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1#ifndef __USBAUDIO_H
2#define __USBAUDIO_H
3/*
4 * (Tentative) USB Audio Driver for ALSA
5 *
6 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
7 *
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23
24
25/*
26 */
27
28#define USB_SUBCLASS_AUDIO_CONTROL 0x01
29#define USB_SUBCLASS_AUDIO_STREAMING 0x02
30#define USB_SUBCLASS_MIDI_STREAMING 0x03
31#define USB_SUBCLASS_VENDOR_SPEC 0xff
32
33#define HEADER 0x01
34#define INPUT_TERMINAL 0x02
35#define OUTPUT_TERMINAL 0x03
36#define MIXER_UNIT 0x04
37#define SELECTOR_UNIT 0x05
38#define FEATURE_UNIT 0x06
39#define PROCESSING_UNIT 0x07
40#define EXTENSION_UNIT 0x08
41
42#define AS_GENERAL 0x01
43#define FORMAT_TYPE 0x02
44#define FORMAT_SPECIFIC 0x03
45
46#define EP_GENERAL 0x01
47
48#define MS_GENERAL 0x01
49#define MIDI_IN_JACK 0x02
50#define MIDI_OUT_JACK 0x03
51
52/* endpoint attributes */
53#define EP_ATTR_MASK 0x0c
54#define EP_ATTR_ASYNC 0x04
55#define EP_ATTR_ADAPTIVE 0x08
56#define EP_ATTR_SYNC 0x0c
57
58/* cs endpoint attributes */
59#define EP_CS_ATTR_SAMPLE_RATE 0x01
60#define EP_CS_ATTR_PITCH_CONTROL 0x02
61#define EP_CS_ATTR_FILL_MAX 0x80
62
63/* Audio Class specific Request Codes */
64
65#define SET_CUR 0x01
66#define GET_CUR 0x81
67#define SET_MIN 0x02
68#define GET_MIN 0x82
69#define SET_MAX 0x03
70#define GET_MAX 0x83
71#define SET_RES 0x04
72#define GET_RES 0x84
73#define SET_MEM 0x05
74#define GET_MEM 0x85
75#define GET_STAT 0xff
76
77/* Terminal Control Selectors */
78
79#define COPY_PROTECT_CONTROL 0x01
80
81/* Endpoint Control Selectors */
82
83#define SAMPLING_FREQ_CONTROL 0x01
84#define PITCH_CONTROL 0x02
85
86/* Format Types */
87#define USB_FORMAT_TYPE_I 0x01
88#define USB_FORMAT_TYPE_II 0x02
89#define USB_FORMAT_TYPE_III 0x03
90
91/* type I */
92#define USB_AUDIO_FORMAT_PCM 0x01
93#define USB_AUDIO_FORMAT_PCM8 0x02
94#define USB_AUDIO_FORMAT_IEEE_FLOAT 0x03
95#define USB_AUDIO_FORMAT_ALAW 0x04
96#define USB_AUDIO_FORMAT_MU_LAW 0x05
97
98/* type II */
99#define USB_AUDIO_FORMAT_MPEG 0x1001
100#define USB_AUDIO_FORMAT_AC3 0x1002
101
102/* type III */
103#define USB_AUDIO_FORMAT_IEC1937_AC3 0x2001
104#define USB_AUDIO_FORMAT_IEC1937_MPEG1_LAYER1 0x2002
105#define USB_AUDIO_FORMAT_IEC1937_MPEG2_NOEXT 0x2003
106#define USB_AUDIO_FORMAT_IEC1937_MPEG2_EXT 0x2004
107#define USB_AUDIO_FORMAT_IEC1937_MPEG2_LAYER1_LS 0x2005
108#define USB_AUDIO_FORMAT_IEC1937_MPEG2_LAYER23_LS 0x2006
109
110
111/* maximum number of endpoints per interface */
112#define MIDI_MAX_ENDPOINTS 2
113
114/* handling of USB vendor/product ID pairs as 32-bit numbers */
115#define USB_ID(vendor, product) (((vendor) << 16) | (product))
116#define USB_ID_VENDOR(id) ((id) >> 16)
117#define USB_ID_PRODUCT(id) ((u16)(id))
118
119/*
120 */
121
122struct snd_usb_audio {
123 int index;
124 struct usb_device *dev;
125 struct snd_card *card;
126 u32 usb_id;
127 int shutdown;
128 int num_interfaces;
129
130 struct list_head pcm_list; /* list of pcm streams */
131 int pcm_devs;
132
133 struct list_head midi_list; /* list of midi interfaces */
134 int next_midi_device;
135
136 struct list_head mixer_list; /* list of mixer interfaces */
137};
138
139/*
140 * Information about devices with broken descriptors
141 */
142
143/* special values for .ifnum */
144#define QUIRK_NO_INTERFACE -2
