2 * sst_mfld_platform.c - Intel MID Platform driver
4 * Copyright (C) 2010-2014 Intel Corp
5 * Author: Vinod Koul <vinod.koul@intel.com>
6 * Author: Harsha Priya <priya.harsha@intel.com>
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.
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.
18 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
20 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
22 #include <linux/slab.h>
24 #include <linux/module.h>
25 #include <sound/core.h>
26 #include <sound/pcm.h>
27 #include <sound/pcm_params.h>
28 #include <sound/soc.h>
29 #include <sound/compress_driver.h>
30 #include <asm/platform_sst_audio.h>
31 #include "sst-mfld-platform.h"
32 #include "sst-atom-controls.h"
34 struct sst_device *sst;
35 static DEFINE_MUTEX(sst_lock);
37 int sst_register_dsp(struct sst_device *dev)
41 if (!try_module_get(dev->dev->driver->owner))
43 mutex_lock(&sst_lock);
45 dev_err(dev->dev, "we already have a device %s\n", sst->name);
46 module_put(dev->dev->driver->owner);
47 mutex_unlock(&sst_lock);
50 dev_dbg(dev->dev, "registering device %s\n", dev->name);
52 mutex_unlock(&sst_lock);
55 EXPORT_SYMBOL_GPL(sst_register_dsp);
57 int sst_unregister_dsp(struct sst_device *dev)
64 mutex_lock(&sst_lock);
67 mutex_unlock(&sst_lock);
71 module_put(sst->dev->driver->owner);
72 dev_dbg(dev->dev, "unreg %s\n", sst->name);
74 mutex_unlock(&sst_lock);
77 EXPORT_SYMBOL_GPL(sst_unregister_dsp);
79 static struct snd_pcm_hardware sst_platform_pcm_hw = {
80 .info = (SNDRV_PCM_INFO_INTERLEAVED |
81 SNDRV_PCM_INFO_DOUBLE |
82 SNDRV_PCM_INFO_PAUSE |
83 SNDRV_PCM_INFO_RESUME |
85 SNDRV_PCM_INFO_MMAP_VALID |
86 SNDRV_PCM_INFO_BLOCK_TRANSFER |
87 SNDRV_PCM_INFO_SYNC_START),
88 .buffer_bytes_max = SST_MAX_BUFFER,
89 .period_bytes_min = SST_MIN_PERIOD_BYTES,
90 .period_bytes_max = SST_MAX_PERIOD_BYTES,
91 .periods_min = SST_MIN_PERIODS,
92 .periods_max = SST_MAX_PERIODS,
93 .fifo_size = SST_FIFO_SIZE,
96 static struct sst_dev_stream_map dpcm_strm_map[] = {
97 {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}, /* Reserved, not in use */
98 {MERR_DPCM_AUDIO, 0, SNDRV_PCM_STREAM_PLAYBACK, PIPE_MEDIA1_IN, SST_TASK_ID_MEDIA, 0},
99 {MERR_DPCM_COMPR, 0, SNDRV_PCM_STREAM_PLAYBACK, PIPE_MEDIA0_IN, SST_TASK_ID_MEDIA, 0},
100 {MERR_DPCM_AUDIO, 0, SNDRV_PCM_STREAM_CAPTURE, PIPE_PCM1_OUT, SST_TASK_ID_MEDIA, 0},
103 static int sst_media_digital_mute(struct snd_soc_dai *dai, int mute, int stream)
106 return sst_send_pipe_gains(dai, stream, mute);
109 /* helper functions */
110 void sst_set_stream_status(struct sst_runtime_stream *stream,
114 spin_lock_irqsave(&stream->status_lock, flags);
115 stream->stream_status = state;
116 spin_unlock_irqrestore(&stream->status_lock, flags);
119 static inline int sst_get_stream_status(struct sst_runtime_stream *stream)
124 spin_lock_irqsave(&stream->status_lock, flags);
125 state = stream->stream_status;
126 spin_unlock_irqrestore(&stream->status_lock, flags);
130 static void sst_fill_alloc_params(struct snd_pcm_substream *substream,
131 struct snd_sst_alloc_params_ext *alloc_param)
133 unsigned int channels;
134 snd_pcm_uframes_t period_size;
136 ssize_t buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
137 u32 buffer_addr = virt_to_phys(substream->dma_buffer.area);
139 channels = substream->runtime->channels;
