2 em28xx.h - driver for Empia EM2800/EM2820/2840 USB video capture devices
4 Copyright (C) 2005 Markus Rechberger <mrechberger@gmail.com>
5 Ludovico Cavedon <cavedon@sssup.it>
6 Mauro Carvalho Chehab <mchehab@infradead.org>
8 Based on the em2800 driver from Sascha Sommer <saschasommer@freenet.de>
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 #include <linux/videodev2.h>
29 #include <media/videobuf-vmalloc.h>
30 #include <media/v4l2-device.h>
32 #include <linux/i2c.h>
33 #include <linux/mutex.h>
34 #include <media/ir-kbd-i2c.h>
35 #if defined(CONFIG_VIDEO_EM28XX_DVB) || defined(CONFIG_VIDEO_EM28XX_DVB_MODULE)
36 #include <media/videobuf-dvb.h>
38 #include "tuner-xc2028.h"
39 #include "em28xx-reg.h"
41 /* Boards supported by driver */
42 #define EM2800_BOARD_UNKNOWN 0
43 #define EM2820_BOARD_UNKNOWN 1
44 #define EM2820_BOARD_TERRATEC_CINERGY_250 2
45 #define EM2820_BOARD_PINNACLE_USB_2 3
46 #define EM2820_BOARD_HAUPPAUGE_WINTV_USB_2 4
47 #define EM2820_BOARD_MSI_VOX_USB_2 5
48 #define EM2800_BOARD_TERRATEC_CINERGY_200 6
49 #define EM2800_BOARD_LEADTEK_WINFAST_USBII 7
50 #define EM2800_BOARD_KWORLD_USB2800 8
51 #define EM2820_BOARD_PINNACLE_DVC_90 9
52 #define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900 10
53 #define EM2880_BOARD_TERRATEC_HYBRID_XS 11
54 #define EM2820_BOARD_KWORLD_PVRTV2800RF 12
55 #define EM2880_BOARD_TERRATEC_PRODIGY_XS 13
56 #define EM2820_BOARD_PROLINK_PLAYTV_USB2 14
57 #define EM2800_BOARD_VGEAR_POCKETTV 15
58 #define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950 16
59 #define EM2880_BOARD_PINNACLE_PCTV_HD_PRO 17
60 #define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2 18
61 #define EM2860_BOARD_SAA711X_REFERENCE_DESIGN 19
62 #define EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600 20
63 #define EM2800_BOARD_GRABBEEX_USB2800 21
64 #define EM2750_BOARD_UNKNOWN 22
65 #define EM2750_BOARD_DLCW_130 23
66 #define EM2820_BOARD_DLINK_USB_TV 24
67 #define EM2820_BOARD_GADMEI_UTV310 25
68 #define EM2820_BOARD_HERCULES_SMART_TV_USB2 26
69 #define EM2820_BOARD_PINNACLE_USB_2_FM1216ME 27
70 #define EM2820_BOARD_LEADTEK_WINFAST_USBII_DELUXE 28
71 #define EM2820_BOARD_VIDEOLOGY_20K14XUSB 30
72 #define EM2821_BOARD_USBGEAR_VD204 31
73 #define EM2821_BOARD_SUPERCOMP_USB_2 32
74 #define EM2860_BOARD_TERRATEC_HYBRID_XS 34
75 #define EM2860_BOARD_TYPHOON_DVD_MAKER 35
76 #define EM2860_BOARD_NETGMBH_CAM 36
77 #define EM2860_BOARD_GADMEI_UTV330 37
78 #define EM2861_BOARD_YAKUMO_MOVIE_MIXER 38
79 #define EM2861_BOARD_KWORLD_PVRTV_300U 39
80 #define EM2861_BOARD_PLEXTOR_PX_TV100U 40
81 #define EM2870_BOARD_KWORLD_350U 41
82 #define EM2870_BOARD_KWORLD_355U 42
83 #define EM2870_BOARD_TERRATEC_XS 43
84 #define EM2870_BOARD_TERRATEC_XS_MT2060 44
85 #define EM2870_BOARD_PINNACLE_PCTV_DVB 45
86 #define EM2870_BOARD_COMPRO_VIDEOMATE 46
87 #define EM2880_BOARD_KWORLD_DVB_305U 47
88 #define EM2880_BOARD_KWORLD_DVB_310U 48
89 #define EM2880_BOARD_MSI_DIGIVOX_AD 49
90 #define EM2880_BOARD_MSI_DIGIVOX_AD_II 50
91 #define EM2880_BOARD_TERRATEC_HYBRID_XS_FR 51
92 #define EM2881_BOARD_DNT_DA2_HYBRID 52
93 #define EM2881_BOARD_PINNACLE_HYBRID_PRO 53
94 #define EM2882_BOARD_KWORLD_VS_DVBT 54
95 #define EM2882_BOARD_TERRATEC_HYBRID_XS 55
96 #define EM2882_BOARD_PINNACLE_HYBRID_PRO 56
97 #define EM2883_BOARD_KWORLD_HYBRID_330U 57
98 #define EM2820_BOARD_COMPRO_VIDEOMATE_FORYOU 58
99 #define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850 60
100 #define EM2820_BOARD_PROLINK_PLAYTV_BOX4_USB2 61
101 #define EM2820_BOARD_GADMEI_TVR200 62
