Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 1 | /* |
| 2 | * This program is free software; you can redistribute it and/or modify |
| 3 | * it under the terms of the GNU General Public License as published by |
| 4 | * the Free Software Foundation; either version 2 of the License, or |
| 5 | * (at your option) any later version. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | * |
| 12 | * You should have received a copy of the GNU General Public License |
| 13 | * along with this program; if not, write to the Free Software |
| 14 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 15 | */ |
| 16 | |
| 17 | #include <linux/init.h> |
Stephen Rothwell | 9966dda | 2010-03-29 19:01:48 +1100 | [diff] [blame] | 18 | #include <linux/slab.h> |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 19 | #include <linux/ratelimit.h> |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 20 | #include <linux/usb.h> |
| 21 | #include <linux/usb/audio.h> |
Daniel Mack | 7e84789 | 2010-03-11 21:13:20 +0100 | [diff] [blame] | 22 | #include <linux/usb/audio-v2.h> |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 23 | |
| 24 | #include <sound/core.h> |
| 25 | #include <sound/pcm.h> |
| 26 | #include <sound/pcm_params.h> |
| 27 | |
| 28 | #include "usbaudio.h" |
| 29 | #include "card.h" |
| 30 | #include "quirks.h" |
| 31 | #include "debug.h" |
Daniel Mack | c731bc9 | 2011-09-14 12:46:57 +0200 | [diff] [blame] | 32 | #include "endpoint.h" |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 33 | #include "helper.h" |
| 34 | #include "pcm.h" |
Daniel Mack | 79f920f | 2010-05-31 14:51:31 +0200 | [diff] [blame] | 35 | #include "clock.h" |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 36 | #include "power.h" |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 37 | |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 38 | #define SUBSTREAM_FLAG_DATA_EP_STARTED 0 |
| 39 | #define SUBSTREAM_FLAG_SYNC_EP_STARTED 1 |
| 40 | |
Pierre-Louis Bossart | 294c4fb | 2011-09-06 19:15:34 -0500 | [diff] [blame] | 41 | /* return the estimated delay based on USB frame counters */ |
| 42 | snd_pcm_uframes_t snd_usb_pcm_delay(struct snd_usb_substream *subs, |
| 43 | unsigned int rate) |
| 44 | { |
| 45 | int current_frame_number; |
| 46 | int frame_diff; |
| 47 | int est_delay; |
| 48 | |
| 49 | current_frame_number = usb_get_current_frame_number(subs->dev); |
| 50 | /* |
| 51 | * HCD implementations use different widths, use lower 8 bits. |
| 52 | * The delay will be managed up to 256ms, which is more than |
| 53 | * enough |
| 54 | */ |
| 55 | frame_diff = (current_frame_number - subs->last_frame_number) & 0xff; |
| 56 | |
| 57 | /* Approximation based on number of samples per USB frame (ms), |
| 58 | some truncation for 44.1 but the estimate is good enough */ |
| 59 | est_delay = subs->last_delay - (frame_diff * rate / 1000); |
| 60 | if (est_delay < 0) |
| 61 | est_delay = 0; |
| 62 | return est_delay; |
| 63 | } |
| 64 | |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 65 | /* |
| 66 | * return the current pcm pointer. just based on the hwptr_done value. |
| 67 | */ |
| 68 | static snd_pcm_uframes_t snd_usb_pcm_pointer(struct snd_pcm_substream *substream) |
| 69 | { |
| 70 | struct snd_usb_substream *subs; |
| 71 | unsigned int hwptr_done; |
| 72 | |
| 73 | subs = (struct snd_usb_substream *)substream->runtime->private_data; |
| 74 | spin_lock(&subs->lock); |
| 75 | hwptr_done = subs->hwptr_done; |
Pierre-Louis Bossart | 294c4fb | 2011-09-06 19:15:34 -0500 | [diff] [blame] | 76 | substream->runtime->delay = snd_usb_pcm_delay(subs, |
| 77 | substream->runtime->rate); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 78 | spin_unlock(&subs->lock); |
| 79 | return hwptr_done / (substream->runtime->frame_bits >> 3); |
| 80 | } |
| 81 | |
| 82 | /* |
| 83 | * find a matching audio format |
| 84 | */ |
| 85 | static struct audioformat *find_format(struct snd_usb_substream *subs, unsigned int format, |
| 86 | unsigned int rate, unsigned int channels) |
| 87 | { |
| 88 | struct list_head *p; |
| 89 | struct audioformat *found = NULL; |
| 90 | int cur_attr = 0, attr; |
| 91 | |
| 92 | list_for_each(p, &subs->fmt_list) { |
| 93 | struct audioformat *fp; |
| 94 | fp = list_entry(p, struct audioformat, list); |
Clemens Ladisch | 015eb0b | 2010-03-04 19:46:15 +0100 | [diff] [blame] | 95 | if (!(fp->formats & (1uLL << format))) |
| 96 | continue; |
| 97 | if (fp->channels != channels) |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 98 | continue; |
| 99 | if (rate < fp->rate_min || rate > fp->rate_max) |
| 100 | continue; |
| 101 | if (! (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)) { |
| 102 | unsigned int i; |
| 103 | for (i = 0; i < fp->nr_rates; i++) |
| 104 | if (fp->rate_table[i] == rate) |
| 105 | break; |
| 106 | if (i >= fp->nr_rates) |
| 107 | continue; |
| 108 | } |
| 109 | attr = fp->ep_attr & USB_ENDPOINT_SYNCTYPE; |
| 110 | if (! found) { |
| 111 | found = fp; |
| 112 | cur_attr = attr; |
| 113 | continue; |
| 114 | } |
| 115 | /* avoid async out and adaptive in if the other method |
| 116 | * supports the same format. |
| 117 | * this is a workaround for the case like |
| 118 | * M-audio audiophile USB. |
| 119 | */ |
| 120 | if (attr != cur_attr) { |
| 121 | if ((attr == USB_ENDPOINT_SYNC_ASYNC && |
| 122 | subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || |
| 123 | (attr == USB_ENDPOINT_SYNC_ADAPTIVE && |
| 124 | subs->direction == SNDRV_PCM_STREAM_CAPTURE)) |
| 125 | continue; |
| 126 | if ((cur_attr == USB_ENDPOINT_SYNC_ASYNC && |
| 127 | subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || |
| 128 | (cur_attr == USB_ENDPOINT_SYNC_ADAPTIVE && |
| 129 | subs->direction == SNDRV_PCM_STREAM_CAPTURE)) { |
| 130 | found = fp; |
| 131 | cur_attr = attr; |
| 132 | continue; |
| 133 | } |
| 134 | } |
| 135 | /* find the format with the largest max. packet size */ |
| 136 | if (fp->maxpacksize > found->maxpacksize) { |
| 137 | found = fp; |
| 138 | cur_attr = attr; |
| 139 | } |
| 140 | } |
| 141 | return found; |
| 142 | } |
| 143 | |
Daniel Mack | 767d75a | 2010-03-04 19:46:17 +0100 | [diff] [blame] | 144 | static int init_pitch_v1(struct snd_usb_audio *chip, int iface, |
| 145 | struct usb_host_interface *alts, |
| 146 | struct audioformat *fmt) |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 147 | { |
Daniel Mack | 767d75a | 2010-03-04 19:46:17 +0100 | [diff] [blame] | 148 | struct usb_device *dev = chip->dev; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 149 | unsigned int ep; |
| 150 | unsigned char data[1]; |
| 151 | int err; |
| 152 | |
| 153 | ep = get_endpoint(alts, 0)->bEndpointAddress; |
Daniel Mack | 767d75a | 2010-03-04 19:46:17 +0100 | [diff] [blame] | 154 | |
