Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1 | /* |
| 2 | * f_uac2.c -- USB Audio Class 2.0 Function |
| 3 | * |
| 4 | * Copyright (C) 2011 |
| 5 | * Yadwinder Singh (yadi.brar01@gmail.com) |
| 6 | * Jaswinder Singh (jaswinder.singh@linaro.org) |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | */ |
| 13 | |
| 14 | #include <linux/usb/audio.h> |
| 15 | #include <linux/usb/audio-v2.h> |
| 16 | #include <linux/platform_device.h> |
| 17 | #include <linux/module.h> |
| 18 | |
| 19 | #include <sound/core.h> |
| 20 | #include <sound/pcm.h> |
| 21 | #include <sound/pcm_params.h> |
| 22 | |
| 23 | /* Playback(USB-IN) Default Stereo - Fl/Fr */ |
| 24 | static int p_chmask = 0x3; |
| 25 | module_param(p_chmask, uint, S_IRUGO); |
| 26 | MODULE_PARM_DESC(p_chmask, "Playback Channel Mask"); |
| 27 | |
| 28 | /* Playback Default 48 KHz */ |
| 29 | static int p_srate = 48000; |
| 30 | module_param(p_srate, uint, S_IRUGO); |
| 31 | MODULE_PARM_DESC(p_srate, "Playback Sampling Rate"); |
| 32 | |
| 33 | /* Playback Default 16bits/sample */ |
| 34 | static int p_ssize = 2; |
| 35 | module_param(p_ssize, uint, S_IRUGO); |
| 36 | MODULE_PARM_DESC(p_ssize, "Playback Sample Size(bytes)"); |
| 37 | |
| 38 | /* Capture(USB-OUT) Default Stereo - Fl/Fr */ |
| 39 | static int c_chmask = 0x3; |
| 40 | module_param(c_chmask, uint, S_IRUGO); |
| 41 | MODULE_PARM_DESC(c_chmask, "Capture Channel Mask"); |
| 42 | |
| 43 | /* Capture Default 64 KHz */ |
| 44 | static int c_srate = 64000; |
| 45 | module_param(c_srate, uint, S_IRUGO); |
| 46 | MODULE_PARM_DESC(c_srate, "Capture Sampling Rate"); |
| 47 | |
| 48 | /* Capture Default 16bits/sample */ |
| 49 | static int c_ssize = 2; |
| 50 | module_param(c_ssize, uint, S_IRUGO); |
| 51 | MODULE_PARM_DESC(c_ssize, "Capture Sample Size(bytes)"); |
| 52 | |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 53 | /* Keep everyone on toes */ |
| 54 | #define USB_XFERS 2 |
| 55 | |
| 56 | /* |
| 57 | * The driver implements a simple UAC_2 topology. |
| 58 | * USB-OUT -> IT_1 -> OT_3 -> ALSA_Capture |
| 59 | * ALSA_Playback -> IT_2 -> OT_4 -> USB-IN |
| 60 | * Capture and Playback sampling rates are independently |
| 61 | * controlled by two clock sources : |
| 62 | * CLK_5 := c_srate, and CLK_6 := p_srate |
| 63 | */ |
| 64 | #define USB_OUT_IT_ID 1 |
| 65 | #define IO_IN_IT_ID 2 |
| 66 | #define IO_OUT_OT_ID 3 |
| 67 | #define USB_IN_OT_ID 4 |
| 68 | #define USB_OUT_CLK_ID 5 |
| 69 | #define USB_IN_CLK_ID 6 |
| 70 | |
| 71 | #define CONTROL_ABSENT 0 |
| 72 | #define CONTROL_RDONLY 1 |
| 73 | #define CONTROL_RDWR 3 |
| 74 | |
| 75 | #define CLK_FREQ_CTRL 0 |
| 76 | #define CLK_VLD_CTRL 2 |
| 77 | |
| 78 | #define COPY_CTRL 0 |
| 79 | #define CONN_CTRL 2 |
| 80 | #define OVRLD_CTRL 4 |
| 81 | #define CLSTR_CTRL 6 |
| 82 | #define UNFLW_CTRL 8 |
| 83 | #define OVFLW_CTRL 10 |
| 84 | |
| 85 | const char *uac2_name = "snd_uac2"; |
| 86 | |
| 87 | struct uac2_req { |
| 88 | struct uac2_rtd_params *pp; /* parent param */ |
| 89 | struct usb_request *req; |
| 90 | }; |
| 91 | |
| 92 | struct uac2_rtd_params { |
| 93 | bool ep_enabled; /* if the ep is enabled */ |
| 94 | /* Size of the ring buffer */ |
| 95 | size_t dma_bytes; |
| 96 | unsigned char *dma_area; |
| 97 | |
| 98 | struct snd_pcm_substream *ss; |
| 99 | |
| 100 | /* Ring buffer */ |
| 101 | ssize_t hw_ptr; |
| 102 | |
| 103 | void *rbuf; |
| 104 | |
| 105 | size_t period_size; |
| 106 | |
| 107 | unsigned max_psize; |
| 108 | struct uac2_req ureq[USB_XFERS]; |
| 109 | |
| 110 | spinlock_t lock; |
| 111 | }; |
| 112 | |
| 113 | struct snd_uac2_chip { |
| 114 | struct platform_device pdev; |
| 115 | struct platform_driver pdrv; |
| 116 | |
| 117 | struct uac2_rtd_params p_prm; |
| 118 | struct uac2_rtd_params c_prm; |
| 119 | |
| 120 | struct snd_card *card; |
| 121 | struct snd_pcm *pcm; |
| 122 | }; |
| 123 | |
| 124 | #define BUFF_SIZE_MAX (PAGE_SIZE * 16) |
| 125 | #define PRD_SIZE_MAX PAGE_SIZE |
| 126 | #define MIN_PERIODS 4 |
| 127 | |
| 128 | static struct snd_pcm_hardware uac2_pcm_hardware = { |
| 129 | .info = SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER |
| 130 | | SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
| 131 | | SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME, |
| 132 | .rates = SNDRV_PCM_RATE_CONTINUOUS, |
| 133 | .periods_max = BUFF_SIZE_MAX / PRD_SIZE_MAX, |
| 134 | .buffer_bytes_max = BUFF_SIZE_MAX, |
| 135 | .period_bytes_max = PRD_SIZE_MAX, |
| 136 | .periods_min = MIN_PERIODS, |
| 137 | }; |
| 138 | |
| 139 | struct audio_dev { |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 140 | u8 ac_intf, ac_alt; |
| 141 | u8 as_out_intf, as_out_alt; |
| 142 | u8 as_in_intf, as_in_alt; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 143 | |
| 144 | struct usb_ep *in_ep, *out_ep; |
| 145 | struct usb_function func; |
| 146 | |
| 147 | /* The ALSA Sound Card it represents on the USB-Client side */ |
| 148 | struct snd_uac2_chip uac2; |
| 149 | }; |
| 150 | |
| 151 | static struct audio_dev *agdev_g; |
| 152 | |
| 153 | static inline |
| 154 | struct audio_dev *func_to_agdev(struct usb_function *f) |
| 155 | { |
| 156 | return container_of(f, struct audio_dev, func); |
| 157 | } |
| 158 | |
| 159 | static inline |
| 160 | struct audio_dev *uac2_to_agdev(struct snd_uac2_chip *u) |
| 161 | { |
| 162 | return container_of(u, struct audio_dev, uac2); |
| 163 | } |
| 164 | |
| 165 | static inline |
| 166 | struct snd_uac2_chip *pdev_to_uac2(struct platform_device *p) |
| 167 | { |
| 168 | return container_of(p, struct snd_uac2_chip, pdev); |
| 169 | } |
| 170 | |
| 171 | static inline |
| 172 | struct snd_uac2_chip *prm_to_uac2(struct uac2_rtd_params *r) |
| 173 | { |
| 174 | struct snd_uac2_chip *uac2 = container_of(r, |
| 175 | struct snd_uac2_chip, c_prm); |
| 176 | |
| 177 | if (&uac2->c_prm != r) |
| 178 | uac2 = container_of(r, struct snd_uac2_chip, p_prm); |
| 179 | |
| 180 | return uac2; |
| 181 | } |
| 182 | |
| 183 | static inline |
| 184 | uint num_channels(uint chanmask) |
| 185 | { |
| 186 | uint num = 0; |
| 187 | |
| 188 | while (chanmask) { |
| 189 | num += (chanmask & 1); |
| 190 | chanmask >>= 1; |
| 191 | } |
| 192 | |
| 193 | return num; |
| 194 | } |
| 195 | |
| 196 | static void |
| 197 | agdev_iso_complete(struct usb_ep *ep, struct usb_request *req) |
| 198 | { |
| 199 | unsigned pending; |
| 200 | unsigned long flags; |
| 201 | bool update_alsa = false; |
| 202 | unsigned char *src, *dst; |