102 #define EM2860_BOARD_KAIOMY_TVNPC_U2 63
103 #define EM2860_BOARD_EASYCAP 64
104 #define EM2820_BOARD_IODATA_GVMVP_SZ 65
105 #define EM2880_BOARD_EMPIRE_DUAL_TV 66
106 #define EM2860_BOARD_TERRATEC_GRABBY 67
107 #define EM2860_BOARD_TERRATEC_AV350 68
108 #define EM2882_BOARD_KWORLD_ATSC_315U 69
109 #define EM2882_BOARD_EVGA_INDTUBE 70
110 #define EM2820_BOARD_SILVERCREST_WEBCAM 71
111 #define EM2861_BOARD_GADMEI_UTV330PLUS 72
112 #define EM2870_BOARD_REDDO_DVB_C_USB_BOX 73
113 #define EM2800_BOARD_VC211A 74
115 /* Limits minimum and default number of buffers */
116 #define EM28XX_MIN_BUF 4
117 #define EM28XX_DEF_BUF 8
119 /*Limits the max URB message size */
120 #define URB_MAX_CTRL_SIZE 80
122 /* Params for validated field */
123 #define EM28XX_BOARD_NOT_VALIDATED 1
124 #define EM28XX_BOARD_VALIDATED 0
126 /* Params for em28xx_cmd() audio */
127 #define EM28XX_START_AUDIO 1
128 #define EM28XX_STOP_AUDIO 0
130 /* maximum number of em28xx boards */
131 #define EM28XX_MAXBOARDS 4 /*FIXME: should be bigger */
133 /* maximum number of frames that can be queued */
134 #define EM28XX_NUM_FRAMES 5
135 /* number of frames that get used for v4l2_read() */
136 #define EM28XX_NUM_READ_FRAMES 2
138 /* number of buffers for isoc transfers */
139 #define EM28XX_NUM_BUFS 5
141 /* number of packets for each buffer
142 windows requests only 40 packets .. so we better do the same
143 this is what I found out for all alternate numbers there!
145 #define EM28XX_NUM_PACKETS 40
147 #define EM28XX_INTERLACED_DEFAULT 1
150 #define (use usbview if you want to get the other alternate number infos)
152 #define alternate number 2
153 #define Endpoint Address: 82
157 Max Packet Size: 1448
166 Max Packet Size: 3072
170 /* time to wait when stopping the isoc transfer */
171 #define EM28XX_URB_TIMEOUT \
172 msecs_to_jiffies(EM28XX_NUM_BUFS * EM28XX_NUM_PACKETS)
174 /* time in msecs to wait for i2c writes to finish */
175 #define EM2800_I2C_WRITE_TIMEOUT 20
183 enum em28xx_stream_state {
191 struct em28xx_usb_isoc_ctl {
192 /* max packet size of isoc transaction */
195 /* number of allocated urbs */
198 /* urb for isoc transfers */
201 /* transfer buffers for isoc transfer */
202 char **transfer_buffer;
204 /* Last buffer command and region */
206 int pos, size, pktsize;
208 /* Last field: ODD or EVEN? */
211 /* Stores incomplete commands */
215 /* Stores already requested buffers */
216 struct em28xx_buffer *vid_buf;
217 struct em28xx_buffer *vbi_buf;
219 /* Stores the number of received fields */
222 /* isoc urb callback */
223 int (*isoc_copy) (struct em28xx *dev, struct urb *urb);
227 /* Struct to enumberate video formats */
230 u32 fourcc; /* v4l2 format id */
235 /* buffer for one video frame */
236 struct em28xx_buffer {
237 /* common v4l buffer stuff -- must be first */
238 struct videobuf_buffer vb;
240 struct list_head frame;
245 struct em28xx_dmaqueue {
246 struct list_head active;
247 struct list_head queued;
249 wait_queue_head_t wq;
251 /* Counters to control buffer fill */
256 enum em28xx_io_method {
264 #define MAX_EM28XX_INPUT 4
265 enum enum28xx_itype {
266 EM28XX_VMUX_COMPOSITE1 = 1,
267 EM28XX_VMUX_COMPOSITE2,
268 EM28XX_VMUX_COMPOSITE3,
269 EM28XX_VMUX_COMPOSITE4,
271 EM28XX_VMUX_TELEVISION,
278 enum em28xx_ac97_mode {
281 EM28XX_AC97_SIGMATEL,
285 struct em28xx_audio_mode {
286 enum em28xx_ac97_mode ac97;
291 unsigned int has_audio:1;
293 unsigned int i2s_3rates:1;
294 unsigned int i2s_5rates:1;
297 /* em28xx has two audio inputs: tuner and line in.
