drivers/staging/greybus/audio_codec.h

   1 /*
   2  * Greybus audio driver
   3  * Copyright 2015 Google Inc.
   4  * Copyright 2015 Linaro Ltd.
   5  *
   6  * Released under the GPLv2 only.
   7  */
   8
   9 #ifndef __LINUX_GBAUDIO_CODEC_H
  10 #define __LINUX_GBAUDIO_CODEC_H
  11
  12 #include <sound/soc.h>
  13
  14 #include "greybus.h"
  15 #include "greybus_protocols.h"
  16
  17 #define NAME_SIZE       32
  18 #define MAX_DAIS        2       /* APB1, APB2 */
  19
  20 enum {
  21         APB1_PCM = 0,
  22         APB2_PCM,
  23         NUM_CODEC_DAIS,
  24 };
  25
  26 enum gbcodec_reg_index {
  27         GBCODEC_CTL_REG,
  28         GBCODEC_MUTE_REG,
  29         GBCODEC_PB_LVOL_REG,
  30         GBCODEC_PB_RVOL_REG,
  31         GBCODEC_CAP_LVOL_REG,
  32         GBCODEC_CAP_RVOL_REG,
  33         GBCODEC_APB1_MUX_REG,
  34         GBCODEC_APB2_MUX_REG,
  35         GBCODEC_REG_COUNT
  36 };
  37
  38 /* bit 0-SPK, 1-HP, 2-DAC,
  39  * 4-MIC, 5-HSMIC, 6-MIC2
  40  */
  41 #define GBCODEC_CTL_REG_DEFAULT         0x00
  42
  43 /* bit 0,1 - APB1-PB-L/R
  44  * bit 2,3 - APB2-PB-L/R
  45  * bit 4,5 - APB1-Cap-L/R
  46  * bit 6,7 - APB2-Cap-L/R
  47  */
  48 #define GBCODEC_MUTE_REG_DEFAULT        0x00
  49
  50 /* 0-127 steps */
  51 #define GBCODEC_PB_VOL_REG_DEFAULT      0x00
  52 #define GBCODEC_CAP_VOL_REG_DEFAULT     0x00
  53
  54 /* bit 0,1,2 - PB stereo, left, right
  55  * bit 8,9,10 - Cap stereo, left, right
  56  */
  57 #define GBCODEC_APB1_MUX_REG_DEFAULT    0x00
  58 #define GBCODEC_APB2_MUX_REG_DEFAULT    0x00
  59
  60 static const u8 gbcodec_reg_defaults[GBCODEC_REG_COUNT] = {
  61         GBCODEC_CTL_REG_DEFAULT,
  62         GBCODEC_MUTE_REG_DEFAULT,
  63         GBCODEC_PB_VOL_REG_DEFAULT,
  64         GBCODEC_PB_VOL_REG_DEFAULT,
  65         GBCODEC_CAP_VOL_REG_DEFAULT,
  66         GBCODEC_CAP_VOL_REG_DEFAULT,
  67         GBCODEC_APB1_MUX_REG_DEFAULT,
  68         GBCODEC_APB2_MUX_REG_DEFAULT,
  69 };
  70
  71 struct gbaudio_widget {
  72         __u8 id;
  73         const char *name;
  74         struct list_head list;
  75 };
  76
  77 struct gbaudio_control {
  78         __u8 id;
  79         char *name;
  80         const char * const *texts;
  81         struct list_head list;
  82 };
  83
  84 struct gbaudio_dai {
  85         __le16 data_cport;
  86         char name[NAME_SIZE];
  87         /* DAI users */
  88         atomic_t users;
  89         struct gb_connection *connection;
  90         struct list_head list;
  91 };
  92
  93 struct gbaudio_codec_info {
  94         /* module info */
  95         int dev_id;     /* check if it should be bundle_id/hd_cport_id */
  96         int vid;
  97         int pid;
  98         int slot;
  99         int type;
 100         int dai_added;
 101         int codec_registered;
 102         int set_uevent;
 103         char vstr[NAME_SIZE];
 104         char pstr[NAME_SIZE];
 105         struct list_head list;
 106         struct gb_audio_topology *topology;
 107         /* need to share this info to above user space */
 108         int manager_id;
 109         char name[NAME_SIZE];
 110
 111         /*
 112          * there can be a rece condition between gb_audio_disconnect()
 113          * and dai->trigger from above ASoC layer.
 114          * To avoid any deadlock over codec_info->lock, atomic variable
 115          * is used.