| 203 | int status = req->status; |
| 204 | struct uac2_req *ur = req->context; |
| 205 | struct snd_pcm_substream *substream; |
| 206 | struct uac2_rtd_params *prm = ur->pp; |
| 207 | struct snd_uac2_chip *uac2 = prm_to_uac2(prm); |
| 208 | |
| 209 | /* i/f shutting down */ |
| 210 | if (!prm->ep_enabled) |
| 211 | return; |
| 212 | |
| 213 | /* |
| 214 | * We can't really do much about bad xfers. |
| 215 | * Afterall, the ISOCH xfers could fail legitimately. |
| 216 | */ |
| 217 | if (status) |
| 218 | pr_debug("%s: iso_complete status(%d) %d/%d\n", |
| 219 | __func__, status, req->actual, req->length); |
| 220 | |
| 221 | substream = prm->ss; |
| 222 | |
| 223 | /* Do nothing if ALSA isn't active */ |
| 224 | if (!substream) |
| 225 | goto exit; |
| 226 | |
| 227 | spin_lock_irqsave(&prm->lock, flags); |
| 228 | |
| 229 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 230 | src = prm->dma_area + prm->hw_ptr; |
| 231 | req->actual = req->length; |
| 232 | dst = req->buf; |
| 233 | } else { |
| 234 | dst = prm->dma_area + prm->hw_ptr; |
| 235 | src = req->buf; |
| 236 | } |
| 237 | |
| 238 | pending = prm->hw_ptr % prm->period_size; |
| 239 | pending += req->actual; |
| 240 | if (pending >= prm->period_size) |
| 241 | update_alsa = true; |
| 242 | |
| 243 | prm->hw_ptr = (prm->hw_ptr + req->actual) % prm->dma_bytes; |
| 244 | |
| 245 | spin_unlock_irqrestore(&prm->lock, flags); |
| 246 | |
| 247 | /* Pack USB load in ALSA ring buffer */ |
| 248 | memcpy(dst, src, req->actual); |
| 249 | exit: |
| 250 | if (usb_ep_queue(ep, req, GFP_ATOMIC)) |
| 251 | dev_err(&uac2->pdev.dev, "%d Error!\n", __LINE__); |
| 252 | |
| 253 | if (update_alsa) |
| 254 | snd_pcm_period_elapsed(substream); |
| 255 | |
| 256 | return; |
| 257 | } |
| 258 | |
| 259 | static int |
| 260 | uac2_pcm_trigger(struct snd_pcm_substream *substream, int cmd) |
| 261 | { |
| 262 | struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream); |
| 263 | struct audio_dev *agdev = uac2_to_agdev(uac2); |
| 264 | struct uac2_rtd_params *prm; |
| 265 | unsigned long flags; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 266 | int err = 0; |
| 267 | |
Wei Yongjun | b642435 | 2012-12-02 05:33:08 -0500 | [diff] [blame^] | 268 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 269 | prm = &uac2->p_prm; |
Wei Yongjun | b642435 | 2012-12-02 05:33:08 -0500 | [diff] [blame^] | 270 | else |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 271 | prm = &uac2->c_prm; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 272 | |
| 273 | spin_lock_irqsave(&prm->lock, flags); |
| 274 | |
| 275 | /* Reset */ |
| 276 | prm->hw_ptr = 0; |
| 277 | |
| 278 | switch (cmd) { |
| 279 | case SNDRV_PCM_TRIGGER_START: |
| 280 | case SNDRV_PCM_TRIGGER_RESUME: |
| 281 | prm->ss = substream; |
| 282 | break; |
| 283 | case SNDRV_PCM_TRIGGER_STOP: |
| 284 | case SNDRV_PCM_TRIGGER_SUSPEND: |
| 285 | prm->ss = NULL; |
| 286 | break; |
| 287 | default: |
| 288 | err = -EINVAL; |
| 289 | } |
| 290 | |
| 291 | spin_unlock_irqrestore(&prm->lock, flags); |
| 292 | |
| 293 | /* Clear buffer after Play stops */ |
| 294 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && !prm->ss) |
| 295 | memset(prm->rbuf, 0, prm->max_psize * USB_XFERS); |
| 296 | |
| 297 | return err; |
| 298 | } |
| 299 | |
| 300 | static snd_pcm_uframes_t uac2_pcm_pointer(struct snd_pcm_substream *substream) |
| 301 | { |
| 302 | struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream); |
| 303 | struct uac2_rtd_params *prm; |
| 304 | |
| 305 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 306 | prm = &uac2->p_prm; |
| 307 | else |
| 308 | prm = &uac2->c_prm; |
| 309 | |
| 310 | return bytes_to_frames(substream->runtime, prm->hw_ptr); |
| 311 | } |
| 312 | |
| 313 | static int uac2_pcm_hw_params(struct snd_pcm_substream *substream, |
| 314 | struct snd_pcm_hw_params *hw_params) |
| 315 | { |
| 316 | struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream); |
| 317 | struct uac2_rtd_params *prm; |
| 318 | int err; |
| 319 | |
| 320 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 321 | prm = &uac2->p_prm; |
| 322 | else |
| 323 | prm = &uac2->c_prm; |
| 324 | |
| 325 | err = snd_pcm_lib_malloc_pages(substream, |
| 326 | params_buffer_bytes(hw_params)); |
| 327 | if (err >= 0) { |
| 328 | prm->dma_bytes = substream->runtime->dma_bytes; |
| 329 | prm->dma_area = substream->runtime->dma_area; |
| 330 | prm->period_size = params_period_bytes(hw_params); |
| 331 | } |
| 332 | |
| 333 | return err; |
| 334 | } |
| 335 | |
| 336 | static int uac2_pcm_hw_free(struct snd_pcm_substream *substream) |
| 337 | { |
| 338 | struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream); |
| 339 | struct uac2_rtd_params *prm; |
| 340 | |
| 341 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 342 | prm = &uac2->p_prm; |
| 343 | else |
| 344 | prm = &uac2->c_prm; |
| 345 | |
| 346 | prm->dma_area = NULL; |
| 347 | prm->dma_bytes = 0; |
| 348 | prm->period_size = 0; |
| 349 | |
| 350 | return snd_pcm_lib_free_pages(substream); |
| 351 | } |
| 352 | |
| 353 | static int uac2_pcm_open(struct snd_pcm_substream *substream) |
| 354 | { |
| 355 | struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream); |
| 356 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 357 | |
| 358 | runtime->hw = uac2_pcm_hardware; |
| 359 | |
| 360 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 361 | spin_lock_init(&uac2->p_prm.lock); |
| 362 | runtime->hw.rate_min = p_srate; |
| 363 | runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE; /* ! p_ssize ! */ |
| 364 | runtime->hw.channels_min = num_channels(p_chmask); |
| 365 | runtime->hw.period_bytes_min = 2 * uac2->p_prm.max_psize |
| 366 | / runtime->hw.periods_min; |
| 367 | } else { |
| 368 | spin_lock_init(&uac2->c_prm.lock); |
| 369 | runtime->hw.rate_min = c_srate; |
| 370 | runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE; /* ! c_ssize ! */ |
| 371 | runtime->hw.channels_min = num_channels(c_chmask); |
| 372 | runtime->hw.period_bytes_min = 2 * uac2->c_prm.max_psize |
| 373 | / runtime->hw.periods_min; |
| 374 | } |
| 375 | |
| 376 | runtime->hw.rate_max = runtime->hw.rate_min; |
| 377 | runtime->hw.channels_max = runtime->hw.channels_min; |
| 378 | |
| 379 | snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); |
| 380 | |
| 381 | return 0; |
| 382 | } |
| 383 | |
| 384 | /* ALSA cries without these function pointers */ |
| 385 | static int uac2_pcm_null(struct snd_pcm_substream *substream) |