Daniel Mack | 767d75a | 2010-03-04 19:46:17 +0100 | [diff] [blame] | 155 | data[0] = 1; |
| 156 | if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR, |
| 157 | USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, |
| 158 | UAC_EP_CS_ATTR_PITCH_CONTROL << 8, ep, |
Clemens Ladisch | 17d900c | 2011-09-26 21:15:27 +0200 | [diff] [blame] | 159 | data, sizeof(data))) < 0) { |
Daniel Mack | 767d75a | 2010-03-04 19:46:17 +0100 | [diff] [blame] | 160 | snd_printk(KERN_ERR "%d:%d:%d: cannot set enable PITCH\n", |
| 161 | dev->devnum, iface, ep); |
| 162 | return err; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 163 | } |
Daniel Mack | 767d75a | 2010-03-04 19:46:17 +0100 | [diff] [blame] | 164 | |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 165 | return 0; |
| 166 | } |
| 167 | |
Daniel Mack | 92c2561 | 2010-05-26 18:11:39 +0200 | [diff] [blame] | 168 | static int init_pitch_v2(struct snd_usb_audio *chip, int iface, |
| 169 | struct usb_host_interface *alts, |
| 170 | struct audioformat *fmt) |
| 171 | { |
| 172 | struct usb_device *dev = chip->dev; |
| 173 | unsigned char data[1]; |
| 174 | unsigned int ep; |
| 175 | int err; |
| 176 | |
| 177 | ep = get_endpoint(alts, 0)->bEndpointAddress; |
| 178 | |
| 179 | data[0] = 1; |
| 180 | if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC2_CS_CUR, |
| 181 | USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_OUT, |
| 182 | UAC2_EP_CS_PITCH << 8, 0, |
Clemens Ladisch | 17d900c | 2011-09-26 21:15:27 +0200 | [diff] [blame] | 183 | data, sizeof(data))) < 0) { |
Daniel Mack | 92c2561 | 2010-05-26 18:11:39 +0200 | [diff] [blame] | 184 | snd_printk(KERN_ERR "%d:%d:%d: cannot set enable PITCH (v2)\n", |
| 185 | dev->devnum, iface, fmt->altsetting); |
| 186 | return err; |
| 187 | } |
| 188 | |
| 189 | return 0; |
| 190 | } |
| 191 | |
Daniel Mack | 767d75a | 2010-03-04 19:46:17 +0100 | [diff] [blame] | 192 | /* |
Daniel Mack | 92c2561 | 2010-05-26 18:11:39 +0200 | [diff] [blame] | 193 | * initialize the pitch control and sample rate |
Daniel Mack | 767d75a | 2010-03-04 19:46:17 +0100 | [diff] [blame] | 194 | */ |
| 195 | int snd_usb_init_pitch(struct snd_usb_audio *chip, int iface, |
| 196 | struct usb_host_interface *alts, |
| 197 | struct audioformat *fmt) |
| 198 | { |
| 199 | struct usb_interface_descriptor *altsd = get_iface_desc(alts); |
| 200 | |
Daniel Mack | 92c2561 | 2010-05-26 18:11:39 +0200 | [diff] [blame] | 201 | /* if endpoint doesn't have pitch control, bail out */ |
| 202 | if (!(fmt->attributes & UAC_EP_CS_ATTR_PITCH_CONTROL)) |
| 203 | return 0; |
| 204 | |
Daniel Mack | 767d75a | 2010-03-04 19:46:17 +0100 | [diff] [blame] | 205 | switch (altsd->bInterfaceProtocol) { |
| 206 | case UAC_VERSION_1: |
Clemens Ladisch | a2acad8 | 2010-09-03 10:53:11 +0200 | [diff] [blame] | 207 | default: |
Daniel Mack | 767d75a | 2010-03-04 19:46:17 +0100 | [diff] [blame] | 208 | return init_pitch_v1(chip, iface, alts, fmt); |
| 209 | |
| 210 | case UAC_VERSION_2: |
Daniel Mack | 92c2561 | 2010-05-26 18:11:39 +0200 | [diff] [blame] | 211 | return init_pitch_v2(chip, iface, alts, fmt); |
Daniel Mack | 767d75a | 2010-03-04 19:46:17 +0100 | [diff] [blame] | 212 | } |
Daniel Mack | 767d75a | 2010-03-04 19:46:17 +0100 | [diff] [blame] | 213 | } |
| 214 | |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 215 | static int start_endpoints(struct snd_usb_substream *subs) |
| 216 | { |
| 217 | int err; |
| 218 | |
| 219 | if (!subs->data_endpoint) |
| 220 | return -EINVAL; |
| 221 | |
| 222 | if (!test_and_set_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags)) { |
| 223 | struct snd_usb_endpoint *ep = subs->data_endpoint; |
| 224 | |
| 225 | snd_printdd(KERN_DEBUG "Starting data EP @%p\n", ep); |
| 226 | |
| 227 | ep->data_subs = subs; |
| 228 | err = snd_usb_endpoint_start(ep); |
| 229 | if (err < 0) { |
| 230 | clear_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags); |
| 231 | return err; |
| 232 | } |
| 233 | } |
| 234 | |
| 235 | if (subs->sync_endpoint && |
| 236 | !test_and_set_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags)) { |
| 237 | struct snd_usb_endpoint *ep = subs->sync_endpoint; |
| 238 | |
| 239 | snd_printdd(KERN_DEBUG "Starting sync EP @%p\n", ep); |
| 240 | |
| 241 | ep->sync_slave = subs->data_endpoint; |
| 242 | err = snd_usb_endpoint_start(ep); |
| 243 | if (err < 0) { |
| 244 | clear_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags); |
| 245 | return err; |
| 246 | } |
| 247 | } |
| 248 | |
| 249 | return 0; |
| 250 | } |
| 251 | |
| 252 | static void stop_endpoints(struct snd_usb_substream *subs, |
| 253 | int force, int can_sleep, int wait) |
| 254 | { |
| 255 | if (test_and_clear_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags)) |
| 256 | snd_usb_endpoint_stop(subs->sync_endpoint, |
| 257 | force, can_sleep, wait); |
| 258 | |
| 259 | if (test_and_clear_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags)) |
| 260 | snd_usb_endpoint_stop(subs->data_endpoint, |
| 261 | force, can_sleep, wait); |
| 262 | } |
| 263 | |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 264 | static int deactivate_endpoints(struct snd_usb_substream *subs) |
| 265 | { |
| 266 | int reta, retb; |
| 267 | |
| 268 | reta = snd_usb_endpoint_deactivate(subs->sync_endpoint); |
| 269 | retb = snd_usb_endpoint_deactivate(subs->data_endpoint); |
| 270 | |
| 271 | if (reta < 0) |
| 272 | return reta; |
| 273 | |
| 274 | if (retb < 0) |
| 275 | return retb; |
| 276 | |
| 277 | return 0; |
| 278 | } |
| 279 | |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 280 | /* |
| 281 | * find a matching format and set up the interface |
| 282 | */ |
| 283 | static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt) |
| 284 | { |
| 285 | struct usb_device *dev = subs->dev; |
| 286 | struct usb_host_interface *alts; |
| 287 | struct usb_interface_descriptor *altsd; |
| 288 | struct usb_interface *iface; |
| 289 | unsigned int ep, attr; |
| 290 | int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK; |
Daniel Mack | c75a8a7 | 2012-04-12 13:51:14 +0200 | [diff] [blame] | 291 | int err, implicit_fb = 0; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 292 | |
| 293 | iface = usb_ifnum_to_if(dev, fmt->iface); |
| 294 | if (WARN_ON(!iface)) |
| 295 | return -EINVAL; |
| 296 | alts = &iface->altsetting[fmt->altset_idx]; |
| 297 | altsd = get_iface_desc(alts); |
| 298 | if (WARN_ON(altsd->bAlternateSetting != fmt->altsetting)) |
| 299 | return -EINVAL; |
| 300 | |
| 301 | if (fmt == subs->cur_audiofmt) |
| 302 | return 0; |
| 303 | |
Daniel Mack | 68e67f4 | 2012-07-12 13:08:40 +0200 | [diff] [blame] | 304 | /* close the old interface */ |
| 305 | if (subs->interface >= 0 && subs->interface != fmt->iface) { |
| 306 | err = usb_set_interface(subs->dev, subs->interface, 0); |
| 307 | if (err < 0) { |
