Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 1 | /* |
| 2 | * (Tentative) USB Audio Driver for ALSA |
| 3 | * |
| 4 | * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de> |
| 5 | * |
| 6 | * Many codes borrowed from audio.c by |
| 7 | * Alan Cox (alan@lxorguk.ukuu.org.uk) |
| 8 | * Thomas Sailer (sailer@ife.ee.ethz.ch) |
| 9 | * |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License as published by |
| 13 | * the Free Software Foundation; either version 2 of the License, or |
| 14 | * (at your option) any later version. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License |
| 22 | * along with this program; if not, write to the Free Software |
| 23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 24 | * |
| 25 | * |
| 26 | * NOTES: |
| 27 | * |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 28 | * - the linked URBs would be preferred but not used so far because of |
| 29 | * the instability of unlinking. |
| 30 | * - type II is not supported properly. there is no device which supports |
| 31 | * this type *correctly*. SB extigy looks as if it supports, but it's |
| 32 | * indeed an AC3 stream packed in SPDIF frames (i.e. no real AC3 stream). |
| 33 | */ |
| 34 | |
| 35 | |
| 36 | #include <linux/bitops.h> |
| 37 | #include <linux/init.h> |
| 38 | #include <linux/list.h> |
| 39 | #include <linux/slab.h> |
| 40 | #include <linux/string.h> |
Takashi Iwai | 3ffc122 | 2011-03-21 12:00:00 +0100 | [diff] [blame] | 41 | #include <linux/ctype.h> |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 42 | #include <linux/usb.h> |
| 43 | #include <linux/moduleparam.h> |
| 44 | #include <linux/mutex.h> |
| 45 | #include <linux/usb/audio.h> |
Daniel Mack | 7e84789 | 2010-03-11 21:13:20 +0100 | [diff] [blame] | 46 | #include <linux/usb/audio-v2.h> |
Paul Gortmaker | da155d5 | 2011-07-15 12:38:28 -0400 | [diff] [blame] | 47 | #include <linux/module.h> |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 48 | |
Daniel Mack | 9e38658 | 2011-05-25 09:09:01 +0200 | [diff] [blame] | 49 | #include <sound/control.h> |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 50 | #include <sound/core.h> |
| 51 | #include <sound/info.h> |
| 52 | #include <sound/pcm.h> |
| 53 | #include <sound/pcm_params.h> |
| 54 | #include <sound/initval.h> |
| 55 | |
| 56 | #include "usbaudio.h" |
| 57 | #include "card.h" |
| 58 | #include "midi.h" |
Daniel Mack | f0b5e63 | 2010-03-11 21:13:23 +0100 | [diff] [blame] | 59 | #include "mixer.h" |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 60 | #include "proc.h" |
| 61 | #include "quirks.h" |
| 62 | #include "endpoint.h" |
| 63 | #include "helper.h" |
| 64 | #include "debug.h" |
| 65 | #include "pcm.h" |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 66 | #include "format.h" |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 67 | #include "power.h" |
Daniel Mack | e8e8bab | 2011-09-12 18:54:12 +0200 | [diff] [blame] | 68 | #include "stream.h" |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 69 | |
| 70 | MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>"); |
| 71 | MODULE_DESCRIPTION("USB Audio"); |
| 72 | MODULE_LICENSE("GPL"); |
| 73 | MODULE_SUPPORTED_DEVICE("{{Generic,USB Audio}}"); |
| 74 | |
| 75 | |
| 76 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ |
| 77 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ |
Rusty Russell | a67ff6a | 2011-12-15 13:49:36 +1030 | [diff] [blame] | 78 | static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;/* Enable this card */ |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 79 | /* Vendor/product IDs for this card */ |
| 80 | static int vid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; |
| 81 | static int pid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 82 | static int device_setup[SNDRV_CARDS]; /* device parameter for this card */ |
Rusty Russell | a67ff6a | 2011-12-15 13:49:36 +1030 | [diff] [blame] | 83 | static bool ignore_ctl_error; |
Eldad Zack | ef02e29 | 2013-04-03 23:18:56 +0200 | [diff] [blame] | 84 | static bool autoclock = true; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 85 | |
| 86 | module_param_array(index, int, NULL, 0444); |
| 87 | MODULE_PARM_DESC(index, "Index value for the USB audio adapter."); |
| 88 | module_param_array(id, charp, NULL, 0444); |
| 89 | MODULE_PARM_DESC(id, "ID string for the USB audio adapter."); |
| 90 | module_param_array(enable, bool, NULL, 0444); |
| 91 | MODULE_PARM_DESC(enable, "Enable USB audio adapter."); |
| 92 | module_param_array(vid, int, NULL, 0444); |
| 93 | MODULE_PARM_DESC(vid, "Vendor ID for the USB audio device."); |
| 94 | module_param_array(pid, int, NULL, 0444); |
