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 | |
Andrzej Pietrasiewicz | f8f93d2 | 2014-07-22 19:58:30 +0200 | [diff] [blame^] | 23 | #include "u_uac2.h" |
| 24 | |
| 25 | #ifdef USB_FUAC2_INCLUDED |
| 26 | |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 27 | /* Playback(USB-IN) Default Stereo - Fl/Fr */ |
| 28 | static int p_chmask = 0x3; |
| 29 | module_param(p_chmask, uint, S_IRUGO); |
| 30 | MODULE_PARM_DESC(p_chmask, "Playback Channel Mask"); |
| 31 | |
| 32 | /* Playback Default 48 KHz */ |
| 33 | static int p_srate = 48000; |
| 34 | module_param(p_srate, uint, S_IRUGO); |
| 35 | MODULE_PARM_DESC(p_srate, "Playback Sampling Rate"); |
| 36 | |
| 37 | /* Playback Default 16bits/sample */ |
| 38 | static int p_ssize = 2; |
| 39 | module_param(p_ssize, uint, S_IRUGO); |
| 40 | MODULE_PARM_DESC(p_ssize, "Playback Sample Size(bytes)"); |
| 41 | |
| 42 | /* Capture(USB-OUT) Default Stereo - Fl/Fr */ |
| 43 | static int c_chmask = 0x3; |
| 44 | module_param(c_chmask, uint, S_IRUGO); |
| 45 | MODULE_PARM_DESC(c_chmask, "Capture Channel Mask"); |
| 46 | |
| 47 | /* Capture Default 64 KHz */ |
| 48 | static int c_srate = 64000; |
| 49 | module_param(c_srate, uint, S_IRUGO); |
| 50 | MODULE_PARM_DESC(c_srate, "Capture Sampling Rate"); |
| 51 | |
| 52 | /* Capture Default 16bits/sample */ |
| 53 | static int c_ssize = 2; |
| 54 | module_param(c_ssize, uint, S_IRUGO); |
| 55 | MODULE_PARM_DESC(c_ssize, "Capture Sample Size(bytes)"); |
| 56 | |
Andrzej Pietrasiewicz | f8f93d2 | 2014-07-22 19:58:30 +0200 | [diff] [blame^] | 57 | #endif |
| 58 | |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 59 | /* Keep everyone on toes */ |
| 60 | #define USB_XFERS 2 |
| 61 | |
| 62 | /* |
| 63 | * The driver implements a simple UAC_2 topology. |
| 64 | * USB-OUT -> IT_1 -> OT_3 -> ALSA_Capture |
| 65 | * ALSA_Playback -> IT_2 -> OT_4 -> USB-IN |
| 66 | * Capture and Playback sampling rates are independently |
| 67 | * controlled by two clock sources : |
| 68 | * CLK_5 := c_srate, and CLK_6 := p_srate |
| 69 | */ |
| 70 | #define USB_OUT_IT_ID 1 |
| 71 | #define IO_IN_IT_ID 2 |
| 72 | #define IO_OUT_OT_ID 3 |
| 73 | #define USB_IN_OT_ID 4 |
| 74 | #define USB_OUT_CLK_ID 5 |
| 75 | #define USB_IN_CLK_ID 6 |
| 76 | |
| 77 | #define CONTROL_ABSENT 0 |
| 78 | #define CONTROL_RDONLY 1 |
| 79 | #define CONTROL_RDWR 3 |
| 80 | |
| 81 | #define CLK_FREQ_CTRL 0 |
| 82 | #define CLK_VLD_CTRL 2 |
| 83 | |
| 84 | #define COPY_CTRL 0 |
| 85 | #define CONN_CTRL 2 |
| 86 | #define OVRLD_CTRL 4 |
| 87 | #define CLSTR_CTRL 6 |
| 88 | #define UNFLW_CTRL 8 |
| 89 | #define OVFLW_CTRL 10 |
| 90 | |
| 91 | const char *uac2_name = "snd_uac2"; |
| 92 | |
| 93 | struct uac2_req { |
| 94 | struct uac2_rtd_params *pp; /* parent param */ |
| 95 | struct usb_request *req; |
| 96 | }; |
| 97 | |
| 98 | struct uac2_rtd_params { |
Jassi Brar | eb127cb | 2013-05-30 18:23:33 +0530 | [diff] [blame] | 99 | struct snd_uac2_chip *uac2; /* parent chip */ |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 100 | bool ep_enabled; /* if the ep is enabled */ |
| 101 | /* Size of the ring buffer */ |
| 102 | size_t dma_bytes; |
| 103 | unsigned char *dma_area; |
| 104 | |
| 105 | struct snd_pcm_substream *ss; |
| 106 | |
| 107 | /* Ring buffer */ |
| 108 | ssize_t hw_ptr; |
| 109 | |
| 110 | void *rbuf; |
| 111 | |
| 112 | size_t period_size; |
| 113 | |
| 114 | unsigned max_psize; |
| 115 | struct uac2_req ureq[USB_XFERS]; |
| 116 | |
| 117 | spinlock_t lock; |
| 118 | }; |
| 119 | |
| 120 | struct snd_uac2_chip { |
| 121 | struct platform_device pdev; |
| 122 | struct platform_driver pdrv; |
| 123 | |
| 124 | struct uac2_rtd_params p_prm; |
| 125 | struct uac2_rtd_params c_prm; |
| 126 | |
| 127 | struct snd_card *card; |
| 128 | struct snd_pcm *pcm; |
| 129 | }; |
| 130 | |
| 131 | #define BUFF_SIZE_MAX (PAGE_SIZE * 16) |
| 132 | #define PRD_SIZE_MAX PAGE_SIZE |
| 133 | #define MIN_PERIODS 4 |
| 134 | |
| 135 | static struct snd_pcm_hardware uac2_pcm_hardware = { |
| 136 | .info = SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER |
| 137 | | SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
| 138 | | SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME, |
| 139 | .rates = SNDRV_PCM_RATE_CONTINUOUS, |
| 140 | .periods_max = BUFF_SIZE_MAX / PRD_SIZE_MAX, |
| 141 | .buffer_bytes_max = BUFF_SIZE_MAX, |
| 142 | .period_bytes_max = PRD_SIZE_MAX, |
| 143 | .periods_min = MIN_PERIODS, |
| 144 | }; |
| 145 | |
| 146 | struct audio_dev { |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 147 | u8 ac_intf, ac_alt; |
| 148 | u8 as_out_intf, as_out_alt; |
| 149 | u8 as_in_intf, as_in_alt; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 150 | |
| 151 | struct usb_ep *in_ep, *out_ep; |
| 152 | struct usb_function func; |
| 153 | |
| 154 | /* The ALSA Sound Card it represents on the USB-Client side */ |
| 155 | struct snd_uac2_chip uac2; |
| 156 | }; |
| 157 | |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 158 | static inline |
| 159 | struct audio_dev *func_to_agdev(struct usb_function *f) |
| 160 | { |
| 161 | return container_of(f, struct audio_dev, func); |
| 162 | } |
| 163 | |
| 164 | static inline |
| 165 | struct audio_dev *uac2_to_agdev(struct snd_uac2_chip *u) |
| 166 | { |
| 167 | return container_of(u, struct audio_dev, uac2); |
| 168 | } |
| 169 | |
| 170 | static inline |
| 171 | struct snd_uac2_chip *pdev_to_uac2(struct platform_device *p) |
| 172 | { |
| 173 | return container_of(p, struct snd_uac2_chip, pdev); |
| 174 | } |
| 175 | |
| 176 | static inline |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 177 | uint num_channels(uint chanmask) |
| 178 | { |
| 179 | uint num = 0; |
| 180 | |
| 181 | while (chanmask) { |
| 182 | num += (chanmask & 1); |
| 183 | chanmask >>= 1; |
| 184 | } |
| 185 | |
| 186 | return num; |
| 187 | } |
| 188 | |
| 189 | static void |
| 190 | agdev_iso_complete(struct usb_ep *ep, struct usb_request *req) |
| 191 | { |
| 192 | unsigned pending; |
| 193 | unsigned long flags; |
| 194 | bool update_alsa = false; |
| 195 | unsigned char *src, *dst; |
| 196 | int status = req->status; |
| 197 | struct uac2_req *ur = req->context; |
| 198 | struct snd_pcm_substream *substream; |
| 199 | struct uac2_rtd_params *prm = ur->pp; |
Jassi Brar | eb127cb | 2013-05-30 18:23:33 +0530 | [diff] [blame] | 200 | struct snd_uac2_chip *uac2 = prm->uac2; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 201 | |
| 202 | /* i/f shutting down */ |
Andrzej Pietrasiewicz | 1ade5d7 | 2014-05-15 13:43:50 +0200 | [diff] [blame] | 203 | if (!prm->ep_enabled || req->status == -ESHUTDOWN) |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 204 | return; |
| 205 | |
| 206 | /* |
| 207 | * We can't really do much about bad xfers. |
| 208 | * Afterall, the ISOCH xfers could fail legitimately. |
| 209 | */ |
| 210 | if (status) |
| 211 | pr_debug("%s: iso_complete status(%d) %d/%d\n", |
| 212 | __func__, status, req->actual, req->length); |
| 213 | |
| 214 | substream = prm->ss; |
| 215 | |
| 216 | /* Do nothing if ALSA isn't active */ |
| 217 | if (!substream) |
| 218 | goto exit; |
| 219 | |
| 220 | spin_lock_irqsave(&prm->lock, flags); |
| 221 | |
| 222 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 223 | src = prm->dma_area + prm->hw_ptr; |
| 224 | req->actual = req->length; |
| 225 | dst = req->buf; |
| 226 | } else { |
| 227 | dst = prm->dma_area + prm->hw_ptr; |
| 228 | src = req->buf; |
| 229 | } |
| 230 | |
| 231 | pending = prm->hw_ptr % prm->period_size; |
| 232 | pending += req->actual; |