| 308 | snd_printk(KERN_ERR "%d:%d:%d: return to setting 0 failed (%d)\n", |
| 309 | dev->devnum, fmt->iface, fmt->altsetting, err); |
| 310 | return -EIO; |
| 311 | } |
| 312 | subs->interface = -1; |
| 313 | subs->altset_idx = 0; |
| 314 | } |
| 315 | |
| 316 | /* set interface */ |
| 317 | if (subs->interface != fmt->iface || |
| 318 | subs->altset_idx != fmt->altset_idx) { |
| 319 | err = usb_set_interface(dev, fmt->iface, fmt->altsetting); |
| 320 | if (err < 0) { |
| 321 | snd_printk(KERN_ERR "%d:%d:%d: usb_set_interface failed (%d)\n", |
| 322 | dev->devnum, fmt->iface, fmt->altsetting, err); |
| 323 | return -EIO; |
| 324 | } |
| 325 | snd_printdd(KERN_INFO "setting usb interface %d:%d\n", |
| 326 | fmt->iface, fmt->altsetting); |
| 327 | subs->interface = fmt->iface; |
| 328 | subs->altset_idx = fmt->altset_idx; |
| 329 | } |
| 330 | |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 331 | subs->data_endpoint = snd_usb_add_endpoint(subs->stream->chip, |
| 332 | alts, fmt->endpoint, subs->direction, |
| 333 | SND_USB_ENDPOINT_TYPE_DATA); |
| 334 | if (!subs->data_endpoint) |
| 335 | return -EINVAL; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 336 | |
| 337 | /* we need a sync pipe in async OUT or adaptive IN mode */ |
| 338 | /* check the number of EP, since some devices have broken |
| 339 | * descriptors which fool us. if it has only one EP, |
| 340 | * assume it as adaptive-out or sync-in. |
| 341 | */ |
| 342 | attr = fmt->ep_attr & USB_ENDPOINT_SYNCTYPE; |
Daniel Mack | c75a8a7 | 2012-04-12 13:51:14 +0200 | [diff] [blame] | 343 | |
| 344 | switch (subs->stream->chip->usb_id) { |
| 345 | case USB_ID(0x0763, 0x2080): /* M-Audio FastTrack Ultra */ |
| 346 | case USB_ID(0x0763, 0x2081): |
| 347 | if (is_playback) { |
| 348 | implicit_fb = 1; |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 349 | ep = 0x81; |
| 350 | iface = usb_ifnum_to_if(dev, 2); |
Daniel Mack | c75a8a7 | 2012-04-12 13:51:14 +0200 | [diff] [blame] | 351 | |
| 352 | if (!iface || iface->num_altsetting == 0) |
| 353 | return -EINVAL; |
| 354 | |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 355 | alts = &iface->altsetting[1]; |
| 356 | goto add_sync_ep; |
| 357 | } |
Daniel Mack | c75a8a7 | 2012-04-12 13:51:14 +0200 | [diff] [blame] | 358 | } |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 359 | |
Daniel Mack | c75a8a7 | 2012-04-12 13:51:14 +0200 | [diff] [blame] | 360 | if (((is_playback && attr == USB_ENDPOINT_SYNC_ASYNC) || |
| 361 | (!is_playback && attr == USB_ENDPOINT_SYNC_ADAPTIVE)) && |
| 362 | altsd->bNumEndpoints >= 2) { |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 363 | /* check sync-pipe endpoint */ |
| 364 | /* ... and check descriptor size before accessing bSynchAddress |
| 365 | because there is a version of the SB Audigy 2 NX firmware lacking |
| 366 | the audio fields in the endpoint descriptors */ |
| 367 | if ((get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != 0x01 || |
| 368 | (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && |
Daniel Mack | c75a8a7 | 2012-04-12 13:51:14 +0200 | [diff] [blame] | 369 | get_endpoint(alts, 1)->bSynchAddress != 0 && |
| 370 | !implicit_fb)) { |
Daniel Mack | 7fb75db | 2012-06-17 13:44:27 +0200 | [diff] [blame] | 371 | snd_printk(KERN_ERR "%d:%d:%d : invalid sync pipe. bmAttributes %02x, bLength %d, bSynchAddress %02x\n", |
| 372 | dev->devnum, fmt->iface, fmt->altsetting, |
| 373 | get_endpoint(alts, 1)->bmAttributes, |
| 374 | get_endpoint(alts, 1)->bLength, |
| 375 | get_endpoint(alts, 1)->bSynchAddress); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 376 | return -EINVAL; |
| 377 | } |
| 378 | ep = get_endpoint(alts, 1)->bEndpointAddress; |
Daniel Mack | 7fb75db | 2012-06-17 13:44:27 +0200 | [diff] [blame] | 379 | if (!implicit_fb && |
| 380 | get_endpoint(alts, 0)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 381 | (( is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress | USB_DIR_IN)) || |
Daniel Mack | 7fb75db | 2012-06-17 13:44:27 +0200 | [diff] [blame] | 382 | (!is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress & ~USB_DIR_IN)))) { |
| 383 | snd_printk(KERN_ERR "%d:%d:%d : invalid sync pipe. is_playback %d, ep %02x, bSynchAddress %02x\n", |
| 384 | dev->devnum, fmt->iface, fmt->altsetting, |
| 385 | is_playback, ep, get_endpoint(alts, 0)->bSynchAddress); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 386 | return -EINVAL; |
| 387 | } |
Daniel Mack | c75a8a7 | 2012-04-12 13:51:14 +0200 | [diff] [blame] | 388 | |
| 389 | implicit_fb = (get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_USAGE_MASK) |
| 390 | == USB_ENDPOINT_USAGE_IMPLICIT_FB; |
| 391 | |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 392 | add_sync_ep: |
| 393 | subs->sync_endpoint = snd_usb_add_endpoint(subs->stream->chip, |
| 394 | alts, ep, !subs->direction, |
Daniel Mack | c75a8a7 | 2012-04-12 13:51:14 +0200 | [diff] [blame] | 395 | implicit_fb ? |
| 396 | SND_USB_ENDPOINT_TYPE_DATA : |
| 397 | SND_USB_ENDPOINT_TYPE_SYNC); |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 398 | if (!subs->sync_endpoint) |
| 399 | return -EINVAL; |
| 400 | |
| 401 | subs->data_endpoint->sync_master = subs->sync_endpoint; |
| 402 | } |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 403 | |
Takashi Iwai | 9e9b594 | 2012-07-06 08:11:43 +0200 | [diff] [blame] | 404 | if ((err = snd_usb_init_pitch(subs->stream->chip, fmt->iface, alts, fmt)) < 0) |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 405 | return err; |
| 406 | |
| 407 | subs->cur_audiofmt = fmt; |
| 408 | |
| 409 | snd_usb_set_format_quirk(subs, fmt); |
| 410 | |
| 411 | #if 0 |
| 412 | printk(KERN_DEBUG |
| 413 | "setting done: format = %d, rate = %d..%d, channels = %d\n", |
| 414 | fmt->format, fmt->rate_min, fmt->rate_max, fmt->channels); |
| 415 | printk(KERN_DEBUG |
| 416 | " datapipe = 0x%0x, syncpipe = 0x%0x\n", |
| 417 | subs->datapipe, subs->syncpipe); |
| 418 | #endif |
| 419 | |
| 420 | return 0; |
| 421 | } |
| 422 | |
| 423 | /* |
| 424 | * hw_params callback |
| 425 | * |
| 426 | * allocate a buffer and set the given audio format. |
| 427 | * |
| 428 | * so far we use a physically linear buffer although packetize transfer |
| 429 | * doesn't need a continuous area. |
| 430 | * if sg buffer is supported on the later version of alsa, we'll follow |
| 431 | * that. |
| 432 | */ |
| 433 | static int snd_usb_hw_params(struct snd_pcm_substream *substream, |
| 434 | struct snd_pcm_hw_params *hw_params) |
| 435 | { |
| 436 | struct snd_usb_substream *subs = substream->runtime->private_data; |
| 437 | struct audioformat *fmt; |
| 438 | unsigned int channels, rate, format; |
| 439 | int ret, changed; |
| 440 | |
| 441 | ret = snd_pcm_lib_alloc_vmalloc_buffer(substream, |
| 442 | params_buffer_bytes(hw_params)); |