| 386 | { |
| 387 | return 0; |
| 388 | } |
| 389 | |
| 390 | static struct snd_pcm_ops uac2_pcm_ops = { |
| 391 | .open = uac2_pcm_open, |
| 392 | .close = uac2_pcm_null, |
| 393 | .ioctl = snd_pcm_lib_ioctl, |
| 394 | .hw_params = uac2_pcm_hw_params, |
| 395 | .hw_free = uac2_pcm_hw_free, |
| 396 | .trigger = uac2_pcm_trigger, |
| 397 | .pointer = uac2_pcm_pointer, |
| 398 | .prepare = uac2_pcm_null, |
| 399 | }; |
| 400 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 401 | static int snd_uac2_probe(struct platform_device *pdev) |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 402 | { |
| 403 | struct snd_uac2_chip *uac2 = pdev_to_uac2(pdev); |
| 404 | struct snd_card *card; |
| 405 | struct snd_pcm *pcm; |
| 406 | int err; |
| 407 | |
| 408 | /* Choose any slot, with no id */ |
| 409 | err = snd_card_create(-1, NULL, THIS_MODULE, 0, &card); |
| 410 | if (err < 0) |
| 411 | return err; |
| 412 | |
| 413 | uac2->card = card; |
| 414 | |
| 415 | /* |
| 416 | * Create first PCM device |
| 417 | * Create a substream only for non-zero channel streams |
| 418 | */ |
| 419 | err = snd_pcm_new(uac2->card, "UAC2 PCM", 0, |
| 420 | p_chmask ? 1 : 0, c_chmask ? 1 : 0, &pcm); |
| 421 | if (err < 0) |
| 422 | goto snd_fail; |
| 423 | |
| 424 | strcpy(pcm->name, "UAC2 PCM"); |
| 425 | pcm->private_data = uac2; |
| 426 | |
| 427 | uac2->pcm = pcm; |
| 428 | |
| 429 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &uac2_pcm_ops); |
| 430 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &uac2_pcm_ops); |
| 431 | |
| 432 | strcpy(card->driver, "UAC2_Gadget"); |
| 433 | strcpy(card->shortname, "UAC2_Gadget"); |
| 434 | sprintf(card->longname, "UAC2_Gadget %i", pdev->id); |
| 435 | |
| 436 | snd_card_set_dev(card, &pdev->dev); |
| 437 | |
| 438 | snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, |
| 439 | snd_dma_continuous_data(GFP_KERNEL), 0, BUFF_SIZE_MAX); |
| 440 | |
| 441 | err = snd_card_register(card); |
| 442 | if (!err) { |
| 443 | platform_set_drvdata(pdev, card); |
| 444 | return 0; |
| 445 | } |
| 446 | |
| 447 | snd_fail: |
| 448 | snd_card_free(card); |
| 449 | |
| 450 | uac2->pcm = NULL; |
| 451 | uac2->card = NULL; |
| 452 | |
| 453 | return err; |
| 454 | } |
| 455 | |
Sebastian Andrzej Siewior | 1e1a27c | 2012-09-06 20:11:02 +0200 | [diff] [blame] | 456 | static int snd_uac2_remove(struct platform_device *pdev) |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 457 | { |
| 458 | struct snd_card *card = platform_get_drvdata(pdev); |
| 459 | |
| 460 | platform_set_drvdata(pdev, NULL); |
| 461 | |
| 462 | if (card) |
| 463 | return snd_card_free(card); |
| 464 | |
| 465 | return 0; |
| 466 | } |
| 467 | |
| 468 | static int alsa_uac2_init(struct audio_dev *agdev) |
| 469 | { |
| 470 | struct snd_uac2_chip *uac2 = &agdev->uac2; |
| 471 | int err; |
| 472 | |
| 473 | uac2->pdrv.probe = snd_uac2_probe; |
| 474 | uac2->pdrv.remove = snd_uac2_remove; |
| 475 | uac2->pdrv.driver.name = uac2_name; |
| 476 | |
| 477 | uac2->pdev.id = 0; |
| 478 | uac2->pdev.name = uac2_name; |
| 479 | |
| 480 | /* Register snd_uac2 driver */ |
| 481 | err = platform_driver_register(&uac2->pdrv); |
| 482 | if (err) |
| 483 | return err; |
| 484 | |
| 485 | /* Register snd_uac2 device */ |
| 486 | err = platform_device_register(&uac2->pdev); |
| 487 | if (err) |
| 488 | platform_driver_unregister(&uac2->pdrv); |
| 489 | |
| 490 | return err; |
| 491 | } |
| 492 | |
| 493 | static void alsa_uac2_exit(struct audio_dev *agdev) |
| 494 | { |
| 495 | struct snd_uac2_chip *uac2 = &agdev->uac2; |
| 496 | |
| 497 | platform_driver_unregister(&uac2->pdrv); |
| 498 | platform_device_unregister(&uac2->pdev); |
| 499 | } |
| 500 | |
| 501 | |
| 502 | /* --------- USB Function Interface ------------- */ |
| 503 | |
| 504 | enum { |
| 505 | STR_ASSOC, |
| 506 | STR_IF_CTRL, |
| 507 | STR_CLKSRC_IN, |
| 508 | STR_CLKSRC_OUT, |
| 509 | STR_USB_IT, |
| 510 | STR_IO_IT, |
| 511 | STR_USB_OT, |
| 512 | STR_IO_OT, |
| 513 | STR_AS_OUT_ALT0, |
| 514 | STR_AS_OUT_ALT1, |
| 515 | STR_AS_IN_ALT0, |
| 516 | STR_AS_IN_ALT1, |
| 517 | }; |
| 518 | |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 519 | static char clksrc_in[8]; |
| 520 | static char clksrc_out[8]; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 521 | |
| 522 | static struct usb_string strings_fn[] = { |
Sebastian Andrzej Siewior | b36c347 | 2012-10-22 22:15:09 +0200 | [diff] [blame] | 523 | [STR_ASSOC].s = "Source/Sink", |
| 524 | [STR_IF_CTRL].s = "Topology Control", |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 525 | [STR_CLKSRC_IN].s = clksrc_in, |
| 526 | [STR_CLKSRC_OUT].s = clksrc_out, |
Sebastian Andrzej Siewior | b36c347 | 2012-10-22 22:15:09 +0200 | [diff] [blame] | 527 | [STR_USB_IT].s = "USBH Out", |
| 528 | [STR_IO_IT].s = "USBD Out", |
| 529 | [STR_USB_OT].s = "USBH In", |
| 530 | [STR_IO_OT].s = "USBD In", |
| 531 | [STR_AS_OUT_ALT0].s = "Playback Inactive", |
| 532 | [STR_AS_OUT_ALT1].s = "Playback Active", |
| 533 | [STR_AS_IN_ALT0].s = "Capture Inactive", |
| 534 | [STR_AS_IN_ALT1].s = "Capture Active", |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 535 | { }, |
| 536 | }; |
| 537 | |
| 538 | static struct usb_gadget_strings str_fn = { |
| 539 | .language = 0x0409, /* en-us */ |
| 540 | .strings = strings_fn, |
| 541 | }; |
| 542 | |
| 543 | static struct usb_gadget_strings *fn_strings[] = { |
| 544 | &str_fn, |
| 545 | NULL, |
| 546 | }; |
| 547 | |
| 548 | static struct usb_qualifier_descriptor devqual_desc = { |
| 549 | .bLength = sizeof devqual_desc, |
| 550 | .bDescriptorType = USB_DT_DEVICE_QUALIFIER, |
| 551 | |
| 552 | .bcdUSB = cpu_to_le16(0x200), |
| 553 | .bDeviceClass = USB_CLASS_MISC, |
| 554 | .bDeviceSubClass = 0x02, |
| 555 | .bDeviceProtocol = 0x01, |
| 556 | .bNumConfigurations = 1, |
| 557 | .bRESERVED = 0, |
| 558 | }; |
| 559 | |
| 560 | static struct usb_interface_assoc_descriptor iad_desc = { |
| 561 | .bLength = sizeof iad_desc, |
| 562 | .bDescriptorType = USB_DT_INTERFACE_ASSOCIATION, |
| 563 | |
| 564 | .bFirstInterface = 0, |
| 565 | .bInterfaceCount = 3, |
| 566 | .bFunctionClass = USB_CLASS_AUDIO, |
| 567 | .bFunctionSubClass = UAC2_FUNCTION_SUBCLASS_UNDEFINED, |
| 568 | .bFunctionProtocol = UAC_VERSION_2, |
| 569 | }; |
| 570 | |
| 571 | /* Audio Control Interface */ |
| 572 | static struct usb_interface_descriptor std_ac_if_desc = { |
| 573 | .bLength = sizeof std_ac_if_desc, |
| 574 | .bDescriptorType = USB_DT_INTERFACE, |
