diff options
Diffstat (limited to 'drivers/usb/gadget/function/u_audio.h')
| -rw-r--r-- | drivers/usb/gadget/function/u_audio.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/usb/gadget/function/u_audio.h b/drivers/usb/gadget/function/u_audio.h index a218cdf771fe..001a79a46022 100644 --- a/drivers/usb/gadget/function/u_audio.h +++ b/drivers/usb/gadget/function/u_audio.h @@ -19,16 +19,30 @@ */ #define FBACK_SLOW_MAX 250 +/* Feature Unit parameters */ +struct uac_fu_params { + int id; /* Feature Unit ID */ + + bool mute_present; /* mute control enable */ + + bool volume_present; /* volume control enable */ + s16 volume_min; /* min volume in 1/256 dB */ + s16 volume_max; /* max volume in 1/256 dB */ + s16 volume_res; /* volume resolution in 1/256 dB */ +}; + struct uac_params { /* playback */ int p_chmask; /* channel mask */ int p_srate; /* rate in Hz */ int p_ssize; /* sample size */ + struct uac_fu_params p_fu; /* Feature Unit parameters */ /* capture */ int c_chmask; /* channel mask */ int c_srate; /* rate in Hz */ int c_ssize; /* sample size */ + struct uac_fu_params c_fu; /* Feature Unit parameters */ int req_number; /* number of preallocated requests */ int fb_max; /* upper frequency drift feedback limit per-mil */ @@ -49,6 +63,9 @@ struct g_audio { /* Max packet size for all out_ep possible speeds */ unsigned int out_ep_maxpsize; + /* Notify UAC driver about control change */ + int (*notify)(struct g_audio *g_audio, int unit_id, int cs); + /* The ALSA Sound Card it represents on the USB-Client side */ struct snd_uac_chip *uac; @@ -94,4 +111,9 @@ void u_audio_stop_capture(struct g_audio *g_audio); int u_audio_start_playback(struct g_audio *g_audio); void u_audio_stop_playback(struct g_audio *g_audio); +int u_audio_get_volume(struct g_audio *g_audio, int playback, s16 *val); +int u_audio_set_volume(struct g_audio *g_audio, int playback, s16 val); +int u_audio_get_mute(struct g_audio *g_audio, int playback, int *val); +int u_audio_set_mute(struct g_audio *g_audio, int playback, int val); + #endif /* __U_AUDIO_H */ |