| 233 | if (pending >= prm->period_size) |
| 234 | update_alsa = true; |
| 235 | |
| 236 | prm->hw_ptr = (prm->hw_ptr + req->actual) % prm->dma_bytes; |
| 237 | |
| 238 | spin_unlock_irqrestore(&prm->lock, flags); |
| 239 | |
| 240 | /* Pack USB load in ALSA ring buffer */ |
| 241 | memcpy(dst, src, req->actual); |
| 242 | exit: |
| 243 | if (usb_ep_queue(ep, req, GFP_ATOMIC)) |
| 244 | dev_err(&uac2->pdev.dev, "%d Error!\n", __LINE__); |
| 245 | |
| 246 | if (update_alsa) |
| 247 | snd_pcm_period_elapsed(substream); |
| 248 | |
| 249 | return; |
| 250 | } |
| 251 | |
| 252 | static int |
| 253 | uac2_pcm_trigger(struct snd_pcm_substream *substream, int cmd) |
| 254 | { |
| 255 | struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream); |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 256 | struct uac2_rtd_params *prm; |
| 257 | unsigned long flags; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 258 | int err = 0; |
| 259 | |
Wei Yongjun | b642435 | 2012-12-02 05:33:08 -0500 | [diff] [blame] | 260 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 261 | prm = &uac2->p_prm; |
Wei Yongjun | b642435 | 2012-12-02 05:33:08 -0500 | [diff] [blame] | 262 | else |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 263 | prm = &uac2->c_prm; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 264 | |
| 265 | spin_lock_irqsave(&prm->lock, flags); |
| 266 | |
| 267 | /* Reset */ |
| 268 | prm->hw_ptr = 0; |
| 269 | |
| 270 | switch (cmd) { |
| 271 | case SNDRV_PCM_TRIGGER_START: |
| 272 | case SNDRV_PCM_TRIGGER_RESUME: |
| 273 | prm->ss = substream; |
| 274 | break; |
| 275 | case SNDRV_PCM_TRIGGER_STOP: |
| 276 | case SNDRV_PCM_TRIGGER_SUSPEND: |
| 277 | prm->ss = NULL; |
| 278 | break; |
| 279 | default: |
| 280 | err = -EINVAL; |
| 281 | } |
| 282 | |
| 283 | spin_unlock_irqrestore(&prm->lock, flags); |
| 284 | |
| 285 | /* Clear buffer after Play stops */ |
| 286 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && !prm->ss) |
| 287 | memset(prm->rbuf, 0, prm->max_psize * USB_XFERS); |
| 288 | |
| 289 | return err; |
| 290 | } |
| 291 | |
| 292 | static snd_pcm_uframes_t uac2_pcm_pointer(struct snd_pcm_substream *substream) |
| 293 | { |
| 294 | struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream); |
| 295 | struct uac2_rtd_params *prm; |
| 296 | |
| 297 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 298 | prm = &uac2->p_prm; |
| 299 | else |
| 300 | prm = &uac2->c_prm; |
| 301 | |
| 302 | return bytes_to_frames(substream->runtime, prm->hw_ptr); |
| 303 | } |
| 304 | |
| 305 | static int uac2_pcm_hw_params(struct snd_pcm_substream *substream, |
| 306 | struct snd_pcm_hw_params *hw_params) |
| 307 | { |
| 308 | struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream); |
| 309 | struct uac2_rtd_params *prm; |
| 310 | int err; |
| 311 | |
| 312 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 313 | prm = &uac2->p_prm; |
| 314 | else |
| 315 | prm = &uac2->c_prm; |
| 316 | |
| 317 | err = snd_pcm_lib_malloc_pages(substream, |
| 318 | params_buffer_bytes(hw_params)); |
| 319 | if (err >= 0) { |
| 320 | prm->dma_bytes = substream->runtime->dma_bytes; |
| 321 | prm->dma_area = substream->runtime->dma_area; |
| 322 | prm->period_size = params_period_bytes(hw_params); |
| 323 | } |
| 324 | |
| 325 | return err; |
| 326 | } |
| 327 | |
| 328 | static int uac2_pcm_hw_free(struct snd_pcm_substream *substream) |
| 329 | { |
| 330 | struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream); |
| 331 | struct uac2_rtd_params *prm; |
| 332 | |
| 333 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 334 | prm = &uac2->p_prm; |
| 335 | else |
| 336 | prm = &uac2->c_prm; |
| 337 | |
| 338 | prm->dma_area = NULL; |
| 339 | prm->dma_bytes = 0; |
| 340 | prm->period_size = 0; |
| 341 | |
| 342 | return snd_pcm_lib_free_pages(substream); |
| 343 | } |
| 344 | |
| 345 | static int uac2_pcm_open(struct snd_pcm_substream *substream) |
| 346 | { |
| 347 | struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream); |
| 348 | struct snd_pcm_runtime *runtime = substream->runtime; |
Andrzej Pietrasiewicz | f8f93d2 | 2014-07-22 19:58:30 +0200 | [diff] [blame^] | 349 | #ifndef USB_FUAC2_INCLUDED |
| 350 | struct audio_dev *audio_dev; |
| 351 | struct f_uac2_opts *opts; |
| 352 | int p_ssize, c_ssize; |
| 353 | int p_srate, c_srate; |
| 354 | int p_chmask, c_chmask; |
| 355 | |
| 356 | audio_dev = uac2_to_agdev(uac2); |
| 357 | opts = container_of(audio_dev->func.fi, struct f_uac2_opts, func_inst); |
| 358 | p_ssize = opts->p_ssize; |
| 359 | c_ssize = opts->c_ssize; |
| 360 | p_srate = opts->p_srate; |
| 361 | c_srate = opts->c_srate; |
| 362 | p_chmask = opts->p_chmask; |
| 363 | c_chmask = opts->c_chmask; |
| 364 | #endif |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 365 | |
| 366 | runtime->hw = uac2_pcm_hardware; |
| 367 | |
| 368 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 369 | spin_lock_init(&uac2->p_prm.lock); |
| 370 | runtime->hw.rate_min = p_srate; |
Sebastian Reimers | 55f7840 | 2014-07-03 20:15:28 +0200 | [diff] [blame] | 371 | switch (p_ssize) { |
| 372 | case 3: |
| 373 | runtime->hw.formats = SNDRV_PCM_FMTBIT_S24_3LE; |
| 374 | break; |
| 375 | case 4: |
| 376 | runtime->hw.formats = SNDRV_PCM_FMTBIT_S32_LE; |
| 377 | break; |
| 378 | default: |
| 379 | runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE; |
| 380 | break; |
| 381 | } |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 382 | runtime->hw.channels_min = num_channels(p_chmask); |
| 383 | runtime->hw.period_bytes_min = 2 * uac2->p_prm.max_psize |
| 384 | / runtime->hw.periods_min; |
| 385 | } else { |
| 386 | spin_lock_init(&uac2->c_prm.lock); |
| 387 | runtime->hw.rate_min = c_srate; |
Sebastian Reimers | 55f7840 | 2014-07-03 20:15:28 +0200 | [diff] [blame] | 388 | switch (c_ssize) { |
| 389 | case 3: |
| 390 | runtime->hw.formats = SNDRV_PCM_FMTBIT_S24_3LE; |
| 391 | break; |
| 392 | case 4: |
| 393 | runtime->hw.formats = SNDRV_PCM_FMTBIT_S32_LE; |
| 394 | break; |
| 395 | default: |
| 396 | runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE; |
| 397 | break; |
| 398 | } |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 399 | runtime->hw.channels_min = num_channels(c_chmask); |
| 400 | runtime->hw.period_bytes_min = 2 * uac2->c_prm.max_psize |
| 401 | / runtime->hw.periods_min; |
| 402 | } |
| 403 | |
| 404 | runtime->hw.rate_max = runtime->hw.rate_min; |
| 405 | runtime->hw.channels_max = runtime->hw.channels_min; |
| 406 | |
| 407 | snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); |
| 408 | |
| 409 | return 0; |
| 410 | } |
| 411 | |
| 412 | /* ALSA cries without these function pointers */ |
| 413 | static int uac2_pcm_null(struct snd_pcm_substream *substream) |
| 414 | { |
| 415 | return 0; |
| 416 | } |
| 417 | |
| 418 | static struct snd_pcm_ops uac2_pcm_ops = { |
| 419 | .open = uac2_pcm_open, |
| 420 | .close = uac2_pcm_null, |
| 421 | .ioctl = snd_pcm_lib_ioctl, |
| 422 | .hw_params = uac2_pcm_hw_params, |
| 423 | .hw_free = uac2_pcm_hw_free, |
| 424 | .trigger = uac2_pcm_trigger, |
| 425 | .pointer = uac2_pcm_pointer, |
| 426 | .prepare = uac2_pcm_null, |
| 427 | }; |
| 428 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 429 | static int snd_uac2_probe(struct platform_device *pdev) |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 430 | { |
| 431 | struct snd_uac2_chip *uac2 = pdev_to_uac2(pdev); |
| 432 | struct snd_card *card; |
| 433 | struct snd_pcm *pcm; |