298 However, on most devices, an auxiliary AC97 codec device is used.
299 The AC97 device may have several different inputs and outputs,
300 depending on their model. So, it is possible to use AC97 mixer to
301 address more than two different entries.
304 /* This is the only entry for em28xx tuner input */
305 EM28XX_AMUX_VIDEO, /* em28xx tuner, AC97 mixer Video */
307 EM28XX_AMUX_LINE_IN, /* AC97 mixer Line In */
309 /* Some less-common mixer setups */
310 EM28XX_AMUX_VIDEO2, /* em28xx Line in, AC97 mixer Video */
320 EM28XX_AOUT_MASTER = 1 << 0,
321 EM28XX_AOUT_LINE = 1 << 1,
322 EM28XX_AOUT_MONO = 1 << 2,
323 EM28XX_AOUT_LFE = 1 << 3,
324 EM28XX_AOUT_SURR = 1 << 4,
326 /* PCM IN Mixer - used by AC97_RECORD_SELECT register */
327 EM28XX_AOUT_PCM_IN = 1 << 7,
329 /* Bits 10-8 are used to indicate the PCM IN record select */
330 EM28XX_AOUT_PCM_MIC_PCM = 0 << 8,
331 EM28XX_AOUT_PCM_CD = 1 << 8,
332 EM28XX_AOUT_PCM_VIDEO = 2 << 8,
333 EM28XX_AOUT_PCM_AUX = 3 << 8,
334 EM28XX_AOUT_PCM_LINE = 4 << 8,
335 EM28XX_AOUT_PCM_STEREO = 5 << 8,
336 EM28XX_AOUT_PCM_MONO = 6 << 8,
337 EM28XX_AOUT_PCM_PHONE = 7 << 8,
340 static inline int ac97_return_record_select(int a_out)
342 return (a_out & 0x700) >> 8;
345 struct em28xx_reg_seq {
347 unsigned char val, mask;
351 struct em28xx_input {
352 enum enum28xx_itype type;
354 enum em28xx_amux amux;
355 enum em28xx_aout aout;
356 struct em28xx_reg_seq *gpio;
359 #define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
361 enum em28xx_decoder {
362 EM28XX_NODECODER = 0,
374 enum em28xx_adecoder {
375 EM28XX_NOADECODER = 0,
379 struct em28xx_board {
386 unsigned int tda9887_conf;
389 struct em28xx_reg_seq *dvb_gpio;
390 struct em28xx_reg_seq *suspend_gpio;
391 struct em28xx_reg_seq *tuner_gpio;
392 struct em28xx_reg_seq *mute_gpio;
394 unsigned int is_em2800:1;
395 unsigned int has_msp34xx:1;
396 unsigned int mts_firmware:1;
397 unsigned int max_range_640_480:1;
398 unsigned int has_dvb:1;
399 unsigned int has_snapshot_button:1;
400 unsigned int is_webcam:1;
401 unsigned int valid:1;
402 unsigned int has_ir_i2c:1;
404 unsigned char xclk, i2c_speed;
405 unsigned char radio_addr;
406 unsigned short tvaudio_addr;
408 enum em28xx_decoder decoder;
409 enum em28xx_adecoder adecoder;
411 struct em28xx_input input[MAX_EM28XX_INPUT];
412 struct em28xx_input radio;
413 struct ir_scancode_table *ir_codes;
416 struct em28xx_eeprom {
417 u32 id; /* 0x9567eb1a */
425 u16 string1, string2, string3;
431 enum em28xx_dev_state {
432 DEV_INITIALIZED = 0x01,
433 DEV_DISCONNECTED = 0x02,
434 DEV_MISCONFIGURED = 0x04,
437 #define EM28XX_AUDIO_BUFS 5
438 #define EM28XX_NUM_AUDIO_PACKETS 64
439 #define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */
440 #define EM28XX_CAPTURE_STREAM_EN 1
442 /* em28xx extensions */
443 #define EM28XX_AUDIO 0x10
444 #define EM28XX_DVB 0x20
446 /* em28xx resource types (used for res_get/res_lock etc */
447 #define EM28XX_RESOURCE_VIDEO 0x01
448 #define EM28XX_RESOURCE_VBI 0x02
450 struct em28xx_audio {
452 char *transfer_buffer[EM28XX_AUDIO_BUFS];
453 struct urb *urb[EM28XX_AUDIO_BUFS];
454 struct usb_device *udev;
455 unsigned int capture_transfer_done;
456 struct snd_pcm_substream *capture_pcm_substream;
458 unsigned int hwptr_done_capture;
459 struct snd_card *sndcard;
462 enum em28xx_stream_state capture_stream;
471 unsigned int resources;