| 575 | |
| 576 | .bAlternateSetting = 0, |
| 577 | .bNumEndpoints = 0, |
| 578 | .bInterfaceClass = USB_CLASS_AUDIO, |
| 579 | .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL, |
| 580 | .bInterfaceProtocol = UAC_VERSION_2, |
| 581 | }; |
| 582 | |
| 583 | /* Clock source for IN traffic */ |
| 584 | struct uac_clock_source_descriptor in_clk_src_desc = { |
| 585 | .bLength = sizeof in_clk_src_desc, |
| 586 | .bDescriptorType = USB_DT_CS_INTERFACE, |
| 587 | |
| 588 | .bDescriptorSubtype = UAC2_CLOCK_SOURCE, |
| 589 | .bClockID = USB_IN_CLK_ID, |
| 590 | .bmAttributes = UAC_CLOCK_SOURCE_TYPE_INT_FIXED, |
| 591 | .bmControls = (CONTROL_RDONLY << CLK_FREQ_CTRL), |
| 592 | .bAssocTerminal = 0, |
| 593 | }; |
| 594 | |
| 595 | /* Clock source for OUT traffic */ |
| 596 | struct uac_clock_source_descriptor out_clk_src_desc = { |
| 597 | .bLength = sizeof out_clk_src_desc, |
| 598 | .bDescriptorType = USB_DT_CS_INTERFACE, |
| 599 | |
| 600 | .bDescriptorSubtype = UAC2_CLOCK_SOURCE, |
| 601 | .bClockID = USB_OUT_CLK_ID, |
| 602 | .bmAttributes = UAC_CLOCK_SOURCE_TYPE_INT_FIXED, |
| 603 | .bmControls = (CONTROL_RDONLY << CLK_FREQ_CTRL), |
| 604 | .bAssocTerminal = 0, |
| 605 | }; |
| 606 | |
| 607 | /* Input Terminal for USB_OUT */ |
| 608 | struct uac2_input_terminal_descriptor usb_out_it_desc = { |
| 609 | .bLength = sizeof usb_out_it_desc, |
| 610 | .bDescriptorType = USB_DT_CS_INTERFACE, |
| 611 | |
| 612 | .bDescriptorSubtype = UAC_INPUT_TERMINAL, |
| 613 | .bTerminalID = USB_OUT_IT_ID, |
| 614 | .wTerminalType = cpu_to_le16(UAC_TERMINAL_STREAMING), |
| 615 | .bAssocTerminal = 0, |
| 616 | .bCSourceID = USB_OUT_CLK_ID, |
| 617 | .iChannelNames = 0, |
| 618 | .bmControls = (CONTROL_RDWR << COPY_CTRL), |
| 619 | }; |
| 620 | |
| 621 | /* Input Terminal for I/O-In */ |
| 622 | struct uac2_input_terminal_descriptor io_in_it_desc = { |
| 623 | .bLength = sizeof io_in_it_desc, |
| 624 | .bDescriptorType = USB_DT_CS_INTERFACE, |
| 625 | |
| 626 | .bDescriptorSubtype = UAC_INPUT_TERMINAL, |
| 627 | .bTerminalID = IO_IN_IT_ID, |
| 628 | .wTerminalType = cpu_to_le16(UAC_INPUT_TERMINAL_UNDEFINED), |
| 629 | .bAssocTerminal = 0, |
| 630 | .bCSourceID = USB_IN_CLK_ID, |
| 631 | .iChannelNames = 0, |
| 632 | .bmControls = (CONTROL_RDWR << COPY_CTRL), |
| 633 | }; |
| 634 | |
| 635 | /* Ouput Terminal for USB_IN */ |
| 636 | struct uac2_output_terminal_descriptor usb_in_ot_desc = { |
| 637 | .bLength = sizeof usb_in_ot_desc, |
| 638 | .bDescriptorType = USB_DT_CS_INTERFACE, |
| 639 | |
| 640 | .bDescriptorSubtype = UAC_OUTPUT_TERMINAL, |
| 641 | .bTerminalID = USB_IN_OT_ID, |
| 642 | .wTerminalType = cpu_to_le16(UAC_TERMINAL_STREAMING), |
| 643 | .bAssocTerminal = 0, |
| 644 | .bSourceID = IO_IN_IT_ID, |
| 645 | .bCSourceID = USB_IN_CLK_ID, |
| 646 | .bmControls = (CONTROL_RDWR << COPY_CTRL), |
| 647 | }; |
| 648 | |
| 649 | /* Ouput Terminal for I/O-Out */ |
| 650 | struct uac2_output_terminal_descriptor io_out_ot_desc = { |
| 651 | .bLength = sizeof io_out_ot_desc, |
| 652 | .bDescriptorType = USB_DT_CS_INTERFACE, |
| 653 | |
| 654 | .bDescriptorSubtype = UAC_OUTPUT_TERMINAL, |
| 655 | .bTerminalID = IO_OUT_OT_ID, |
| 656 | .wTerminalType = cpu_to_le16(UAC_OUTPUT_TERMINAL_UNDEFINED), |
| 657 | .bAssocTerminal = 0, |
| 658 | .bSourceID = USB_OUT_IT_ID, |
| 659 | .bCSourceID = USB_OUT_CLK_ID, |
| 660 | .bmControls = (CONTROL_RDWR << COPY_CTRL), |
| 661 | }; |
| 662 | |
| 663 | struct uac2_ac_header_descriptor ac_hdr_desc = { |
| 664 | .bLength = sizeof ac_hdr_desc, |
| 665 | .bDescriptorType = USB_DT_CS_INTERFACE, |
| 666 | |
| 667 | .bDescriptorSubtype = UAC_MS_HEADER, |
| 668 | .bcdADC = cpu_to_le16(0x200), |
| 669 | .bCategory = UAC2_FUNCTION_IO_BOX, |
| 670 | .wTotalLength = sizeof in_clk_src_desc + sizeof out_clk_src_desc |
| 671 | + sizeof usb_out_it_desc + sizeof io_in_it_desc |
| 672 | + sizeof usb_in_ot_desc + sizeof io_out_ot_desc, |
| 673 | .bmControls = 0, |
| 674 | }; |
| 675 | |
| 676 | /* Audio Streaming OUT Interface - Alt0 */ |
| 677 | static struct usb_interface_descriptor std_as_out_if0_desc = { |
| 678 | .bLength = sizeof std_as_out_if0_desc, |
| 679 | .bDescriptorType = USB_DT_INTERFACE, |
| 680 | |
| 681 | .bAlternateSetting = 0, |
| 682 | .bNumEndpoints = 0, |
| 683 | .bInterfaceClass = USB_CLASS_AUDIO, |
| 684 | .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, |
| 685 | .bInterfaceProtocol = UAC_VERSION_2, |
| 686 | }; |
| 687 | |
| 688 | /* Audio Streaming OUT Interface - Alt1 */ |
| 689 | static struct usb_interface_descriptor std_as_out_if1_desc = { |
| 690 | .bLength = sizeof std_as_out_if1_desc, |
| 691 | .bDescriptorType = USB_DT_INTERFACE, |
| 692 | |
| 693 | .bAlternateSetting = 1, |
| 694 | .bNumEndpoints = 1, |
| 695 | .bInterfaceClass = USB_CLASS_AUDIO, |
| 696 | .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, |
| 697 | .bInterfaceProtocol = UAC_VERSION_2, |
| 698 | }; |
| 699 | |
| 700 | /* Audio Stream OUT Intface Desc */ |
| 701 | struct uac2_as_header_descriptor as_out_hdr_desc = { |
| 702 | .bLength = sizeof as_out_hdr_desc, |
| 703 | .bDescriptorType = USB_DT_CS_INTERFACE, |
| 704 | |
| 705 | .bDescriptorSubtype = UAC_AS_GENERAL, |
| 706 | .bTerminalLink = USB_OUT_IT_ID, |
| 707 | .bmControls = 0, |
| 708 | .bFormatType = UAC_FORMAT_TYPE_I, |
| 709 | .bmFormats = cpu_to_le32(UAC_FORMAT_TYPE_I_PCM), |
| 710 | .iChannelNames = 0, |
| 711 | }; |
| 712 | |
| 713 | /* Audio USB_OUT Format */ |
| 714 | struct uac2_format_type_i_descriptor as_out_fmt1_desc = { |
| 715 | .bLength = sizeof as_out_fmt1_desc, |
| 716 | .bDescriptorType = USB_DT_CS_INTERFACE, |
| 717 | .bDescriptorSubtype = UAC_FORMAT_TYPE, |
| 718 | .bFormatType = UAC_FORMAT_TYPE_I, |
| 719 | }; |
| 720 | |
| 721 | /* STD AS ISO OUT Endpoint */ |
| 722 | struct usb_endpoint_descriptor fs_epout_desc = { |
| 723 | .bLength = USB_DT_ENDPOINT_SIZE, |
| 724 | .bDescriptorType = USB_DT_ENDPOINT, |
| 725 | |
| 726 | .bEndpointAddress = USB_DIR_OUT, |
| 727 | .bmAttributes = USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ASYNC, |
| 728 | .bInterval = 1, |
| 729 | }; |
| 730 | |
| 731 | struct usb_endpoint_descriptor hs_epout_desc = { |
| 732 | .bLength = USB_DT_ENDPOINT_SIZE, |
| 733 | .bDescriptorType = USB_DT_ENDPOINT, |
| 734 | |
| 735 | .bmAttributes = USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ASYNC, |
| 736 | .bInterval = 4, |
| 737 | }; |
| 738 | |
| 739 | /* CS AS ISO OUT Endpoint */ |
| 740 | static struct uac2_iso_endpoint_descriptor as_iso_out_desc = { |