Andrzej Pietrasiewicz | f8f93d2 | 2014-07-22 19:58:30 +0200 | [diff] [blame^] | 434 | #ifndef USB_FUAC2_INCLUDED |
| 435 | struct audio_dev *audio_dev; |
| 436 | struct f_uac2_opts *opts; |
| 437 | #endif |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 438 | int err; |
Andrzej Pietrasiewicz | f8f93d2 | 2014-07-22 19:58:30 +0200 | [diff] [blame^] | 439 | #ifndef USB_FUAC2_INCLUDED |
| 440 | int p_chmask, c_chmask; |
| 441 | |
| 442 | audio_dev = uac2_to_agdev(uac2); |
| 443 | opts = container_of(audio_dev->func.fi, struct f_uac2_opts, func_inst); |
| 444 | p_chmask = opts->p_chmask; |
| 445 | c_chmask = opts->c_chmask; |
| 446 | #endif |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 447 | |
| 448 | /* Choose any slot, with no id */ |
Takashi Iwai | 1334509 | 2014-01-29 15:04:31 +0100 | [diff] [blame] | 449 | err = snd_card_new(&pdev->dev, -1, NULL, THIS_MODULE, 0, &card); |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 450 | if (err < 0) |
| 451 | return err; |
| 452 | |
| 453 | uac2->card = card; |
| 454 | |
| 455 | /* |
| 456 | * Create first PCM device |
| 457 | * Create a substream only for non-zero channel streams |
| 458 | */ |
| 459 | err = snd_pcm_new(uac2->card, "UAC2 PCM", 0, |
| 460 | p_chmask ? 1 : 0, c_chmask ? 1 : 0, &pcm); |
| 461 | if (err < 0) |
| 462 | goto snd_fail; |
| 463 | |
| 464 | strcpy(pcm->name, "UAC2 PCM"); |
| 465 | pcm->private_data = uac2; |
| 466 | |
| 467 | uac2->pcm = pcm; |
| 468 | |
| 469 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &uac2_pcm_ops); |
| 470 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &uac2_pcm_ops); |
| 471 | |
| 472 | strcpy(card->driver, "UAC2_Gadget"); |
| 473 | strcpy(card->shortname, "UAC2_Gadget"); |
| 474 | sprintf(card->longname, "UAC2_Gadget %i", pdev->id); |
| 475 | |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 476 | snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, |
| 477 | snd_dma_continuous_data(GFP_KERNEL), 0, BUFF_SIZE_MAX); |
| 478 | |
| 479 | err = snd_card_register(card); |
| 480 | if (!err) { |
| 481 | platform_set_drvdata(pdev, card); |
| 482 | return 0; |
| 483 | } |
| 484 | |
| 485 | snd_fail: |
| 486 | snd_card_free(card); |
| 487 | |
| 488 | uac2->pcm = NULL; |
| 489 | uac2->card = NULL; |
| 490 | |
| 491 | return err; |
| 492 | } |
| 493 | |
Sebastian Andrzej Siewior | 1e1a27c | 2012-09-06 20:11:02 +0200 | [diff] [blame] | 494 | static int snd_uac2_remove(struct platform_device *pdev) |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 495 | { |
| 496 | struct snd_card *card = platform_get_drvdata(pdev); |
| 497 | |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 498 | if (card) |
| 499 | return snd_card_free(card); |
| 500 | |
| 501 | return 0; |
| 502 | } |
| 503 | |
| 504 | static int alsa_uac2_init(struct audio_dev *agdev) |
| 505 | { |
| 506 | struct snd_uac2_chip *uac2 = &agdev->uac2; |
| 507 | int err; |
| 508 | |
| 509 | uac2->pdrv.probe = snd_uac2_probe; |
| 510 | uac2->pdrv.remove = snd_uac2_remove; |
| 511 | uac2->pdrv.driver.name = uac2_name; |
| 512 | |
| 513 | uac2->pdev.id = 0; |
| 514 | uac2->pdev.name = uac2_name; |
| 515 | |
| 516 | /* Register snd_uac2 driver */ |
| 517 | err = platform_driver_register(&uac2->pdrv); |
| 518 | if (err) |
| 519 | return err; |
| 520 | |
| 521 | /* Register snd_uac2 device */ |
| 522 | err = platform_device_register(&uac2->pdev); |
| 523 | if (err) |
| 524 | platform_driver_unregister(&uac2->pdrv); |
| 525 | |
| 526 | return err; |
| 527 | } |
| 528 | |
| 529 | static void alsa_uac2_exit(struct audio_dev *agdev) |
| 530 | { |
| 531 | struct snd_uac2_chip *uac2 = &agdev->uac2; |
| 532 | |
| 533 | platform_driver_unregister(&uac2->pdrv); |
| 534 | platform_device_unregister(&uac2->pdev); |
| 535 | } |
| 536 | |
| 537 | |
| 538 | /* --------- USB Function Interface ------------- */ |
| 539 | |
| 540 | enum { |
| 541 | STR_ASSOC, |
| 542 | STR_IF_CTRL, |
| 543 | STR_CLKSRC_IN, |
| 544 | STR_CLKSRC_OUT, |
| 545 | STR_USB_IT, |
| 546 | STR_IO_IT, |
| 547 | STR_USB_OT, |
| 548 | STR_IO_OT, |
| 549 | STR_AS_OUT_ALT0, |
| 550 | STR_AS_OUT_ALT1, |
| 551 | STR_AS_IN_ALT0, |
| 552 | STR_AS_IN_ALT1, |
| 553 | }; |
| 554 | |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 555 | static char clksrc_in[8]; |
| 556 | static char clksrc_out[8]; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 557 | |
| 558 | static struct usb_string strings_fn[] = { |
Sebastian Andrzej Siewior | b36c347 | 2012-10-22 22:15:09 +0200 | [diff] [blame] | 559 | [STR_ASSOC].s = "Source/Sink", |
| 560 | [STR_IF_CTRL].s = "Topology Control", |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 561 | [STR_CLKSRC_IN].s = clksrc_in, |
| 562 | [STR_CLKSRC_OUT].s = clksrc_out, |
Sebastian Andrzej Siewior | b36c347 | 2012-10-22 22:15:09 +0200 | [diff] [blame] | 563 | [STR_USB_IT].s = "USBH Out", |
| 564 | [STR_IO_IT].s = "USBD Out", |
| 565 | [STR_USB_OT].s = "USBH In", |
| 566 | [STR_IO_OT].s = "USBD In", |
| 567 | [STR_AS_OUT_ALT0].s = "Playback Inactive", |
| 568 | [STR_AS_OUT_ALT1].s = "Playback Active", |
| 569 | [STR_AS_IN_ALT0].s = "Capture Inactive", |
| 570 | [STR_AS_IN_ALT1].s = "Capture Active", |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 571 | { }, |
| 572 | }; |
| 573 | |
| 574 | static struct usb_gadget_strings str_fn = { |
| 575 | .language = 0x0409, /* en-us */ |
| 576 | .strings = strings_fn, |
| 577 | }; |
| 578 | |
| 579 | static struct usb_gadget_strings *fn_strings[] = { |
| 580 | &str_fn, |
| 581 | NULL, |
| 582 | }; |
| 583 | |
| 584 | static struct usb_qualifier_descriptor devqual_desc = { |
| 585 | .bLength = sizeof devqual_desc, |
| 586 | .bDescriptorType = USB_DT_DEVICE_QUALIFIER, |
| 587 | |
| 588 | .bcdUSB = cpu_to_le16(0x200), |
| 589 | .bDeviceClass = USB_CLASS_MISC, |
| 590 | .bDeviceSubClass = 0x02, |
| 591 | .bDeviceProtocol = 0x01, |
| 592 | .bNumConfigurations = 1, |
| 593 | .bRESERVED = 0, |
| 594 | }; |
| 595 | |
| 596 | static struct usb_interface_assoc_descriptor iad_desc = { |
| 597 | .bLength = sizeof iad_desc, |
| 598 | .bDescriptorType = USB_DT_INTERFACE_ASSOCIATION, |
| 599 | |
| 600 | .bFirstInterface = 0, |
| 601 | .bInterfaceCount = 3, |
| 602 | .bFunctionClass = USB_CLASS_AUDIO, |
| 603 | .bFunctionSubClass = UAC2_FUNCTION_SUBCLASS_UNDEFINED, |
| 604 | .bFunctionProtocol = UAC_VERSION_2, |
| 605 | }; |
| 606 | |
| 607 | /* Audio Control Interface */ |
| 608 | static struct usb_interface_descriptor std_ac_if_desc = { |
| 609 | .bLength = sizeof std_ac_if_desc, |
| 610 | .bDescriptorType = USB_DT_INTERFACE, |
| 611 | |
| 612 | .bAlternateSetting = 0, |
| 613 | .bNumEndpoints = 0, |
| 614 | .bInterfaceClass = USB_CLASS_AUDIO, |
| 615 | .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL, |
| 616 | .bInterfaceProtocol = UAC_VERSION_2, |
| 617 | }; |
| 618 | |
| 619 | /* Clock source for IN traffic */ |
| 620 | struct uac_clock_source_descriptor in_clk_src_desc = { |
| 621 | .bLength = sizeof in_clk_src_desc, |
| 622 | .bDescriptorType = USB_DT_CS_INTERFACE, |
| 623 | |
| 624 | .bDescriptorSubtype = UAC2_CLOCK_SOURCE, |
| 625 | .bClockID = USB_IN_CLK_ID, |
| 626 | .bmAttributes = UAC_CLOCK_SOURCE_TYPE_INT_FIXED, |
| 627 | .bmControls = (CONTROL_RDONLY << CLK_FREQ_CTRL), |
| 628 | .bAssocTerminal = 0, |
| 629 | }; |
| 630 | |
| 631 | /* Clock source for OUT traffic */ |
| 632 | struct uac_clock_source_descriptor out_clk_src_desc = { |
| 633 | .bLength = sizeof out_clk_src_desc, |
| 634 | .bDescriptorType = USB_DT_CS_INTERFACE, |
| 635 | |
| 636 | .bDescriptorSubtype = UAC2_CLOCK_SOURCE, |
| 637 | .bClockID = USB_OUT_CLK_ID, |