473 struct videobuf_queue vb_vidq;
474 struct videobuf_queue vb_vbiq;
476 enum v4l2_buf_type type;
479 /* main device struct */
481 /* generic device properties */
482 char name[30]; /* name (including minor) of the device */
483 int model; /* index in the device_data struct */
484 int devno; /* marks the number of this device */
485 enum em28xx_chip_id chip_id;
487 struct v4l2_device v4l2_dev;
488 struct em28xx_board board;
490 /* Webcam specific fields */
491 enum em28xx_sensor em28xx_sensor;
492 int sensor_xres, sensor_yres;
495 /* Allows progressive (e. g. non-interlaced) mode */
498 /* Vinmode/Vinctl used at the driver */
501 unsigned int has_audio_class:1;
502 unsigned int has_alsa_audio:1;
504 struct em28xx_fmt *format;
506 struct em28xx_IR *ir;
508 /* Some older em28xx chips needs a waiting time after writing */
509 unsigned int wait_after_write;
511 struct list_head devlist;
513 u32 i2s_speed; /* I2S speed for audio digital stream */
515 struct em28xx_audio_mode audio_mode;
517 int tuner_type; /* type of the tuner */
518 int tuner_addr; /* tuner address */
521 struct i2c_adapter i2c_adap;
522 struct i2c_client i2c_client;
523 /* video for linux */
524 int users; /* user count for exclusive use */
525 struct video_device *vdev; /* video for linux device struct */
526 v4l2_std_id norm; /* selected tv norm */
527 int ctl_freq; /* selected frequency */
528 unsigned int ctl_input; /* selected input */
529 unsigned int ctl_ainput;/* selected audio input */
530 unsigned int ctl_aoutput;/* selected audio output */
533 /* frame properties */
534 int width; /* current frame width */
535 int height; /* current frame height */
536 unsigned hscale; /* horizontal scale factor (see datasheet) */
537 unsigned vscale; /* vertical scale factor (see datasheet) */
538 int interlaced; /* 1=interlace fileds, 0=just top fileds */
539 unsigned int video_bytesread; /* Number of bytes read */
541 unsigned long hash; /* eeprom hash - for boards with generic ID */
542 unsigned long i2c_hash; /* i2c devicelist hash -
543 for boards with generic ID */
545 struct em28xx_audio adev;
548 enum em28xx_dev_state state;
549 enum em28xx_io_method io;
551 /* vbi related state tracking */
554 unsigned char cur_field;
557 struct work_struct request_module_wk;
561 struct mutex ctrl_urb_lock; /* protects urb_buf */
562 /* spinlock_t queue_lock; */
563 struct list_head inqueue, outqueue;
564 wait_queue_head_t open, wait_frame, wait_stream;
565 struct video_device *vbi_dev;
566 struct video_device *radio_dev;
568 /* resources in use */
569 unsigned int resources;
571 unsigned char eedata[256];
573 /* Isoc control struct */
574 struct em28xx_dmaqueue vidq;
575 struct em28xx_dmaqueue vbiq;
576 struct em28xx_usb_isoc_ctl isoc_ctl;
580 struct usb_device *udev; /* the usb device */
581 int alt; /* alternate */
582 int max_pkt_size; /* max packet size of isoc transaction */
583 int num_alt; /* Number of alternative settings */
584 unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
585 struct urb *urb[EM28XX_NUM_BUFS]; /* urb for isoc transfers */
586 char *transfer_buffer[EM28XX_NUM_BUFS]; /* transfer buffers for isoc
588 char urb_buf[URB_MAX_CTRL_SIZE]; /* urb control msg buffer */
590 /* helper funcs that call usb_control_msg */
591 int (*em28xx_write_regs) (struct em28xx *dev, u16 reg,
593 int (*em28xx_read_reg) (struct em28xx *dev, u16 reg);
