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d927fdae VK |
1 | /* |
2 | * sst_platform.c - Intel MID Platform driver | |
3 | * | |
4 | * Copyright (C) 2010 Intel Corp | |
5 | * Author: Vinod Koul <vinod.koul@intel.com> | |
6 | * Author: Harsha Priya <priya.harsha@intel.com> | |
7 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; version 2 of the License. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License along | |
19 | * with this program; if not, write to the Free Software Foundation, Inc., | |
20 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
21 | * | |
22 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
23 | * | |
24 | * | |
25 | */ | |
26 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
27 | ||
28 | #include <linux/slab.h> | |
29 | #include <linux/io.h> | |
da155d5b | 30 | #include <linux/module.h> |
d927fdae VK |
31 | #include <sound/core.h> |
32 | #include <sound/pcm.h> | |
33 | #include <sound/pcm_params.h> | |
34 | #include <sound/soc.h> | |
d927fdae VK |
35 | #include "sst_platform.h" |
36 | ||
03c33042 VK |
37 | static struct sst_device *sst; |
38 | static DEFINE_MUTEX(sst_lock); | |
39 | ||
40 | int sst_register_dsp(struct sst_device *dev) | |
41 | { | |
42 | BUG_ON(!dev); | |
43 | if (!try_module_get(dev->dev->driver->owner)) | |
44 | return -ENODEV; | |
45 | mutex_lock(&sst_lock); | |
46 | if (sst) { | |
47 | pr_err("we already have a device %s\n", sst->name); | |
48 | module_put(dev->dev->driver->owner); | |
49 | mutex_unlock(&sst_lock); | |
50 | return -EEXIST; | |
51 | } | |
52 | pr_debug("registering device %s\n", dev->name); | |
53 | sst = dev; | |
54 | mutex_unlock(&sst_lock); | |
55 | return 0; | |
56 | } | |
57 | EXPORT_SYMBOL_GPL(sst_register_dsp); | |
58 | ||
59 | int sst_unregister_dsp(struct sst_device *dev) | |
60 | { | |
61 | BUG_ON(!dev); | |
62 | if (dev != sst) | |
63 | return -EINVAL; | |
64 | ||
65 | mutex_lock(&sst_lock); | |
66 | ||
67 | if (!sst) { | |
68 | mutex_unlock(&sst_lock); | |
69 | return -EIO; | |
70 | } | |
71 | ||
72 | module_put(sst->dev->driver->owner); | |
73 | pr_debug("unreg %s\n", sst->name); | |
74 | sst = NULL; | |
75 | mutex_unlock(&sst_lock); | |
76 | return 0; | |
77 | } | |
78 | EXPORT_SYMBOL_GPL(sst_unregister_dsp); | |
79 | ||
d927fdae VK |
80 | static struct snd_pcm_hardware sst_platform_pcm_hw = { |
81 | .info = (SNDRV_PCM_INFO_INTERLEAVED | | |
82 | SNDRV_PCM_INFO_DOUBLE | | |
83 | SNDRV_PCM_INFO_PAUSE | | |
84 | SNDRV_PCM_INFO_RESUME | | |
85 | SNDRV_PCM_INFO_MMAP| | |
86 | SNDRV_PCM_INFO_MMAP_VALID | | |
87 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
88 | SNDRV_PCM_INFO_SYNC_START), | |
89 | .formats = (SNDRV_PCM_FMTBIT_S16 | SNDRV_PCM_FMTBIT_U16 | | |
90 | SNDRV_PCM_FMTBIT_S24 | SNDRV_PCM_FMTBIT_U24 | | |
91 | SNDRV_PCM_FMTBIT_S32 | SNDRV_PCM_FMTBIT_U32), | |
92 | .rates = (SNDRV_PCM_RATE_8000| | |
93 | SNDRV_PCM_RATE_44100 | | |
94 | SNDRV_PCM_RATE_48000), | |
95 | .rate_min = SST_MIN_RATE, | |
96 | .rate_max = SST_MAX_RATE, | |
97 | .channels_min = SST_MIN_CHANNEL, | |
98 | .channels_max = SST_MAX_CHANNEL, | |
99 | .buffer_bytes_max = SST_MAX_BUFFER, | |
100 | .period_bytes_min = SST_MIN_PERIOD_BYTES, | |