| 95 | MODULE_PARM_DESC(pid, "Product ID for the USB audio device."); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 96 | module_param_array(device_setup, int, NULL, 0444); |
| 97 | MODULE_PARM_DESC(device_setup, "Specific device setup (if needed)."); |
| 98 | module_param(ignore_ctl_error, bool, 0444); |
| 99 | MODULE_PARM_DESC(ignore_ctl_error, |
| 100 | "Ignore errors from USB controller for mixer interfaces."); |
Eldad Zack | ef02e29 | 2013-04-03 23:18:56 +0200 | [diff] [blame] | 101 | module_param(autoclock, bool, 0444); |
| 102 | MODULE_PARM_DESC(autoclock, "Enable auto-clock selection for UAC2 devices (default: yes)."); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 103 | |
| 104 | /* |
| 105 | * we keep the snd_usb_audio_t instances by ourselves for merging |
| 106 | * the all interfaces on the same card as one sound device. |
| 107 | */ |
| 108 | |
| 109 | static DEFINE_MUTEX(register_mutex); |
| 110 | static struct snd_usb_audio *usb_chip[SNDRV_CARDS]; |
| 111 | static struct usb_driver usb_audio_driver; |
| 112 | |
| 113 | /* |
| 114 | * disconnect streams |
| 115 | * called from snd_usb_audio_disconnect() |
| 116 | */ |
| 117 | static void snd_usb_stream_disconnect(struct list_head *head) |
| 118 | { |
| 119 | int idx; |
| 120 | struct snd_usb_stream *as; |
| 121 | struct snd_usb_substream *subs; |
| 122 | |
| 123 | as = list_entry(head, struct snd_usb_stream, list); |
| 124 | for (idx = 0; idx < 2; idx++) { |
| 125 | subs = &as->substream[idx]; |
| 126 | if (!subs->num_formats) |
Takashi Iwai | 76195fb | 2010-09-08 08:27:02 +0200 | [diff] [blame] | 127 | continue; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 128 | subs->interface = -1; |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 129 | subs->data_endpoint = NULL; |
| 130 | subs->sync_endpoint = NULL; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 131 | } |
| 132 | } |
| 133 | |
| 134 | static int snd_usb_create_stream(struct snd_usb_audio *chip, int ctrlif, int interface) |
| 135 | { |
| 136 | struct usb_device *dev = chip->dev; |
| 137 | struct usb_host_interface *alts; |
| 138 | struct usb_interface_descriptor *altsd; |
| 139 | struct usb_interface *iface = usb_ifnum_to_if(dev, interface); |
| 140 | |
| 141 | if (!iface) { |
Takashi Iwai | 0ba41d9 | 2014-02-26 13:02:17 +0100 | [diff] [blame] | 142 | dev_err(&dev->dev, "%u:%d : does not exist\n", |
| 143 | ctrlif, interface); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 144 | return -EINVAL; |
| 145 | } |
| 146 | |
Clemens Ladisch | 342cda29 | 2013-06-15 11:21:09 +0200 | [diff] [blame] | 147 | alts = &iface->altsetting[0]; |
| 148 | altsd = get_iface_desc(alts); |
| 149 | |
| 150 | /* |
| 151 | * Android with both accessory and audio interfaces enabled gets the |
| 152 | * interface numbers wrong. |
| 153 | */ |
| 154 | if ((chip->usb_id == USB_ID(0x18d1, 0x2d04) || |
| 155 | chip->usb_id == USB_ID(0x18d1, 0x2d05)) && |
| 156 | interface == 0 && |
| 157 | altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC && |
| 158 | altsd->bInterfaceSubClass == USB_SUBCLASS_VENDOR_SPEC) { |
| 159 | interface = 2; |
| 160 | iface = usb_ifnum_to_if(dev, interface); |
| 161 | if (!iface) |
| 162 | return -EINVAL; |
| 163 | alts = &iface->altsetting[0]; |
| 164 | altsd = get_iface_desc(alts); |
| 165 | } |
| 166 | |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 167 | if (usb_interface_claimed(iface)) { |
Takashi Iwai | 0ba41d9 | 2014-02-26 13:02:17 +0100 | [diff] [blame] | 168 | dev_dbg(&dev->dev, "%d:%d: skipping, already claimed\n", |
| 169 | ctrlif, interface); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 170 | return -EINVAL; |
| 171 | } |
| 172 | |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 173 | if ((altsd->bInterfaceClass == USB_CLASS_AUDIO || |
| 174 | altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC) && |
| 175 | altsd->bInterfaceSubClass == USB_SUBCLASS_MIDISTREAMING) { |
| 176 | int err = snd_usbmidi_create(chip->card, iface, |
| 177 | &chip->midi_list, NULL); |
| 178 | if (err < 0) { |
Takashi Iwai | 0ba41d9 | 2014-02-26 13:02:17 +0100 | [diff] [blame] | 179 | dev_err(&dev->dev, |
| 180 | "%u:%d: cannot create sequencer device\n", |
| 181 | ctrlif, interface); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 182 | return -EINVAL; |
| 183 | } |
| 184 | usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L); |
| 185 | |
| 186 | return 0; |
| 187 | } |
| 188 | |
| 189 | if ((altsd->bInterfaceClass != USB_CLASS_AUDIO && |
| 190 | altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || |
| 191 | altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING) { |
Takashi Iwai | 0ba41d9 | 2014-02-26 13:02:17 +0100 | [diff] [blame] | 192 | dev_dbg(&dev->dev, |