594 int (*em28xx_read_reg_req_len) (struct em28xx *dev, u8 req, u16 reg,
596 int (*em28xx_write_regs_req) (struct em28xx *dev, u8 req, u16 reg,
598 int (*em28xx_read_reg_req) (struct em28xx *dev, u8 req, u16 reg);
600 enum em28xx_mode mode;
602 /* register numbers for GPO/GPIO registers */
603 u16 reg_gpo_num, reg_gpio_num;
605 /* Caches GPO and GPIO registers */
606 unsigned char reg_gpo, reg_gpio;
608 /* Snapshot button */
609 char snapshot_button_path[30]; /* path of the input dev */
610 struct input_dev *sbutton_input_dev;
611 struct delayed_work sbutton_query_work;
613 struct em28xx_dvb *dvb;
615 /* I2C keyboard data */
616 struct IR_i2c_init_data init_data;
620 struct list_head next;
623 int (*init)(struct em28xx *);
624 int (*fini)(struct em28xx *);
627 /* Provided by em28xx-i2c.c */
628 void em28xx_do_i2c_scan(struct em28xx *dev);
629 int em28xx_i2c_register(struct em28xx *dev);
630 int em28xx_i2c_unregister(struct em28xx *dev);
632 /* Provided by em28xx-core.c */
634 u32 em28xx_request_buffers(struct em28xx *dev, u32 count);
635 void em28xx_queue_unusedframes(struct em28xx *dev);
636 void em28xx_release_buffers(struct em28xx *dev);
638 int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
640 int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
641 int em28xx_read_reg(struct em28xx *dev, u16 reg);
642 int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
644 int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
645 int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val);
646 int em28xx_write_reg_bits(struct em28xx *dev, u16 reg, u8 val,
649 int em28xx_read_ac97(struct em28xx *dev, u8 reg);
650 int em28xx_write_ac97(struct em28xx *dev, u8 reg, u16 val);
652 int em28xx_audio_analog_set(struct em28xx *dev);
653 int em28xx_audio_setup(struct em28xx *dev);
655 int em28xx_colorlevels_set_default(struct em28xx *dev);
656 int em28xx_capture_start(struct em28xx *dev, int start);
657 int em28xx_vbi_supported(struct em28xx *dev);
658 int em28xx_set_outfmt(struct em28xx *dev);
659 int em28xx_resolution_set(struct em28xx *dev);
660 int em28xx_set_alternate(struct em28xx *dev);
661 int em28xx_init_isoc(struct em28xx *dev, int max_packets,
662 int num_bufs, int max_pkt_size,
663 int (*isoc_copy) (struct em28xx *dev, struct urb *urb));
664 void em28xx_uninit_isoc(struct em28xx *dev);
665 int em28xx_isoc_dvb_max_packetsize(struct em28xx *dev);
666 int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
667 int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
668 void em28xx_wake_i2c(struct em28xx *dev);
669 void em28xx_remove_from_devlist(struct em28xx *dev);
670 void em28xx_add_into_devlist(struct em28xx *dev);
671 int em28xx_register_extension(struct em28xx_ops *dev);
672 void em28xx_unregister_extension(struct em28xx_ops *dev);
673 void em28xx_init_extension(struct em28xx *dev);
674 void em28xx_close_extension(struct em28xx *dev);
676 /* Provided by em28xx-video.c */
677 int em28xx_register_analog_devices(struct em28xx *dev);
678 void em28xx_release_analog_resources(struct em28xx *dev);
680 /* Provided by em28xx-cards.c */
681 extern int em2800_variant_detect(struct usb_device *udev, int model);
682 extern void em28xx_pre_card_setup(struct em28xx *dev);
683 extern void em28xx_card_setup(struct em28xx *dev);
684 extern struct em28xx_board em28xx_boards[];