145#define QUIRK_ANY_INTERFACE -1
146
147enum quirk_type {
148 QUIRK_IGNORE_INTERFACE,
149 QUIRK_COMPOSITE,
150 QUIRK_MIDI_STANDARD_INTERFACE,
151 QUIRK_MIDI_FIXED_ENDPOINT,
152 QUIRK_MIDI_YAMAHA,
153 QUIRK_MIDI_MIDIMAN,
154 QUIRK_MIDI_NOVATION,
155 QUIRK_MIDI_RAW,
156 QUIRK_MIDI_EMAGIC,
157 QUIRK_MIDI_CME,
158 QUIRK_AUDIO_STANDARD_INTERFACE,
159 QUIRK_AUDIO_FIXED_ENDPOINT,
160 QUIRK_AUDIO_EDIROL_UA700_UA25,
161 QUIRK_AUDIO_EDIROL_UA1000,
162 QUIRK_AUDIO_EDIROL_UA101,
163
164 QUIRK_TYPE_COUNT
165};
166
167struct snd_usb_audio_quirk {
168 const char *vendor_name;
169 const char *product_name;
170 int16_t ifnum;
171 uint16_t type;
172 const void *data;
173};
174
175/* data for QUIRK_MIDI_FIXED_ENDPOINT */
176struct snd_usb_midi_endpoint_info {
177 int8_t out_ep; /* ep number, 0 autodetect */
178 uint8_t out_interval; /* interval for interrupt endpoints */
179 int8_t in_ep;
180 uint8_t in_interval;
181 uint16_t out_cables; /* bitmask */
182 uint16_t in_cables; /* bitmask */
183};
184
185/* for QUIRK_MIDI_YAMAHA, data is NULL */
186
187/* for QUIRK_MIDI_MIDIMAN, data points to a snd_usb_midi_endpoint_info
188 * structure (out_cables and in_cables only) */
189
190/* for QUIRK_COMPOSITE, data points to an array of snd_usb_audio_quirk
191 * structures, terminated with .ifnum = -1 */
192
193/* for QUIRK_AUDIO_FIXED_ENDPOINT, data points to an audioformat structure */
194
195/* for QUIRK_AUDIO/MIDI_STANDARD_INTERFACE, data is NULL */
196
197/* for QUIRK_AUDIO_EDIROL_UA700_UA25/UA1000, data is NULL */
198
199/* for QUIRK_IGNORE_INTERFACE, data is NULL */
200
201/* for QUIRK_MIDI_NOVATION and _RAW, data is NULL */
202
203/* for QUIRK_MIDI_EMAGIC, data points to a snd_usb_midi_endpoint_info
204 * structure (out_cables and in_cables only) */
205
206/* for QUIRK_MIDI_CME, data is NULL */
207
208/*
209 */
210
211#define combine_word(s) ((*s) | ((unsigned int)(s)[1] << 8))
212#define combine_triple(s) (combine_word(s) | ((unsigned int)(s)[2] << 16))
213#define combine_quad(s) (combine_triple(s) | ((unsigned int)(s)[3] << 24))
214
215unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size);
216
217void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype);
218void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype);
219
220int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe,
221 __u8 request, __u8 requesttype, __u16 value, __u16 index,
222 void *data, __u16 size, int timeout);
223
224int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif);
225void snd_usb_mixer_disconnect(struct list_head *p);
226
227int snd_usb_create_midi_interface(struct snd_usb_audio *chip, struct usb_interface *iface,
228 const struct snd_usb_audio_quirk *quirk);
229void snd_usbmidi_input_stop(struct list_head* p);
230void snd_usbmidi_input_start(struct list_head* p);
231void snd_usbmidi_disconnect(struct list_head *p);
232
233/*
234 * retrieve usb_interface descriptor from the host interface
235 * (conditional for compatibility with the older API)
236 */
237#ifndef get_iface_desc
238#define get_iface_desc(iface) (&(iface)->desc)
239#define get_endpoint(alt,ep) (&(alt)->endpoint[ep].desc)
240#define get_ep_desc(ep) (&(ep)->desc)
241#define get_cfg_desc(cfg) (&(cfg)->desc)
242#endif
243
244#ifndef snd_usb_get_speed
245#define snd_usb_get_speed(dev) ((dev)->speed)
246#endif
247
248#endif /* __USBAUDIO_H */