| 193 | "%u:%d: skipping non-supported interface %d\n", |
| 194 | ctrlif, interface, altsd->bInterfaceClass); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 195 | /* skip non-supported classes */ |
| 196 | return -EINVAL; |
| 197 | } |
| 198 | |
| 199 | if (snd_usb_get_speed(dev) == USB_SPEED_LOW) { |
Takashi Iwai | 0ba41d9 | 2014-02-26 13:02:17 +0100 | [diff] [blame] | 200 | dev_err(&dev->dev, "low speed audio streaming not supported\n"); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 201 | return -EINVAL; |
| 202 | } |
| 203 | |
Daniel Mack | e8e8bab | 2011-09-12 18:54:12 +0200 | [diff] [blame] | 204 | if (! snd_usb_parse_audio_interface(chip, interface)) { |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 205 | usb_set_interface(dev, interface, 0); /* reset the current interface */ |
| 206 | usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L); |
| 207 | return -EINVAL; |
| 208 | } |
| 209 | |
| 210 | return 0; |
| 211 | } |
| 212 | |
| 213 | /* |
| 214 | * parse audio control descriptor and create pcm/midi streams |
| 215 | */ |
| 216 | static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif) |
| 217 | { |
| 218 | struct usb_device *dev = chip->dev; |
| 219 | struct usb_host_interface *host_iface; |
| 220 | struct usb_interface_descriptor *altsd; |
| 221 | void *control_header; |
| 222 | int i, protocol; |
| 223 | |
| 224 | /* find audiocontrol interface */ |
| 225 | host_iface = &usb_ifnum_to_if(dev, ctrlif)->altsetting[0]; |
| 226 | control_header = snd_usb_find_csint_desc(host_iface->extra, |
| 227 | host_iface->extralen, |
| 228 | NULL, UAC_HEADER); |
| 229 | altsd = get_iface_desc(host_iface); |
| 230 | protocol = altsd->bInterfaceProtocol; |
| 231 | |
| 232 | if (!control_header) { |
Takashi Iwai | 0ba41d9 | 2014-02-26 13:02:17 +0100 | [diff] [blame] | 233 | dev_err(&dev->dev, "cannot find UAC_HEADER\n"); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 234 | return -EINVAL; |
| 235 | } |
| 236 | |
| 237 | switch (protocol) { |
Clemens Ladisch | a2acad8 | 2010-09-03 10:53:11 +0200 | [diff] [blame] | 238 | default: |
Takashi Iwai | 0ba41d9 | 2014-02-26 13:02:17 +0100 | [diff] [blame] | 239 | dev_warn(&dev->dev, |
| 240 | "unknown interface protocol %#02x, assuming v1\n", |
| 241 | protocol); |
Clemens Ladisch | a2acad8 | 2010-09-03 10:53:11 +0200 | [diff] [blame] | 242 | /* fall through */ |
| 243 | |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 244 | case UAC_VERSION_1: { |
Daniel Mack | 69da9bc | 2010-06-16 17:57:28 +0200 | [diff] [blame] | 245 | struct uac1_ac_header_descriptor *h1 = control_header; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 246 | |
| 247 | if (!h1->bInCollection) { |
Takashi Iwai | 0ba41d9 | 2014-02-26 13:02:17 +0100 | [diff] [blame] | 248 | dev_info(&dev->dev, "skipping empty audio interface (v1)\n"); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 249 | return -EINVAL; |
| 250 | } |
| 251 | |
| 252 | if (h1->bLength < sizeof(*h1) + h1->bInCollection) { |
Takashi Iwai | 0ba41d9 | 2014-02-26 13:02:17 +0100 | [diff] [blame] | 253 | dev_err(&dev->dev, "invalid UAC_HEADER (v1)\n"); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 254 | return -EINVAL; |
| 255 | } |
| 256 | |
| 257 | for (i = 0; i < h1->bInCollection; i++) |
| 258 | snd_usb_create_stream(chip, ctrlif, h1->baInterfaceNr[i]); |
| 259 | |
| 260 | break; |
| 261 | } |
| 262 | |
| 263 | case UAC_VERSION_2: { |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 264 | struct usb_interface_assoc_descriptor *assoc = |
| 265 | usb_ifnum_to_if(dev, ctrlif)->intf_assoc; |
| 266 | |
| 267 | if (!assoc) { |
Clemens Ladisch | 281a6ac | 2013-03-11 20:15:34 +0100 | [diff] [blame] | 268 | /* |
| 269 | * Firmware writers cannot count to three. So to find |
| 270 | * the IAD on the NuForce UDH-100, also check the next |
| 271 | * interface. |
| 272 | */ |
| 273 | struct usb_interface *iface = |
| 274 | usb_ifnum_to_if(dev, ctrlif + 1); |
| 275 | if (iface && |
| 276 | iface->intf_assoc && |
| 277 | iface->intf_assoc->bFunctionClass == USB_CLASS_AUDIO && |
| 278 | iface->intf_assoc->bFunctionProtocol == UAC_VERSION_2) |
| 279 | assoc = iface->intf_assoc; |
| 280 | } |
| 281 | |
| 282 | if (!assoc) { |
Takashi Iwai | 0ba41d9 | 2014-02-26 13:02:17 +0100 | [diff] [blame] | 283 | dev_err(&dev->dev, "Audio class v2 interfaces need an interface association\n"); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 284 | return -EINVAL; |
| 285 | } |
| 286 | |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 287 | for (i = 0; i < assoc->bInterfaceCount; i++) { |
| 288 | int intf = assoc->bFirstInterface + i; |
| 289 | |
| 290 | if (intf != ctrlif) |
| 291 | snd_usb_create_stream(chip, ctrlif, intf); |
| 292 | } |
| 293 | |
