diff options
Diffstat (limited to 'drivers/staging/greybus/audio_codec.h')
| -rw-r--r-- | drivers/staging/greybus/audio_codec.h | 283 |
1 files changed, 283 insertions, 0 deletions
diff --git a/drivers/staging/greybus/audio_codec.h b/drivers/staging/greybus/audio_codec.h new file mode 100644 index 000000000000..ca027bd99ad7 --- /dev/null +++ b/drivers/staging/greybus/audio_codec.h @@ -0,0 +1,283 @@ +/* + * Greybus audio driver + * Copyright 2015 Google Inc. + * Copyright 2015 Linaro Ltd. + * + * Released under the GPLv2 only. + */ + +#ifndef __LINUX_GBAUDIO_CODEC_H +#define __LINUX_GBAUDIO_CODEC_H + +#include <sound/soc.h> +#include <sound/jack.h> + +#include "greybus.h" +#include "greybus_protocols.h" + +#define NAME_SIZE 32 +#define MAX_DAIS 2 /* APB1, APB2 */ + +enum { + APB1_PCM = 0, + APB2_PCM, + NUM_CODEC_DAIS, +}; + +enum gbcodec_reg_index { + GBCODEC_CTL_REG, + GBCODEC_MUTE_REG, + GBCODEC_PB_LVOL_REG, + GBCODEC_PB_RVOL_REG, + GBCODEC_CAP_LVOL_REG, + GBCODEC_CAP_RVOL_REG, + GBCODEC_APB1_MUX_REG, + GBCODEC_APB2_MUX_REG, + GBCODEC_REG_COUNT +}; + +/* device_type should be same as defined in audio.h (Android media layer) */ +enum { + GBAUDIO_DEVICE_NONE = 0x0, + /* reserved bits */ + GBAUDIO_DEVICE_BIT_IN = 0x80000000, + GBAUDIO_DEVICE_BIT_DEFAULT = 0x40000000, + /* output devices */ + GBAUDIO_DEVICE_OUT_SPEAKER = 0x2, + GBAUDIO_DEVICE_OUT_WIRED_HEADSET = 0x4, + GBAUDIO_DEVICE_OUT_WIRED_HEADPHONE = 0x8, + /* input devices */ + GBAUDIO_DEVICE_IN_BUILTIN_MIC = GBAUDIO_DEVICE_BIT_IN | 0x4, + GBAUDIO_DEVICE_IN_WIRED_HEADSET = GBAUDIO_DEVICE_BIT_IN | 0x10, +}; + +/* bit 0-SPK, 1-HP, 2-DAC, + * 4-MIC, 5-HSMIC, 6-MIC2 + */ +#define GBCODEC_CTL_REG_DEFAULT 0x00 + +/* bit 0,1 - APB1-PB-L/R + * bit 2,3 - APB2-PB-L/R + * bit 4,5 - APB1-Cap-L/R + * bit 6,7 - APB2-Cap-L/R + */ +#define GBCODEC_MUTE_REG_DEFAULT 0x00 + +/* 0-127 steps */ +#define GBCODEC_PB_VOL_REG_DEFAULT 0x00 +#define GBCODEC_CAP_VOL_REG_DEFAULT 0x00 + +/* bit 0,1,2 - PB stereo, left, right + * bit 8,9,10 - Cap stereo, left, right + */ +#define GBCODEC_APB1_MUX_REG_DEFAULT 0x00 +#define GBCODEC_APB2_MUX_REG_DEFAULT 0x00 + +#define GBCODEC_JACK_MASK 0x0000FFFF +#define GBCODEC_JACK_BUTTON_MASK 0xFFFF0000 + +static const u8 gbcodec_reg_defaults[GBCODEC_REG_COUNT] = { + GBCODEC_CTL_REG_DEFAULT, + GBCODEC_MUTE_REG_DEFAULT, + GBCODEC_PB_VOL_REG_DEFAULT, + GBCODEC_PB_VOL_REG_DEFAULT, + GBCODEC_CAP_VOL_REG_DEFAULT, + GBCODEC_CAP_VOL_REG_DEFAULT, + GBCODEC_APB1_MUX_REG_DEFAULT, + GBCODEC_APB2_MUX_REG_DEFAULT, +}; + +enum gbaudio_codec_state { + GBAUDIO_CODEC_SHUTDOWN = 0, + GBAUDIO_CODEC_STARTUP, + GBAUDIO_CODEC_HWPARAMS, + GBAUDIO_CODEC_PREPARE, + GBAUDIO_CODEC_START, + GBAUDIO_CODEC_STOP, +}; + +struct gbaudio_stream_params { + int state; + u8 sig_bits, channels; + uint32_t format, rate; +}; + +struct gbaudio_codec_dai { + int id; + /* runtime params for playback/capture streams */ + struct gbaudio_stream_params params[2]; + struct list_head list; +}; + +struct gbaudio_codec_info { + struct device *dev; + struct snd_soc_codec *codec; + struct list_head module_list; + /* to maintain runtime stream params for each DAI */ + struct list_head dai_list; + struct mutex lock; + u8 reg[GBCODEC_REG_COUNT]; +}; + +struct gbaudio_widget { + __u8 id; + const char *name; + struct list_head list; +}; + +struct gbaudio_control { + __u8 id; + char *name; + char *wname; + const char * const *texts; + int items; + struct list_head list; +}; + +struct gbaudio_data_connection { + int id; + __le16 data_cport; + struct gb_connection *connection; + struct list_head list; + /* maintain runtime state for playback/capture stream */ + int state[2]; +}; + +/* stream direction */ +#define GB_PLAYBACK BIT(0) +#define GB_CAPTURE BIT(1) + +enum gbaudio_module_state { + GBAUDIO_MODULE_OFF = 0, + GBAUDIO_MODULE_ON, +}; + +struct gbaudio_module_info { + /* module info */ + struct device *dev; + int dev_id; /* check if it should be bundle_id/hd_cport_id */ + int vid; + int pid; + int slot; + int type; + int set_uevent; + char vstr[NAME_SIZE]; + char pstr[NAME_SIZE]; + struct list_head list; + /* need to share this info to above user space */ + int manager_id; + char name[NAME_SIZE]; + unsigned int ip_devices; + unsigned int op_devices; + + /* jack