101 | .period_bytes_max = SST_MAX_PERIOD_BYTES, | |
102 | .periods_min = SST_MIN_PERIODS, | |
103 | .periods_max = SST_MAX_PERIODS, | |
104 | .fifo_size = SST_FIFO_SIZE, | |
105 | }; | |
106 | ||
107 | /* MFLD - MSIC */ | |
d1b73287 | 108 | static struct snd_soc_dai_driver sst_platform_dai[] = { |
d927fdae VK |
109 | { |
110 | .name = "Headset-cpu-dai", | |
111 | .id = 0, | |
112 | .playback = { | |
113 | .channels_min = SST_STEREO, | |
114 | .channels_max = SST_STEREO, | |
115 | .rates = SNDRV_PCM_RATE_48000, | |
116 | .formats = SNDRV_PCM_FMTBIT_S24_LE, | |
117 | }, | |
a7bffdf7 HP |
118 | .capture = { |
119 | .channels_min = 1, | |
120 | .channels_max = 5, | |
121 | .rates = SNDRV_PCM_RATE_48000, | |
122 | .formats = SNDRV_PCM_FMTBIT_S24_LE, | |
123 | }, | |
d927fdae VK |
124 | }, |
125 | { | |
126 | .name = "Speaker-cpu-dai", | |
127 | .id = 1, | |
128 | .playback = { | |
129 | .channels_min = SST_MONO, | |
130 | .channels_max = SST_STEREO, | |
131 | .rates = SNDRV_PCM_RATE_48000, | |
132 | .formats = SNDRV_PCM_FMTBIT_S24_LE, | |
133 | }, | |
134 | }, | |
135 | { | |
136 | .name = "Vibra1-cpu-dai", | |
137 | .id = 2, | |
138 | .playback = { | |
139 | .channels_min = SST_MONO, | |
140 | .channels_max = SST_MONO, | |
141 | .rates = SNDRV_PCM_RATE_48000, | |
142 | .formats = SNDRV_PCM_FMTBIT_S24_LE, | |
143 | }, | |
144 | }, | |
145 | { | |
146 | .name = "Vibra2-cpu-dai", | |
147 | .id = 3, | |
148 | .playback = { | |
149 | .channels_min = SST_MONO, | |
150 | .channels_max = SST_STEREO, | |
151 | .rates = SNDRV_PCM_RATE_48000, | |
152 | .formats = SNDRV_PCM_FMTBIT_S24_LE, | |
153 | }, | |
154 | }, | |
155 | }; | |
5c68536f | 156 | |
d927fdae | 157 | /* helper functions */ |
5c68536f HP |
158 | static inline void sst_set_stream_status(struct sst_runtime_stream *stream, |
159 | int state) | |
160 | { | |
d89b0a13 LG |
161 | unsigned long flags; |
162 | spin_lock_irqsave(&stream->status_lock, flags); | |
5c68536f | 163 | stream->stream_status = state; |
d89b0a13 | 164 | spin_unlock_irqrestore(&stream->status_lock, flags); |
5c68536f HP |
165 | } |
166 | ||
167 | static inline int sst_get_stream_status(struct sst_runtime_stream *stream) | |
168 | { | |
169 | int state; | |
d89b0a13 | 170 | unsigned long flags; |
5c68536f | 171 | |
d89b0a13 | 172 | spin_lock_irqsave(&stream->status_lock, flags); |
5c68536f | 173 | state = stream->stream_status; |
d89b0a13 | 174 | spin_unlock_irqrestore(&stream->status_lock, flags); |
5c68536f HP |
175 | return state; |
176 | } | |
177 | ||
178 | static void sst_fill_pcm_params(struct snd_pcm_substream *substream, | |
03c33042 | 179 | struct sst_pcm_params *param) |
5c68536f HP |
180 | { |
181 | ||
03c33042 VK |
182 | param->codec = SST_CODEC_TYPE_PCM; |
183 | param->num_chan = (u8) substream->runtime->channels; | |
184 | param->pcm_wd_sz = substream->runtime->sample_bits; | |
185 | param->reserved = 0; | |
186 | param->sfreq = substream->runtime->rate; | |
187 | param->ring_buffer_size = snd_pcm_lib_buffer_bytes(substream); | |
188 | param->period_count = substream->runtime->period_size; | |
189 | param->ring_buffer_addr = virt_to_phys(substream->dma_buffer.area); | |
190 | pr_debug("period_cnt = %d\n", param->period_count); | |