| 443 | if (ret < 0) |
| 444 | return ret; |
| 445 | |
| 446 | format = params_format(hw_params); |
| 447 | rate = params_rate(hw_params); |
| 448 | channels = params_channels(hw_params); |
| 449 | fmt = find_format(subs, format, rate, channels); |
| 450 | if (!fmt) { |
| 451 | snd_printd(KERN_DEBUG "cannot set format: format = %#x, rate = %d, channels = %d\n", |
| 452 | format, rate, channels); |
| 453 | return -EINVAL; |
| 454 | } |
| 455 | |
| 456 | changed = subs->cur_audiofmt != fmt || |
| 457 | subs->period_bytes != params_period_bytes(hw_params) || |
| 458 | subs->cur_rate != rate; |
| 459 | if ((ret = set_format(subs, fmt)) < 0) |
| 460 | return ret; |
| 461 | |
| 462 | if (subs->cur_rate != rate) { |
| 463 | struct usb_host_interface *alts; |
| 464 | struct usb_interface *iface; |
| 465 | iface = usb_ifnum_to_if(subs->dev, fmt->iface); |
| 466 | alts = &iface->altsetting[fmt->altset_idx]; |
Takashi Iwai | 9e9b594 | 2012-07-06 08:11:43 +0200 | [diff] [blame] | 467 | ret = snd_usb_init_sample_rate(subs->stream->chip, fmt->iface, alts, fmt, rate); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 468 | if (ret < 0) |
| 469 | return ret; |
| 470 | subs->cur_rate = rate; |
| 471 | } |
| 472 | |
| 473 | if (changed) { |
Takashi Iwai | 382225e | 2011-02-22 10:21:18 +0100 | [diff] [blame] | 474 | mutex_lock(&subs->stream->chip->shutdown_mutex); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 475 | /* format changed */ |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 476 | stop_endpoints(subs, 0, 0, 0); |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 477 | ret = snd_usb_endpoint_set_params(subs->data_endpoint, hw_params, fmt, |
| 478 | subs->sync_endpoint); |
| 479 | if (ret < 0) |
| 480 | goto unlock; |
| 481 | |
| 482 | if (subs->sync_endpoint) |
| 483 | ret = snd_usb_endpoint_set_params(subs->sync_endpoint, |
| 484 | hw_params, fmt, NULL); |
| 485 | unlock: |
Takashi Iwai | 382225e | 2011-02-22 10:21:18 +0100 | [diff] [blame] | 486 | mutex_unlock(&subs->stream->chip->shutdown_mutex); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 487 | } |
| 488 | |
Daniel Mack | 97f8d3b | 2012-05-21 12:47:36 +0200 | [diff] [blame] | 489 | if (ret == 0) { |
| 490 | subs->interface = fmt->iface; |
| 491 | subs->altset_idx = fmt->altset_idx; |
| 492 | } |
| 493 | |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 494 | return ret; |
| 495 | } |
| 496 | |
| 497 | /* |
| 498 | * hw_free callback |
| 499 | * |
| 500 | * reset the audio format and release the buffer |
| 501 | */ |
| 502 | static int snd_usb_hw_free(struct snd_pcm_substream *substream) |
| 503 | { |
| 504 | struct snd_usb_substream *subs = substream->runtime->private_data; |
| 505 | |
| 506 | subs->cur_audiofmt = NULL; |
| 507 | subs->cur_rate = 0; |
| 508 | subs->period_bytes = 0; |
Takashi Iwai | 382225e | 2011-02-22 10:21:18 +0100 | [diff] [blame] | 509 | mutex_lock(&subs->stream->chip->shutdown_mutex); |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 510 | stop_endpoints(subs, 0, 1, 1); |
Daniel Mack | 68e67f4 | 2012-07-12 13:08:40 +0200 | [diff] [blame] | 511 | deactivate_endpoints(subs); |
Takashi Iwai | 382225e | 2011-02-22 10:21:18 +0100 | [diff] [blame] | 512 | mutex_unlock(&subs->stream->chip->shutdown_mutex); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 513 | return snd_pcm_lib_free_vmalloc_buffer(substream); |
| 514 | } |
| 515 | |
| 516 | /* |
| 517 | * prepare callback |
| 518 | * |
| 519 | * only a few subtle things... |
| 520 | */ |
| 521 | static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream) |
| 522 | { |
| 523 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 524 | struct snd_usb_substream *subs = runtime->private_data; |
| 525 | |
| 526 | if (! subs->cur_audiofmt) { |
| 527 | snd_printk(KERN_ERR "usbaudio: no format is specified!\n"); |
| 528 | return -ENXIO; |
| 529 | } |
| 530 | |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 531 | if (snd_BUG_ON(!subs->data_endpoint)) |
| 532 | return -EIO; |
| 533 | |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 534 | /* some unit conversions in runtime */ |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 535 | subs->data_endpoint->maxframesize = |
| 536 | bytes_to_frames(runtime, subs->data_endpoint->maxpacksize); |
| 537 | subs->data_endpoint->curframesize = |
| 538 | bytes_to_frames(runtime, subs->data_endpoint->curpacksize); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 539 | |
| 540 | /* reset the pointer */ |
| 541 | subs->hwptr_done = 0; |
| 542 | subs->transfer_done = 0; |
Pierre-Louis Bossart | 294c4fb | 2011-09-06 19:15:34 -0500 | [diff] [blame] | 543 | subs->last_delay = 0; |
| 544 | subs->last_frame_number = 0; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 545 | runtime->delay = 0; |
| 546 | |
Takashi Iwai | e9ba389 | 2012-08-15 12:32:00 +0200 | [diff] [blame] | 547 | /* clear the pending deactivation on the target EPs */ |
| 548 | deactivate_endpoints(subs); |
| 549 | |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 550 | /* for playback, submit the URBs now; otherwise, the first hwptr_done |
| 551 | * updates for all URBs would happen at the same time when starting */ |
| 552 | if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) |
| 553 | return start_endpoints(subs); |
| 554 | |
| 555 | return 0; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 556 | } |
| 557 | |
| 558 | static struct snd_pcm_hardware snd_usb_hardware = |
| 559 | { |
| 560 | .info = SNDRV_PCM_INFO_MMAP | |
| 561 | SNDRV_PCM_INFO_MMAP_VALID | |
| 562 | SNDRV_PCM_INFO_BATCH | |
| 563 | SNDRV_PCM_INFO_INTERLEAVED | |
| 564 | SNDRV_PCM_INFO_BLOCK_TRANSFER | |
| 565 | SNDRV_PCM_INFO_PAUSE, |
| 566 | .buffer_bytes_max = 1024 * 1024, |
| 567 | .period_bytes_min = 64, |
| 568 | .period_bytes_max = 512 * 1024, |
| 569 | .periods_min = 2, |
| 570 | .periods_max = 1024, |
| 571 | }; |
| 572 | |
| 573 | static int hw_check_valid_format(struct snd_usb_substream *subs, |
| 574 | struct snd_pcm_hw_params *params, |
| 575 | struct audioformat *fp) |
| 576 | { |
| 577 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); |
| 578 | struct snd_interval *ct = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); |
| 579 | struct snd_mask *fmts = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); |
| 580 | struct snd_interval *pt = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME); |
Clemens Ladisch | 015eb0b | 2010-03-04 19:46:15 +0100 | [diff] [blame] | 581 | struct snd_mask check_fmts; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 582 | unsigned int ptime; |
| 583 | |
| 584 | /* check the format */ |
Clemens Ladisch | 015eb0b | 2010-03-04 19:46:15 +0100 | [diff] [blame] | 585 | snd_mask_none(&check_fmts); |
| 586 | check_fmts.bits[0] = (u32)fp->formats; |