 116          */
 117         atomic_t is_connected;
 118         struct mutex lock;
 119
 120         /* soc related data */
 121         struct snd_soc_codec *codec;
 122         struct device *dev;
 123         u8 reg[GBCODEC_REG_COUNT];
 124
 125         /* dai_link related */
 126         char card_name[NAME_SIZE];
 127         char *dailink_name[MAX_DAIS];
 128         int num_dai_links;
 129
 130         struct gb_connection *mgmt_connection;
 131         size_t num_data_connections;
 132         /* topology related */
 133         int num_dais;
 134         int num_kcontrols;
 135         int num_dapm_widgets;
 136         int num_dapm_routes;
 137         unsigned long dai_offset;
 138         unsigned long widget_offset;
 139         unsigned long control_offset;
 140         unsigned long route_offset;
 141         struct snd_kcontrol_new *kctls;
 142         struct snd_soc_dapm_widget *widgets;
 143         struct snd_soc_dapm_route *routes;
 144         struct snd_soc_dai_driver *dais;
 145
 146         /* lists */
 147         struct list_head dai_list;
 148         struct list_head widget_list;
 149         struct list_head codec_ctl_list;
 150         struct list_head widget_ctl_list;
 151 };
 152
 153 struct gbaudio_dai *gbaudio_find_dai(struct gbaudio_codec_info *gbcodec,
 154                                      int data_cport, const char *name);
 155 int gbaudio_tplg_parse_data(struct gbaudio_codec_info *gbcodec,
 156                                struct gb_audio_topology *tplg_data);
 157 void gbaudio_tplg_release(struct gbaudio_codec_info *gbcodec);
 158
 159 /* protocol related */
 160 extern int gb_audio_gb_get_topology(struct gb_connection *connection,
 161                                     struct gb_audio_topology **topology);
 162 extern int gb_audio_gb_get_control(struct gb_connection *connection,
 163                                    uint8_t control_id, uint8_t index,
 164                                    struct gb_audio_ctl_elem_value *value);
 165 extern int gb_audio_gb_set_control(struct gb_connection *connection,
 166                                    uint8_t control_id, uint8_t index,
 167                                    struct gb_audio_ctl_elem_value *value);
 168 extern int gb_audio_gb_enable_widget(struct gb_connection *connection,
 169                                      uint8_t widget_id);
 170 extern int gb_audio_gb_disable_widget(struct gb_connection *connection,
 171                                       uint8_t widget_id);
 172 extern int gb_audio_gb_get_pcm(struct gb_connection *connection,
 173                                uint16_t data_cport, uint32_t *format,
 174                                uint32_t *rate, uint8_t *channels,
 175                                uint8_t *sig_bits);
 176 extern int gb_audio_gb_set_pcm(struct gb_connection *connection,
 177                                uint16_t data_cport, uint32_t format,
 178                                uint32_t rate, uint8_t channels,
 179                                uint8_t sig_bits);
 180 extern int gb_audio_gb_set_tx_data_size(struct gb_connection *connection,
 181                                         uint16_t data_cport, uint16_t size);
 182 extern int gb_audio_gb_get_tx_delay(struct gb_connection *connection,
 183                                     uint16_t data_cport, uint32_t *delay);
 184 extern int gb_audio_gb_activate_tx(struct gb_connection *connection,
 185                                    uint16_t data_cport);
 186 extern int gb_audio_gb_deactivate_tx(struct gb_connection *connection,
 187                                      uint16_t data_cport);
 188 extern int gb_audio_gb_set_rx_data_size(struct gb_connection *connection,
 189                                         uint16_t data_cport, uint16_t size);
 190 extern int gb_audio_gb_get_rx_delay(struct gb_connection *connection,
 191                                     uint16_t data_cport, uint32_t *delay);
 192 extern int gb_audio_gb_activate_rx(struct gb_connection *connection,
 193                                    uint16_t data_cport);
 194 extern int gb_audio_gb_deactivate_rx(struct gb_connection *connection,
 195                                      uint16_t data_cport);
 196 extern int gb_audio_apbridgea_set_config(struct gb_connection *connection,
 197                                          __u16 i2s_port, __u32 format,
 198                                          __u32 rate, __u32 mclk_freq);
 199 extern int gb_audio_apbridgea_register_cport(struct gb_connection *connection,
 200                                              __u16 i2s_port, __u16 cportid);
 201 extern int gb_audio_apbridgea_unregister_cport(struct gb_connection *connection,
 202                                                __u16 i2s_port, __u16 cportid);
 203 extern int gb_audio_apbridgea_set_tx_data_size(struct gb_connection *connection,
 204                                                __u16 i2s_port, __u16 size);
 205 extern int gb_audio_apbridgea_get_tx_delay(struct gb_connection *connection,
 206                                            __u16 i2s_port, __u32 *delay);
 207 extern int gb_audio_apbridgea_start_tx(struct gb_connection *connection,
 208                                        __u16 i2s_port, __u64 timestamp);
 209 extern int gb_audio_apbridgea_stop_tx(struct gb_connection *connection,
 210                                       __u16 i2s_port);
 211 extern int gb_audio_apbridgea_set_rx_data_size(struct gb_connection *connection,
 212                                                __u16 i2s_port, __u16 size);
 213 extern int gb_audio_apbridgea_get_rx_delay(struct gb_connection *connection,
 214                                            __u16 i2s_port, __u32 *delay);
 215 extern int gb_audio_apbridgea_start_rx(struct gb_connection *connection,
 216                                        __u16 i2s_port);
 217 extern int gb_audio_apbridgea_stop_rx(struct gb_connection *connection,
 218                                       __u16 i2s_port);
 219
 220 #endif /* __LINUX_GBAUDIO_CODEC_H */