| 638 | .bmAttributes = UAC_CLOCK_SOURCE_TYPE_INT_FIXED, |
| 639 | .bmControls = (CONTROL_RDONLY << CLK_FREQ_CTRL), |
| 640 | .bAssocTerminal = 0, |
| 641 | }; |
| 642 | |
| 643 | /* Input Terminal for USB_OUT */ |
| 644 | struct uac2_input_terminal_descriptor usb_out_it_desc = { |
| 645 | .bLength = sizeof usb_out_it_desc, |
| 646 | .bDescriptorType = USB_DT_CS_INTERFACE, |
| 647 | |
| 648 | .bDescriptorSubtype = UAC_INPUT_TERMINAL, |
| 649 | .bTerminalID = USB_OUT_IT_ID, |
| 650 | .wTerminalType = cpu_to_le16(UAC_TERMINAL_STREAMING), |
| 651 | .bAssocTerminal = 0, |
| 652 | .bCSourceID = USB_OUT_CLK_ID, |
| 653 | .iChannelNames = 0, |
| 654 | .bmControls = (CONTROL_RDWR << COPY_CTRL), |
| 655 | }; |
| 656 | |
| 657 | /* Input Terminal for I/O-In */ |
| 658 | struct uac2_input_terminal_descriptor io_in_it_desc = { |
| 659 | .bLength = sizeof io_in_it_desc, |
| 660 | .bDescriptorType = USB_DT_CS_INTERFACE, |
| 661 | |
| 662 | .bDescriptorSubtype = UAC_INPUT_TERMINAL, |
| 663 | .bTerminalID = IO_IN_IT_ID, |
| 664 | .wTerminalType = cpu_to_le16(UAC_INPUT_TERMINAL_UNDEFINED), |
| 665 | .bAssocTerminal = 0, |
| 666 | .bCSourceID = USB_IN_CLK_ID, |
| 667 | .iChannelNames = 0, |
| 668 | .bmControls = (CONTROL_RDWR << COPY_CTRL), |
| 669 | }; |
| 670 | |
| 671 | /* Ouput Terminal for USB_IN */ |
| 672 | struct uac2_output_terminal_descriptor usb_in_ot_desc = { |
| 673 | .bLength = sizeof usb_in_ot_desc, |
| 674 | .bDescriptorType = USB_DT_CS_INTERFACE, |
| 675 | |
| 676 | .bDescriptorSubtype = UAC_OUTPUT_TERMINAL, |
| 677 | .bTerminalID = USB_IN_OT_ID, |
| 678 | .wTerminalType = cpu_to_le16(UAC_TERMINAL_STREAMING), |
| 679 | .bAssocTerminal = 0, |
| 680 | .bSourceID = IO_IN_IT_ID, |
| 681 | .bCSourceID = USB_IN_CLK_ID, |
| 682 | .bmControls = (CONTROL_RDWR << COPY_CTRL), |
| 683 | }; |
| 684 | |
| 685 | /* Ouput Terminal for I/O-Out */ |
| 686 | struct uac2_output_terminal_descriptor io_out_ot_desc = { |
| 687 | .bLength = sizeof io_out_ot_desc, |
| 688 | .bDescriptorType = USB_DT_CS_INTERFACE, |
| 689 | |
| 690 | .bDescriptorSubtype = UAC_OUTPUT_TERMINAL, |
| 691 | .bTerminalID = IO_OUT_OT_ID, |
| 692 | .wTerminalType = cpu_to_le16(UAC_OUTPUT_TERMINAL_UNDEFINED), |
| 693 | .bAssocTerminal = 0, |
| 694 | .bSourceID = USB_OUT_IT_ID, |
| 695 | .bCSourceID = USB_OUT_CLK_ID, |
| 696 | .bmControls = (CONTROL_RDWR << COPY_CTRL), |
| 697 | }; |
| 698 | |
| 699 | struct uac2_ac_header_descriptor ac_hdr_desc = { |
| 700 | .bLength = sizeof ac_hdr_desc, |
| 701 | .bDescriptorType = USB_DT_CS_INTERFACE, |
| 702 | |
| 703 | .bDescriptorSubtype = UAC_MS_HEADER, |
| 704 | .bcdADC = cpu_to_le16(0x200), |
| 705 | .bCategory = UAC2_FUNCTION_IO_BOX, |
| 706 | .wTotalLength = sizeof in_clk_src_desc + sizeof out_clk_src_desc |
| 707 | + sizeof usb_out_it_desc + sizeof io_in_it_desc |
| 708 | + sizeof usb_in_ot_desc + sizeof io_out_ot_desc, |
| 709 | .bmControls = 0, |
| 710 | }; |
| 711 | |
| 712 | /* Audio Streaming OUT Interface - Alt0 */ |
| 713 | static struct usb_interface_descriptor std_as_out_if0_desc = { |
| 714 | .bLength = sizeof std_as_out_if0_desc, |
| 715 | .bDescriptorType = USB_DT_INTERFACE, |
| 716 | |
| 717 | .bAlternateSetting = 0, |
| 718 | .bNumEndpoints = 0, |
| 719 | .bInterfaceClass = USB_CLASS_AUDIO, |
| 720 | .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, |
| 721 | .bInterfaceProtocol = UAC_VERSION_2, |
| 722 | }; |
| 723 | |
| 724 | /* Audio Streaming OUT Interface - Alt1 */ |
| 725 | static struct usb_interface_descriptor std_as_out_if1_desc = { |
| 726 | .bLength = sizeof std_as_out_if1_desc, |
| 727 | .bDescriptorType = USB_DT_INTERFACE, |
| 728 | |
| 729 | .bAlternateSetting = 1, |
| 730 | .bNumEndpoints = 1, |
| 731 | .bInterfaceClass = USB_CLASS_AUDIO, |
| 732 | .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, |
| 733 | .bInterfaceProtocol = UAC_VERSION_2, |
| 734 | }; |
| 735 | |
| 736 | /* Audio Stream OUT Intface Desc */ |
| 737 | struct uac2_as_header_descriptor as_out_hdr_desc = { |
| 738 | .bLength = sizeof as_out_hdr_desc, |
| 739 | .bDescriptorType = USB_DT_CS_INTERFACE, |
| 740 | |
| 741 | .bDescriptorSubtype = UAC_AS_GENERAL, |
| 742 | .bTerminalLink = USB_OUT_IT_ID, |
| 743 | .bmControls = 0, |
| 744 | .bFormatType = UAC_FORMAT_TYPE_I, |
| 745 | .bmFormats = cpu_to_le32(UAC_FORMAT_TYPE_I_PCM), |
| 746 | .iChannelNames = 0, |
| 747 | }; |
| 748 | |
| 749 | /* Audio USB_OUT Format */ |
| 750 | struct uac2_format_type_i_descriptor as_out_fmt1_desc = { |
| 751 | .bLength = sizeof as_out_fmt1_desc, |
| 752 | .bDescriptorType = USB_DT_CS_INTERFACE, |
| 753 | .bDescriptorSubtype = UAC_FORMAT_TYPE, |
| 754 | .bFormatType = UAC_FORMAT_TYPE_I, |
| 755 | }; |
| 756 | |
| 757 | /* STD AS ISO OUT Endpoint */ |
| 758 | struct usb_endpoint_descriptor fs_epout_desc = { |
| 759 | .bLength = USB_DT_ENDPOINT_SIZE, |
| 760 | .bDescriptorType = USB_DT_ENDPOINT, |
| 761 | |
| 762 | .bEndpointAddress = USB_DIR_OUT, |
| 763 | .bmAttributes = USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ASYNC, |
| 764 | .bInterval = 1, |
| 765 | }; |
| 766 | |
| 767 | struct usb_endpoint_descriptor hs_epout_desc = { |
| 768 | .bLength = USB_DT_ENDPOINT_SIZE, |
| 769 | .bDescriptorType = USB_DT_ENDPOINT, |
| 770 | |
| 771 | .bmAttributes = USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ASYNC, |
| 772 | .bInterval = 4, |
| 773 | }; |
| 774 | |
| 775 | /* CS AS ISO OUT Endpoint */ |
| 776 | static struct uac2_iso_endpoint_descriptor as_iso_out_desc = { |
| 777 | .bLength = sizeof as_iso_out_desc, |
| 778 | .bDescriptorType = USB_DT_CS_ENDPOINT, |
| 779 | |
| 780 | .bDescriptorSubtype = UAC_EP_GENERAL, |
| 781 | .bmAttributes = 0, |
| 782 | .bmControls = 0, |
| 783 | .bLockDelayUnits = 0, |
| 784 | .wLockDelay = 0, |
| 785 | }; |
| 786 | |
| 787 | /* Audio Streaming IN Interface - Alt0 */ |
| 788 | static struct usb_interface_descriptor std_as_in_if0_desc = { |
| 789 | .bLength = sizeof std_as_in_if0_desc, |
| 790 | .bDescriptorType = USB_DT_INTERFACE, |
| 791 | |
| 792 | .bAlternateSetting = 0, |
| 793 | .bNumEndpoints = 0, |
| 794 | .bInterfaceClass = USB_CLASS_AUDIO, |
| 795 | .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, |
| 796 | .bInterfaceProtocol = UAC_VERSION_2, |
| 797 | }; |
| 798 | |
| 799 | /* Audio Streaming IN Interface - Alt1 */ |
| 800 | static struct usb_interface_descriptor std_as_in_if1_desc = { |
| 801 | .bLength = sizeof std_as_in_if1_desc, |
| 802 | .bDescriptorType = USB_DT_INTERFACE, |
| 803 | |
| 804 | .bAlternateSetting = 1, |
| 805 | .bNumEndpoints = 1, |
| 806 | .bInterfaceClass = USB_CLASS_AUDIO, |
| 807 | .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, |
| 808 | .bInterfaceProtocol = UAC_VERSION_2, |
| 809 | }; |
| 810 | |
| 811 | /* Audio Stream IN Intface Desc */ |
| 812 | struct uac2_as_header_descriptor as_in_hdr_desc = { |
| 813 | .bLength = sizeof as_in_hdr_desc, |
| 814 | .bDescriptorType = USB_DT_CS_INTERFACE, |
| 815 | |
| 816 | .bDescriptorSubtype = UAC_AS_GENERAL, |
| 817 | .bTerminalLink = USB_IN_OT_ID, |
| 818 | .bmControls = 0, |
| 819 | .bFormatType = UAC_FORMAT_TYPE_I, |
| 820 | .bmFormats = cpu_to_le32(UAC_FORMAT_TYPE_I_PCM), |
| 821 | .iChannelNames = 0, |
| 822 | }; |
| 823 | |
| 824 | /* Audio USB_IN Format */ |
| 825 | struct uac2_format_type_i_descriptor as_in_fmt1_desc = { |
| 826 | .bLength = sizeof as_in_fmt1_desc, |
| 827 | .bDescriptorType = USB_DT_CS_INTERFACE, |
| 828 | .bDescriptorSubtype = UAC_FORMAT_TYPE, |
| 829 | .bFormatType = UAC_FORMAT_TYPE_I, |
| 830 | }; |
| 831 | |
| 832 | /* STD AS ISO IN Endpoint */ |