| 741 | .bLength = sizeof as_iso_out_desc, |
| 742 | .bDescriptorType = USB_DT_CS_ENDPOINT, |
| 743 | |
| 744 | .bDescriptorSubtype = UAC_EP_GENERAL, |
| 745 | .bmAttributes = 0, |
| 746 | .bmControls = 0, |
| 747 | .bLockDelayUnits = 0, |
| 748 | .wLockDelay = 0, |
| 749 | }; |
| 750 | |
| 751 | /* Audio Streaming IN Interface - Alt0 */ |
| 752 | static struct usb_interface_descriptor std_as_in_if0_desc = { |
| 753 | .bLength = sizeof std_as_in_if0_desc, |
| 754 | .bDescriptorType = USB_DT_INTERFACE, |
| 755 | |
| 756 | .bAlternateSetting = 0, |
| 757 | .bNumEndpoints = 0, |
| 758 | .bInterfaceClass = USB_CLASS_AUDIO, |
| 759 | .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, |
| 760 | .bInterfaceProtocol = UAC_VERSION_2, |
| 761 | }; |
| 762 | |
| 763 | /* Audio Streaming IN Interface - Alt1 */ |
| 764 | static struct usb_interface_descriptor std_as_in_if1_desc = { |
| 765 | .bLength = sizeof std_as_in_if1_desc, |
| 766 | .bDescriptorType = USB_DT_INTERFACE, |
| 767 | |
| 768 | .bAlternateSetting = 1, |
| 769 | .bNumEndpoints = 1, |
| 770 | .bInterfaceClass = USB_CLASS_AUDIO, |
| 771 | .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, |
| 772 | .bInterfaceProtocol = UAC_VERSION_2, |
| 773 | }; |
| 774 | |
| 775 | /* Audio Stream IN Intface Desc */ |
| 776 | struct uac2_as_header_descriptor as_in_hdr_desc = { |
| 777 | .bLength = sizeof as_in_hdr_desc, |
| 778 | .bDescriptorType = USB_DT_CS_INTERFACE, |
| 779 | |
| 780 | .bDescriptorSubtype = UAC_AS_GENERAL, |
| 781 | .bTerminalLink = USB_IN_OT_ID, |
| 782 | .bmControls = 0, |
| 783 | .bFormatType = UAC_FORMAT_TYPE_I, |
| 784 | .bmFormats = cpu_to_le32(UAC_FORMAT_TYPE_I_PCM), |
| 785 | .iChannelNames = 0, |
| 786 | }; |
| 787 | |
| 788 | /* Audio USB_IN Format */ |
| 789 | struct uac2_format_type_i_descriptor as_in_fmt1_desc = { |
| 790 | .bLength = sizeof as_in_fmt1_desc, |
| 791 | .bDescriptorType = USB_DT_CS_INTERFACE, |
| 792 | .bDescriptorSubtype = UAC_FORMAT_TYPE, |
| 793 | .bFormatType = UAC_FORMAT_TYPE_I, |
| 794 | }; |
| 795 | |
| 796 | /* STD AS ISO IN Endpoint */ |
| 797 | struct usb_endpoint_descriptor fs_epin_desc = { |
| 798 | .bLength = USB_DT_ENDPOINT_SIZE, |
| 799 | .bDescriptorType = USB_DT_ENDPOINT, |
| 800 | |
| 801 | .bEndpointAddress = USB_DIR_IN, |
| 802 | .bmAttributes = USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ASYNC, |
| 803 | .bInterval = 1, |
| 804 | }; |
| 805 | |
| 806 | struct usb_endpoint_descriptor hs_epin_desc = { |
| 807 | .bLength = USB_DT_ENDPOINT_SIZE, |
| 808 | .bDescriptorType = USB_DT_ENDPOINT, |
| 809 | |
| 810 | .bmAttributes = USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ASYNC, |
| 811 | .bInterval = 4, |
| 812 | }; |
| 813 | |
| 814 | /* CS AS ISO IN Endpoint */ |
| 815 | static struct uac2_iso_endpoint_descriptor as_iso_in_desc = { |
| 816 | .bLength = sizeof as_iso_in_desc, |
| 817 | .bDescriptorType = USB_DT_CS_ENDPOINT, |
| 818 | |
| 819 | .bDescriptorSubtype = UAC_EP_GENERAL, |
| 820 | .bmAttributes = 0, |
| 821 | .bmControls = 0, |
| 822 | .bLockDelayUnits = 0, |
| 823 | .wLockDelay = 0, |
| 824 | }; |
| 825 | |
| 826 | static struct usb_descriptor_header *fs_audio_desc[] = { |
| 827 | (struct usb_descriptor_header *)&iad_desc, |
| 828 | (struct usb_descriptor_header *)&std_ac_if_desc, |
| 829 | |
| 830 | (struct usb_descriptor_header *)&ac_hdr_desc, |
| 831 | (struct usb_descriptor_header *)&in_clk_src_desc, |
| 832 | (struct usb_descriptor_header *)&out_clk_src_desc, |
| 833 | (struct usb_descriptor_header *)&usb_out_it_desc, |
| 834 | (struct usb_descriptor_header *)&io_in_it_desc, |
| 835 | (struct usb_descriptor_header *)&usb_in_ot_desc, |
| 836 | (struct usb_descriptor_header *)&io_out_ot_desc, |
| 837 | |
| 838 | (struct usb_descriptor_header *)&std_as_out_if0_desc, |
| 839 | (struct usb_descriptor_header *)&std_as_out_if1_desc, |
| 840 | |
| 841 | (struct usb_descriptor_header *)&as_out_hdr_desc, |
| 842 | (struct usb_descriptor_header *)&as_out_fmt1_desc, |
| 843 | (struct usb_descriptor_header *)&fs_epout_desc, |
| 844 | (struct usb_descriptor_header *)&as_iso_out_desc, |
| 845 | |
| 846 | (struct usb_descriptor_header *)&std_as_in_if0_desc, |
| 847 | (struct usb_descriptor_header *)&std_as_in_if1_desc, |
| 848 | |
| 849 | (struct usb_descriptor_header *)&as_in_hdr_desc, |
| 850 | (struct usb_descriptor_header *)&as_in_fmt1_desc, |
| 851 | (struct usb_descriptor_header *)&fs_epin_desc, |
| 852 | (struct usb_descriptor_header *)&as_iso_in_desc, |
| 853 | NULL, |
| 854 | }; |
| 855 | |
| 856 | static struct usb_descriptor_header *hs_audio_desc[] = { |
| 857 | (struct usb_descriptor_header *)&iad_desc, |
| 858 | (struct usb_descriptor_header *)&std_ac_if_desc, |
| 859 | |
| 860 | (struct usb_descriptor_header *)&ac_hdr_desc, |
| 861 | (struct usb_descriptor_header *)&in_clk_src_desc, |
| 862 | (struct usb_descriptor_header *)&out_clk_src_desc, |
| 863 | (struct usb_descriptor_header *)&usb_out_it_desc, |
| 864 | (struct usb_descriptor_header *)&io_in_it_desc, |
| 865 | (struct usb_descriptor_header *)&usb_in_ot_desc, |
| 866 | (struct usb_descriptor_header *)&io_out_ot_desc, |
| 867 | |
| 868 | (struct usb_descriptor_header *)&std_as_out_if0_desc, |
| 869 | (struct usb_descriptor_header *)&std_as_out_if1_desc, |
| 870 | |
| 871 | (struct usb_descriptor_header *)&as_out_hdr_desc, |
| 872 | (struct usb_descriptor_header *)&as_out_fmt1_desc, |
| 873 | (struct usb_descriptor_header *)&hs_epout_desc, |
| 874 | (struct usb_descriptor_header *)&as_iso_out_desc, |
| 875 | |
| 876 | (struct usb_descriptor_header *)&std_as_in_if0_desc, |
| 877 | (struct usb_descriptor_header *)&std_as_in_if1_desc, |
| 878 | |
| 879 | (struct usb_descriptor_header *)&as_in_hdr_desc, |
| 880 | (struct usb_descriptor_header *)&as_in_fmt1_desc, |
| 881 | (struct usb_descriptor_header *)&hs_epin_desc, |
| 882 | (struct usb_descriptor_header *)&as_iso_in_desc, |
| 883 | NULL, |
| 884 | }; |
| 885 | |
| 886 | struct cntrl_cur_lay3 { |
| 887 | __u32 dCUR; |
| 888 | }; |
| 889 | |
| 890 | struct cntrl_range_lay3 { |
| 891 | __u16 wNumSubRanges; |
| 892 | __u32 dMIN; |
| 893 | __u32 dMAX; |
| 894 | __u32 dRES; |
| 895 | } __packed; |
| 896 | |
| 897 | static inline void |
| 898 | free_ep(struct uac2_rtd_params *prm, struct usb_ep *ep) |
| 899 | { |
| 900 | struct snd_uac2_chip *uac2 = prm_to_uac2(prm); |
| 901 | int i; |
| 902 | |
| 903 | prm->ep_enabled = false; |
| 904 | |
| 905 | for (i = 0; i < USB_XFERS; i++) { |
