_usb_get_speed(dev) == USB_SPEED_FULL ? ", full speed" :
+ ", high speed",
+ sizeof(card->longname));
+
+ snd_usb_audio_create_proc(chip);
+
+ *rchip = chip;
+ return 0;
+}
+
+/*
+ * probe the active usb device
+ *
+ * note that this can be called multiple times per a device, when it
+ * includes multiple audio control interfaces.
+ *
+ * thus we check the usb device pointer and creates the card instance
+ * only at the first time. the successive calls of this function will
+ * append the pcm interface to the corresponding card.
+ */
+static void *snd_usb_audio_probe(struct usb_device *dev,
+ struct usb_interface *intf,
+ const struct usb_device_id *usb_id)
+{
+ const struct snd_usb_audio_quirk *quirk = (const struct snd_usb_audio_quirk *)usb_id->driver_info;
+ int i, err;
+ struct snd_usb_audio *chip;
+ struct usb_host_interface *alts;
+ int ifnum;
+ u32 id;
+
+ alts = &intf->altsetting[0];
+ ifnum = get_iface_desc(alts)->bInterfaceNumber;
+ id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
+ le16_to_cpu(dev->descriptor.idProduct));
+ if (quirk && quirk->ifnum >= 0 && ifnum != quirk->ifnum)
+ goto __err_val;
+
+ if (snd_usb_apply_boot_quirk(dev, intf, quirk) < 0)
+ goto __err_val;
+
+ /*
+ * found a config. now register to ALSA
+ */
+
+ /* check whether it's already registered */
+ chip = NULL;
+ mutex_lock(®ister_mutex);
+ for (i = 0; i < SNDRV_CARDS; i++) {
+ if (usb_chip[i] && usb_chip[i]->dev == dev) {
+ if (usb_chip[i]->shutdown) {
+ snd_printk(KERN_ERR "USB device is in the shutdown state, cannot create a card instance\n");
+ goto __error;
+ }
+ chip = usb_chip[i];
+ break;
+ }
+ }
+ if (! chip) {
+ /* it's a fresh one.
+ * now look for an empty slot and create a new card instance
+ */
+ for (i = 0; i < SNDRV_CARDS; i++)
+ if (enable[i] && ! usb_chip[i] &&
+ (vid[i] == -1 || vid[i] == USB_ID_VENDOR(id)) &&
+ (pid[i] == -1 || pid[i] == USB_ID_PRODUCT(id))) {
+ if (snd_usb_audio_create(dev, i, quirk, &chip) < 0) {
+ goto __error;
+ }
+ snd_card_set_dev(chip->card, &intf->dev);
+ break;
+ }
+ if (!chip) {
+ printk(KERN_ERR "no available usb audio device\n");
+ goto __error;
+ }
+ }
+
+ chip->txfr_quirk = 0;
+ err = 1; /* continue */
+ if (quirk && quirk->ifnum != QUIRK_NO_INTERFACE) {
+ /* need some special handlings */
+ if ((err = snd_usb_create_quirk(chip, intf, &usb_audio_driver, quirk)) < 0)
+ goto __error;
+ }
+
+ if (err > 0) {
+ /* create normal USB audio interfaces */
+ if (snd_usb_create_streams(chip, ifnum) < 0 ||
+ snd_usb_create_mixer(chip, ifnum, ignore_ctl_error) < 0) {
+ goto __error;
+ }
+ }
+
+ /* we are allowed to call snd_card_register() many times */
+ if (snd_card_register(chip->card) < 0) {
+ goto __error;
+ }
+
+ usb_chip[chip->index] = chip;
+ chip->num_interfaces++;
+ mutex_unlock(®ister_mutex);
+ return chip;
+
+ __error:
+ if (chip && !chip->num_interfaces)
+ snd_card_free(chip->card);
+ mutex_unlock(®ister_mutex);
+ __err_val:
+ return NULL;
+}
+
+/*
+ * we need to take care of counter, since disconnection can be called also
+ * many times as well as usb_audio_probe().
+ */
+static void snd_usb_audio_disconnect(struct usb_device *dev, void *ptr)
+{
+ struct snd_usb_audio *chip;
+ struct snd_card *card;
+ struct list_head *p;
+
+ if (ptr == (void *)-1L)
+ return;
+
+ chip = ptr;
+ card = chip->card;
+ mutex_lock(®ister_mutex);
+ chip->shutdown = 1;
+ chip->num_interfaces--;
+ if (chip->num_interfaces <= 0) {
+ snd_card_disconnect(card);
+ /* release the pcm resources */
+ list_for_each(p, &chip->pcm_list) {
+ snd_usb_stream_disconnect(p);
+ }
+ /* release the midi resources */
+ list_for_each(p, &chip->midi_list) {
+ snd_usbmidi_disconnect(p);
+ }
+ /* release mixer resources */
+ list_for_each(p, &chip->mixer_list) {
+ snd_usb_mixer_disconnect(p);
+ }
+ usb_chip[chip->index] = NULL;
+ mutex_unlock(®ister_mutex);
+ snd_card_free_when_closed(card);
+ } else {
+ mutex_unlock(®ister_mutex);
+ }
+}
+
+/*
+ * new 2.5 USB kernel API
+ */
+static int usb_audio_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ void *chip;
+ chip = snd_usb_audio_probe(interface_to_usbdev(intf), intf, id);
+ if (chip) {
+ usb_set_intfdata(intf, chip);
+ return 0;
+ } else
+ return -EIO;
+}
+
+static void usb_audio_disconnect(struct usb_interface *intf)
+{
+ snd_usb_audio_disconnect(interface_to_usbdev(intf),
+ usb_get_intfdata(intf));
+}
+
+#ifdef CONFIG_PM
+static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message)
+{
+ struct snd_usb_audio *chip = usb_get_intfdata(intf);
+ struct list_head *p;
+ struct snd_usb_stream *as;
+
+ if (chip == (void *)-1L)
+ return 0;
+
+ snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
+ if (!chip->num_suspended_intf++) {
+ list_for_each(p, &chip->pcm_list) {
+ as = list_entry(p, struct snd_usb_stream, list);
+ snd_pcm_suspend_all(as->pcm);
+ }
+ }
+
+ return 0;
+}
+
+static int usb_audio_resume(struct usb_interface *intf)
+{
+ struct snd_usb_audio *chip = usb_get_intfdata(intf);
+
+ if (chip == (void *)-1L)
+ return 0;
+ if (--chip->num_suspended_intf)
+ return 0;
+ /*
+ * ALSA leaves material resumption to user space
+ * we just notify
+ */
+
+ snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
+
+ return 0;
+}
+#endif /* CONFIG_PM */
+
+static struct usb_device_id usb_audio_ids [] = {
+#include "quirks-table.h"
+ { .match_flags = (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS),
+ .bInterfaceClass = USB_CLASS_AUDIO,
+ .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL },
+ { } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE (usb, usb_audio_ids);
+
+/*
+ * entry point for linux usb interface
+ */
+
+static struct usb_driver usb_audio_driver = {
+ .name = "snd-usb-audio",
+ .probe = usb_audio_probe,
+ .disconnect = usb_audio_disconnect,
+ .suspend = usb_audio_suspend,
+ .resume = usb_audio_resume,
+ .id_table = usb_audio_ids,
+};
+
+static int __init snd_usb_audio_init(void)
+{
+ if (nrpacks < 1 || nrpacks > MAX_PACKS) {
+ printk(KERN_WARNING "invalid nrpacks value.\n");
+ return -EINVAL;
+ }
+ return usb_register(&usb_audio_driver);
+}
+
+static void __exit snd_usb_audio_cleanup(void)
+{
+ usb_deregister(&usb_audio_driver);
+}
+
+module_init(snd_usb_audio_init);
+module_exit(snd_usb_audio_cleanup);
--- /dev/null
+#ifndef __USBAUDIO_CARD_H
+#define __USBAUDIO_CARD_H
+
+#define MAX_PACKS 20
+#define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */
+#define MAX_URBS 8
+#define SYNC_URBS 4 /* always four urbs for sync */
+#define MAX_QUEUE 24 /* try not to exceed this queue length, in ms */
+
+struct audioformat {
+ struct list_head list;
+ u64 formats; /* ALSA format bits */
+ unsigned int channels; /* # channels */
+ unsigned int fmt_type; /* USB audio format type (1-3) */
+ unsigned int frame_size; /* samples per frame for non-audio */
+ int iface; /* interface number */
+ unsigned char altsetting; /* corresponding alternate setting */
+ unsigned char altset_idx; /* array index of altenate setting */
+ unsigned char attributes; /* corresponding attributes of cs endpoint */
+ unsigned char endpoint; /* endpoint */
+ unsigned char ep_attr; /* endpoint attributes */
+ unsigned char datainterval; /* log_2 of data packet interval */
+ unsigned int maxpacksize; /* max. packet size */
+ unsigned int rates; /* rate bitmasks */
+ unsigned int rate_min, rate_max; /* min/max rates */
+ unsigned int nr_rates; /* number of rate table entries */
+ unsigned int *rate_table; /* rate table */
+};
+
+struct snd_usb_substream;
+
+struct snd_urb_ctx {
+ struct urb *urb;
+ unsigned int buffer_size; /* size of data buffer, if data URB */
+ struct snd_usb_substream *subs;
+ int index; /* index for urb array */
+ int packets; /* number of packets per urb */
+};
+
+struct snd_urb_ops {
+ int (*prepare)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u);
+ int (*retire)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u);
+ int (*prepare_sync)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u);
+ int (*retire_sync)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u);
+};
+
+struct snd_usb_substream {
+ struct snd_usb_stream *stream;
+ struct usb_device *dev;
+ struct snd_pcm_substream *pcm_substream;
+ int direction; /* playback or capture */
+ int interface; /* current interface */
+ int endpoint; /* assigned endpoint */
+ struct audioformat *cur_audiofmt; /* current audioformat pointer (for hw_params callback) */
+ unsigned int cur_rate; /* current rate (for hw_params callback) */
+ unsigned int period_bytes; /* current period bytes (for hw_params callback) */
+ unsigned int altset_idx; /* USB data format: index of alternate setting */
+ unsigned int datapipe; /* the data i/o pipe */
+ unsigned int syncpipe; /* 1 - async out or adaptive in */
+ unsigned int datainterval; /* log_2 of data packet interval */
+ unsigned int syncinterval; /* P for adaptive mode, 0 otherwise */
+ unsigned int freqn; /* nominal sampling rate in fs/fps in Q16.16 format */
+ unsigned int freqm; /* momentary sampling rate in fs/fps in Q16.16 format */
+ unsigned int freqmax; /* maximum sampling rate, used for buffer management */
+ unsigned int phase; /* phase accumulator */
+ unsigned int maxpacksize; /* max packet size in bytes */
+ unsigned int maxframesize; /* max packet size in frames */
+ unsigned int curpacksize; /* current packet size in bytes (for capture) */
+ unsigned int curframesize; /* current packet size in frames (for capture) */
+ unsigned int fill_max: 1; /* fill max packet size always */
+ unsigned int txfr_quirk:1; /* allow sub-frame alignment */
+ unsigned int fmt_type; /* USB audio format type (1-3) */
+
+ unsigned int running: 1; /* running status */
+
+ unsigned int hwptr_done; /* processed byte position in the buffer */
+ unsigned int transfer_done; /* processed frames since last period update */
+ unsigned long active_mask; /* bitmask of active urbs */
+ unsigned long unlink_mask; /* bitmask of unlinked urbs */
+
+ unsigned int nurbs; /* # urbs */
+ struct snd_urb_ctx dataurb[MAX_URBS]; /* data urb table */
+ struct snd_urb_ctx syncurb[SYNC_URBS]; /* sync urb table */
+ char *syncbuf; /* sync buffer for all sync URBs */
+ dma_addr_t sync_dma; /* DMA address of syncbuf */
+
+ u64 formats; /* format bitmasks (all or'ed) */
+ unsigned int num_formats; /* number of supported audio formats (list) */
+ struct list_head fmt_list; /* format list */
+ struct snd_pcm_hw_constraint_list rate_list; /* limited rates */
+ spinlock_t lock;
+
+ struct snd_urb_ops ops; /* callbacks (must be filled at init) */
+};
+
+struct snd_usb_stream {
+ struct snd_usb_audio *chip;
+ struct snd_pcm *pcm;
+ int pcm_index;
+ unsigned int fmt_type; /* USB audio format type (1-3) */
+ struct snd_usb_substream substream[2];
+ struct list_head list;
+};
+
+#endif /* __USBAUDIO_CARD_H */
--- /dev/null
+#ifndef __USBAUDIO_DEBUG_H
+#define __USBAUDIO_DEBUG_H
+
+/*
+ * h/w constraints
+ */
+
+#ifdef HW_CONST_DEBUG
+#define hwc_debug(fmt, args...) printk(KERN_DEBUG fmt, ##args)
+#else
+#define hwc_debug(fmt, args...) /**/
+#endif
+
+#endif /* __USBAUDIO_DEBUG_H */
+
--- /dev/null
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/usb.h>
+#include <linux/usb/audio.h>
+#include <linux/usb/audio-v2.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+
+#include "usbaudio.h"
+#include "card.h"
+#include "proc.h"
+#include "quirks.h"
+#include "endpoint.h"
+#include "urb.h"
+#include "pcm.h"
+#include "helper.h"
+#include "format.h"
+
+/*
+ * free a substream
+ */
+static void free_substream(struct snd_usb_substream *subs)
+{
+ struct list_head *p, *n;
+
+ if (!subs->num_formats)
+ return; /* not initialized */
+ list_for_each_safe(p, n, &subs->fmt_list) {
+ struct audioformat *fp = list_entry(p, struct audioformat, list);
+ kfree(fp->rate_table);
+ kfree(fp);
+ }
+ kfree(subs->rate_list.list);
+}
+
+
+/*
+ * free a usb stream instance
+ */
+static void snd_usb_audio_stream_free(struct snd_usb_stream *stream)
+{
+ free_substream(&stream->substream[0]);
+ free_substream(&stream->substream[1]);
+ list_del(&stream->list);
+ kfree(stream);
+}
+
+static void snd_usb_audio_pcm_free(struct snd_pcm *pcm)
+{
+ struct snd_usb_stream *stream = pcm->private_data;
+ if (stream) {
+ stream->pcm = NULL;
+ snd_usb_audio_stream_free(stream);
+ }
+}
+
+
+/*
+ * add this endpoint to the chip instance.
+ * if a stream with the same endpoint already exists, append to it.
+ * if not, create a new pcm stream.
+ */
+int snd_usb_add_audio_endpoint(struct snd_usb_audio *chip, int stream, struct audioformat *fp)
+{
+ struct list_head *p;
+ struct snd_usb_stream *as;
+ struct snd_usb_substream *subs;
+ struct snd_pcm *pcm;
+ int err;
+
+ list_for_each(p, &chip->pcm_list) {
+ as = list_entry(p, struct snd_usb_stream, list);
+ if (as->fmt_type != fp->fmt_type)
+ continue;
+ subs = &as->substream[stream];
+ if (!subs->endpoint)
+ continue;
+ if (subs->endpoint == fp->endpoint) {
+ list_add_tail(&fp->list, &subs->fmt_list);
+ subs->num_formats++;
+ subs->formats |= fp->formats;
+ return 0;
+ }
+ }
+ /* look for an empty stream */
+ list_for_each(p, &chip->pcm_list) {
+ as = list_entry(p, struct snd_usb_stream, list);
+ if (as->fmt_type != fp->fmt_type)
+ continue;
+ subs = &as->substream[stream];
+ if (subs->endpoint)
+ continue;
+ err = snd_pcm_new_stream(as->pcm, stream, 1);
+ if (err < 0)
+ return err;
+ snd_usb_init_substream(as, stream, fp);
+ return 0;
+ }
+
+ /* create a new pcm */
+ as = kzalloc(sizeof(*as), GFP_KERNEL);
+ if (!as)
+ return -ENOMEM;
+ as->pcm_index = chip->pcm_devs;
+ as->chip = chip;
+ as->fmt_type = fp->fmt_type;
+ err = snd_pcm_new(chip->card, "USB Audio", chip->pcm_devs,
+ stream == SNDRV_PCM_STREAM_PLAYBACK ? 1 : 0,
+ stream == SNDRV_PCM_STREAM_PLAYBACK ? 0 : 1,
+ &pcm);
+ if (err < 0) {
+ kfree(as);
+ return err;
+ }
+ as->pcm = pcm;
+ pcm->private_data = as;
+ pcm->private_free = snd_usb_audio_pcm_free;
+ pcm->info_flags = 0;
+ if (chip->pcm_devs > 0)
+ sprintf(pcm->name, "USB Audio #%d", chip->pcm_devs);
+ else
+ strcpy(pcm->name, "USB Audio");
+
+ snd_usb_init_substream(as, stream, fp);
+
+ list_add(&as->list, &chip->pcm_list);
+ chip->pcm_devs++;
+
+ snd_usb_proc_pcm_format_add(as);
+
+ return 0;
+}
+
+int snd_usb_parse_audio_endpoints(struct snd_usb_audio *chip, int iface_no)
+{
+ struct usb_device *dev;
+ struct usb_interface *iface;
+ struct usb_host_interface *alts;
+ struct usb_interface_descriptor *altsd;
+ int i, altno, err, stream;
+ int format = 0, num_channels = 0;
+ struct audioformat *fp = NULL;
+ unsigned char *fmt, *csep;
+ int num, protocol;
+
+ dev = chip->dev;
+
+ /* parse the interface's altsettings */
+ iface = usb_ifnum_to_if(dev, iface_no);
+
+ num = iface->num_altsetting;
+
+ /*
+ * Dallas DS4201 workaround: It presents 5 altsettings, but the last
+ * one misses syncpipe, and does not produce any sound.
+ */
+ if (chip->usb_id == USB_ID(0x04fa, 0x4201))
+ num = 4;
+
+ for (i = 0; i < num; i++) {
+ alts = &iface->altsetting[i];
+ altsd = get_iface_desc(alts);
+ protocol = altsd->bInterfaceProtocol;
+ /* skip invalid one */
+ if ((altsd->bInterfaceClass != USB_CLASS_AUDIO &&
+ altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||
+ (altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING &&
+ altsd->bInterfaceSubClass != USB_SUBCLASS_VENDOR_SPEC) ||
+ altsd->bNumEndpoints < 1 ||
+ le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) == 0)
+ continue;
+ /* must be isochronous */
+ if ((get_endpoint(alts, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
+ USB_ENDPOINT_XFER_ISOC)
+ continue;
+ /* check direction */
+ stream = (get_endpoint(alts, 0)->bEndpointAddress & USB_DIR_IN) ?
+ SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
+ altno = altsd->bAlternateSetting;
+
+ if (snd_usb_apply_interface_quirk(chip, iface_no, altno))
+ continue;
+
+ /* get audio formats */
+ switch (protocol) {
+ case UAC_VERSION_1: {
+ struct uac_as_header_descriptor_v1 *as =
+ snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_AS_GENERAL);
+
+ if (!as) {
+ snd_printk(KERN_ERR "%d:%u:%d : UAC_AS_GENERAL descriptor not found\n",
+ dev->devnum, iface_no, altno);
+ continue;
+ }
+
+ if (as->bLength < sizeof(*as)) {
+ snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_AS_GENERAL desc\n",
+ dev->devnum, iface_no, altno);
+ continue;
+ }
+
+ format = le16_to_cpu(as->wFormatTag); /* remember the format value */
+ break;
+ }
+
+ case UAC_VERSION_2: {
+ struct uac_as_header_descriptor_v2 *as =
+ snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_AS_GENERAL);
+
+ if (!as) {
+ snd_printk(KERN_ERR "%d:%u:%d : UAC_AS_GENERAL descriptor not found\n",
+ dev->devnum, iface_no, altno);
+ continue;
+ }
+
+ if (as->bLength < sizeof(*as)) {
+ snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_AS_GENERAL desc\n",
+ dev->devnum, iface_no, altno);
+ continue;
+ }
+
+ num_channels = as->bNrChannels;
+ format = le32_to_cpu(as->bmFormats);
+
+ break;
+ }
+
+ default:
+ snd_printk(KERN_ERR "%d:%u:%d : unknown interface protocol %04x\n",
+ dev->devnum, iface_no, altno, protocol);
+ continue;
+ }
+
+ /* get format type */
+ fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_FORMAT_TYPE);
+ if (!fmt) {
+ snd_printk(KERN_ERR "%d:%u:%d : no UAC_FORMAT_TYPE desc\n",
+ dev->devnum, iface_no, altno);
+ continue;
+ }
+ if (((protocol == UAC_VERSION_1) && (fmt[0] < 8)) ||
+ ((protocol == UAC_VERSION_2) && (fmt[0] != 6))) {
+ snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_FORMAT_TYPE desc\n",
+ dev->devnum, iface_no, altno);
+ continue;
+ }
+
+ /*
+ * Blue Microphones workaround: The last altsetting is identical
+ * with the previous one, except for a larger packet size, but
+ * is actually a mislabeled two-channel setting; ignore it.
+ */
+ if (fmt[4] == 1 && fmt[5] == 2 && altno == 2 && num == 3 &&
+ fp && fp->altsetting == 1 && fp->channels == 1 &&
+ fp->formats == SNDRV_PCM_FMTBIT_S16_LE &&
+ protocol == UAC_VERSION_1 &&
+ le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) ==
+ fp->maxpacksize * 2)
+ continue;
+
+ csep = snd_usb_find_desc(alts->endpoint[0].extra, alts->endpoint[0].extralen, NULL, USB_DT_CS_ENDPOINT);
+ /* Creamware Noah has this descriptor after the 2nd endpoint */
+ if (!csep && altsd->bNumEndpoints >= 2)
+ csep = snd_usb_find_desc(alts->endpoint[1].extra, alts->endpoint[1].extralen, NULL, USB_DT_CS_ENDPOINT);
+ if (!csep || csep[0] < 7 || csep[2] != UAC_EP_GENERAL) {
+ snd_printk(KERN_WARNING "%d:%u:%d : no or invalid"
+ " class specific endpoint descriptor\n",
+ dev->devnum, iface_no, altno);
+ csep = NULL;
+ }
+
+ fp = kzalloc(sizeof(*fp), GFP_KERNEL);
+ if (! fp) {
+ snd_printk(KERN_ERR "cannot malloc\n");
+ return -ENOMEM;
+ }
+
+ fp->iface = iface_no;
+ fp->altsetting = altno;
+ fp->altset_idx = i;
+ fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
+ fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
+ fp->datainterval = snd_usb_parse_datainterval(chip, alts);
+ fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
+ /* num_channels is only set for v2 interfaces */
+ fp->channels = num_channels;
+ if (snd_usb_get_speed(dev) == USB_SPEED_HIGH)
+ fp->maxpacksize = (((fp->maxpacksize >> 11) & 3) + 1)
+ * (fp->maxpacksize & 0x7ff);
+ fp->attributes = csep ? csep[3] : 0;
+
+ /* some quirks for attributes here */
+
+ switch (chip->usb_id) {
+ case USB_ID(0x0a92, 0x0053): /* AudioTrak Optoplay */
+ /* Optoplay sets the sample rate attribute although
+ * it seems not supporting it in fact.
+ */
+ fp->attributes &= ~UAC_EP_CS_ATTR_SAMPLE_RATE;
+ break;
+ case USB_ID(0x041e, 0x3020): /* Creative SB Audigy 2 NX */
+ case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
+ /* doesn't set the sample rate attribute, but supports it */
+ fp->attributes |= UAC_EP_CS_ATTR_SAMPLE_RATE;
+ break;
+ case USB_ID(0x047f, 0x0ca1): /* plantronics headset */
+ case USB_ID(0x077d, 0x07af): /* Griffin iMic (note that there is
+ an older model 77d:223) */
+ /*
+ * plantronics headset and Griffin iMic have set adaptive-in
+ * although it's really not...
+ */
+ fp->ep_attr &= ~USB_ENDPOINT_SYNCTYPE;
+ if (stream == SNDRV_PCM_STREAM_PLAYBACK)
+ fp->ep_attr |= USB_ENDPOINT_SYNC_ADAPTIVE;
+ else
+ fp->ep_attr |= USB_ENDPOINT_SYNC_SYNC;
+ break;
+ }
+
+ /* ok, let's parse further... */
+ if (snd_usb_parse_audio_format(chip, fp, format, fmt, stream, alts) < 0) {
+ kfree(fp->rate_table);
+ kfree(fp);
+ continue;
+ }
+
+ snd_printdd(KERN_INFO "%d:%u:%d: add audio endpoint %#x\n", dev->devnum, iface_no, altno, fp->endpoint);
+ err = snd_usb_add_audio_endpoint(chip, stream, fp);
+ if (err < 0) {
+ kfree(fp->rate_table);
+ kfree(fp);
+ return err;
+ }
+ /* try to set the interface... */
+ usb_set_interface(chip->dev, iface_no, altno);
+ snd_usb_init_pitch(chip, iface_no, alts, fp);
+ snd_usb_init_sample_rate(chip, iface_no, alts, fp, fp->rate_max);
+ }
+ return 0;
+}
+
--- /dev/null
+#ifndef __USBAUDIO_ENDPOINT_H
+#define __USBAUDIO_ENDPOINT_H
+
+int snd_usb_parse_audio_endpoints(struct snd_usb_audio *chip,
+ int iface_no);
+
+int snd_usb_add_audio_endpoint(struct snd_usb_audio *chip,
+ int stream,
+ struct audioformat *fp);
+
+#endif /* __USBAUDIO_ENDPOINT_H */
--- /dev/null
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/usb.h>
+#include <linux/usb/audio.h>
+#include <linux/usb/audio-v2.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+
+#include "usbaudio.h"
+#include "card.h"
+#include "quirks.h"
+#include "helper.h"
+#include "debug.h"
+
+/*
+ * parse the audio format type I descriptor
+ * and returns the corresponding pcm format
+ *
+ * @dev: usb device
+ * @fp: audioformat record
+ * @format: the format tag (wFormatTag)
+ * @fmt: the format type descriptor
+ */
+static u64 parse_audio_format_i_type(struct snd_usb_audio *chip,
+ struct audioformat *fp,
+ int format, void *_fmt,
+ int protocol)
+{
+ int sample_width, sample_bytes;
+ u64 pcm_formats;
+
+ switch (protocol) {
+ case UAC_VERSION_1: {
+ struct uac_format_type_i_discrete_descriptor *fmt = _fmt;
+ sample_width = fmt->bBitResolution;
+ sample_bytes = fmt->bSubframeSize;
+ format = 1 << format;
+ break;
+ }
+
+ case UAC_VERSION_2: {
+ struct uac_format_type_i_ext_descriptor *fmt = _fmt;
+ sample_width = fmt->bBitResolution;
+ sample_bytes = fmt->bSubslotSize;
+ format <<= 1;
+ break;
+ }
+
+ default:
+ return -EINVAL;
+ }
+
+ pcm_formats = 0;
+
+ if (format == 0 || format == (1 << UAC_FORMAT_TYPE_I_UNDEFINED)) {
+ /* some devices don't define this correctly... */
+ snd_printdd(KERN_INFO "%d:%u:%d : format type 0 is detected, processed as PCM\n",
+ chip->dev->devnum, fp->iface, fp->altsetting);
+ format = 1 << UAC_FORMAT_TYPE_I_PCM;
+ }
+ if (format & (1 << UAC_FORMAT_TYPE_I_PCM)) {
+ if (sample_width > sample_bytes * 8) {
+ snd_printk(KERN_INFO "%d:%u:%d : sample bitwidth %d in over sample bytes %d\n",
+ chip->dev->devnum, fp->iface, fp->altsetting,
+ sample_width, sample_bytes);
+ }
+ /* check the format byte size */
+ switch (sample_bytes) {
+ case 1:
+ pcm_formats |= SNDRV_PCM_FMTBIT_S8;
+ break;
+ case 2:
+ if (snd_usb_is_big_endian_format(chip, fp))
+ pcm_formats |= SNDRV_PCM_FMTBIT_S16_BE; /* grrr, big endian!! */
+ else
+ pcm_formats |= SNDRV_PCM_FMTBIT_S16_LE;
+ break;
+ case 3:
+ if (snd_usb_is_big_endian_format(chip, fp))
+ pcm_formats |= SNDRV_PCM_FMTBIT_S24_3BE; /* grrr, big endian!! */
+ else
+ pcm_formats |= SNDRV_PCM_FMTBIT_S24_3LE;
+ break;
+ case 4:
+ pcm_formats |= SNDRV_PCM_FMTBIT_S32_LE;
+ break;
+ default:
+ snd_printk(KERN_INFO "%d:%u:%d : unsupported sample bitwidth %d in %d bytes\n",
+ chip->dev->devnum, fp->iface, fp->altsetting,
+ sample_width, sample_bytes);
+ break;
+ }
+ }
+ if (format & (1 << UAC_FORMAT_TYPE_I_PCM8)) {
+ /* Dallas DS4201 workaround: it advertises U8 format, but really
+ supports S8. */
+ if (chip->usb_id == USB_ID(0x04fa, 0x4201))
+ pcm_formats |= SNDRV_PCM_FMTBIT_S8;
+ else
+ pcm_formats |= SNDRV_PCM_FMTBIT_U8;
+ }
+ if (format & (1 << UAC_FORMAT_TYPE_I_IEEE_FLOAT)) {
+ pcm_formats |= SNDRV_PCM_FMTBIT_FLOAT_LE;
+ }
+ if (format & (1 << UAC_FORMAT_TYPE_I_ALAW)) {
+ pcm_formats |= SNDRV_PCM_FMTBIT_A_LAW;
+ }
+ if (format & (1 << UAC_FORMAT_TYPE_I_MULAW)) {
+ pcm_formats |= SNDRV_PCM_FMTBIT_MU_LAW;
+ }
+ if (format & ~0x3f) {
+ snd_printk(KERN_INFO "%d:%u:%d : unsupported format bits %#x\n",
+ chip->dev->devnum, fp->iface, fp->altsetting, format);
+ }
+ return pcm_formats;
+}
+
+
+/*
+ * parse the format descriptor and stores the possible sample rates
+ * on the audioformat table (audio class v1).
+ *
+ * @dev: usb device
+ * @fp: audioformat record
+ * @fmt: the format descriptor
+ * @offset: the start offset of descriptor pointing the rate type
+ * (7 for type I and II, 8 for type II)
+ */
+static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audioformat *fp,
+ unsigned char *fmt, int offset)
+{
+ int nr_rates = fmt[offset];
+
+ if (fmt[0] < offset + 1 + 3 * (nr_rates ? nr_rates : 2)) {
+ snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_FORMAT_TYPE desc\n",
+ chip->dev->devnum, fp->iface, fp->altsetting);
+ return -1;
+ }
+
+ if (nr_rates) {
+ /*
+ * build the rate table and bitmap flags
+ */
+ int r, idx;
+
+ fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL);
+ if (fp->rate_table == NULL) {
+ snd_printk(KERN_ERR "cannot malloc\n");
+ return -1;
+ }
+
+ fp->nr_rates = 0;
+ fp->rate_min = fp->rate_max = 0;
+ for (r = 0, idx = offset + 1; r < nr_rates; r++, idx += 3) {
+ unsigned int rate = combine_triple(&fmt[idx]);
+ if (!rate)
+ continue;
+ /* C-Media CM6501 mislabels its 96 kHz altsetting */
+ if (rate == 48000 && nr_rates == 1 &&
+ (chip->usb_id == USB_ID(0x0d8c, 0x0201) ||
+ chip->usb_id == USB_ID(0x0d8c, 0x0102)) &&
+ fp->altsetting == 5 && fp->maxpacksize == 392)
+ rate = 96000;
+ /* Creative VF0470 Live Cam reports 16 kHz instead of 8kHz */
+ if (rate == 16000 && chip->usb_id == USB_ID(0x041e, 0x4068))
+ rate = 8000;
+
+ fp->rate_table[fp->nr_rates] = rate;
+ if (!fp->rate_min || rate < fp->rate_min)
+ fp->rate_min = rate;
+ if (!fp->rate_max || rate > fp->rate_max)
+ fp->rate_max = rate;
+ fp->rates |= snd_pcm_rate_to_rate_bit(rate);
+ fp->nr_rates++;
+ }
+ if (!fp->nr_rates) {
+ hwc_debug("All rates were zero. Skipping format!\n");
+ return -1;
+ }
+ } else {
+ /* continuous rates */
+ fp->rates = SNDRV_PCM_RATE_CONTINUOUS;
+ fp->rate_min = combine_triple(&fmt[offset + 1]);
+ fp->rate_max = combine_triple(&fmt[offset + 4]);
+ }
+ return 0;
+}
+
+/*
+ * parse the format descriptor and stores the possible sample rates
+ * on the audioformat table (audio class v2).
+ */
+static int parse_audio_format_rates_v2(struct snd_usb_audio *chip,
+ struct audioformat *fp,
+ struct usb_host_interface *iface)
+{
+ struct usb_device *dev = chip->dev;
+ unsigned char tmp[2], *data;
+ int i, nr_rates, data_size, ret = 0;
+
+ /* get the number of sample rates first by only fetching 2 bytes */
+ ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE,
+ USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
+ UAC2_CS_CONTROL_SAM_FREQ << 8, chip->clock_id << 8,
+ tmp, sizeof(tmp), 1000);
+
+ if (ret < 0) {
+ snd_printk(KERN_ERR "unable to retrieve number of sample rates\n");
+ goto err;
+ }
+
+ nr_rates = (tmp[1] << 8) | tmp[0];
+ data_size = 2 + 12 * nr_rates;
+ data = kzalloc(data_size, GFP_KERNEL);
+ if (!data) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ /* now get the full information */
+ ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE,
+ USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
+ UAC2_CS_CONTROL_SAM_FREQ << 8, chip->clock_id << 8,
+ data, data_size, 1000);
+
+ if (ret < 0) {
+ snd_printk(KERN_ERR "unable to retrieve sample rate range\n");
+ ret = -EINVAL;
+ goto err_free;
+ }
+
+ fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL);
+ if (!fp->rate_table) {
+ ret = -ENOMEM;
+ goto err_free;
+ }
+
+ fp->nr_rates = 0;
+ fp->rate_min = fp->rate_max = 0;
+
+ for (i = 0; i < nr_rates; i++) {
+ int rate = combine_quad(&data[2 + 12 * i]);
+
+ fp->rate_table[fp->nr_rates] = rate;
+ if (!fp->rate_min || rate < fp->rate_min)
+ fp->rate_min = rate;
+ if (!fp->rate_max || rate > fp->rate_max)
+ fp->rate_max = rate;
+ fp->rates |= snd_pcm_rate_to_rate_bit(rate);
+ fp->nr_rates++;
+ }
+
+err_free:
+ kfree(data);
+err:
+ return ret;
+}
+
+/*
+ * parse the format type I and III descriptors
+ */
+static int parse_audio_format_i(struct snd_usb_audio *chip,
+ struct audioformat *fp,
+ int format, void *_fmt,
+ struct usb_host_interface *iface)
+{
+ struct usb_interface_descriptor *altsd = get_iface_desc(iface);
+ struct uac_format_type_i_discrete_descriptor *fmt = _fmt;
+ int protocol = altsd->bInterfaceProtocol;
+ int pcm_format, ret;
+
+ if (fmt->bFormatType == UAC_FORMAT_TYPE_III) {
+ /* FIXME: the format type is really IECxxx
+ * but we give normal PCM format to get the existing
+ * apps working...
+ */
+ switch (chip->usb_id) {
+
+ case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
+ if (chip->setup == 0x00 &&
+ fp->altsetting == 6)
+ pcm_format = SNDRV_PCM_FORMAT_S16_BE;
+ else
+ pcm_format = SNDRV_PCM_FORMAT_S16_LE;
+ break;
+ default:
+ pcm_format = SNDRV_PCM_FORMAT_S16_LE;
+ }
+ fp->formats = 1uLL << pcm_format;
+ } else {
+ fp->formats = parse_audio_format_i_type(chip, fp, format,
+ fmt, protocol);
+ if (!fp->formats)
+ return -1;
+ }
+
+ /* gather possible sample rates */
+ /* audio class v1 reports possible sample rates as part of the
+ * proprietary class specific descriptor.
+ * audio class v2 uses class specific EP0 range requests for that.
+ */
+ switch (protocol) {
+ case UAC_VERSION_1:
+ fp->channels = fmt->bNrChannels;
+ ret = parse_audio_format_rates_v1(chip, fp, _fmt, 7);
+ break;
+ case UAC_VERSION_2:
+ /* fp->channels is already set in this case */
+ ret = parse_audio_format_rates_v2(chip, fp, iface);
+ break;
+ }
+
+ if (fp->channels < 1) {
+ snd_printk(KERN_ERR "%d:%u:%d : invalid channels %d\n",
+ chip->dev->devnum, fp->iface, fp->altsetting, fp->channels);
+ return -1;
+ }
+
+ return ret;
+}
+
+/*
+ * parse the format type II descriptor
+ */
+static int parse_audio_format_ii(struct snd_usb_audio *chip,
+ struct audioformat *fp,
+ int format, void *_fmt,
+ struct usb_host_interface *iface)
+{
+ int brate, framesize, ret;
+ struct usb_interface_descriptor *altsd = get_iface_desc(iface);
+ int protocol = altsd->bInterfaceProtocol;
+
+ switch (format) {
+ case UAC_FORMAT_TYPE_II_AC3:
+ /* FIXME: there is no AC3 format defined yet */
+ // fp->formats = SNDRV_PCM_FMTBIT_AC3;
+ fp->formats = SNDRV_PCM_FMTBIT_U8; /* temporary hack to receive byte streams */
+ break;
+ case UAC_FORMAT_TYPE_II_MPEG:
+ fp->formats = SNDRV_PCM_FMTBIT_MPEG;
+ break;
+ default:
+ snd_printd(KERN_INFO "%d:%u:%d : unknown format tag %#x is detected. processed as MPEG.\n",
+ chip->dev->devnum, fp->iface, fp->altsetting, format);
+ fp->formats = SNDRV_PCM_FMTBIT_MPEG;
+ break;
+ }
+
+ fp->channels = 1;
+
+ switch (protocol) {
+ case UAC_VERSION_1: {
+ struct uac_format_type_ii_discrete_descriptor *fmt = _fmt;
+ brate = le16_to_cpu(fmt->wMaxBitRate);
+ framesize = le16_to_cpu(fmt->wSamplesPerFrame);
+ snd_printd(KERN_INFO "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize);
+ fp->frame_size = framesize;
+ ret = parse_audio_format_rates_v1(chip, fp, _fmt, 8); /* fmt[8..] sample rates */
+ break;
+ }
+ case UAC_VERSION_2: {
+ struct uac_format_type_ii_ext_descriptor *fmt = _fmt;
+ brate = le16_to_cpu(fmt->wMaxBitRate);
+ framesize = le16_to_cpu(fmt->wSamplesPerFrame);
+ snd_printd(KERN_INFO "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize);
+ fp->frame_size = framesize;
+ ret = parse_audio_format_rates_v2(chip, fp, iface);
+ break;
+ }
+ }
+
+ return ret;
+}
+
+int snd_usb_parse_audio_format(struct snd_usb_audio *chip, struct audioformat *fp,
+ int format, unsigned char *fmt, int stream,
+ struct usb_host_interface *iface)
+{
+ int err;
+
+ switch (fmt[3]) {
+ case UAC_FORMAT_TYPE_I:
+ case UAC_FORMAT_TYPE_III:
+ err = parse_audio_format_i(chip, fp, format, fmt, iface);
+ break;
+ case UAC_FORMAT_TYPE_II:
+ err = parse_audio_format_ii(chip, fp, format, fmt, iface);
+ break;
+ default:
+ snd_printd(KERN_INFO "%d:%u:%d : format type %d is not supported yet\n",
+ chip->dev->devnum, fp->iface, fp->altsetting, fmt[3]);
+ return -1;
+ }
+ fp->fmt_type = fmt[3];
+ if (err < 0)
+ return err;
+#if 1
+ /* FIXME: temporary hack for extigy/audigy 2 nx/zs */
+ /* extigy apparently supports sample rates other than 48k
+ * but not in ordinary way. so we enable only 48k atm.
+ */
+ if (chip->usb_id == USB_ID(0x041e, 0x3000) ||
+ chip->usb_id == USB_ID(0x041e, 0x3020) ||
+ chip->usb_id == USB_ID(0x041e, 0x3061)) {
+ if (fmt[3] == UAC_FORMAT_TYPE_I &&
+ fp->rates != SNDRV_PCM_RATE_48000 &&
+ fp->rates != SNDRV_PCM_RATE_96000)
+ return -1;
+ }
+#endif
+ return 0;
+}
+
--- /dev/null
+#ifndef __USBAUDIO_FORMAT_H
+#define __USBAUDIO_FORMAT_H
+
+int snd_usb_parse_audio_format(struct snd_usb_audio *chip, struct audioformat *fp,
+ int format, unsigned char *fmt, int stream,
+ struct usb_host_interface *iface);
+
+#endif /* __USBAUDIO_FORMAT_H */
--- /dev/null
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/usb.h>
+
+#include "usbaudio.h"
+#include "helper.h"
+
+/*
+ * combine bytes and get an integer value
+ */
+unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size)
+{
+ switch (size) {
+ case 1: return *bytes;
+ case 2: return combine_word(bytes);
+ case 3: return combine_triple(bytes);
+ case 4: return combine_quad(bytes);
+ default: return 0;
+ }
+}
+
+/*
+ * parse descriptor buffer and return the pointer starting the given
+ * descriptor type.
+ */
+void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype)
+{
+ u8 *p, *end, *next;
+
+ p = descstart;
+ end = p + desclen;
+ for (; p < end;) {
+ if (p[0] < 2)
+ return NULL;
+ next = p + p[0];
+ if (next > end)
+ return NULL;
+ if (p[1] == dtype && (!after || (void *)p > after)) {
+ return p;
+ }
+ p = next;
+ }
+ return NULL;
+}
+
+/*
+ * find a class-specified interface descriptor with the given subtype.
+ */
+void *snd_usb_find_csint_desc(void *buffer, int buflen, void *after, u8 dsubtype)
+{
+ unsigned char *p = after;
+
+ while ((p = snd_usb_find_desc(buffer, buflen, p,
+ USB_DT_CS_INTERFACE)) != NULL) {
+ if (p[0] >= 3 && p[2] == dsubtype)
+ return p;
+ }
+ return NULL;
+}
+
+/*
+ * Wrapper for usb_control_msg().
+ * Allocates a temp buffer to prevent dmaing from/to the stack.