| 833 | struct usb_endpoint_descriptor fs_epin_desc = { |
| 834 | .bLength = USB_DT_ENDPOINT_SIZE, |
| 835 | .bDescriptorType = USB_DT_ENDPOINT, |
| 836 | |
| 837 | .bEndpointAddress = USB_DIR_IN, |
| 838 | .bmAttributes = USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ASYNC, |
| 839 | .bInterval = 1, |
| 840 | }; |
| 841 | |
| 842 | struct usb_endpoint_descriptor hs_epin_desc = { |
| 843 | .bLength = USB_DT_ENDPOINT_SIZE, |
| 844 | .bDescriptorType = USB_DT_ENDPOINT, |
| 845 | |
| 846 | .bmAttributes = USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ASYNC, |
| 847 | .bInterval = 4, |
| 848 | }; |
| 849 | |
| 850 | /* CS AS ISO IN Endpoint */ |
| 851 | static struct uac2_iso_endpoint_descriptor as_iso_in_desc = { |
| 852 | .bLength = sizeof as_iso_in_desc, |
| 853 | .bDescriptorType = USB_DT_CS_ENDPOINT, |
| 854 | |
| 855 | .bDescriptorSubtype = UAC_EP_GENERAL, |
| 856 | .bmAttributes = 0, |
| 857 | .bmControls = 0, |
| 858 | .bLockDelayUnits = 0, |
| 859 | .wLockDelay = 0, |
| 860 | }; |
| 861 | |
| 862 | static struct usb_descriptor_header *fs_audio_desc[] = { |
| 863 | (struct usb_descriptor_header *)&iad_desc, |
| 864 | (struct usb_descriptor_header *)&std_ac_if_desc, |
| 865 | |
| 866 | (struct usb_descriptor_header *)&ac_hdr_desc, |
| 867 | (struct usb_descriptor_header *)&in_clk_src_desc, |
| 868 | (struct usb_descriptor_header *)&out_clk_src_desc, |
| 869 | (struct usb_descriptor_header *)&usb_out_it_desc, |
| 870 | (struct usb_descriptor_header *)&io_in_it_desc, |
| 871 | (struct usb_descriptor_header *)&usb_in_ot_desc, |
| 872 | (struct usb_descriptor_header *)&io_out_ot_desc, |
| 873 | |
| 874 | (struct usb_descriptor_header *)&std_as_out_if0_desc, |
| 875 | (struct usb_descriptor_header *)&std_as_out_if1_desc, |
| 876 | |
| 877 | (struct usb_descriptor_header *)&as_out_hdr_desc, |
| 878 | (struct usb_descriptor_header *)&as_out_fmt1_desc, |
| 879 | (struct usb_descriptor_header *)&fs_epout_desc, |
| 880 | (struct usb_descriptor_header *)&as_iso_out_desc, |
| 881 | |
| 882 | (struct usb_descriptor_header *)&std_as_in_if0_desc, |
| 883 | (struct usb_descriptor_header *)&std_as_in_if1_desc, |
| 884 | |
| 885 | (struct usb_descriptor_header *)&as_in_hdr_desc, |
| 886 | (struct usb_descriptor_header *)&as_in_fmt1_desc, |
| 887 | (struct usb_descriptor_header *)&fs_epin_desc, |
| 888 | (struct usb_descriptor_header *)&as_iso_in_desc, |
| 889 | NULL, |
| 890 | }; |
| 891 | |
| 892 | static struct usb_descriptor_header *hs_audio_desc[] = { |
| 893 | (struct usb_descriptor_header *)&iad_desc, |
| 894 | (struct usb_descriptor_header *)&std_ac_if_desc, |
| 895 | |
| 896 | (struct usb_descriptor_header *)&ac_hdr_desc, |
| 897 | (struct usb_descriptor_header *)&in_clk_src_desc, |
| 898 | (struct usb_descriptor_header *)&out_clk_src_desc, |
| 899 | (struct usb_descriptor_header *)&usb_out_it_desc, |
| 900 | (struct usb_descriptor_header *)&io_in_it_desc, |
| 901 | (struct usb_descriptor_header *)&usb_in_ot_desc, |
| 902 | (struct usb_descriptor_header *)&io_out_ot_desc, |
| 903 | |
| 904 | (struct usb_descriptor_header *)&std_as_out_if0_desc, |
| 905 | (struct usb_descriptor_header *)&std_as_out_if1_desc, |
| 906 | |
| 907 | (struct usb_descriptor_header *)&as_out_hdr_desc, |
| 908 | (struct usb_descriptor_header *)&as_out_fmt1_desc, |
| 909 | (struct usb_descriptor_header *)&hs_epout_desc, |
| 910 | (struct usb_descriptor_header *)&as_iso_out_desc, |
| 911 | |
| 912 | (struct usb_descriptor_header *)&std_as_in_if0_desc, |
| 913 | (struct usb_descriptor_header *)&std_as_in_if1_desc, |
| 914 | |
| 915 | (struct usb_descriptor_header *)&as_in_hdr_desc, |
| 916 | (struct usb_descriptor_header *)&as_in_fmt1_desc, |
| 917 | (struct usb_descriptor_header *)&hs_epin_desc, |
| 918 | (struct usb_descriptor_header *)&as_iso_in_desc, |
| 919 | NULL, |
| 920 | }; |
| 921 | |
| 922 | struct cntrl_cur_lay3 { |
| 923 | __u32 dCUR; |
| 924 | }; |
| 925 | |
| 926 | struct cntrl_range_lay3 { |
| 927 | __u16 wNumSubRanges; |
| 928 | __u32 dMIN; |
| 929 | __u32 dMAX; |
| 930 | __u32 dRES; |
| 931 | } __packed; |
| 932 | |
| 933 | static inline void |
| 934 | free_ep(struct uac2_rtd_params *prm, struct usb_ep *ep) |
| 935 | { |
Jassi Brar | eb127cb | 2013-05-30 18:23:33 +0530 | [diff] [blame] | 936 | struct snd_uac2_chip *uac2 = prm->uac2; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 937 | int i; |
| 938 | |
| 939 | prm->ep_enabled = false; |
| 940 | |
| 941 | for (i = 0; i < USB_XFERS; i++) { |
| 942 | if (prm->ureq[i].req) { |
| 943 | usb_ep_dequeue(ep, prm->ureq[i].req); |
| 944 | usb_ep_free_request(ep, prm->ureq[i].req); |
| 945 | prm->ureq[i].req = NULL; |
| 946 | } |
| 947 | } |
| 948 | |
| 949 | if (usb_ep_disable(ep)) |
| 950 | dev_err(&uac2->pdev.dev, |
| 951 | "%s:%d Error!\n", __func__, __LINE__); |
| 952 | } |
| 953 | |
Andrzej Pietrasiewicz | f8f93d2 | 2014-07-22 19:58:30 +0200 | [diff] [blame^] | 954 | static int |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 955 | afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) |
| 956 | { |
| 957 | struct audio_dev *agdev = func_to_agdev(fn); |
| 958 | struct snd_uac2_chip *uac2 = &agdev->uac2; |
| 959 | struct usb_composite_dev *cdev = cfg->cdev; |
| 960 | struct usb_gadget *gadget = cdev->gadget; |
| 961 | struct uac2_rtd_params *prm; |
Andrzej Pietrasiewicz | f8f93d2 | 2014-07-22 19:58:30 +0200 | [diff] [blame^] | 962 | #ifndef USB_FUAC2_INCLUDED |
| 963 | struct f_uac2_opts *uac2_opts; |
| 964 | #endif |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 965 | int ret; |
| 966 | |
Andrzej Pietrasiewicz | f8f93d2 | 2014-07-22 19:58:30 +0200 | [diff] [blame^] | 967 | #ifndef USB_FUAC2_INCLUDED |
| 968 | uac2_opts = container_of(fn->fi, struct f_uac2_opts, func_inst); |
| 969 | #endif |
| 970 | |
| 971 | ret = usb_string_ids_tab(cfg->cdev, strings_fn); |
| 972 | if (ret) |
| 973 | return ret; |
| 974 | iad_desc.iFunction = strings_fn[STR_ASSOC].id; |
| 975 | std_ac_if_desc.iInterface = strings_fn[STR_IF_CTRL].id; |
| 976 | in_clk_src_desc.iClockSource = strings_fn[STR_CLKSRC_IN].id; |
| 977 | out_clk_src_desc.iClockSource = strings_fn[STR_CLKSRC_OUT].id; |
| 978 | usb_out_it_desc.iTerminal = strings_fn[STR_USB_IT].id; |
| 979 | io_in_it_desc.iTerminal = strings_fn[STR_IO_IT].id; |
| 980 | usb_in_ot_desc.iTerminal = strings_fn[STR_USB_OT].id; |
| 981 | io_out_ot_desc.iTerminal = strings_fn[STR_IO_OT].id; |
| 982 | std_as_out_if0_desc.iInterface = strings_fn[STR_AS_OUT_ALT0].id; |
| 983 | std_as_out_if1_desc.iInterface = strings_fn[STR_AS_OUT_ALT1].id; |
| 984 | std_as_in_if0_desc.iInterface = strings_fn[STR_AS_IN_ALT0].id; |
| 985 | std_as_in_if1_desc.iInterface = strings_fn[STR_AS_IN_ALT1].id; |
| 986 | |
| 987 | #ifndef USB_FUAC2_INCLUDED |
| 988 | /* Initialize the configurable parameters */ |
| 989 | usb_out_it_desc.bNrChannels = num_channels(uac2_opts->c_chmask); |
| 990 | usb_out_it_desc.bmChannelConfig = cpu_to_le32(uac2_opts->c_chmask); |
| 991 | io_in_it_desc.bNrChannels = num_channels(uac2_opts->p_chmask); |
| 992 | io_in_it_desc.bmChannelConfig = cpu_to_le32(uac2_opts->p_chmask); |
| 993 | as_out_hdr_desc.bNrChannels = num_channels(uac2_opts->c_chmask); |
| 994 | as_out_hdr_desc.bmChannelConfig = cpu_to_le32(uac2_opts->c_chmask); |
| 995 | as_in_hdr_desc.bNrChannels = num_channels(uac2_opts->p_chmask); |
| 996 | as_in_hdr_desc.bmChannelConfig = cpu_to_le32(uac2_opts->p_chmask); |
| 997 | as_out_fmt1_desc.bSubslotSize = uac2_opts->c_ssize; |
| 998 | as_out_fmt1_desc.bBitResolution = uac2_opts->c_ssize * 8; |
