diff options
Diffstat (limited to 'drivers/usb/class/audio.h')
| -rw-r--r-- | drivers/usb/class/audio.h | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/drivers/usb/class/audio.h b/drivers/usb/class/audio.h new file mode 100644 index 000000000000..45916eb12103 --- /dev/null +++ b/drivers/usb/class/audio.h @@ -0,0 +1,110 @@ +#define CS_AUDIO_UNDEFINED 0x20 +#define CS_AUDIO_DEVICE 0x21 +#define CS_AUDIO_CONFIGURATION 0x22 +#define CS_AUDIO_STRING 0x23 +#define CS_AUDIO_INTERFACE 0x24 +#define CS_AUDIO_ENDPOINT 0x25 + +#define HEADER 0x01 +#define INPUT_TERMINAL 0x02 +#define OUTPUT_TERMINAL 0x03 +#define MIXER_UNIT 0x04 +#define SELECTOR_UNIT 0x05 +#define FEATURE_UNIT 0x06 +#define PROCESSING_UNIT 0x07 +#define EXTENSION_UNIT 0x08 + +#define AS_GENERAL 0x01 +#define FORMAT_TYPE 0x02 +#define FORMAT_SPECIFIC 0x03 + +#define EP_GENERAL 0x01 + +#define MAX_CHAN 9 +#define MAX_FREQ 16 +#define MAX_IFACE 8 +#define MAX_FORMAT 8 +#define MAX_ALT 32 /* Sorry, we need quite a few for the Philips webcams */ + +struct usb_audio_terminal +{ + u8 flags; + u8 assoc; + u16 type; /* Mic etc */ + u8 channels; + u8 source; + u16 chancfg; +}; + +struct usb_audio_format +{ + u8 type; + u8 channels; + u8 num_freq; + u8 sfz; + u8 bits; + u16 freq[MAX_FREQ]; +}; + +struct usb_audio_interface +{ + u8 terminal; + u8 delay; + u16 num_formats; + u16 format_type; + u8 flags; + u8 idleconf; /* Idle config */ +#define AU_IFACE_FOUND 1 + struct usb_audio_format format[MAX_FORMAT]; +}; + +struct usb_audio_device +{ + struct list_head list; + u8 mixer; + u8 selector; + void *irq_handle; + u8 num_channels; + u8 num_dsp_iface; + u8 channel_map[MAX_CHAN]; + struct usb_audio_terminal terminal[MAX_CHAN]; + struct usb_audio_interface interface[MAX_IFACE][MAX_ALT]; +}; + + + +/* Audio Class specific Request Codes */ + +#define SET_CUR 0x01 +#define GET_CUR 0x81 +#define SET_MIN 0x02 +#define GET_MIN 0x82 +#define SET_MAX 0x03 +#define GET_MAX 0x83 +#define SET_RES 0x04 +#define GET_RES 0x84 +#define SET_MEM 0x05 +#define GET_MEM 0x85 +#define GET_STAT 0xff + +/* Terminal Control Selectors */ + +#define COPY_PROTECT_CONTROL 0x01 + +/* Feature Unit Control Selectors */ + +#define MUTE_CONTROL 0x01 +#define VOLUME_CONTROL 0x02 +#define BASS_CONTROL 0x03 +#define MID_CONTROL 0x04 +#define TREBLE_CONTROL 0x05 +#define GRAPHIC_EQUALIZER_CONTROL 0x06 +#define AUTOMATIC_GAIN_CONTROL 0x07 +#define DELAY_CONTROL 0x08 +#define BASS_BOOST_CONTROL 0x09 +#define LOUDNESS_CONTROL 0x0a + +/* Endpoint Control Selectors */ + +#define SAMPLING_FREQ_CONTROL 0x01 +#define PITCH_CONTROL 0x02 |