| 294 | break; |
| 295 | } |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 296 | } |
| 297 | |
| 298 | return 0; |
| 299 | } |
| 300 | |
| 301 | /* |
| 302 | * free the chip instance |
| 303 | * |
| 304 | * here we have to do not much, since pcm and controls are already freed |
| 305 | * |
| 306 | */ |
| 307 | |
| 308 | static int snd_usb_audio_free(struct snd_usb_audio *chip) |
| 309 | { |
Daniel Mack | 596580d | 2012-04-12 13:51:10 +0200 | [diff] [blame] | 310 | mutex_destroy(&chip->mutex); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 311 | kfree(chip); |
| 312 | return 0; |
| 313 | } |
| 314 | |
| 315 | static int snd_usb_audio_dev_free(struct snd_device *device) |
| 316 | { |
| 317 | struct snd_usb_audio *chip = device->device_data; |
| 318 | return snd_usb_audio_free(chip); |
| 319 | } |
| 320 | |
Takashi Iwai | 3ffc122 | 2011-03-21 12:00:00 +0100 | [diff] [blame] | 321 | static void remove_trailing_spaces(char *str) |
| 322 | { |
| 323 | char *p; |
| 324 | |
| 325 | if (!*str) |
| 326 | return; |
| 327 | for (p = str + strlen(str) - 1; p >= str && isspace(*p); p--) |
| 328 | *p = 0; |
| 329 | } |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 330 | |
| 331 | /* |
| 332 | * create a chip instance and set its names. |
| 333 | */ |
Takashi Iwai | 874b8d4 | 2014-01-29 14:22:20 +0100 | [diff] [blame] | 334 | static int snd_usb_audio_create(struct usb_interface *intf, |
| 335 | struct usb_device *dev, int idx, |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 336 | const struct snd_usb_audio_quirk *quirk, |
| 337 | struct snd_usb_audio **rchip) |
| 338 | { |
| 339 | struct snd_card *card; |
| 340 | struct snd_usb_audio *chip; |
| 341 | int err, len; |
| 342 | char component[14]; |
| 343 | static struct snd_device_ops ops = { |
| 344 | .dev_free = snd_usb_audio_dev_free, |
| 345 | }; |
| 346 | |
| 347 | *rchip = NULL; |
| 348 | |
Paul Zimmerman | 4f4e8f6 | 2010-08-13 12:42:07 -0700 | [diff] [blame] | 349 | switch (snd_usb_get_speed(dev)) { |
| 350 | case USB_SPEED_LOW: |
| 351 | case USB_SPEED_FULL: |
| 352 | case USB_SPEED_HIGH: |
Thomas Pugliese | df3774c | 2013-10-01 14:32:15 -0500 | [diff] [blame] | 353 | case USB_SPEED_WIRELESS: |
Paul Zimmerman | 4f4e8f6 | 2010-08-13 12:42:07 -0700 | [diff] [blame] | 354 | case USB_SPEED_SUPER: |
| 355 | break; |
| 356 | default: |
Takashi Iwai | 0ba41d9 | 2014-02-26 13:02:17 +0100 | [diff] [blame] | 357 | dev_err(&dev->dev, "unknown device speed %d\n", snd_usb_get_speed(dev)); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 358 | return -ENXIO; |
| 359 | } |
| 360 | |
Takashi Iwai | 874b8d4 | 2014-01-29 14:22:20 +0100 | [diff] [blame] | 361 | err = snd_card_new(&intf->dev, index[idx], id[idx], THIS_MODULE, |
| 362 | 0, &card); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 363 | if (err < 0) { |
Takashi Iwai | 0ba41d9 | 2014-02-26 13:02:17 +0100 | [diff] [blame] | 364 | dev_err(&dev->dev, "cannot create card instance %d\n", idx); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 365 | return err; |
| 366 | } |
| 367 | |
| 368 | chip = kzalloc(sizeof(*chip), GFP_KERNEL); |
| 369 | if (! chip) { |
| 370 | snd_card_free(card); |
| 371 | return -ENOMEM; |
| 372 | } |
| 373 | |
Daniel Mack | 596580d | 2012-04-12 13:51:10 +0200 | [diff] [blame] | 374 | mutex_init(&chip->mutex); |
Takashi Iwai | 34f3c89 | 2012-10-15 12:16:02 +0200 | [diff] [blame] | 375 | init_rwsem(&chip->shutdown_rwsem); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 376 | chip->index = idx; |
| 377 | chip->dev = dev; |
| 378 | chip->card = card; |
| 379 | chip->setup = device_setup[idx]; |
Eldad Zack | ef02e29 | 2013-04-03 23:18:56 +0200 | [diff] [blame] | 380 | chip->autoclock = autoclock; |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 381 | chip->probing = 1; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 382 | |
| 383 | chip->usb_id = USB_ID(le16_to_cpu(dev->descriptor.idVendor), |
| 384 | le16_to_cpu(dev->descriptor.idProduct)); |
| 385 | INIT_LIST_HEAD(&chip->pcm_list); |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 386 | INIT_LIST_HEAD(&chip->ep_list); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 387 | INIT_LIST_HEAD(&chip->midi_list); |
| 388 | INIT_LIST_HEAD(&chip->mixer_list); |
| 389 | |
| 390 | if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { |
| 391 | snd_usb_audio_free(chip); |
| 392 | snd_card_free(card); |
| 393 | return err; |
| 394 | } |
| 395 | |
| 396 | strcpy(card->driver, "USB-Audio"); |
| 397 | sprintf(component, "USB%04x:%04x", |
| 398 | USB_ID_VENDOR(chip->usb_id), USB_ID_PRODUCT(chip->usb_id)); |
| 399 | snd_component_add(card, component); |
| 400 | |
| 401 | /* retrieve the device string as shortname */ |