+ */
+int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request,
+ __u8 requesttype, __u16 value, __u16 index, void *data,
+ __u16 size, int timeout)
+{
+ int err;
+ void *buf = NULL;
+
+ if (size > 0) {
+ buf = kmemdup(data, size, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+ }
+ err = usb_control_msg(dev, pipe, request, requesttype,
+ value, index, buf, size, timeout);
+ if (size > 0) {
+ memcpy(data, buf, size);
+ kfree(buf);
+ }
+ return err;
+}
+
+unsigned char snd_usb_parse_datainterval(struct snd_usb_audio *chip,
+ struct usb_host_interface *alts)
+{
+ if (snd_usb_get_speed(chip->dev) == USB_SPEED_HIGH &&
+ get_endpoint(alts, 0)->bInterval >= 1 &&
+ get_endpoint(alts, 0)->bInterval <= 4)
+ return get_endpoint(alts, 0)->bInterval - 1;
+ else
+ return 0;
+}
+
--- /dev/null
+#ifndef __USBAUDIO_HELPER_H
+#define __USBAUDIO_HELPER_H
+
+unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size);
+
+void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype);
+void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype);
+
+int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe,
+ __u8 request, __u8 requesttype, __u16 value, __u16 index,
+ void *data, __u16 size, int timeout);
+
+unsigned char snd_usb_parse_datainterval(struct snd_usb_audio *chip,
+ struct usb_host_interface *alts);
+
+/*
+ * retrieve usb_interface descriptor from the host interface
+ * (conditional for compatibility with the older API)
+ */
+#ifndef get_iface_desc
+#define get_iface_desc(iface) (&(iface)->desc)
+#define get_endpoint(alt,ep) (&(alt)->endpoint[ep].desc)
+#define get_ep_desc(ep) (&(ep)->desc)
+#define get_cfg_desc(cfg) (&(cfg)->desc)
+#endif
+
+#ifndef snd_usb_get_speed
+#define snd_usb_get_speed(dev) ((dev)->speed)
+#endif
+
+
+#endif /* __USBAUDIO_HELPER_H */
#include <sound/rawmidi.h>
#include <sound/asequencer.h>
#include "usbaudio.h"
-
+#include "midi.h"
+#include "helper.h"
/*
* define this to log all USB packets
--- /dev/null
+#ifndef __USBMIDI_H
+#define __USBMIDI_H
+
+/* maximum number of endpoints per interface */
+#define MIDI_MAX_ENDPOINTS 2
+
+/* data for QUIRK_MIDI_FIXED_ENDPOINT */
+struct snd_usb_midi_endpoint_info {
+ int8_t out_ep; /* ep number, 0 autodetect */
+ uint8_t out_interval; /* interval for interrupt endpoints */
+ int8_t in_ep;
+ uint8_t in_interval;
+ uint16_t out_cables; /* bitmask */
+ uint16_t in_cables; /* bitmask */
+};
+
+/* for QUIRK_MIDI_YAMAHA, data is NULL */
+
+/* for QUIRK_MIDI_MIDIMAN, data points to a snd_usb_midi_endpoint_info
+ * structure (out_cables and in_cables only) */
+
+/* for QUIRK_COMPOSITE, data points to an array of snd_usb_audio_quirk
+ * structures, terminated with .ifnum = -1 */
+
+/* for QUIRK_AUDIO_FIXED_ENDPOINT, data points to an audioformat structure */
+
+/* for QUIRK_AUDIO/MIDI_STANDARD_INTERFACE, data is NULL */
+
+/* for QUIRK_AUDIO_EDIROL_UA700_UA25/UA1000, data is NULL */
+
+/* for QUIRK_IGNORE_INTERFACE, data is NULL */
+
+/* for QUIRK_MIDI_NOVATION and _RAW, data is NULL */
+
+/* for QUIRK_MIDI_EMAGIC, data points to a snd_usb_midi_endpoint_info
+ * structure (out_cables and in_cables only) */
+
+/* for QUIRK_MIDI_CME, data is NULL */
+
+int snd_usbmidi_create(struct snd_card *card,
+ struct usb_interface *iface,
+ struct list_head *midi_list,
+ const struct snd_usb_audio_quirk *quirk);
+void snd_usbmidi_input_stop(struct list_head* p);
+void snd_usbmidi_input_start(struct list_head* p);
+void snd_usbmidi_disconnect(struct list_head *p);
+
+#endif /* __USBMIDI_H */
--- /dev/null
+snd-ua101-objs := ua101.o
+obj-$(CONFIG_SND_USB_UA101) += snd-ua101.o
#include <sound/initval.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
-#include "usbaudio.h"
+#include "../usbaudio.h"
+#include "../midi.h"
MODULE_DESCRIPTION("Edirol UA-101/1000 driver");
MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
#include <linux/string.h>
#include <linux/usb.h>
#include <linux/usb/audio.h>
+#include <linux/usb/audio-v2.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/tlv.h>
#include "usbaudio.h"
-
-/*
- */
-
-/* ignore error from controls - for debugging */
-/* #define IGNORE_CTL_ERROR */
-
-/*
- * Sound Blaster remote control configuration
- *
- * format of remote control data:
- * Extigy: xx 00
- * Audigy 2 NX: 06 80 xx 00 00 00
- * Live! 24-bit: 06 80 xx yy 22 83
- */
-static const struct rc_config {
- u32 usb_id;
- u8 offset;
- u8 length;
- u8 packet_length;
- u8 min_packet_length; /* minimum accepted length of the URB result */
- u8 mute_mixer_id;
- u32 mute_code;
-} rc_configs[] = {
- { USB_ID(0x041e, 0x3000), 0, 1, 2, 1, 18, 0x0013 }, /* Extigy */
- { USB_ID(0x041e, 0x3020), 2, 1, 6, 6, 18, 0x0013 }, /* Audigy 2 NX */
- { USB_ID(0x041e, 0x3040), 2, 2, 6, 6, 2, 0x6e91 }, /* Live! 24-bit */
- { USB_ID(0x041e, 0x3048), 2, 2, 6, 6, 2, 0x6e91 }, /* Toshiba SB0500 */
-};
+#include "mixer.h"
+#include "helper.h"
+#include "mixer_quirks.h"
#define MAX_ID_ELEMS 256
-struct usb_mixer_interface {
- struct snd_usb_audio *chip;
- unsigned int ctrlif;
- struct list_head list;
- unsigned int ignore_ctl_error;
- struct urb *urb;
- /* array[MAX_ID_ELEMS], indexed by unit id */
- struct usb_mixer_elem_info **id_elems;
-
- /* Sound Blaster remote control stuff */
- const struct rc_config *rc_cfg;
- u32 rc_code;
- wait_queue_head_t rc_waitq;
- struct urb *rc_urb;
- struct usb_ctrlrequest *rc_setup_packet;
- u8 rc_buffer[6];
-
- u8 audigy2nx_leds[3];
- u8 xonar_u1_status;
-};
-
-
struct usb_audio_term {
int id;
int type;
const struct usbmix_selector_map *selector_map;
};
-#define MAX_CHANNELS 10 /* max logical channels */
-
-struct usb_mixer_elem_info {
- struct usb_mixer_interface *mixer;
- struct usb_mixer_elem_info *next_id_elem; /* list of controls with same id */
- struct snd_ctl_elem_id *elem_id;
- unsigned int id;
- unsigned int control; /* CS or ICN (high byte) */
- unsigned int cmask; /* channel mask bitmap: 0 = master */
- int channels;
- int val_type;
- int min, max, res;
- int dBmin, dBmax;
- int cached;
- int cache_val[MAX_CHANNELS];
- u8 initialized;
-};
-
-
-enum {
- USB_FEATURE_NONE = 0,
- USB_FEATURE_MUTE = 1,
- USB_FEATURE_VOLUME,
- USB_FEATURE_BASS,
- USB_FEATURE_MID,
- USB_FEATURE_TREBLE,
- USB_FEATURE_GEQ,
- USB_FEATURE_AGC,
- USB_FEATURE_DELAY,
- USB_FEATURE_BASSBOOST,
- USB_FEATURE_LOUDNESS
-};
-
enum {
USB_MIXER_BOOLEAN,
USB_MIXER_INV_BOOLEAN,
* if the mixer topology is too complicated and the parsed names are
* ambiguous, add the entries in usbmixer_maps.c.
*/
-#include "usbmixer_maps.c"
+#include "mixer_maps.c"
static const struct usbmix_name_map *
find_map(struct mixer_build *state, int unitid, int control)
/*
* find an audio control unit with the given unit id
+ * this doesn't return any clock related units, so they need to be handled elsewhere
*/
static void *find_audio_control_unit(struct mixer_build *state, unsigned char unit)
{
p = NULL;
while ((p = snd_usb_find_desc(state->buffer, state->buflen, p,
USB_DT_CS_INTERFACE)) != NULL) {
- if (p[0] >= 4 && p[2] >= UAC_INPUT_TERMINAL && p[2] <= UAC_EXTENSION_UNIT_V1 && p[3] == unit)
+ if (p[0] >= 4 && p[2] >= UAC_INPUT_TERMINAL && p[2] <= UAC2_EXTENSION_UNIT_V2 && p[3] == unit)
return p;
}
return NULL;
* retrieve a mixer value
*/
-static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret)
+static int get_ctl_value_v1(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret)
{
unsigned char buf[2];
int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
return -EINVAL;
}
+static int get_ctl_value_v2(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret)
+{
+ unsigned char buf[14]; /* enough space for one range of 4 bytes */
+ unsigned char *val;
+ int ret;
+ __u8 bRequest;
+
+ bRequest = (request == UAC_GET_CUR) ?
+ UAC2_CS_CUR : UAC2_CS_RANGE;
+
+ ret = snd_usb_ctl_msg(cval->mixer->chip->dev,
+ usb_rcvctrlpipe(cval->mixer->chip->dev, 0),
+ bRequest,
+ USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
+ validx, cval->mixer->ctrlif | (cval->id << 8),
+ buf, sizeof(buf), 1000);
+
+ if (ret < 0) {
+ snd_printdd(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n",
+ request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type);
+ return ret;
+ }
+
+ switch (request) {
+ case UAC_GET_CUR:
+ val = buf;
+ break;
+ case UAC_GET_MIN:
+ val = buf + sizeof(__u16);
+ break;
+ case UAC_GET_MAX:
+ val = buf + sizeof(__u16) * 2;
+ break;
+ case UAC_GET_RES:
+ val = buf + sizeof(__u16) * 3;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(val, sizeof(__u16)));
+
+ return 0;
+}
+
+static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret)
+{
+ return (cval->mixer->protocol == UAC_VERSION_1) ?
+ get_ctl_value_v1(cval, request, validx, value_ret) :
+ get_ctl_value_v2(cval, request, validx, value_ret);
+}
+
static int get_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int *value)
{
return get_ctl_value(cval, UAC_GET_CUR, validx, value);
err = get_cur_mix_raw(cval, channel, value);
if (err < 0) {
if (!cval->mixer->ignore_ctl_error)
- snd_printd(KERN_ERR "cannot get current value for "
- "control %d ch %d: err = %d\n",
+ snd_printd(KERN_ERR "cannot get current value for control %d ch %d: err = %d\n",
cval->control, channel, err);
return err;
}
* set a mixer value
*/
-static int set_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int value_set)
+int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
+ int request, int validx, int value_set)
{
unsigned char buf[2];
- int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
- int timeout = 10;
+ int val_len, timeout = 10;
+
+ if (cval->mixer->protocol == UAC_VERSION_1) {
+ val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
+ } else { /* UAC_VERSION_2 */
+ /* audio class v2 controls are always 2 bytes in size */
+ val_len = sizeof(__u16);
+
+ /* FIXME */
+ if (request != UAC_SET_CUR) {
+ snd_printdd(KERN_WARNING "RANGE setting not yet supported\n");
+ return -EINVAL;
+ }
+
+ request = UAC2_CS_CUR;
+ }
value_set = convert_bytes_value(cval, value_set);
buf[0] = value_set & 0xff;
static int set_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int value)
{
- return set_ctl_value(cval, UAC_SET_CUR, validx, value);
+ return snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR, validx, value);
}
static int set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel,
int index, int value)
{
int err;
- err = set_ctl_value(cval, UAC_SET_CUR, (cval->control << 8) | channel,
+ err = snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR, (cval->control << 8) | channel,
value);
if (err < 0)
return err;
*/
static int check_input_term(struct mixer_build *state, int id, struct usb_audio_term *term)
{
- unsigned char *p1;
+ void *p1;
memset(term, 0, sizeof(*term));
while ((p1 = find_audio_control_unit(state, id)) != NULL) {
+ unsigned char *hdr = p1;
term->id = id;
- switch (p1[2]) {
+ switch (hdr[2]) {
case UAC_INPUT_TERMINAL:
- term->type = combine_word(p1 + 4);
- term->channels = p1[7];
- term->chconfig = combine_word(p1 + 8);
- term->name = p1[11];
+ if (state->mixer->protocol == UAC_VERSION_1) {
+ struct uac_input_terminal_descriptor *d = p1;
+ term->type = le16_to_cpu(d->wTerminalType);
+ term->channels = d->bNrChannels;
+ term->chconfig = le16_to_cpu(d->wChannelConfig);
+ term->name = d->iTerminal;
+ } else { /* UAC_VERSION_2 */
+ struct uac2_input_terminal_descriptor *d = p1;
+ term->type = le16_to_cpu(d->wTerminalType);
+ term->channels = d->bNrChannels;
+ term->chconfig = le32_to_cpu(d->bmChannelConfig);
+ term->name = d->iTerminal;
+ }
return 0;
- case UAC_FEATURE_UNIT:
- id = p1[4];
+ case UAC_FEATURE_UNIT: {
+ /* the header is the same for v1 and v2 */
+ struct uac_feature_unit_descriptor *d = p1;
+ id = d->bUnitID;
break; /* continue to parse */
- case UAC_MIXER_UNIT:
- term->type = p1[2] << 16; /* virtual type */
- term->channels = p1[5 + p1[4]];
- term->chconfig = combine_word(p1 + 6 + p1[4]);
- term->name = p1[p1[0] - 1];
+ }
+ case UAC_MIXER_UNIT: {
+ struct uac_mixer_unit_descriptor *d = p1;
+ term->type = d->bDescriptorSubtype << 16; /* virtual type */
+ term->channels = uac_mixer_unit_bNrChannels(d);
+ term->chconfig = uac_mixer_unit_wChannelConfig(d, state->mixer->protocol);
+ term->name = uac_mixer_unit_iMixer(d);
return 0;
- case UAC_SELECTOR_UNIT:
+ }
+ case UAC_SELECTOR_UNIT: {
+ struct uac_selector_unit_descriptor *d = p1;
/* call recursively to retrieve the channel info */
- if (check_input_term(state, p1[5], term) < 0)
+ if (check_input_term(state, d->baSourceID[0], term) < 0)
return -ENODEV;
- term->type = p1[2] << 16; /* virtual type */
+ term->type = d->bDescriptorSubtype << 16; /* virtual type */
term->id = id;
- term->name = p1[9 + p1[0] - 1];
+ term->name = uac_selector_unit_iSelector(d);
return 0;
+ }
case UAC_PROCESSING_UNIT_V1:
- case UAC_EXTENSION_UNIT_V1:
- if (p1[6] == 1) {
- id = p1[7];
+ case UAC_EXTENSION_UNIT_V1: {
+ struct uac_processing_unit_descriptor *d = p1;
+ if (d->bNrInPins) {
+ id = d->baSourceID[0];
break; /* continue to parse */
}
- term->type = p1[2] << 16; /* virtual type */
- term->channels = p1[7 + p1[6]];
- term->chconfig = combine_word(p1 + 8 + p1[6]);
- term->name = p1[12 + p1[6] + p1[11 + p1[6]]];
+ term->type = d->bDescriptorSubtype << 16; /* virtual type */
+ term->channels = uac_processing_unit_bNrChannels(d);
+ term->chconfig = uac_processing_unit_wChannelConfig(d, state->mixer->protocol);
+ term->name = uac_processing_unit_iProcessing(d, state->mixer->protocol);
return 0;
+ }
default:
return -ENODEV;
}
int last_valid_res = cval->res;
while (cval->res > 1) {
- if (set_ctl_value(cval, UAC_SET_RES, (cval->control << 8) | minchn, cval->res / 2) < 0)
+ if (snd_usb_mixer_set_ctl_value(cval, UAC_SET_RES,
+ (cval->control << 8) | minchn, cval->res / 2) < 0)
break;
cval->res /= 2;
}
.put = mixer_ctl_feature_put,
};
+/* the read-only variant */
+static struct snd_kcontrol_new usb_feature_unit_ctl_ro = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "", /* will be filled later manually */
+ .info = mixer_ctl_feature_info,
+ .get = mixer_ctl_feature_get,
+ .put = NULL,
+};
+
/*
* build a feature control
return strlcat(kctl->id.name, str, sizeof(kctl->id.name));
}
-static void build_feature_ctl(struct mixer_build *state, unsigned char *desc,
+static void build_feature_ctl(struct mixer_build *state, void *raw_desc,
unsigned int ctl_mask, int control,
- struct usb_audio_term *iterm, int unitid)
+ struct usb_audio_term *iterm, int unitid,
+ int read_only)
{
+ struct uac_feature_unit_descriptor *desc = raw_desc;
unsigned int len = 0;
int mapped_name = 0;
- int nameid = desc[desc[0] - 1];
+ int nameid = uac_feature_unit_iFeature(desc);
struct snd_kcontrol *kctl;
struct usb_mixer_elem_info *cval;
const struct usbmix_name_map *map;
control++; /* change from zero-based to 1-based value */
- if (control == USB_FEATURE_GEQ) {
+ if (control == UAC_GRAPHIC_EQUALIZER_CONTROL) {
/* FIXME: not supported yet */
return;
}
/* get min/max values */
get_min_max(cval, 0);
- kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
+ if (read_only)
+ kctl = snd_ctl_new1(&usb_feature_unit_ctl_ro, cval);
+ else
+ kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
+
if (! kctl) {
snd_printk(KERN_ERR "cannot malloc kcontrol\n");
kfree(cval);
kctl->id.name, sizeof(kctl->id.name));
switch (control) {
- case USB_FEATURE_MUTE:
- case USB_FEATURE_VOLUME:
+ case UAC_MUTE_CONTROL:
+ case UAC_VOLUME_CONTROL:
/* determine the control name. the rule is:
* - if a name id is given in descriptor, use it.
* - if the connected input can be determined, then use the name
len = append_ctl_name(kctl, " Playback");
}
}
- append_ctl_name(kctl, control == USB_FEATURE_MUTE ?
+ append_ctl_name(kctl, control == UAC_MUTE_CONTROL ?
" Switch" : " Volume");
- if (control == USB_FEATURE_VOLUME) {
+ if (control == UAC_VOLUME_CONTROL) {
kctl->tlv.c = mixer_vol_tlv;
kctl->vd[0].access |=
SNDRV_CTL_ELEM_ACCESS_TLV_READ |
struct usb_audio_term iterm;
unsigned int master_bits, first_ch_bits;
int err, csize;
- struct uac_feature_unit_descriptor *ftr = _ftr;
+ struct uac_feature_unit_descriptor *hdr = _ftr;
+ __u8 *bmaControls;
+
+ if (state->mixer->protocol == UAC_VERSION_1) {
+ csize = hdr->bControlSize;
+ channels = (hdr->bLength - 7) / csize - 1;
+ bmaControls = hdr->bmaControls;
+ } else {
+ struct uac2_feature_unit_descriptor *ftr = _ftr;
+ csize = 4;
+ channels = (hdr->bLength - 6) / 4;
+ bmaControls = ftr->bmaControls;
+ }
- if (ftr->bLength < 7 || ! (csize = ftr->bControlSize) || ftr->bLength < 7 + csize) {
+ if (hdr->bLength < 7 || !csize || hdr->bLength < 7 + csize) {
snd_printk(KERN_ERR "usbaudio: unit %u: invalid UAC_FEATURE_UNIT descriptor\n", unitid);
return -EINVAL;
}
/* parse the source unit */
- if ((err = parse_audio_unit(state, ftr->bSourceID)) < 0)
+ if ((err = parse_audio_unit(state, hdr->bSourceID)) < 0)
return err;
/* determine the input source type and name */
- if (check_input_term(state, ftr->bSourceID, &iterm) < 0)
+ if (check_input_term(state, hdr->bSourceID, &iterm) < 0)
return -EINVAL;
- channels = (ftr->bLength - 7) / csize - 1;
-
- master_bits = snd_usb_combine_bytes(ftr->controls, csize);
+ master_bits = snd_usb_combine_bytes(bmaControls, csize);
/* master configuration quirks */
switch (state->chip->usb_id) {
case USB_ID(0x08bb, 0x2702):
snd_printk(KERN_INFO
"usbmixer: master volume quirk for PCM2702 chip\n");
/* disable non-functional volume control */
- master_bits &= ~(1 << (USB_FEATURE_VOLUME - 1));
+ master_bits &= ~UAC_FU_VOLUME;
break;
}
if (channels > 0)
- first_ch_bits = snd_usb_combine_bytes(ftr->controls + csize, csize);
+ first_ch_bits = snd_usb_combine_bytes(bmaControls + csize, csize);
else
first_ch_bits = 0;
- /* check all control types */
- for (i = 0; i < 10; i++) {
- unsigned int ch_bits = 0;
- for (j = 0; j < channels; j++) {
- unsigned int mask = snd_usb_combine_bytes(ftr->controls + csize * (j+1), csize);
- if (mask & (1 << i))
- ch_bits |= (1 << j);
+
+ if (state->mixer->protocol == UAC_VERSION_1) {
+ /* check all control types */
+ for (i = 0; i < 10; i++) {
+ unsigned int ch_bits = 0;
+ for (j = 0; j < channels; j++) {
+ unsigned int mask = snd_usb_combine_bytes(bmaControls + csize * (j+1), csize);
+ if (mask & (1 << i))
+ ch_bits |= (1 << j);
+ }
+ /* audio class v1 controls are never read-only */
+ if (ch_bits & 1) /* the first channel must be set (for ease of programming) */
+ build_feature_ctl(state, _ftr, ch_bits, i, &iterm, unitid, 0);
+ if (master_bits & (1 << i))
+ build_feature_ctl(state, _ftr, 0, i, &iterm, unitid, 0);
+ }
+ } else { /* UAC_VERSION_2 */
+ for (i = 0; i < 30/2; i++) {
+ /* From the USB Audio spec v2.0:
+ bmaControls() is a (ch+1)-element array of 4-byte bitmaps,
+ each containing a set of bit pairs. If a Control is present,
+ it must be Host readable. If a certain Control is not
+ present then the bit pair must be set to 0b00.
+ If a Control is present but read-only, the bit pair must be
+ set to 0b01. If a Control is also Host programmable, the bit
+ pair must be set to 0b11. The value 0b10 is not allowed. */
+ unsigned int ch_bits = 0;
+ unsigned int ch_read_only = 0;
+
+ for (j = 0; j < channels; j++) {
+ unsigned int mask = snd_usb_combine_bytes(bmaControls + csize * (j+1), csize);
+ if (mask & (1 << (i * 2))) {
+ ch_bits |= (1 << j);
+ if (~mask & (1 << ((i * 2) + 1)))
+ ch_read_only |= (1 << j);
+ }
+ }
+
+ /* FIXME: the whole unit is read-only if any of the channels is marked read-only */
+ if (ch_bits & 1) /* the first channel must be set (for ease of programming) */
+ build_feature_ctl(state, _ftr, ch_bits, i, &iterm, unitid, !!ch_read_only);
+ if (master_bits & (1 << i * 2))
+ build_feature_ctl(state, _ftr, 0, i, &iterm, unitid,
+ ~master_bits & (1 << ((i * 2) + 1)));
}
- if (ch_bits & 1) /* the first channel must be set (for ease of programming) */
- build_feature_ctl(state, _ftr, ch_bits, i, &iterm, unitid);
- if (master_bits & (1 << i))
- build_feature_ctl(state, _ftr, 0, i, &iterm, unitid);
}
return 0;
* input channel number (zero based) is given in control field instead.
*/
-static void build_mixer_unit_ctl(struct mixer_build *state, unsigned char *desc,
+static void build_mixer_unit_ctl(struct mixer_build *state,
+ struct uac_mixer_unit_descriptor *desc,
int in_pin, int in_ch, int unitid,
struct usb_audio_term *iterm)
{
struct usb_mixer_elem_info *cval;
- unsigned int input_pins = desc[4];
- unsigned int num_outs = desc[5 + input_pins];
+ unsigned int num_outs = uac_mixer_unit_bNrChannels(desc);
unsigned int i, len;
struct snd_kcontrol *kctl;
const struct usbmix_name_map *map;
cval->control = in_ch + 1; /* based on 1 */
cval->val_type = USB_MIXER_S16;
for (i = 0; i < num_outs; i++) {
- if (check_matrix_bitmap(desc + 9 + input_pins, in_ch, i, num_outs)) {
+ if (check_matrix_bitmap(uac_mixer_unit_bmControls(desc, state->mixer->protocol), in_ch, i, num_outs)) {
cval->cmask |= (1 << i);
cval->channels++;
}
/*
* parse a mixer unit
*/
-static int parse_audio_mixer_unit(struct mixer_build *state, int unitid, unsigned char *desc)
+static int parse_audio_mixer_unit(struct mixer_build *state, int unitid, void *raw_desc)
{
+ struct uac_mixer_unit_descriptor *desc = raw_desc;
struct usb_audio_term iterm;
int input_pins, num_ins, num_outs;
int pin, ich, err;
- if (desc[0] < 11 || ! (input_pins = desc[4]) || ! (num_outs = desc[5 + input_pins])) {
+ if (desc->bLength < 11 || ! (input_pins = desc->bNrInPins) || ! (num_outs = uac_mixer_unit_bNrChannels(desc))) {
snd_printk(KERN_ERR "invalid MIXER UNIT descriptor %d\n", unitid);
return -EINVAL;
}
/* no bmControls field (e.g. Maya44) -> ignore */
- if (desc[0] <= 10 + input_pins) {
+ if (desc->bLength <= 10 + input_pins) {
snd_printdd(KERN_INFO "MU %d has no bmControls field\n", unitid);
return 0;
}
num_ins = 0;
ich = 0;
for (pin = 0; pin < input_pins; pin++) {
- err = parse_audio_unit(state, desc[5 + pin]);
+ err = parse_audio_unit(state, desc->baSourceID[pin]);
if (err < 0)
return err;
- err = check_input_term(state, desc[5 + pin], &iterm);
+ err = check_input_term(state, desc->baSourceID[pin], &iterm);
if (err < 0)
return err;
num_ins += iterm.channels;
int och, ich_has_controls = 0;
for (och = 0; och < num_outs; ++och) {
- if (check_matrix_bitmap(desc + 9 + input_pins,
+ if (check_matrix_bitmap(uac_mixer_unit_bmControls(desc, state->mixer->protocol),
ich, och, num_outs)) {
ich_has_controls = 1;
break;
/*
* build a processing/extension unit
*/
-static int build_audio_procunit(struct mixer_build *state, int unitid, unsigned char *dsc, struct procunit_info *list, char *name)
+static int build_audio_procunit(struct mixer_build *state, int unitid, void *raw_desc, struct procunit_info *list, char *name)
{
- int num_ins = dsc[6];
+ struct uac_processing_unit_descriptor *desc = raw_desc;
+ int num_ins = desc->bNrInPins;
struct usb_mixer_elem_info *cval;
struct snd_kcontrol *kctl;
int i, err, nameid, type, len;
0, NULL, default_value_info
};
- if (dsc[0] < 13 || dsc[0] < 13 + num_ins || dsc[0] < num_ins + dsc[11 + num_ins]) {
+ if (desc->bLength < 13 || desc->bLength < 13 + num_ins ||
+ desc->bLength < num_ins + uac_processing_unit_bControlSize(desc, state->mixer->protocol)) {
snd_printk(KERN_ERR "invalid %s descriptor (id %d)\n", name, unitid);
return -EINVAL;
}
for (i = 0; i < num_ins; i++) {
- if ((err = parse_audio_unit(state, dsc[7 + i])) < 0)
+ if ((err = parse_audio_unit(state, desc->baSourceID[i])) < 0)
return err;
}
- type = combine_word(&dsc[4]);
+ type = le16_to_cpu(desc->wProcessType);
for (info = list; info && info->type; info++)
if (info->type == type)
break;
info = &default_info;
for (valinfo = info->values; valinfo->control; valinfo++) {
- /* FIXME: bitmap might be longer than 8bit */
- if (! (dsc[12 + num_ins] & (1 << (valinfo->control - 1))))
+ __u8 *controls = uac_processing_unit_bmControls(desc, state->mixer->protocol);
+
+ if (! (controls[valinfo->control / 8] & (1 << ((valinfo->control % 8) - 1))))
continue;
map = find_map(state, unitid, valinfo->control);
if (check_ignored_ctl(map))
/* get min/max values */
if (type == USB_PROC_UPDOWN && cval->control == USB_PROC_UPDOWN_MODE_SEL) {
+ __u8 *control_spec = uac_processing_unit_specific(desc, state->mixer->protocol);
/* FIXME: hard-coded */
cval->min = 1;
- cval->max = dsc[15];
+ cval->max = control_spec[0];
cval->res = 1;
cval->initialized = 1;
} else {
else if (info->name)
strlcpy(kctl->id.name, info->name, sizeof(kctl->id.name));
else {
- nameid = dsc[12 + num_ins + dsc[11 + num_ins]];
+ nameid = uac_processing_unit_iProcessing(desc, state->mixer->protocol);
len = 0;
if (nameid)
len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
}
-static int parse_audio_processing_unit(struct mixer_build *state, int unitid, unsigned char *desc)
+static int parse_audio_processing_unit(struct mixer_build *state, int unitid, void *raw_desc)
{
- return build_audio_procunit(state, unitid, desc, procunits, "Processing Unit");
+ return build_audio_procunit(state, unitid, raw_desc, procunits, "Processing Unit");
}
-static int parse_audio_extension_unit(struct mixer_build *state, int unitid, unsigned char *desc)
+static int parse_audio_extension_unit(struct mixer_build *state, int unitid, void *raw_desc)
{
- return build_audio_procunit(state, unitid, desc, extunits, "Extension Unit");
+ /* Note that we parse extension units with processing unit descriptors.
+ * That's ok as the layout is the same */
+ return build_audio_procunit(state, unitid, raw_desc, extunits, "Extension Unit");
}
/*
* parse a selector unit
*/
-static int parse_audio_selector_unit(struct mixer_build *state, int unitid, unsigned char *desc)
+static int parse_audio_selector_unit(struct mixer_build *state, int unitid, void *raw_desc)
{
- unsigned int num_ins = desc[4];
+ struct uac_selector_unit_descriptor *desc = raw_desc;
unsigned int i, nameid, len;
int err;
struct usb_mixer_elem_info *cval;
const struct usbmix_name_map *map;
char **namelist;
- if (! num_ins || desc[0] < 5 + num_ins) {
+ if (!desc->bNrInPins || desc->bLength < 5 + desc->bNrInPins) {
snd_printk(KERN_ERR "invalid SELECTOR UNIT descriptor %d\n", unitid);
return -EINVAL;
}
- for (i = 0; i < num_ins; i++) {
- if ((err = parse_audio_unit(state, desc[5 + i])) < 0)
+ for (i = 0; i < desc->bNrInPins; i++) {
+ if ((err = parse_audio_unit(state, desc->baSourceID[i])) < 0)
return err;
}
- if (num_ins == 1) /* only one ? nonsense! */
+ if (desc->bNrInPins == 1) /* only one ? nonsense! */
return 0;
map = find_map(state, unitid, 0);
cval->val_type = USB_MIXER_U8;
cval->channels = 1;
cval->min = 1;
- cval->max = num_ins;
+ cval->max = desc->bNrInPins;
cval->res = 1;
cval->initialized = 1;
- namelist = kmalloc(sizeof(char *) * num_ins, GFP_KERNEL);
+ namelist = kmalloc(sizeof(char *) * desc->bNrInPins, GFP_KERNEL);
if (! namelist) {
snd_printk(KERN_ERR "cannot malloc\n");
kfree(cval);
return -ENOMEM;
}
#define MAX_ITEM_NAME_LEN 64
- for (i = 0; i < num_ins; i++) {
+ for (i = 0; i < desc->bNrInPins; i++) {
struct usb_audio_term iterm;
len = 0;
namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL);
}
len = check_mapped_selector_name(state, unitid, i, namelist[i],
MAX_ITEM_NAME_LEN);
- if (! len && check_input_term(state, desc[5 + i], &iterm) >= 0)
+ if (! len && check_input_term(state, desc->baSourceID[i], &iterm) >= 0)
len = get_term_name(state, &iterm, namelist[i], MAX_ITEM_NAME_LEN, 0);
if (! len)
sprintf(namelist[i], "Input %d", i);
kctl->private_value = (unsigned long)namelist;
kctl->private_free = usb_mixer_selector_elem_free;
- nameid = desc[desc[0] - 1];
+ nameid = uac_selector_unit_iSelector(desc);
len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name));
if (len)
;
}
snd_printdd(KERN_INFO "[%d] SU [%s] items = %d\n",
- cval->id, kctl->id.name, num_ins);
+ cval->id, kctl->id.name, desc->bNrInPins);
if ((err = add_control_to_empty(state, kctl)) < 0)
return err;
case UAC_FEATURE_UNIT:
return parse_audio_feature_unit(state, unitid, p1);
case UAC_PROCESSING_UNIT_V1:
- return parse_audio_processing_unit(state, unitid, p1);
+ /* UAC2_EFFECT_UNIT has the same value */
+ if (state->mixer->protocol == UAC_VERSION_1)
+ return parse_audio_processing_unit(state, unitid, p1);
+ else
+ return 0; /* FIXME - effect units not implemented yet */
case UAC_EXTENSION_UNIT_V1:
- return parse_audio_extension_unit(state, unitid, p1);
+ /* UAC2_PROCESSING_UNIT_V2 has the same value */
+ if (state->mixer->protocol == UAC_VERSION_1)
+ return parse_audio_extension_unit(state, unitid, p1);
+ else /* UAC_VERSION_2 */
+ return parse_audio_processing_unit(state, unitid, p1);
default:
snd_printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]);
return -EINVAL;
*/
static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
{
- struct uac_output_terminal_descriptor_v1 *desc;
struct mixer_build state;
int err;
const struct usbmix_ctl_map *map;
struct usb_host_interface *hostif;
+ void *p;
hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0];
memset(&state, 0, sizeof(state));
}
}
- desc = NULL;
- while ((desc = snd_usb_find_csint_desc(hostif->extra, hostif->extralen, desc, UAC_OUTPUT_TERMINAL)) != NULL) {
- if (desc->bLength < 9)
- continue; /* invalid descriptor? */
- set_bit(desc->bTerminalID, state.unitbitmap); /* mark terminal ID as visited */
- state.oterm.id = desc->bTerminalID;
- state.oterm.type = le16_to_cpu(desc->wTerminalType);
- state.oterm.name = desc->iTerminal;
- err = parse_audio_unit(&state, desc->bSourceID);
- if (err < 0)
- return err;
+ p = NULL;
+ while ((p = snd_usb_find_csint_desc(hostif->extra, hostif->extralen, p, UAC_OUTPUT_TERMINAL)) != NULL) {
+ if (mixer->protocol == UAC_VERSION_1) {
+ struct uac_output_terminal_descriptor_v1 *desc = p;
+
+ if (desc->bLength < sizeof(*desc))
+ continue; /* invalid descriptor? */
+ set_bit(desc->bTerminalID, state.unitbitmap); /* mark terminal ID as visited */
+ state.oterm.id = desc->bTerminalID;
+ state.oterm.type = le16_to_cpu(desc->wTerminalType);
+ state.oterm.name = desc->iTerminal;
+ err = parse_audio_unit(&state, desc->bSourceID);
+ if (err < 0)
+ return err;
+ } else { /* UAC_VERSION_2 */
+ struct uac2_output_terminal_descriptor *desc = p;
+
+ if (desc->bLength < sizeof(*desc))
+ continue; /* invalid descriptor? */
+ set_bit(desc->bTerminalID, state.unitbitmap); /* mark terminal ID as visited */
+ state.oterm.id = desc->bTerminalID;
+ state.oterm.type = le16_to_cpu(desc->wTerminalType);
+ state.oterm.name = desc->iTerminal;
+ err = parse_audio_unit(&state, desc->bSourceID);
+ if (err < 0)
+ return err;
+ }
}
+
return 0;
}
-static void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer,
- int unitid)
+void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid)
{
struct usb_mixer_elem_info *info;
}
}
-static void snd_usb_mixer_memory_change(struct usb_mixer_interface *mixer,
- int unitid)
-{
- if (!mixer->rc_cfg)
- return;
- /* unit ids specific to Extigy/Audigy 2 NX: */
- switch (unitid) {
- case 0: /* remote control */
- mixer->rc_urb->dev = mixer->chip->dev;
- usb_submit_urb(mixer->rc_urb, GFP_ATOMIC);
- break;
- case 4: /* digital in jack */
- case 7: /* line in jacks */
- case 19: /* speaker out jacks */
- case 20: /* headphones out jack */
- break;
- /* live24ext: 4 = line-in jack */
- case 3: /* hp-out jack (may actuate Mute) */
- if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
- mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
- snd_usb_mixer_notify_id(mixer, mixer->rc_cfg->mute_mixer_id);
- break;
- default:
- snd_printd(KERN_DEBUG "memory change in unknown unit %d\n", unitid);
- break;
- }
-}
-
static void snd_usb_mixer_status_complete(struct urb *urb)
{
struct usb_mixer_interface *mixer = urb->context;
if (!(buf[0] & 0x40))
snd_usb_mixer_notify_id(mixer, buf[1]);
else
- snd_usb_mixer_memory_change(mixer, buf[1]);
+ snd_usb_mixer_rc_memory_change(mixer, buf[1]);
}
}
if (urb->status != -ENOENT && urb->status != -ECONNRESET) {
return 0;
}
-static void snd_usb_soundblaster_remote_complete(struct urb *urb)
-{
- struct usb_mixer_interface *mixer = urb->context;
- const struct rc_config *rc = mixer->rc_cfg;
- u32 code;
-
- if (urb->status < 0 || urb->actual_length < rc->min_packet_length)
- return;
-
- code = mixer->rc_buffer[rc->offset];
- if (rc->length == 2)
- code |= mixer->rc_buffer[rc->offset + 1] << 8;
-
- /* the Mute button actually changes the mixer control */
- if (code == rc->mute_code)
- snd_usb_mixer_notify_id(mixer, rc->mute_mixer_id);
- mixer->rc_code = code;
- wmb();
- wake_up(&mixer->rc_waitq);
-}
-
-static long snd_usb_sbrc_hwdep_read(struct snd_hwdep *hw, char __user *buf,
- long count, loff_t *offset)
-{
- struct usb_mixer_interface *mixer = hw->private_data;
- int err;
- u32 rc_code;
-
- if (count != 1 && count != 4)
- return -EINVAL;
- err = wait_event_interruptible(mixer->rc_waitq,
- (rc_code = xchg(&mixer->rc_code, 0)) != 0);
- if (err == 0) {
- if (count == 1)
- err = put_user(rc_code, buf);
- else
- err = put_user(rc_code, (u32 __user *)buf);
- }
- return err < 0 ? err : count;
-}
-
-static unsigned int snd_usb_sbrc_hwdep_poll(struct snd_hwdep *hw, struct file *file,
- poll_table *wait)
-{
- struct usb_mixer_interface *mixer = hw->private_data;
-
- poll_wait(file, &mixer->rc_waitq, wait);
- return mixer->rc_code ? POLLIN | POLLRDNORM : 0;
-}
-
-static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
-{
- struct snd_hwdep *hwdep;
- int err, len, i;
-
- for (i = 0; i < ARRAY_SIZE(rc_configs); ++i)
- if (rc_configs[i].usb_id == mixer->chip->usb_id)
- break;
- if (i >= ARRAY_SIZE(rc_configs))
- return 0;
- mixer->rc_cfg = &rc_configs[i];
-
- len = mixer->rc_cfg->packet_length;
-
- init_waitqueue_head(&mixer->rc_waitq);
- err = snd_hwdep_new(mixer->chip->card, "SB remote control", 0, &hwdep);
- if (err < 0)
- return err;
- snprintf(hwdep->name, sizeof(hwdep->name),
- "%s remote control", mixer->chip->card->shortname);
- hwdep->iface = SNDRV_HWDEP_IFACE_SB_RC;
- hwdep->private_data = mixer;
- hwdep->ops.read = snd_usb_sbrc_hwdep_read;
- hwdep->ops.poll = snd_usb_sbrc_hwdep_poll;
- hwdep->exclusive = 1;
-
- mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL);
- if (!mixer->rc_urb)
- return -ENOMEM;
- mixer->rc_setup_packet = kmalloc(sizeof(*mixer->rc_setup_packet), GFP_KERNEL);
- if (!mixer->rc_setup_packet) {
- usb_free_urb(mixer->rc_urb);
- mixer->rc_urb = NULL;
- return -ENOMEM;
- }
- mixer->rc_setup_packet->bRequestType =
- USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
- mixer->rc_setup_packet->bRequest = UAC_GET_MEM;
- mixer->rc_setup_packet->wValue = cpu_to_le16(0);
- mixer->rc_setup_packet->wIndex = cpu_to_le16(0);
- mixer->rc_setup_packet->wLength = cpu_to_le16(len);
- usb_fill_control_urb(mixer->rc_urb, mixer->chip->dev,
- usb_rcvctrlpipe(mixer->chip->dev, 0),
- (u8*)mixer->rc_setup_packet, mixer->rc_buffer, len,
- snd_usb_soundblaster_remote_complete, mixer);
- return 0;
-}
-
-#define snd_audigy2nx_led_info snd_ctl_boolean_mono_info
-
-static int snd_audigy2nx_led_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
-{
- struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
- int index = kcontrol->private_value;
-
- ucontrol->value.integer.value[0] = mixer->audigy2nx_leds[index];
- return 0;
-}
-
-static int snd_audigy2nx_led_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
-{
- struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
- int index = kcontrol->private_value;
- int value = ucontrol->value.integer.value[0];
- int err, changed;
-
- if (value > 1)
- return -EINVAL;
- changed = value != mixer->audigy2nx_leds[index];
- err = snd_usb_ctl_msg(mixer->chip->dev,
- usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
- value, index + 2, NULL, 0, 100);
- if (err < 0)
- return err;
- mixer->audigy2nx_leds[index] = value;
- return changed;
-}
-
-static struct snd_kcontrol_new snd_audigy2nx_controls[] = {
- {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "CMSS LED Switch",
- .info = snd_audigy2nx_led_info,
- .get = snd_audigy2nx_led_get,
- .put = snd_audigy2nx_led_put,
- .private_value = 0,
- },
- {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "Power LED Switch",
- .info = snd_audigy2nx_led_info,
- .get = snd_audigy2nx_led_get,
- .put = snd_audigy2nx_led_put,
- .private_value = 1,
- },
- {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "Dolby Digital LED Switch",
- .info = snd_audigy2nx_led_info,
- .get = snd_audigy2nx_led_get,
- .put = snd_audigy2nx_led_put,
- .private_value = 2,
- },
-};
-
-static int snd_audigy2nx_controls_create(struct usb_mixer_interface *mixer)
-{
- int i, err;
-
- for (i = 0; i < ARRAY_SIZE(snd_audigy2nx_controls); ++i) {
- if (i > 1 && /* Live24ext has 2 LEDs only */
- (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
- mixer->chip->usb_id == USB_ID(0x041e, 0x3048)))
- break;
- err = snd_ctl_add(mixer->chip->card,
- snd_ctl_new1(&snd_audigy2nx_controls[i], mixer));
- if (err < 0)
- return err;
- }
- mixer->audigy2nx_leds[1] = 1; /* Power LED is on by default */
- return 0;
-}
-
-static void snd_audigy2nx_proc_read(struct snd_info_entry *entry,
- struct snd_info_buffer *buffer)
-{
- static const struct sb_jack {
- int unitid;
- const char *name;
- } jacks_audigy2nx[] = {
- {4, "dig in "},
- {7, "line in"},
- {19, "spk out"},
- {20, "hph out"},
- {-1, NULL}
- }, jacks_live24ext[] = {
- {4, "line in"}, /* &1=Line, &2=Mic*/
- {3, "hph out"}, /* headphones */
- {0, "RC "}, /* last command, 6 bytes see rc_config above */
- {-1, NULL}
- };
- const struct sb_jack *jacks;
- struct usb_mixer_interface *mixer = entry->private_data;
- int i, err;
- u8 buf[3];
-
- snd_iprintf(buffer, "%s jacks\n\n", mixer->chip->card->shortname);
- if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020))
- jacks = jacks_audigy2nx;
- else if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
- mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
- jacks = jacks_live24ext;
- else
- return;
-
- for (i = 0; jacks[i].name; ++i) {
- snd_iprintf(buffer, "%s: ", jacks[i].name);
