1#define USB_DT_CS_DEVICE 0x21 2#define USB_DT_CS_CONFIG 0x22 3#define USB_DT_CS_STRING 0x23 4#define USB_DT_CS_INTERFACE 0x24 5#define USB_DT_CS_ENDPOINT 0x25 6 7#define CS_AUDIO_UNDEFINED 0x20 8#define CS_AUDIO_DEVICE 0x21 9#define CS_AUDIO_CONFIGURATION 0x22 10#define CS_AUDIO_STRING 0x23 11#define CS_AUDIO_INTERFACE 0x24 12#define CS_AUDIO_ENDPOINT 0x25 13 14#define HEADER 0x01 15#define INPUT_TERMINAL 0x02 16#define OUTPUT_TERMINAL 0x03 17#define MIXER_UNIT 0x04 18#define SELECTOR_UNIT 0x05 19#define FEATURE_UNIT 0x06 20#define PROCESSING_UNIT 0x07 21#define EXTENSION_UNIT 0x08 22 23#define AS_GENERAL 0x01 24#define FORMAT_TYPE 0x02 25#define FORMAT_SPECIFIC 0x03 26 27#define EP_GENERAL 0x01 28 29#define MAX_CHAN 9 30#define MAX_FREQ 16 31#define MAX_IFACE 8 32#define MAX_FORMAT 8 33#define MAX_ALT 32 /* Sorry, we need quite a few for the Philips webcams */ 34 35struct usb_audio_terminal 36{ 37 u8 flags; 38 u8 assoc; 39 u16 type; /* Mic etc */ 40 u8 channels; 41 u8 source; 42 u16 chancfg; 43}; 44 45struct usb_audio_format 46{ 47 u8 type; 48 u8 channels; 49 u8 num_freq; 50 u8 sfz; 51 u8 bits; 52 u16 freq[MAX_FREQ]; 53}; 54 55struct usb_audio_interface 56{ 57 u8 terminal; 58 u8 delay; 59 u16 num_formats; 60 u16 format_type; 61 u8 flags; 62 u8 idleconf; /* Idle config */ 63#define AU_IFACE_FOUND 1 64 struct usb_audio_format format[MAX_FORMAT]; 65}; 66 67struct usb_audio_device 68{ 69 struct list_head list; 70 u8 mixer; 71 u8 selector; 72 void *irq_handle; 73 u8 num_channels; 74 u8 num_dsp_iface; 75 u8 channel_map[MAX_CHAN]; 76 struct usb_audio_terminal terminal[MAX_CHAN]; 77 struct usb_audio_interface interface[MAX_IFACE][MAX_ALT]; 78}; 79 80 81 82/* Audio Class specific Request Codes */ 83 84#define SET_CUR 0x01 85#define GET_CUR 0x81 86#define SET_MIN 0x02 87#define GET_MIN 0x82 88#define SET_MAX 0x03 89#define GET_MAX 0x83 90#define SET_RES 0x04 91#define GET_RES 0x84 92#define SET_MEM 0x05 93#define GET_MEM 0x85 94#define GET_STAT 0xff 95 96/* Terminal Control Selectors */ 97 98#define COPY_PROTECT_CONTROL 0x01 99 100/* Feature Unit Control Selectors */ 101 102#define MUTE_CONTROL 0x01 103#define VOLUME_CONTROL 0x02 104#define BASS_CONTROL 0x03 105#define MID_CONTROL 0x04 106#define TREBLE_CONTROL 0x05 107#define GRAPHIC_EQUALIZER_CONTROL 0x06 108#define AUTOMATIC_GAIN_CONTROL 0x07 109#define DELAY_CONTROL 0x08 110#define BASS_BOOST_CONTROL 0x09 111#define LOUDNESS_CONTROL 0x0a 112 113/* Endpoint Control Selectors */ 114 115#define SAMPLING_FREQ_CONTROL 0x01 116#define PITCH_CONTROL 0x02 117