Takashi Iwai | 3ffc122 | 2011-03-21 12:00:00 +0100 | [diff] [blame] | 402 | if (quirk && quirk->product_name && *quirk->product_name) { |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 403 | strlcpy(card->shortname, quirk->product_name, sizeof(card->shortname)); |
| 404 | } else { |
| 405 | if (!dev->descriptor.iProduct || |
| 406 | usb_string(dev, dev->descriptor.iProduct, |
| 407 | card->shortname, sizeof(card->shortname)) <= 0) { |
| 408 | /* no name available from anywhere, so use ID */ |
| 409 | sprintf(card->shortname, "USB Device %#04x:%#04x", |
| 410 | USB_ID_VENDOR(chip->usb_id), |
| 411 | USB_ID_PRODUCT(chip->usb_id)); |
| 412 | } |
| 413 | } |
Takashi Iwai | 3ffc122 | 2011-03-21 12:00:00 +0100 | [diff] [blame] | 414 | remove_trailing_spaces(card->shortname); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 415 | |
| 416 | /* retrieve the vendor and device strings as longname */ |
Takashi Iwai | 3ffc122 | 2011-03-21 12:00:00 +0100 | [diff] [blame] | 417 | if (quirk && quirk->vendor_name && *quirk->vendor_name) { |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 418 | len = strlcpy(card->longname, quirk->vendor_name, sizeof(card->longname)); |
| 419 | } else { |
| 420 | if (dev->descriptor.iManufacturer) |
| 421 | len = usb_string(dev, dev->descriptor.iManufacturer, |
| 422 | card->longname, sizeof(card->longname)); |
| 423 | else |
| 424 | len = 0; |
| 425 | /* we don't really care if there isn't any vendor string */ |
| 426 | } |
Takashi Iwai | 3ffc122 | 2011-03-21 12:00:00 +0100 | [diff] [blame] | 427 | if (len > 0) { |
| 428 | remove_trailing_spaces(card->longname); |
| 429 | if (*card->longname) |
| 430 | strlcat(card->longname, " ", sizeof(card->longname)); |
| 431 | } |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 432 | |
| 433 | strlcat(card->longname, card->shortname, sizeof(card->longname)); |
| 434 | |
| 435 | len = strlcat(card->longname, " at ", sizeof(card->longname)); |
| 436 | |
| 437 | if (len < sizeof(card->longname)) |
| 438 | usb_make_path(dev, card->longname + len, sizeof(card->longname) - len); |
| 439 | |
Paul Zimmerman | 4f4e8f6 | 2010-08-13 12:42:07 -0700 | [diff] [blame] | 440 | switch (snd_usb_get_speed(dev)) { |
| 441 | case USB_SPEED_LOW: |
| 442 | strlcat(card->longname, ", low speed", sizeof(card->longname)); |
| 443 | break; |
| 444 | case USB_SPEED_FULL: |
| 445 | strlcat(card->longname, ", full speed", sizeof(card->longname)); |
| 446 | break; |
| 447 | case USB_SPEED_HIGH: |
| 448 | strlcat(card->longname, ", high speed", sizeof(card->longname)); |
| 449 | break; |
| 450 | case USB_SPEED_SUPER: |
| 451 | strlcat(card->longname, ", super speed", sizeof(card->longname)); |
| 452 | break; |
| 453 | default: |
| 454 | break; |
| 455 | } |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 456 | |
| 457 | snd_usb_audio_create_proc(chip); |
| 458 | |
| 459 | *rchip = chip; |
| 460 | return 0; |
| 461 | } |
| 462 | |
| 463 | /* |
| 464 | * probe the active usb device |
| 465 | * |
| 466 | * note that this can be called multiple times per a device, when it |
| 467 | * includes multiple audio control interfaces. |
| 468 | * |
| 469 | * thus we check the usb device pointer and creates the card instance |
| 470 | * only at the first time. the successive calls of this function will |
| 471 | * append the pcm interface to the corresponding card. |
| 472 | */ |
Pavel Roskin | 81b85b6 | 2011-07-06 11:20:13 -0400 | [diff] [blame] | 473 | static struct snd_usb_audio * |
| 474 | snd_usb_audio_probe(struct usb_device *dev, |
| 475 | struct usb_interface *intf, |
| 476 | const struct usb_device_id *usb_id) |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 477 | { |
| 478 | const struct snd_usb_audio_quirk *quirk = (const struct snd_usb_audio_quirk *)usb_id->driver_info; |
| 479 | int i, err; |
| 480 | struct snd_usb_audio *chip; |
| 481 | struct usb_host_interface *alts; |
| 482 | int ifnum; |
| 483 | u32 id; |
| 484 | |
| 485 | alts = &intf->altsetting[0]; |
| 486 | ifnum = get_iface_desc(alts)->bInterfaceNumber; |
| 487 | id = USB_ID(le16_to_cpu(dev->descriptor.idVendor), |
| 488 | le16_to_cpu(dev->descriptor.idProduct)); |
| 489 | if (quirk && quirk->ifnum >= 0 && ifnum != quirk->ifnum) |
| 490 | goto __err_val; |
| 491 | |
| 492 | if (snd_usb_apply_boot_quirk(dev, intf, quirk) < 0) |
| 493 | goto __err_val; |
| 494 | |
| 495 | /* |
| 496 | * found a config. now register to ALSA |
| 497 | */ |
| 498 | |
| 499 | /* check whether it's already registered */ |
| 500 | chip = NULL; |
| 501 | mutex_lock(®ister_mutex); |
| 502 | for (i = 0; i < SNDRV_CARDS; i++) { |
| 503 | if (usb_chip[i] && usb_chip[i]->dev == dev) { |
| 504 | if (usb_chip[i]->shutdown) { |