- err = snd_usb_ctl_msg(mixer->chip->dev,
- usb_rcvctrlpipe(mixer->chip->dev, 0),
- UAC_GET_MEM, USB_DIR_IN | USB_TYPE_CLASS |
- USB_RECIP_INTERFACE, 0,
- jacks[i].unitid << 8, buf, 3, 100);
- if (err == 3 && (buf[0] == 3 || buf[0] == 6))
- snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]);
- else
- snd_iprintf(buffer, "?\n");
- }
-}
-
-static int snd_xonar_u1_switch_get(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
-
- ucontrol->value.integer.value[0] = !!(mixer->xonar_u1_status & 0x02);
- return 0;
-}
-
-static int snd_xonar_u1_switch_put(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
- u8 old_status, new_status;
- int err, changed;
-
- old_status = mixer->xonar_u1_status;
- if (ucontrol->value.integer.value[0])
- new_status = old_status | 0x02;
- else
- new_status = old_status & ~0x02;
- changed = new_status != old_status;
- err = snd_usb_ctl_msg(mixer->chip->dev,
- usb_sndctrlpipe(mixer->chip->dev, 0), 0x08,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
- 50, 0, &new_status, 1, 100);
- if (err < 0)
- return err;
- mixer->xonar_u1_status = new_status;
- return changed;
-}
-
-static struct snd_kcontrol_new snd_xonar_u1_output_switch = {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "Digital Playback Switch",
- .info = snd_ctl_boolean_mono_info,
- .get = snd_xonar_u1_switch_get,
- .put = snd_xonar_u1_switch_put,
-};
-
-static int snd_xonar_u1_controls_create(struct usb_mixer_interface *mixer)
-{
- int err;
-
- err = snd_ctl_add(mixer->chip->card,
- snd_ctl_new1(&snd_xonar_u1_output_switch, mixer));
- if (err < 0)
- return err;
- mixer->xonar_u1_status = 0x05;
- return 0;
-}
-
-void snd_emuusb_set_samplerate(struct snd_usb_audio *chip,
- unsigned char samplerate_id)
-{
- struct usb_mixer_interface *mixer;
- struct usb_mixer_elem_info *cval;
- int unitid = 12; /* SamleRate ExtensionUnit ID */
-
- list_for_each_entry(mixer, &chip->mixer_list, list) {
- cval = mixer->id_elems[unitid];
- if (cval) {
- set_cur_ctl_value(cval, cval->control << 8,
- samplerate_id);
- snd_usb_mixer_notify_id(mixer, unitid);
- }
- break;
- }
-}
-
int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
int ignore_error)
{
struct usb_mixer_interface *mixer;
struct snd_info_entry *entry;
struct usb_host_interface *host_iface;
- int err, protocol;
+ int err;
strcpy(chip->card->mixername, "USB Mixer");
}
host_iface = &usb_ifnum_to_if(chip->dev, ctrlif)->altsetting[0];
- protocol = host_iface->desc.bInterfaceProtocol;
-
- /* FIXME! */
- if (protocol != UAC_VERSION_1) {
- snd_printk(KERN_WARNING "mixer interface protocol 0x%02x not yet supported\n",
- protocol);
- return 0;
- }
+ mixer->protocol = host_iface->desc.bInterfaceProtocol;
if ((err = snd_usb_mixer_controls(mixer)) < 0 ||
(err = snd_usb_mixer_status_create(mixer)) < 0)
goto _error;
- if ((err = snd_usb_soundblaster_remote_init(mixer)) < 0)
- goto _error;
-
- if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020) ||
- mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
- mixer->chip->usb_id == USB_ID(0x041e, 0x3048)) {
- if ((err = snd_audigy2nx_controls_create(mixer)) < 0)
- goto _error;
- if (!snd_card_proc_new(chip->card, "audigy2nx", &entry))
- snd_info_set_text_ops(entry, mixer,
- snd_audigy2nx_proc_read);
- }
-
- if (mixer->chip->usb_id == USB_ID(0x0b05, 0x1739) ||
- mixer->chip->usb_id == USB_ID(0x0b05, 0x1743)) {
- err = snd_xonar_u1_controls_create(mixer);
- if (err < 0)
- goto _error;
- }
+ snd_usb_mixer_apply_create_quirk(mixer);
err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops);
if (err < 0)
void snd_usb_mixer_disconnect(struct list_head *p)
{
struct usb_mixer_interface *mixer;
-
+
mixer = list_entry(p, struct usb_mixer_interface, list);
usb_kill_urb(mixer->urb);
usb_kill_urb(mixer->rc_urb);
--- /dev/null
+#ifndef __USBMIXER_H
+#define __USBMIXER_H
+
+struct usb_mixer_interface {
+ struct snd_usb_audio *chip;
+ unsigned int ctrlif;
+ struct list_head list;
+ unsigned int ignore_ctl_error;
+ struct urb *urb;
+ /* array[MAX_ID_ELEMS], indexed by unit id */
+ struct usb_mixer_elem_info **id_elems;
+
+ /* the usb audio specification version this interface complies to */
+ int protocol;
+
+ /* Sound Blaster remote control stuff */
+ const struct rc_config *rc_cfg;
+ u32 rc_code;
+ wait_queue_head_t rc_waitq;
+ struct urb *rc_urb;
+ struct usb_ctrlrequest *rc_setup_packet;
+ u8 rc_buffer[6];
+
+ u8 audigy2nx_leds[3];
+ u8 xonar_u1_status;
+};
+
+#define MAX_CHANNELS 10 /* max logical channels */
+
+struct usb_mixer_elem_info {
+ struct usb_mixer_interface *mixer;
+ struct usb_mixer_elem_info *next_id_elem; /* list of controls with same id */
+ struct snd_ctl_elem_id *elem_id;
+ unsigned int id;
+ unsigned int control; /* CS or ICN (high byte) */
+ unsigned int cmask; /* channel mask bitmap: 0 = master */
+ int channels;
+ int val_type;
+ int min, max, res;
+ int dBmin, dBmax;
+ int cached;
+ int cache_val[MAX_CHANNELS];
+ u8 initialized;
+};
+
+int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
+ int ignore_error);
+void snd_usb_mixer_disconnect(struct list_head *p);
+
+void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid);
+
+int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
+ int request, int validx, int value_set);
+
+#endif /* __USBMIXER_H */
/* 16: MU (w/o controls) */
{ 17, NULL, 1 }, /* DISABLED: PU-switch (any effect?) */
{ 17, "Channel Routing", 2 }, /* PU: mode select */
- { 18, "Tone Control - Bass", USB_FEATURE_BASS }, /* FU */
- { 18, "Tone Control - Treble", USB_FEATURE_TREBLE }, /* FU */
+ { 18, "Tone Control - Bass", UAC_BASS_CONTROL }, /* FU */
+ { 18, "Tone Control - Treble", UAC_TREBLE_CONTROL }, /* FU */
{ 18, "Master Playback" }, /* FU; others */
/* 19: OT speaker */
/* 20: OT headphone */
--- /dev/null
+/*
+ * USB Audio Driver for ALSA
+ *
+ * Quirks and vendor-specific extensions for mixer interfaces
+ *
+ * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
+ *
+ * Many codes borrowed from audio.c by
+ * Alan Cox (alan@lxorguk.ukuu.org.uk)
+ * Thomas Sailer (sailer@ife.ee.ethz.ch)
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/init.h>
+#include <linux/usb.h>
+#include <linux/usb/audio.h>
+
+#include <sound/core.h>
+#include <sound/control.h>
+#include <sound/hwdep.h>
+#include <sound/info.h>
+
+#include "usbaudio.h"
+#include "mixer.h"
+#include "mixer_quirks.h"
+#include "helper.h"
+
+/*
+ * Sound Blaster remote control configuration
+ *
+ * format of remote control data:
+ * Extigy: xx 00
+ * Audigy 2 NX: 06 80 xx 00 00 00
+ * Live! 24-bit: 06 80 xx yy 22 83
+ */
+static const struct rc_config {
+ u32 usb_id;
+ u8 offset;
+ u8 length;
+ u8 packet_length;
+ u8 min_packet_length; /* minimum accepted length of the URB result */
+ u8 mute_mixer_id;
+ u32 mute_code;
+} rc_configs[] = {
+ { USB_ID(0x041e, 0x3000), 0, 1, 2, 1, 18, 0x0013 }, /* Extigy */
+ { USB_ID(0x041e, 0x3020), 2, 1, 6, 6, 18, 0x0013 }, /* Audigy 2 NX */
+ { USB_ID(0x041e, 0x3040), 2, 2, 6, 6, 2, 0x6e91 }, /* Live! 24-bit */
+ { USB_ID(0x041e, 0x3048), 2, 2, 6, 6, 2, 0x6e91 }, /* Toshiba SB0500 */
+};
+
+static void snd_usb_soundblaster_remote_complete(struct urb *urb)
+{
+ struct usb_mixer_interface *mixer = urb->context;
+ const struct rc_config *rc = mixer->rc_cfg;
+ u32 code;
+
+ if (urb->status < 0 || urb->actual_length < rc->min_packet_length)
+ return;
+
+ code = mixer->rc_buffer[rc->offset];
+ if (rc->length == 2)
+ code |= mixer->rc_buffer[rc->offset + 1] << 8;
+
+ /* the Mute button actually changes the mixer control */
+ if (code == rc->mute_code)
+ snd_usb_mixer_notify_id(mixer, rc->mute_mixer_id);
+ mixer->rc_code = code;
+ wmb();
+ wake_up(&mixer->rc_waitq);
+}
+
+static long snd_usb_sbrc_hwdep_read(struct snd_hwdep *hw, char __user *buf,
+ long count, loff_t *offset)
+{
+ struct usb_mixer_interface *mixer = hw->private_data;
+ int err;
+ u32 rc_code;
+
+ if (count != 1 && count != 4)
+ return -EINVAL;
+ err = wait_event_interruptible(mixer->rc_waitq,
+ (rc_code = xchg(&mixer->rc_code, 0)) != 0);
+ if (err == 0) {
+ if (count == 1)
+ err = put_user(rc_code, buf);
+ else
+ err = put_user(rc_code, (u32 __user *)buf);
+ }
+ return err < 0 ? err : count;
+}
+
+static unsigned int snd_usb_sbrc_hwdep_poll(struct snd_hwdep *hw, struct file *file,
+ poll_table *wait)
+{
+ struct usb_mixer_interface *mixer = hw->private_data;
+
+ poll_wait(file, &mixer->rc_waitq, wait);
+ return mixer->rc_code ? POLLIN | POLLRDNORM : 0;
+}
+
+static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
+{
+ struct snd_hwdep *hwdep;
+ int err, len, i;
+
+ for (i = 0; i < ARRAY_SIZE(rc_configs); ++i)
+ if (rc_configs[i].usb_id == mixer->chip->usb_id)
+ break;
+ if (i >= ARRAY_SIZE(rc_configs))
+ return 0;
+ mixer->rc_cfg = &rc_configs[i];
+
+ len = mixer->rc_cfg->packet_length;
+
+ init_waitqueue_head(&mixer->rc_waitq);
+ err = snd_hwdep_new(mixer->chip->card, "SB remote control", 0, &hwdep);
+ if (err < 0)
+ return err;
+ snprintf(hwdep->name, sizeof(hwdep->name),
+ "%s remote control", mixer->chip->card->shortname);
+ hwdep->iface = SNDRV_HWDEP_IFACE_SB_RC;
+ hwdep->private_data = mixer;
+ hwdep->ops.read = snd_usb_sbrc_hwdep_read;
+ hwdep->ops.poll = snd_usb_sbrc_hwdep_poll;
+ hwdep->exclusive = 1;
+
+ mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!mixer->rc_urb)
+ return -ENOMEM;
+ mixer->rc_setup_packet = kmalloc(sizeof(*mixer->rc_setup_packet), GFP_KERNEL);
+ if (!mixer->rc_setup_packet) {
+ usb_free_urb(mixer->rc_urb);
+ mixer->rc_urb = NULL;
+ return -ENOMEM;
+ }
+ mixer->rc_setup_packet->bRequestType =
+ USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
+ mixer->rc_setup_packet->bRequest = UAC_GET_MEM;
+ mixer->rc_setup_packet->wValue = cpu_to_le16(0);
+ mixer->rc_setup_packet->wIndex = cpu_to_le16(0);
+ mixer->rc_setup_packet->wLength = cpu_to_le16(len);
+ usb_fill_control_urb(mixer->rc_urb, mixer->chip->dev,
+ usb_rcvctrlpipe(mixer->chip->dev, 0),
+ (u8*)mixer->rc_setup_packet, mixer->rc_buffer, len,
+ snd_usb_soundblaster_remote_complete, mixer);
+ return 0;
+}
+
+#define snd_audigy2nx_led_info snd_ctl_boolean_mono_info
+
+static int snd_audigy2nx_led_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+ struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
+ int index = kcontrol->private_value;
+
+ ucontrol->value.integer.value[0] = mixer->audigy2nx_leds[index];
+ return 0;
+}
+
+static int snd_audigy2nx_led_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+ struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
+ int index = kcontrol->private_value;
+ int value = ucontrol->value.integer.value[0];
+ int err, changed;
+
+ if (value > 1)
+ return -EINVAL;
+ changed = value != mixer->audigy2nx_leds[index];
+ err = snd_usb_ctl_msg(mixer->chip->dev,
+ usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
+ value, index + 2, NULL, 0, 100);
+ if (err < 0)
+ return err;
+ mixer->audigy2nx_leds[index] = value;
+ return changed;
+}
+
+static struct snd_kcontrol_new snd_audigy2nx_controls[] = {
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "CMSS LED Switch",
+ .info = snd_audigy2nx_led_info,
+ .get = snd_audigy2nx_led_get,
+ .put = snd_audigy2nx_led_put,
+ .private_value = 0,
+ },
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Power LED Switch",
+ .info = snd_audigy2nx_led_info,
+ .get = snd_audigy2nx_led_get,
+ .put = snd_audigy2nx_led_put,
+ .private_value = 1,
+ },
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Dolby Digital LED Switch",
+ .info = snd_audigy2nx_led_info,
+ .get = snd_audigy2nx_led_get,
+ .put = snd_audigy2nx_led_put,
+ .private_value = 2,
+ },
+};
+
+static int snd_audigy2nx_controls_create(struct usb_mixer_interface *mixer)
+{
+ int i, err;
+
+ for (i = 0; i < ARRAY_SIZE(snd_audigy2nx_controls); ++i) {
+ if (i > 1 && /* Live24ext has 2 LEDs only */
+ (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
+ mixer->chip->usb_id == USB_ID(0x041e, 0x3048)))
+ break;
+ err = snd_ctl_add(mixer->chip->card,
+ snd_ctl_new1(&snd_audigy2nx_controls[i], mixer));
+ if (err < 0)
+ return err;
+ }
+ mixer->audigy2nx_leds[1] = 1; /* Power LED is on by default */
+ return 0;
+}
+
+static void snd_audigy2nx_proc_read(struct snd_info_entry *entry,
+ struct snd_info_buffer *buffer)
+{
+ static const struct sb_jack {
+ int unitid;
+ const char *name;
+ } jacks_audigy2nx[] = {
+ {4, "dig in "},
+ {7, "line in"},
+ {19, "spk out"},
+ {20, "hph out"},
+ {-1, NULL}
+ }, jacks_live24ext[] = {
+ {4, "line in"}, /* &1=Line, &2=Mic*/
+ {3, "hph out"}, /* headphones */
+ {0, "RC "}, /* last command, 6 bytes see rc_config above */
+ {-1, NULL}
+ };
+ const struct sb_jack *jacks;
+ struct usb_mixer_interface *mixer = entry->private_data;
+ int i, err;
+ u8 buf[3];
+
+ snd_iprintf(buffer, "%s jacks\n\n", mixer->chip->card->shortname);
+ if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020))
+ jacks = jacks_audigy2nx;
+ else if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
+ mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
+ jacks = jacks_live24ext;
+ else
+ return;
+
+ for (i = 0; jacks[i].name; ++i) {
+ snd_iprintf(buffer, "%s: ", jacks[i].name);
+ err = snd_usb_ctl_msg(mixer->chip->dev,
+ usb_rcvctrlpipe(mixer->chip->dev, 0),
+ UAC_GET_MEM, USB_DIR_IN | USB_TYPE_CLASS |
+ USB_RECIP_INTERFACE, 0,
+ jacks[i].unitid << 8, buf, 3, 100);
+ if (err == 3 && (buf[0] == 3 || buf[0] == 6))
+ snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]);
+ else
+ snd_iprintf(buffer, "?\n");
+ }
+}
+
+static int snd_xonar_u1_switch_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
+
+ ucontrol->value.integer.value[0] = !!(mixer->xonar_u1_status & 0x02);
+ return 0;
+}
+
+static int snd_xonar_u1_switch_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
+ u8 old_status, new_status;
+ int err, changed;
+
+ old_status = mixer->xonar_u1_status;
+ if (ucontrol->value.integer.value[0])
+ new_status = old_status | 0x02;
+ else
+ new_status = old_status & ~0x02;
+ changed = new_status != old_status;
+ err = snd_usb_ctl_msg(mixer->chip->dev,
+ usb_sndctrlpipe(mixer->chip->dev, 0), 0x08,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
+ 50, 0, &new_status, 1, 100);
+ if (err < 0)
+ return err;
+ mixer->xonar_u1_status = new_status;
+ return changed;
+}
+
+static struct snd_kcontrol_new snd_xonar_u1_output_switch = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Digital Playback Switch",
+ .info = snd_ctl_boolean_mono_info,
+ .get = snd_xonar_u1_switch_get,
+ .put = snd_xonar_u1_switch_put,
+};
+
+static int snd_xonar_u1_controls_create(struct usb_mixer_interface *mixer)
+{
+ int err;
+
+ err = snd_ctl_add(mixer->chip->card,
+ snd_ctl_new1(&snd_xonar_u1_output_switch, mixer));
+ if (err < 0)
+ return err;
+ mixer->xonar_u1_status = 0x05;
+ return 0;
+}
+
+void snd_emuusb_set_samplerate(struct snd_usb_audio *chip,
+ unsigned char samplerate_id)
+{
+ struct usb_mixer_interface *mixer;
+ struct usb_mixer_elem_info *cval;
+ int unitid = 12; /* SamleRate ExtensionUnit ID */
+
+ list_for_each_entry(mixer, &chip->mixer_list, list) {
+ cval = mixer->id_elems[unitid];
+ if (cval) {
+ snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR,
+ cval->control << 8,
+ samplerate_id);
+ snd_usb_mixer_notify_id(mixer, unitid);
+ }
+ break;
+ }
+}
+
+int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer)
+{
+ int err;
+ struct snd_info_entry *entry;
+
+ if ((err = snd_usb_soundblaster_remote_init(mixer)) < 0)
+ return err;
+
+ if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020) ||
+ mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
+ mixer->chip->usb_id == USB_ID(0x041e, 0x3048)) {
+ if ((err = snd_audigy2nx_controls_create(mixer)) < 0)
+ return err;
+ if (!snd_card_proc_new(mixer->chip->card, "audigy2nx", &entry))
+ snd_info_set_text_ops(entry, mixer,
+ snd_audigy2nx_proc_read);
+ }
+
+ if (mixer->chip->usb_id == USB_ID(0x0b05, 0x1739) ||
+ mixer->chip->usb_id == USB_ID(0x0b05, 0x1743)) {
+ err = snd_xonar_u1_controls_create(mixer);
+ if (err < 0)
+ return err;
+ }
+
+ return 0;
+}
+
+void snd_usb_mixer_rc_memory_change(struct usb_mixer_interface *mixer,
+ int unitid)
+{
+ if (!mixer->rc_cfg)
+ return;
+ /* unit ids specific to Extigy/Audigy 2 NX: */
+ switch (unitid) {
+ case 0: /* remote control */
+ mixer->rc_urb->dev = mixer->chip->dev;
+ usb_submit_urb(mixer->rc_urb, GFP_ATOMIC);
+ break;
+ case 4: /* digital in jack */
+ case 7: /* line in jacks */
+ case 19: /* speaker out jacks */
+ case 20: /* headphones out jack */
+ break;
+ /* live24ext: 4 = line-in jack */
+ case 3: /* hp-out jack (may actuate Mute) */
+ if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
+ mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
+ snd_usb_mixer_notify_id(mixer, mixer->rc_cfg->mute_mixer_id);
+ break;
+ default:
+ snd_printd(KERN_DEBUG "memory change in unknown unit %d\n", unitid);
+ break;
+ }
+}
+
--- /dev/null
+#ifndef SND_USB_MIXER_QUIRKS_H
+#define SND_USB_MIXER_QUIRKS_H
+
+int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer);
+
+void snd_emuusb_set_samplerate(struct snd_usb_audio *chip,
+ unsigned char samplerate_id);
+
+void snd_usb_mixer_rc_memory_change(struct usb_mixer_interface *mixer,
+ int unitid);
+
+#endif /* SND_USB_MIXER_QUIRKS_H */
+
--- /dev/null
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/init.h>
+#include <linux/usb.h>
+#include <linux/usb/audio.h>
+#include <linux/usb/audio-v2.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+
+#include "usbaudio.h"
+#include "card.h"
+#include "quirks.h"
+#include "debug.h"
+#include "urb.h"
+#include "helper.h"
+#include "pcm.h"
+
+/*
+ * return the current pcm pointer. just based on the hwptr_done value.
+ */
+static snd_pcm_uframes_t snd_usb_pcm_pointer(struct snd_pcm_substream *substream)
+{
+ struct snd_usb_substream *subs;
+ unsigned int hwptr_done;
+
+ subs = (struct snd_usb_substream *)substream->runtime->private_data;
+ spin_lock(&subs->lock);
+ hwptr_done = subs->hwptr_done;
+ spin_unlock(&subs->lock);
+ return hwptr_done / (substream->runtime->frame_bits >> 3);
+}
+
+/*
+ * find a matching audio format
+ */
+static struct audioformat *find_format(struct snd_usb_substream *subs, unsigned int format,
+ unsigned int rate, unsigned int channels)
+{
+ struct list_head *p;
+ struct audioformat *found = NULL;
+ int cur_attr = 0, attr;
+
+ list_for_each(p, &subs->fmt_list) {
+ struct audioformat *fp;
+ fp = list_entry(p, struct audioformat, list);
+ if (!(fp->formats & (1uLL << format)))
+ continue;
+ if (fp->channels != channels)
+ continue;
+ if (rate < fp->rate_min || rate > fp->rate_max)
+ continue;
+ if (! (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)) {
+ unsigned int i;
+ for (i = 0; i < fp->nr_rates; i++)
+ if (fp->rate_table[i] == rate)
+ break;
+ if (i >= fp->nr_rates)
+ continue;
+ }
+ attr = fp->ep_attr & USB_ENDPOINT_SYNCTYPE;
+ if (! found) {
+ found = fp;
+ cur_attr = attr;
+ continue;
+ }
+ /* avoid async out and adaptive in if the other method
+ * supports the same format.
+ * this is a workaround for the case like
+ * M-audio audiophile USB.
+ */
+ if (attr != cur_attr) {
+ if ((attr == USB_ENDPOINT_SYNC_ASYNC &&
+ subs->direction == SNDRV_PCM_STREAM_PLAYBACK) ||
+ (attr == USB_ENDPOINT_SYNC_ADAPTIVE &&
+ subs->direction == SNDRV_PCM_STREAM_CAPTURE))
+ continue;
+ if ((cur_attr == USB_ENDPOINT_SYNC_ASYNC &&
+ subs->direction == SNDRV_PCM_STREAM_PLAYBACK) ||
+ (cur_attr == USB_ENDPOINT_SYNC_ADAPTIVE &&
+ subs->direction == SNDRV_PCM_STREAM_CAPTURE)) {
+ found = fp;
+ cur_attr = attr;
+ continue;
+ }
+ }
+ /* find the format with the largest max. packet size */
+ if (fp->maxpacksize > found->maxpacksize) {
+ found = fp;
+ cur_attr = attr;
+ }
+ }
+ return found;
+}
+
+static int init_pitch_v1(struct snd_usb_audio *chip, int iface,
+ struct usb_host_interface *alts,
+ struct audioformat *fmt)
+{
+ struct usb_device *dev = chip->dev;
+ unsigned int ep;
+ unsigned char data[1];
+ int err;
+
+ ep = get_endpoint(alts, 0)->bEndpointAddress;
+
+ /* if endpoint doesn't have pitch control, bail out */
+ if (!(fmt->attributes & UAC_EP_CS_ATTR_PITCH_CONTROL))
+ return 0;
+
+ data[0] = 1;
+ if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR,
+ USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
+ UAC_EP_CS_ATTR_PITCH_CONTROL << 8, ep,
+ data, sizeof(data), 1000)) < 0) {
+ snd_printk(KERN_ERR "%d:%d:%d: cannot set enable PITCH\n",
+ dev->devnum, iface, ep);
+ return err;
+ }
+
+ return 0;
+}
+
+/*
+ * initialize the picth control and sample rate
+ */
+int snd_usb_init_pitch(struct snd_usb_audio *chip, int iface,
+ struct usb_host_interface *alts,
+ struct audioformat *fmt)
+{
+ struct usb_interface_descriptor *altsd = get_iface_desc(alts);
+
+ switch (altsd->bInterfaceProtocol) {
+ case UAC_VERSION_1:
+ return init_pitch_v1(chip, iface, alts, fmt);
+
+ case UAC_VERSION_2:
+ /* not implemented yet */
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static int set_sample_rate_v1(struct snd_usb_audio *chip, int iface,
+ struct usb_host_interface *alts,
+ struct audioformat *fmt, int rate)
+{
+ struct usb_device *dev = chip->dev;
+ unsigned int ep;
+ unsigned char data[3];
+ int err, crate;
+
+ ep = get_endpoint(alts, 0)->bEndpointAddress;
+ /* if endpoint doesn't have sampling rate control, bail out */
+ if (!(fmt->attributes & UAC_EP_CS_ATTR_SAMPLE_RATE)) {
+ snd_printk(KERN_WARNING "%d:%d:%d: endpoint lacks sample rate attribute bit, cannot set.\n",
+ dev->devnum, iface, fmt->altsetting);
+ return 0;
+ }
+
+ data[0] = rate;
+ data[1] = rate >> 8;
+ data[2] = rate >> 16;
+ if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR,
+ USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
+ UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep,
+ data, sizeof(data), 1000)) < 0) {
+ snd_printk(KERN_ERR "%d:%d:%d: cannot set freq %d to ep %#x\n",
+ dev->devnum, iface, fmt->altsetting, rate, ep);
+ return err;
+ }
+ if ((err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC_GET_CUR,
+ USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_IN,
+ UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep,
+ data, sizeof(data), 1000)) < 0) {
+ snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq at ep %#x\n",
+ dev->devnum, iface, fmt->altsetting, ep);
+ return 0; /* some devices don't support reading */
+ }
+ crate = data[0] | (data[1] << 8) | (data[2] << 16);
+ if (crate != rate) {
+ snd_printd(KERN_WARNING "current rate %d is different from the runtime rate %d\n", crate, rate);
+ // runtime->rate = crate;
+ }
+
+ return 0;
+}
+
+static int set_sample_rate_v2(struct snd_usb_audio *chip, int iface,
+ struct usb_host_interface *alts,
+ struct audioformat *fmt, int rate)
+{
+ struct usb_device *dev = chip->dev;
+ unsigned char data[4];
+ int err, crate;
+
+ data[0] = rate;
+ data[1] = rate >> 8;
+ data[2] = rate >> 16;
+ data[3] = rate >> 24;
+ if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC2_CS_CUR,
+ USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT,
+ UAC2_CS_CONTROL_SAM_FREQ << 8, chip->clock_id << 8,
+ data, sizeof(data), 1000)) < 0) {
+ snd_printk(KERN_ERR "%d:%d:%d: cannot set freq %d (v2)\n",
+ dev->devnum, iface, fmt->altsetting, rate);
+ return err;
+ }
+ if ((err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_CUR,
+ USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
+ UAC2_CS_CONTROL_SAM_FREQ << 8, chip->clock_id << 8,
+ data, sizeof(data), 1000)) < 0) {
+ snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq (v2)\n",
+ dev->devnum, iface, fmt->altsetting);
+ return err;
+ }
+ crate = data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24);
+ if (crate != rate)
+ snd_printd(KERN_WARNING "current rate %d is different from the runtime rate %d\n", crate, rate);
+
+ return 0;
+}
+
+int snd_usb_init_sample_rate(struct snd_usb_audio *chip, int iface,
+ struct usb_host_interface *alts,
+ struct audioformat *fmt, int rate)
+{
+ struct usb_interface_descriptor *altsd = get_iface_desc(alts);
+
+ switch (altsd->bInterfaceProtocol) {
+ case UAC_VERSION_1:
+ return set_sample_rate_v1(chip, iface, alts, fmt, rate);
+
+ case UAC_VERSION_2:
+ return set_sample_rate_v2(chip, iface, alts, fmt, rate);
+ }
+
+ return -EINVAL;
+}
+
+/*
+ * find a matching format and set up the interface
+ */
+static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt)
+{
+ struct usb_device *dev = subs->dev;
+ struct usb_host_interface *alts;
+ struct usb_interface_descriptor *altsd;
+ struct usb_interface *iface;
+ unsigned int ep, attr;
+ int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK;
+ int err;
+
+ iface = usb_ifnum_to_if(dev, fmt->iface);
+ if (WARN_ON(!iface))
+ return -EINVAL;
+ alts = &iface->altsetting[fmt->altset_idx];
+ altsd = get_iface_desc(alts);
+ if (WARN_ON(altsd->bAlternateSetting != fmt->altsetting))
+ return -EINVAL;
+
+ if (fmt == subs->cur_audiofmt)
+ return 0;
+
+ /* close the old interface */
+ if (subs->interface >= 0 && subs->interface != fmt->iface) {
+ if (usb_set_interface(subs->dev, subs->interface, 0) < 0) {
+ snd_printk(KERN_ERR "%d:%d:%d: return to setting 0 failed\n",
+ dev->devnum, fmt->iface, fmt->altsetting);
+ return -EIO;
+ }
+ subs->interface = -1;
+ subs->altset_idx = 0;
+ }
+
+ /* set interface */
+ if (subs->interface != fmt->iface || subs->altset_idx != fmt->altset_idx) {
+ if (usb_set_interface(dev, fmt->iface, fmt->altsetting) < 0) {
+ snd_printk(KERN_ERR "%d:%d:%d: usb_set_interface failed\n",
+ dev->devnum, fmt->iface, fmt->altsetting);
+ return -EIO;
+ }
+ snd_printdd(KERN_INFO "setting usb interface %d:%d\n", fmt->iface, fmt->altsetting);
+ subs->interface = fmt->iface;
+ subs->altset_idx = fmt->altset_idx;
+ }
+
+ /* create a data pipe */
+ ep = fmt->endpoint & USB_ENDPOINT_NUMBER_MASK;
+ if (is_playback)
+ subs->datapipe = usb_sndisocpipe(dev, ep);
+ else
+ subs->datapipe = usb_rcvisocpipe(dev, ep);
+ subs->datainterval = fmt->datainterval;
+ subs->syncpipe = subs->syncinterval = 0;
+ subs->maxpacksize = fmt->maxpacksize;
+ subs->fill_max = 0;
+
+ /* we need a sync pipe in async OUT or adaptive IN mode */
+ /* check the number of EP, since some devices have broken
+ * descriptors which fool us. if it has only one EP,
+ * assume it as adaptive-out or sync-in.
+ */
+ attr = fmt->ep_attr & USB_ENDPOINT_SYNCTYPE;
+ if (((is_playback && attr == USB_ENDPOINT_SYNC_ASYNC) ||
+ (! is_playback && attr == USB_ENDPOINT_SYNC_ADAPTIVE)) &&
+ altsd->bNumEndpoints >= 2) {
+ /* check sync-pipe endpoint */
+ /* ... and check descriptor size before accessing bSynchAddress
+ because there is a version of the SB Audigy 2 NX firmware lacking
+ the audio fields in the endpoint descriptors */
+ if ((get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != 0x01 ||
+ (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE &&
+ get_endpoint(alts, 1)->bSynchAddress != 0)) {
+ snd_printk(KERN_ERR "%d:%d:%d : invalid synch pipe\n",
+ dev->devnum, fmt->iface, fmt->altsetting);
+ return -EINVAL;
+ }
+ ep = get_endpoint(alts, 1)->bEndpointAddress;
+ if (get_endpoint(alts, 0)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE &&
+ (( is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress | USB_DIR_IN)) ||
+ (!is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress & ~USB_DIR_IN)))) {
+ snd_printk(KERN_ERR "%d:%d:%d : invalid synch pipe\n",
+ dev->devnum, fmt->iface, fmt->altsetting);
+ return -EINVAL;
+ }
+ ep &= USB_ENDPOINT_NUMBER_MASK;
+ if (is_playback)
+ subs->syncpipe = usb_rcvisocpipe(dev, ep);
+ else
+ subs->syncpipe = usb_sndisocpipe(dev, ep);
+ if (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE &&
+ get_endpoint(alts, 1)->bRefresh >= 1 &&
+ get_endpoint(alts, 1)->bRefresh <= 9)
+ subs->syncinterval = get_endpoint(alts, 1)->bRefresh;
+ else if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL)
+ subs->syncinterval = 1;
+ else if (get_endpoint(alts, 1)->bInterval >= 1 &&
+ get_endpoint(alts, 1)->bInterval <= 16)
+ subs->syncinterval = get_endpoint(alts, 1)->bInterval - 1;
+ else
+ subs->syncinterval = 3;
+ }
+
+ /* always fill max packet size */
+ if (fmt->attributes & UAC_EP_CS_ATTR_FILL_MAX)
+ subs->fill_max = 1;
+
+ if ((err = snd_usb_init_pitch(subs->stream->chip, subs->interface, alts, fmt)) < 0)
+ return err;
+
+ subs->cur_audiofmt = fmt;
+
+ snd_usb_set_format_quirk(subs, fmt);
+
+#if 0
+ printk(KERN_DEBUG
+ "setting done: format = %d, rate = %d..%d, channels = %d\n",
+ fmt->format, fmt->rate_min, fmt->rate_max, fmt->channels);
+ printk(KERN_DEBUG
+ " datapipe = 0x%0x, syncpipe = 0x%0x\n",
+ subs->datapipe, subs->syncpipe);
+#endif
+
+ return 0;
+}
+
+/*
+ * hw_params callback
+ *
+ * allocate a buffer and set the given audio format.
+ *
+ * so far we use a physically linear buffer although packetize transfer
+ * doesn't need a continuous area.
+ * if sg buffer is supported on the later version of alsa, we'll follow
+ * that.
+ */
+static int snd_usb_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params)
+{
+ struct snd_usb_substream *subs = substream->runtime->private_data;
+ struct audioformat *fmt;
+ unsigned int channels, rate, format;
+ int ret, changed;
+
+ ret = snd_pcm_lib_alloc_vmalloc_buffer(substream,
+ params_buffer_bytes(hw_params));
+ if (ret < 0)
+ return ret;
+
+ format = params_format(hw_params);
+ rate = params_rate(hw_params);
+ channels = params_channels(hw_params);
+ fmt = find_format(subs, format, rate, channels);
+ if (!fmt) {
+ snd_printd(KERN_DEBUG "cannot set format: format = %#x, rate = %d, channels = %d\n",
+ format, rate, channels);
+ return -EINVAL;
+ }
+
+ changed = subs->cur_audiofmt != fmt ||
+ subs->period_bytes != params_period_bytes(hw_params) ||
+ subs->cur_rate != rate;
+ if ((ret = set_format(subs, fmt)) < 0)
+ return ret;
+
+ if (subs->cur_rate != rate) {
+ struct usb_host_interface *alts;
+ struct usb_interface *iface;
+ iface = usb_ifnum_to_if(subs->dev, fmt->iface);
+ alts = &iface->altsetting[fmt->altset_idx];
+ ret = snd_usb_init_sample_rate(subs->stream->chip, subs->interface, alts, fmt, rate);
+ if (ret < 0)
+ return ret;
+ subs->cur_rate = rate;
+ }
+
+ if (changed) {
+ /* format changed */
+ snd_usb_release_substream_urbs(subs, 0);
+ /* influenced: period_bytes, channels, rate, format, */
+ ret = snd_usb_init_substream_urbs(subs, params_period_bytes(hw_params),
+ params_rate(hw_params),
+ snd_pcm_format_physical_width(params_format(hw_params)) *
+ params_channels(hw_params));
+ }
+
+ return ret;
+}
+
+/*
+ * hw_free callback
+ *
+ * reset the audio format and release the buffer
+ */
+static int snd_usb_hw_free(struct snd_pcm_substream *substream)
+{
+ struct snd_usb_substream *subs = substream->runtime->private_data;
+
+ subs->cur_audiofmt = NULL;
+ subs->cur_rate = 0;
+ subs->period_bytes = 0;
+ if (!subs->stream->chip->shutdown)
+ snd_usb_release_substream_urbs(subs, 0);
+ return snd_pcm_lib_free_vmalloc_buffer(substream);
+}
+
+/*
+ * prepare callback
+ *
+ * only a few subtle things...
+ */
+static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_usb_substream *subs = runtime->private_data;
+
+ if (! subs->cur_audiofmt) {
+ snd_printk(KERN_ERR "usbaudio: no format is specified!\n");
+ return -ENXIO;
+ }
+
+ /* some unit conversions in runtime */
+ subs->maxframesize = bytes_to_frames(runtime, subs->maxpacksize);
+ subs->curframesize = bytes_to_frames(runtime, subs->curpacksize);
+
+ /* reset the pointer */
+ subs->hwptr_done = 0;
+ subs->transfer_done = 0;
+ subs->phase = 0;
+ runtime->delay = 0;
+
+ return snd_usb_substream_prepare(subs, runtime);
+}
+
+static struct snd_pcm_hardware snd_usb_hardware =
+{
+ .info = SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_BATCH |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_BLOCK_TRANSFER |
+ SNDRV_PCM_INFO_PAUSE,
+ .buffer_bytes_max = 1024 * 1024,
+ .period_bytes_min = 64,
+ .period_bytes_max = 512 * 1024,
+ .periods_min = 2,
+ .periods_max = 1024,
+};
+
+static int hw_check_valid_format(struct snd_usb_substream *subs,
+ struct snd_pcm_hw_params *params,
+ struct audioformat *fp)
+{
+ struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
+ struct snd_interval *ct = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
+ struct snd_mask *fmts = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
+ struct snd_interval *pt = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME);
+ struct snd_mask check_fmts;
+ unsigned int ptime;
+
+ /* check the format */
+ snd_mask_none(&check_fmts);
+ check_fmts.bits[0] = (u32)fp->formats;
+ check_fmts.bits[1] = (u32)(fp->formats >> 32);
+ snd_mask_intersect(&check_fmts, fmts);
+ if (snd_mask_empty(&check_fmts)) {
+ hwc_debug(" > check: no supported format %d\n", fp->format);
+ return 0;
+ }
+ /* check the channels */
+ if (fp->channels < ct->min || fp->channels > ct->max) {
+ hwc_debug(" > check: no valid channels %d (%d/%d)\n", fp->channels, ct->min, ct->max);
+ return 0;
+ }
+ /* check the rate is within the range */
+ if (fp->rate_min > it->max || (fp->rate_min == it->max && it->openmax)) {
+ hwc_debug(" > check: rate_min %d > max %d\n", fp->rate_min, it->max);
+ return 0;
+ }
+ if (fp->rate_max < it->min || (fp->rate_max == it->min && it->openmin)) {
+ hwc_debug(" > check: rate_max %d < min %d\n", fp->rate_max, it->min);
+ return 0;
+ }
+ /* check whether the period time is >= the data packet interval */
+ if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH) {
+ ptime = 125 * (1 << fp->datainterval);
+ if (ptime > pt->max || (ptime == pt->max && pt->openmax)) {
+ hwc_debug(" > check: ptime %u > max %u\n", ptime, pt->max);
+ return 0;
+ }
+ }
+ return 1;
+}
+
+static int hw_rule_rate(struct snd_pcm_hw_params *params,
+ struct snd_pcm_hw_rule *rule)
+{
+ struct snd_usb_substream *subs = rule->private;
+ struct list_head *p;
+ struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
+ unsigned int rmin, rmax;
+ int changed;
+
+ hwc_debug("hw_rule_rate: (%d,%d)\n", it->min, it->max);
+ changed = 0;
+ rmin = rmax = 0;
+ list_for_each(p, &subs->fmt_list) {
+ struct audioformat *fp;
+ fp = list_entry(p, struct audioformat, list);
+ if (!hw_check_valid_format(subs, params, fp))
+ continue;
+ if (changed++) {
+ if (rmin > fp->rate_min)
+ rmin = fp->rate_min;
+ if (rmax < fp->rate_max)
+ rmax = fp->rate_max;
+ } else {
+ rmin = fp->rate_min;
+ rmax = fp->rate_max;
+ }
+ }
+
+ if (!changed) {
+ hwc_debug(" --> get empty\n");
+ it->empty = 1;
+ return -EINVAL;
+ }
+
+ changed = 0;
+ if (it->min < rmin) {
+ it->min = rmin;
+ it->openmin = 0;
+ changed = 1;
+ }
+ if (it->max > rmax) {
+ it->max = rmax;
+ it->openmax = 0;
+ changed = 1;
+ }
+ if (snd_interval_checkempty(it)) {
+ it->empty = 1;
+ return -EINVAL;
+ }
+ hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed);
+ return changed;
+}
+
+
+static int hw_rule_channels(struct snd_pcm_hw_params *params,
+ struct snd_pcm_hw_rule *rule)
+{
+ struct snd_usb_substream *subs = rule->private;
+ struct list_head *p;
+ struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
+ unsigned int rmin, rmax;
+ int changed;
+
+ hwc_debug("hw_rule_channels: (%d,%d)\n", it->min, it->max);
+ changed = 0;
+ rmin = rmax = 0;
+ list_for_each(p, &subs->fmt_list) {
+ struct audioformat *fp;
+ fp = list_entry(p, struct audioformat, list);
+ if (!hw_check_valid_format(subs, params, fp))
+ continue;
+ if (changed++) {
+ if (rmin > fp->channels)
+ rmin = fp->channels;
+ if (rmax < fp->channels)
+ rmax = fp->channels;
+ } else {
+ rmin = fp->channels;
+ rmax = fp->channels;
+ }
+ }
+
+ if (!changed) {
+ hwc_debug(" --> get empty\n");
+ it->empty = 1;
+ return -EINVAL;
+ }
+
+ changed = 0;
+ if (it->min < rmin) {
+ it->min = rmin;
+ it->openmin = 0;
+ changed = 1;
+ }
+ if (it->max > rmax) {
+ it->max = rmax;
+ it->openmax = 0;
+ changed = 1;
+ }
+ if (snd_interval_checkempty(it)) {
+ it->empty = 1;
+ return -EINVAL;
+ }
+ hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed);
+ return changed;
+}
+
+static int hw_rule_format(struct snd_pcm_hw_params *params,
+ struct snd_pcm_hw_rule *rule)
+{
+ struct snd_usb_substream *subs = rule->private;
+ struct list_head *p;
+ struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
+ u64 fbits;
+ u32 oldbits[2];
+ int changed;
+
+ hwc_debug("hw_rule_format: %x:%x\n", fmt->bits[0], fmt->bits[1]);
+ fbits = 0;
+ list_for_each(p, &subs->fmt_list) {
+ struct audioformat *fp;
+ fp = list_entry(p, struct audioformat, list);
+ if (!hw_check_valid_format(subs, params, fp))
+ continue;
+ fbits |= fp->formats;
+ }
+
+ oldbits[0] = fmt->bits[0];
+ oldbits[1] = fmt->bits[1];
+ fmt->bits[0] &= (u32)fbits;
+ fmt->bits[1] &= (u32)(fbits >> 32);
+ if (!fmt->bits[0] && !fmt->bits[1]) {
+ hwc_debug(" --> get empty\n");
+ return -EINVAL;
+ }
+ changed = (oldbits[0] != fmt->bits[0] || oldbits[1] != fmt->bits[1]);
+ hwc_debug(" --> %x:%x (changed = %d)\n", fmt->bits[0], fmt->bits[1], changed);
+ return changed;
+}
+
+static int hw_rule_period_time(struct snd_pcm_hw_params *params,
+ struct snd_pcm_hw_rule *rule)
+{
+ struct snd_usb_substream *subs = rule->private;
+ struct audioformat *fp;
+ struct snd_interval *it;
+ unsigned char min_datainterval;
+ unsigned int pmin;
+ int changed;
+
+ it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME);
+ hwc_debug("hw_rule_period_time: (%u,%u)\n", it->min, it->max);
+ min_datainterval = 0xff;
+ list_for_each_entry(fp, &subs->fmt_list, list) {
+ if (!hw_check_valid_format(subs, params, fp))
+ continue;
+ min_datainterval = min(min_datainterval, fp->datainterval);
+ }
+ if (min_datainterval == 0xff) {
+ hwc_debug(" --> get emtpy\n");
+ it->empty = 1;
+ return -EINVAL;
+ }
+ pmin = 125 * (1 << min_datainterval);
+ changed = 0;
+ if (it->min < pmin) {
+ it->min = pmin;
+ it->openmin = 0;
+ changed = 1;
+ }
+ if (snd_interval_checkempty(it)) {
+ it->empty = 1;
+ return -EINVAL;
+ }
+ hwc_debug(" --> (%u,%u) (changed = %d)\n", it->min, it->max, changed);
+ return changed;
+}
+
+/*
+ * If the device supports unusual bit rates, does the request meet these?