191 | pr_debug("sfreq= %d, wd_sz = %d\n", param->sfreq, param->pcm_wd_sz); | |
5c68536f HP |
192 | } |
193 | ||
d927fdae VK |
194 | static int sst_platform_alloc_stream(struct snd_pcm_substream *substream) |
195 | { | |
196 | struct sst_runtime_stream *stream = | |
197 | substream->runtime->private_data; | |
03c33042 VK |
198 | struct sst_pcm_params param = {0}; |
199 | struct sst_stream_params str_params = {0}; | |
d927fdae VK |
200 | int ret_val; |
201 | ||
202 | /* set codec params and inform SST driver the same */ | |
5c68536f | 203 | sst_fill_pcm_params(substream, ¶m); |
d927fdae | 204 | substream->runtime->dma_area = substream->dma_buffer.area; |
d927fdae | 205 | str_params.sparams = param; |
03c33042 | 206 | str_params.codec = param.codec; |
d927fdae VK |
207 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
208 | str_params.ops = STREAM_OPS_PLAYBACK; | |
209 | str_params.device_type = substream->pcm->device + 1; | |
210 | pr_debug("Playbck stream,Device %d\n", | |
211 | substream->pcm->device); | |
212 | } else { | |
213 | str_params.ops = STREAM_OPS_CAPTURE; | |
214 | str_params.device_type = SND_SST_DEVICE_CAPTURE; | |
215 | pr_debug("Capture stream,Device %d\n", | |
216 | substream->pcm->device); | |
217 | } | |
03c33042 | 218 | ret_val = stream->ops->open(&str_params); |
d927fdae VK |
219 | pr_debug("SST_SND_PLAY/CAPTURE ret_val = %x\n", ret_val); |
220 | if (ret_val < 0) | |
221 | return ret_val; | |
222 | ||
223 | stream->stream_info.str_id = ret_val; | |
224 | pr_debug("str id : %d\n", stream->stream_info.str_id); | |
d927fdae VK |
225 | return ret_val; |
226 | } | |
227 | ||
d927fdae VK |
228 | static void sst_period_elapsed(void *mad_substream) |
229 | { | |
230 | struct snd_pcm_substream *substream = mad_substream; | |
231 | struct sst_runtime_stream *stream; | |
5c68536f | 232 | int status; |
d927fdae VK |
233 | |
234 | if (!substream || !substream->runtime) | |
235 | return; | |
236 | stream = substream->runtime->private_data; | |
237 | if (!stream) | |
238 | return; | |
5c68536f HP |
239 | status = sst_get_stream_status(stream); |
240 | if (status != SST_PLATFORM_RUNNING) | |
d927fdae | 241 | return; |
d927fdae | 242 | snd_pcm_period_elapsed(substream); |
d927fdae VK |
243 | } |
244 | ||
245 | static int sst_platform_init_stream(struct snd_pcm_substream *substream) | |
246 | { | |
247 | struct sst_runtime_stream *stream = | |
248 | substream->runtime->private_data; | |
249 | int ret_val; | |
250 | ||
251 | pr_debug("setting buffer ptr param\n"); | |
5c68536f | 252 | sst_set_stream_status(stream, SST_PLATFORM_INIT); |
d927fdae VK |
253 | stream->stream_info.period_elapsed = sst_period_elapsed; |
254 | stream->stream_info.mad_substream = substream; | |
255 | stream->stream_info.buffer_ptr = 0; | |
256 | stream->stream_info.sfreq = substream->runtime->rate; | |
03c33042 | 257 | ret_val = stream->ops->device_control( |
a211701e | 258 | SST_SND_STREAM_INIT, &stream->stream_info); |
d927fdae VK |
259 | if (ret_val) |
260 | pr_err("control_set ret error %d\n", ret_val); | |
261 | return ret_val; | |
262 | ||
263 | } | |
264 | /* end -- helper functions */ | |
265 | ||
266 | static int sst_platform_open(struct snd_pcm_substream *substream) | |