Takashi Iwai | 0ba41d9 | 2014-02-26 13:02:17 +0100 | [diff] [blame] | 505 | dev_err(&dev->dev, "USB device is in the shutdown state, cannot create a card instance\n"); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 506 | goto __error; |
| 507 | } |
| 508 | chip = usb_chip[i]; |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 509 | chip->probing = 1; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 510 | break; |
| 511 | } |
| 512 | } |
| 513 | if (! chip) { |
| 514 | /* it's a fresh one. |
| 515 | * now look for an empty slot and create a new card instance |
| 516 | */ |
| 517 | for (i = 0; i < SNDRV_CARDS; i++) |
| 518 | if (enable[i] && ! usb_chip[i] && |
| 519 | (vid[i] == -1 || vid[i] == USB_ID_VENDOR(id)) && |
| 520 | (pid[i] == -1 || pid[i] == USB_ID_PRODUCT(id))) { |
Takashi Iwai | 874b8d4 | 2014-01-29 14:22:20 +0100 | [diff] [blame] | 521 | if (snd_usb_audio_create(intf, dev, i, quirk, |
| 522 | &chip) < 0) { |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 523 | goto __error; |
| 524 | } |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 525 | chip->pm_intf = intf; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 526 | break; |
| 527 | } |
| 528 | if (!chip) { |
Takashi Iwai | 0ba41d9 | 2014-02-26 13:02:17 +0100 | [diff] [blame] | 529 | dev_err(&dev->dev, "no available usb audio device\n"); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 530 | goto __error; |
| 531 | } |
| 532 | } |
| 533 | |
Daniel Mack | 7b6717e | 2010-09-02 17:13:15 +0800 | [diff] [blame] | 534 | /* |
| 535 | * For devices with more than one control interface, we assume the |
| 536 | * first contains the audio controls. We might need a more specific |
| 537 | * check here in the future. |
| 538 | */ |
| 539 | if (!chip->ctrl_intf) |
| 540 | chip->ctrl_intf = alts; |
Daniel Mack | 79f920f | 2010-05-31 14:51:31 +0200 | [diff] [blame] | 541 | |
Daniel Mack | 5875c2c | 2011-05-25 09:08:59 +0200 | [diff] [blame] | 542 | chip->txfr_quirk = 0; |
| 543 | err = 1; /* continue */ |
| 544 | if (quirk && quirk->ifnum != QUIRK_NO_INTERFACE) { |
| 545 | /* need some special handlings */ |
| 546 | if ((err = snd_usb_create_quirk(chip, intf, &usb_audio_driver, quirk)) < 0) |
| 547 | goto __error; |
| 548 | } |
| 549 | |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 550 | if (err > 0) { |
| 551 | /* create normal USB audio interfaces */ |
| 552 | if (snd_usb_create_streams(chip, ifnum) < 0 || |
| 553 | snd_usb_create_mixer(chip, ifnum, ignore_ctl_error) < 0) { |
| 554 | goto __error; |
| 555 | } |
| 556 | } |
| 557 | |
| 558 | /* we are allowed to call snd_card_register() many times */ |
| 559 | if (snd_card_register(chip->card) < 0) { |
| 560 | goto __error; |
| 561 | } |
| 562 | |
| 563 | usb_chip[chip->index] = chip; |
| 564 | chip->num_interfaces++; |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 565 | chip->probing = 0; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 566 | mutex_unlock(®ister_mutex); |
| 567 | return chip; |
| 568 | |
| 569 | __error: |
Thomas Pfaff | 61a6a10 | 2011-09-26 15:43:59 +0200 | [diff] [blame] | 570 | if (chip) { |
| 571 | if (!chip->num_interfaces) |
| 572 | snd_card_free(chip->card); |
| 573 | chip->probing = 0; |
| 574 | } |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 575 | mutex_unlock(®ister_mutex); |
| 576 | __err_val: |
| 577 | return NULL; |
| 578 | } |
| 579 | |
| 580 | /* |
| 581 | * we need to take care of counter, since disconnection can be called also |
| 582 | * many times as well as usb_audio_probe(). |
| 583 | */ |
Pavel Roskin | 81b85b6 | 2011-07-06 11:20:13 -0400 | [diff] [blame] | 584 | static void snd_usb_audio_disconnect(struct usb_device *dev, |
| 585 | struct snd_usb_audio *chip) |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 586 | { |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 587 | struct snd_card *card; |
Pavel Roskin | 03d2f44 | 2012-08-30 17:11:17 -0400 | [diff] [blame] | 588 | struct list_head *p, *n; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 589 | |
Pavel Roskin | 81b85b6 | 2011-07-06 11:20:13 -0400 | [diff] [blame] | 590 | if (chip == (void *)-1L) |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 591 | return; |
| 592 | |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 593 | card = chip->card; |
Takashi Iwai | 34f3c89 | 2012-10-15 12:16:02 +0200 | [diff] [blame] | 594 | down_write(&chip->shutdown_rwsem); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 595 | chip->shutdown = 1; |
Takashi Iwai | 10e4423 | 2012-11-13 11:22:48 +0100 | [diff] [blame] | 596 | up_write(&chip->shutdown_rwsem); |
| 597 | |
| 598 | mutex_lock(®ister_mutex); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 599 | chip->num_interfaces--; |