+ */
+static int snd_usb_pcm_check_knot(struct snd_pcm_runtime *runtime,
+ struct snd_usb_substream *subs)
+{
+ struct audioformat *fp;
+ int count = 0, needs_knot = 0;
+ int err;
+
+ list_for_each_entry(fp, &subs->fmt_list, list) {
+ if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)
+ return 0;
+ count += fp->nr_rates;
+ if (fp->rates & SNDRV_PCM_RATE_KNOT)
+ needs_knot = 1;
+ }
+ if (!needs_knot)
+ return 0;
+
+ subs->rate_list.count = count;
+ subs->rate_list.list = kmalloc(sizeof(int) * count, GFP_KERNEL);
+ subs->rate_list.mask = 0;
+ count = 0;
+ list_for_each_entry(fp, &subs->fmt_list, list) {
+ int i;
+ for (i = 0; i < fp->nr_rates; i++)
+ subs->rate_list.list[count++] = fp->rate_table[i];
+ }
+ err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+ &subs->rate_list);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+
+/*
+ * set up the runtime hardware information.
+ */
+
+static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substream *subs)
+{
+ struct list_head *p;
+ unsigned int pt, ptmin;
+ int param_period_time_if_needed;
+ int err;
+
+ runtime->hw.formats = subs->formats;
+
+ runtime->hw.rate_min = 0x7fffffff;
+ runtime->hw.rate_max = 0;
+ runtime->hw.channels_min = 256;
+ runtime->hw.channels_max = 0;
+ runtime->hw.rates = 0;
+ ptmin = UINT_MAX;
+ /* check min/max rates and channels */
+ list_for_each(p, &subs->fmt_list) {
+ struct audioformat *fp;
+ fp = list_entry(p, struct audioformat, list);
+ runtime->hw.rates |= fp->rates;
+ if (runtime->hw.rate_min > fp->rate_min)
+ runtime->hw.rate_min = fp->rate_min;
+ if (runtime->hw.rate_max < fp->rate_max)
+ runtime->hw.rate_max = fp->rate_max;
+ if (runtime->hw.channels_min > fp->channels)
+ runtime->hw.channels_min = fp->channels;
+ if (runtime->hw.channels_max < fp->channels)
+ runtime->hw.channels_max = fp->channels;
+ if (fp->fmt_type == UAC_FORMAT_TYPE_II && fp->frame_size > 0) {
+ /* FIXME: there might be more than one audio formats... */
+ runtime->hw.period_bytes_min = runtime->hw.period_bytes_max =
+ fp->frame_size;
+ }
+ pt = 125 * (1 << fp->datainterval);
+ ptmin = min(ptmin, pt);
+ }
+
+ param_period_time_if_needed = SNDRV_PCM_HW_PARAM_PERIOD_TIME;
+ if (snd_usb_get_speed(subs->dev) != USB_SPEED_HIGH)
+ /* full speed devices have fixed data packet interval */
+ ptmin = 1000;
+ if (ptmin == 1000)
+ /* if period time doesn't go below 1 ms, no rules needed */
+ param_period_time_if_needed = -1;
+ snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME,
+ ptmin, UINT_MAX);
+
+ if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+ hw_rule_rate, subs,
+ SNDRV_PCM_HW_PARAM_FORMAT,
+ SNDRV_PCM_HW_PARAM_CHANNELS,
+ param_period_time_if_needed,
+ -1)) < 0)
+ return err;
+ if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+ hw_rule_channels, subs,
+ SNDRV_PCM_HW_PARAM_FORMAT,
+ SNDRV_PCM_HW_PARAM_RATE,
+ param_period_time_if_needed,
+ -1)) < 0)
+ return err;
+ if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT,
+ hw_rule_format, subs,
+ SNDRV_PCM_HW_PARAM_RATE,
+ SNDRV_PCM_HW_PARAM_CHANNELS,
+ param_period_time_if_needed,
+ -1)) < 0)
+ return err;
+ if (param_period_time_if_needed >= 0) {
+ err = snd_pcm_hw_rule_add(runtime, 0,
+ SNDRV_PCM_HW_PARAM_PERIOD_TIME,
+ hw_rule_period_time, subs,
+ SNDRV_PCM_HW_PARAM_FORMAT,
+ SNDRV_PCM_HW_PARAM_CHANNELS,
+ SNDRV_PCM_HW_PARAM_RATE,
+ -1);
+ if (err < 0)
+ return err;
+ }
+ if ((err = snd_usb_pcm_check_knot(runtime, subs)) < 0)
+ return err;
+ return 0;
+}
+
+static int snd_usb_pcm_open(struct snd_pcm_substream *substream, int direction)
+{
+ struct snd_usb_stream *as = snd_pcm_substream_chip(substream);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_usb_substream *subs = &as->substream[direction];
+
+ subs->interface = -1;
+ subs->altset_idx = 0;
+ runtime->hw = snd_usb_hardware;
+ runtime->private_data = subs;
+ subs->pcm_substream = substream;
+ return setup_hw_info(runtime, subs);
+}
+
+static int snd_usb_pcm_close(struct snd_pcm_substream *substream, int direction)
+{
+ struct snd_usb_stream *as = snd_pcm_substream_chip(substream);
+ struct snd_usb_substream *subs = &as->substream[direction];
+
+ if (!as->chip->shutdown && subs->interface >= 0) {
+ usb_set_interface(subs->dev, subs->interface, 0);
+ subs->interface = -1;
+ }
+ subs->pcm_substream = NULL;
+ return 0;
+}
+
+static int snd_usb_playback_open(struct snd_pcm_substream *substream)
+{
+ return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_PLAYBACK);
+}
+
+static int snd_usb_playback_close(struct snd_pcm_substream *substream)
+{
+ return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_PLAYBACK);
+}
+
+static int snd_usb_capture_open(struct snd_pcm_substream *substream)
+{
+ return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_CAPTURE);
+}
+
+static int snd_usb_capture_close(struct snd_pcm_substream *substream)
+{
+ return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_CAPTURE);
+}
+
+static struct snd_pcm_ops snd_usb_playback_ops = {
+ .open = snd_usb_playback_open,
+ .close = snd_usb_playback_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_usb_hw_params,
+ .hw_free = snd_usb_hw_free,
+ .prepare = snd_usb_pcm_prepare,
+ .trigger = snd_usb_substream_playback_trigger,
+ .pointer = snd_usb_pcm_pointer,
+ .page = snd_pcm_lib_get_vmalloc_page,
+ .mmap = snd_pcm_lib_mmap_vmalloc,
+};
+
+static struct snd_pcm_ops snd_usb_capture_ops = {
+ .open = snd_usb_capture_open,
+ .close = snd_usb_capture_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_usb_hw_params,
+ .hw_free = snd_usb_hw_free,
+ .prepare = snd_usb_pcm_prepare,
+ .trigger = snd_usb_substream_capture_trigger,
+ .pointer = snd_usb_pcm_pointer,
+ .page = snd_pcm_lib_get_vmalloc_page,
+ .mmap = snd_pcm_lib_mmap_vmalloc,
+};
+
+void snd_usb_set_pcm_ops(struct snd_pcm *pcm, int stream)
+{
+ snd_pcm_set_ops(pcm, stream,
+ stream == SNDRV_PCM_STREAM_PLAYBACK ?
+ &snd_usb_playback_ops : &snd_usb_capture_ops);
+}
--- /dev/null
+#ifndef __USBAUDIO_PCM_H
+#define __USBAUDIO_PCM_H
+
+void snd_usb_set_pcm_ops(struct snd_pcm *pcm, int stream);
+
+int snd_usb_init_pitch(struct snd_usb_audio *chip, int iface,
+ struct usb_host_interface *alts,
+ struct audioformat *fmt);
+
+int snd_usb_init_sample_rate(struct snd_usb_audio *chip, int iface,
+ struct usb_host_interface *alts,
+ struct audioformat *fmt, int rate);
+
+#endif /* __USBAUDIO_PCM_H */
--- /dev/null
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/usb.h>
+
+#include <sound/core.h>
+#include <sound/info.h>
+#include <sound/pcm.h>
+
+#include "usbaudio.h"
+#include "helper.h"
+#include "card.h"
+#include "proc.h"
+
+/* convert our full speed USB rate into sampling rate in Hz */
+static inline unsigned get_full_speed_hz(unsigned int usb_rate)
+{
+ return (usb_rate * 125 + (1 << 12)) >> 13;
+}
+
+/* convert our high speed USB rate into sampling rate in Hz */
+static inline unsigned get_high_speed_hz(unsigned int usb_rate)
+{
+ return (usb_rate * 125 + (1 << 9)) >> 10;
+}
+
+/*
+ * common proc files to show the usb device info
+ */
+static void proc_audio_usbbus_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
+{
+ struct snd_usb_audio *chip = entry->private_data;
+ if (!chip->shutdown)
+ snd_iprintf(buffer, "%03d/%03d\n", chip->dev->bus->busnum, chip->dev->devnum);
+}
+
+static void proc_audio_usbid_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
+{
+ struct snd_usb_audio *chip = entry->private_data;
+ if (!chip->shutdown)
+ snd_iprintf(buffer, "%04x:%04x\n",
+ USB_ID_VENDOR(chip->usb_id),
+ USB_ID_PRODUCT(chip->usb_id));
+}
+
+void snd_usb_audio_create_proc(struct snd_usb_audio *chip)
+{
+ struct snd_info_entry *entry;
+ if (!snd_card_proc_new(chip->card, "usbbus", &entry))
+ snd_info_set_text_ops(entry, chip, proc_audio_usbbus_read);
+ if (!snd_card_proc_new(chip->card, "usbid", &entry))
+ snd_info_set_text_ops(entry, chip, proc_audio_usbid_read);
+}
+
+/*
+ * proc interface for list the supported pcm formats
+ */
+static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct snd_info_buffer *buffer)
+{
+ struct list_head *p;
+ static char *sync_types[4] = {
+ "NONE", "ASYNC", "ADAPTIVE", "SYNC"
+ };
+
+ list_for_each(p, &subs->fmt_list) {
+ struct audioformat *fp;
+ snd_pcm_format_t fmt;
+ fp = list_entry(p, struct audioformat, list);
+ snd_iprintf(buffer, " Interface %d\n", fp->iface);
+ snd_iprintf(buffer, " Altset %d\n", fp->altsetting);
+ snd_iprintf(buffer, " Format:");
+ for (fmt = 0; fmt <= SNDRV_PCM_FORMAT_LAST; ++fmt)
+ if (fp->formats & (1uLL << fmt))
+ snd_iprintf(buffer, " %s",
+ snd_pcm_format_name(fmt));
+ snd_iprintf(buffer, "\n");
+ snd_iprintf(buffer, " Channels: %d\n", fp->channels);
+ snd_iprintf(buffer, " Endpoint: %d %s (%s)\n",
+ fp->endpoint & USB_ENDPOINT_NUMBER_MASK,
+ fp->endpoint & USB_DIR_IN ? "IN" : "OUT",
+ sync_types[(fp->ep_attr & USB_ENDPOINT_SYNCTYPE) >> 2]);
+ if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) {
+ snd_iprintf(buffer, " Rates: %d - %d (continuous)\n",
+ fp->rate_min, fp->rate_max);
+ } else {
+ unsigned int i;
+ snd_iprintf(buffer, " Rates: ");
+ for (i = 0; i < fp->nr_rates; i++) {
+ if (i > 0)
+ snd_iprintf(buffer, ", ");
+ snd_iprintf(buffer, "%d", fp->rate_table[i]);
+ }
+ snd_iprintf(buffer, "\n");
+ }
+ if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH)
+ snd_iprintf(buffer, " Data packet interval: %d us\n",
+ 125 * (1 << fp->datainterval));
+ // snd_iprintf(buffer, " Max Packet Size = %d\n", fp->maxpacksize);
+ // snd_iprintf(buffer, " EP Attribute = %#x\n", fp->attributes);
+ }
+}
+
+static void proc_dump_substream_status(struct snd_usb_substream *subs, struct snd_info_buffer *buffer)
+{
+ if (subs->running) {
+ unsigned int i;
+ snd_iprintf(buffer, " Status: Running\n");
+ snd_iprintf(buffer, " Interface = %d\n", subs->interface);
+ snd_iprintf(buffer, " Altset = %d\n", subs->altset_idx);
+ snd_iprintf(buffer, " URBs = %d [ ", subs->nurbs);
+ for (i = 0; i < subs->nurbs; i++)
+ snd_iprintf(buffer, "%d ", subs->dataurb[i].packets);
+ snd_iprintf(buffer, "]\n");
+ snd_iprintf(buffer, " Packet Size = %d\n", subs->curpacksize);
+ snd_iprintf(buffer, " Momentary freq = %u Hz (%#x.%04x)\n",
+ snd_usb_get_speed(subs->dev) == USB_SPEED_FULL
+ ? get_full_speed_hz(subs->freqm)
+ : get_high_speed_hz(subs->freqm),
+ subs->freqm >> 16, subs->freqm & 0xffff);
+ } else {
+ snd_iprintf(buffer, " Status: Stop\n");
+ }
+}
+
+static void proc_pcm_format_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
+{
+ struct snd_usb_stream *stream = entry->private_data;
+
+ snd_iprintf(buffer, "%s : %s\n", stream->chip->card->longname, stream->pcm->name);
+
+ if (stream->substream[SNDRV_PCM_STREAM_PLAYBACK].num_formats) {
+ snd_iprintf(buffer, "\nPlayback:\n");
+ proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
+ proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
+ }
+ if (stream->substream[SNDRV_PCM_STREAM_CAPTURE].num_formats) {
+ snd_iprintf(buffer, "\nCapture:\n");
+ proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
+ proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
+ }
+}
+
+void snd_usb_proc_pcm_format_add(struct snd_usb_stream *stream)
+{
+ struct snd_info_entry *entry;
+ char name[32];
+ struct snd_card *card = stream->chip->card;
+
+ sprintf(name, "stream%d", stream->pcm_index);
+ if (!snd_card_proc_new(card, name, &entry))
+ snd_info_set_text_ops(entry, stream, proc_pcm_format_read);
+}
+
--- /dev/null
+#ifndef __USBAUDIO_PROC_H
+#define __USBAUDIO_PROC_H
+
+void snd_usb_audio_create_proc(struct snd_usb_audio *chip);
+void snd_usb_proc_pcm_format_add(struct snd_usb_stream *stream);
+
+#endif /* __USBAUDIO_PROC_H */
+
.ifnum = 0,
.type = QUIRK_AUDIO_FIXED_ENDPOINT,
.data = & (const struct audioformat) {
- .format = SNDRV_PCM_FORMAT_S16_LE,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
.channels = 4,
.iface = 0,
.altsetting = 1,
.ifnum = 1,
.type = QUIRK_AUDIO_FIXED_ENDPOINT,
.data = & (const struct audioformat) {
- .format = SNDRV_PCM_FORMAT_S16_LE,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
.channels = 2,
.iface = 1,
.altsetting = 1,
.ifnum = 0,
.type = QUIRK_AUDIO_FIXED_ENDPOINT,
.data = & (const struct audioformat) {
- .format = SNDRV_PCM_FORMAT_S24_3LE,
+ .formats = SNDRV_PCM_FMTBIT_S24_3LE,
.channels = 2,
.iface = 0,
.altsetting = 1,
.ifnum = 1,
.type = QUIRK_AUDIO_FIXED_ENDPOINT,
.data = & (const struct audioformat) {
- .format = SNDRV_PCM_FORMAT_S24_3LE,
+ .formats = SNDRV_PCM_FMTBIT_S24_3LE,
.channels = 2,
.iface = 1,
.altsetting = 1,
.ifnum = 1,
.type = QUIRK_AUDIO_FIXED_ENDPOINT,
.data = & (const struct audioformat) {
- .format = SNDRV_PCM_FORMAT_S24_3LE,
+ .formats = SNDRV_PCM_FMTBIT_S24_3LE,
.channels = 2,
.iface = 1,
.altsetting = 1,
.ifnum = 2,
.type = QUIRK_AUDIO_FIXED_ENDPOINT,
.data = & (const struct audioformat) {
- .format = SNDRV_PCM_FORMAT_S24_3LE,
+ .formats = SNDRV_PCM_FMTBIT_S24_3LE,
.channels = 2,
.iface = 2,
.altsetting = 1,
.ifnum = 1,
.type = QUIRK_AUDIO_FIXED_ENDPOINT,
.data = &(const struct audioformat) {
- .format = SNDRV_PCM_FORMAT_S24_3BE,
+ .formats = SNDRV_PCM_FMTBIT_S24_3BE,
.channels = 2,
.iface = 1,
.altsetting = 1,
--- /dev/null
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/init.h>
+#include <linux/usb.h>
+#include <linux/usb/audio.h>
+
+#include <sound/core.h>
+#include <sound/info.h>
+#include <sound/pcm.h>
+
+#include "usbaudio.h"
+#include "card.h"
+#include "mixer.h"
+#include "mixer_quirks.h"
+#include "midi.h"
+#include "quirks.h"
+#include "helper.h"
+#include "endpoint.h"
+#include "pcm.h"
+
+/*
+ * handle the quirks for the contained interfaces
+ */
+static int create_composite_quirk(struct snd_usb_audio *chip,
+ struct usb_interface *iface,
+ struct usb_driver *driver,
+ const struct snd_usb_audio_quirk *quirk)
+{
+ int probed_ifnum = get_iface_desc(iface->altsetting)->bInterfaceNumber;
+ int err;
+
+ for (quirk = quirk->data; quirk->ifnum >= 0; ++quirk) {
+ iface = usb_ifnum_to_if(chip->dev, quirk->ifnum);
+ if (!iface)
+ continue;
+ if (quirk->ifnum != probed_ifnum &&
+ usb_interface_claimed(iface))
+ continue;
+ err = snd_usb_create_quirk(chip, iface, driver, quirk);
+ if (err < 0)
+ return err;
+ if (quirk->ifnum != probed_ifnum)
+ usb_driver_claim_interface(driver, iface, (void *)-1L);
+ }
+ return 0;
+}
+
+static int ignore_interface_quirk(struct snd_usb_audio *chip,
+ struct usb_interface *iface,
+ struct usb_driver *driver,
+ const struct snd_usb_audio_quirk *quirk)
+{
+ return 0;
+}
+
+
+/*
+ * Allow alignment on audio sub-slot (channel samples) rather than
+ * on audio slots (audio frames)
+ */
+static int create_align_transfer_quirk(struct snd_usb_audio *chip,
+ struct usb_interface *iface,
+ struct usb_driver *driver,
+ const struct snd_usb_audio_quirk *quirk)
+{
+ chip->txfr_quirk = 1;
+ return 1; /* Continue with creating streams and mixer */
+}
+
+static int create_any_midi_quirk(struct snd_usb_audio *chip,
+ struct usb_interface *intf,
+ struct usb_driver *driver,
+ const struct snd_usb_audio_quirk *quirk)
+{
+ return snd_usbmidi_create(chip->card, intf, &chip->midi_list, quirk);
+}
+
+/*
+ * create a stream for an interface with proper descriptors
+ */
+static int create_standard_audio_quirk(struct snd_usb_audio *chip,
+ struct usb_interface *iface,
+ struct usb_driver *driver,
+ const struct snd_usb_audio_quirk *quirk)
+{
+ struct usb_host_interface *alts;
+ struct usb_interface_descriptor *altsd;
+ int err;
+
+ alts = &iface->altsetting[0];
+ altsd = get_iface_desc(alts);
+ err = snd_usb_parse_audio_endpoints(chip, altsd->bInterfaceNumber);
+ if (err < 0) {
+ snd_printk(KERN_ERR "cannot setup if %d: error %d\n",
+ altsd->bInterfaceNumber, err);
+ return err;
+ }
+ /* reset the current interface */
+ usb_set_interface(chip->dev, altsd->bInterfaceNumber, 0);
+ return 0;
+}
+
+/*
+ * create a stream for an endpoint/altsetting without proper descriptors
+ */
+static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
+ struct usb_interface *iface,
+ struct usb_driver *driver,
+ const struct snd_usb_audio_quirk *quirk)
+{
+ struct audioformat *fp;
+ struct usb_host_interface *alts;
+ int stream, err;
+ unsigned *rate_table = NULL;
+
+ fp = kmemdup(quirk->data, sizeof(*fp), GFP_KERNEL);
+ if (! fp) {
+ snd_printk(KERN_ERR "cannot memdup\n");
+ return -ENOMEM;
+ }
+ if (fp->nr_rates > 0) {
+ rate_table = kmalloc(sizeof(int) * fp->nr_rates, GFP_KERNEL);
+ if (!rate_table) {
+ kfree(fp);
+ return -ENOMEM;
+ }
+ memcpy(rate_table, fp->rate_table, sizeof(int) * fp->nr_rates);
+ fp->rate_table = rate_table;
+ }
+
+ stream = (fp->endpoint & USB_DIR_IN)
+ ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
+ err = snd_usb_add_audio_endpoint(chip, stream, fp);
+ if (err < 0) {
+ kfree(fp);
+ kfree(rate_table);
+ return err;
+ }
+ if (fp->iface != get_iface_desc(&iface->altsetting[0])->bInterfaceNumber ||
+ fp->altset_idx >= iface->num_altsetting) {
+ kfree(fp);
+ kfree(rate_table);
+ return -EINVAL;
+ }
+ alts = &iface->altsetting[fp->altset_idx];
+ fp->datainterval = snd_usb_parse_datainterval(chip, alts);
+ fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
+ usb_set_interface(chip->dev, fp->iface, 0);
+ snd_usb_init_pitch(chip, fp->iface, alts, fp);
+ snd_usb_init_sample_rate(chip, fp->iface, alts, fp, fp->rate_max);
+ return 0;
+}
+
+/*
+ * Create a stream for an Edirol UA-700/UA-25/UA-4FX interface.
+ * The only way to detect the sample rate is by looking at wMaxPacketSize.
+ */
+static int create_uaxx_quirk(struct snd_usb_audio *chip,
+ struct usb_interface *iface,
+ struct usb_driver *driver,
+ const struct snd_usb_audio_quirk *quirk)
+{
+ static const struct audioformat ua_format = {
+ .formats = SNDRV_PCM_FMTBIT_S24_3LE,
+ .channels = 2,
+ .fmt_type = UAC_FORMAT_TYPE_I,
+ .altsetting = 1,
+ .altset_idx = 1,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
+ };
+ struct usb_host_interface *alts;
+ struct usb_interface_descriptor *altsd;
+ struct audioformat *fp;
+ int stream, err;
+
+ /* both PCM and MIDI interfaces have 2 or more altsettings */
+ if (iface->num_altsetting < 2)
+ return -ENXIO;
+ alts = &iface->altsetting[1];
+ altsd = get_iface_desc(alts);
+
+ if (altsd->bNumEndpoints == 2) {
+ static const struct snd_usb_midi_endpoint_info ua700_ep = {
+ .out_cables = 0x0003,
+ .in_cables = 0x0003
+ };
+ static const struct snd_usb_audio_quirk ua700_quirk = {
+ .type = QUIRK_MIDI_FIXED_ENDPOINT,
+ .data = &ua700_ep
+ };
+ static const struct snd_usb_midi_endpoint_info uaxx_ep = {
+ .out_cables = 0x0001,
+ .in_cables = 0x0001
+ };
+ static const struct snd_usb_audio_quirk uaxx_quirk = {
+ .type = QUIRK_MIDI_FIXED_ENDPOINT,
+ .data = &uaxx_ep
+ };
+ const struct snd_usb_audio_quirk *quirk =
+ chip->usb_id == USB_ID(0x0582, 0x002b)
+ ? &ua700_quirk : &uaxx_quirk;
+ return snd_usbmidi_create(chip->card, iface,
+ &chip->midi_list, quirk);
+ }
+
+ if (altsd->bNumEndpoints != 1)
+ return -ENXIO;
+
+ fp = kmalloc(sizeof(*fp), GFP_KERNEL);
+ if (!fp)
+ return -ENOMEM;
+ memcpy(fp, &ua_format, sizeof(*fp));
+
+ fp->iface = altsd->bInterfaceNumber;
+ fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
+ fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
+ fp->datainterval = 0;
+ fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
+
+ switch (fp->maxpacksize) {
+ case 0x120:
+ fp->rate_max = fp->rate_min = 44100;
+ break;
+ case 0x138:
+ case 0x140:
+ fp->rate_max = fp->rate_min = 48000;
+ break;
+ case 0x258:
+ case 0x260:
+ fp->rate_max = fp->rate_min = 96000;
+ break;
+ default:
+ snd_printk(KERN_ERR "unknown sample rate\n");
+ kfree(fp);
+ return -ENXIO;
+ }
+
+ stream = (fp->endpoint & USB_DIR_IN)
+ ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
+ err = snd_usb_add_audio_endpoint(chip, stream, fp);
+ if (err < 0) {
+ kfree(fp);
+ return err;
+ }
+ usb_set_interface(chip->dev, fp->iface, 0);
+ return 0;
+}
+
+/*
+ * audio-interface quirks
+ *
+ * returns zero if no standard audio/MIDI parsing is needed.
+ * returns a postive value if standard audio/midi interfaces are parsed
+ * after this.
+ * returns a negative value at error.
+ */
+int snd_usb_create_quirk(struct snd_usb_audio *chip,
+ struct usb_interface *iface,
+ struct usb_driver *driver,
+ const struct snd_usb_audio_quirk *quirk)
+{
+ typedef int (*quirk_func_t)(struct snd_usb_audio *,
+ struct usb_interface *,
+ struct usb_driver *,
+ const struct snd_usb_audio_quirk *);
+ static const quirk_func_t quirk_funcs[] = {
+ [QUIRK_IGNORE_INTERFACE] = ignore_interface_quirk,
+ [QUIRK_COMPOSITE] = create_composite_quirk,
+ [QUIRK_MIDI_STANDARD_INTERFACE] = create_any_midi_quirk,
+ [QUIRK_MIDI_FIXED_ENDPOINT] = create_any_midi_quirk,
+ [QUIRK_MIDI_YAMAHA] = create_any_midi_quirk,
+ [QUIRK_MIDI_MIDIMAN] = create_any_midi_quirk,
+ [QUIRK_MIDI_NOVATION] = create_any_midi_quirk,
+ [QUIRK_MIDI_FASTLANE] = create_any_midi_quirk,
+ [QUIRK_MIDI_EMAGIC] = create_any_midi_quirk,
+ [QUIRK_MIDI_CME] = create_any_midi_quirk,
+ [QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk,
+ [QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk,
+ [QUIRK_AUDIO_EDIROL_UAXX] = create_uaxx_quirk,
+ [QUIRK_AUDIO_ALIGN_TRANSFER] = create_align_transfer_quirk
+ };
+
+ if (quirk->type < QUIRK_TYPE_COUNT) {
+ return quirk_funcs[quirk->type](chip, iface, driver, quirk);
+ } else {
+ snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type);
+ return -ENXIO;
+ }
+}
+
+/*
+ * boot quirks
+ */
+
+#define EXTIGY_FIRMWARE_SIZE_OLD 794
+#define EXTIGY_FIRMWARE_SIZE_NEW 483
+
+static int snd_usb_extigy_boot_quirk(struct usb_device *dev, struct usb_interface *intf)
+{
+ struct usb_host_config *config = dev->actconfig;
+ int err;
+
+ if (le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_OLD ||
+ le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_NEW) {
+ snd_printdd("sending Extigy boot sequence...\n");
+ /* Send message to force it to reconnect with full interface. */
+ err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev,0),
+ 0x10, 0x43, 0x0001, 0x000a, NULL, 0, 1000);
+ if (err < 0) snd_printdd("error sending boot message: %d\n", err);
+ err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
+ &dev->descriptor, sizeof(dev->descriptor));
+ config = dev->actconfig;
+ if (err < 0) snd_printdd("error usb_get_descriptor: %d\n", err);
+ err = usb_reset_configuration(dev);
+ if (err < 0) snd_printdd("error usb_reset_configuration: %d\n", err);
+ snd_printdd("extigy_boot: new boot length = %d\n",
+ le16_to_cpu(get_cfg_desc(config)->wTotalLength));
+ return -ENODEV; /* quit this anyway */
+ }
+ return 0;
+}
+
+static int snd_usb_audigy2nx_boot_quirk(struct usb_device *dev)
+{
+ u8 buf = 1;
+
+ snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), 0x2a,
+ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER,
+ 0, 0, &buf, 1, 1000);
+ if (buf == 0) {
+ snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0x29,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
+ 1, 2000, NULL, 0, 1000);
+ return -ENODEV;
+ }
+ return 0;
+}
+
+/*
+ * C-Media CM106/CM106+ have four 16-bit internal registers that are nicely
+ * documented in the device's data sheet.
+ */
+static int snd_usb_cm106_write_int_reg(struct usb_device *dev, int reg, u16 value)
+{
+ u8 buf[4];
+ buf[0] = 0x20;
+ buf[1] = value & 0xff;
+ buf[2] = (value >> 8) & 0xff;
+ buf[3] = reg;
+ return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_CONFIGURATION,
+ USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_ENDPOINT,
+ 0, 0, &buf, 4, 1000);
+}
+
+static int snd_usb_cm106_boot_quirk(struct usb_device *dev)
+{
+ /*
+ * Enable line-out driver mode, set headphone source to front
+ * channels, enable stereo mic.
+ */
+ return snd_usb_cm106_write_int_reg(dev, 2, 0x8004);
+}
+
+/*
+ * C-Media CM6206 is based on CM106 with two additional
+ * registers that are not documented in the data sheet.
+ * Values here are chosen based on sniffing USB traffic
+ * under Windows.
+ */
+static int snd_usb_cm6206_boot_quirk(struct usb_device *dev)
+{
+ int err, reg;
+ int val[] = {0x200c, 0x3000, 0xf800, 0x143f, 0x0000, 0x3000};
+
+ for (reg = 0; reg < ARRAY_SIZE(val); reg++) {
+ err = snd_usb_cm106_write_int_reg(dev, reg, val[reg]);
+ if (err < 0)
+ return err;
+ }
+
+ return err;
+}
+
+/*
+ * This call will put the synth in "USB send" mode, i.e it will send MIDI
+ * messages through USB (this is disabled at startup). The synth will
+ * acknowledge by sending a sysex on endpoint 0x85 and by displaying a USB
+ * sign on its LCD. Values here are chosen based on sniffing USB traffic
+ * under Windows.
+ */
+static int snd_usb_accessmusic_boot_quirk(struct usb_device *dev)
+{
+ int err, actual_length;
+
+ /* "midi send" enable */
+ static const u8 seq[] = { 0x4e, 0x73, 0x52, 0x01 };
+
+ void *buf = kmemdup(seq, ARRAY_SIZE(seq), GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+ err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x05), buf,
+ ARRAY_SIZE(seq), &actual_length, 1000);
+ kfree(buf);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+/*
+ * Setup quirks
+ */
+#define AUDIOPHILE_SET 0x01 /* if set, parse device_setup */
+#define AUDIOPHILE_SET_DTS 0x02 /* if set, enable DTS Digital Output */
+#define AUDIOPHILE_SET_96K 0x04 /* 48-96KHz rate if set, 8-48KHz otherwise */
+#define AUDIOPHILE_SET_24B 0x08 /* 24bits sample if set, 16bits otherwise */
+#define AUDIOPHILE_SET_DI 0x10 /* if set, enable Digital Input */
+#define AUDIOPHILE_SET_MASK 0x1F /* bit mask for setup value */
+#define AUDIOPHILE_SET_24B_48K_DI 0x19 /* value for 24bits+48KHz+Digital Input */
+#define AUDIOPHILE_SET_24B_48K_NOTDI 0x09 /* value for 24bits+48KHz+No Digital Input */
+#define AUDIOPHILE_SET_16B_48K_DI 0x11 /* value for 16bits+48KHz+Digital Input */
+#define AUDIOPHILE_SET_16B_48K_NOTDI 0x01 /* value for 16bits+48KHz+No Digital Input */
+
+static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip,
+ int iface,
+ int altno)
+{
+ /* Reset ALL ifaces to 0 altsetting.
+ * Call it for every possible altsetting of every interface.
+ */
+ usb_set_interface(chip->dev, iface, 0);
+
+ if (chip->setup & AUDIOPHILE_SET) {
+ if ((chip->setup & AUDIOPHILE_SET_DTS)
+ && altno != 6)
+ return 1; /* skip this altsetting */
+ if ((chip->setup & AUDIOPHILE_SET_96K)
+ && altno != 1)
+ return 1; /* skip this altsetting */
+ if ((chip->setup & AUDIOPHILE_SET_MASK) ==
+ AUDIOPHILE_SET_24B_48K_DI && altno != 2)
+ return 1; /* skip this altsetting */
+ if ((chip->setup & AUDIOPHILE_SET_MASK) ==
+ AUDIOPHILE_SET_24B_48K_NOTDI && altno != 3)
+ return 1; /* skip this altsetting */
+ if ((chip->setup & AUDIOPHILE_SET_MASK) ==
+ AUDIOPHILE_SET_16B_48K_DI && altno != 4)
+ return 1; /* skip this altsetting */
+ if ((chip->setup & AUDIOPHILE_SET_MASK) ==
+ AUDIOPHILE_SET_16B_48K_NOTDI && altno != 5)
+ return 1; /* skip this altsetting */
+ }
+
+ return 0; /* keep this altsetting */
+}
+
+int snd_usb_apply_interface_quirk(struct snd_usb_audio *chip,
+ int iface,
+ int altno)
+{
+ /* audiophile usb: skip altsets incompatible with device_setup */
+ if (chip->usb_id == USB_ID(0x0763, 0x2003))
+ return audiophile_skip_setting_quirk(chip, iface, altno);
+
+ return 0;
+}
+
+int snd_usb_apply_boot_quirk(struct usb_device *dev,
+ struct usb_interface *intf,
+ const struct snd_usb_audio_quirk *quirk)
+{
+ u32 id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
+ le16_to_cpu(dev->descriptor.idProduct));
+
+ /* SB Extigy needs special boot-up sequence */
+ /* if more models come, this will go to the quirk list. */
+ if (id == USB_ID(0x041e, 0x3000))
+ return snd_usb_extigy_boot_quirk(dev, intf);
+
+ /* SB Audigy 2 NX needs its own boot-up magic, too */
+ if (id == USB_ID(0x041e, 0x3020))
+ return snd_usb_audigy2nx_boot_quirk(dev);
+
+ /* C-Media CM106 / Turtle Beach Audio Advantage Roadie */
+ if (id == USB_ID(0x10f5, 0x0200))
+ return snd_usb_cm106_boot_quirk(dev);
+
+ /* C-Media CM6206 / CM106-Like Sound Device */
+ if (id == USB_ID(0x0d8c, 0x0102))
+ return snd_usb_cm6206_boot_quirk(dev);
+
+ /* Access Music VirusTI Desktop */
+ if (id == USB_ID(0x133e, 0x0815))
+ return snd_usb_accessmusic_boot_quirk(dev);
+
+ return 0;
+}
+
+/*
+ * check if the device uses big-endian samples
+ */
+int snd_usb_is_big_endian_format(struct snd_usb_audio *chip, struct audioformat *fp)
+{
+ switch (chip->usb_id) {
+ case USB_ID(0x0763, 0x2001): /* M-Audio Quattro: captured data only */
+ if (fp->endpoint & USB_DIR_IN)
+ return 1;
+ break;
+ case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
+ if (chip->setup == 0x00 ||
+ fp->altsetting==1 || fp->altsetting==2 || fp->altsetting==3)
+ return 1;
+ }
+ return 0;
+}
+
+/*
+ * For E-Mu 0404USB/0202USB/TrackerPre sample rate should be set for device,
+ * not for interface.
+ */
+
+enum {
+ EMU_QUIRK_SR_44100HZ = 0,
+ EMU_QUIRK_SR_48000HZ,
+ EMU_QUIRK_SR_88200HZ,
+ EMU_QUIRK_SR_96000HZ,
+ EMU_QUIRK_SR_176400HZ,
+ EMU_QUIRK_SR_192000HZ
+};
+
+static void set_format_emu_quirk(struct snd_usb_substream *subs,
+ struct audioformat *fmt)
+{
+ unsigned char emu_samplerate_id = 0;
+
+ /* When capture is active
+ * sample rate shouldn't be changed
+ * by playback substream
+ */
+ if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) {
+ if (subs->stream->substream[SNDRV_PCM_STREAM_CAPTURE].interface != -1)
+ return;
+ }
+
+ switch (fmt->rate_min) {
+ case 48000:
+ emu_samplerate_id = EMU_QUIRK_SR_48000HZ;
+ break;
+ case 88200:
+ emu_samplerate_id = EMU_QUIRK_SR_88200HZ;
+ break;
+ case 96000:
+ emu_samplerate_id = EMU_QUIRK_SR_96000HZ;
+ break;
+ case 176400:
+ emu_samplerate_id = EMU_QUIRK_SR_176400HZ;
+ break;
+ case 192000:
+ emu_samplerate_id = EMU_QUIRK_SR_192000HZ;
+ break;
+ default:
+ emu_samplerate_id = EMU_QUIRK_SR_44100HZ;
+ break;
+ }
+ snd_emuusb_set_samplerate(subs->stream->chip, emu_samplerate_id);
+}
+
+void snd_usb_set_format_quirk(struct snd_usb_substream *subs,
+ struct audioformat *fmt)
+{
+ switch (subs->stream->chip->usb_id) {
+ case USB_ID(0x041e, 0x3f02): /* E-Mu 0202 USB */
+ case USB_ID(0x041e, 0x3f04): /* E-Mu 0404 USB */
+ case USB_ID(0x041e, 0x3f0a): /* E-Mu Tracker Pre */
+ set_format_emu_quirk(subs, fmt);
+ break;
+ }
+}
+
--- /dev/null
+#ifndef __USBAUDIO_QUIRKS_H
+#define __USBAUDIO_QUIRKS_H
+
+int snd_usb_create_quirk(struct snd_usb_audio *chip,
+ struct usb_interface *iface,
+ struct usb_driver *driver,
+ const struct snd_usb_audio_quirk *quirk);
+
+int snd_usb_apply_interface_quirk(struct snd_usb_audio *chip,
+ int iface,
+ int altno);
+
+int snd_usb_apply_boot_quirk(struct usb_device *dev,
+ struct usb_interface *intf,
+ const struct snd_usb_audio_quirk *quirk);
+
+void snd_usb_set_format_quirk(struct snd_usb_substream *subs,
+ struct audioformat *fmt);
+
+int snd_usb_is_big_endian_format(struct snd_usb_audio *chip,
+ struct audioformat *fp);
+
+#endif /* __USBAUDIO_QUIRKS_H */
--- /dev/null
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/usb.h>
+#include <linux/usb/audio.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+
+#include "usbaudio.h"
+#include "helper.h"
+#include "card.h"
+#include "urb.h"
+#include "pcm.h"
+
+/*
+ * convert a sampling rate into our full speed format (fs/1000 in Q16.16)
+ * this will overflow at approx 524 kHz
+ */
+static inline unsigned get_usb_full_speed_rate(unsigned int rate)
+{
+ return ((rate << 13) + 62) / 125;
+}
+
+/*
+ * convert a sampling rate into USB high speed format (fs/8000 in Q16.16)
+ * this will overflow at approx 4 MHz
+ */
+static inline unsigned get_usb_high_speed_rate(unsigned int rate)
+{
+ return ((rate << 10) + 62) / 125;
+}
+
+/*
+ * unlink active urbs.