| 906 | if (prm->ureq[i].req) { |
| 907 | usb_ep_dequeue(ep, prm->ureq[i].req); |
| 908 | usb_ep_free_request(ep, prm->ureq[i].req); |
| 909 | prm->ureq[i].req = NULL; |
| 910 | } |
| 911 | } |
| 912 | |
| 913 | if (usb_ep_disable(ep)) |
| 914 | dev_err(&uac2->pdev.dev, |
| 915 | "%s:%d Error!\n", __func__, __LINE__); |
| 916 | } |
| 917 | |
| 918 | static int __init |
| 919 | afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) |
| 920 | { |
| 921 | struct audio_dev *agdev = func_to_agdev(fn); |
| 922 | struct snd_uac2_chip *uac2 = &agdev->uac2; |
| 923 | struct usb_composite_dev *cdev = cfg->cdev; |
| 924 | struct usb_gadget *gadget = cdev->gadget; |
| 925 | struct uac2_rtd_params *prm; |
| 926 | int ret; |
| 927 | |
| 928 | ret = usb_interface_id(cfg, fn); |
| 929 | if (ret < 0) { |
| 930 | dev_err(&uac2->pdev.dev, |
| 931 | "%s:%d Error!\n", __func__, __LINE__); |
| 932 | return ret; |
| 933 | } |
| 934 | std_ac_if_desc.bInterfaceNumber = ret; |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 935 | agdev->ac_intf = ret; |
| 936 | agdev->ac_alt = 0; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 937 | |
| 938 | ret = usb_interface_id(cfg, fn); |
| 939 | if (ret < 0) { |
| 940 | dev_err(&uac2->pdev.dev, |
| 941 | "%s:%d Error!\n", __func__, __LINE__); |
| 942 | return ret; |
| 943 | } |
| 944 | std_as_out_if0_desc.bInterfaceNumber = ret; |
| 945 | std_as_out_if1_desc.bInterfaceNumber = ret; |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 946 | agdev->as_out_intf = ret; |
| 947 | agdev->as_out_alt = 0; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 948 | |
| 949 | ret = usb_interface_id(cfg, fn); |
| 950 | if (ret < 0) { |
| 951 | dev_err(&uac2->pdev.dev, |
| 952 | "%s:%d Error!\n", __func__, __LINE__); |
| 953 | return ret; |
| 954 | } |
| 955 | std_as_in_if0_desc.bInterfaceNumber = ret; |
| 956 | std_as_in_if1_desc.bInterfaceNumber = ret; |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 957 | agdev->as_in_intf = ret; |
| 958 | agdev->as_in_alt = 0; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 959 | |
| 960 | agdev->out_ep = usb_ep_autoconfig(gadget, &fs_epout_desc); |
Sebastian Andrzej Siewior | 391aa85 | 2012-10-22 22:14:59 +0200 | [diff] [blame] | 961 | if (!agdev->out_ep) { |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 962 | dev_err(&uac2->pdev.dev, |
| 963 | "%s:%d Error!\n", __func__, __LINE__); |
Sebastian Andrzej Siewior | 391aa85 | 2012-10-22 22:14:59 +0200 | [diff] [blame] | 964 | goto err; |
| 965 | } |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 966 | agdev->out_ep->driver_data = agdev; |
| 967 | |
| 968 | agdev->in_ep = usb_ep_autoconfig(gadget, &fs_epin_desc); |
Sebastian Andrzej Siewior | 391aa85 | 2012-10-22 22:14:59 +0200 | [diff] [blame] | 969 | if (!agdev->in_ep) { |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 970 | dev_err(&uac2->pdev.dev, |
| 971 | "%s:%d Error!\n", __func__, __LINE__); |
Sebastian Andrzej Siewior | 391aa85 | 2012-10-22 22:14:59 +0200 | [diff] [blame] | 972 | goto err; |
| 973 | } |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 974 | agdev->in_ep->driver_data = agdev; |
| 975 | |
| 976 | hs_epout_desc.bEndpointAddress = fs_epout_desc.bEndpointAddress; |
| 977 | hs_epout_desc.wMaxPacketSize = fs_epout_desc.wMaxPacketSize; |
| 978 | hs_epin_desc.bEndpointAddress = fs_epin_desc.bEndpointAddress; |
| 979 | hs_epin_desc.wMaxPacketSize = fs_epin_desc.wMaxPacketSize; |
| 980 | |
Sebastian Andrzej Siewior | 10287ba | 2012-10-22 22:15:06 +0200 | [diff] [blame] | 981 | ret = usb_assign_descriptors(fn, fs_audio_desc, hs_audio_desc, NULL); |
| 982 | if (ret) |
| 983 | goto err; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 984 | |
| 985 | prm = &agdev->uac2.c_prm; |
| 986 | prm->max_psize = hs_epout_desc.wMaxPacketSize; |
| 987 | prm->rbuf = kzalloc(prm->max_psize * USB_XFERS, GFP_KERNEL); |
| 988 | if (!prm->rbuf) { |
| 989 | prm->max_psize = 0; |
| 990 | dev_err(&uac2->pdev.dev, |
| 991 | "%s:%d Error!\n", __func__, __LINE__); |
Sebastian Andrzej Siewior | 391aa85 | 2012-10-22 22:14:59 +0200 | [diff] [blame] | 992 | goto err; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 993 | } |
| 994 | |
| 995 | prm = &agdev->uac2.p_prm; |
| 996 | prm->max_psize = hs_epin_desc.wMaxPacketSize; |
| 997 | prm->rbuf = kzalloc(prm->max_psize * USB_XFERS, GFP_KERNEL); |
| 998 | if (!prm->rbuf) { |
| 999 | prm->max_psize = 0; |
| 1000 | dev_err(&uac2->pdev.dev, |
| 1001 | "%s:%d Error!\n", __func__, __LINE__); |
Sebastian Andrzej Siewior | 391aa85 | 2012-10-22 22:14:59 +0200 | [diff] [blame] | 1002 | goto err; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1003 | } |
| 1004 | |
Sebastian Andrzej Siewior | 391aa85 | 2012-10-22 22:14:59 +0200 | [diff] [blame] | 1005 | ret = alsa_uac2_init(agdev); |
| 1006 | if (ret) |
| 1007 | goto err; |
| 1008 | return 0; |
| 1009 | err: |
| 1010 | kfree(agdev->uac2.p_prm.rbuf); |
| 1011 | kfree(agdev->uac2.c_prm.rbuf); |
Sebastian Andrzej Siewior | 10287ba | 2012-10-22 22:15:06 +0200 | [diff] [blame] | 1012 | usb_free_all_descriptors(fn); |
Sebastian Andrzej Siewior | 391aa85 | 2012-10-22 22:14:59 +0200 | [diff] [blame] | 1013 | if (agdev->in_ep) |
| 1014 | agdev->in_ep->driver_data = NULL; |
| 1015 | if (agdev->out_ep) |
| 1016 | agdev->out_ep->driver_data = NULL; |
| 1017 | return -EINVAL; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1018 | } |
| 1019 | |
| 1020 | static void |
| 1021 | afunc_unbind(struct usb_configuration *cfg, struct usb_function *fn) |
| 1022 | { |
| 1023 | struct audio_dev *agdev = func_to_agdev(fn); |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1024 | struct uac2_rtd_params *prm; |
| 1025 | |
| 1026 | alsa_uac2_exit(agdev); |
| 1027 | |
| 1028 | prm = &agdev->uac2.p_prm; |
| 1029 | kfree(prm->rbuf); |
| 1030 | |
| 1031 | prm = &agdev->uac2.c_prm; |
| 1032 | kfree(prm->rbuf); |
Sebastian Andrzej Siewior | 10287ba | 2012-10-22 22:15:06 +0200 | [diff] [blame] | 1033 | usb_free_all_descriptors(fn); |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1034 | |
| 1035 | if (agdev->in_ep) |
| 1036 | agdev->in_ep->driver_data = NULL; |
| 1037 | if (agdev->out_ep) |
| 1038 | agdev->out_ep->driver_data = NULL; |
| 1039 | } |
| 1040 | |
| 1041 | static int |
| 1042 | afunc_set_alt(struct usb_function *fn, unsigned intf, unsigned alt) |
| 1043 | { |
| 1044 | struct usb_composite_dev *cdev = fn->config->cdev; |
| 1045 | struct audio_dev *agdev = func_to_agdev(fn); |