| 999 | as_in_fmt1_desc.bSubslotSize = uac2_opts->p_ssize; |
| 1000 | as_in_fmt1_desc.bBitResolution = uac2_opts->p_ssize * 8; |
| 1001 | |
| 1002 | snprintf(clksrc_in, sizeof(clksrc_in), "%uHz", uac2_opts->p_srate); |
| 1003 | snprintf(clksrc_out, sizeof(clksrc_out), "%uHz", uac2_opts->c_srate); |
| 1004 | #endif |
| 1005 | |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1006 | ret = usb_interface_id(cfg, fn); |
| 1007 | if (ret < 0) { |
| 1008 | dev_err(&uac2->pdev.dev, |
| 1009 | "%s:%d Error!\n", __func__, __LINE__); |
| 1010 | return ret; |
| 1011 | } |
| 1012 | std_ac_if_desc.bInterfaceNumber = ret; |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 1013 | agdev->ac_intf = ret; |
| 1014 | agdev->ac_alt = 0; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1015 | |
| 1016 | ret = usb_interface_id(cfg, fn); |
| 1017 | if (ret < 0) { |
| 1018 | dev_err(&uac2->pdev.dev, |
| 1019 | "%s:%d Error!\n", __func__, __LINE__); |
| 1020 | return ret; |
| 1021 | } |
| 1022 | std_as_out_if0_desc.bInterfaceNumber = ret; |
| 1023 | std_as_out_if1_desc.bInterfaceNumber = ret; |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 1024 | agdev->as_out_intf = ret; |
| 1025 | agdev->as_out_alt = 0; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1026 | |
| 1027 | ret = usb_interface_id(cfg, fn); |
| 1028 | if (ret < 0) { |
| 1029 | dev_err(&uac2->pdev.dev, |
| 1030 | "%s:%d Error!\n", __func__, __LINE__); |
| 1031 | return ret; |
| 1032 | } |
| 1033 | std_as_in_if0_desc.bInterfaceNumber = ret; |
| 1034 | std_as_in_if1_desc.bInterfaceNumber = ret; |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 1035 | agdev->as_in_intf = ret; |
| 1036 | agdev->as_in_alt = 0; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1037 | |
| 1038 | agdev->out_ep = usb_ep_autoconfig(gadget, &fs_epout_desc); |
Sebastian Andrzej Siewior | 391aa85 | 2012-10-22 22:14:59 +0200 | [diff] [blame] | 1039 | if (!agdev->out_ep) { |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1040 | dev_err(&uac2->pdev.dev, |
| 1041 | "%s:%d Error!\n", __func__, __LINE__); |
Sebastian Andrzej Siewior | 391aa85 | 2012-10-22 22:14:59 +0200 | [diff] [blame] | 1042 | goto err; |
| 1043 | } |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1044 | agdev->out_ep->driver_data = agdev; |
| 1045 | |
| 1046 | agdev->in_ep = usb_ep_autoconfig(gadget, &fs_epin_desc); |
Sebastian Andrzej Siewior | 391aa85 | 2012-10-22 22:14:59 +0200 | [diff] [blame] | 1047 | if (!agdev->in_ep) { |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1048 | dev_err(&uac2->pdev.dev, |
| 1049 | "%s:%d Error!\n", __func__, __LINE__); |
Sebastian Andrzej Siewior | 391aa85 | 2012-10-22 22:14:59 +0200 | [diff] [blame] | 1050 | goto err; |
| 1051 | } |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1052 | agdev->in_ep->driver_data = agdev; |
| 1053 | |
Jassi Brar | eb127cb | 2013-05-30 18:23:33 +0530 | [diff] [blame] | 1054 | uac2->p_prm.uac2 = uac2; |
| 1055 | uac2->c_prm.uac2 = uac2; |
| 1056 | |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1057 | hs_epout_desc.bEndpointAddress = fs_epout_desc.bEndpointAddress; |
| 1058 | hs_epout_desc.wMaxPacketSize = fs_epout_desc.wMaxPacketSize; |
| 1059 | hs_epin_desc.bEndpointAddress = fs_epin_desc.bEndpointAddress; |
| 1060 | hs_epin_desc.wMaxPacketSize = fs_epin_desc.wMaxPacketSize; |
| 1061 | |
Sebastian Andrzej Siewior | 10287ba | 2012-10-22 22:15:06 +0200 | [diff] [blame] | 1062 | ret = usb_assign_descriptors(fn, fs_audio_desc, hs_audio_desc, NULL); |
| 1063 | if (ret) |
| 1064 | goto err; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1065 | |
| 1066 | prm = &agdev->uac2.c_prm; |
| 1067 | prm->max_psize = hs_epout_desc.wMaxPacketSize; |
| 1068 | prm->rbuf = kzalloc(prm->max_psize * USB_XFERS, GFP_KERNEL); |
| 1069 | if (!prm->rbuf) { |
| 1070 | prm->max_psize = 0; |
Sebastian Andrzej Siewior | 391aa85 | 2012-10-22 22:14:59 +0200 | [diff] [blame] | 1071 | goto err; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1072 | } |
| 1073 | |
| 1074 | prm = &agdev->uac2.p_prm; |
| 1075 | prm->max_psize = hs_epin_desc.wMaxPacketSize; |
| 1076 | prm->rbuf = kzalloc(prm->max_psize * USB_XFERS, GFP_KERNEL); |
| 1077 | if (!prm->rbuf) { |
| 1078 | prm->max_psize = 0; |
Sebastian Andrzej Siewior | 391aa85 | 2012-10-22 22:14:59 +0200 | [diff] [blame] | 1079 | goto err; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1080 | } |
| 1081 | |
Sebastian Andrzej Siewior | 391aa85 | 2012-10-22 22:14:59 +0200 | [diff] [blame] | 1082 | ret = alsa_uac2_init(agdev); |
| 1083 | if (ret) |
| 1084 | goto err; |
| 1085 | return 0; |
| 1086 | err: |
| 1087 | kfree(agdev->uac2.p_prm.rbuf); |
| 1088 | kfree(agdev->uac2.c_prm.rbuf); |
Sebastian Andrzej Siewior | 10287ba | 2012-10-22 22:15:06 +0200 | [diff] [blame] | 1089 | usb_free_all_descriptors(fn); |
Sebastian Andrzej Siewior | 391aa85 | 2012-10-22 22:14:59 +0200 | [diff] [blame] | 1090 | if (agdev->in_ep) |
| 1091 | agdev->in_ep->driver_data = NULL; |
| 1092 | if (agdev->out_ep) |
| 1093 | agdev->out_ep->driver_data = NULL; |
| 1094 | return -EINVAL; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1095 | } |
| 1096 | |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1097 | static int |
| 1098 | afunc_set_alt(struct usb_function *fn, unsigned intf, unsigned alt) |
| 1099 | { |
| 1100 | struct usb_composite_dev *cdev = fn->config->cdev; |
| 1101 | struct audio_dev *agdev = func_to_agdev(fn); |
| 1102 | struct snd_uac2_chip *uac2 = &agdev->uac2; |
| 1103 | struct usb_gadget *gadget = cdev->gadget; |
| 1104 | struct usb_request *req; |
| 1105 | struct usb_ep *ep; |
| 1106 | struct uac2_rtd_params *prm; |
| 1107 | int i; |
| 1108 | |
| 1109 | /* No i/f has more than 2 alt settings */ |
| 1110 | if (alt > 1) { |
| 1111 | dev_err(&uac2->pdev.dev, |
| 1112 | "%s:%d Error!\n", __func__, __LINE__); |
| 1113 | return -EINVAL; |
| 1114 | } |
| 1115 | |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 1116 | if (intf == agdev->ac_intf) { |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1117 | /* Control I/f has only 1 AltSetting - 0 */ |
| 1118 | if (alt) { |
| 1119 | dev_err(&uac2->pdev.dev, |
| 1120 | "%s:%d Error!\n", __func__, __LINE__); |
| 1121 | return -EINVAL; |
| 1122 | } |
| 1123 | return 0; |
| 1124 | } |
| 1125 | |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 1126 | if (intf == agdev->as_out_intf) { |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1127 | ep = agdev->out_ep; |
| 1128 | prm = &uac2->c_prm; |
| 1129 | config_ep_by_speed(gadget, fn, ep); |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 1130 | agdev->as_out_alt = alt; |
| 1131 | } else if (intf == agdev->as_in_intf) { |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1132 | ep = agdev->in_ep; |
| 1133 | prm = &uac2->p_prm; |
| 1134 | config_ep_by_speed(gadget, fn, ep); |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 1135 | agdev->as_in_alt = alt; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1136 | } else { |
| 1137 | dev_err(&uac2->pdev.dev, |
| 1138 | "%s:%d Error!\n", __func__, __LINE__); |
| 1139 | return -EINVAL; |
| 1140 | } |
| 1141 | |
| 1142 | if (alt == 0) { |
| 1143 | free_ep(prm, ep); |
| 1144 | return 0; |
| 1145 | } |
| 1146 | |
| 1147 | prm->ep_enabled = true; |
| 1148 | usb_ep_enable(ep); |
| 1149 | |
| 1150 | for (i = 0; i < USB_XFERS; i++) { |
| 1151 | if (prm->ureq[i].req) { |
| 1152 | if (usb_ep_queue(ep, prm->ureq[i].req, GFP_ATOMIC)) |
| 1153 | dev_err(&uac2->pdev.dev, "%d Error!\n", |
| 1154 | __LINE__); |
| 1155 | continue; |
| 1156 | } |