685 extern struct usb_device_id em28xx_id_table[];
686 extern const unsigned int em28xx_bcount;
687 void em28xx_register_i2c_ir(struct em28xx *dev);
688 int em28xx_tuner_callback(void *ptr, int component, int command, int arg);
689 void em28xx_release_resources(struct em28xx *dev);
691 /* Provided by em28xx-input.c */
692 int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
693 int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
694 int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key,
696 void em28xx_register_snapshot_button(struct em28xx *dev);
697 void em28xx_deregister_snapshot_button(struct em28xx *dev);
699 int em28xx_ir_init(struct em28xx *dev);
700 int em28xx_ir_fini(struct em28xx *dev);
702 /* Provided by em28xx-vbi.c */
703 extern struct videobuf_queue_ops em28xx_vbi_qops;
707 #define em28xx_err(fmt, arg...) do {\
708 printk(KERN_ERR fmt , ##arg); } while (0)
710 #define em28xx_errdev(fmt, arg...) do {\
711 printk(KERN_ERR "%s: "fmt,\
712 dev->name , ##arg); } while (0)
714 #define em28xx_info(fmt, arg...) do {\
715 printk(KERN_INFO "%s: "fmt,\
716 dev->name , ##arg); } while (0)
717 #define em28xx_warn(fmt, arg...) do {\
718 printk(KERN_WARNING "%s: "fmt,\
719 dev->name , ##arg); } while (0)
721 static inline int em28xx_compression_disable(struct em28xx *dev)
723 /* side effect of disabling scaler and mixer */
724 return em28xx_write_reg(dev, EM28XX_R26_COMPR, 0x00);
727 static inline int em28xx_contrast_get(struct em28xx *dev)
729 return em28xx_read_reg(dev, EM28XX_R20_YGAIN) & 0x1f;
732 static inline int em28xx_brightness_get(struct em28xx *dev)
734 return em28xx_read_reg(dev, EM28XX_R21_YOFFSET);
737 static inline int em28xx_saturation_get(struct em28xx *dev)
739 return em28xx_read_reg(dev, EM28XX_R22_UVGAIN) & 0x1f;
742 static inline int em28xx_u_balance_get(struct em28xx *dev)
744 return em28xx_read_reg(dev, EM28XX_R23_UOFFSET);
747 static inline int em28xx_v_balance_get(struct em28xx *dev)
749 return em28xx_read_reg(dev, EM28XX_R24_VOFFSET);
752 static inline int em28xx_gamma_get(struct em28xx *dev)
754 return em28xx_read_reg(dev, EM28XX_R14_GAMMA) & 0x3f;
757 static inline int em28xx_contrast_set(struct em28xx *dev, s32 val)
760 return em28xx_write_regs(dev, EM28XX_R20_YGAIN, &tmp, 1);
763 static inline int em28xx_brightness_set(struct em28xx *dev, s32 val)
766 return em28xx_write_regs(dev, EM28XX_R21_YOFFSET, &tmp, 1);
769 static inline int em28xx_saturation_set(struct em28xx *dev, s32 val)
772 return em28xx_write_regs(dev, EM28XX_R22_UVGAIN, &tmp, 1);
775 static inline int em28xx_u_balance_set(struct em28xx *dev, s32 val)
778 return em28xx_write_regs(dev, EM28XX_R23_UOFFSET, &tmp, 1);
781 static inline int em28xx_v_balance_set(struct em28xx *dev, s32 val)
784 return em28xx_write_regs(dev, EM28XX_R24_VOFFSET, &tmp, 1);
787 static inline int em28xx_gamma_set(struct em28xx *dev, s32 val)
790 return em28xx_write_regs(dev, EM28XX_R14_GAMMA, &tmp, 1);
793 /*FIXME: maxw should be dependent of alt mode */
794 static inline unsigned int norm_maxw(struct em28xx *dev)
796 if (dev->board.is_webcam)
797 return dev->sensor_xres;
799 if (dev->board.max_range_640_480 || dev->board.is_em2800)
805 static inline unsigned int norm_maxh(struct em28xx *dev)
807 if (dev->board.is_webcam)
808 return dev->sensor_yres;
810 if (dev->board.max_range_640_480)
813 return (dev->norm & V4L2_STD_625_50) ? 576 : 480;