| 587 | check_fmts.bits[1] = (u32)(fp->formats >> 32); |
| 588 | snd_mask_intersect(&check_fmts, fmts); |
| 589 | if (snd_mask_empty(&check_fmts)) { |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 590 | hwc_debug(" > check: no supported format %d\n", fp->format); |
| 591 | return 0; |
| 592 | } |
| 593 | /* check the channels */ |
| 594 | if (fp->channels < ct->min || fp->channels > ct->max) { |
| 595 | hwc_debug(" > check: no valid channels %d (%d/%d)\n", fp->channels, ct->min, ct->max); |
| 596 | return 0; |
| 597 | } |
| 598 | /* check the rate is within the range */ |
| 599 | if (fp->rate_min > it->max || (fp->rate_min == it->max && it->openmax)) { |
| 600 | hwc_debug(" > check: rate_min %d > max %d\n", fp->rate_min, it->max); |
| 601 | return 0; |
| 602 | } |
| 603 | if (fp->rate_max < it->min || (fp->rate_max == it->min && it->openmin)) { |
| 604 | hwc_debug(" > check: rate_max %d < min %d\n", fp->rate_max, it->min); |
| 605 | return 0; |
| 606 | } |
| 607 | /* check whether the period time is >= the data packet interval */ |
Paul Zimmerman | 4f4e8f6 | 2010-08-13 12:42:07 -0700 | [diff] [blame] | 608 | if (snd_usb_get_speed(subs->dev) != USB_SPEED_FULL) { |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 609 | ptime = 125 * (1 << fp->datainterval); |
| 610 | if (ptime > pt->max || (ptime == pt->max && pt->openmax)) { |
| 611 | hwc_debug(" > check: ptime %u > max %u\n", ptime, pt->max); |
| 612 | return 0; |
| 613 | } |
| 614 | } |
| 615 | return 1; |
| 616 | } |
| 617 | |
| 618 | static int hw_rule_rate(struct snd_pcm_hw_params *params, |
| 619 | struct snd_pcm_hw_rule *rule) |
| 620 | { |
| 621 | struct snd_usb_substream *subs = rule->private; |
| 622 | struct list_head *p; |
| 623 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); |
| 624 | unsigned int rmin, rmax; |
| 625 | int changed; |
| 626 | |
| 627 | hwc_debug("hw_rule_rate: (%d,%d)\n", it->min, it->max); |
| 628 | changed = 0; |
| 629 | rmin = rmax = 0; |
| 630 | list_for_each(p, &subs->fmt_list) { |
| 631 | struct audioformat *fp; |
| 632 | fp = list_entry(p, struct audioformat, list); |
| 633 | if (!hw_check_valid_format(subs, params, fp)) |
| 634 | continue; |
| 635 | if (changed++) { |
| 636 | if (rmin > fp->rate_min) |
| 637 | rmin = fp->rate_min; |
| 638 | if (rmax < fp->rate_max) |
| 639 | rmax = fp->rate_max; |
| 640 | } else { |
| 641 | rmin = fp->rate_min; |
| 642 | rmax = fp->rate_max; |
| 643 | } |
| 644 | } |
| 645 | |
| 646 | if (!changed) { |
| 647 | hwc_debug(" --> get empty\n"); |
| 648 | it->empty = 1; |
| 649 | return -EINVAL; |
| 650 | } |
| 651 | |
| 652 | changed = 0; |
| 653 | if (it->min < rmin) { |
| 654 | it->min = rmin; |
| 655 | it->openmin = 0; |
| 656 | changed = 1; |
| 657 | } |
| 658 | if (it->max > rmax) { |
| 659 | it->max = rmax; |
| 660 | it->openmax = 0; |
| 661 | changed = 1; |
| 662 | } |
| 663 | if (snd_interval_checkempty(it)) { |
| 664 | it->empty = 1; |
| 665 | return -EINVAL; |
| 666 | } |
| 667 | hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); |
| 668 | return changed; |
| 669 | } |
| 670 | |
| 671 | |
| 672 | static int hw_rule_channels(struct snd_pcm_hw_params *params, |
| 673 | struct snd_pcm_hw_rule *rule) |
| 674 | { |
| 675 | struct snd_usb_substream *subs = rule->private; |
| 676 | struct list_head *p; |
| 677 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); |
| 678 | unsigned int rmin, rmax; |
| 679 | int changed; |
| 680 | |
| 681 | hwc_debug("hw_rule_channels: (%d,%d)\n", it->min, it->max); |
| 682 | changed = 0; |
| 683 | rmin = rmax = 0; |
| 684 | list_for_each(p, &subs->fmt_list) { |
| 685 | struct audioformat *fp; |
| 686 | fp = list_entry(p, struct audioformat, list); |
| 687 | if (!hw_check_valid_format(subs, params, fp)) |
| 688 | continue; |
| 689 | if (changed++) { |
| 690 | if (rmin > fp->channels) |
| 691 | rmin = fp->channels; |
| 692 | if (rmax < fp->channels) |
| 693 | rmax = fp->channels; |
| 694 | } else { |
| 695 | rmin = fp->channels; |
| 696 | rmax = fp->channels; |
| 697 | } |
| 698 | } |
| 699 | |
| 700 | if (!changed) { |
| 701 | hwc_debug(" --> get empty\n"); |
| 702 | it->empty = 1; |
| 703 | return -EINVAL; |
| 704 | } |
| 705 | |
| 706 | changed = 0; |
| 707 | if (it->min < rmin) { |
| 708 | it->min = rmin; |
| 709 | it->openmin = 0; |
| 710 | changed = 1; |
| 711 | } |
| 712 | if (it->max > rmax) { |
| 713 | it->max = rmax; |
| 714 | it->openmax = 0; |
| 715 | changed = 1; |
| 716 | } |
| 717 | if (snd_interval_checkempty(it)) { |
| 718 | it->empty = 1; |
| 719 | return -EINVAL; |
| 720 | } |
| 721 | hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); |
| 722 | return changed; |
| 723 | } |
| 724 | |
| 725 | static int hw_rule_format(struct snd_pcm_hw_params *params, |
| 726 | struct snd_pcm_hw_rule *rule) |
| 727 | { |
| 728 | struct snd_usb_substream *subs = rule->private; |
| 729 | struct list_head *p; |
| 730 | struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); |
| 731 | u64 fbits; |
| 732 | u32 oldbits[2]; |
| 733 | int changed; |
| 734 | |
| 735 | hwc_debug("hw_rule_format: %x:%x\n", fmt->bits[0], fmt->bits[1]); |
| 736 | fbits = 0; |
| 737 | list_for_each(p, &subs->fmt_list) { |
| 738 | struct audioformat *fp; |
| 739 | fp = list_entry(p, struct audioformat, list); |
| 740 | if (!hw_check_valid_format(subs, params, fp)) |
| 741 | continue; |
Clemens Ladisch | 015eb0b | 2010-03-04 19:46:15 +0100 | [diff] [blame] | 742 | fbits |= fp->formats; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 743 | } |
| 744 | |
| 745 | oldbits[0] = fmt->bits[0]; |
| 746 | oldbits[1] = fmt->bits[1]; |
| 747 | fmt->bits[0] &= (u32)fbits; |
| 748 | fmt->bits[1] &= (u32)(fbits >> 32); |
| 749 | if (!fmt->bits[0] && !fmt->bits[1]) { |
| 750 | hwc_debug(" --> get empty\n"); |
| 751 | return -EINVAL; |
| 752 | } |
| 753 | changed = (oldbits[0] != fmt->bits[0] || oldbits[1] != fmt->bits[1]); |
| 754 | hwc_debug(" --> %x:%x (changed = %d)\n", fmt->bits[0], fmt->bits[1], changed); |
| 755 | return changed; |
| 756 | } |
| 757 | |
| 758 | static int hw_rule_period_time(struct snd_pcm_hw_params *params, |
| 759 | struct snd_pcm_hw_rule *rule) |
| 760 | { |
| 761 | struct snd_usb_substream *subs = rule->private; |
| 762 | struct audioformat *fp; |
| 763 | struct snd_interval *it; |
| 764 | unsigned char min_datainterval; |
| 765 | unsigned int pmin; |
| 766 | int changed; |
| 767 | |
| 768 | it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME); |
| 769 | hwc_debug("hw_rule_period_time: (%u,%u)\n", it->min, it->max); |
| 770 | min_datainterval = 0xff; |
| 771 | list_for_each_entry(fp, &subs->fmt_list, list) { |
| 772 | if (!hw_check_valid_format(subs, params, fp)) |
| 773 | continue; |
| 774 | min_datainterval = min(min_datainterval, fp->datainterval); |
| 775 | } |
| 776 | if (min_datainterval == 0xff) { |