267 | { | |
22be504a | 268 | struct snd_pcm_runtime *runtime = substream->runtime; |
d927fdae | 269 | struct sst_runtime_stream *stream; |
c45471ea | 270 | int ret_val; |
d927fdae VK |
271 | |
272 | pr_debug("sst_platform_open called\n"); | |
22be504a LG |
273 | |
274 | snd_soc_set_runtime_hwparams(substream, &sst_platform_pcm_hw); | |
283e42e0 LG |
275 | ret_val = snd_pcm_hw_constraint_integer(runtime, |
276 | SNDRV_PCM_HW_PARAM_PERIODS); | |
277 | if (ret_val < 0) | |
278 | return ret_val; | |
22be504a | 279 | |
d927fdae VK |
280 | stream = kzalloc(sizeof(*stream), GFP_KERNEL); |
281 | if (!stream) | |
282 | return -ENOMEM; | |
d927fdae | 283 | spin_lock_init(&stream->status_lock); |
03c33042 VK |
284 | |
285 | /* get the sst ops */ | |
286 | mutex_lock(&sst_lock); | |
287 | if (!sst) { | |
288 | pr_err("no device available to run\n"); | |
289 | mutex_unlock(&sst_lock); | |
d927fdae | 290 | kfree(stream); |
03c33042 | 291 | return -ENODEV; |
d927fdae | 292 | } |
03c33042 VK |
293 | if (!try_module_get(sst->dev->driver->owner)) { |
294 | mutex_unlock(&sst_lock); | |
83a3fd3c | 295 | kfree(stream); |
03c33042 | 296 | return -ENODEV; |
d927fdae | 297 | } |
03c33042 VK |
298 | stream->ops = sst->ops; |
299 | mutex_unlock(&sst_lock); | |
300 | ||
301 | stream->stream_info.str_id = 0; | |
302 | sst_set_stream_status(stream, SST_PLATFORM_INIT); | |
303 | stream->stream_info.mad_substream = substream; | |
304 | /* allocate memory for SST API set */ | |
d927fdae | 305 | runtime->private_data = stream; |
283e42e0 LG |
306 | |
307 | return 0; | |
d927fdae VK |
308 | } |
309 | ||
310 | static int sst_platform_close(struct snd_pcm_substream *substream) | |
311 | { | |
312 | struct sst_runtime_stream *stream; | |
313 | int ret_val = 0, str_id; | |
314 | ||
315 | pr_debug("sst_platform_close called\n"); | |
d927fdae VK |
316 | stream = substream->runtime->private_data; |
317 | str_id = stream->stream_info.str_id; | |
d927fdae | 318 | if (str_id) |
03c33042 VK |
319 | ret_val = stream->ops->close(str_id); |
320 | module_put(sst->dev->driver->owner); | |
d927fdae VK |
321 | kfree(stream); |
322 | return ret_val; | |
323 | } | |
324 | ||
325 | static int sst_platform_pcm_prepare(struct snd_pcm_substream *substream) | |
326 | { | |
327 | struct sst_runtime_stream *stream; | |
328 | int ret_val = 0, str_id; | |
329 | ||
330 | pr_debug("sst_platform_pcm_prepare called\n"); | |
d927fdae VK |
331 | stream = substream->runtime->private_data; |
332 | str_id = stream->stream_info.str_id; | |
333 | if (stream->stream_info.str_id) { | |
03c33042 VK |
334 | ret_val = stream->ops->device_control( |
335 | SST_SND_DROP, &str_id); | |
d927fdae VK |
336 | return ret_val; |
337 | } | |
338 | ||
339 | ret_val = sst_platform_alloc_stream(substream); | |
340 | if (ret_val < 0) | |
341 | return ret_val; | |
342 | snprintf(substream->pcm->id, sizeof(substream->pcm->id), | |
343 | "%d", stream->stream_info.str_id); | |
344 | ||
345 | ret_val = sst_platform_init_stream(substream); | |
346 | if (ret_val) | |
347 | return ret_val; | |
348 | substream->runtime->hw.info = SNDRV_PCM_INFO_BLOCK_TRANSFER; | |
349 | return ret_val; | |
350 | } | |
351 | ||