| 1046 | struct snd_uac2_chip *uac2 = &agdev->uac2; |
| 1047 | struct usb_gadget *gadget = cdev->gadget; |
| 1048 | struct usb_request *req; |
| 1049 | struct usb_ep *ep; |
| 1050 | struct uac2_rtd_params *prm; |
| 1051 | int i; |
| 1052 | |
| 1053 | /* No i/f has more than 2 alt settings */ |
| 1054 | if (alt > 1) { |
| 1055 | dev_err(&uac2->pdev.dev, |
| 1056 | "%s:%d Error!\n", __func__, __LINE__); |
| 1057 | return -EINVAL; |
| 1058 | } |
| 1059 | |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 1060 | if (intf == agdev->ac_intf) { |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1061 | /* Control I/f has only 1 AltSetting - 0 */ |
| 1062 | if (alt) { |
| 1063 | dev_err(&uac2->pdev.dev, |
| 1064 | "%s:%d Error!\n", __func__, __LINE__); |
| 1065 | return -EINVAL; |
| 1066 | } |
| 1067 | return 0; |
| 1068 | } |
| 1069 | |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 1070 | if (intf == agdev->as_out_intf) { |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1071 | ep = agdev->out_ep; |
| 1072 | prm = &uac2->c_prm; |
| 1073 | config_ep_by_speed(gadget, fn, ep); |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 1074 | agdev->as_out_alt = alt; |
| 1075 | } else if (intf == agdev->as_in_intf) { |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1076 | ep = agdev->in_ep; |
| 1077 | prm = &uac2->p_prm; |
| 1078 | config_ep_by_speed(gadget, fn, ep); |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 1079 | agdev->as_in_alt = alt; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1080 | } else { |
| 1081 | dev_err(&uac2->pdev.dev, |
| 1082 | "%s:%d Error!\n", __func__, __LINE__); |
| 1083 | return -EINVAL; |
| 1084 | } |
| 1085 | |
| 1086 | if (alt == 0) { |
| 1087 | free_ep(prm, ep); |
| 1088 | return 0; |
| 1089 | } |
| 1090 | |
| 1091 | prm->ep_enabled = true; |
| 1092 | usb_ep_enable(ep); |
| 1093 | |
| 1094 | for (i = 0; i < USB_XFERS; i++) { |
| 1095 | if (prm->ureq[i].req) { |
| 1096 | if (usb_ep_queue(ep, prm->ureq[i].req, GFP_ATOMIC)) |
| 1097 | dev_err(&uac2->pdev.dev, "%d Error!\n", |
| 1098 | __LINE__); |
| 1099 | continue; |
| 1100 | } |
| 1101 | |
| 1102 | req = usb_ep_alloc_request(ep, GFP_ATOMIC); |
| 1103 | if (req == NULL) { |
| 1104 | dev_err(&uac2->pdev.dev, |
| 1105 | "%s:%d Error!\n", __func__, __LINE__); |
| 1106 | return -EINVAL; |
| 1107 | } |
| 1108 | |
| 1109 | prm->ureq[i].req = req; |
| 1110 | prm->ureq[i].pp = prm; |
| 1111 | |
| 1112 | req->zero = 0; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1113 | req->context = &prm->ureq[i]; |
| 1114 | req->length = prm->max_psize; |
| 1115 | req->complete = agdev_iso_complete; |
| 1116 | req->buf = prm->rbuf + i * req->length; |
| 1117 | |
| 1118 | if (usb_ep_queue(ep, req, GFP_ATOMIC)) |
| 1119 | dev_err(&uac2->pdev.dev, "%d Error!\n", __LINE__); |
| 1120 | } |
| 1121 | |
| 1122 | return 0; |
| 1123 | } |
| 1124 | |
| 1125 | static int |
| 1126 | afunc_get_alt(struct usb_function *fn, unsigned intf) |
| 1127 | { |
| 1128 | struct audio_dev *agdev = func_to_agdev(fn); |
| 1129 | struct snd_uac2_chip *uac2 = &agdev->uac2; |
| 1130 | |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 1131 | if (intf == agdev->ac_intf) |
| 1132 | return agdev->ac_alt; |
| 1133 | else if (intf == agdev->as_out_intf) |
| 1134 | return agdev->as_out_alt; |
| 1135 | else if (intf == agdev->as_in_intf) |
| 1136 | return agdev->as_in_alt; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1137 | else |
| 1138 | dev_err(&uac2->pdev.dev, |
| 1139 | "%s:%d Invalid Interface %d!\n", |
| 1140 | __func__, __LINE__, intf); |
| 1141 | |
| 1142 | return -EINVAL; |
| 1143 | } |
| 1144 | |
| 1145 | static void |
| 1146 | afunc_disable(struct usb_function *fn) |
| 1147 | { |
| 1148 | struct audio_dev *agdev = func_to_agdev(fn); |
| 1149 | struct snd_uac2_chip *uac2 = &agdev->uac2; |
| 1150 | |
| 1151 | free_ep(&uac2->p_prm, agdev->in_ep); |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 1152 | agdev->as_in_alt = 0; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1153 | |
| 1154 | free_ep(&uac2->c_prm, agdev->out_ep); |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 1155 | agdev->as_out_alt = 0; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1156 | } |
| 1157 | |
| 1158 | static int |
| 1159 | in_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr) |
| 1160 | { |
| 1161 | struct usb_request *req = fn->config->cdev->req; |
| 1162 | struct audio_dev *agdev = func_to_agdev(fn); |
| 1163 | struct snd_uac2_chip *uac2 = &agdev->uac2; |
| 1164 | u16 w_length = le16_to_cpu(cr->wLength); |
| 1165 | u16 w_index = le16_to_cpu(cr->wIndex); |
| 1166 | u16 w_value = le16_to_cpu(cr->wValue); |
| 1167 | u8 entity_id = (w_index >> 8) & 0xff; |
| 1168 | u8 control_selector = w_value >> 8; |
| 1169 | int value = -EOPNOTSUPP; |
| 1170 | |
| 1171 | if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) { |
| 1172 | struct cntrl_cur_lay3 c; |
| 1173 | |
| 1174 | if (entity_id == USB_IN_CLK_ID) |
| 1175 | c.dCUR = p_srate; |
| 1176 | else if (entity_id == USB_OUT_CLK_ID) |
| 1177 | c.dCUR = c_srate; |
| 1178 | |
| 1179 | value = min_t(unsigned, w_length, sizeof c); |
| 1180 | memcpy(req->buf, &c, value); |
| 1181 | } else if (control_selector == UAC2_CS_CONTROL_CLOCK_VALID) { |
| 1182 | *(u8 *)req->buf = 1; |
| 1183 | value = min_t(unsigned, w_length, 1); |
| 1184 | } else { |
| 1185 | dev_err(&uac2->pdev.dev, |
| 1186 | "%s:%d control_selector=%d TODO!\n", |
| 1187 | __func__, __LINE__, control_selector); |
| 1188 | } |
| 1189 | |
| 1190 | return value; |
| 1191 | } |
| 1192 | |
| 1193 | static int |
| 1194 | in_rq_range(struct usb_function *fn, const struct usb_ctrlrequest *cr) |
| 1195 | { |
| 1196 | struct usb_request *req = fn->config->cdev->req; |
| 1197 | struct audio_dev *agdev = func_to_agdev(fn); |
| 1198 | struct snd_uac2_chip *uac2 = &agdev->uac2; |
| 1199 | u16 w_length = le16_to_cpu(cr->wLength); |
| 1200 | u16 w_index = le16_to_cpu(cr->wIndex); |
| 1201 | u16 w_value = le16_to_cpu(cr->wValue); |
| 1202 | u8 entity_id = (w_index >> 8) & 0xff; |
| 1203 | u8 control_selector = w_value >> 8; |
| 1204 | struct cntrl_range_lay3 r; |
| 1205 | int value = -EOPNOTSUPP; |
| 1206 | |
| 1207 | if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) { |
| 1208 | if (entity_id == USB_IN_CLK_ID) |
| 1209 | r.dMIN = p_srate; |
| 1210 | else if (entity_id == USB_OUT_CLK_ID) |
| 1211 | r.dMIN = c_srate; |
| 1212 | else |
| 1213 | return -EOPNOTSUPP; |
| 1214 | |
| 1215 | r.dMAX = r.dMIN; |