Uwe Kleine-König | a7ce2e0 | 2010-07-12 17:15:44 +0200 | [diff] [blame] | 777 | hwc_debug(" --> get empty\n"); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 778 | it->empty = 1; |
| 779 | return -EINVAL; |
| 780 | } |
| 781 | pmin = 125 * (1 << min_datainterval); |
| 782 | changed = 0; |
| 783 | if (it->min < pmin) { |
| 784 | it->min = pmin; |
| 785 | it->openmin = 0; |
| 786 | changed = 1; |
| 787 | } |
| 788 | if (snd_interval_checkempty(it)) { |
| 789 | it->empty = 1; |
| 790 | return -EINVAL; |
| 791 | } |
| 792 | hwc_debug(" --> (%u,%u) (changed = %d)\n", it->min, it->max, changed); |
| 793 | return changed; |
| 794 | } |
| 795 | |
| 796 | /* |
| 797 | * If the device supports unusual bit rates, does the request meet these? |
| 798 | */ |
| 799 | static int snd_usb_pcm_check_knot(struct snd_pcm_runtime *runtime, |
| 800 | struct snd_usb_substream *subs) |
| 801 | { |
| 802 | struct audioformat *fp; |
Takashi Iwai | 0717d0f | 2012-03-15 16:14:38 +0100 | [diff] [blame] | 803 | int *rate_list; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 804 | int count = 0, needs_knot = 0; |
| 805 | int err; |
| 806 | |
Clemens Ladisch | 5cd5d7c | 2012-05-18 18:00:43 +0200 | [diff] [blame] | 807 | kfree(subs->rate_list.list); |
| 808 | subs->rate_list.list = NULL; |
| 809 | |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 810 | list_for_each_entry(fp, &subs->fmt_list, list) { |
| 811 | if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) |
| 812 | return 0; |
| 813 | count += fp->nr_rates; |
| 814 | if (fp->rates & SNDRV_PCM_RATE_KNOT) |
| 815 | needs_knot = 1; |
| 816 | } |
| 817 | if (!needs_knot) |
| 818 | return 0; |
| 819 | |
Takashi Iwai | 0717d0f | 2012-03-15 16:14:38 +0100 | [diff] [blame] | 820 | subs->rate_list.list = rate_list = |
| 821 | kmalloc(sizeof(int) * count, GFP_KERNEL); |
Jesper Juhl | 8a8d56b | 2010-10-29 20:40:23 +0200 | [diff] [blame] | 822 | if (!subs->rate_list.list) |
| 823 | return -ENOMEM; |
| 824 | subs->rate_list.count = count; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 825 | subs->rate_list.mask = 0; |
| 826 | count = 0; |
| 827 | list_for_each_entry(fp, &subs->fmt_list, list) { |
| 828 | int i; |
| 829 | for (i = 0; i < fp->nr_rates; i++) |
Takashi Iwai | 0717d0f | 2012-03-15 16:14:38 +0100 | [diff] [blame] | 830 | rate_list[count++] = fp->rate_table[i]; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 831 | } |
| 832 | err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, |
| 833 | &subs->rate_list); |
| 834 | if (err < 0) |
| 835 | return err; |
| 836 | |
| 837 | return 0; |
| 838 | } |
| 839 | |
| 840 | |
| 841 | /* |
| 842 | * set up the runtime hardware information. |
| 843 | */ |
| 844 | |
| 845 | static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substream *subs) |
| 846 | { |
| 847 | struct list_head *p; |
| 848 | unsigned int pt, ptmin; |
| 849 | int param_period_time_if_needed; |
| 850 | int err; |
| 851 | |
| 852 | runtime->hw.formats = subs->formats; |
| 853 | |
| 854 | runtime->hw.rate_min = 0x7fffffff; |
| 855 | runtime->hw.rate_max = 0; |
| 856 | runtime->hw.channels_min = 256; |
| 857 | runtime->hw.channels_max = 0; |
| 858 | runtime->hw.rates = 0; |
| 859 | ptmin = UINT_MAX; |
| 860 | /* check min/max rates and channels */ |
| 861 | list_for_each(p, &subs->fmt_list) { |
| 862 | struct audioformat *fp; |
| 863 | fp = list_entry(p, struct audioformat, list); |
| 864 | runtime->hw.rates |= fp->rates; |
| 865 | if (runtime->hw.rate_min > fp->rate_min) |
| 866 | runtime->hw.rate_min = fp->rate_min; |
| 867 | if (runtime->hw.rate_max < fp->rate_max) |
| 868 | runtime->hw.rate_max = fp->rate_max; |
| 869 | if (runtime->hw.channels_min > fp->channels) |
| 870 | runtime->hw.channels_min = fp->channels; |
| 871 | if (runtime->hw.channels_max < fp->channels) |
| 872 | runtime->hw.channels_max = fp->channels; |
| 873 | if (fp->fmt_type == UAC_FORMAT_TYPE_II && fp->frame_size > 0) { |
| 874 | /* FIXME: there might be more than one audio formats... */ |
| 875 | runtime->hw.period_bytes_min = runtime->hw.period_bytes_max = |
| 876 | fp->frame_size; |
| 877 | } |
| 878 | pt = 125 * (1 << fp->datainterval); |
| 879 | ptmin = min(ptmin, pt); |
| 880 | } |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 881 | err = snd_usb_autoresume(subs->stream->chip); |
| 882 | if (err < 0) |
| 883 | return err; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 884 | |
| 885 | param_period_time_if_needed = SNDRV_PCM_HW_PARAM_PERIOD_TIME; |
Paul Zimmerman | 4f4e8f6 | 2010-08-13 12:42:07 -0700 | [diff] [blame] | 886 | if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL) |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 887 | /* full speed devices have fixed data packet interval */ |
| 888 | ptmin = 1000; |
| 889 | if (ptmin == 1000) |
| 890 | /* if period time doesn't go below 1 ms, no rules needed */ |
| 891 | param_period_time_if_needed = -1; |
| 892 | snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, |
| 893 | ptmin, UINT_MAX); |
| 894 | |
| 895 | if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, |
| 896 | hw_rule_rate, subs, |
| 897 | SNDRV_PCM_HW_PARAM_FORMAT, |
| 898 | SNDRV_PCM_HW_PARAM_CHANNELS, |
| 899 | param_period_time_if_needed, |
| 900 | -1)) < 0) |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 901 | goto rep_err; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 902 | if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, |
| 903 | hw_rule_channels, subs, |
| 904 | SNDRV_PCM_HW_PARAM_FORMAT, |
| 905 | SNDRV_PCM_HW_PARAM_RATE, |
| 906 | param_period_time_if_needed, |
| 907 | -1)) < 0) |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 908 | goto rep_err; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 909 | if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, |
| 910 | hw_rule_format, subs, |
| 911 | SNDRV_PCM_HW_PARAM_RATE, |
| 912 | SNDRV_PCM_HW_PARAM_CHANNELS, |
| 913 | param_period_time_if_needed, |
| 914 | -1)) < 0) |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 915 | goto rep_err; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 916 | if (param_period_time_if_needed >= 0) { |
| 917 | err = snd_pcm_hw_rule_add(runtime, 0, |
| 918 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, |
| 919 | hw_rule_period_time, subs, |
| 920 | SNDRV_PCM_HW_PARAM_FORMAT, |
| 921 | SNDRV_PCM_HW_PARAM_CHANNELS, |
| 922 | SNDRV_PCM_HW_PARAM_RATE, |
| 923 | -1); |
| 924 | if (err < 0) |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 925 | goto rep_err; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 926 | } |
| 927 | if ((err = snd_usb_pcm_check_knot(runtime, subs)) < 0) |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 928 | goto rep_err; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 929 | return 0; |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 930 | |
