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 */ 121 122 struct 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 -1 146 147 enum 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 }; 166 167 struct 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 */ 176 struct 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)) 214 215 unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size); 216 217 void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype); 218 void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype); 219 220 int 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); 223 224 int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif); 225 void snd_usb_mixer_disconnect(struct list_head *p); 226 227 int snd_usb_create_midi_interface(struct snd_usb_audio *chip, struct usb_interface *iface, 228 const struct snd_usb_audio_quirk *quirk); 229 void snd_usbmidi_input_stop(struct list_head* p); 230 void snd_usbmidi_input_start(struct list_head* p); 231 void 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 */ 249