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