| 931 | rep_err: |
| 932 | snd_usb_autosuspend(subs->stream->chip); |
| 933 | return err; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 934 | } |
| 935 | |
| 936 | static int snd_usb_pcm_open(struct snd_pcm_substream *substream, int direction) |
| 937 | { |
| 938 | struct snd_usb_stream *as = snd_pcm_substream_chip(substream); |
| 939 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 940 | struct snd_usb_substream *subs = &as->substream[direction]; |
| 941 | |
| 942 | subs->interface = -1; |
Clemens Ladisch | e11b4e0 | 2010-03-04 19:46:14 +0100 | [diff] [blame] | 943 | subs->altset_idx = 0; |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 944 | runtime->hw = snd_usb_hardware; |
| 945 | runtime->private_data = subs; |
| 946 | subs->pcm_substream = substream; |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 947 | /* runtime PM is also done there */ |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 948 | return setup_hw_info(runtime, subs); |
| 949 | } |
| 950 | |
| 951 | static int snd_usb_pcm_close(struct snd_pcm_substream *substream, int direction) |
| 952 | { |
| 953 | struct snd_usb_stream *as = snd_pcm_substream_chip(substream); |
| 954 | struct snd_usb_substream *subs = &as->substream[direction]; |
| 955 | |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 956 | stop_endpoints(subs, 0, 0, 0); |
Daniel Mack | 68e67f4 | 2012-07-12 13:08:40 +0200 | [diff] [blame] | 957 | |
| 958 | if (!as->chip->shutdown && subs->interface >= 0) { |
| 959 | usb_set_interface(subs->dev, subs->interface, 0); |
| 960 | subs->interface = -1; |
| 961 | } |
| 962 | |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 963 | subs->pcm_substream = NULL; |
Oliver Neukum | 88a8516 | 2011-03-11 14:51:12 +0100 | [diff] [blame] | 964 | snd_usb_autosuspend(subs->stream->chip); |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 965 | |
Daniel Mack | 68e67f4 | 2012-07-12 13:08:40 +0200 | [diff] [blame] | 966 | return 0; |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 967 | } |
| 968 | |
| 969 | /* Since a URB can handle only a single linear buffer, we must use double |
| 970 | * buffering when the data to be transferred overflows the buffer boundary. |
| 971 | * To avoid inconsistencies when updating hwptr_done, we use double buffering |
| 972 | * for all URBs. |
| 973 | */ |
| 974 | static void retire_capture_urb(struct snd_usb_substream *subs, |
| 975 | struct urb *urb) |
| 976 | { |
| 977 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; |
| 978 | unsigned int stride, frames, bytes, oldptr; |
| 979 | int i, period_elapsed = 0; |
| 980 | unsigned long flags; |
| 981 | unsigned char *cp; |
| 982 | |
| 983 | stride = runtime->frame_bits >> 3; |
| 984 | |
| 985 | for (i = 0; i < urb->number_of_packets; i++) { |
| 986 | cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset; |
| 987 | if (urb->iso_frame_desc[i].status && printk_ratelimit()) { |
| 988 | snd_printdd(KERN_ERR "frame %d active: %d\n", i, urb->iso_frame_desc[i].status); |
| 989 | // continue; |
| 990 | } |
| 991 | bytes = urb->iso_frame_desc[i].actual_length; |
| 992 | frames = bytes / stride; |
| 993 | if (!subs->txfr_quirk) |
| 994 | bytes = frames * stride; |
| 995 | if (bytes % (runtime->sample_bits >> 3) != 0) { |
| 996 | #ifdef CONFIG_SND_DEBUG_VERBOSE |
| 997 | int oldbytes = bytes; |
| 998 | #endif |
| 999 | bytes = frames * stride; |
| 1000 | snd_printdd(KERN_ERR "Corrected urb data len. %d->%d\n", |
| 1001 | oldbytes, bytes); |
| 1002 | } |
| 1003 | /* update the current pointer */ |
| 1004 | spin_lock_irqsave(&subs->lock, flags); |
| 1005 | oldptr = subs->hwptr_done; |
| 1006 | subs->hwptr_done += bytes; |
| 1007 | if (subs->hwptr_done >= runtime->buffer_size * stride) |
| 1008 | subs->hwptr_done -= runtime->buffer_size * stride; |
| 1009 | frames = (bytes + (oldptr % stride)) / stride; |
| 1010 | subs->transfer_done += frames; |
| 1011 | if (subs->transfer_done >= runtime->period_size) { |
| 1012 | subs->transfer_done -= runtime->period_size; |
| 1013 | period_elapsed = 1; |
| 1014 | } |
| 1015 | spin_unlock_irqrestore(&subs->lock, flags); |
| 1016 | /* copy a data chunk */ |
| 1017 | if (oldptr + bytes > runtime->buffer_size * stride) { |
| 1018 | unsigned int bytes1 = |
| 1019 | runtime->buffer_size * stride - oldptr; |
| 1020 | memcpy(runtime->dma_area + oldptr, cp, bytes1); |
| 1021 | memcpy(runtime->dma_area, cp + bytes1, bytes - bytes1); |
| 1022 | } else { |
| 1023 | memcpy(runtime->dma_area + oldptr, cp, bytes); |
| 1024 | } |
| 1025 | } |
| 1026 | |
| 1027 | if (period_elapsed) |
| 1028 | snd_pcm_period_elapsed(subs->pcm_substream); |
| 1029 | } |
| 1030 | |
| 1031 | static void prepare_playback_urb(struct snd_usb_substream *subs, |
| 1032 | struct urb *urb) |
| 1033 | { |
| 1034 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; |
| 1035 | struct snd_urb_ctx *ctx = urb->context; |
| 1036 | unsigned int counts, frames, bytes; |
| 1037 | int i, stride, period_elapsed = 0; |
| 1038 | unsigned long flags; |
| 1039 | |
| 1040 | stride = runtime->frame_bits >> 3; |
| 1041 | |
| 1042 | frames = 0; |
| 1043 | urb->number_of_packets = 0; |
| 1044 | spin_lock_irqsave(&subs->lock, flags); |
| 1045 | for (i = 0; i < ctx->packets; i++) { |
| 1046 | counts = ctx->packet_size[i]; |
| 1047 | /* set up descriptor */ |
| 1048 | urb->iso_frame_desc[i].offset = frames * stride; |
| 1049 | urb->iso_frame_desc[i].length = counts * stride; |
| 1050 | frames += counts; |
| 1051 | urb->number_of_packets++; |
| 1052 | subs->transfer_done += counts; |
| 1053 | if (subs->transfer_done >= runtime->period_size) { |
| 1054 | subs->transfer_done -= runtime->period_size; |
| 1055 | period_elapsed = 1; |
| 1056 | if (subs->fmt_type == UAC_FORMAT_TYPE_II) { |
| 1057 | if (subs->transfer_done > 0) { |
| 1058 | /* FIXME: fill-max mode is not |
| 1059 | * supported yet */ |
| 1060 | frames -= subs->transfer_done; |
| 1061 | counts -= subs->transfer_done; |
| 1062 | urb->iso_frame_desc[i].length = |
| 1063 | counts * stride; |
| 1064 | subs->transfer_done = 0; |
| 1065 | } |
| 1066 | i++; |
| 1067 | if (i < ctx->packets) { |
| 1068 | /* add a transfer delimiter */ |
| 1069 | urb->iso_frame_desc[i].offset = |
| 1070 | frames * stride; |
| 1071 | urb->iso_frame_desc[i].length = 0; |
| 1072 | urb->number_of_packets++; |
| 1073 | } |
| 1074 | break; |
| 1075 | } |
| 1076 | } |
| 1077 | if (period_elapsed && |
| 1078 | !snd_usb_endpoint_implict_feedback_sink(subs->data_endpoint)) /* finish at the period boundary */ |
| 1079 | break; |
| 1080 | } |
| 1081 | bytes = frames * stride; |
| 1082 | if (subs->hwptr_done + bytes > runtime->buffer_size * stride) { |
| 1083 | /* err, the transferred area goes over buffer boundary. */ |
| 1084 | unsigned int bytes1 = |
