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alistair23-linux/drivers/staging/greybus/audio_codec.h
Vaibhav Agarwal 96249da9ce staging: greybus: audio: Cleanup junk codec registers 
Dummy codec register were initially added while populating dummy codec
mixer controls until module topology parser was available. Now, these
dummy registers are nowhere used and thus can be safely removed.

Since ASoC framework requires a valid callback for both read & write
register APIS, currently empty placeholders are kept to avoid panic.

Later, register mapping logic can be defined:
1. Assuming fixed number of maximum modules connected and register bits
corresponds to basic info of each module OR
2. With a logic to dynamically grow register_cache_size based on codec
modules added/removed.

Signed-off-by: Vaibhav Agarwal <vaibhav.agarwal@linaro.org>
Signed-off-by: Vaibhav Agarwal <vaibhav.sr@gmail.com>
Acked-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-19 11:08:00 +01:00

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/*
* 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,
};
/* 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,
};
#define GBCODEC_JACK_MASK 0x0000FFFF
#define GBCODEC_JACK_BUTTON_MASK 0xFFFF0000
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;
};
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 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 */
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