| 600 | if (chip->num_interfaces <= 0) { |
| 601 | snd_card_disconnect(card); |
| 602 | /* release the pcm resources */ |
| 603 | list_for_each(p, &chip->pcm_list) { |
| 604 | snd_usb_stream_disconnect(p); |
| 605 | } |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 606 | /* release the endpoint resources */ |
Pavel Roskin | 03d2f44 | 2012-08-30 17:11:17 -0400 | [diff] [blame] | 607 | list_for_each_safe(p, n, &chip->ep_list) { |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 608 | snd_usb_endpoint_free(p); |
| 609 | } |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 610 | /* release the midi resources */ |
| 611 | list_for_each(p, &chip->midi_list) { |
| 612 | snd_usbmidi_disconnect(p); |
| 613 | } |
| 614 | /* release mixer resources */ |
| 615 | list_for_each(p, &chip->mixer_list) { |
| 616 | snd_usb_mixer_disconnect(p); |
| 617 | } |
| 618 | usb_chip[chip->index] = NULL; |
| 619 | mutex_unlock(®ister_mutex); |
| 620 | snd_card_free_when_closed(card); |
| 621 | } else { |
| 622 | mutex_unlock(®ister_mutex); |
| 623 | } |
| 624 | } |
| 625 | |
| 626 | /* |
| 627 | * new 2.5 USB kernel API |
| 628 | */ |
| 629 | static int usb_audio_probe(struct usb_interface *intf, |
| 630 | const struct usb_device_id *id) |
| 631 | { |
Pavel Roskin | 81b85b6 | 2011-07-06 11:20:13 -0400 | [diff] [blame] | 632 | struct snd_usb_audio *chip; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 633 | chip = snd_usb_audio_probe(interface_to_usbdev(intf), intf, id); |
| 634 | if (chip) { |
| 635 | usb_set_intfdata(intf, chip); |
| 636 | return 0; |
| 637 | } else |
| 638 | return -EIO; |
| 639 | } |
| 640 | |
| 641 | static void usb_audio_disconnect(struct usb_interface *intf) |
| 642 | { |
| 643 | snd_usb_audio_disconnect(interface_to_usbdev(intf), |
| 644 | usb_get_intfdata(intf)); |
| 645 | } |
| 646 | |
| 647 | #ifdef CONFIG_PM |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 648 | |
| 649 | int snd_usb_autoresume(struct snd_usb_audio *chip) |
| 650 | { |
| 651 | int err = -ENODEV; |
| 652 | |
Takashi Iwai | 34f3c89 | 2012-10-15 12:16:02 +0200 | [diff] [blame] | 653 | down_read(&chip->shutdown_rwsem); |
Takashi Iwai | 1ee23fe | 2014-05-02 18:17:06 +0200 | [diff] [blame^] | 654 | if (chip->probing && chip->in_pm) |
Takashi Iwai | 60af3d0 | 2013-04-25 07:38:15 +0200 | [diff] [blame] | 655 | err = 0; |
| 656 | else if (!chip->shutdown) |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 657 | err = usb_autopm_get_interface(chip->pm_intf); |
Takashi Iwai | 34f3c89 | 2012-10-15 12:16:02 +0200 | [diff] [blame] | 658 | up_read(&chip->shutdown_rwsem); |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 659 | |
| 660 | return err; |
| 661 | } |
| 662 | |
| 663 | void snd_usb_autosuspend(struct snd_usb_audio *chip) |
| 664 | { |
Takashi Iwai | 34f3c89 | 2012-10-15 12:16:02 +0200 | [diff] [blame] | 665 | down_read(&chip->shutdown_rwsem); |
Takashi Iwai | 1ee23fe | 2014-05-02 18:17:06 +0200 | [diff] [blame^] | 666 | if (!chip->shutdown && !chip->probing && !chip->in_pm) |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 667 | usb_autopm_put_interface(chip->pm_intf); |
Takashi Iwai | 34f3c89 | 2012-10-15 12:16:02 +0200 | [diff] [blame] | 668 | up_read(&chip->shutdown_rwsem); |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 669 | } |
| 670 | |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 671 | static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message) |
| 672 | { |
| 673 | struct snd_usb_audio *chip = usb_get_intfdata(intf); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 674 | struct snd_usb_stream *as; |
Oliver Neukum | edf7de3 | 2011-03-11 13:19:43 +0100 | [diff] [blame] | 675 | struct usb_mixer_interface *mixer; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 676 | |
| 677 | if (chip == (void *)-1L) |
| 678 | return 0; |
| 679 | |
Alan Stern | 5b1b0b8 | 2011-08-19 23:49:48 +0200 | [diff] [blame] | 680 | if (!PMSG_IS_AUTO(message)) { |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 681 | snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot); |
| 682 | if (!chip->num_suspended_intf++) { |
Eldad Zack | 88766f0 | 2013-04-03 23:18:49 +0200 | [diff] [blame] | 683 | list_for_each_entry(as, &chip->pcm_list, list) { |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 684 | snd_pcm_suspend_all(as->pcm); |
Takashi Iwai | 384dc085 | 2012-09-18 14:49:31 +0200 | [diff] [blame] | 685 | as->substream[0].need_setup_ep = |
| 686 | as->substream[1].need_setup_ep = true; |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 687 | } |
Antonio Ospite | aa53f98 | 2013-01-29 12:56:30 +0100 | [diff] [blame] | 688 | } |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 689 | } else { |
| 690 | /* |