| 1157 | |
| 1158 | req = usb_ep_alloc_request(ep, GFP_ATOMIC); |
| 1159 | if (req == NULL) { |
| 1160 | dev_err(&uac2->pdev.dev, |
| 1161 | "%s:%d Error!\n", __func__, __LINE__); |
| 1162 | return -EINVAL; |
| 1163 | } |
| 1164 | |
| 1165 | prm->ureq[i].req = req; |
| 1166 | prm->ureq[i].pp = prm; |
| 1167 | |
| 1168 | req->zero = 0; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1169 | req->context = &prm->ureq[i]; |
| 1170 | req->length = prm->max_psize; |
| 1171 | req->complete = agdev_iso_complete; |
| 1172 | req->buf = prm->rbuf + i * req->length; |
| 1173 | |
| 1174 | if (usb_ep_queue(ep, req, GFP_ATOMIC)) |
| 1175 | dev_err(&uac2->pdev.dev, "%d Error!\n", __LINE__); |
| 1176 | } |
| 1177 | |
| 1178 | return 0; |
| 1179 | } |
| 1180 | |
| 1181 | static int |
| 1182 | afunc_get_alt(struct usb_function *fn, unsigned intf) |
| 1183 | { |
| 1184 | struct audio_dev *agdev = func_to_agdev(fn); |
| 1185 | struct snd_uac2_chip *uac2 = &agdev->uac2; |
| 1186 | |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 1187 | if (intf == agdev->ac_intf) |
| 1188 | return agdev->ac_alt; |
| 1189 | else if (intf == agdev->as_out_intf) |
| 1190 | return agdev->as_out_alt; |
| 1191 | else if (intf == agdev->as_in_intf) |
| 1192 | return agdev->as_in_alt; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1193 | else |
| 1194 | dev_err(&uac2->pdev.dev, |
| 1195 | "%s:%d Invalid Interface %d!\n", |
| 1196 | __func__, __LINE__, intf); |
| 1197 | |
| 1198 | return -EINVAL; |
| 1199 | } |
| 1200 | |
| 1201 | static void |
| 1202 | afunc_disable(struct usb_function *fn) |
| 1203 | { |
| 1204 | struct audio_dev *agdev = func_to_agdev(fn); |
| 1205 | struct snd_uac2_chip *uac2 = &agdev->uac2; |
| 1206 | |
| 1207 | free_ep(&uac2->p_prm, agdev->in_ep); |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 1208 | agdev->as_in_alt = 0; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1209 | |
| 1210 | free_ep(&uac2->c_prm, agdev->out_ep); |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 1211 | agdev->as_out_alt = 0; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1212 | } |
| 1213 | |
| 1214 | static int |
| 1215 | in_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr) |
| 1216 | { |
| 1217 | struct usb_request *req = fn->config->cdev->req; |
| 1218 | struct audio_dev *agdev = func_to_agdev(fn); |
| 1219 | struct snd_uac2_chip *uac2 = &agdev->uac2; |
Andrzej Pietrasiewicz | f8f93d2 | 2014-07-22 19:58:30 +0200 | [diff] [blame^] | 1220 | #ifndef USB_FUAC2_INCLUDED |
| 1221 | struct f_uac2_opts *opts; |
| 1222 | #endif |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1223 | u16 w_length = le16_to_cpu(cr->wLength); |
| 1224 | u16 w_index = le16_to_cpu(cr->wIndex); |
| 1225 | u16 w_value = le16_to_cpu(cr->wValue); |
| 1226 | u8 entity_id = (w_index >> 8) & 0xff; |
| 1227 | u8 control_selector = w_value >> 8; |
| 1228 | int value = -EOPNOTSUPP; |
Andrzej Pietrasiewicz | f8f93d2 | 2014-07-22 19:58:30 +0200 | [diff] [blame^] | 1229 | #ifndef USB_FUAC2_INCLUDED |
| 1230 | int p_srate, c_srate; |
| 1231 | |
| 1232 | opts = container_of(agdev->func.fi, struct f_uac2_opts, func_inst); |
| 1233 | p_srate = opts->p_srate; |
| 1234 | c_srate = opts->c_srate; |
| 1235 | #endif |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1236 | |
| 1237 | if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) { |
| 1238 | struct cntrl_cur_lay3 c; |
| 1239 | |
| 1240 | if (entity_id == USB_IN_CLK_ID) |
| 1241 | c.dCUR = p_srate; |
| 1242 | else if (entity_id == USB_OUT_CLK_ID) |
| 1243 | c.dCUR = c_srate; |
| 1244 | |
| 1245 | value = min_t(unsigned, w_length, sizeof c); |
| 1246 | memcpy(req->buf, &c, value); |
| 1247 | } else if (control_selector == UAC2_CS_CONTROL_CLOCK_VALID) { |
| 1248 | *(u8 *)req->buf = 1; |
| 1249 | value = min_t(unsigned, w_length, 1); |
| 1250 | } else { |
| 1251 | dev_err(&uac2->pdev.dev, |
| 1252 | "%s:%d control_selector=%d TODO!\n", |
| 1253 | __func__, __LINE__, control_selector); |
| 1254 | } |
| 1255 | |
| 1256 | return value; |
| 1257 | } |
| 1258 | |
| 1259 | static int |
| 1260 | in_rq_range(struct usb_function *fn, const struct usb_ctrlrequest *cr) |
| 1261 | { |
| 1262 | struct usb_request *req = fn->config->cdev->req; |
| 1263 | struct audio_dev *agdev = func_to_agdev(fn); |
| 1264 | struct snd_uac2_chip *uac2 = &agdev->uac2; |
Andrzej Pietrasiewicz | f8f93d2 | 2014-07-22 19:58:30 +0200 | [diff] [blame^] | 1265 | #ifndef USB_FUAC2_INCLUDED |
| 1266 | struct f_uac2_opts *opts; |
| 1267 | #endif |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1268 | u16 w_length = le16_to_cpu(cr->wLength); |
| 1269 | u16 w_index = le16_to_cpu(cr->wIndex); |
| 1270 | u16 w_value = le16_to_cpu(cr->wValue); |
| 1271 | u8 entity_id = (w_index >> 8) & 0xff; |
| 1272 | u8 control_selector = w_value >> 8; |
| 1273 | struct cntrl_range_lay3 r; |
| 1274 | int value = -EOPNOTSUPP; |
Andrzej Pietrasiewicz | f8f93d2 | 2014-07-22 19:58:30 +0200 | [diff] [blame^] | 1275 | #ifndef USB_FUAC2_INCLUDED |
| 1276 | int p_srate, c_srate; |
| 1277 | |
| 1278 | opts = container_of(agdev->func.fi, struct f_uac2_opts, func_inst); |
| 1279 | p_srate = opts->p_srate; |
| 1280 | c_srate = opts->c_srate; |
| 1281 | #endif |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1282 | |
| 1283 | if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) { |
| 1284 | if (entity_id == USB_IN_CLK_ID) |
| 1285 | r.dMIN = p_srate; |
| 1286 | else if (entity_id == USB_OUT_CLK_ID) |
| 1287 | r.dMIN = c_srate; |
| 1288 | else |
| 1289 | return -EOPNOTSUPP; |
| 1290 | |
| 1291 | r.dMAX = r.dMIN; |
| 1292 | r.dRES = 0; |
| 1293 | r.wNumSubRanges = 1; |
| 1294 | |
| 1295 | value = min_t(unsigned, w_length, sizeof r); |
| 1296 | memcpy(req->buf, &r, value); |
| 1297 | } else { |
| 1298 | dev_err(&uac2->pdev.dev, |
| 1299 | "%s:%d control_selector=%d TODO!\n", |
| 1300 | __func__, __LINE__, control_selector); |
| 1301 | } |
| 1302 | |
| 1303 | return value; |
| 1304 | } |
| 1305 | |
| 1306 | static int |
| 1307 | ac_rq_in(struct usb_function *fn, const struct usb_ctrlrequest *cr) |
| 1308 | { |
| 1309 | if (cr->bRequest == UAC2_CS_CUR) |
| 1310 | return in_rq_cur(fn, cr); |
| 1311 | else if (cr->bRequest == UAC2_CS_RANGE) |
| 1312 | return in_rq_range(fn, cr); |
| 1313 | else |
| 1314 | return -EOPNOTSUPP; |
| 1315 | } |
| 1316 | |
| 1317 | static int |
| 1318 | out_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr) |
| 1319 | { |
| 1320 | u16 w_length = le16_to_cpu(cr->wLength); |
| 1321 | u16 w_value = le16_to_cpu(cr->wValue); |
| 1322 | u8 control_selector = w_value >> 8; |
| 1323 | |
| 1324 | if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) |
| 1325 | return w_length; |
| 1326 | |
| 1327 | return -EOPNOTSUPP; |
| 1328 | } |
| 1329 | |
| 1330 | static int |
| 1331 | setup_rq_inf(struct usb_function *fn, const struct usb_ctrlrequest *cr) |
| 1332 | { |
| 1333 | struct audio_dev *agdev = func_to_agdev(fn); |
| 1334 | struct snd_uac2_chip *uac2 = &agdev->uac2; |
| 1335 | u16 w_index = le16_to_cpu(cr->wIndex); |
| 1336 | u8 intf = w_index & 0xff; |
| 1337 | |
Sebastian Andrzej Siewior | 4ce6357 | 2012-10-22 22:15:08 +0200 | [diff] [blame] | 1338 | if (intf != agdev->ac_intf) { |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1339 | dev_err(&uac2->pdev.dev, |
| 1340 | "%s:%d Error!\n", __func__, __LINE__); |
| 1341 | return -EOPNOTSUPP; |
| 1342 | } |
| 1343 | |
| 1344 | if (cr->bRequestType & USB_DIR_IN) |
| 1345 | return ac_rq_in(fn, cr); |
| 1346 | else if (cr->bRequest == UAC2_CS_CUR) |
| 1347 | return out_rq_cur(fn, cr); |