| 1216 | r.dRES = 0; |
| 1217 | r.wNumSubRanges = 1; |
| 1218 | |
| 1219 | value = min_t(unsigned, w_length, sizeof r); |
| 1220 | memcpy(req->buf, &r, value); |
| 1221 | } else { |
| 1222 | dev_err(&uac2->pdev.dev, |
| 1223 | "%s:%d control_selector=%d TODO!\n", |
| 1224 | __func__, __LINE__, control_selector); |
| 1225 | } |
| 1226 | |
| 1227 | return value; |
| 1228 | } |
| 1229 | |
| 1230 | static int |
| 1231 | ac_rq_in(struct usb_function *fn, const struct usb_ctrlrequest *cr) |
| 1232 | { |
| 1233 | if (cr->bRequest == UAC2_CS_CUR) |
| 1234 | return in_rq_cur(fn, cr); |
| 1235 | else if (cr->bRequest == UAC2_CS_RANGE) |
| 1236 | return in_rq_range(fn, cr); |
| 1237 | else |
| 1238 | return -EOPNOTSUPP; |
| 1239 | } |
| 1240 | |
| 1241 | static int |
| 1242 | out_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr) |
| 1243 | { |
| 1244 | u16 w_length = le16_to_cpu(cr->wLength); |
| 1245 | u16 w_value = le16_to_cpu(cr->wValue); |
| 1246 | u8 control_selector = w_value >> 8; |
| 1247 | |
| 1248 | if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) |
| 1249 | return w_length; |
| 1250 | |
| 1251 | return -EOPNOTSUPP; |
| 1252 | } |
| 1253 | |
| 1254 | static int |
| 1255 | setup_rq_inf(struct usb_function *fn, const struct usb_ctrlrequest *cr) |
| 1256 | { |
| 1257 | struct audio_dev *agdev = func_to_agdev(fn); |
| 1258 | struct snd_uac2_chip *uac2 = &agdev->uac2; |
| 1259 | u16 w_index = le16_to_cpu(cr->wIndex); |
| 1260 | u8 intf = w_index & 0xff; |
| 1261 | |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 1262 | if (intf != agdev->ac_intf) { |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1263 | dev_err(&uac2->pdev.dev, |
| 1264 | "%s:%d Error!\n", __func__, __LINE__); |
| 1265 | return -EOPNOTSUPP; |
| 1266 | } |
| 1267 | |
| 1268 | if (cr->bRequestType & USB_DIR_IN) |
| 1269 | return ac_rq_in(fn, cr); |
| 1270 | else if (cr->bRequest == UAC2_CS_CUR) |
| 1271 | return out_rq_cur(fn, cr); |
| 1272 | |
| 1273 | return -EOPNOTSUPP; |
| 1274 | } |
| 1275 | |
| 1276 | static int |
| 1277 | afunc_setup(struct usb_function *fn, const struct usb_ctrlrequest *cr) |
| 1278 | { |
| 1279 | struct usb_composite_dev *cdev = fn->config->cdev; |
| 1280 | struct audio_dev *agdev = func_to_agdev(fn); |
| 1281 | struct snd_uac2_chip *uac2 = &agdev->uac2; |
| 1282 | struct usb_request *req = cdev->req; |
| 1283 | u16 w_length = le16_to_cpu(cr->wLength); |
| 1284 | int value = -EOPNOTSUPP; |
| 1285 | |
| 1286 | /* Only Class specific requests are supposed to reach here */ |
| 1287 | if ((cr->bRequestType & USB_TYPE_MASK) != USB_TYPE_CLASS) |
| 1288 | return -EOPNOTSUPP; |
| 1289 | |
| 1290 | if ((cr->bRequestType & USB_RECIP_MASK) == USB_RECIP_INTERFACE) |
| 1291 | value = setup_rq_inf(fn, cr); |
| 1292 | else |
| 1293 | dev_err(&uac2->pdev.dev, "%s:%d Error!\n", __func__, __LINE__); |
| 1294 | |
| 1295 | if (value >= 0) { |
| 1296 | req->length = value; |
| 1297 | req->zero = value < w_length; |
| 1298 | value = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC); |
| 1299 | if (value < 0) { |
| 1300 | dev_err(&uac2->pdev.dev, |
| 1301 | "%s:%d Error!\n", __func__, __LINE__); |
| 1302 | req->status = 0; |
| 1303 | } |
| 1304 | } |
| 1305 | |
| 1306 | return value; |
| 1307 | } |
| 1308 | |
| 1309 | static int audio_bind_config(struct usb_configuration *cfg) |
| 1310 | { |
Sebastian Andrzej Siewior | 1616e99 | 2012-10-22 22:15:10 +0200 | [diff] [blame] | 1311 | int res; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1312 | |
| 1313 | agdev_g = kzalloc(sizeof *agdev_g, GFP_KERNEL); |
| 1314 | if (agdev_g == NULL) { |
| 1315 | printk(KERN_ERR "Unable to allocate audio gadget\n"); |
| 1316 | return -ENOMEM; |
| 1317 | } |
| 1318 | |
Sebastian Andrzej Siewior | 1616e99 | 2012-10-22 22:15:10 +0200 | [diff] [blame] | 1319 | res = usb_string_ids_tab(cfg->cdev, strings_fn); |
| 1320 | if (res) |
| 1321 | return res; |
| 1322 | iad_desc.iFunction = strings_fn[STR_ASSOC].id; |
| 1323 | std_ac_if_desc.iInterface = strings_fn[STR_IF_CTRL].id; |
| 1324 | in_clk_src_desc.iClockSource = strings_fn[STR_CLKSRC_IN].id; |
| 1325 | out_clk_src_desc.iClockSource = strings_fn[STR_CLKSRC_OUT].id; |
| 1326 | usb_out_it_desc.iTerminal = strings_fn[STR_USB_IT].id; |
| 1327 | io_in_it_desc.iTerminal = strings_fn[STR_IO_IT].id; |
| 1328 | usb_in_ot_desc.iTerminal = strings_fn[STR_USB_OT].id; |
| 1329 | io_out_ot_desc.iTerminal = strings_fn[STR_IO_OT].id; |
| 1330 | std_as_out_if0_desc.iInterface = strings_fn[STR_AS_OUT_ALT0].id; |
| 1331 | std_as_out_if1_desc.iInterface = strings_fn[STR_AS_OUT_ALT1].id; |
| 1332 | std_as_in_if0_desc.iInterface = strings_fn[STR_AS_IN_ALT0].id; |
| 1333 | std_as_in_if1_desc.iInterface = strings_fn[STR_AS_IN_ALT1].id; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1334 | |
| 1335 | agdev_g->func.name = "uac2_func"; |
| 1336 | agdev_g->func.strings = fn_strings; |
| 1337 | agdev_g->func.bind = afunc_bind; |
| 1338 | agdev_g->func.unbind = afunc_unbind; |
| 1339 | agdev_g->func.set_alt = afunc_set_alt; |
| 1340 | agdev_g->func.get_alt = afunc_get_alt; |
| 1341 | agdev_g->func.disable = afunc_disable; |
| 1342 | agdev_g->func.setup = afunc_setup; |
| 1343 | |
| 1344 | /* Initialize the configurable parameters */ |
| 1345 | usb_out_it_desc.bNrChannels = num_channels(c_chmask); |
| 1346 | usb_out_it_desc.bmChannelConfig = cpu_to_le32(c_chmask); |
| 1347 | io_in_it_desc.bNrChannels = num_channels(p_chmask); |
| 1348 | io_in_it_desc.bmChannelConfig = cpu_to_le32(p_chmask); |
| 1349 | as_out_hdr_desc.bNrChannels = num_channels(c_chmask); |
| 1350 | as_out_hdr_desc.bmChannelConfig = cpu_to_le32(c_chmask); |
| 1351 | as_in_hdr_desc.bNrChannels = num_channels(p_chmask); |
| 1352 | as_in_hdr_desc.bmChannelConfig = cpu_to_le32(p_chmask); |
| 1353 | as_out_fmt1_desc.bSubslotSize = c_ssize; |
| 1354 | as_out_fmt1_desc.bBitResolution = c_ssize * 8; |
| 1355 | as_in_fmt1_desc.bSubslotSize = p_ssize; |
| 1356 | as_in_fmt1_desc.bBitResolution = p_ssize * 8; |
| 1357 | |
| 1358 | snprintf(clksrc_in, sizeof(clksrc_in), "%uHz", p_srate); |
| 1359 | snprintf(clksrc_out, sizeof(clksrc_out), "%uHz", c_srate); |
| 1360 | |
| 1361 | res = usb_add_function(cfg, &agdev_g->func); |
| 1362 | if (res < 0) |
| 1363 | kfree(agdev_g); |
| 1364 | |
| 1365 | return res; |
| 1366 | } |
| 1367 | |
| 1368 | static void |
| 1369 | uac2_unbind_config(struct usb_configuration *cfg) |
| 1370 | { |
| 1371 | kfree(agdev_g); |
| 1372 | agdev_g = NULL; |
| 1373 | } |