| 691 | * otherwise we keep the rest of the system in the dark |
| 692 | * to keep this transparent |
| 693 | */ |
| 694 | if (!chip->num_suspended_intf++) |
| 695 | chip->autosuspended = 1; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 696 | } |
| 697 | |
Takashi Iwai | 1c53e72 | 2014-05-02 18:14:42 +0200 | [diff] [blame] | 698 | if (chip->num_suspended_intf == 1) |
| 699 | list_for_each_entry(mixer, &chip->mixer_list, list) |
| 700 | snd_usb_mixer_suspend(mixer); |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 701 | |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 702 | return 0; |
| 703 | } |
| 704 | |
Takashi Iwai | 400362f | 2014-01-20 16:51:16 +0100 | [diff] [blame] | 705 | static int __usb_audio_resume(struct usb_interface *intf, bool reset_resume) |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 706 | { |
| 707 | struct snd_usb_audio *chip = usb_get_intfdata(intf); |
Oliver Neukum | edf7de3 | 2011-03-11 13:19:43 +0100 | [diff] [blame] | 708 | struct usb_mixer_interface *mixer; |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 709 | int err = 0; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 710 | |
| 711 | if (chip == (void *)-1L) |
| 712 | return 0; |
| 713 | if (--chip->num_suspended_intf) |
| 714 | return 0; |
Takashi Iwai | 1ee23fe | 2014-05-02 18:17:06 +0200 | [diff] [blame^] | 715 | |
| 716 | chip->in_pm = 1; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 717 | /* |
| 718 | * ALSA leaves material resumption to user space |
Oliver Neukum | edf7de3 | 2011-03-11 13:19:43 +0100 | [diff] [blame] | 719 | * we just notify and restart the mixers |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 720 | */ |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 721 | list_for_each_entry(mixer, &chip->mixer_list, list) { |
Takashi Iwai | 400362f | 2014-01-20 16:51:16 +0100 | [diff] [blame] | 722 | err = snd_usb_mixer_resume(mixer, reset_resume); |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 723 | if (err < 0) |
| 724 | goto err_out; |
| 725 | } |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 726 | |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 727 | if (!chip->autosuspended) |
| 728 | snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0); |
| 729 | chip->autosuspended = 0; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 730 | |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 731 | err_out: |
Takashi Iwai | 1ee23fe | 2014-05-02 18:17:06 +0200 | [diff] [blame^] | 732 | chip->in_pm = 0; |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 733 | return err; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 734 | } |
Takashi Iwai | 400362f | 2014-01-20 16:51:16 +0100 | [diff] [blame] | 735 | |
| 736 | static int usb_audio_resume(struct usb_interface *intf) |
| 737 | { |
| 738 | return __usb_audio_resume(intf, false); |
| 739 | } |
| 740 | |
| 741 | static int usb_audio_reset_resume(struct usb_interface *intf) |
| 742 | { |
| 743 | return __usb_audio_resume(intf, true); |
| 744 | } |
Randy Dunlap | 6407d47 | 2010-03-22 08:55:35 -0700 | [diff] [blame] | 745 | #else |
| 746 | #define usb_audio_suspend NULL |
| 747 | #define usb_audio_resume NULL |
Takashi Iwai | 400362f | 2014-01-20 16:51:16 +0100 | [diff] [blame] | 748 | #define usb_audio_reset_resume NULL |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 749 | #endif /* CONFIG_PM */ |
| 750 | |
| 751 | static struct usb_device_id usb_audio_ids [] = { |
| 752 | #include "quirks-table.h" |
| 753 | { .match_flags = (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS), |
| 754 | .bInterfaceClass = USB_CLASS_AUDIO, |
| 755 | .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL }, |
| 756 | { } /* Terminating entry */ |
| 757 | }; |
Eldad Zack | f9d3543 | 2013-04-03 23:18:50 +0200 | [diff] [blame] | 758 | MODULE_DEVICE_TABLE(usb, usb_audio_ids); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 759 | |
| 760 | /* |
| 761 | * entry point for linux usb interface |
| 762 | */ |
| 763 | |
| 764 | static struct usb_driver usb_audio_driver = { |
| 765 | .name = "snd-usb-audio", |
| 766 | .probe = usb_audio_probe, |
| 767 | .disconnect = usb_audio_disconnect, |
| 768 | .suspend = usb_audio_suspend, |
| 769 | .resume = usb_audio_resume, |
Takashi Iwai | 400362f | 2014-01-20 16:51:16 +0100 | [diff] [blame] | 770 | .reset_resume = usb_audio_reset_resume, |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 771 | .id_table = usb_audio_ids, |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 772 | .supports_autosuspend = 1, |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 773 | }; |
| 774 | |
Sachin Kamat | 6b5a7c6 | 2013-10-09 17:22:32 +0530 | [diff] [blame] | 775 | module_usb_driver(usb_audio_driver); |