| 1085 | runtime->buffer_size * stride - subs->hwptr_done; |
| 1086 | memcpy(urb->transfer_buffer, |
| 1087 | runtime->dma_area + subs->hwptr_done, bytes1); |
| 1088 | memcpy(urb->transfer_buffer + bytes1, |
| 1089 | runtime->dma_area, bytes - bytes1); |
| 1090 | } else { |
| 1091 | memcpy(urb->transfer_buffer, |
| 1092 | runtime->dma_area + subs->hwptr_done, bytes); |
| 1093 | } |
| 1094 | subs->hwptr_done += bytes; |
| 1095 | if (subs->hwptr_done >= runtime->buffer_size * stride) |
| 1096 | subs->hwptr_done -= runtime->buffer_size * stride; |
| 1097 | runtime->delay += frames; |
| 1098 | spin_unlock_irqrestore(&subs->lock, flags); |
| 1099 | urb->transfer_buffer_length = bytes; |
| 1100 | if (period_elapsed) |
| 1101 | snd_pcm_period_elapsed(subs->pcm_substream); |
| 1102 | } |
| 1103 | |
| 1104 | /* |
| 1105 | * process after playback data complete |
| 1106 | * - decrease the delay count again |
| 1107 | */ |
| 1108 | static void retire_playback_urb(struct snd_usb_substream *subs, |
| 1109 | struct urb *urb) |
| 1110 | { |
| 1111 | unsigned long flags; |
| 1112 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; |
| 1113 | int stride = runtime->frame_bits >> 3; |
| 1114 | int processed = urb->transfer_buffer_length / stride; |
| 1115 | |
| 1116 | spin_lock_irqsave(&subs->lock, flags); |
| 1117 | if (processed > runtime->delay) |
| 1118 | runtime->delay = 0; |
| 1119 | else |
| 1120 | runtime->delay -= processed; |
| 1121 | spin_unlock_irqrestore(&subs->lock, flags); |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 1122 | } |
| 1123 | |
| 1124 | static int snd_usb_playback_open(struct snd_pcm_substream *substream) |
| 1125 | { |
| 1126 | return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_PLAYBACK); |
| 1127 | } |
| 1128 | |
| 1129 | static int snd_usb_playback_close(struct snd_pcm_substream *substream) |
| 1130 | { |
| 1131 | return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_PLAYBACK); |
| 1132 | } |
| 1133 | |
| 1134 | static int snd_usb_capture_open(struct snd_pcm_substream *substream) |
| 1135 | { |
| 1136 | return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_CAPTURE); |
| 1137 | } |
| 1138 | |
| 1139 | static int snd_usb_capture_close(struct snd_pcm_substream *substream) |
| 1140 | { |
| 1141 | return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_CAPTURE); |
| 1142 | } |
| 1143 | |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 1144 | static int snd_usb_substream_playback_trigger(struct snd_pcm_substream *substream, |
| 1145 | int cmd) |
| 1146 | { |
| 1147 | struct snd_usb_substream *subs = substream->runtime->private_data; |
| 1148 | |
| 1149 | switch (cmd) { |
| 1150 | case SNDRV_PCM_TRIGGER_START: |
| 1151 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
| 1152 | subs->data_endpoint->prepare_data_urb = prepare_playback_urb; |
| 1153 | subs->data_endpoint->retire_data_urb = retire_playback_urb; |
Daniel Mack | 97f8d3b | 2012-05-21 12:47:36 +0200 | [diff] [blame] | 1154 | subs->running = 1; |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 1155 | return 0; |
| 1156 | case SNDRV_PCM_TRIGGER_STOP: |
| 1157 | stop_endpoints(subs, 0, 0, 0); |
Daniel Mack | 97f8d3b | 2012-05-21 12:47:36 +0200 | [diff] [blame] | 1158 | subs->running = 0; |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 1159 | return 0; |
| 1160 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
| 1161 | subs->data_endpoint->prepare_data_urb = NULL; |
| 1162 | subs->data_endpoint->retire_data_urb = NULL; |
Daniel Mack | 97f8d3b | 2012-05-21 12:47:36 +0200 | [diff] [blame] | 1163 | subs->running = 0; |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 1164 | return 0; |
| 1165 | } |
| 1166 | |
| 1167 | return -EINVAL; |
| 1168 | } |
| 1169 | |
Daniel Mack | afe2596 | 2012-06-16 16:58:04 +0200 | [diff] [blame] | 1170 | static int snd_usb_substream_capture_trigger(struct snd_pcm_substream *substream, |
| 1171 | int cmd) |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 1172 | { |
| 1173 | int err; |
| 1174 | struct snd_usb_substream *subs = substream->runtime->private_data; |
| 1175 | |
| 1176 | switch (cmd) { |
| 1177 | case SNDRV_PCM_TRIGGER_START: |
| 1178 | err = start_endpoints(subs); |
| 1179 | if (err < 0) |
| 1180 | return err; |
| 1181 | |
| 1182 | subs->data_endpoint->retire_data_urb = retire_capture_urb; |
Daniel Mack | 97f8d3b | 2012-05-21 12:47:36 +0200 | [diff] [blame] | 1183 | subs->running = 1; |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 1184 | return 0; |
| 1185 | case SNDRV_PCM_TRIGGER_STOP: |
| 1186 | stop_endpoints(subs, 0, 0, 0); |
Daniel Mack | 97f8d3b | 2012-05-21 12:47:36 +0200 | [diff] [blame] | 1187 | subs->running = 0; |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 1188 | return 0; |
| 1189 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
| 1190 | subs->data_endpoint->retire_data_urb = NULL; |
Daniel Mack | 97f8d3b | 2012-05-21 12:47:36 +0200 | [diff] [blame] | 1191 | subs->running = 0; |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 1192 | return 0; |
| 1193 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
| 1194 | subs->data_endpoint->retire_data_urb = retire_capture_urb; |
Daniel Mack | 97f8d3b | 2012-05-21 12:47:36 +0200 | [diff] [blame] | 1195 | subs->running = 1; |
Daniel Mack | edcd363 | 2012-04-12 13:51:12 +0200 | [diff] [blame] | 1196 | return 0; |
| 1197 | } |
| 1198 | |
| 1199 | return -EINVAL; |
| 1200 | } |
| 1201 | |
Daniel Mack | e577999 | 2010-03-04 19:46:13 +0100 | [diff] [blame] | 1202 | static struct snd_pcm_ops snd_usb_playback_ops = { |
| 1203 | .open = snd_usb_playback_open, |
| 1204 | .close = snd_usb_playback_close, |
| 1205 | .ioctl = snd_pcm_lib_ioctl, |
| 1206 | .hw_params = snd_usb_hw_params, |
| 1207 | .hw_free = snd_usb_hw_free, |
| 1208 | .prepare = snd_usb_pcm_prepare, |
| 1209 | .trigger = snd_usb_substream_playback_trigger, |
| 1210 | .pointer = snd_usb_pcm_pointer, |
| 1211 | .page = snd_pcm_lib_get_vmalloc_page, |
| 1212 | .mmap = snd_pcm_lib_mmap_vmalloc, |
| 1213 | }; |
| 1214 | |
| 1215 | static struct snd_pcm_ops snd_usb_capture_ops = { |
| 1216 | .open = snd_usb_capture_open, |
| 1217 | .close = snd_usb_capture_close, |
| 1218 | .ioctl = snd_pcm_lib_ioctl, |
| 1219 | .hw_params = snd_usb_hw_params, |
| 1220 | .hw_free = snd_usb_hw_free, |
| 1221 | .prepare = snd_usb_pcm_prepare, |
| 1222 | .trigger = snd_usb_substream_capture_trigger, |
| 1223 | .pointer = snd_usb_pcm_pointer, |
| 1224 | .page = snd_pcm_lib_get_vmalloc_page, |
| 1225 | .mmap = snd_pcm_lib_mmap_vmalloc, |
| 1226 | }; |
| 1227 | |
| 1228 | void snd_usb_set_pcm_ops(struct snd_pcm *pcm, int stream) |
| 1229 | { |
| 1230 | snd_pcm_set_ops(pcm, stream, |
| 1231 | stream == SNDRV_PCM_STREAM_PLAYBACK ? |
| 1232 | &snd_usb_playback_ops : &snd_usb_capture_ops); |
| 1233 | } |