352 | static int sst_platform_pcm_trigger(struct snd_pcm_substream *substream, | |
353 | int cmd) | |
354 | { | |
355 | int ret_val = 0, str_id; | |
356 | struct sst_runtime_stream *stream; | |
a211701e | 357 | int str_cmd, status; |
d927fdae VK |
358 | |
359 | pr_debug("sst_platform_pcm_trigger called\n"); | |
d927fdae | 360 | stream = substream->runtime->private_data; |
d927fdae | 361 | str_id = stream->stream_info.str_id; |
d927fdae VK |
362 | switch (cmd) { |
363 | case SNDRV_PCM_TRIGGER_START: | |
364 | pr_debug("sst: Trigger Start\n"); | |
a211701e HP |
365 | str_cmd = SST_SND_START; |
366 | status = SST_PLATFORM_RUNNING; | |
d927fdae VK |
367 | stream->stream_info.mad_substream = substream; |
368 | break; | |
369 | case SNDRV_PCM_TRIGGER_STOP: | |
370 | pr_debug("sst: in stop\n"); | |
a211701e HP |
371 | str_cmd = SST_SND_DROP; |
372 | status = SST_PLATFORM_DROPPED; | |
d927fdae VK |
373 | break; |
374 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
375 | pr_debug("sst: in pause\n"); | |
a211701e HP |
376 | str_cmd = SST_SND_PAUSE; |
377 | status = SST_PLATFORM_PAUSED; | |
d927fdae VK |
378 | break; |
379 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
380 | pr_debug("sst: in pause release\n"); | |
a211701e HP |
381 | str_cmd = SST_SND_RESUME; |
382 | status = SST_PLATFORM_RUNNING; | |
d927fdae VK |
383 | break; |
384 | default: | |
a211701e | 385 | return -EINVAL; |
d927fdae | 386 | } |
03c33042 | 387 | ret_val = stream->ops->device_control(str_cmd, &str_id); |
a211701e HP |
388 | if (!ret_val) |
389 | sst_set_stream_status(stream, status); | |
390 | ||
d927fdae VK |
391 | return ret_val; |
392 | } | |
393 | ||
394 | ||
395 | static snd_pcm_uframes_t sst_platform_pcm_pointer | |
396 | (struct snd_pcm_substream *substream) | |
397 | { | |
398 | struct sst_runtime_stream *stream; | |
5c68536f | 399 | int ret_val, status; |
d927fdae VK |
400 | struct pcm_stream_info *str_info; |
401 | ||
d927fdae | 402 | stream = substream->runtime->private_data; |
5c68536f HP |
403 | status = sst_get_stream_status(stream); |
404 | if (status == SST_PLATFORM_INIT) | |
d927fdae | 405 | return 0; |
d927fdae | 406 | str_info = &stream->stream_info; |
03c33042 | 407 | ret_val = stream->ops->device_control( |
d927fdae VK |
408 | SST_SND_BUFFER_POINTER, str_info); |
409 | if (ret_val) { | |
410 | pr_err("sst: error code = %d\n", ret_val); | |
411 | return ret_val; | |
412 | } | |
d927fdae VK |
413 | return stream->stream_info.buffer_ptr; |
414 | } | |
415 | ||
5b499f8b VK |
416 | static int sst_platform_pcm_hw_params(struct snd_pcm_substream *substream, |
417 | struct snd_pcm_hw_params *params) | |
418 | { | |
419 | snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params)); | |
420 | memset(substream->runtime->dma_area, 0, params_buffer_bytes(params)); | |
421 | ||
422 | return 0; | |
423 | } | |
d927fdae | 424 | |
9ab88434 | 425 | static int sst_platform_pcm_hw_free(struct snd_pcm_substream *substream) |
426 | { | |
427 | return snd_pcm_lib_free_pages(substream); | |
428 | } | |
429 | ||
d927fdae VK |
430 | static struct snd_pcm_ops sst_platform_ops = { |
431 | .open = sst_platform_open, | |
432 | .close = sst_platform_close, | |
