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 CS_AUDIO_UNDEFINED 0x20 34 #define CS_AUDIO_DEVICE 0x21 35 #define CS_AUDIO_CONFIGURATION 0x22 36 #define CS_AUDIO_STRING 0x23 37 #define CS_AUDIO_INTERFACE 0x24 38 #define CS_AUDIO_ENDPOINT 0x25 39 40 #define HEADER 0x01 41 #define INPUT_TERMINAL 0x02 42 #define OUTPUT_TERMINAL 0x03 43 #define MIXER_UNIT 0x04 44 #define SELECTOR_UNIT 0x05 45 #define FEATURE_UNIT 0x06 46 #define PROCESSING_UNIT 0x07 47 #define EXTENSION_UNIT 0x08 48 49 #define AS_GENERAL 0x01 50 #define FORMAT_TYPE 0x02 51 #define FORMAT_SPECIFIC 0x03 52 53 #define EP_GENERAL 0x01 54 55 #define MS_GENERAL 0x01 56 #define MIDI_IN_JACK 0x02 57 #define MIDI_OUT_JACK 0x03 58 59 /* endpoint attributes */ 60 #define EP_ATTR_MASK 0x0c 61 #define EP_ATTR_ASYNC 0x04 62 #define EP_ATTR_ADAPTIVE 0x08 63 #define EP_ATTR_SYNC 0x0c 64 65 /* cs endpoint attributes */ 66 #define EP_CS_ATTR_SAMPLE_RATE 0x01 67 #define EP_CS_ATTR_PITCH_CONTROL 0x02 68 #define EP_CS_ATTR_FILL_MAX 0x80 69 70 /* Audio Class specific Request Codes */ 71 72 #define SET_CUR 0x01 73 #define GET_CUR 0x81 74 #define SET_MIN 0x02 75 #define GET_MIN 0x82 76 #define SET_MAX 0x03 77 #define GET_MAX 0x83 78 #define SET_RES 0x04 79 #define GET_RES 0x84 80 #define SET_MEM 0x05 81 #define GET_MEM 0x85 82 #define GET_STAT 0xff 83 84 /* Terminal Control Selectors */ 85 86 #define COPY_PROTECT_CONTROL 0x01 87 88 /* Endpoint Control Selectors */ 89 90 #define SAMPLING_FREQ_CONTROL 0x01 91 #define PITCH_CONTROL 0x02 92 93 /* Format Types */ 94 #define USB_FORMAT_TYPE_I 0x01 95 #define USB_FORMAT_TYPE_II 0x02 96 #define USB_FORMAT_TYPE_III 0x03 97 98 /* type I */ 99 #define USB_AUDIO_FORMAT_PCM 0x01 100 #define USB_AUDIO_FORMAT_PCM8 0x02 101 #define USB_AUDIO_FORMAT_IEEE_FLOAT 0x03 102 #define USB_AUDIO_FORMAT_ALAW 0x04 103 #define USB_AUDIO_FORMAT_MU_LAW 0x05 104 105 /* type II */ 106 #define USB_AUDIO_FORMAT_MPEG 0x1001 107 #define USB_AUDIO_FORMAT_AC3 0x1002 108 109 /* type III */ 110 #define USB_AUDIO_FORMAT_IEC1937_AC3 0x2001 111 #define USB_AUDIO_FORMAT_IEC1937_MPEG1_LAYER1 0x2002 112 #define USB_AUDIO_FORMAT_IEC1937_MPEG2_NOEXT 0x2003 113 #define USB_AUDIO_FORMAT_IEC1937_MPEG2_EXT 0x2004 114 #define USB_AUDIO_FORMAT_IEC1937_MPEG2_LAYER1_LS 0x2005 115 #define USB_AUDIO_FORMAT_IEC1937_MPEG2_LAYER23_LS 0x2006 116 117 118 /* maximum number of endpoints per interface */ 119 #define MIDI_MAX_ENDPOINTS 2 120 121 /* handling of USB vendor/product ID pairs as 32-bit numbers */ 122 #define USB_ID(vendor, product) (((vendor) << 16) | (product)) 123 #define USB_ID_VENDOR(id) ((id) >> 16) 124 #define USB_ID_PRODUCT(id) ((u16)(id)) 125 126 /* 127 */ 128 129 struct snd_usb_audio { 130 int index; 131 struct usb_device *dev; 132 struct snd_card *card; 133 u32 usb_id; 134 int shutdown; 135 int num_interfaces; 136 137 struct list_head pcm_list; /* list of pcm streams */ 138 int pcm_devs; 139 140 struct list_head midi_list; /* list of midi interfaces */ 141 int next_midi_device; 142 143 struct list_head mixer_list; /* list of mixer interfaces */ 144 }; 145 146 /* 147 * Information about devices with broken descriptors 148 */ 149 150 /* special values for .ifnum */ 151 #define QUIRK_NO_INTERFACE -2 152 #define QUIRK_ANY_INTERFACE -1 153 154 enum quirk_type { 155 QUIRK_IGNORE_INTERFACE, 