+ */
+static int deactivate_urbs(struct snd_usb_substream *subs, int force, int can_sleep)
+{
+ struct snd_usb_audio *chip = subs->stream->chip;
+ unsigned int i;
+ int async;
+
+ subs->running = 0;
+
+ if (!force && subs->stream->chip->shutdown) /* to be sure... */
+ return -EBADFD;
+
+ async = !can_sleep && chip->async_unlink;
+
+ if (!async && in_interrupt())
+ return 0;
+
+ for (i = 0; i < subs->nurbs; i++) {
+ if (test_bit(i, &subs->active_mask)) {
+ if (!test_and_set_bit(i, &subs->unlink_mask)) {
+ struct urb *u = subs->dataurb[i].urb;
+ if (async)
+ usb_unlink_urb(u);
+ else
+ usb_kill_urb(u);
+ }
+ }
+ }
+ if (subs->syncpipe) {
+ for (i = 0; i < SYNC_URBS; i++) {
+ if (test_bit(i+16, &subs->active_mask)) {
+ if (!test_and_set_bit(i+16, &subs->unlink_mask)) {
+ struct urb *u = subs->syncurb[i].urb;
+ if (async)
+ usb_unlink_urb(u);
+ else
+ usb_kill_urb(u);
+ }
+ }
+ }
+ }
+ return 0;
+}
+
+
+/*
+ * release a urb data
+ */
+static void release_urb_ctx(struct snd_urb_ctx *u)
+{
+ if (u->urb) {
+ if (u->buffer_size)
+ usb_buffer_free(u->subs->dev, u->buffer_size,
+ u->urb->transfer_buffer,
+ u->urb->transfer_dma);
+ usb_free_urb(u->urb);
+ u->urb = NULL;
+ }
+}
+
+/*
+ * wait until all urbs are processed.
+ */
+static int wait_clear_urbs(struct snd_usb_substream *subs)
+{
+ unsigned long end_time = jiffies + msecs_to_jiffies(1000);
+ unsigned int i;
+ int alive;
+
+ do {
+ alive = 0;
+ for (i = 0; i < subs->nurbs; i++) {
+ if (test_bit(i, &subs->active_mask))
+ alive++;
+ }
+ if (subs->syncpipe) {
+ for (i = 0; i < SYNC_URBS; i++) {
+ if (test_bit(i + 16, &subs->active_mask))
+ alive++;
+ }
+ }
+ if (! alive)
+ break;
+ schedule_timeout_uninterruptible(1);
+ } while (time_before(jiffies, end_time));
+ if (alive)
+ snd_printk(KERN_ERR "timeout: still %d active urbs..\n", alive);
+ return 0;
+}
+
+/*
+ * release a substream
+ */
+void snd_usb_release_substream_urbs(struct snd_usb_substream *subs, int force)
+{
+ int i;
+
+ /* stop urbs (to be sure) */
+ deactivate_urbs(subs, force, 1);
+ wait_clear_urbs(subs);
+
+ for (i = 0; i < MAX_URBS; i++)
+ release_urb_ctx(&subs->dataurb[i]);
+ for (i = 0; i < SYNC_URBS; i++)
+ release_urb_ctx(&subs->syncurb[i]);
+ usb_buffer_free(subs->dev, SYNC_URBS * 4,
+ subs->syncbuf, subs->sync_dma);
+ subs->syncbuf = NULL;
+ subs->nurbs = 0;
+}
+
+/*
+ * complete callback from data urb
+ */
+static void snd_complete_urb(struct urb *urb)
+{
+ struct snd_urb_ctx *ctx = urb->context;
+ struct snd_usb_substream *subs = ctx->subs;
+ struct snd_pcm_substream *substream = ctx->subs->pcm_substream;
+ int err = 0;
+
+ if ((subs->running && subs->ops.retire(subs, substream->runtime, urb)) ||
+ !subs->running || /* can be stopped during retire callback */
+ (err = subs->ops.prepare(subs, substream->runtime, urb)) < 0 ||
+ (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
+ clear_bit(ctx->index, &subs->active_mask);
+ if (err < 0) {
+ snd_printd(KERN_ERR "cannot submit urb (err = %d)\n", err);
+ snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
+ }
+ }
+}
+
+
+/*
+ * complete callback from sync urb
+ */
+static void snd_complete_sync_urb(struct urb *urb)
+{
+ struct snd_urb_ctx *ctx = urb->context;
+ struct snd_usb_substream *subs = ctx->subs;
+ struct snd_pcm_substream *substream = ctx->subs->pcm_substream;
+ int err = 0;
+
+ if ((subs->running && subs->ops.retire_sync(subs, substream->runtime, urb)) ||
+ !subs->running || /* can be stopped during retire callback */
+ (err = subs->ops.prepare_sync(subs, substream->runtime, urb)) < 0 ||
+ (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
+ clear_bit(ctx->index + 16, &subs->active_mask);
+ if (err < 0) {
+ snd_printd(KERN_ERR "cannot submit sync urb (err = %d)\n", err);
+ snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
+ }
+ }
+}
+
+
+/*
+ * initialize a substream for plaback/capture
+ */
+int snd_usb_init_substream_urbs(struct snd_usb_substream *subs,
+ unsigned int period_bytes,
+ unsigned int rate,
+ unsigned int frame_bits)
+{
+ unsigned int maxsize, i;
+ int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK;
+ unsigned int urb_packs, total_packs, packs_per_ms;
+ struct snd_usb_audio *chip = subs->stream->chip;
+
+ /* calculate the frequency in 16.16 format */
+ if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL)
+ subs->freqn = get_usb_full_speed_rate(rate);
+ else
+ subs->freqn = get_usb_high_speed_rate(rate);
+ subs->freqm = subs->freqn;
+ /* calculate max. frequency */
+ if (subs->maxpacksize) {
+ /* whatever fits into a max. size packet */
+ maxsize = subs->maxpacksize;
+ subs->freqmax = (maxsize / (frame_bits >> 3))
+ << (16 - subs->datainterval);
+ } else {
+ /* no max. packet size: just take 25% higher than nominal */
+ subs->freqmax = subs->freqn + (subs->freqn >> 2);
+ maxsize = ((subs->freqmax + 0xffff) * (frame_bits >> 3))
+ >> (16 - subs->datainterval);
+ }
+ subs->phase = 0;
+
+ if (subs->fill_max)
+ subs->curpacksize = subs->maxpacksize;
+ else
+ subs->curpacksize = maxsize;
+
+ if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH)
+ packs_per_ms = 8 >> subs->datainterval;
+ else
+ packs_per_ms = 1;
+
+ if (is_playback) {
+ urb_packs = max(chip->nrpacks, 1);
+ urb_packs = min(urb_packs, (unsigned int)MAX_PACKS);
+ } else
+ urb_packs = 1;
+ urb_packs *= packs_per_ms;
+ if (subs->syncpipe)
+ urb_packs = min(urb_packs, 1U << subs->syncinterval);
+
+ /* decide how many packets to be used */
+ if (is_playback) {
+ unsigned int minsize, maxpacks;
+ /* determine how small a packet can be */
+ minsize = (subs->freqn >> (16 - subs->datainterval))
+ * (frame_bits >> 3);
+ /* with sync from device, assume it can be 12% lower */
+ if (subs->syncpipe)
+ minsize -= minsize >> 3;
+ minsize = max(minsize, 1u);
+ total_packs = (period_bytes + minsize - 1) / minsize;
+ /* we need at least two URBs for queueing */
+ if (total_packs < 2) {
+ total_packs = 2;
+ } else {
+ /* and we don't want too long a queue either */
+ maxpacks = max(MAX_QUEUE * packs_per_ms, urb_packs * 2);
+ total_packs = min(total_packs, maxpacks);
+ }
+ } else {
+ while (urb_packs > 1 && urb_packs * maxsize >= period_bytes)
+ urb_packs >>= 1;
+ total_packs = MAX_URBS * urb_packs;
+ }
+ subs->nurbs = (total_packs + urb_packs - 1) / urb_packs;
+ if (subs->nurbs > MAX_URBS) {
+ /* too much... */
+ subs->nurbs = MAX_URBS;
+ total_packs = MAX_URBS * urb_packs;
+ } else if (subs->nurbs < 2) {
+ /* too little - we need at least two packets
+ * to ensure contiguous playback/capture
+ */
+ subs->nurbs = 2;
+ }
+
+ /* allocate and initialize data urbs */
+ for (i = 0; i < subs->nurbs; i++) {
+ struct snd_urb_ctx *u = &subs->dataurb[i];
+ u->index = i;
+ u->subs = subs;
+ u->packets = (i + 1) * total_packs / subs->nurbs
+ - i * total_packs / subs->nurbs;
+ u->buffer_size = maxsize * u->packets;
+ if (subs->fmt_type == UAC_FORMAT_TYPE_II)
+ u->packets++; /* for transfer delimiter */
+ u->urb = usb_alloc_urb(u->packets, GFP_KERNEL);
+ if (!u->urb)
+ goto out_of_memory;
+ u->urb->transfer_buffer =
+ usb_buffer_alloc(subs->dev, u->buffer_size, GFP_KERNEL,
+ &u->urb->transfer_dma);
+ if (!u->urb->transfer_buffer)
+ goto out_of_memory;
+ u->urb->pipe = subs->datapipe;
+ u->urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
+ u->urb->interval = 1 << subs->datainterval;
+ u->urb->context = u;
+ u->urb->complete = snd_complete_urb;
+ }
+
+ if (subs->syncpipe) {
+ /* allocate and initialize sync urbs */
+ subs->syncbuf = usb_buffer_alloc(subs->dev, SYNC_URBS * 4,
+ GFP_KERNEL, &subs->sync_dma);
+ if (!subs->syncbuf)
+ goto out_of_memory;
+ for (i = 0; i < SYNC_URBS; i++) {
+ struct snd_urb_ctx *u = &subs->syncurb[i];
+ u->index = i;
+ u->subs = subs;
+ u->packets = 1;
+ u->urb = usb_alloc_urb(1, GFP_KERNEL);
+ if (!u->urb)
+ goto out_of_memory;
+ u->urb->transfer_buffer = subs->syncbuf + i * 4;
+ u->urb->transfer_dma = subs->sync_dma + i * 4;
+ u->urb->transfer_buffer_length = 4;
+ u->urb->pipe = subs->syncpipe;
+ u->urb->transfer_flags = URB_ISO_ASAP |
+ URB_NO_TRANSFER_DMA_MAP;
+ u->urb->number_of_packets = 1;
+ u->urb->interval = 1 << subs->syncinterval;
+ u->urb->context = u;
+ u->urb->complete = snd_complete_sync_urb;
+ }
+ }
+ return 0;
+
+out_of_memory:
+ snd_usb_release_substream_urbs(subs, 0);
+ return -ENOMEM;
+}
+
+/*
+ * prepare urb for full speed capture sync pipe
+ *
+ * fill the length and offset of each urb descriptor.
+ * the fixed 10.14 frequency is passed through the pipe.
+ */
+static int prepare_capture_sync_urb(struct snd_usb_substream *subs,
+ struct snd_pcm_runtime *runtime,
+ struct urb *urb)
+{
+ unsigned char *cp = urb->transfer_buffer;
+ struct snd_urb_ctx *ctx = urb->context;
+
+ urb->dev = ctx->subs->dev; /* we need to set this at each time */
+ urb->iso_frame_desc[0].length = 3;
+ urb->iso_frame_desc[0].offset = 0;
+ cp[0] = subs->freqn >> 2;
+ cp[1] = subs->freqn >> 10;
+ cp[2] = subs->freqn >> 18;
+ return 0;
+}
+
+/*
+ * prepare urb for high speed capture sync pipe
+ *
+ * fill the length and offset of each urb descriptor.
+ * the fixed 12.13 frequency is passed as 16.16 through the pipe.
+ */
+static int prepare_capture_sync_urb_hs(struct snd_usb_substream *subs,
+ struct snd_pcm_runtime *runtime,
+ struct urb *urb)
+{
+ unsigned char *cp = urb->transfer_buffer;
+ struct snd_urb_ctx *ctx = urb->context;
+
+ urb->dev = ctx->subs->dev; /* we need to set this at each time */
+ urb->iso_frame_desc[0].length = 4;
+ urb->iso_frame_desc[0].offset = 0;
+ cp[0] = subs->freqn;
+ cp[1] = subs->freqn >> 8;
+ cp[2] = subs->freqn >> 16;
+ cp[3] = subs->freqn >> 24;
+ return 0;
+}
+
+/*
+ * process after capture sync complete
+ * - nothing to do
+ */
+static int retire_capture_sync_urb(struct snd_usb_substream *subs,
+ struct snd_pcm_runtime *runtime,
+ struct urb *urb)
+{
+ return 0;
+}
+
+/*
+ * prepare urb for capture data pipe
+ *
+ * fill the offset and length of each descriptor.
+ *
+ * we use a temporary buffer to write the captured data.
+ * since the length of written data is determined by host, we cannot
+ * write onto the pcm buffer directly... the data is thus copied
+ * later at complete callback to the global buffer.
+ */
+static int prepare_capture_urb(struct snd_usb_substream *subs,
+ struct snd_pcm_runtime *runtime,
+ struct urb *urb)
+{
+ int i, offs;
+ struct snd_urb_ctx *ctx = urb->context;
+
+ offs = 0;
+ urb->dev = ctx->subs->dev; /* we need to set this at each time */
+ for (i = 0; i < ctx->packets; i++) {
+ urb->iso_frame_desc[i].offset = offs;
+ urb->iso_frame_desc[i].length = subs->curpacksize;
+ offs += subs->curpacksize;
+ }
+ urb->transfer_buffer_length = offs;
+ urb->number_of_packets = ctx->packets;
+ return 0;
+}
+
+/*
+ * process after capture complete
+ *
+ * copy the data from each desctiptor to the pcm buffer, and
+ * update the current position.
+ */
+static int retire_capture_urb(struct snd_usb_substream *subs,
+ struct snd_pcm_runtime *runtime,
+ struct urb *urb)
+{
+ unsigned long flags;
+ unsigned char *cp;
+ int i;
+ unsigned int stride, frames, bytes, oldptr;
+ int period_elapsed = 0;
+
+ stride = runtime->frame_bits >> 3;
+
+ for (i = 0; i < urb->number_of_packets; i++) {
+ cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset;
+ if (urb->iso_frame_desc[i].status) {
+ snd_printd(KERN_ERR "frame %d active: %d\n", i, urb->iso_frame_desc[i].status);
+ // continue;
+ }
+ bytes = urb->iso_frame_desc[i].actual_length;
+ frames = bytes / stride;
+ if (!subs->txfr_quirk)
+ bytes = frames * stride;
+ if (bytes % (runtime->sample_bits >> 3) != 0) {
+#ifdef CONFIG_SND_DEBUG_VERBOSE
+ int oldbytes = bytes;
+#endif
+ bytes = frames * stride;
+ snd_printdd(KERN_ERR "Corrected urb data len. %d->%d\n",
+ oldbytes, bytes);
+ }
+ /* update the current pointer */
+ spin_lock_irqsave(&subs->lock, flags);
+ oldptr = subs->hwptr_done;
+ subs->hwptr_done += bytes;
+ if (subs->hwptr_done >= runtime->buffer_size * stride)
+ subs->hwptr_done -= runtime->buffer_size * stride;
+ frames = (bytes + (oldptr % stride)) / stride;
+ subs->transfer_done += frames;
+ if (subs->transfer_done >= runtime->period_size) {
+ subs->transfer_done -= runtime->period_size;
+ period_elapsed = 1;
+ }
+ spin_unlock_irqrestore(&subs->lock, flags);
+ /* copy a data chunk */
+ if (oldptr + bytes > runtime->buffer_size * stride) {
+ unsigned int bytes1 =
+ runtime->buffer_size * stride - oldptr;
+ memcpy(runtime->dma_area + oldptr, cp, bytes1);
+ memcpy(runtime->dma_area, cp + bytes1, bytes - bytes1);
+ } else {
+ memcpy(runtime->dma_area + oldptr, cp, bytes);
+ }
+ }
+ if (period_elapsed)
+ snd_pcm_period_elapsed(subs->pcm_substream);
+ return 0;
+}
+
+/*
+ * Process after capture complete when paused. Nothing to do.
+ */
+static int retire_paused_capture_urb(struct snd_usb_substream *subs,
+ struct snd_pcm_runtime *runtime,
+ struct urb *urb)
+{
+ return 0;
+}
+
+
+/*
+ * prepare urb for full speed playback sync pipe
+ *
+ * set up the offset and length to receive the current frequency.
+ */
+
+static int prepare_playback_sync_urb(struct snd_usb_substream *subs,
+ struct snd_pcm_runtime *runtime,
+ struct urb *urb)
+{
+ struct snd_urb_ctx *ctx = urb->context;
+
+ urb->dev = ctx->subs->dev; /* we need to set this at each time */
+ urb->iso_frame_desc[0].length = 3;
+ urb->iso_frame_desc[0].offset = 0;
+ return 0;
+}
+
+/*
+ * prepare urb for high speed playback sync pipe
+ *
+ * set up the offset and length to receive the current frequency.
+ */
+
+static int prepare_playback_sync_urb_hs(struct snd_usb_substream *subs,
+ struct snd_pcm_runtime *runtime,
+ struct urb *urb)
+{
+ struct snd_urb_ctx *ctx = urb->context;
+
+ urb->dev = ctx->subs->dev; /* we need to set this at each time */
+ urb->iso_frame_desc[0].length = 4;
+ urb->iso_frame_desc[0].offset = 0;
+ return 0;
+}
+
+/*
+ * process after full speed playback sync complete
+ *
+ * retrieve the current 10.14 frequency from pipe, and set it.
+ * the value is referred in prepare_playback_urb().
+ */
+static int retire_playback_sync_urb(struct snd_usb_substream *subs,
+ struct snd_pcm_runtime *runtime,
+ struct urb *urb)
+{
+ unsigned int f;
+ unsigned long flags;
+
+ if (urb->iso_frame_desc[0].status == 0 &&
+ urb->iso_frame_desc[0].actual_length == 3) {
+ f = combine_triple((u8*)urb->transfer_buffer) << 2;
+ if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) {
+ spin_lock_irqsave(&subs->lock, flags);
+ subs->freqm = f;
+ spin_unlock_irqrestore(&subs->lock, flags);
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * process after high speed playback sync complete
+ *
+ * retrieve the current 12.13 frequency from pipe, and set it.
+ * the value is referred in prepare_playback_urb().
+ */
+static int retire_playback_sync_urb_hs(struct snd_usb_substream *subs,
+ struct snd_pcm_runtime *runtime,
+ struct urb *urb)
+{
+ unsigned int f;
+ unsigned long flags;
+
+ if (urb->iso_frame_desc[0].status == 0 &&
+ urb->iso_frame_desc[0].actual_length == 4) {
+ f = combine_quad((u8*)urb->transfer_buffer) & 0x0fffffff;
+ if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) {
+ spin_lock_irqsave(&subs->lock, flags);
+ subs->freqm = f;
+ spin_unlock_irqrestore(&subs->lock, flags);
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * process after E-Mu 0202/0404/Tracker Pre high speed playback sync complete
+ *
+ * These devices return the number of samples per packet instead of the number
+ * of samples per microframe.
+ */
+static int retire_playback_sync_urb_hs_emu(struct snd_usb_substream *subs,
+ struct snd_pcm_runtime *runtime,
+ struct urb *urb)
+{
+ unsigned int f;
+ unsigned long flags;
+
+ if (urb->iso_frame_desc[0].status == 0 &&
+ urb->iso_frame_desc[0].actual_length == 4) {
+ f = combine_quad((u8*)urb->transfer_buffer) & 0x0fffffff;
+ f >>= subs->datainterval;
+ if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) {
+ spin_lock_irqsave(&subs->lock, flags);
+ subs->freqm = f;
+ spin_unlock_irqrestore(&subs->lock, flags);
+ }
+ }
+
+ return 0;
+}
+
+/* determine the number of frames in the next packet */
+static int snd_usb_audio_next_packet_size(struct snd_usb_substream *subs)
+{
+ if (subs->fill_max)
+ return subs->maxframesize;
+ else {
+ subs->phase = (subs->phase & 0xffff)
+ + (subs->freqm << subs->datainterval);
+ return min(subs->phase >> 16, subs->maxframesize);
+ }
+}
+
+/*
+ * Prepare urb for streaming before playback starts or when paused.
+ *
+ * We don't have any data, so we send silence.
+ */
+static int prepare_nodata_playback_urb(struct snd_usb_substream *subs,
+ struct snd_pcm_runtime *runtime,
+ struct urb *urb)
+{
+ unsigned int i, offs, counts;
+ struct snd_urb_ctx *ctx = urb->context;
+ int stride = runtime->frame_bits >> 3;
+
+ offs = 0;
+ urb->dev = ctx->subs->dev;
+ for (i = 0; i < ctx->packets; ++i) {
+ counts = snd_usb_audio_next_packet_size(subs);
+ urb->iso_frame_desc[i].offset = offs * stride;
+ urb->iso_frame_desc[i].length = counts * stride;
+ offs += counts;
+ }
+ urb->number_of_packets = ctx->packets;
+ urb->transfer_buffer_length = offs * stride;
+ memset(urb->transfer_buffer,
+ runtime->format == SNDRV_PCM_FORMAT_U8 ? 0x80 : 0,
+ offs * stride);
+ return 0;
+}
+
+/*
+ * prepare urb for playback data pipe
+ *
+ * Since a URB can handle only a single linear buffer, we must use double
+ * buffering when the data to be transferred overflows the buffer boundary.
+ * To avoid inconsistencies when updating hwptr_done, we use double buffering
+ * for all URBs.
+ */
+static int prepare_playback_urb(struct snd_usb_substream *subs,
+ struct snd_pcm_runtime *runtime,
+ struct urb *urb)
+{
+ int i, stride;
+ unsigned int counts, frames, bytes;
+ unsigned long flags;
+ int period_elapsed = 0;
+ struct snd_urb_ctx *ctx = urb->context;
+
+ stride = runtime->frame_bits >> 3;
+
+ frames = 0;
+ urb->dev = ctx->subs->dev; /* we need to set this at each time */
+ urb->number_of_packets = 0;
+ spin_lock_irqsave(&subs->lock, flags);
+ for (i = 0; i < ctx->packets; i++) {
+ counts = snd_usb_audio_next_packet_size(subs);
+ /* set up descriptor */
+ urb->iso_frame_desc[i].offset = frames * stride;
+ urb->iso_frame_desc[i].length = counts * stride;
+ frames += counts;
+ urb->number_of_packets++;
+ subs->transfer_done += counts;
+ if (subs->transfer_done >= runtime->period_size) {
+ subs->transfer_done -= runtime->period_size;
+ period_elapsed = 1;
+ if (subs->fmt_type == UAC_FORMAT_TYPE_II) {
+ if (subs->transfer_done > 0) {
+ /* FIXME: fill-max mode is not
+ * supported yet */
+ frames -= subs->transfer_done;
+ counts -= subs->transfer_done;
+ urb->iso_frame_desc[i].length =
+ counts * stride;
+ subs->transfer_done = 0;
+ }
+ i++;
+ if (i < ctx->packets) {
+ /* add a transfer delimiter */
+ urb->iso_frame_desc[i].offset =
+ frames * stride;
+ urb->iso_frame_desc[i].length = 0;
+ urb->number_of_packets++;
+ }
+ break;
+ }
+ }
+ if (period_elapsed) /* finish at the period boundary */
+ break;
+ }
+ bytes = frames * stride;
+ if (subs->hwptr_done + bytes > runtime->buffer_size * stride) {
+ /* err, the transferred area goes over buffer boundary. */
+ unsigned int bytes1 =
+ runtime->buffer_size * stride - subs->hwptr_done;
+ memcpy(urb->transfer_buffer,
+ runtime->dma_area + subs->hwptr_done, bytes1);
+ memcpy(urb->transfer_buffer + bytes1,
+ runtime->dma_area, bytes - bytes1);
+ } else {
+ memcpy(urb->transfer_buffer,
+ runtime->dma_area + subs->hwptr_done, bytes);
+ }
+ subs->hwptr_done += bytes;
+ if (subs->hwptr_done >= runtime->buffer_size * stride)
+ subs->hwptr_done -= runtime->buffer_size * stride;
+ runtime->delay += frames;
+ spin_unlock_irqrestore(&subs->lock, flags);
+ urb->transfer_buffer_length = bytes;
+ if (period_elapsed)
+ snd_pcm_period_elapsed(subs->pcm_substream);
+ return 0;
+}
+
+/*
+ * process after playback data complete
+ * - decrease the delay count again
+ */
+static int retire_playback_urb(struct snd_usb_substream *subs,
+ struct snd_pcm_runtime *runtime,
+ struct urb *urb)
+{
+ unsigned long flags;
+ int stride = runtime->frame_bits >> 3;
+ int processed = urb->transfer_buffer_length / stride;
+
+ spin_lock_irqsave(&subs->lock, flags);
+ if (processed > runtime->delay)
+ runtime->delay = 0;
+ else
+ runtime->delay -= processed;
+ spin_unlock_irqrestore(&subs->lock, flags);
+ return 0;
+}
+
+static const char *usb_error_string(int err)
+{
+ switch (err) {
+ case -ENODEV:
+ return "no device";
+ case -ENOENT:
+ return "endpoint not enabled";
+ case -EPIPE:
+ return "endpoint stalled";
+ case -ENOSPC:
+ return "not enough bandwidth";
+ case -ESHUTDOWN:
+ return "device disabled";
+ case -EHOSTUNREACH:
+ return "device suspended";
+ case -EINVAL:
+ case -EAGAIN:
+ case -EFBIG:
+ case -EMSGSIZE:
+ return "internal error";
+ default:
+ return "unknown error";
+ }
+}
+
+/*
+ * set up and start data/sync urbs
+ */
+static int start_urbs(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime)
+{
+ unsigned int i;
+ int err;
+
+ if (subs->stream->chip->shutdown)
+ return -EBADFD;
+
+ for (i = 0; i < subs->nurbs; i++) {
+ if (snd_BUG_ON(!subs->dataurb[i].urb))
+ return -EINVAL;
+ if (subs->ops.prepare(subs, runtime, subs->dataurb[i].urb) < 0) {
+ snd_printk(KERN_ERR "cannot prepare datapipe for urb %d\n", i);
+ goto __error;
+ }
+ }
+ if (subs->syncpipe) {
+ for (i = 0; i < SYNC_URBS; i++) {
+ if (snd_BUG_ON(!subs->syncurb[i].urb))
+ return -EINVAL;
+ if (subs->ops.prepare_sync(subs, runtime, subs->syncurb[i].urb) < 0) {
+ snd_printk(KERN_ERR "cannot prepare syncpipe for urb %d\n", i);
+ goto __error;
+ }
+ }
+ }
+
+ subs->active_mask = 0;
+ subs->unlink_mask = 0;
+ subs->running = 1;
+ for (i = 0; i < subs->nurbs; i++) {
+ err = usb_submit_urb(subs->dataurb[i].urb, GFP_ATOMIC);
+ if (err < 0) {
+ snd_printk(KERN_ERR "cannot submit datapipe "
+ "for urb %d, error %d: %s\n",
+ i, err, usb_error_string(err));
+ goto __error;
+ }
+ set_bit(i, &subs->active_mask);
+ }
+ if (subs->syncpipe) {
+ for (i = 0; i < SYNC_URBS; i++) {
+ err = usb_submit_urb(subs->syncurb[i].urb, GFP_ATOMIC);
+ if (err < 0) {
+ snd_printk(KERN_ERR "cannot submit syncpipe "
+ "for urb %d, error %d: %s\n",
+ i, err, usb_error_string(err));
+ goto __error;
+ }
+ set_bit(i + 16, &subs->active_mask);
+ }
+ }
+ return 0;
+
+ __error:
+ // snd_pcm_stop(subs->pcm_substream, SNDRV_PCM_STATE_XRUN);
+ deactivate_urbs(subs, 0, 0);
+ return -EPIPE;
+}
+
+
+/*
+ */
+static struct snd_urb_ops audio_urb_ops[2] = {
+ {
+ .prepare = prepare_nodata_playback_urb,
+ .retire = retire_playback_urb,
+ .prepare_sync = prepare_playback_sync_urb,
+ .retire_sync = retire_playback_sync_urb,
+ },
+ {
+ .prepare = prepare_capture_urb,
+ .retire = retire_capture_urb,
+ .prepare_sync = prepare_capture_sync_urb,
+ .retire_sync = retire_capture_sync_urb,
+ },
+};
+
+static struct snd_urb_ops audio_urb_ops_high_speed[2] = {
+ {
+ .prepare = prepare_nodata_playback_urb,
+ .retire = retire_playback_urb,
+ .prepare_sync = prepare_playback_sync_urb_hs,
+ .retire_sync = retire_playback_sync_urb_hs,
+ },
+ {
+ .prepare = prepare_capture_urb,
+ .retire = retire_capture_urb,
+ .prepare_sync = prepare_capture_sync_urb_hs,
+ .retire_sync = retire_capture_sync_urb,
+ },
+};
+
+/*
+ * initialize the substream instance.
+ */
+
+void snd_usb_init_substream(struct snd_usb_stream *as,
+ int stream, struct audioformat *fp)
+{
+ struct snd_usb_substream *subs = &as->substream[stream];
+
+ INIT_LIST_HEAD(&subs->fmt_list);
+ spin_lock_init(&subs->lock);
+
+ subs->stream = as;
+ subs->direction = stream;
+ subs->dev = as->chip->dev;
+ subs->txfr_quirk = as->chip->txfr_quirk;
+ if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL) {
+ subs->ops = audio_urb_ops[stream];
+ } else {
+ subs->ops = audio_urb_ops_high_speed[stream];
+ switch (as->chip->usb_id) {
+ case USB_ID(0x041e, 0x3f02): /* E-Mu 0202 USB */
+ case USB_ID(0x041e, 0x3f04): /* E-Mu 0404 USB */
+ case USB_ID(0x041e, 0x3f0a): /* E-Mu Tracker Pre */
+ subs->ops.retire_sync = retire_playback_sync_urb_hs_emu;
+ break;
+ }
+ }
+
+ snd_usb_set_pcm_ops(as->pcm, stream);
+
+ list_add_tail(&fp->list, &subs->fmt_list);
+ subs->formats |= fp->formats;
+ subs->endpoint = fp->endpoint;
+ subs->num_formats++;
+ subs->fmt_type = fp->fmt_type;
+}
+
+int snd_usb_substream_playback_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ struct snd_usb_substream *subs = substream->runtime->private_data;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ subs->ops.prepare = prepare_playback_urb;
+ return 0;
+ case SNDRV_PCM_TRIGGER_STOP:
+ return deactivate_urbs(subs, 0, 0);
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ subs->ops.prepare = prepare_nodata_playback_urb;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+int snd_usb_substream_capture_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ struct snd_usb_substream *subs = substream->runtime->private_data;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ subs->ops.retire = retire_capture_urb;
+ return start_urbs(subs, substream->runtime);
+ case SNDRV_PCM_TRIGGER_STOP:
+ return deactivate_urbs(subs, 0, 0);
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ subs->ops.retire = retire_paused_capture_urb;
+ return 0;
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ subs->ops.retire = retire_capture_urb;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+int snd_usb_substream_prepare(struct snd_usb_substream *subs,
+ struct snd_pcm_runtime *runtime)
+{
+ /* clear urbs (to be sure) */
+ deactivate_urbs(subs, 0, 1);
+ wait_clear_urbs(subs);
+
+ /* for playback, submit the URBs now; otherwise, the first hwptr_done
+ * updates for all URBs would happen at the same time when starting */
+ if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) {
+ subs->ops.prepare = prepare_nodata_playback_urb;
+ return start_urbs(subs, runtime);
+ }
+
+ return 0;
+}
+
--- /dev/null
+#ifndef __USBAUDIO_URB_H
+#define __USBAUDIO_URB_H
+
+void snd_usb_init_substream(struct snd_usb_stream *as,
+ int stream,
+ struct audioformat *fp);
+
+int snd_usb_init_substream_urbs(struct snd_usb_substream *subs,
+ unsigned int period_bytes,
+ unsigned int rate,
+ unsigned int frame_bits);
+
+void snd_usb_release_substream_urbs(struct snd_usb_substream *subs, int force);
+
+int snd_usb_substream_prepare(struct snd_usb_substream *subs,
+ struct snd_pcm_runtime *runtime);
+
+int snd_usb_substream_playback_trigger(struct snd_pcm_substream *substream, int cmd);
+int snd_usb_substream_capture_trigger(struct snd_pcm_substream *substream, int cmd);
+
+#endif /* __USBAUDIO_URB_H */
+++ /dev/null
-/*
- * (Tentative) USB Audio Driver for ALSA
- *
- * Main and PCM part
- *
- * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
- *
- * Many codes borrowed from audio.c by
- * Alan Cox (alan@lxorguk.ukuu.org.uk)
- * Thomas Sailer (sailer@ife.ee.ethz.ch)
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- *
- * NOTES:
- *
- * - async unlink should be used for avoiding the sleep inside lock.
- * 2.4.22 usb-uhci seems buggy for async unlinking and results in
- * oops. in such a cse, pass async_unlink=0 option.
- * - the linked URBs would be preferred but not used so far because of
- * the instability of unlinking.
- * - type II is not supported properly. there is no device which supports
- * this type *correctly*. SB extigy looks as if it supports, but it's
- * indeed an AC3 stream packed in SPDIF frames (i.e. no real AC3 stream).
- */
-
-
-#include <linux/bitops.h>
-#include <linux/init.h>
-#include <linux/list.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/usb.h>
-#include <linux/moduleparam.h>
-#include <linux/mutex.h>
-#include <linux/usb/audio.h>
-#include <linux/usb/ch9.h>
-
-#include <sound/core.h>
-#include <sound/info.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/initval.h>
-
-#include "usbaudio.h"
-
-
-MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
-MODULE_DESCRIPTION("USB Audio");
-MODULE_LICENSE("GPL");
-MODULE_SUPPORTED_DEVICE("{{Generic,USB Audio}}");
-
-
-static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
-static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
-static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;/* Enable this card */
-/* Vendor/product IDs for this card */
-static int vid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 };
-static int pid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 };
-static int nrpacks = 8; /* max. number of packets per urb */
-static int async_unlink = 1;
-static int device_setup[SNDRV_CARDS]; /* device parameter for this card*/
-static int ignore_ctl_error;
-
-module_param_array(index, int, NULL, 0444);
-MODULE_PARM_DESC(index, "Index value for the USB audio adapter.");
-module_param_array(id, charp, NULL, 0444);
-MODULE_PARM_DESC(id, "ID string for the USB audio adapter.");
-module_param_array(enable, bool, NULL, 0444);
-MODULE_PARM_DESC(enable, "Enable USB audio adapter.");
-module_param_array(vid, int, NULL, 0444);
-MODULE_PARM_DESC(vid, "Vendor ID for the USB audio device.");
-module_param_array(pid, int, NULL, 0444);
-MODULE_PARM_DESC(pid, "Product ID for the USB audio device.");
-module_param(nrpacks, int, 0644);
-MODULE_PARM_DESC(nrpacks, "Max. number of packets per URB.");
-module_param(async_unlink, bool, 0444);
-MODULE_PARM_DESC(async_unlink, "Use async unlink mode.");
-module_param_array(device_setup, int, NULL, 0444);
-MODULE_PARM_DESC(device_setup, "Specific device setup (if needed).");
-module_param(ignore_ctl_error, bool, 0444);
-MODULE_PARM_DESC(ignore_ctl_error,
- "Ignore errors from USB controller for mixer interfaces.");
-
-/*
- * debug the h/w constraints
- */
-/* #define HW_CONST_DEBUG */
-
-
-/*
- *
- */
-
-#define MAX_PACKS 20
-#define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */
-#define MAX_URBS 8
-#define SYNC_URBS 4 /* always four urbs for sync */
-#define MAX_QUEUE 24 /* try not to exceed this queue length, in ms */
-
-struct audioformat {
- struct list_head list;
- snd_pcm_format_t format; /* format type */
- unsigned int channels; /* # channels */
- unsigned int fmt_type; /* USB audio format type (1-3) */
- unsigned int frame_size; /* samples per frame for non-audio */
- int iface; /* interface number */
- unsigned char altsetting; /* corresponding alternate setting */
- unsigned char altset_idx; /* array index of altenate setting */
- unsigned char attributes; /* corresponding attributes of cs endpoint */
- unsigned char endpoint; /* endpoint */
- unsigned char ep_attr; /* endpoint attributes */
- unsigned char datainterval; /* log_2 of data packet interval */
- unsigned int maxpacksize; /* max. packet size */
- unsigned int rates; /* rate bitmasks */
- unsigned int rate_min, rate_max; /* min/max rates */
- unsigned int nr_rates; /* number of rate table entries */
- unsigned int *rate_table; /* rate table */
-};
-
-struct snd_usb_substream;
-
-struct snd_urb_ctx {
- struct urb *urb;
- unsigned int buffer_size; /* size of data buffer, if data URB */
- struct snd_usb_substream *subs;
- int index; /* index for urb array */
- int packets; /* number of packets per urb */
-};
-
-struct snd_urb_ops {
- int (*prepare)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u);
- int (*retire)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u);
- int (*prepare_sync)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u);
- int (*retire_sync)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u);
-};
-
-struct snd_usb_substream {
- struct snd_usb_stream *stream;
- struct usb_device *dev;
- struct snd_pcm_substream *pcm_substream;
- int direction; /* playback or capture */
- int interface; /* current interface */
- int endpoint; /* assigned endpoint */
- struct audioformat *cur_audiofmt; /* current audioformat pointer (for hw_params callback) */
- unsigned int cur_rate; /* current rate (for hw_params callback) */
- unsigned int period_bytes; /* current period bytes (for hw_params callback) */
- unsigned int format; /* USB data format */
- unsigned int datapipe; /* the data i/o pipe */
- unsigned int syncpipe; /* 1 - async out or adaptive in */
- unsigned int datainterval; /* log_2 of data packet interval */
- unsigned int syncinterval; /* P for adaptive mode, 0 otherwise */
- unsigned int freqn; /* nominal sampling rate in fs/fps in Q16.16 format */
- unsigned int freqm; /* momentary sampling rate in fs/fps in Q16.16 format */
- unsigned int freqmax; /* maximum sampling rate, used for buffer management */
- unsigned int phase; /* phase accumulator */
- unsigned int maxpacksize; /* max packet size in bytes */
- unsigned int maxframesize; /* max packet size in frames */
- unsigned int curpacksize; /* current packet size in bytes (for capture) */
- unsigned int curframesize; /* current packet size in frames (for capture) */
- unsigned int fill_max: 1; /* fill max packet size always */
- unsigned int txfr_quirk:1; /* allow sub-frame alignment */
- unsigned int fmt_type; /* USB audio format type (1-3) */
-
- unsigned int running: 1; /* running status */
-
- unsigned int hwptr_done; /* processed byte position in the buffer */
- unsigned int transfer_done; /* processed frames since last period update */
- unsigned long active_mask; /* bitmask of active urbs */
- unsigned long unlink_mask; /* bitmask of unlinked urbs */
-
- unsigned int nurbs; /* # urbs */
- struct snd_urb_ctx dataurb[MAX_URBS]; /* data urb table */
- struct snd_urb_ctx syncurb[SYNC_URBS]; /* sync urb table */
- char *syncbuf; /* sync buffer for all sync URBs */
- dma_addr_t sync_dma; /* DMA address of syncbuf */
-
- u64 formats; /* format bitmasks (all or'ed) */
- unsigned int num_formats; /* number of supported audio formats (list) */
- struct list_head fmt_list; /* format list */
- struct snd_pcm_hw_constraint_list rate_list; /* limited rates */
- spinlock_t lock;
-
- struct snd_urb_ops ops; /* callbacks (must be filled at init) */
-};
-
-
-struct snd_usb_stream {
- struct snd_usb_audio *chip;
- struct snd_pcm *pcm;
- int pcm_index;
- unsigned int fmt_type; /* USB audio format type (1-3) */
- struct snd_usb_substream substream[2];
- struct list_head list;
-};
-
-
-/*
- * we keep the snd_usb_audio_t instances by ourselves for merging
- * the all interfaces on the same card as one sound device.
- */
-
-static DEFINE_MUTEX(register_mutex);
-static struct snd_usb_audio *usb_chip[SNDRV_CARDS];
-
-
-/*
- * convert a sampling rate into our full speed format (fs/1000 in Q16.16)
- * this will overflow at approx 524 kHz
- */
-static inline unsigned get_usb_full_speed_rate(unsigned int rate)
-{
- return ((rate << 13) + 62) / 125;
-}
-
-/*
- * convert a sampling rate into USB high speed format (fs/8000 in Q16.16)
- * this will overflow at approx 4 MHz
- */
-static inline unsigned get_usb_high_speed_rate(unsigned int rate)
-{
- return ((rate << 10) + 62) / 125;
-}
-
-/* convert our full speed USB rate into sampling rate in Hz */
-static inline unsigned get_full_speed_hz(unsigned int usb_rate)
-{
- return (usb_rate * 125 + (1 << 12)) >> 13;
-}
-
-/* convert our high speed USB rate into sampling rate in Hz */
-static inline unsigned get_high_speed_hz(unsigned int usb_rate)
-{
- return (usb_rate * 125 + (1 << 9)) >> 10;
-}
-
-
-/*
- * prepare urb for full speed capture sync pipe
- *
- * fill the length and offset of each urb descriptor.
- * the fixed 10.14 frequency is passed through the pipe.
- */
-static int prepare_capture_sync_urb(struct snd_usb_substream *subs,
- struct snd_pcm_runtime *runtime,
- struct urb *urb)
-{
- unsigned char *cp = urb->transfer_buffer;
- struct snd_urb_ctx *ctx = urb->context;
-
- urb->dev = ctx->subs->dev; /* we need to set this at each time */
- urb->iso_frame_desc[0].length = 3;
- urb->iso_frame_desc[0].offset = 0;
- cp[0] = subs->freqn >> 2;
- cp[1] = subs->freqn >> 10;
- cp[2] = subs->freqn >> 18;
- return 0;
-}
-
-/*
- * prepare urb for high speed capture sync pipe
- *
- * fill the length and offset of each urb descriptor.
- * the fixed 12.13 frequency is passed as 16.16 through the pipe.
- */
-static int prepare_capture_sync_urb_hs(struct snd_usb_substream *subs,
- struct snd_pcm_runtime *runtime,
- struct urb *urb)
-{
- unsigned char *cp = urb->transfer_buffer;
- struct snd_urb_ctx *ctx = urb->context;
-
- urb->dev = ctx->subs->dev; /* we need to set this at each time */
- urb->iso_frame_desc[0].length = 4;
- urb->iso_frame_desc[0].offset = 0;
- cp[0] = subs->freqn;
- cp[1] = subs->freqn >> 8;
- cp[2] = subs->freqn >> 16;
- cp[3] = subs->freqn >> 24;
- return 0;
-}
-
-/*
- * process after capture sync complete
- * - nothing to do
- */
-static int retire_capture_sync_urb(struct snd_usb_substream *subs,
- struct snd_pcm_runtime *runtime,
- struct urb *urb)
-{
- return 0;
-}
-
-/*
- * prepare urb for capture data pipe
- *
- * fill the offset and length of each descriptor.