433 | .ioctl = snd_pcm_lib_ioctl, | |
434 | .prepare = sst_platform_pcm_prepare, | |
435 | .trigger = sst_platform_pcm_trigger, | |
436 | .pointer = sst_platform_pcm_pointer, | |
5b499f8b | 437 | .hw_params = sst_platform_pcm_hw_params, |
9ab88434 | 438 | .hw_free = sst_platform_pcm_hw_free, |
d927fdae VK |
439 | }; |
440 | ||
441 | static void sst_pcm_free(struct snd_pcm *pcm) | |
442 | { | |
443 | pr_debug("sst_pcm_free called\n"); | |
444 | snd_pcm_lib_preallocate_free_for_all(pcm); | |
445 | } | |
446 | ||
8faa8c1a | 447 | static int sst_pcm_new(struct snd_soc_pcm_runtime *rtd) |
d927fdae | 448 | { |
552d1ef6 | 449 | struct snd_pcm *pcm = rtd->pcm; |
d927fdae VK |
450 | int retval = 0; |
451 | ||
452 | pr_debug("sst_pcm_new called\n"); | |
25e9e756 JE |
453 | if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream || |
454 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) { | |
d927fdae VK |
455 | retval = snd_pcm_lib_preallocate_pages_for_all(pcm, |
456 | SNDRV_DMA_TYPE_CONTINUOUS, | |
457 | snd_dma_continuous_data(GFP_KERNEL), | |
458 | SST_MIN_BUFFER, SST_MAX_BUFFER); | |
459 | if (retval) { | |
460 | pr_err("dma buffer allocationf fail\n"); | |
461 | return retval; | |
462 | } | |
463 | } | |
d927fdae VK |
464 | return retval; |
465 | } | |
8faa8c1a | 466 | static struct snd_soc_platform_driver sst_soc_platform_drv = { |
d927fdae VK |
467 | .ops = &sst_platform_ops, |
468 | .pcm_new = sst_pcm_new, | |
469 | .pcm_free = sst_pcm_free, | |
470 | }; | |
471 | ||
472 | static int sst_platform_probe(struct platform_device *pdev) | |
473 | { | |
474 | int ret; | |
475 | ||
476 | pr_debug("sst_platform_probe called\n"); | |
03c33042 | 477 | sst = NULL; |
d927fdae VK |
478 | ret = snd_soc_register_platform(&pdev->dev, &sst_soc_platform_drv); |
479 | if (ret) { | |
480 | pr_err("registering soc platform failed\n"); | |
481 | return ret; | |
482 | } | |
5c68536f | 483 | |
d927fdae VK |
484 | ret = snd_soc_register_dais(&pdev->dev, |
485 | sst_platform_dai, ARRAY_SIZE(sst_platform_dai)); | |
486 | if (ret) { | |
487 | pr_err("registering cpu dais failed\n"); | |
488 | snd_soc_unregister_platform(&pdev->dev); | |
489 | } | |
490 | return ret; | |
491 | } | |
492 | ||
493 | static int sst_platform_remove(struct platform_device *pdev) | |
494 | { | |
495 | ||
496 | snd_soc_unregister_dais(&pdev->dev, ARRAY_SIZE(sst_platform_dai)); | |
d927fdae | 497 | snd_soc_unregister_platform(&pdev->dev); |
25985edc | 498 | pr_debug("sst_platform_remove success\n"); |
d927fdae VK |
499 | return 0; |
500 | } | |
501 | ||
502 | static struct platform_driver sst_platform_driver = { | |
503 | .driver = { | |
504 | .name = "sst-platform", | |
505 | .owner = THIS_MODULE, | |
506 | }, | |
507 | .probe = sst_platform_probe, | |
508 | .remove = sst_platform_remove, | |
509 | }; | |
510 | ||
29515d62 | 511 | module_platform_driver(sst_platform_driver); |
d927fdae VK |
512 | |
513 | MODULE_DESCRIPTION("ASoC Intel(R) MID Platform driver"); | |
514 | MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>"); | |
515 | MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>"); | |
516 | MODULE_LICENSE("GPL v2"); | |
f5c6b2aa | 517 | MODULE_ALIAS("platform:sst-platform"); |