| 1348 | |
| 1349 | return -EOPNOTSUPP; |
| 1350 | } |
| 1351 | |
| 1352 | static int |
| 1353 | afunc_setup(struct usb_function *fn, const struct usb_ctrlrequest *cr) |
| 1354 | { |
| 1355 | struct usb_composite_dev *cdev = fn->config->cdev; |
| 1356 | struct audio_dev *agdev = func_to_agdev(fn); |
| 1357 | struct snd_uac2_chip *uac2 = &agdev->uac2; |
| 1358 | struct usb_request *req = cdev->req; |
| 1359 | u16 w_length = le16_to_cpu(cr->wLength); |
| 1360 | int value = -EOPNOTSUPP; |
| 1361 | |
| 1362 | /* Only Class specific requests are supposed to reach here */ |
| 1363 | if ((cr->bRequestType & USB_TYPE_MASK) != USB_TYPE_CLASS) |
| 1364 | return -EOPNOTSUPP; |
| 1365 | |
| 1366 | if ((cr->bRequestType & USB_RECIP_MASK) == USB_RECIP_INTERFACE) |
| 1367 | value = setup_rq_inf(fn, cr); |
| 1368 | else |
| 1369 | dev_err(&uac2->pdev.dev, "%s:%d Error!\n", __func__, __LINE__); |
| 1370 | |
| 1371 | if (value >= 0) { |
| 1372 | req->length = value; |
| 1373 | req->zero = value < w_length; |
| 1374 | value = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC); |
| 1375 | if (value < 0) { |
| 1376 | dev_err(&uac2->pdev.dev, |
| 1377 | "%s:%d Error!\n", __func__, __LINE__); |
| 1378 | req->status = 0; |
| 1379 | } |
| 1380 | } |
| 1381 | |
| 1382 | return value; |
| 1383 | } |
| 1384 | |
Andrzej Pietrasiewicz | f8f93d2 | 2014-07-22 19:58:30 +0200 | [diff] [blame^] | 1385 | #ifdef USB_FUAC2_INCLUDED |
| 1386 | |
| 1387 | static void |
| 1388 | old_afunc_unbind(struct usb_configuration *cfg, struct usb_function *fn) |
| 1389 | { |
| 1390 | struct audio_dev *agdev = func_to_agdev(fn); |
| 1391 | struct uac2_rtd_params *prm; |
| 1392 | |
| 1393 | alsa_uac2_exit(agdev); |
| 1394 | |
| 1395 | prm = &agdev->uac2.p_prm; |
| 1396 | kfree(prm->rbuf); |
| 1397 | |
| 1398 | prm = &agdev->uac2.c_prm; |
| 1399 | kfree(prm->rbuf); |
| 1400 | usb_free_all_descriptors(fn); |
| 1401 | |
| 1402 | if (agdev->in_ep) |
| 1403 | agdev->in_ep->driver_data = NULL; |
| 1404 | if (agdev->out_ep) |
| 1405 | agdev->out_ep->driver_data = NULL; |
| 1406 | kfree(agdev); |
| 1407 | } |
| 1408 | |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1409 | static int audio_bind_config(struct usb_configuration *cfg) |
| 1410 | { |
Andrzej Pietrasiewicz | 5d73abf | 2014-07-22 19:58:29 +0200 | [diff] [blame] | 1411 | struct audio_dev *agdev; |
Sebastian Andrzej Siewior | 1616e99 | 2012-10-22 22:15:10 +0200 | [diff] [blame] | 1412 | int res; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1413 | |
Andrzej Pietrasiewicz | 5d73abf | 2014-07-22 19:58:29 +0200 | [diff] [blame] | 1414 | agdev = kzalloc(sizeof(*agdev), GFP_KERNEL); |
| 1415 | if (agdev == NULL) |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1416 | return -ENOMEM; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1417 | |
Andrzej Pietrasiewicz | 5d73abf | 2014-07-22 19:58:29 +0200 | [diff] [blame] | 1418 | agdev->func.name = "uac2_func"; |
| 1419 | agdev->func.strings = fn_strings; |
| 1420 | agdev->func.bind = afunc_bind; |
Andrzej Pietrasiewicz | f8f93d2 | 2014-07-22 19:58:30 +0200 | [diff] [blame^] | 1421 | agdev->func.unbind = old_afunc_unbind; |
Andrzej Pietrasiewicz | 5d73abf | 2014-07-22 19:58:29 +0200 | [diff] [blame] | 1422 | agdev->func.set_alt = afunc_set_alt; |
| 1423 | agdev->func.get_alt = afunc_get_alt; |
| 1424 | agdev->func.disable = afunc_disable; |
| 1425 | agdev->func.setup = afunc_setup; |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1426 | |
| 1427 | /* Initialize the configurable parameters */ |
| 1428 | usb_out_it_desc.bNrChannels = num_channels(c_chmask); |
| 1429 | usb_out_it_desc.bmChannelConfig = cpu_to_le32(c_chmask); |
| 1430 | io_in_it_desc.bNrChannels = num_channels(p_chmask); |
| 1431 | io_in_it_desc.bmChannelConfig = cpu_to_le32(p_chmask); |
| 1432 | as_out_hdr_desc.bNrChannels = num_channels(c_chmask); |
| 1433 | as_out_hdr_desc.bmChannelConfig = cpu_to_le32(c_chmask); |
| 1434 | as_in_hdr_desc.bNrChannels = num_channels(p_chmask); |
| 1435 | as_in_hdr_desc.bmChannelConfig = cpu_to_le32(p_chmask); |
| 1436 | as_out_fmt1_desc.bSubslotSize = c_ssize; |
| 1437 | as_out_fmt1_desc.bBitResolution = c_ssize * 8; |
| 1438 | as_in_fmt1_desc.bSubslotSize = p_ssize; |
| 1439 | as_in_fmt1_desc.bBitResolution = p_ssize * 8; |
| 1440 | |
| 1441 | snprintf(clksrc_in, sizeof(clksrc_in), "%uHz", p_srate); |
| 1442 | snprintf(clksrc_out, sizeof(clksrc_out), "%uHz", c_srate); |
| 1443 | |
Andrzej Pietrasiewicz | 5d73abf | 2014-07-22 19:58:29 +0200 | [diff] [blame] | 1444 | res = usb_add_function(cfg, &agdev->func); |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1445 | if (res < 0) |
Andrzej Pietrasiewicz | 5d73abf | 2014-07-22 19:58:29 +0200 | [diff] [blame] | 1446 | kfree(agdev); |
Jassi Brar | 132fcb4 | 2012-02-02 22:01:34 +0530 | [diff] [blame] | 1447 | |
| 1448 | return res; |
| 1449 | } |
Andrzej Pietrasiewicz | f8f93d2 | 2014-07-22 19:58:30 +0200 | [diff] [blame^] | 1450 | |
| 1451 | #else |
| 1452 | |
| 1453 | static void afunc_free_inst(struct usb_function_instance *f) |
| 1454 | { |
| 1455 | struct f_uac2_opts *opts; |
| 1456 | |
| 1457 | opts = container_of(f, struct f_uac2_opts, func_inst); |
| 1458 | kfree(opts); |
| 1459 | } |
| 1460 | |
| 1461 | static struct usb_function_instance *afunc_alloc_inst(void) |
| 1462 | { |
| 1463 | struct f_uac2_opts *opts; |
| 1464 | |
| 1465 | opts = kzalloc(sizeof(*opts), GFP_KERNEL); |
| 1466 | if (!opts) |
| 1467 | return ERR_PTR(-ENOMEM); |
| 1468 | |
| 1469 | opts->func_inst.free_func_inst = afunc_free_inst; |
| 1470 | |
| 1471 | return &opts->func_inst; |
| 1472 | } |
| 1473 | |
| 1474 | static void afunc_free(struct usb_function *f) |
| 1475 | { |
| 1476 | struct audio_dev *agdev; |
| 1477 | |
| 1478 | agdev = func_to_agdev(f); |
| 1479 | kfree(agdev); |
| 1480 | } |
| 1481 | |
| 1482 | static void afunc_unbind(struct usb_configuration *c, struct usb_function *f) |
| 1483 | { |
| 1484 | struct audio_dev *agdev = func_to_agdev(f); |
| 1485 | struct uac2_rtd_params *prm; |
| 1486 | |
| 1487 | alsa_uac2_exit(agdev); |
| 1488 | |
| 1489 | prm = &agdev->uac2.p_prm; |
| 1490 | kfree(prm->rbuf); |
| 1491 | |
| 1492 | prm = &agdev->uac2.c_prm; |
| 1493 | kfree(prm->rbuf); |
| 1494 | usb_free_all_descriptors(f); |
| 1495 | |
| 1496 | if (agdev->in_ep) |
| 1497 | agdev->in_ep->driver_data = NULL; |
| 1498 | if (agdev->out_ep) |
| 1499 | agdev->out_ep->driver_data = NULL; |
| 1500 | } |
| 1501 | |
| 1502 | struct usb_function *afunc_alloc(struct usb_function_instance *fi) |
| 1503 | { |
| 1504 | struct audio_dev *agdev; |
| 1505 | struct f_uac2_opts *opts; |
| 1506 | |
| 1507 | agdev = kzalloc(sizeof(*agdev), GFP_KERNEL); |
| 1508 | if (agdev == NULL) |
| 1509 | return ERR_PTR(-ENOMEM); |
| 1510 | |
| 1511 | opts = container_of(fi, struct f_uac2_opts, func_inst); |
| 1512 | |
| 1513 | agdev->func.name = "uac2_func"; |
| 1514 | agdev->func.strings = fn_strings; |
| 1515 | agdev->func.bind = afunc_bind; |
| 1516 | agdev->func.unbind = afunc_unbind; |
| 1517 | agdev->func.set_alt = afunc_set_alt; |
| 1518 | agdev->func.get_alt = afunc_get_alt; |
| 1519 | agdev->func.disable = afunc_disable; |
| 1520 | agdev->func.setup = afunc_setup; |
| 1521 | agdev->func.free_func = afunc_free; |
| 1522 | |
| 1523 | return &agdev->func; |
| 1524 | } |
| 1525 | |
| 1526 | DECLARE_USB_FUNCTION_INIT(uac2, afunc_alloc_inst, afunc_alloc); |
| 1527 | MODULE_LICENSE("GPL"); |
| 1528 | MODULE_AUTHOR("Yadwinder Singh"); |
| 1529 | MODULE_AUTHOR("Jaswinder Singh"); |
| 1530 | |
| 1531 | #endif |