- *
- * we use a temporary buffer to write the captured data.
- * since the length of written data is determined by host, we cannot
- * write onto the pcm buffer directly... the data is thus copied
- * later at complete callback to the global buffer.
- */
-static int prepare_capture_urb(struct snd_usb_substream *subs,
- struct snd_pcm_runtime *runtime,
- struct urb *urb)
-{
- int i, offs;
- struct snd_urb_ctx *ctx = urb->context;
-
- offs = 0;
- urb->dev = ctx->subs->dev; /* we need to set this at each time */
- for (i = 0; i < ctx->packets; i++) {
- urb->iso_frame_desc[i].offset = offs;
- urb->iso_frame_desc[i].length = subs->curpacksize;
- offs += subs->curpacksize;
- }
- urb->transfer_buffer_length = offs;
- urb->number_of_packets = ctx->packets;
- return 0;
-}
-
-/*
- * process after capture complete
- *
- * copy the data from each desctiptor to the pcm buffer, and
- * update the current position.
- */
-static int retire_capture_urb(struct snd_usb_substream *subs,
- struct snd_pcm_runtime *runtime,
- struct urb *urb)
-{
- unsigned long flags;
- unsigned char *cp;
- int i;
- unsigned int stride, frames, bytes, oldptr;
- int period_elapsed = 0;
-
- stride = runtime->frame_bits >> 3;
-
- for (i = 0; i < urb->number_of_packets; i++) {
- cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset;
- if (urb->iso_frame_desc[i].status) {
- snd_printd(KERN_ERR "frame %d active: %d\n", i, urb->iso_frame_desc[i].status);
- // continue;
- }
- bytes = urb->iso_frame_desc[i].actual_length;
- frames = bytes / stride;
- if (!subs->txfr_quirk)
- bytes = frames * stride;
- if (bytes % (runtime->sample_bits >> 3) != 0) {
-#ifdef CONFIG_SND_DEBUG_VERBOSE
- int oldbytes = bytes;
-#endif
- bytes = frames * stride;
- snd_printdd(KERN_ERR "Corrected urb data len. %d->%d\n",
- oldbytes, bytes);
- }
- /* update the current pointer */
- spin_lock_irqsave(&subs->lock, flags);
- oldptr = subs->hwptr_done;
- subs->hwptr_done += bytes;
- if (subs->hwptr_done >= runtime->buffer_size * stride)
- subs->hwptr_done -= runtime->buffer_size * stride;
- frames = (bytes + (oldptr % stride)) / stride;
- subs->transfer_done += frames;
- if (subs->transfer_done >= runtime->period_size) {
- subs->transfer_done -= runtime->period_size;
- period_elapsed = 1;
- }
- spin_unlock_irqrestore(&subs->lock, flags);
- /* copy a data chunk */
- if (oldptr + bytes > runtime->buffer_size * stride) {
- unsigned int bytes1 =
- runtime->buffer_size * stride - oldptr;
- memcpy(runtime->dma_area + oldptr, cp, bytes1);
- memcpy(runtime->dma_area, cp + bytes1, bytes - bytes1);
- } else {
- memcpy(runtime->dma_area + oldptr, cp, bytes);
- }
- }
- if (period_elapsed)
- snd_pcm_period_elapsed(subs->pcm_substream);
- return 0;
-}
-
-/*
- * Process after capture complete when paused. Nothing to do.
- */
-static int retire_paused_capture_urb(struct snd_usb_substream *subs,
- struct snd_pcm_runtime *runtime,
- struct urb *urb)
-{
- return 0;
-}
-
-
-/*
- * prepare urb for full speed playback sync pipe
- *
- * set up the offset and length to receive the current frequency.
- */
-
-static int prepare_playback_sync_urb(struct snd_usb_substream *subs,
- struct snd_pcm_runtime *runtime,
- struct urb *urb)
-{
- struct snd_urb_ctx *ctx = urb->context;
-
- urb->dev = ctx->subs->dev; /* we need to set this at each time */
- urb->iso_frame_desc[0].length = 3;
- urb->iso_frame_desc[0].offset = 0;
- return 0;
-}
-
-/*
- * prepare urb for high speed playback sync pipe
- *
- * set up the offset and length to receive the current frequency.
- */
-
-static int prepare_playback_sync_urb_hs(struct snd_usb_substream *subs,
- struct snd_pcm_runtime *runtime,
- struct urb *urb)
-{
- struct snd_urb_ctx *ctx = urb->context;
-
- urb->dev = ctx->subs->dev; /* we need to set this at each time */
- urb->iso_frame_desc[0].length = 4;
- urb->iso_frame_desc[0].offset = 0;
- return 0;
-}
-
-/*
- * process after full speed playback sync complete
- *
- * retrieve the current 10.14 frequency from pipe, and set it.
- * the value is referred in prepare_playback_urb().
- */
-static int retire_playback_sync_urb(struct snd_usb_substream *subs,
- struct snd_pcm_runtime *runtime,
- struct urb *urb)
-{
- unsigned int f;
- unsigned long flags;
-
- if (urb->iso_frame_desc[0].status == 0 &&
- urb->iso_frame_desc[0].actual_length == 3) {
- f = combine_triple((u8*)urb->transfer_buffer) << 2;
- if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) {
- spin_lock_irqsave(&subs->lock, flags);
- subs->freqm = f;
- spin_unlock_irqrestore(&subs->lock, flags);
- }
- }
-
- return 0;
-}
-
-/*
- * process after high speed playback sync complete
- *
- * retrieve the current 12.13 frequency from pipe, and set it.
- * the value is referred in prepare_playback_urb().
- */
-static int retire_playback_sync_urb_hs(struct snd_usb_substream *subs,
- struct snd_pcm_runtime *runtime,
- struct urb *urb)
-{
- unsigned int f;
- unsigned long flags;
-
- if (urb->iso_frame_desc[0].status == 0 &&
- urb->iso_frame_desc[0].actual_length == 4) {
- f = combine_quad((u8*)urb->transfer_buffer) & 0x0fffffff;
- if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) {
- spin_lock_irqsave(&subs->lock, flags);
- subs->freqm = f;
- spin_unlock_irqrestore(&subs->lock, flags);
- }
- }
-
- return 0;
-}
-
-/*
- * process after E-Mu 0202/0404/Tracker Pre high speed playback sync complete
- *
- * These devices return the number of samples per packet instead of the number
- * of samples per microframe.
- */
-static int retire_playback_sync_urb_hs_emu(struct snd_usb_substream *subs,
- struct snd_pcm_runtime *runtime,
- struct urb *urb)
-{
- unsigned int f;
- unsigned long flags;
-
- if (urb->iso_frame_desc[0].status == 0 &&
- urb->iso_frame_desc[0].actual_length == 4) {
- f = combine_quad((u8*)urb->transfer_buffer) & 0x0fffffff;
- f >>= subs->datainterval;
- if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) {
- spin_lock_irqsave(&subs->lock, flags);
- subs->freqm = f;
- spin_unlock_irqrestore(&subs->lock, flags);
- }
- }
-
- return 0;
-}
-
-/* determine the number of frames in the next packet */
-static int snd_usb_audio_next_packet_size(struct snd_usb_substream *subs)
-{
- if (subs->fill_max)
- return subs->maxframesize;
- else {
- subs->phase = (subs->phase & 0xffff)
- + (subs->freqm << subs->datainterval);
- return min(subs->phase >> 16, subs->maxframesize);
- }
-}
-
-/*
- * Prepare urb for streaming before playback starts or when paused.
- *
- * We don't have any data, so we send silence.
- */
-static int prepare_nodata_playback_urb(struct snd_usb_substream *subs,
- struct snd_pcm_runtime *runtime,
- struct urb *urb)
-{
- unsigned int i, offs, counts;
- struct snd_urb_ctx *ctx = urb->context;
- int stride = runtime->frame_bits >> 3;
-
- offs = 0;
- urb->dev = ctx->subs->dev;
- for (i = 0; i < ctx->packets; ++i) {
- counts = snd_usb_audio_next_packet_size(subs);
- urb->iso_frame_desc[i].offset = offs * stride;
- urb->iso_frame_desc[i].length = counts * stride;
- offs += counts;
- }
- urb->number_of_packets = ctx->packets;
- urb->transfer_buffer_length = offs * stride;
- memset(urb->transfer_buffer,
- subs->cur_audiofmt->format == SNDRV_PCM_FORMAT_U8 ? 0x80 : 0,
- offs * stride);
- return 0;
-}
-
-/*
- * prepare urb for playback data pipe
- *
- * Since a URB can handle only a single linear buffer, we must use double
- * buffering when the data to be transferred overflows the buffer boundary.
- * To avoid inconsistencies when updating hwptr_done, we use double buffering
- * for all URBs.
- */
-static int prepare_playback_urb(struct snd_usb_substream *subs,
- struct snd_pcm_runtime *runtime,
- struct urb *urb)
-{
- int i, stride;
- unsigned int counts, frames, bytes;
- unsigned long flags;
- int period_elapsed = 0;
- struct snd_urb_ctx *ctx = urb->context;
-
- stride = runtime->frame_bits >> 3;
-
- frames = 0;
- urb->dev = ctx->subs->dev; /* we need to set this at each time */
- urb->number_of_packets = 0;
- spin_lock_irqsave(&subs->lock, flags);
- for (i = 0; i < ctx->packets; i++) {
- counts = snd_usb_audio_next_packet_size(subs);
- /* set up descriptor */
- urb->iso_frame_desc[i].offset = frames * stride;
- urb->iso_frame_desc[i].length = counts * stride;
- frames += counts;
- urb->number_of_packets++;
- subs->transfer_done += counts;
- if (subs->transfer_done >= runtime->period_size) {
- subs->transfer_done -= runtime->period_size;
- period_elapsed = 1;
- if (subs->fmt_type == UAC_FORMAT_TYPE_II) {
- if (subs->transfer_done > 0) {
- /* FIXME: fill-max mode is not
- * supported yet */
- frames -= subs->transfer_done;
- counts -= subs->transfer_done;
- urb->iso_frame_desc[i].length =
- counts * stride;
- subs->transfer_done = 0;
- }
- i++;
- if (i < ctx->packets) {
- /* add a transfer delimiter */
- urb->iso_frame_desc[i].offset =
- frames * stride;
- urb->iso_frame_desc[i].length = 0;
- urb->number_of_packets++;
- }
- break;
- }
- }
- if (period_elapsed) /* finish at the period boundary */
- break;
- }
- bytes = frames * stride;
- if (subs->hwptr_done + bytes > runtime->buffer_size * stride) {
- /* err, the transferred area goes over buffer boundary. */
- unsigned int bytes1 =
- runtime->buffer_size * stride - subs->hwptr_done;
- memcpy(urb->transfer_buffer,
- runtime->dma_area + subs->hwptr_done, bytes1);
- memcpy(urb->transfer_buffer + bytes1,
- runtime->dma_area, bytes - bytes1);
- } else {
- memcpy(urb->transfer_buffer,
- runtime->dma_area + subs->hwptr_done, bytes);
- }
- subs->hwptr_done += bytes;
- if (subs->hwptr_done >= runtime->buffer_size * stride)
- subs->hwptr_done -= runtime->buffer_size * stride;
- runtime->delay += frames;
- spin_unlock_irqrestore(&subs->lock, flags);
- urb->transfer_buffer_length = bytes;
- if (period_elapsed)
- snd_pcm_period_elapsed(subs->pcm_substream);
- return 0;
-}
-
-/*
- * process after playback data complete
- * - decrease the delay count again
- */
-static int retire_playback_urb(struct snd_usb_substream *subs,
- struct snd_pcm_runtime *runtime,
- struct urb *urb)
-{
- unsigned long flags;
- int stride = runtime->frame_bits >> 3;
- int processed = urb->transfer_buffer_length / stride;
-
- spin_lock_irqsave(&subs->lock, flags);
- if (processed > runtime->delay)
- runtime->delay = 0;
- else
- runtime->delay -= processed;
- spin_unlock_irqrestore(&subs->lock, flags);
- return 0;
-}
-
-
-/*
- */
-static struct snd_urb_ops audio_urb_ops[2] = {
- {
- .prepare = prepare_nodata_playback_urb,
- .retire = retire_playback_urb,
- .prepare_sync = prepare_playback_sync_urb,
- .retire_sync = retire_playback_sync_urb,
- },
- {
- .prepare = prepare_capture_urb,
- .retire = retire_capture_urb,
- .prepare_sync = prepare_capture_sync_urb,
- .retire_sync = retire_capture_sync_urb,
- },
-};
-
-static struct snd_urb_ops audio_urb_ops_high_speed[2] = {
- {
- .prepare = prepare_nodata_playback_urb,
- .retire = retire_playback_urb,
- .prepare_sync = prepare_playback_sync_urb_hs,
- .retire_sync = retire_playback_sync_urb_hs,
- },
- {
- .prepare = prepare_capture_urb,
- .retire = retire_capture_urb,
- .prepare_sync = prepare_capture_sync_urb_hs,
- .retire_sync = retire_capture_sync_urb,
- },
-};
-
-/*
- * complete callback from data urb
- */
-static void snd_complete_urb(struct urb *urb)
-{
- struct snd_urb_ctx *ctx = urb->context;
- struct snd_usb_substream *subs = ctx->subs;
- struct snd_pcm_substream *substream = ctx->subs->pcm_substream;
- int err = 0;
-
- if ((subs->running && subs->ops.retire(subs, substream->runtime, urb)) ||
- !subs->running || /* can be stopped during retire callback */
- (err = subs->ops.prepare(subs, substream->runtime, urb)) < 0 ||
- (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
- clear_bit(ctx->index, &subs->active_mask);
- if (err < 0) {
- snd_printd(KERN_ERR "cannot submit urb (err = %d)\n", err);
- snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
- }
- }
-}
-
-
-/*
- * complete callback from sync urb
- */
-static void snd_complete_sync_urb(struct urb *urb)
-{
- struct snd_urb_ctx *ctx = urb->context;
- struct snd_usb_substream *subs = ctx->subs;
- struct snd_pcm_substream *substream = ctx->subs->pcm_substream;
- int err = 0;
-
- if ((subs->running && subs->ops.retire_sync(subs, substream->runtime, urb)) ||
- !subs->running || /* can be stopped during retire callback */
- (err = subs->ops.prepare_sync(subs, substream->runtime, urb)) < 0 ||
- (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
- clear_bit(ctx->index + 16, &subs->active_mask);
- if (err < 0) {
- snd_printd(KERN_ERR "cannot submit sync urb (err = %d)\n", err);
- snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
- }
- }
-}
-
-
-/*
- * unlink active urbs.
- */
-static int deactivate_urbs(struct snd_usb_substream *subs, int force, int can_sleep)
-{
- unsigned int i;
- int async;
-
- subs->running = 0;
-
- if (!force && subs->stream->chip->shutdown) /* to be sure... */
- return -EBADFD;
-
- async = !can_sleep && async_unlink;
-
- if (!async && in_interrupt())
- return 0;
-
- for (i = 0; i < subs->nurbs; i++) {
- if (test_bit(i, &subs->active_mask)) {
- if (!test_and_set_bit(i, &subs->unlink_mask)) {
- struct urb *u = subs->dataurb[i].urb;
- if (async)
- usb_unlink_urb(u);
- else
- usb_kill_urb(u);
- }
- }
- }
- if (subs->syncpipe) {
- for (i = 0; i < SYNC_URBS; i++) {
- if (test_bit(i+16, &subs->active_mask)) {
- if (!test_and_set_bit(i+16, &subs->unlink_mask)) {
- struct urb *u = subs->syncurb[i].urb;
- if (async)
- usb_unlink_urb(u);
- else
- usb_kill_urb(u);
- }
- }
- }
- }
- return 0;
-}
-
-
-static const char *usb_error_string(int err)
-{
- switch (err) {
- case -ENODEV:
- return "no device";
- case -ENOENT:
- return "endpoint not enabled";
- case -EPIPE:
- return "endpoint stalled";
- case -ENOSPC:
- return "not enough bandwidth";
- case -ESHUTDOWN:
- return "device disabled";
- case -EHOSTUNREACH:
- return "device suspended";
- case -EINVAL:
- case -EAGAIN:
- case -EFBIG:
- case -EMSGSIZE:
- return "internal error";
- default:
- return "unknown error";
- }
-}
-
-/*
- * set up and start data/sync urbs
- */
-static int start_urbs(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime)
-{
- unsigned int i;
- int err;
-
- if (subs->stream->chip->shutdown)
- return -EBADFD;
-
- for (i = 0; i < subs->nurbs; i++) {
- if (snd_BUG_ON(!subs->dataurb[i].urb))
- return -EINVAL;
- if (subs->ops.prepare(subs, runtime, subs->dataurb[i].urb) < 0) {
- snd_printk(KERN_ERR "cannot prepare datapipe for urb %d\n", i);
- goto __error;
- }
- }
- if (subs->syncpipe) {
- for (i = 0; i < SYNC_URBS; i++) {
- if (snd_BUG_ON(!subs->syncurb[i].urb))
- return -EINVAL;
- if (subs->ops.prepare_sync(subs, runtime, subs->syncurb[i].urb) < 0) {
- snd_printk(KERN_ERR "cannot prepare syncpipe for urb %d\n", i);
- goto __error;
- }
- }
- }
-
- subs->active_mask = 0;
- subs->unlink_mask = 0;
- subs->running = 1;
- for (i = 0; i < subs->nurbs; i++) {
- err = usb_submit_urb(subs->dataurb[i].urb, GFP_ATOMIC);
- if (err < 0) {
- snd_printk(KERN_ERR "cannot submit datapipe "
- "for urb %d, error %d: %s\n",
- i, err, usb_error_string(err));
- goto __error;
- }
- set_bit(i, &subs->active_mask);
- }
- if (subs->syncpipe) {
- for (i = 0; i < SYNC_URBS; i++) {
- err = usb_submit_urb(subs->syncurb[i].urb, GFP_ATOMIC);
- if (err < 0) {
- snd_printk(KERN_ERR "cannot submit syncpipe "
- "for urb %d, error %d: %s\n",
- i, err, usb_error_string(err));
- goto __error;
- }
- set_bit(i + 16, &subs->active_mask);
- }
- }
- return 0;
-
- __error:
- // snd_pcm_stop(subs->pcm_substream, SNDRV_PCM_STATE_XRUN);
- deactivate_urbs(subs, 0, 0);
- return -EPIPE;
-}
-
-
-/*
- * wait until all urbs are processed.
- */
-static int wait_clear_urbs(struct snd_usb_substream *subs)
-{
- unsigned long end_time = jiffies + msecs_to_jiffies(1000);
- unsigned int i;
- int alive;
-
- do {
- alive = 0;
- for (i = 0; i < subs->nurbs; i++) {
- if (test_bit(i, &subs->active_mask))
- alive++;
- }
- if (subs->syncpipe) {
- for (i = 0; i < SYNC_URBS; i++) {
- if (test_bit(i + 16, &subs->active_mask))
- alive++;
- }
- }
- if (! alive)
- break;
- schedule_timeout_uninterruptible(1);
- } while (time_before(jiffies, end_time));
- if (alive)
- snd_printk(KERN_ERR "timeout: still %d active urbs..\n", alive);
- return 0;
-}
-
-
-/*
- * return the current pcm pointer. just based on the hwptr_done value.
- */
-static snd_pcm_uframes_t snd_usb_pcm_pointer(struct snd_pcm_substream *substream)
-{
- struct snd_usb_substream *subs;
- unsigned int hwptr_done;
-
- subs = (struct snd_usb_substream *)substream->runtime->private_data;
- spin_lock(&subs->lock);
- hwptr_done = subs->hwptr_done;
- spin_unlock(&subs->lock);
- return hwptr_done / (substream->runtime->frame_bits >> 3);
-}
-
-
-/*
- * start/stop playback substream
- */
-static int snd_usb_pcm_playback_trigger(struct snd_pcm_substream *substream,
- int cmd)
-{
- struct snd_usb_substream *subs = substream->runtime->private_data;
-
- switch (cmd) {
- case SNDRV_PCM_TRIGGER_START:
- case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
- subs->ops.prepare = prepare_playback_urb;
- return 0;
- case SNDRV_PCM_TRIGGER_STOP:
- return deactivate_urbs(subs, 0, 0);
- case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
- subs->ops.prepare = prepare_nodata_playback_urb;
- return 0;
- default:
- return -EINVAL;
- }
-}
-
-/*
- * start/stop capture substream
- */
-static int snd_usb_pcm_capture_trigger(struct snd_pcm_substream *substream,
- int cmd)
-{
- struct snd_usb_substream *subs = substream->runtime->private_data;
-
- switch (cmd) {
- case SNDRV_PCM_TRIGGER_START:
- subs->ops.retire = retire_capture_urb;
- return start_urbs(subs, substream->runtime);
- case SNDRV_PCM_TRIGGER_STOP:
- return deactivate_urbs(subs, 0, 0);
- case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
- subs->ops.retire = retire_paused_capture_urb;
- return 0;
- case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
- subs->ops.retire = retire_capture_urb;
- return 0;
- default:
- return -EINVAL;
- }
-}
-
-
-/*
- * release a urb data
- */
-static void release_urb_ctx(struct snd_urb_ctx *u)
-{
- if (u->urb) {
- if (u->buffer_size)
- usb_buffer_free(u->subs->dev, u->buffer_size,
- u->urb->transfer_buffer,
- u->urb->transfer_dma);
- usb_free_urb(u->urb);
- u->urb = NULL;
- }
-}
-
-/*
- * release a substream
- */
-static void release_substream_urbs(struct snd_usb_substream *subs, int force)
-{
- int i;
-
- /* stop urbs (to be sure) */
- deactivate_urbs(subs, force, 1);
- wait_clear_urbs(subs);
-
- for (i = 0; i < MAX_URBS; i++)
- release_urb_ctx(&subs->dataurb[i]);
- for (i = 0; i < SYNC_URBS; i++)
- release_urb_ctx(&subs->syncurb[i]);
- usb_buffer_free(subs->dev, SYNC_URBS * 4,
- subs->syncbuf, subs->sync_dma);
- subs->syncbuf = NULL;
- subs->nurbs = 0;
-}
-
-/*
- * initialize a substream for plaback/capture
- */
-static int init_substream_urbs(struct snd_usb_substream *subs, unsigned int period_bytes,
- unsigned int rate, unsigned int frame_bits)
-{
- unsigned int maxsize, i;
- int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK;
- unsigned int urb_packs, total_packs, packs_per_ms;
-
- /* calculate the frequency in 16.16 format */
- if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL)
- subs->freqn = get_usb_full_speed_rate(rate);
- else
- subs->freqn = get_usb_high_speed_rate(rate);
- subs->freqm = subs->freqn;
- /* calculate max. frequency */
- if (subs->maxpacksize) {
- /* whatever fits into a max. size packet */
- maxsize = subs->maxpacksize;
- subs->freqmax = (maxsize / (frame_bits >> 3))
- << (16 - subs->datainterval);
- } else {
- /* no max. packet size: just take 25% higher than nominal */
- subs->freqmax = subs->freqn + (subs->freqn >> 2);
- maxsize = ((subs->freqmax + 0xffff) * (frame_bits >> 3))
- >> (16 - subs->datainterval);
- }
- subs->phase = 0;
-
- if (subs->fill_max)
- subs->curpacksize = subs->maxpacksize;
- else
- subs->curpacksize = maxsize;
-
- if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH)
- packs_per_ms = 8 >> subs->datainterval;
- else
- packs_per_ms = 1;
-
- if (is_playback) {
- urb_packs = max(nrpacks, 1);
- urb_packs = min(urb_packs, (unsigned int)MAX_PACKS);
- } else
- urb_packs = 1;
- urb_packs *= packs_per_ms;
- if (subs->syncpipe)
- urb_packs = min(urb_packs, 1U << subs->syncinterval);
-
- /* decide how many packets to be used */
- if (is_playback) {
- unsigned int minsize, maxpacks;
- /* determine how small a packet can be */
- minsize = (subs->freqn >> (16 - subs->datainterval))
- * (frame_bits >> 3);
- /* with sync from device, assume it can be 12% lower */
- if (subs->syncpipe)
- minsize -= minsize >> 3;
- minsize = max(minsize, 1u);
- total_packs = (period_bytes + minsize - 1) / minsize;
- /* we need at least two URBs for queueing */
- if (total_packs < 2) {
- total_packs = 2;
- } else {
- /* and we don't want too long a queue either */
- maxpacks = max(MAX_QUEUE * packs_per_ms, urb_packs * 2);
- total_packs = min(total_packs, maxpacks);
- }
- } else {
- while (urb_packs > 1 && urb_packs * maxsize >= period_bytes)
- urb_packs >>= 1;
- total_packs = MAX_URBS * urb_packs;
- }
- subs->nurbs = (total_packs + urb_packs - 1) / urb_packs;
- if (subs->nurbs > MAX_URBS) {
- /* too much... */
- subs->nurbs = MAX_URBS;
- total_packs = MAX_URBS * urb_packs;
- } else if (subs->nurbs < 2) {
- /* too little - we need at least two packets
- * to ensure contiguous playback/capture
- */
- subs->nurbs = 2;
- }
-
- /* allocate and initialize data urbs */
- for (i = 0; i < subs->nurbs; i++) {
- struct snd_urb_ctx *u = &subs->dataurb[i];
- u->index = i;
- u->subs = subs;
- u->packets = (i + 1) * total_packs / subs->nurbs
- - i * total_packs / subs->nurbs;
- u->buffer_size = maxsize * u->packets;
- if (subs->fmt_type == UAC_FORMAT_TYPE_II)
- u->packets++; /* for transfer delimiter */
- u->urb = usb_alloc_urb(u->packets, GFP_KERNEL);
- if (!u->urb)
- goto out_of_memory;
- u->urb->transfer_buffer =
- usb_buffer_alloc(subs->dev, u->buffer_size, GFP_KERNEL,
- &u->urb->transfer_dma);
- if (!u->urb->transfer_buffer)
- goto out_of_memory;
- u->urb->pipe = subs->datapipe;
- u->urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
- u->urb->interval = 1 << subs->datainterval;
- u->urb->context = u;
- u->urb->complete = snd_complete_urb;
- }
-
- if (subs->syncpipe) {
- /* allocate and initialize sync urbs */
- subs->syncbuf = usb_buffer_alloc(subs->dev, SYNC_URBS * 4,
- GFP_KERNEL, &subs->sync_dma);
- if (!subs->syncbuf)
- goto out_of_memory;
- for (i = 0; i < SYNC_URBS; i++) {
- struct snd_urb_ctx *u = &subs->syncurb[i];
- u->index = i;
- u->subs = subs;
- u->packets = 1;
- u->urb = usb_alloc_urb(1, GFP_KERNEL);
- if (!u->urb)
- goto out_of_memory;
- u->urb->transfer_buffer = subs->syncbuf + i * 4;
- u->urb->transfer_dma = subs->sync_dma + i * 4;
- u->urb->transfer_buffer_length = 4;
- u->urb->pipe = subs->syncpipe;
- u->urb->transfer_flags = URB_ISO_ASAP |
- URB_NO_TRANSFER_DMA_MAP;
- u->urb->number_of_packets = 1;
- u->urb->interval = 1 << subs->syncinterval;
- u->urb->context = u;
- u->urb->complete = snd_complete_sync_urb;
- }
- }
- return 0;
-
-out_of_memory:
- release_substream_urbs(subs, 0);
- return -ENOMEM;
-}
-
-
-/*
- * find a matching audio format
- */
-static struct audioformat *find_format(struct snd_usb_substream *subs, unsigned int format,
- unsigned int rate, unsigned int channels)
-{
- struct list_head *p;
- struct audioformat *found = NULL;
- int cur_attr = 0, attr;
-
- list_for_each(p, &subs->fmt_list) {
- struct audioformat *fp;
- fp = list_entry(p, struct audioformat, list);
- if (fp->format != format || fp->channels != channels)
- continue;
- if (rate < fp->rate_min || rate > fp->rate_max)
- continue;
- if (! (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)) {
- unsigned int i;
- for (i = 0; i < fp->nr_rates; i++)
- if (fp->rate_table[i] == rate)
- break;
- if (i >= fp->nr_rates)
- continue;
- }
- attr = fp->ep_attr & USB_ENDPOINT_SYNCTYPE;
- if (! found) {
- found = fp;
- cur_attr = attr;
- continue;
- }
- /* avoid async out and adaptive in if the other method
- * supports the same format.
- * this is a workaround for the case like
- * M-audio audiophile USB.
- */
- if (attr != cur_attr) {
- if ((attr == USB_ENDPOINT_SYNC_ASYNC &&
- subs->direction == SNDRV_PCM_STREAM_PLAYBACK) ||
- (attr == USB_ENDPOINT_SYNC_ADAPTIVE &&
- subs->direction == SNDRV_PCM_STREAM_CAPTURE))
- continue;
- if ((cur_attr == USB_ENDPOINT_SYNC_ASYNC &&
- subs->direction == SNDRV_PCM_STREAM_PLAYBACK) ||
- (cur_attr == USB_ENDPOINT_SYNC_ADAPTIVE &&
- subs->direction == SNDRV_PCM_STREAM_CAPTURE)) {
- found = fp;
- cur_attr = attr;
- continue;
- }
- }
- /* find the format with the largest max. packet size */
- if (fp->maxpacksize > found->maxpacksize) {
- found = fp;
- cur_attr = attr;
- }
- }
- return found;
-}
-
-
-/*
- * initialize the picth control and sample rate
- */
-static int init_usb_pitch(struct usb_device *dev, int iface,
- struct usb_host_interface *alts,
- struct audioformat *fmt)
-{
- unsigned int ep;
- unsigned char data[1];
- int err;
-
- ep = get_endpoint(alts, 0)->bEndpointAddress;
- /* if endpoint has pitch control, enable it */
- if (fmt->attributes & UAC_EP_CS_ATTR_PITCH_CONTROL) {
- data[0] = 1;
- if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR,
- USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
- UAC_EP_CS_ATTR_PITCH_CONTROL << 8, ep, data, 1, 1000)) < 0) {
- snd_printk(KERN_ERR "%d:%d:%d: cannot set enable PITCH\n",
- dev->devnum, iface, ep);
- return err;
- }
- }
- return 0;
-}
-
-static int init_usb_sample_rate(struct usb_device *dev, int iface,
- struct usb_host_interface *alts,
- struct audioformat *fmt, int rate)
-{
- unsigned int ep;
- unsigned char data[3];
- int err;
-
- ep = get_endpoint(alts, 0)->bEndpointAddress;
- /* if endpoint has sampling rate control, set it */
- if (fmt->attributes & UAC_EP_CS_ATTR_SAMPLE_RATE) {
- int crate;
- data[0] = rate;
- data[1] = rate >> 8;
- data[2] = rate >> 16;
- if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR,
- USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
- UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep, data, 3, 1000)) < 0) {
- snd_printk(KERN_ERR "%d:%d:%d: cannot set freq %d to ep %#x\n",
- dev->devnum, iface, fmt->altsetting, rate, ep);
- return err;
- }
- if ((err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC_GET_CUR,
- USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_IN,
- UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep, data, 3, 1000)) < 0) {
- snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq at ep %#x\n",
- dev->devnum, iface, fmt->altsetting, ep);
- return 0; /* some devices don't support reading */
- }
- crate = data[0] | (data[1] << 8) | (data[2] << 16);
- if (crate != rate) {
- snd_printd(KERN_WARNING "current rate %d is different from the runtime rate %d\n", crate, rate);
- // runtime->rate = crate;
- }
- }
- return 0;
-}
-
-/*
- * For E-Mu 0404USB/0202USB/TrackerPre sample rate should be set for device,
- * not for interface.
- */
-static void set_format_emu_quirk(struct snd_usb_substream *subs,
- struct audioformat *fmt)
-{
- unsigned char emu_samplerate_id = 0;
-
- /* When capture is active
- * sample rate shouldn't be changed
- * by playback substream
- */
- if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) {
- if (subs->stream->substream[SNDRV_PCM_STREAM_CAPTURE].interface != -1)
- return;
- }
-
- switch (fmt->rate_min) {
- case 48000:
- emu_samplerate_id = EMU_QUIRK_SR_48000HZ;
- break;
- case 88200:
- emu_samplerate_id = EMU_QUIRK_SR_88200HZ;
- break;
- case 96000:
- emu_samplerate_id = EMU_QUIRK_SR_96000HZ;
- break;
- case 176400:
- emu_samplerate_id = EMU_QUIRK_SR_176400HZ;
- break;
- case 192000:
- emu_samplerate_id = EMU_QUIRK_SR_192000HZ;
- break;
- default:
- emu_samplerate_id = EMU_QUIRK_SR_44100HZ;
- break;
- }
- snd_emuusb_set_samplerate(subs->stream->chip, emu_samplerate_id);
-}
-
-/*
- * find a matching format and set up the interface
- */
-static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt)
-{
- struct usb_device *dev = subs->dev;
- struct usb_host_interface *alts;
- struct usb_interface_descriptor *altsd;
- struct usb_interface *iface;
- unsigned int ep, attr;
- int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK;
- int err;
-
- iface = usb_ifnum_to_if(dev, fmt->iface);
- if (WARN_ON(!iface))
- return -EINVAL;
- alts = &iface->altsetting[fmt->altset_idx];
- altsd = get_iface_desc(alts);
- if (WARN_ON(altsd->bAlternateSetting != fmt->altsetting))
- return -EINVAL;
-
- if (fmt == subs->cur_audiofmt)
- return 0;
-
- /* close the old interface */
- if (subs->interface >= 0 && subs->interface != fmt->iface) {
- if (usb_set_interface(subs->dev, subs->interface, 0) < 0) {
- snd_printk(KERN_ERR "%d:%d:%d: return to setting 0 failed\n",
- dev->devnum, fmt->iface, fmt->altsetting);
- return -EIO;
- }
- subs->interface = -1;
- subs->format = 0;
- }
-
- /* set interface */
- if (subs->interface != fmt->iface || subs->format != fmt->altset_idx) {
- if (usb_set_interface(dev, fmt->iface, fmt->altsetting) < 0) {
- snd_printk(KERN_ERR "%d:%d:%d: usb_set_interface failed\n",
- dev->devnum, fmt->iface, fmt->altsetting);
- return -EIO;
- }
- snd_printdd(KERN_INFO "setting usb interface %d:%d\n", fmt->iface, fmt->altsetting);
- subs->interface = fmt->iface;
- subs->format = fmt->altset_idx;
- }
-
- /* create a data pipe */
- ep = fmt->endpoint & USB_ENDPOINT_NUMBER_MASK;
- if (is_playback)
- subs->datapipe = usb_sndisocpipe(dev, ep);
- else
- subs->datapipe = usb_rcvisocpipe(dev, ep);
- subs->datainterval = fmt->datainterval;
- subs->syncpipe = subs->syncinterval = 0;
- subs->maxpacksize = fmt->maxpacksize;
- subs->fill_max = 0;
-
- /* we need a sync pipe in async OUT or adaptive IN mode */
- /* check the number of EP, since some devices have broken
- * descriptors which fool us. if it has only one EP,
- * assume it as adaptive-out or sync-in.
- */
- attr = fmt->ep_attr & USB_ENDPOINT_SYNCTYPE;
- if (((is_playback && attr == USB_ENDPOINT_SYNC_ASYNC) ||
- (! is_playback && attr == USB_ENDPOINT_SYNC_ADAPTIVE)) &&
- altsd->bNumEndpoints >= 2) {
- /* check sync-pipe endpoint */
- /* ... and check descriptor size before accessing bSynchAddress
- because there is a version of the SB Audigy 2 NX firmware lacking
- the audio fields in the endpoint descriptors */
- if ((get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != 0x01 ||
- (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE &&
- get_endpoint(alts, 1)->bSynchAddress != 0)) {
- snd_printk(KERN_ERR "%d:%d:%d : invalid synch pipe\n",
- dev->devnum, fmt->iface, fmt->altsetting);
- return -EINVAL;
- }
- ep = get_endpoint(alts, 1)->bEndpointAddress;
- if (get_endpoint(alts, 0)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE &&
- (( is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress | USB_DIR_IN)) ||
- (!is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress & ~USB_DIR_IN)))) {
- snd_printk(KERN_ERR "%d:%d:%d : invalid synch pipe\n",
- dev->devnum, fmt->iface, fmt->altsetting);
- return -EINVAL;
- }
- ep &= USB_ENDPOINT_NUMBER_MASK;
- if (is_playback)
- subs->syncpipe = usb_rcvisocpipe(dev, ep);
- else
- subs->syncpipe = usb_sndisocpipe(dev, ep);
- if (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE &&
- get_endpoint(alts, 1)->bRefresh >= 1 &&
- get_endpoint(alts, 1)->bRefresh <= 9)
- subs->syncinterval = get_endpoint(alts, 1)->bRefresh;
- else if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL)
- subs->syncinterval = 1;
- else if (get_endpoint(alts, 1)->bInterval >= 1 &&
- get_endpoint(alts, 1)->bInterval <= 16)
- subs->syncinterval = get_endpoint(alts, 1)->bInterval - 1;
- else
- subs->syncinterval = 3;
- }
-
- /* always fill max packet size */
- if (fmt->attributes & UAC_EP_CS_ATTR_FILL_MAX)
- subs->fill_max = 1;
-
- if ((err = init_usb_pitch(dev, subs->interface, alts, fmt)) < 0)
- return err;
-
- subs->cur_audiofmt = fmt;
-
- switch (subs->stream->chip->usb_id) {
- case USB_ID(0x041e, 0x3f02): /* E-Mu 0202 USB */
- case USB_ID(0x041e, 0x3f04): /* E-Mu 0404 USB */
- case USB_ID(0x041e, 0x3f0a): /* E-Mu Tracker Pre */
- set_format_emu_quirk(subs, fmt);
- break;
- }
-
-#if 0
- printk(KERN_DEBUG
- "setting done: format = %d, rate = %d..%d, channels = %d\n",
- fmt->format, fmt->rate_min, fmt->rate_max, fmt->channels);
- printk(KERN_DEBUG
- " datapipe = 0x%0x, syncpipe = 0x%0x\n",
- subs->datapipe, subs->syncpipe);
-#endif
-
- return 0;
-}
-
-/*
- * hw_params callback
- *
- * allocate a buffer and set the given audio format.
- *
- * so far we use a physically linear buffer although packetize transfer
- * doesn't need a continuous area.
- * if sg buffer is supported on the later version of alsa, we'll follow
- * that.
- */
-static int snd_usb_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *hw_params)
-{
- struct snd_usb_substream *subs = substream->runtime->private_data;
- struct audioformat *fmt;
- unsigned int channels, rate, format;
- int ret, changed;
-
- ret = snd_pcm_lib_alloc_vmalloc_buffer(substream,
- params_buffer_bytes(hw_params));
- if (ret < 0)
- return ret;
-
- format = params_format(hw_params);
- rate = params_rate(hw_params);
- channels = params_channels(hw_params);
- fmt = find_format(subs, format, rate, channels);
- if (!fmt) {
- snd_printd(KERN_DEBUG "cannot set format: format = %#x, rate = %d, channels = %d\n",
- format, rate, channels);
- return -EINVAL;
- }
-
- changed = subs->cur_audiofmt != fmt ||
- subs->period_bytes != params_period_bytes(hw_params) ||
- subs->cur_rate != rate;
- if ((ret = set_format(subs, fmt)) < 0)
- return ret;
-
- if (subs->cur_rate != rate) {
- struct usb_host_interface *alts;
- struct usb_interface *iface;
- iface = usb_ifnum_to_if(subs->dev, fmt->iface);
- alts = &iface->altsetting[fmt->altset_idx];
- ret = init_usb_sample_rate(subs->dev, subs->interface, alts, fmt, rate);
- if (ret < 0)
- return ret;
- subs->cur_rate = rate;
- }
-
- if (changed) {
- /* format changed */
- release_substream_urbs(subs, 0);
- /* influenced: period_bytes, channels, rate, format, */
- ret = init_substream_urbs(subs, params_period_bytes(hw_params),
- params_rate(hw_params),
- snd_pcm_format_physical_width(params_format(hw_params)) * params_channels(hw_params));
- }
-
- return ret;
-}
-
-/*
- * hw_free callback
- *
- * reset the audio format and release the buffer
- */
-static int snd_usb_hw_free(struct snd_pcm_substream *substream)
-{
- struct snd_usb_substream *subs = substream->runtime->private_data;
-
- subs->cur_audiofmt = NULL;
- subs->cur_rate = 0;
- subs->period_bytes = 0;
- if (!subs->stream->chip->shutdown)
- release_substream_urbs(subs, 0);
- return snd_pcm_lib_free_vmalloc_buffer(substream);
-}
-
-/*
- * prepare callback
- *
- * only a few subtle things...