156 QUIRK_COMPOSITE, 157 QUIRK_MIDI_STANDARD_INTERFACE, 158 QUIRK_MIDI_FIXED_ENDPOINT, 159 QUIRK_MIDI_YAMAHA, 160 QUIRK_MIDI_MIDIMAN, 161 QUIRK_MIDI_NOVATION, 162 QUIRK_MIDI_RAW, 163 QUIRK_MIDI_EMAGIC, 164 QUIRK_MIDI_MIDITECH, 165 QUIRK_AUDIO_STANDARD_INTERFACE, 166 QUIRK_AUDIO_FIXED_ENDPOINT, 167 QUIRK_AUDIO_EDIROL_UA700_UA25, 168 QUIRK_AUDIO_EDIROL_UA1000, 169 170 QUIRK_TYPE_COUNT 171 }; 172 173 struct snd_usb_audio_quirk { 174 const char *vendor_name; 175 const char *product_name; 176 int16_t ifnum; 177 uint16_t type; 178 const void *data; 179 }; 180 181 /* data for QUIRK_MIDI_FIXED_ENDPOINT */ 182 struct snd_usb_midi_endpoint_info { 183 int8_t out_ep; /* ep number, 0 autodetect */ 184 uint8_t out_interval; /* interval for interrupt endpoints */ 185 int8_t in_ep; 186 uint8_t in_interval; 187 uint16_t out_cables; /* bitmask */ 188 uint16_t in_cables; /* bitmask */ 189 }; 190 191 /* for QUIRK_MIDI_YAMAHA, data is NULL */ 192 193 /* for QUIRK_MIDI_MIDIMAN, data points to a snd_usb_midi_endpoint_info 194 * structure (out_cables and in_cables only) */ 195 196 /* for QUIRK_COMPOSITE, data points to an array of snd_usb_audio_quirk 197 * structures, terminated with .ifnum = -1 */ 198 199 /* for QUIRK_AUDIO_FIXED_ENDPOINT, data points to an audioformat structure */ 200 201 /* for QUIRK_AUDIO/MIDI_STANDARD_INTERFACE, data is NULL */ 202 203 /* for QUIRK_AUDIO_EDIROL_UA700_UA25/UA1000, data is NULL */ 204 205 /* for QUIRK_IGNORE_INTERFACE, data is NULL */ 206 207 /* for QUIRK_MIDI_NOVATION and _RAW, data is NULL */ 208 209 /* for QUIRK_MIDI_EMAGIC, data points to a snd_usb_midi_endpoint_info 210 * structure (out_cables and in_cables only) */ 211 212 /* for QUIRK_MIDI_MIDITECH, data is NULL */ 213 214 /* 215 */ 216 217 #define combine_word(s) ((*s) | ((unsigned int)(s)[1] << 8)) 218 #define combine_triple(s) (combine_word(s) | ((unsigned int)(s)[2] << 16)) 219 #define combine_quad(s) (combine_triple(s) | ((unsigned int)(s)[3] << 24)) 220 221 unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size); 222 223 void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype); 224 void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype); 225 226 int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, 227 __u8 request, __u8 requesttype, __u16 value, __u16 index, 228 void *data, __u16 size, int timeout); 229 230 int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif); 231 void snd_usb_mixer_disconnect(struct list_head *p); 232 233 int snd_usb_create_midi_interface(struct snd_usb_audio *chip, struct usb_interface *iface, 234 const struct snd_usb_audio_quirk *quirk); 235 void snd_usbmidi_input_stop(struct list_head* p); 236 void snd_usbmidi_input_start(struct list_head* p); 237 void snd_usbmidi_disconnect(struct list_head *p); 238 239 /* 240 * retrieve usb_interface descriptor from the host interface 241 * (conditional for compatibility with the older API) 242 */ 243 #ifndef get_iface_desc 244 #define get_iface_desc(iface) (&(iface)->desc) 245 #define get_endpoint(alt,ep) (&(alt)->endpoint[ep].desc) 246 #define get_ep_desc(ep) (&(ep)->desc) 247 #define get_cfg_desc(cfg) (&(cfg)->desc) 248 #endif 249 250 #ifndef snd_usb_get_speed 251 #define snd_usb_get_speed(dev) ((dev)->speed) 252 #endif 253 254 #endif /* __USBAUDIO_H */ 255