related */ + char jack_name[NAME_SIZE]; + char button_name[NAME_SIZE]; + int jack_type; + int jack_mask; + int button_mask; + int button_status; + struct snd_soc_jack headset_jack; + struct snd_soc_jack button_jack; + + /* connection info */ + struct gb_connection *mgmt_connection; + size_t num_data_connections; + struct list_head data_list; + + /* topology related */ + int num_dais; + int num_controls; + int num_dapm_widgets; + int num_dapm_routes; + unsigned long dai_offset; + unsigned long widget_offset; + unsigned long control_offset; + unsigned long route_offset; + struct snd_kcontrol_new *controls; + struct snd_soc_dapm_widget *dapm_widgets; + struct snd_soc_dapm_route *dapm_routes; + struct snd_soc_dai_driver *dais; + + struct list_head widget_list; + struct list_head ctl_list; + struct list_head widget_ctl_list; + + struct gb_audio_topology *topology; +}; + +int gbaudio_tplg_parse_data(struct gbaudio_module_info *module, + struct gb_audio_topology *tplg_data); +void gbaudio_tplg_release(struct gbaudio_module_info *module); + +int gbaudio_module_update(struct gbaudio_codec_info *codec, + struct snd_soc_dapm_widget *w, + struct gbaudio_module_info *module, + int enable); +int gbaudio_register_module(struct gbaudio_module_info *module); +void gbaudio_unregister_module(struct gbaudio_module_info *module); + +/* protocol related */ +extern int gb_audio_gb_get_topology(struct gb_connection *connection, + struct gb_audio_topology **topology); +extern int gb_audio_gb_get_control(struct gb_connection *connection, + u8 control_id, u8 index, + struct gb_audio_ctl_elem_value *value); +extern int gb_audio_gb_set_control(struct gb_connection *connection, + u8 control_id, u8 index, + struct gb_audio_ctl_elem_value *value); +extern int gb_audio_gb_enable_widget(struct gb_connection *connection, + u8 widget_id); +extern int gb_audio_gb_disable_widget(struct gb_connection *connection, + u8 widget_id); +extern int gb_audio_gb_get_pcm(struct gb_connection *connection, + u16 data_cport, uint32_t *format, + uint32_t *rate, u8 *channels, + u8 *sig_bits); +extern int gb_audio_gb_set_pcm(struct gb_connection *connection, + u16 data_cport, uint32_t format, + uint32_t rate, u8 channels, + u8 sig_bits); +extern int gb_audio_gb_set_tx_data_size(struct gb_connection *connection, + u16 data_cport, u16 size); +extern int gb_audio_gb_activate_tx(struct gb_connection *connection, + u16 data_cport); +extern int gb_audio_gb_deactivate_tx(struct gb_connection *connection, + u16 data_cport); +extern int gb_audio_gb_set_rx_data_size(struct gb_connection *connection, + u16 data_cport, u16 size); +extern int gb_audio_gb_activate_rx(struct gb_connection *connection, + u16 data_cport); +extern int gb_audio_gb_deactivate_rx(struct gb_connection *connection, + u16 data_cport); +extern int gb_audio_apbridgea_set_config(struct gb_connection *connection, + __u16 i2s_port, __u32 format, + __u32 rate, __u32 mclk_freq); +extern int gb_audio_apbridgea_register_cport(struct gb_connection *connection, + __u16 i2s_port, __u16 cportid, + __u8 direction); +extern int gb_audio_apbridgea_unregister_cport(struct gb_connection *connection, + __u16 i2s_port, __u16 cportid, + __u8 direction); +extern int gb_audio_apbridgea_set_tx_data_size(struct gb_connection *connection, + __u16 i2s_port, __u16 size); +extern int gb_audio_apbridgea_prepare_tx(struct gb_connection *connection, + __u16 i2s_port); +extern int gb_audio_apbridgea_start_tx(struct gb_connection *connection, + __u16 i2s_port, __u64 timestamp); +extern int gb_audio_apbridgea_stop_tx(struct gb_connection *connection, + __u16 i2s_port); +extern int gb_audio_apbridgea_shutdown_tx(struct gb_connection *connection, + __u16 i2s_port); +extern int gb_audio_apbridgea_set_rx_data_size(struct gb_connection *connection, + __u16 i2s_port, __u16 size); +extern int gb_audio_apbridgea_prepare_rx(struct gb_connection *connection, + __u16 i2s_port); +extern int gb_audio_apbridgea_start_rx(struct gb_connection *connection, + __u16 i2s_port); +extern int gb_audio_apbridgea_stop_rx(struct gb_connection *connection, + __u16 i2s_port); +extern int gb_audio_apbridgea_shutdown_rx(struct gb_connection *connection, + __u16 i2s_port); + +#endif /* __LINUX_GBAUDIO_CODEC_H */ |