- */
-static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct snd_usb_substream *subs = runtime->private_data;
-
- if (! subs->cur_audiofmt) {
- snd_printk(KERN_ERR "usbaudio: no format is specified!\n");
- return -ENXIO;
- }
-
- /* some unit conversions in runtime */
- subs->maxframesize = bytes_to_frames(runtime, subs->maxpacksize);
- subs->curframesize = bytes_to_frames(runtime, subs->curpacksize);
-
- /* reset the pointer */
- subs->hwptr_done = 0;
- subs->transfer_done = 0;
- subs->phase = 0;
- runtime->delay = 0;
-
- /* clear urbs (to be sure) */
- deactivate_urbs(subs, 0, 1);
- wait_clear_urbs(subs);
-
- /* for playback, submit the URBs now; otherwise, the first hwptr_done
- * updates for all URBs would happen at the same time when starting */
- if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) {
- subs->ops.prepare = prepare_nodata_playback_urb;
- return start_urbs(subs, runtime);
- } else
- return 0;
-}
-
-static struct snd_pcm_hardware snd_usb_hardware =
-{
- .info = SNDRV_PCM_INFO_MMAP |
- SNDRV_PCM_INFO_MMAP_VALID |
- SNDRV_PCM_INFO_BATCH |
- SNDRV_PCM_INFO_INTERLEAVED |
- SNDRV_PCM_INFO_BLOCK_TRANSFER |
- SNDRV_PCM_INFO_PAUSE,
- .buffer_bytes_max = 1024 * 1024,
- .period_bytes_min = 64,
- .period_bytes_max = 512 * 1024,
- .periods_min = 2,
- .periods_max = 1024,
-};
-
-/*
- * h/w constraints
- */
-
-#ifdef HW_CONST_DEBUG
-#define hwc_debug(fmt, args...) printk(KERN_DEBUG fmt, ##args)
-#else
-#define hwc_debug(fmt, args...) /**/
-#endif
-
-static int hw_check_valid_format(struct snd_usb_substream *subs,
- struct snd_pcm_hw_params *params,
- struct audioformat *fp)
-{
- struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
- struct snd_interval *ct = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
- struct snd_mask *fmts = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
- struct snd_interval *pt = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME);
- unsigned int ptime;
-
- /* check the format */
- if (!snd_mask_test(fmts, fp->format)) {
- hwc_debug(" > check: no supported format %d\n", fp->format);
- return 0;
- }
- /* check the channels */
- if (fp->channels < ct->min || fp->channels > ct->max) {
- hwc_debug(" > check: no valid channels %d (%d/%d)\n", fp->channels, ct->min, ct->max);
- return 0;
- }
- /* check the rate is within the range */
- if (fp->rate_min > it->max || (fp->rate_min == it->max && it->openmax)) {
- hwc_debug(" > check: rate_min %d > max %d\n", fp->rate_min, it->max);
- return 0;
- }
- if (fp->rate_max < it->min || (fp->rate_max == it->min && it->openmin)) {
- hwc_debug(" > check: rate_max %d < min %d\n", fp->rate_max, it->min);
- return 0;
- }
- /* check whether the period time is >= the data packet interval */
- if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH) {
- ptime = 125 * (1 << fp->datainterval);
- if (ptime > pt->max || (ptime == pt->max && pt->openmax)) {
- hwc_debug(" > check: ptime %u > max %u\n", ptime, pt->max);
- return 0;
- }
- }
- return 1;
-}
-
-static int hw_rule_rate(struct snd_pcm_hw_params *params,
- struct snd_pcm_hw_rule *rule)
-{
- struct snd_usb_substream *subs = rule->private;
- struct list_head *p;
- struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
- unsigned int rmin, rmax;
- int changed;
-
- hwc_debug("hw_rule_rate: (%d,%d)\n", it->min, it->max);
- changed = 0;
- rmin = rmax = 0;
- list_for_each(p, &subs->fmt_list) {
- struct audioformat *fp;
- fp = list_entry(p, struct audioformat, list);
- if (!hw_check_valid_format(subs, params, fp))
- continue;
- if (changed++) {
- if (rmin > fp->rate_min)
- rmin = fp->rate_min;
- if (rmax < fp->rate_max)
- rmax = fp->rate_max;
- } else {
- rmin = fp->rate_min;
- rmax = fp->rate_max;
- }
- }
-
- if (!changed) {
- hwc_debug(" --> get empty\n");
- it->empty = 1;
- return -EINVAL;
- }
-
- changed = 0;
- if (it->min < rmin) {
- it->min = rmin;
- it->openmin = 0;
- changed = 1;
- }
- if (it->max > rmax) {
- it->max = rmax;
- it->openmax = 0;
- changed = 1;
- }
- if (snd_interval_checkempty(it)) {
- it->empty = 1;
- return -EINVAL;
- }
- hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed);
- return changed;
-}
-
-
-static int hw_rule_channels(struct snd_pcm_hw_params *params,
- struct snd_pcm_hw_rule *rule)
-{
- struct snd_usb_substream *subs = rule->private;
- struct list_head *p;
- struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
- unsigned int rmin, rmax;
- int changed;
-
- hwc_debug("hw_rule_channels: (%d,%d)\n", it->min, it->max);
- changed = 0;
- rmin = rmax = 0;
- list_for_each(p, &subs->fmt_list) {
- struct audioformat *fp;
- fp = list_entry(p, struct audioformat, list);
- if (!hw_check_valid_format(subs, params, fp))
- continue;
- if (changed++) {
- if (rmin > fp->channels)
- rmin = fp->channels;
- if (rmax < fp->channels)
- rmax = fp->channels;
- } else {
- rmin = fp->channels;
- rmax = fp->channels;
- }
- }
-
- if (!changed) {
- hwc_debug(" --> get empty\n");
- it->empty = 1;
- return -EINVAL;
- }
-
- changed = 0;
- if (it->min < rmin) {
- it->min = rmin;
- it->openmin = 0;
- changed = 1;
- }
- if (it->max > rmax) {
- it->max = rmax;
- it->openmax = 0;
- changed = 1;
- }
- if (snd_interval_checkempty(it)) {
- it->empty = 1;
- return -EINVAL;
- }
- hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed);
- return changed;
-}
-
-static int hw_rule_format(struct snd_pcm_hw_params *params,
- struct snd_pcm_hw_rule *rule)
-{
- struct snd_usb_substream *subs = rule->private;
- struct list_head *p;
- struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
- u64 fbits;
- u32 oldbits[2];
- int changed;
-
- hwc_debug("hw_rule_format: %x:%x\n", fmt->bits[0], fmt->bits[1]);
- fbits = 0;
- list_for_each(p, &subs->fmt_list) {
- struct audioformat *fp;
- fp = list_entry(p, struct audioformat, list);
- if (!hw_check_valid_format(subs, params, fp))
- continue;
- fbits |= (1ULL << fp->format);
- }
-
- oldbits[0] = fmt->bits[0];
- oldbits[1] = fmt->bits[1];
- fmt->bits[0] &= (u32)fbits;
- fmt->bits[1] &= (u32)(fbits >> 32);
- if (!fmt->bits[0] && !fmt->bits[1]) {
- hwc_debug(" --> get empty\n");
- return -EINVAL;
- }
- changed = (oldbits[0] != fmt->bits[0] || oldbits[1] != fmt->bits[1]);
- hwc_debug(" --> %x:%x (changed = %d)\n", fmt->bits[0], fmt->bits[1], changed);
- return changed;
-}
-
-static int hw_rule_period_time(struct snd_pcm_hw_params *params,
- struct snd_pcm_hw_rule *rule)
-{
- struct snd_usb_substream *subs = rule->private;
- struct audioformat *fp;
- struct snd_interval *it;
- unsigned char min_datainterval;
- unsigned int pmin;
- int changed;
-
- it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME);
- hwc_debug("hw_rule_period_time: (%u,%u)\n", it->min, it->max);
- min_datainterval = 0xff;
- list_for_each_entry(fp, &subs->fmt_list, list) {
- if (!hw_check_valid_format(subs, params, fp))
- continue;
- min_datainterval = min(min_datainterval, fp->datainterval);
- }
- if (min_datainterval == 0xff) {
- hwc_debug(" --> get emtpy\n");
- it->empty = 1;
- return -EINVAL;
- }
- pmin = 125 * (1 << min_datainterval);
- changed = 0;
- if (it->min < pmin) {
- it->min = pmin;
- it->openmin = 0;
- changed = 1;
- }
- if (snd_interval_checkempty(it)) {
- it->empty = 1;
- return -EINVAL;
- }
- hwc_debug(" --> (%u,%u) (changed = %d)\n", it->min, it->max, changed);
- return changed;
-}
-
-/*
- * If the device supports unusual bit rates, does the request meet these?
- */
-static int snd_usb_pcm_check_knot(struct snd_pcm_runtime *runtime,
- struct snd_usb_substream *subs)
-{
- struct audioformat *fp;
- int count = 0, needs_knot = 0;
- int err;
-
- list_for_each_entry(fp, &subs->fmt_list, list) {
- if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)
- return 0;
- count += fp->nr_rates;
- if (fp->rates & SNDRV_PCM_RATE_KNOT)
- needs_knot = 1;
- }
- if (!needs_knot)
- return 0;
-
- subs->rate_list.count = count;
- subs->rate_list.list = kmalloc(sizeof(int) * count, GFP_KERNEL);
- subs->rate_list.mask = 0;
- count = 0;
- list_for_each_entry(fp, &subs->fmt_list, list) {
- int i;
- for (i = 0; i < fp->nr_rates; i++)
- subs->rate_list.list[count++] = fp->rate_table[i];
- }
- err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
- &subs->rate_list);
- if (err < 0)
- return err;
-
- return 0;
-}
-
-
-/*
- * set up the runtime hardware information.
- */
-
-static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substream *subs)
-{
- struct list_head *p;
- unsigned int pt, ptmin;
- int param_period_time_if_needed;
- int err;
-
- runtime->hw.formats = subs->formats;
-
- runtime->hw.rate_min = 0x7fffffff;
- runtime->hw.rate_max = 0;
- runtime->hw.channels_min = 256;
- runtime->hw.channels_max = 0;
- runtime->hw.rates = 0;
- ptmin = UINT_MAX;
- /* check min/max rates and channels */
- list_for_each(p, &subs->fmt_list) {
- struct audioformat *fp;
- fp = list_entry(p, struct audioformat, list);
- runtime->hw.rates |= fp->rates;
- if (runtime->hw.rate_min > fp->rate_min)
- runtime->hw.rate_min = fp->rate_min;
- if (runtime->hw.rate_max < fp->rate_max)
- runtime->hw.rate_max = fp->rate_max;
- if (runtime->hw.channels_min > fp->channels)
- runtime->hw.channels_min = fp->channels;
- if (runtime->hw.channels_max < fp->channels)
- runtime->hw.channels_max = fp->channels;
- if (fp->fmt_type == UAC_FORMAT_TYPE_II && fp->frame_size > 0) {
- /* FIXME: there might be more than one audio formats... */
- runtime->hw.period_bytes_min = runtime->hw.period_bytes_max =
- fp->frame_size;
- }
- pt = 125 * (1 << fp->datainterval);
- ptmin = min(ptmin, pt);
- }
-
- param_period_time_if_needed = SNDRV_PCM_HW_PARAM_PERIOD_TIME;
- if (snd_usb_get_speed(subs->dev) != USB_SPEED_HIGH)
- /* full speed devices have fixed data packet interval */
- ptmin = 1000;
- if (ptmin == 1000)
- /* if period time doesn't go below 1 ms, no rules needed */
- param_period_time_if_needed = -1;
- snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME,
- ptmin, UINT_MAX);
-
- if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
- hw_rule_rate, subs,
- SNDRV_PCM_HW_PARAM_FORMAT,
- SNDRV_PCM_HW_PARAM_CHANNELS,
- param_period_time_if_needed,
- -1)) < 0)
- return err;
- if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
- hw_rule_channels, subs,
- SNDRV_PCM_HW_PARAM_FORMAT,
- SNDRV_PCM_HW_PARAM_RATE,
- param_period_time_if_needed,
- -1)) < 0)
- return err;
- if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT,
- hw_rule_format, subs,
- SNDRV_PCM_HW_PARAM_RATE,
- SNDRV_PCM_HW_PARAM_CHANNELS,
- param_period_time_if_needed,
- -1)) < 0)
- return err;
- if (param_period_time_if_needed >= 0) {
- err = snd_pcm_hw_rule_add(runtime, 0,
- SNDRV_PCM_HW_PARAM_PERIOD_TIME,
- hw_rule_period_time, subs,
- SNDRV_PCM_HW_PARAM_FORMAT,
- SNDRV_PCM_HW_PARAM_CHANNELS,
- SNDRV_PCM_HW_PARAM_RATE,
- -1);
- if (err < 0)
- return err;
- }
- if ((err = snd_usb_pcm_check_knot(runtime, subs)) < 0)
- return err;
- return 0;
-}
-
-static int snd_usb_pcm_open(struct snd_pcm_substream *substream, int direction)
-{
- struct snd_usb_stream *as = snd_pcm_substream_chip(substream);
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct snd_usb_substream *subs = &as->substream[direction];
-
- subs->interface = -1;
- subs->format = 0;
- runtime->hw = snd_usb_hardware;
- runtime->private_data = subs;
- subs->pcm_substream = substream;
- return setup_hw_info(runtime, subs);
-}
-
-static int snd_usb_pcm_close(struct snd_pcm_substream *substream, int direction)
-{
- struct snd_usb_stream *as = snd_pcm_substream_chip(substream);
- struct snd_usb_substream *subs = &as->substream[direction];
-
- if (!as->chip->shutdown && subs->interface >= 0) {
- usb_set_interface(subs->dev, subs->interface, 0);
- subs->interface = -1;
- }
- subs->pcm_substream = NULL;
- return 0;
-}
-
-static int snd_usb_playback_open(struct snd_pcm_substream *substream)
-{
- return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_PLAYBACK);
-}
-
-static int snd_usb_playback_close(struct snd_pcm_substream *substream)
-{
- return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_PLAYBACK);
-}
-
-static int snd_usb_capture_open(struct snd_pcm_substream *substream)
-{
- return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_CAPTURE);
-}
-
-static int snd_usb_capture_close(struct snd_pcm_substream *substream)
-{
- return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_CAPTURE);
-}
-
-static struct snd_pcm_ops snd_usb_playback_ops = {
- .open = snd_usb_playback_open,
- .close = snd_usb_playback_close,
- .ioctl = snd_pcm_lib_ioctl,
- .hw_params = snd_usb_hw_params,
- .hw_free = snd_usb_hw_free,
- .prepare = snd_usb_pcm_prepare,
- .trigger = snd_usb_pcm_playback_trigger,
- .pointer = snd_usb_pcm_pointer,
- .page = snd_pcm_lib_get_vmalloc_page,
- .mmap = snd_pcm_lib_mmap_vmalloc,
-};
-
-static struct snd_pcm_ops snd_usb_capture_ops = {
- .open = snd_usb_capture_open,
- .close = snd_usb_capture_close,
- .ioctl = snd_pcm_lib_ioctl,
- .hw_params = snd_usb_hw_params,
- .hw_free = snd_usb_hw_free,
- .prepare = snd_usb_pcm_prepare,
- .trigger = snd_usb_pcm_capture_trigger,
- .pointer = snd_usb_pcm_pointer,
- .page = snd_pcm_lib_get_vmalloc_page,
- .mmap = snd_pcm_lib_mmap_vmalloc,
-};
-
-
-
-/*
- * helper functions
- */
-
-/*
- * combine bytes and get an integer value
- */
-unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size)
-{
- switch (size) {
- case 1: return *bytes;
- case 2: return combine_word(bytes);
- case 3: return combine_triple(bytes);
- case 4: return combine_quad(bytes);
- default: return 0;
- }
-}
-
-/*
- * parse descriptor buffer and return the pointer starting the given
- * descriptor type.
- */
-void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype)
-{
- u8 *p, *end, *next;
-
- p = descstart;
- end = p + desclen;
- for (; p < end;) {
- if (p[0] < 2)
- return NULL;
- next = p + p[0];
- if (next > end)
- return NULL;
- if (p[1] == dtype && (!after || (void *)p > after)) {
- return p;
- }
- p = next;
- }
- return NULL;
-}
-
-/*
- * find a class-specified interface descriptor with the given subtype.
- */
-void *snd_usb_find_csint_desc(void *buffer, int buflen, void *after, u8 dsubtype)
-{
- unsigned char *p = after;
-
- while ((p = snd_usb_find_desc(buffer, buflen, p,
- USB_DT_CS_INTERFACE)) != NULL) {
- if (p[0] >= 3 && p[2] == dsubtype)
- return p;
- }
- return NULL;
-}
-
-/*
- * Wrapper for usb_control_msg().
- * Allocates a temp buffer to prevent dmaing from/to the stack.
- */
-int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request,
- __u8 requesttype, __u16 value, __u16 index, void *data,
- __u16 size, int timeout)
-{
- int err;
- void *buf = NULL;
-
- if (size > 0) {
- buf = kmemdup(data, size, GFP_KERNEL);
- if (!buf)
- return -ENOMEM;
- }
- err = usb_control_msg(dev, pipe, request, requesttype,
- value, index, buf, size, timeout);
- if (size > 0) {
- memcpy(data, buf, size);
- kfree(buf);
- }
- return err;
-}
-
-
-/*
- * entry point for linux usb interface
- */
-
-static int usb_audio_probe(struct usb_interface *intf,
- const struct usb_device_id *id);
-static void usb_audio_disconnect(struct usb_interface *intf);
-
-#ifdef CONFIG_PM
-static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message);
-static int usb_audio_resume(struct usb_interface *intf);
-#else
-#define usb_audio_suspend NULL
-#define usb_audio_resume NULL
-#endif
-
-static struct usb_device_id usb_audio_ids [] = {
-#include "usbquirks.h"
- { .match_flags = (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS),
- .bInterfaceClass = USB_CLASS_AUDIO,
- .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL },
- { } /* Terminating entry */
-};
-
-MODULE_DEVICE_TABLE (usb, usb_audio_ids);
-
-static struct usb_driver usb_audio_driver = {
- .name = "snd-usb-audio",
- .probe = usb_audio_probe,
- .disconnect = usb_audio_disconnect,
- .suspend = usb_audio_suspend,
- .resume = usb_audio_resume,
- .id_table = usb_audio_ids,
-};
-
-
-#if defined(CONFIG_PROC_FS) && defined(CONFIG_SND_VERBOSE_PROCFS)
-
-/*
- * proc interface for list the supported pcm formats
- */
-static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct snd_info_buffer *buffer)
-{
- struct list_head *p;
- static char *sync_types[4] = {
- "NONE", "ASYNC", "ADAPTIVE", "SYNC"
- };
-
- list_for_each(p, &subs->fmt_list) {
- struct audioformat *fp;
- fp = list_entry(p, struct audioformat, list);
- snd_iprintf(buffer, " Interface %d\n", fp->iface);
- snd_iprintf(buffer, " Altset %d\n", fp->altsetting);
- snd_iprintf(buffer, " Format: %s\n",
- snd_pcm_format_name(fp->format));
- snd_iprintf(buffer, " Channels: %d\n", fp->channels);
- snd_iprintf(buffer, " Endpoint: %d %s (%s)\n",
- fp->endpoint & USB_ENDPOINT_NUMBER_MASK,
- fp->endpoint & USB_DIR_IN ? "IN" : "OUT",
- sync_types[(fp->ep_attr & USB_ENDPOINT_SYNCTYPE) >> 2]);
- if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) {
- snd_iprintf(buffer, " Rates: %d - %d (continuous)\n",
- fp->rate_min, fp->rate_max);
- } else {
- unsigned int i;
- snd_iprintf(buffer, " Rates: ");
- for (i = 0; i < fp->nr_rates; i++) {
- if (i > 0)
- snd_iprintf(buffer, ", ");
- snd_iprintf(buffer, "%d", fp->rate_table[i]);
- }
- snd_iprintf(buffer, "\n");
- }
- if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH)
- snd_iprintf(buffer, " Data packet interval: %d us\n",
- 125 * (1 << fp->datainterval));
- // snd_iprintf(buffer, " Max Packet Size = %d\n", fp->maxpacksize);
- // snd_iprintf(buffer, " EP Attribute = %#x\n", fp->attributes);
- }
-}
-
-static void proc_dump_substream_status(struct snd_usb_substream *subs, struct snd_info_buffer *buffer)
-{
- if (subs->running) {
- unsigned int i;
- snd_iprintf(buffer, " Status: Running\n");
- snd_iprintf(buffer, " Interface = %d\n", subs->interface);
- snd_iprintf(buffer, " Altset = %d\n", subs->format);
- snd_iprintf(buffer, " URBs = %d [ ", subs->nurbs);
- for (i = 0; i < subs->nurbs; i++)
- snd_iprintf(buffer, "%d ", subs->dataurb[i].packets);
- snd_iprintf(buffer, "]\n");
- snd_iprintf(buffer, " Packet Size = %d\n", subs->curpacksize);
- snd_iprintf(buffer, " Momentary freq = %u Hz (%#x.%04x)\n",
- snd_usb_get_speed(subs->dev) == USB_SPEED_FULL
- ? get_full_speed_hz(subs->freqm)
- : get_high_speed_hz(subs->freqm),
- subs->freqm >> 16, subs->freqm & 0xffff);
- } else {
- snd_iprintf(buffer, " Status: Stop\n");
- }
-}
-
-static void proc_pcm_format_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
-{
- struct snd_usb_stream *stream = entry->private_data;
-
- snd_iprintf(buffer, "%s : %s\n", stream->chip->card->longname, stream->pcm->name);
-
- if (stream->substream[SNDRV_PCM_STREAM_PLAYBACK].num_formats) {
- snd_iprintf(buffer, "\nPlayback:\n");
- proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
- proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
- }
- if (stream->substream[SNDRV_PCM_STREAM_CAPTURE].num_formats) {
- snd_iprintf(buffer, "\nCapture:\n");
- proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
- proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
- }
-}
-
-static void proc_pcm_format_add(struct snd_usb_stream *stream)
-{
- struct snd_info_entry *entry;
- char name[32];
- struct snd_card *card = stream->chip->card;
-
- sprintf(name, "stream%d", stream->pcm_index);
- if (!snd_card_proc_new(card, name, &entry))
- snd_info_set_text_ops(entry, stream, proc_pcm_format_read);
-}
-
-#else
-
-static inline void proc_pcm_format_add(struct snd_usb_stream *stream)
-{
-}
-
-#endif
-
-/*
- * initialize the substream instance.
- */
-
-static void init_substream(struct snd_usb_stream *as, int stream, struct audioformat *fp)
-{
- struct snd_usb_substream *subs = &as->substream[stream];
-
- INIT_LIST_HEAD(&subs->fmt_list);
- spin_lock_init(&subs->lock);
-
- subs->stream = as;
- subs->direction = stream;
- subs->dev = as->chip->dev;
- subs->txfr_quirk = as->chip->txfr_quirk;
- if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL) {
- subs->ops = audio_urb_ops[stream];
- } else {
- subs->ops = audio_urb_ops_high_speed[stream];
- switch (as->chip->usb_id) {
- case USB_ID(0x041e, 0x3f02): /* E-Mu 0202 USB */
- case USB_ID(0x041e, 0x3f04): /* E-Mu 0404 USB */
- case USB_ID(0x041e, 0x3f0a): /* E-Mu Tracker Pre */
- subs->ops.retire_sync = retire_playback_sync_urb_hs_emu;
- break;
- }
- }
- snd_pcm_set_ops(as->pcm, stream,
- stream == SNDRV_PCM_STREAM_PLAYBACK ?
- &snd_usb_playback_ops : &snd_usb_capture_ops);
-
- list_add_tail(&fp->list, &subs->fmt_list);
- subs->formats |= 1ULL << fp->format;
- subs->endpoint = fp->endpoint;
- subs->num_formats++;
- subs->fmt_type = fp->fmt_type;
-}
-
-
-/*
- * free a substream
- */
-static void free_substream(struct snd_usb_substream *subs)
-{
- struct list_head *p, *n;
-
- if (!subs->num_formats)
- return; /* not initialized */
- list_for_each_safe(p, n, &subs->fmt_list) {
- struct audioformat *fp = list_entry(p, struct audioformat, list);
- kfree(fp->rate_table);
- kfree(fp);
- }
- kfree(subs->rate_list.list);
-}
-
-
-/*
- * free a usb stream instance
- */
-static void snd_usb_audio_stream_free(struct snd_usb_stream *stream)
-{
- free_substream(&stream->substream[0]);
- free_substream(&stream->substream[1]);
- list_del(&stream->list);
- kfree(stream);
-}
-
-static void snd_usb_audio_pcm_free(struct snd_pcm *pcm)
-{
- struct snd_usb_stream *stream = pcm->private_data;
- if (stream) {
- stream->pcm = NULL;
- snd_usb_audio_stream_free(stream);
- }
-}
-
-
-/*
- * add this endpoint to the chip instance.
- * if a stream with the same endpoint already exists, append to it.
- * if not, create a new pcm stream.
- */
-static int add_audio_endpoint(struct snd_usb_audio *chip, int stream, struct audioformat *fp)
-{
- struct list_head *p;
- struct snd_usb_stream *as;
- struct snd_usb_substream *subs;
- struct snd_pcm *pcm;
- int err;
-
- list_for_each(p, &chip->pcm_list) {
- as = list_entry(p, struct snd_usb_stream, list);
- if (as->fmt_type != fp->fmt_type)
- continue;
- subs = &as->substream[stream];
- if (!subs->endpoint)
- continue;
- if (subs->endpoint == fp->endpoint) {
- list_add_tail(&fp->list, &subs->fmt_list);
- subs->num_formats++;
- subs->formats |= 1ULL << fp->format;
- return 0;
- }
- }
- /* look for an empty stream */
- list_for_each(p, &chip->pcm_list) {
- as = list_entry(p, struct snd_usb_stream, list);
- if (as->fmt_type != fp->fmt_type)
- continue;
- subs = &as->substream[stream];
- if (subs->endpoint)
- continue;
- err = snd_pcm_new_stream(as->pcm, stream, 1);
- if (err < 0)
- return err;
- init_substream(as, stream, fp);
- return 0;
- }
-
- /* create a new pcm */
- as = kzalloc(sizeof(*as), GFP_KERNEL);
- if (!as)
- return -ENOMEM;
- as->pcm_index = chip->pcm_devs;
- as->chip = chip;
- as->fmt_type = fp->fmt_type;
- err = snd_pcm_new(chip->card, "USB Audio", chip->pcm_devs,
- stream == SNDRV_PCM_STREAM_PLAYBACK ? 1 : 0,
- stream == SNDRV_PCM_STREAM_PLAYBACK ? 0 : 1,
- &pcm);
- if (err < 0) {
- kfree(as);
- return err;
- }
- as->pcm = pcm;
- pcm->private_data = as;
- pcm->private_free = snd_usb_audio_pcm_free;
- pcm->info_flags = 0;
- if (chip->pcm_devs > 0)
- sprintf(pcm->name, "USB Audio #%d", chip->pcm_devs);
- else
- strcpy(pcm->name, "USB Audio");
-
- init_substream(as, stream, fp);
-
- list_add(&as->list, &chip->pcm_list);
- chip->pcm_devs++;
-
- proc_pcm_format_add(as);
-
- return 0;
-}
-
-
-/*
- * check if the device uses big-endian samples
- */
-static int is_big_endian_format(struct snd_usb_audio *chip, struct audioformat *fp)
-{
- switch (chip->usb_id) {
- case USB_ID(0x0763, 0x2001): /* M-Audio Quattro: captured data only */
- if (fp->endpoint & USB_DIR_IN)
- return 1;
- break;
- case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
- if (device_setup[chip->index] == 0x00 ||
- fp->altsetting==1 || fp->altsetting==2 || fp->altsetting==3)
- return 1;
- }
- return 0;
-}
-
-/*
- * parse the audio format type I descriptor
- * and returns the corresponding pcm format
- *
- * @dev: usb device
- * @fp: audioformat record
- * @format: the format tag (wFormatTag)
- * @fmt: the format type descriptor
- */
-static int parse_audio_format_i_type(struct snd_usb_audio *chip,
- struct audioformat *fp,
- int format, void *_fmt,
- int protocol)
-{
- int pcm_format, i;
- int sample_width, sample_bytes;
-
- switch (protocol) {
- case UAC_VERSION_1: {
- struct uac_format_type_i_discrete_descriptor *fmt = _fmt;
- sample_width = fmt->bBitResolution;
- sample_bytes = fmt->bSubframeSize;
- break;
- }
-
- case UAC_VERSION_2: {
- struct uac_format_type_i_ext_descriptor *fmt = _fmt;
- sample_width = fmt->bBitResolution;
- sample_bytes = fmt->bSubslotSize;
-
- /*
- * FIXME
- * USB audio class v2 devices specify a bitmap of possible
- * audio formats rather than one fix value. For now, we just
- * pick one of them and report that as the only possible
- * value for this setting.
- * The bit allocation map is in fact compatible to the
- * wFormatTag of the v1 AS streaming descriptors, which is why
- * we can simply map the matrix.
- */
-
- for (i = 0; i < 5; i++)
- if (format & (1UL << i)) {
- format = i + 1;
- break;
- }
-
- break;
- }
-
- default:
- return -EINVAL;
- }
-
- /* FIXME: correct endianess and sign? */
- pcm_format = -1;
-
- switch (format) {
- case UAC_FORMAT_TYPE_I_UNDEFINED: /* some devices don't define this correctly... */
- snd_printdd(KERN_INFO "%d:%u:%d : format type 0 is detected, processed as PCM\n",
- chip->dev->devnum, fp->iface, fp->altsetting);
- /* fall-through */
- case UAC_FORMAT_TYPE_I_PCM:
- if (sample_width > sample_bytes * 8) {
- snd_printk(KERN_INFO "%d:%u:%d : sample bitwidth %d in over sample bytes %d\n",
- chip->dev->devnum, fp->iface, fp->altsetting,
- sample_width, sample_bytes);
- }
- /* check the format byte size */
- switch (sample_bytes) {
- case 1:
- pcm_format = SNDRV_PCM_FORMAT_S8;
- break;
- case 2:
- if (is_big_endian_format(chip, fp))
- pcm_format = SNDRV_PCM_FORMAT_S16_BE; /* grrr, big endian!! */
- else
- pcm_format = SNDRV_PCM_FORMAT_S16_LE;
- break;
- case 3:
- if (is_big_endian_format(chip, fp))
- pcm_format = SNDRV_PCM_FORMAT_S24_3BE; /* grrr, big endian!! */
- else
- pcm_format = SNDRV_PCM_FORMAT_S24_3LE;
- break;
- case 4:
- pcm_format = SNDRV_PCM_FORMAT_S32_LE;
- break;
- default:
- snd_printk(KERN_INFO "%d:%u:%d : unsupported sample bitwidth %d in %d bytes\n",
- chip->dev->devnum, fp->iface, fp->altsetting,
- sample_width, sample_bytes);
- break;
- }
- break;
- case UAC_FORMAT_TYPE_I_PCM8:
- pcm_format = SNDRV_PCM_FORMAT_U8;
-
- /* Dallas DS4201 workaround: it advertises U8 format, but really
- supports S8. */
- if (chip->usb_id == USB_ID(0x04fa, 0x4201))
- pcm_format = SNDRV_PCM_FORMAT_S8;
- break;
- case UAC_FORMAT_TYPE_I_IEEE_FLOAT:
- pcm_format = SNDRV_PCM_FORMAT_FLOAT_LE;
- break;
- case UAC_FORMAT_TYPE_I_ALAW:
- pcm_format = SNDRV_PCM_FORMAT_A_LAW;
- break;
- case UAC_FORMAT_TYPE_I_MULAW:
- pcm_format = SNDRV_PCM_FORMAT_MU_LAW;
- break;
- default:
- snd_printk(KERN_INFO "%d:%u:%d : unsupported format type %d\n",
- chip->dev->devnum, fp->iface, fp->altsetting, format);
- break;
- }
- return pcm_format;
-}
-
-
-/*
- * parse the format descriptor and stores the possible sample rates
- * on the audioformat table (audio class v1).
- *
- * @dev: usb device
- * @fp: audioformat record
- * @fmt: the format descriptor
- * @offset: the start offset of descriptor pointing the rate type
- * (7 for type I and II, 8 for type II)
- */
-static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audioformat *fp,
- unsigned char *fmt, int offset)
-{
- int nr_rates = fmt[offset];
-
- if (fmt[0] < offset + 1 + 3 * (nr_rates ? nr_rates : 2)) {
- snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_FORMAT_TYPE desc\n",
- chip->dev->devnum, fp->iface, fp->altsetting);
- return -1;
- }
-
- if (nr_rates) {
- /*
- * build the rate table and bitmap flags
- */
- int r, idx;
-
- fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL);
- if (fp->rate_table == NULL) {
- snd_printk(KERN_ERR "cannot malloc\n");
- return -1;
- }
-
- fp->nr_rates = 0;
- fp->rate_min = fp->rate_max = 0;
- for (r = 0, idx = offset + 1; r < nr_rates; r++, idx += 3) {
- unsigned int rate = combine_triple(&fmt[idx]);
- if (!rate)
- continue;
- /* C-Media CM6501 mislabels its 96 kHz altsetting */
- if (rate == 48000 && nr_rates == 1 &&
- (chip->usb_id == USB_ID(0x0d8c, 0x0201) ||
- chip->usb_id == USB_ID(0x0d8c, 0x0102)) &&
- fp->altsetting == 5 && fp->maxpacksize == 392)
- rate = 96000;
- /* Creative VF0470 Live Cam reports 16 kHz instead of 8kHz */
- if (rate == 16000 && chip->usb_id == USB_ID(0x041e, 0x4068))
- rate = 8000;
- fp->rate_table[fp->nr_rates] = rate;
- if (!fp->rate_min || rate < fp->rate_min)
- fp->rate_min = rate;
- if (!fp->rate_max || rate > fp->rate_max)
- fp->rate_max = rate;
- fp->rates |= snd_pcm_rate_to_rate_bit(rate);
- fp->nr_rates++;
- }
- if (!fp->nr_rates) {
- hwc_debug("All rates were zero. Skipping format!\n");
- return -1;
- }
- } else {
- /* continuous rates */
- fp->rates = SNDRV_PCM_RATE_CONTINUOUS;
- fp->rate_min = combine_triple(&fmt[offset + 1]);
- fp->rate_max = combine_triple(&fmt[offset + 4]);
- }
- return 0;
-}
-
-/*
- * parse the format descriptor and stores the possible sample rates
- * on the audioformat table (audio class v2).
- */
-static int parse_audio_format_rates_v2(struct snd_usb_audio *chip,
- struct audioformat *fp,
- struct usb_host_interface *iface)
-{
- struct usb_device *dev = chip->dev;
- unsigned char tmp[2], *data;
- int i, nr_rates, data_size, ret = 0;
-
- /* get the number of sample rates first by only fetching 2 bytes */
- ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE,
- USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
- 0x0100, chip->clock_id << 8, tmp, sizeof(tmp), 1000);
-
- if (ret < 0) {
- snd_printk(KERN_ERR "unable to retrieve number of sample rates\n");
- goto err;
- }
-
- nr_rates = (tmp[1] << 8) | tmp[0];
- data_size = 2 + 12 * nr_rates;
- data = kzalloc(data_size, GFP_KERNEL);
- if (!data) {
- ret = -ENOMEM;
- goto err;
- }
-
- /* now get the full information */
- ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE,
- USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
- 0x0100, chip->clock_id << 8, data, data_size, 1000);
-
- if (ret < 0) {
- snd_printk(KERN_ERR "unable to retrieve sample rate range\n");
- ret = -EINVAL;
- goto err_free;
- }
-
- fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL);
- if (!fp->rate_table) {
- ret = -ENOMEM;
- goto err_free;
- }
-
- fp->nr_rates = 0;
- fp->rate_min = fp->rate_max = 0;
-
- for (i = 0; i < nr_rates; i++) {
- int rate = combine_quad(&data[2 + 12 * i]);
-
- fp->rate_table[fp->nr_rates] = rate;
- if (!fp->rate_min || rate < fp->rate_min)
- fp->rate_min = rate;
- if (!fp->rate_max || rate > fp->rate_max)
- fp->rate_max = rate;
- fp->rates |= snd_pcm_rate_to_rate_bit(rate);
- fp->nr_rates++;
- }
-
-err_free:
- kfree(data);
-err:
- return ret;
-}
-
-/*
- * parse the format type I and III descriptors
- */
-static int parse_audio_format_i(struct snd_usb_audio *chip,
- struct audioformat *fp,
- int format, void *_fmt,
- struct usb_host_interface *iface)
-{
- struct usb_interface_descriptor *altsd = get_iface_desc(iface);
- struct uac_format_type_i_discrete_descriptor *fmt = _fmt;
- int protocol = altsd->bInterfaceProtocol;
- int pcm_format, ret;
-
- if (fmt->bFormatType == UAC_FORMAT_TYPE_III) {
- /* FIXME: the format type is really IECxxx
- * but we give normal PCM format to get the existing
- * apps working...
- */
- switch (chip->usb_id) {
-
- case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
- if (device_setup[chip->index] == 0x00 &&
- fp->altsetting == 6)
- pcm_format = SNDRV_PCM_FORMAT_S16_BE;
- else
- pcm_format = SNDRV_PCM_FORMAT_S16_LE;
- break;
- default:
- pcm_format = SNDRV_PCM_FORMAT_S16_LE;
- }
- } else {
- pcm_format = parse_audio_format_i_type(chip, fp, format, fmt, protocol);
- if (pcm_format < 0)
- return -1;
- }
-
- fp->format = pcm_format;
-
- /* gather possible sample rates */
- /* audio class v1 reports possible sample rates as part of the
- * proprietary class specific descriptor.
- * audio class v2 uses class specific EP0 range requests for that.
- */
- switch (protocol) {
- case UAC_VERSION_1:
- fp->channels = fmt->bNrChannels;
- ret = parse_audio_format_rates_v1(chip, fp, _fmt, 7);
- break;
- case UAC_VERSION_2:
- /* fp->channels is already set in this case */
- ret = parse_audio_format_rates_v2(chip, fp, iface);
- break;
- }
-
- if (fp->channels < 1) {
- snd_printk(KERN_ERR "%d:%u:%d : invalid channels %d\n",
- chip->dev->devnum, fp->iface, fp->altsetting, fp->channels);
- return -1;
- }
-
- return ret;
-}
-
-/*
- * parse the format type II descriptor
- */
-static int parse_audio_format_ii(struct snd_usb_audio *chip,
- struct audioformat *fp,
- int format, void *_fmt,
- struct usb_host_interface *iface)
-{
- int brate, framesize, ret;
- struct usb_interface_descriptor *altsd = get_iface_desc(iface);
- int protocol = altsd->bInterfaceProtocol;
-
- switch (format) {
- case UAC_FORMAT_TYPE_II_AC3:
- /* FIXME: there is no AC3 format defined yet */
- // fp->format = SNDRV_PCM_FORMAT_AC3;
- fp->format = SNDRV_PCM_FORMAT_U8; /* temporarily hack to receive byte streams */
- break;
- case UAC_FORMAT_TYPE_II_MPEG:
- fp->format = SNDRV_PCM_FORMAT_MPEG;
- break;
- default:
- snd_printd(KERN_INFO "%d:%u:%d : unknown format tag %#x is detected. processed as MPEG.\n",
- chip->dev->devnum, fp->iface, fp->altsetting, format);
- fp->format = SNDRV_PCM_FORMAT_MPEG;
- break;
- }
-
- fp->channels = 1;
-
- switch (protocol) {
- case UAC_VERSION_1: {
- struct uac_format_type_ii_discrete_descriptor *fmt = _fmt;
- brate = le16_to_cpu(fmt->wMaxBitRate);
- framesize = le16_to_cpu(fmt->wSamplesPerFrame);
- snd_printd(KERN_INFO "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize);
- fp->frame_size = framesize;
- ret = parse_audio_format_rates_v1(chip, fp, _fmt, 8); /* fmt[8..] sample rates */
- break;
- }
- case UAC_VERSION_2: {
- struct uac_format_type_ii_ext_descriptor *fmt = _fmt;
- brate = le16_to_cpu(fmt->wMaxBitRate);
- framesize = le16_to_cpu(fmt->wSamplesPerFrame);
- snd_printd(KERN_INFO "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize);
- fp->frame_size = framesize;
- ret = parse_audio_format_rates_v2(chip, fp, iface);
- break;
- }
- }
-
- return ret;
-}
-
-static int parse_audio_format(struct snd_usb_audio *chip, struct audioformat *fp,
- int format, unsigned char *fmt, int stream,
- struct usb_host_interface *iface)
-{
- int err;
-
- switch (fmt[3]) {
- case UAC_FORMAT_TYPE_I:
- case UAC_FORMAT_TYPE_III:
- err = parse_audio_format_i(chip, fp, format, fmt, iface);
- break;
- case UAC_FORMAT_TYPE_II:
- err = parse_audio_format_ii(chip, fp, format, fmt, iface);
- break;
- default:
- snd_printd(KERN_INFO "%d:%u:%d : format type %d is not supported yet\n",
- chip->dev->devnum, fp->iface, fp->altsetting, fmt[3]);
- return -1;
- }
- fp->fmt_type = fmt[3];
- if (err < 0)
- return err;
-#if 1
- /* FIXME: temporary hack for extigy/audigy 2 nx/zs */
- /* extigy apparently supports sample rates other than 48k
- * but not in ordinary way. so we enable only 48k atm.
- */
- if (chip->usb_id == USB_ID(0x041e, 0x3000) ||
- chip->usb_id == USB_ID(0x041e, 0x3020) ||
- chip->usb_id == USB_ID(0x041e, 0x3061)) {
- if (fmt[3] == UAC_FORMAT_TYPE_I &&
- fp->rates != SNDRV_PCM_RATE_48000 &&
- fp->rates != SNDRV_PCM_RATE_96000)
- return -1;
- }
-#endif
- return 0;
-}
-
-static unsigned char parse_datainterval(struct snd_usb_audio *chip,
- struct usb_host_interface *alts)
-{
- if (snd_usb_get_speed(chip->dev) == USB_SPEED_HIGH &&
- get_endpoint(alts, 0)->bInterval >= 1 &&
- get_endpoint(alts, 0)->bInterval <= 4)
- return get_endpoint(alts, 0)->bInterval - 1;
- else
- return 0;
-}
-
-static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip,
- int iface, int altno);
-static int parse_audio_endpoints(struct snd_usb_audio *chip, int iface_no)
-{
- struct usb_device *dev;
- struct usb_interface *iface;
- struct usb_host_interface *alts;
- struct usb_interface_descriptor *altsd;
- int i, altno, err, stream;
- int format = 0, num_channels = 0;
- struct audioformat *fp = NULL;
- unsigned char *fmt, *csep;
- int num, protocol;
-
- dev = chip->dev;
-
- /* parse the interface's altsettings */
- iface = usb_ifnum_to_if(dev, iface_no);
-
- num = iface->num_altsetting;
-
- /*
- * Dallas DS4201 workaround: It presents 5 altsettings, but the last
- * one misses syncpipe, and does not produce any sound.
- */
- if (chip->usb_id == USB_ID(0x04fa, 0x4201))
- num = 4;
-
- for (i = 0; i < num; i++) {
- alts = &iface->altsetting[i];
- altsd = get_iface_desc(alts);
- protocol = altsd->bInterfaceProtocol;
- /* skip invalid one */
- if ((altsd->bInterfaceClass != USB_CLASS_AUDIO &&
- altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||
- (altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING &&
- altsd->bInterfaceSubClass != USB_SUBCLASS_VENDOR_SPEC) ||
- altsd->bNumEndpoints < 1 ||
- le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) == 0)
- continue;
- /* must be isochronous */
- if ((get_endpoint(alts, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
- USB_ENDPOINT_XFER_ISOC)
- continue;
- /* check direction */
- stream = (get_endpoint(alts, 0)->bEndpointAddress & USB_DIR_IN) ?
- SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
- altno = altsd->bAlternateSetting;
-
- /* audiophile usb: skip altsets incompatible with device_setup
- */
- if (chip->usb_id == USB_ID(0x0763, 0x2003) &&
- audiophile_skip_setting_quirk(chip, iface_no, altno))
- continue;
-
- /* get audio formats */
- switch (protocol) {
- case UAC_VERSION_1: {
- struct uac_as_header_descriptor_v1 *as =
- snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_AS_GENERAL);
-
- if (!as) {
- snd_printk(KERN_ERR "%d:%u:%d : UAC_AS_GENERAL descriptor not found\n",
- dev->devnum, iface_no, altno);
- continue;
- }
-
- if (as->bLength < sizeof(*as)) {
- snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_AS_GENERAL desc\n",
- dev->devnum, iface_no, altno);
- continue;
- }
-
- format = le16_to_cpu(as->wFormatTag); /* remember the format value */
- break;
- }
-
- case UAC_VERSION_2: {
- struct uac_as_header_descriptor_v2 *as =
- snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_AS_GENERAL);
-
- if (!as) {
- snd_printk(KERN_ERR "%d:%u:%d : UAC_AS_GENERAL descriptor not found\n",
- dev->devnum, iface_no, altno);
- continue;
- }
-
- if (as->bLength < sizeof(*as)) {
- snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_AS_GENERAL desc\n",
- dev->devnum, iface_no, altno);
- continue;
- }
-
- num_channels = as->bNrChannels;
- format = le32_to_cpu(as->bmFormats);
-
- break;
- }
-
- default:
- snd_printk(KERN_ERR "%d:%u:%d : unknown interface protocol %04x\n",
- dev->devnum, iface_no, altno, protocol);
- continue;
- }
-
- /* get format type */
- fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_FORMAT_TYPE);
- if (!fmt) {
- snd_printk(KERN_ERR "%d:%u:%d : no UAC_FORMAT_TYPE desc\n",
- dev->devnum, iface_no, altno);
- continue;
- }
- if (((protocol == UAC_VERSION_1) && (fmt[0] < 8)) ||
- ((protocol == UAC_VERSION_2) && (fmt[0] != 6))) {
- snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_FORMAT_TYPE desc\n",
- dev->devnum, iface_no, altno);
- continue;
- }
-
- /*
- * Blue Microphones workaround: The last altsetting is identical
- * with the previous one, except for a larger packet size, but
- * is actually a mislabeled two-channel setting; ignore it.
- */
- if (fmt[4] == 1 && fmt[5] == 2 && altno == 2 && num == 3 &&
- fp && fp->altsetting == 1 && fp->channels == 1 &&
- fp->format == SNDRV_PCM_FORMAT_S16_LE &&
- protocol == UAC_VERSION_1 &&
- le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) ==
- fp->maxpacksize * 2)
- continue;
-
- csep = snd_usb_find_desc(alts->endpoint[0].extra, alts->endpoint[0].extralen, NULL, USB_DT_CS_ENDPOINT);
- /* Creamware Noah has this descriptor after the 2nd endpoint */
- if (!csep && altsd->bNumEndpoints >= 2)
- csep = snd_usb_find_desc(alts->endpoint[1].extra, alts->endpoint[1].extralen, NULL, USB_DT_CS_ENDPOINT);
- if (!csep || csep[0] < 7 || csep[2] != UAC_EP_GENERAL) {
- snd_printk(KERN_WARNING "%d:%u:%d : no or invalid"
- " class specific endpoint descriptor\n",
- dev->devnum, iface_no, altno);
- csep = NULL;
- }
-
- fp = kzalloc(sizeof(*fp), GFP_KERNEL);
- if (! fp) {
- snd_printk(KERN_ERR "cannot malloc\n");
- return -ENOMEM;
- }
-
- fp->iface = iface_no;
- fp->altsetting = altno;
- fp->altset_idx = i;
- fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
- fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
- fp->datainterval = parse_datainterval(chip, alts);
- fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
- /* num_channels is only set for v2 interfaces */
- fp->channels = num_channels;
- if (snd_usb_get_speed(dev) == USB_SPEED_HIGH)
- fp->maxpacksize = (((fp->maxpacksize >> 11) & 3) + 1)
- * (fp->maxpacksize & 0x7ff);
- fp->attributes = csep ? csep[3] : 0;
-
- /* some quirks for attributes here */
-
- switch (chip->usb_id) {
- case USB_ID(0x0a92, 0x0053): /* AudioTrak Optoplay */
- /* Optoplay sets the sample rate attribute although
- * it seems not supporting it in fact.
- */
- fp->attributes &= ~UAC_EP_CS_ATTR_SAMPLE_RATE;
- break;
- case USB_ID(0x041e, 0x3020): /* Creative SB Audigy 2 NX */
- case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
- /* doesn't set the sample rate attribute, but supports it */
- fp->attributes |= UAC_EP_CS_ATTR_SAMPLE_RATE;
- break;
- case USB_ID(0x047f, 0x0ca1): /* plantronics headset */
- case USB_ID(0x077d, 0x07af): /* Griffin iMic (note that there is
- an older model 77d:223) */
- /*
- * plantronics headset and Griffin iMic have set adaptive-in
- * although it's really not...
- */
- fp->ep_attr &= ~USB_ENDPOINT_SYNCTYPE;
- if (stream == SNDRV_PCM_STREAM_PLAYBACK)
- fp->ep_attr |= USB_ENDPOINT_SYNC_ADAPTIVE;
- else
- fp->ep_attr |= USB_ENDPOINT_SYNC_SYNC;
- break;
- }
-
- /* ok, let's parse further... */
- if (parse_audio_format(chip, fp, format, fmt, stream, alts) < 0) {
- kfree(fp->rate_table);
- kfree(fp);
- continue;
- }
-
- snd_printdd(KERN_INFO "%d:%u:%d: add audio endpoint %#x\n", dev->devnum, iface_no, altno, fp->endpoint);
- err = add_audio_endpoint(chip, stream, fp);
- if (err < 0) {
- kfree(fp->rate_table);
- kfree(fp);
- return err;
- }
- /* try to set the interface... */
- usb_set_interface(chip->dev, iface_no, altno);
- init_usb_pitch(chip->dev, iface_no, alts, fp);
- init_usb_sample_rate(chip->dev, iface_no, alts, fp, fp->rate_max);
- }
- return 0;
-}
-
-
-/*
- * disconnect streams
- * called from snd_usb_audio_disconnect()
- */
-static void snd_usb_stream_disconnect(struct list_head *head)
-{
- int idx;
- struct snd_usb_stream *as;
- struct snd_usb_substream *subs;
-
- as = list_entry(head, struct snd_usb_stream, list);
- for (idx = 0; idx < 2; idx++) {
- subs = &as->substream[idx];
- if (!subs->num_formats)
- return;
- release_substream_urbs(subs, 1);
- subs->interface = -1;
- }
-}
-
-static int snd_usb_create_stream(struct snd_usb_audio *chip, int ctrlif, int interface)
-{
- struct usb_device *dev = chip->dev;
- struct usb_host_interface *alts;
- struct usb_interface_descriptor *altsd;
- struct usb_interface *iface = usb_ifnum_to_if(dev, interface);
-
- if (!iface) {
- snd_printk(KERN_ERR "%d:%u:%d : does not exist\n",
- dev->devnum, ctrlif, interface);
- return -EINVAL;
- }
-
- if (usb_interface_claimed(iface)) {
- snd_printdd(KERN_INFO "%d:%d:%d: skipping, already claimed\n",
- dev->devnum, ctrlif, interface);
- return -EINVAL;
- }
-
- alts = &iface->altsetting[0];
- altsd = get_iface_desc(alts);
- if ((altsd->bInterfaceClass == USB_CLASS_AUDIO ||
- altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC) &&
- altsd->bInterfaceSubClass == USB_SUBCLASS_MIDISTREAMING) {
- int err = snd_usbmidi_create(chip->card, iface,
- &chip->midi_list, NULL);
- if (err < 0) {
- snd_printk(KERN_ERR "%d:%u:%d: cannot create sequencer device\n",
- dev->devnum, ctrlif, interface);
- return -EINVAL;
- }
- usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
-
- return 0;
- }
-
- if ((altsd->bInterfaceClass != USB_CLASS_AUDIO &&
- altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||
- altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING) {
- snd_printdd(KERN_ERR "%d:%u:%d: skipping non-supported interface %d\n",
- dev->devnum, ctrlif, interface, altsd->bInterfaceClass);
- /* skip non-supported classes */
- return -EINVAL;
- }
-
- if (snd_usb_get_speed(dev) == USB_SPEED_LOW) {
- snd_printk(KERN_ERR "low speed audio streaming not supported\n");
- return -EINVAL;
- }
-
- if (! parse_audio_endpoints(chip, interface)) {
- usb_set_interface(dev, interface, 0); /* reset the current interface */
- usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
- return -EINVAL;
- }
-
- return 0;
-}
-
-/*
- * parse audio control descriptor and create pcm/midi streams
- */
-static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif)
-{
- struct usb_device *dev = chip->dev;
- struct usb_host_interface *host_iface;
- struct usb_interface_descriptor *altsd;
- void *control_header;
- int i, protocol;
-
- /* find audiocontrol interface */
- host_iface = &usb_ifnum_to_if(dev, ctrlif)->altsetting[0];
- control_header = snd_usb_find_csint_desc(host_iface->extra,
- host_iface->extralen,
- NULL, UAC_HEADER);
- altsd = get_iface_desc(host_iface);
- protocol = altsd->bInterfaceProtocol;
-
- if (!control_header) {
- snd_printk(KERN_ERR "cannot find UAC_HEADER\n");
- return -EINVAL;
- }
-
- switch (protocol) {
- case UAC_VERSION_1: {
- struct uac_ac_header_descriptor_v1 *h1 = control_header;
-
- if (!h1->bInCollection) {
- snd_printk(KERN_INFO "skipping empty audio interface (v1)\n");
- return -EINVAL;
- }
-
- if (h1->bLength < sizeof(*h1) + h1->bInCollection) {
- snd_printk(KERN_ERR "invalid UAC_HEADER (v1)\n");
- return -EINVAL;
- }
-
- for (i = 0; i < h1->bInCollection; i++)
- snd_usb_create_stream(chip, ctrlif, h1->baInterfaceNr[i]);
-
- break;
- }
-
- case UAC_VERSION_2: {
- struct uac_clock_source_descriptor *cs;
- struct usb_interface_assoc_descriptor *assoc =
- usb_ifnum_to_if(dev, ctrlif)->intf_assoc;
-
- if (!assoc) {
- snd_printk(KERN_ERR "Audio class v2 interfaces need an interface association\n");
- return -EINVAL;
- }
-
- /* FIXME: for now, we expect there is at least one clock source
- * descriptor and we always take the first one.
- * We should properly support devices with multiple clock sources,
- * clock selectors and sample rate conversion units. */
-
- cs = snd_usb_find_csint_desc(host_iface->extra, host_iface->extralen,
- NULL, UAC_CLOCK_SOURCE);
-
- if (!cs) {
- snd_printk(KERN_ERR "CLOCK_SOURCE descriptor not found\n");
- return -EINVAL;
- }
-
- chip->clock_id = cs->bClockID;
-
- for (i = 0; i < assoc->bInterfaceCount; i++) {
- int intf = assoc->bFirstInterface + i;
-
- if (intf != ctrlif)
- snd_usb_create_stream(chip, ctrlif, intf);
- }
-
- break;
- }
-
- default:
- snd_printk(KERN_ERR "unknown protocol version 0x%02x\n", protocol);
- return -EINVAL;
- }
-
- return 0;
-}
-
-/*
- * create a stream for an endpoint/altsetting without proper descriptors
- */
-static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
- struct usb_interface *iface,
- const struct snd_usb_audio_quirk *quirk)
-{
- struct audioformat *fp;
- struct usb_host_interface *alts;
- int stream, err;
- unsigned *rate_table = NULL;
-
- fp = kmemdup(quirk->data, sizeof(*fp), GFP_KERNEL);
- if (! fp) {
- snd_printk(KERN_ERR "cannot memdup\n");
- return -ENOMEM;
- }
- if (fp->nr_rates > 0) {
- rate_table = kmalloc(sizeof(int) * fp->nr_rates, GFP_KERNEL);
- if (!rate_table) {
- kfree(fp);
- return -ENOMEM;
- }
- memcpy(rate_table, fp->rate_table, sizeof(int) * fp->nr_rates);
- fp->rate_table = rate_table;
- }
-
- stream = (fp->endpoint & USB_DIR_IN)
- ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
- err = add_audio_endpoint(chip, stream, fp);
- if (err < 0) {
- kfree(fp);
- kfree(rate_table);
- return err;
- }
- if (fp->iface != get_iface_desc(&iface->altsetting[0])->bInterfaceNumber ||
- fp->altset_idx >= iface->num_altsetting) {
- kfree(fp);
- kfree(rate_table);
- return -EINVAL;
- }
- alts = &iface->altsetting[fp->altset_idx];
- fp->datainterval = parse_datainterval(chip, alts);
- fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
- usb_set_interface(chip->dev, fp->iface, 0);
- init_usb_pitch(chip->dev, fp->iface, alts, fp);
- init_usb_sample_rate(chip->dev, fp->iface, alts, fp, fp->rate_max);
- return 0;
-}
-
-/*
- * create a stream for an interface with proper descriptors
- */
-static int create_standard_audio_quirk(struct snd_usb_audio *chip,
- struct usb_interface *iface,
- const struct snd_usb_audio_quirk *quirk)
-{
- struct usb_host_interface *alts;
- struct usb_interface_descriptor *altsd;
- int err;
-
- alts = &iface->altsetting[0];
- altsd = get_iface_desc(alts);
- err = parse_audio_endpoints(chip, altsd->bInterfaceNumber);
- if (err < 0) {
- snd_printk(KERN_ERR "cannot setup if %d: error %d\n",
- altsd->bInterfaceNumber, err);
- return err;
- }
- /* reset the current interface */
- usb_set_interface(chip->dev, altsd->bInterfaceNumber, 0);
- return 0;
-}
-
-/*
- * Create a stream for an Edirol UA-700/UA-25/UA-4FX interface.
- * The only way to detect the sample rate is by looking at wMaxPacketSize.
- */
-static int create_uaxx_quirk(struct snd_usb_audio *chip,
- struct usb_interface *iface,
- const struct snd_usb_audio_quirk *quirk)
-{
- static const struct audioformat ua_format = {
- .format = SNDRV_PCM_FORMAT_S24_3LE,
- .channels = 2,
- .fmt_type = UAC_FORMAT_TYPE_I,
- .altsetting = 1,
- .altset_idx = 1,
- .rates = SNDRV_PCM_RATE_CONTINUOUS,
- };
- struct usb_host_interface *alts;
- struct usb_interface_descriptor *altsd;
- struct audioformat *fp;
- int stream, err;
-
- /* both PCM and MIDI interfaces have 2 or more altsettings */
- if (iface->num_altsetting < 2)
- return -ENXIO;
- alts = &iface->altsetting[1];
- altsd = get_iface_desc(alts);
-
- if (altsd->bNumEndpoints == 2) {
- static const struct snd_usb_midi_endpoint_info ua700_ep = {
- .out_cables = 0x0003,
- .in_cables = 0x0003
- };
- static const struct snd_usb_audio_quirk ua700_quirk = {
- .type = QUIRK_MIDI_FIXED_ENDPOINT,
- .data = &ua700_ep
- };
- static const struct snd_usb_midi_endpoint_info uaxx_ep = {
- .out_cables = 0x0001,
- .in_cables = 0x0001
- };
- static const struct snd_usb_audio_quirk uaxx_quirk = {
- .type = QUIRK_MIDI_FIXED_ENDPOINT,
- .data = &uaxx_ep
- };
- const struct snd_usb_audio_quirk *quirk =
- chip->usb_id == USB_ID(0x0582, 0x002b)
- ? &ua700_quirk : &uaxx_quirk;
- return snd_usbmidi_create(chip->card, iface,
- &chip->midi_list, quirk);
- }
-
- if (altsd->bNumEndpoints != 1)
- return -ENXIO;
-
- fp = kmalloc(sizeof(*fp), GFP_KERNEL);
- if (!fp)
- return -ENOMEM;
- memcpy(fp, &ua_format, sizeof(*fp));
-
- fp->iface = altsd->bInterfaceNumber;
- fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
- fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
- fp->datainterval = 0;
- fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
-
- switch (fp->maxpacksize) {
- case 0x120:
- fp->rate_max = fp->rate_min = 44100;
- break;
- case 0x138:
- case 0x140:
- fp->rate_max = fp->rate_min = 48000;
- break;
- case 0x258:
- case 0x260:
- fp->rate_max = fp->rate_min = 96000;
- break;
- default:
- snd_printk(KERN_ERR "unknown sample rate\n");
- kfree(fp);
- return -ENXIO;
- }
-
- stream = (fp->endpoint & USB_DIR_IN)
- ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
- err = add_audio_endpoint(chip, stream, fp);
- if (err < 0) {
- kfree(fp);
- return err;
- }
- usb_set_interface(chip->dev, fp->iface, 0);
- return 0;
-}
-
-static int snd_usb_create_quirk(struct snd_usb_audio *chip,
- struct usb_interface *iface,
- const struct snd_usb_audio_quirk *quirk);
-
-/*
- * handle the quirks for the contained interfaces
- */
-static int create_composite_quirk(struct snd_usb_audio *chip,
- struct usb_interface *iface,
- const struct snd_usb_audio_quirk *quirk)
-{
- int probed_ifnum = get_iface_desc(iface->altsetting)->bInterfaceNumber;
- int err;
-
- for (quirk = quirk->data; quirk->ifnum >= 0; ++quirk) {
- iface = usb_ifnum_to_if(chip->dev, quirk->ifnum);
- if (!iface)
- continue;
- if (quirk->ifnum != probed_ifnum &&
- usb_interface_claimed(iface))
- continue;
- err = snd_usb_create_quirk(chip, iface, quirk);
- if (err < 0)
- return err;
- if (quirk->ifnum != probed_ifnum)
- usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
- }
- return 0;
-}
-
-static int ignore_interface_quirk(struct snd_usb_audio *chip,
- struct usb_interface *iface,
- const struct snd_usb_audio_quirk *quirk)
-{
- return 0;
-}
-
-/*
- * Allow alignment on audio sub-slot (channel samples) rather than
- * on audio slots (audio frames)
- */
-static int create_align_transfer_quirk(struct snd_usb_audio *chip,
- struct usb_interface *iface,
- const struct snd_usb_audio_quirk *quirk)
-{
- chip->txfr_quirk = 1;
- return 1; /* Continue with creating streams and mixer */
-}
-
-
-/*
- * boot quirks
- */
-
-#define EXTIGY_FIRMWARE_SIZE_OLD 794
-#define EXTIGY_FIRMWARE_SIZE_NEW 483
-
-static int snd_usb_extigy_boot_quirk(struct usb_device *dev, struct usb_interface *intf)
-{
- struct usb_host_config *config = dev->actconfig;
- int err;
-
- if (le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_OLD ||
- le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_NEW) {
- snd_printdd("sending Extigy boot sequence...\n");
- /* Send message to force it to reconnect with full interface. */
- err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev,0),
- 0x10, 0x43, 0x0001, 0x000a, NULL, 0, 1000);
- if (err < 0) snd_printdd("error sending boot message: %d\n", err);
- err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
- &dev->descriptor, sizeof(dev->descriptor));
- config = dev->actconfig;
- if (err < 0) snd_printdd("error usb_get_descriptor: %d\n", err);
- err = usb_reset_configuration(dev);
- if (err < 0) snd_printdd("error usb_reset_configuration: %d\n", err);
- snd_printdd("extigy_boot: new boot length = %d\n",
- le16_to_cpu(get_cfg_desc(config)->wTotalLength));
- return -ENODEV; /* quit this anyway */
- }
- return 0;
-}
-
-static int snd_usb_audigy2nx_boot_quirk(struct usb_device *dev)
-{
- u8 buf = 1;
-
- snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), 0x2a,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER,
- 0, 0, &buf, 1, 1000);
- if (buf == 0) {
- snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0x29,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
- 1, 2000, NULL, 0, 1000);
- return -ENODEV;
- }
- return 0;
-}
-
-/*
- * C-Media CM106/CM106+ have four 16-bit internal registers that are nicely
- * documented in the device's data sheet.
- */
-static int snd_usb_cm106_write_int_reg(struct usb_device *dev, int reg, u16 value)
-{
- u8 buf[4];
- buf[0] = 0x20;
- buf[1] = value & 0xff;
- buf[2] = (value >> 8) & 0xff;
- buf[3] = reg;
- return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_CONFIGURATION,
- USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_ENDPOINT,
- 0, 0, &buf, 4, 1000);
-}
-
-static int snd_usb_cm106_boot_quirk(struct usb_device *dev)
-{
- /*
- * Enable line-out driver mode, set headphone source to front
- * channels, enable stereo mic.
- */
- return snd_usb_cm106_write_int_reg(dev, 2, 0x8004);
-}
-
-/*
- * C-Media CM6206 is based on CM106 with two additional
- * registers that are not documented in the data sheet.
- * Values here are chosen based on sniffing USB traffic
- * under Windows.
- */
-static int snd_usb_cm6206_boot_quirk(struct usb_device *dev)
-{
- int err, reg;
- int val[] = {0x200c, 0x3000, 0xf800, 0x143f, 0x0000, 0x3000};
-
- for (reg = 0; reg < ARRAY_SIZE(val); reg++) {
- err = snd_usb_cm106_write_int_reg(dev, reg, val[reg]);
- if (err < 0)
- return err;
- }
-
- return err;
-}
-
-/*
- * This call will put the synth in "USB send" mode, i.e it will send MIDI
- * messages through USB (this is disabled at startup). The synth will
- * acknowledge by sending a sysex on endpoint 0x85 and by displaying a USB
- * sign on its LCD. Values here are chosen based on sniffing USB traffic
- * under Windows.
- */
-static int snd_usb_accessmusic_boot_quirk(struct usb_device *dev)
-{
- int err, actual_length;
-
- /* "midi send" enable */
- static const u8 seq[] = { 0x4e, 0x73, 0x52, 0x01 };
-
- void *buf = kmemdup(seq, ARRAY_SIZE(seq), GFP_KERNEL);
- if (!buf)
- return -ENOMEM;
- err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x05), buf,
- ARRAY_SIZE(seq), &actual_length, 1000);
- kfree(buf);
- if (err < 0)
- return err;
-
- return 0;
-}
-
-/*
- * Setup quirks
- */
-#define AUDIOPHILE_SET 0x01 /* if set, parse device_setup */
-#define AUDIOPHILE_SET_DTS 0x02 /* if set, enable DTS Digital Output */
-#define AUDIOPHILE_SET_96K 0x04 /* 48-96KHz rate if set, 8-48KHz otherwise */
-#define AUDIOPHILE_SET_24B 0x08 /* 24bits sample if set, 16bits otherwise */
-#define AUDIOPHILE_SET_DI 0x10 /* if set, enable Digital Input */
-#define AUDIOPHILE_SET_MASK 0x1F /* bit mask for setup value */
-#define AUDIOPHILE_SET_24B_48K_DI 0x19 /* value for 24bits+48KHz+Digital Input */
-#define AUDIOPHILE_SET_24B_48K_NOTDI 0x09 /* value for 24bits+48KHz+No Digital Input */
-#define AUDIOPHILE_SET_16B_48K_DI 0x11 /* value for 16bits+48KHz+Digital Input */
-#define AUDIOPHILE_SET_16B_48K_NOTDI 0x01 /* value for 16bits+48KHz+No Digital Input */
-
-static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip,
- int iface, int altno)
-{
- /* Reset ALL ifaces to 0 altsetting.
- * Call it for every possible altsetting of every interface.
- */
- usb_set_interface(chip->dev, iface, 0);
-
- if (device_setup[chip->index] & AUDIOPHILE_SET) {
- if ((device_setup[chip->index] & AUDIOPHILE_SET_DTS)
- && altno != 6)
- return 1; /* skip this altsetting */
- if ((device_setup[chip->index] & AUDIOPHILE_SET_96K)
- && altno != 1)
- return 1; /* skip this altsetting */
- if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) ==
- AUDIOPHILE_SET_24B_48K_DI && altno != 2)
- return 1; /* skip this altsetting */
- if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) ==
- AUDIOPHILE_SET_24B_48K_NOTDI && altno != 3)
- return 1; /* skip this altsetting */
- if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) ==
- AUDIOPHILE_SET_16B_48K_DI && altno != 4)
- return 1; /* skip this altsetting */
- if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) ==
- AUDIOPHILE_SET_16B_48K_NOTDI && altno != 5)
- return 1; /* skip this altsetting */
- }
- return 0; /* keep this altsetting */
-}
-
-static int create_any_midi_quirk(struct snd_usb_audio *chip,
- struct usb_interface *intf,
- const struct snd_usb_audio_quirk *quirk)
-{
- return snd_usbmidi_create(chip->card, intf, &chip->midi_list, quirk);
-}
-
-/*
- * audio-interface quirks
- *
- * returns zero if no standard audio/MIDI parsing is needed.
- * returns a postive value if standard audio/midi interfaces are parsed
- * after this.
- * returns a negative value at error.
- */
-static int snd_usb_create_quirk(struct snd_usb_audio *chip,
- struct usb_interface *iface,
- const struct snd_usb_audio_quirk *quirk)
-{
- typedef int (*quirk_func_t)(struct snd_usb_audio *, struct usb_interface *,
- const struct snd_usb_audio_quirk *);
- static const quirk_func_t quirk_funcs[] = {
- [QUIRK_IGNORE_INTERFACE] = ignore_interface_quirk,
- [QUIRK_COMPOSITE] = create_composite_quirk,
- [QUIRK_MIDI_STANDARD_INTERFACE] = create_any_midi_quirk,
- [QUIRK_MIDI_FIXED_ENDPOINT] = create_any_midi_quirk,
- [QUIRK_MIDI_YAMAHA] = create_any_midi_quirk,
- [QUIRK_MIDI_MIDIMAN] = create_any_midi_quirk,
- [QUIRK_MIDI_NOVATION] = create_any_midi_quirk,
- [QUIRK_MIDI_FASTLANE] = create_any_midi_quirk,
- [QUIRK_MIDI_EMAGIC] = create_any_midi_quirk,
- [QUIRK_MIDI_CME] = create_any_midi_quirk,
- [QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk,
- [QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk,
- [QUIRK_AUDIO_EDIROL_UAXX] = create_uaxx_quirk,
- [QUIRK_AUDIO_ALIGN_TRANSFER] = create_align_transfer_quirk
- };
-
- if (quirk->type < QUIRK_TYPE_COUNT) {
- return quirk_funcs[quirk->type](chip, iface, quirk);
- } else {
- snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type);
- return -ENXIO;
- }
-}
-
-
-/*
- * common proc files to show the usb device info
- */
-static void proc_audio_usbbus_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
-{
- struct snd_usb_audio *chip = entry->private_data;
- if (!chip->shutdown)
- snd_iprintf(buffer, "%03d/%03d\n", chip->dev->bus->busnum, chip->dev->devnum);
-}
-
-static void proc_audio_usbid_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
-{
- struct snd_usb_audio *chip = entry->private_data;
- if (!chip->shutdown)
- snd_iprintf(buffer, "%04x:%04x\n",
- USB_ID_VENDOR(chip->usb_id),
- USB_ID_PRODUCT(chip->usb_id));
-}
-
-static void snd_usb_audio_create_proc(struct snd_usb_audio *chip)
-{
- struct snd_info_entry *entry;
- if (!snd_card_proc_new(chip->card, "usbbus", &entry))
- snd_info_set_text_ops(entry, chip, proc_audio_usbbus_read);
- if (!snd_card_proc_new(chip->card, "usbid", &entry))
- snd_info_set_text_ops(entry, chip, proc_audio_usbid_read);
-}
-
-/*
- * free the chip instance
- *
- * here we have to do not much, since pcm and controls are already freed
- *
- */
-
-static int snd_usb_audio_free(struct snd_usb_audio *chip)
-{
- kfree(chip);
- return 0;
-}
-
-static int snd_usb_audio_dev_free(struct snd_device *device)
-{
- struct snd_usb_audio *chip = device->device_data;
- return snd_usb_audio_free(chip);
-}
-
-
-/*
- * create a chip instance and set its names.
- */
-static int snd_usb_audio_create(struct usb_device *dev, int idx,
- const struct snd_usb_audio_quirk *quirk,
- struct snd_usb_audio **rchip)
-{
- struct snd_card *card;
- struct snd_usb_audio *chip;
- int err, len;
- char component[14];
- static struct snd_device_ops ops = {
- .dev_free = snd_usb_audio_dev_free,
- };
-
- *rchip = NULL;
-
- if (snd_usb_get_speed(dev) != USB_SPEED_LOW &&
- snd_usb_get_speed(dev) != USB_SPEED_FULL &&
- snd_usb_get_speed(dev) != USB_SPEED_HIGH) {
- snd_printk(KERN_ERR "unknown device speed %d\n", snd_usb_get_speed(dev));
- return -ENXIO;
- }
-
- err = snd_card_create(index[idx], id[idx], THIS_MODULE, 0, &card);
- if (err < 0) {
- snd_printk(KERN_ERR "cannot create card instance %d\n", idx);
- return err;
- }
-
- chip = kzalloc(sizeof(*chip), GFP_KERNEL);
- if (! chip) {
- snd_card_free(card);
- return -ENOMEM;
- }
-
- chip->index = idx;
- chip->dev = dev;
- chip->card = card;
- chip->usb_id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
- le16_to_cpu(dev->descriptor.idProduct));
- INIT_LIST_HEAD(&chip->pcm_list);
- INIT_LIST_HEAD(&chip->midi_list);
- INIT_LIST_HEAD(&chip->mixer_list);
-
- if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
- snd_usb_audio_free(chip);
- snd_card_free(card);
- return err;
- }
-
- strcpy(card->driver, "USB-Audio");
- sprintf(component, "USB%04x:%04x",
- USB_ID_VENDOR(chip->usb_id), USB_ID_PRODUCT(chip->usb_id));
- snd_component_add(card, component);
-
- /* retrieve the device string as shortname */
- if (quirk && quirk->product_name) {
- strlcpy(card->shortname, quirk->product_name, sizeof(card->shortname));
- } else {
- if (!dev->descriptor.iProduct ||
- usb_string(dev, dev->descriptor.iProduct,
- card->shortname, sizeof(card->shortname)) <= 0) {
- /* no name available from anywhere, so use ID */
- sprintf(card->shortname, "USB Device %#04x:%#04x",
- USB_ID_VENDOR(chip->usb_id),
- USB_ID_PRODUCT(chip->usb_id));
- }
- }
-
- /* retrieve the vendor and device strings as longname */
- if (quirk && quirk->vendor_name) {
- len = strlcpy(card->longname, quirk->vendor_name, sizeof(card->longname));
- } else {
- if (dev->descriptor.iManufacturer)
- len = usb_string(dev, dev->descriptor.iManufacturer,
- card->longname, sizeof(card->longname));
- else
- len = 0;
- /* we don't really care if there isn't any vendor string */
- }
- if (len > 0)
- strlcat(card->longname, " ", sizeof(card->longname));
-
- strlcat(card->longname, card->shortname, sizeof(card->longname));
-
- len = strlcat(card->longname, " at ", sizeof(card->longname));
-
- if (len < sizeof(card->longname))
- usb_make_path(dev, card->longname + len, sizeof(card->longname) - len);
-
- strlcat(card->longname,
- snd_usb_get_speed(dev) == USB_SPEED_LOW ? ", low speed" :
- snd_usb_get_speed(dev) == USB_SPEED_FULL ? ", full speed" :
- ", high speed",
- sizeof(card->longname));
-
- snd_usb_audio_create_proc(chip);
-
- *rchip = chip;
- return 0;
-}
-
-
-/*
- * probe the active usb device
- *
- * note that this can be called multiple times per a device, when it
- * includes multiple audio control interfaces.
- *
- * thus we check the usb device pointer and creates the card instance
- * only at the first time. the successive calls of this function will
- * append the pcm interface to the corresponding card.
- */
-static void *snd_usb_audio_probe(struct usb_device *dev,
- struct usb_interface *intf,
- const struct usb_device_id *usb_id)
-{
- const struct snd_usb_audio_quirk *quirk = (const struct snd_usb_audio_quirk *)usb_id->driver_info;
- int i, err;
- struct snd_usb_audio *chip;
- struct usb_host_interface *alts;
- int ifnum;
- u32 id;
-
- alts = &intf->altsetting[0];
- ifnum = get_iface_desc(alts)->bInterfaceNumber;
- id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
- le16_to_cpu(dev->descriptor.idProduct));
- if (quirk && quirk->ifnum >= 0 && ifnum != quirk->ifnum)
- goto __err_val;
-
- /* SB Extigy needs special boot-up sequence */
- /* if more models come, this will go to the quirk list. */
- if (id == USB_ID(0x041e, 0x3000)) {
- if (snd_usb_extigy_boot_quirk(dev, intf) < 0)
- goto __err_val;
- }
- /* SB Audigy 2 NX needs its own boot-up magic, too */
- if (id == USB_ID(0x041e, 0x3020)) {
- if (snd_usb_audigy2nx_boot_quirk(dev) < 0)
- goto __err_val;
- }
-
- /* C-Media CM106 / Turtle Beach Audio Advantage Roadie */
- if (id == USB_ID(0x10f5, 0x0200)) {
- if (snd_usb_cm106_boot_quirk(dev) < 0)
- goto __err_val;
- }
-
- /* C-Media CM6206 / CM106-Like Sound Device */
- if (id == USB_ID(0x0d8c, 0x0102)) {
- if (snd_usb_cm6206_boot_quirk(dev) < 0)
- goto __err_val;
- }
-
- /* Access Music VirusTI Desktop */
- if (id == USB_ID(0x133e, 0x0815)) {
- if (snd_usb_accessmusic_boot_quirk(dev) < 0)
- goto __err_val;
- }
-
- /*
- * found a config. now register to ALSA
- */
-
- /* check whether it's already registered */
- chip = NULL;
- mutex_lock(®ister_mutex);
- for (i = 0; i < SNDRV_CARDS; i++) {
- if (usb_chip[i] && usb_chip[i]->dev == dev) {
- if (usb_chip[i]->shutdown) {
- snd_printk(KERN_ERR "USB device is in the shutdown state, cannot create a card instance\n");
- goto __error;
- }
- chip = usb_chip[i];
- break;
- }
- }
- if (! chip) {
- /* it's a fresh one.
- * now look for an empty slot and create a new card instance
- */
- for (i = 0; i < SNDRV_CARDS; i++)
- if (enable[i] && ! usb_chip[i] &&
- (vid[i] == -1 || vid[i] == USB_ID_VENDOR(id)) &&
- (pid[i] == -1 || pid[i] == USB_ID_PRODUCT(id))) {
- if (snd_usb_audio_create(dev, i, quirk, &chip) < 0) {
- goto __error;
- }
- snd_card_set_dev(chip->card, &intf->dev);
- break;
- }
- if (!chip) {
- printk(KERN_ERR "no available usb audio device\n");
- goto __error;
- }
- }
-
- chip->txfr_quirk = 0;
- err = 1; /* continue */
- if (quirk && quirk->ifnum != QUIRK_NO_INTERFACE) {
- /* need some special handlings */
- if ((err = snd_usb_create_quirk(chip, intf, quirk)) < 0)
- goto __error;
- }
-
- if (err > 0) {
- /* create normal USB audio interfaces */
- if (snd_usb_create_streams(chip, ifnum) < 0 ||
- snd_usb_create_mixer(chip, ifnum, ignore_ctl_error) < 0) {
- goto __error;
- }
- }
-
- /* we are allowed to call snd_card_register() many times */
- if (snd_card_register(chip->card) < 0) {
- goto __error;
- }
-
- usb_chip[chip->index] = chip;
- chip->num_interfaces++;
- mutex_unlock(®ister_mutex);
- return chip;
-
- __error:
- if (chip && !chip->num_interfaces)
- snd_card_free(chip->card);
- mutex_unlock(®ister_mutex);
- __err_val:
- return NULL;
-}
-
-/*
- * we need to take care of counter, since disconnection can be called also
- * many times as well as usb_audio_probe().
- */
-static void snd_usb_audio_disconnect(struct usb_device *dev, void *ptr)
-{
- struct snd_usb_audio *chip;
- struct snd_card *card;
- struct list_head *p;
-
- if (ptr == (void *)-1L)
- return;
-
- chip = ptr;
- card = chip->card;
- mutex_lock(®ister_mutex);
- chip->shutdown = 1;
- chip->num_interfaces--;
- if (chip->num_interfaces <= 0) {
- snd_card_disconnect(card);
- /* release the pcm resources */
- list_for_each(p, &chip->pcm_list) {
- snd_usb_stream_disconnect(p);
- }
- /* release the midi resources */
- list_for_each(p, &chip->midi_list) {
- snd_usbmidi_disconnect(p);
- }
- /* release mixer resources */
- list_for_each(p, &chip->mixer_list) {
- snd_usb_mixer_disconnect(p);
- }
- usb_chip[chip->index] = NULL;
- mutex_unlock(®ister_mutex);
- snd_card_free_when_closed(card);
- } else {
- mutex_unlock(®ister_mutex);
- }
-}
-
-/*
- * new 2.5 USB kernel API
- */
-static int usb_audio_probe(struct usb_interface *intf,
- const struct usb_device_id *id)
-{
- void *chip;
- chip = snd_usb_audio_probe(interface_to_usbdev(intf), intf, id);
- if (chip) {
- usb_set_intfdata(intf, chip);
- return 0;
- } else
- return -EIO;
-}
-
-static void usb_audio_disconnect(struct usb_interface *intf)
-{
- snd_usb_audio_disconnect(interface_to_usbdev(intf),
- usb_get_intfdata(intf));
-}
-
-#ifdef CONFIG_PM
-static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message)
-{
- struct snd_usb_audio *chip = usb_get_intfdata(intf);
- struct list_head *p;
- struct snd_usb_stream *as;
-
- if (chip == (void *)-1L)
- return 0;
-
- snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
- if (!chip->num_suspended_intf++) {
- list_for_each(p, &chip->pcm_list) {
- as = list_entry(p, struct snd_usb_stream, list);
- snd_pcm_suspend_all(as->pcm);
- }
- }
-
- return 0;
-}
-
-static int usb_audio_resume(struct usb_interface *intf)
-{
- struct snd_usb_audio *chip = usb_get_intfdata(intf);
-
- if (chip == (void *)-1L)
- return 0;
- if (--chip->num_suspended_intf)
- return 0;
- /*
- * ALSA leaves material resumption to user space
- * we just notify
- */
-
- snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
-
- return 0;
-}
-#endif /* CONFIG_PM */
-
-static int __init snd_usb_audio_init(void)
-{
- if (nrpacks < 1 || nrpacks > MAX_PACKS) {
- printk(KERN_WARNING "invalid nrpacks value.\n");
- return -EINVAL;
- }
- return usb_register(&usb_audio_driver);
-}
-
-
-static void __exit snd_usb_audio_cleanup(void)
-{
- usb_deregister(&usb_audio_driver);
-}
-
-module_init(snd_usb_audio_init);
-module_exit(snd_usb_audio_cleanup);
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-/* maximum number of endpoints per interface */
-#define MIDI_MAX_ENDPOINTS 2
-
/* handling of USB vendor/product ID pairs as 32-bit numbers */
#define USB_ID(vendor, product) (((vendor) << 16) | (product))
#define USB_ID_VENDOR(id) ((id) >> 16)
#define USB_ID_PRODUCT(id) ((u16)(id))
/*
+ *
*/
struct snd_usb_audio {
struct list_head midi_list; /* list of midi interfaces */
struct list_head mixer_list; /* list of mixer interfaces */
+
+ int setup; /* from the 'device_setup' module param */
+ int nrpacks; /* from the 'nrpacks' module param */
+ int async_unlink; /* from the 'async_unlink' module param */
};
/*
const void *data;
};
-/* data for QUIRK_MIDI_FIXED_ENDPOINT */
-struct snd_usb_midi_endpoint_info {
- int8_t out_ep; /* ep number, 0 autodetect */
- uint8_t out_interval; /* interval for interrupt endpoints */
- int8_t in_ep;
- uint8_t in_interval;
- uint16_t out_cables; /* bitmask */
- uint16_t in_cables; /* bitmask */
-};
-
-/* for QUIRK_MIDI_YAMAHA, data is NULL */
-
-/* for QUIRK_MIDI_MIDIMAN, data points to a snd_usb_midi_endpoint_info
- * structure (out_cables and in_cables only) */
-
-/* for QUIRK_COMPOSITE, data points to an array of snd_usb_audio_quirk
- * structures, terminated with .ifnum = -1 */
-
-/* for QUIRK_AUDIO_FIXED_ENDPOINT, data points to an audioformat structure */
-
-/* for QUIRK_AUDIO/MIDI_STANDARD_INTERFACE, data is NULL */
-
-/* for QUIRK_AUDIO_EDIROL_UAXX, data is NULL */
-
-/* for QUIRK_IGNORE_INTERFACE, data is NULL */
-
-/* for QUIRK_MIDI_NOVATION and _RAW, data is NULL */
-
-/* for QUIRK_MIDI_EMAGIC, data points to a snd_usb_midi_endpoint_info
- * structure (out_cables and in_cables only) */
-
-/* for QUIRK_MIDI_CME, data is NULL */
-
-/*
- */
-
-/*E-mu USB samplerate control quirk*/
-enum {
- EMU_QUIRK_SR_44100HZ = 0,
- EMU_QUIRK_SR_48000HZ,
- EMU_QUIRK_SR_88200HZ,
- EMU_QUIRK_SR_96000HZ,
- EMU_QUIRK_SR_176400HZ,
- EMU_QUIRK_SR_192000HZ
-};
-
#define combine_word(s) ((*(s)) | ((unsigned int)(s)[1] << 8))
#define combine_triple(s) (combine_word(s) | ((unsigned int)(s)[2] << 16))
#define combine_quad(s) (combine_triple(s) | ((unsigned int)(s)[3] << 24))
-unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size);
-
-void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype);
-void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype);
-
-int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe,
- __u8 request, __u8 requesttype, __u16 value, __u16 index,
- void *data, __u16 size, int timeout);
-
-int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
- int ignore_error);
-void snd_usb_mixer_disconnect(struct list_head *p);
-
-int snd_usbmidi_create(struct snd_card *card,
- struct usb_interface *iface,
- struct list_head *midi_list,
- const struct snd_usb_audio_quirk *quirk);
-void snd_usbmidi_input_stop(struct list_head* p);
-void snd_usbmidi_input_start(struct list_head* p);
-void snd_usbmidi_disconnect(struct list_head *p);
-
-void snd_emuusb_set_samplerate(struct snd_usb_audio *chip,
- unsigned char samplerate_id);
-
-/*
- * retrieve usb_interface descriptor from the host interface
- * (conditional for compatibility with the older API)
- */
-#ifndef get_iface_desc
-#define get_iface_desc(iface) (&(iface)->desc)
-#define get_endpoint(alt,ep) (&(alt)->endpoint[ep].desc)
-#define get_ep_desc(ep) (&(ep)->desc)
-#define get_cfg_desc(cfg) (&(cfg)->desc)
-#endif
-
-#ifndef snd_usb_get_speed
-#define snd_usb_get_speed(dev) ((dev)->speed)
-#endif
-
#endif /* __USBAUDIO_H */
#define MODNAME "US122L"
#include "usb_stream.c"
#include "../usbaudio.h"
+#include "../midi.h"
#include "us122l.h"
MODULE_AUTHOR("Karsten Wiese <fzu@wemgehoertderstaat.de>");
#ifndef USBUSX2Y_H
#define USBUSX2Y_H
#include "../usbaudio.h"
+#include "../midi.h"
#include "usbus428ctldefs.h"
#define NRURBS 2
projects / mv-sheeva.git / commitdiff