140 period_size = substream->runtime->period_size;
141 periodbytes = samples_to_bytes(substream->runtime, period_size);
142 alloc_param->ring_buf_info[0].addr = buffer_addr;
143 alloc_param->ring_buf_info[0].size = buffer_bytes;
144 alloc_param->sg_count = 1;
145 alloc_param->reserved = 0;
146 alloc_param->frag_size = periodbytes * channels;
149 static void sst_fill_pcm_params(struct snd_pcm_substream *substream,
150 struct snd_sst_stream_params *param)
152 param->uc.pcm_params.num_chan = (u8) substream->runtime->channels;
153 param->uc.pcm_params.pcm_wd_sz = substream->runtime->sample_bits;
154 param->uc.pcm_params.sfreq = substream->runtime->rate;
156 /* PCM stream via ALSA interface */
157 param->uc.pcm_params.use_offload_path = 0;
158 param->uc.pcm_params.reserved2 = 0;
159 memset(param->uc.pcm_params.channel_map, 0, sizeof(u8));
163 static int sst_get_stream_mapping(int dev, int sdev, int dir,
164 struct sst_dev_stream_map *map, int size)
172 /* index 0 is not used in stream map */
173 for (i = 1; i < size; i++) {
174 if ((map[i].dev_num == dev) && (map[i].direction == dir))
180 int sst_fill_stream_params(void *substream,
181 const struct sst_data *ctx, struct snd_sst_params *str_params, bool is_compress)
185 struct sst_dev_stream_map *map;
186 struct snd_pcm_substream *pstream = NULL;
187 struct snd_compr_stream *cstream = NULL;
189 map = ctx->pdata->pdev_strm_map;
190 map_size = ctx->pdata->strm_map_size;
192 if (is_compress == true)
193 cstream = (struct snd_compr_stream *)substream;
195 pstream = (struct snd_pcm_substream *)substream;
197 str_params->stream_type = SST_STREAM_TYPE_MUSIC;
199 /* For pcm streams */
201 index = sst_get_stream_mapping(pstream->pcm->device,
202 pstream->number, pstream->stream,
207 str_params->stream_id = index;
208 str_params->device_type = map[index].device_id;
209 str_params->task = map[index].task_id;
211 str_params->ops = (u8)pstream->stream;
215 index = sst_get_stream_mapping(cstream->device->device,
216 0, cstream->direction,
220 str_params->stream_id = index;
221 str_params->device_type = map[index].device_id;
222 str_params->task = map[index].task_id;
224 str_params->ops = (u8)cstream->direction;
229 static int sst_platform_alloc_stream(struct snd_pcm_substream *substream,
230 struct snd_soc_dai *dai)
232 struct sst_runtime_stream *stream =
233 substream->runtime->private_data;
234 struct snd_sst_stream_params param = {{{0,},},};
235 struct snd_sst_params str_params = {0};
236 struct snd_sst_alloc_params_ext alloc_params = {0};
238 struct sst_data *ctx = snd_soc_dai_get_drvdata(dai);
240 /* set codec params and inform SST driver the same */
241 sst_fill_pcm_params(substream, ¶m);
242 sst_fill_alloc_params(substream, &alloc_params);
243 substream->runtime->dma_area = substream->dma_buffer.area;
244 str_params.sparams = param;
245 str_params.aparams = alloc_params;
246 str_params.codec = SST_CODEC_TYPE_PCM;
248 /* fill the device type and stream id to pass to SST driver */
249 ret_val = sst_fill_stream_params(substream, ctx, &str_params, false);
253 stream->stream_info.str_id = str_params.stream_id;
255 ret_val = stream->ops->open(sst->dev, &str_params);
263 static void sst_period_elapsed(void *arg)
265 struct snd_pcm_substream *substream = arg;
266 struct sst_runtime_stream *stream;
269 if (!substream || !substream->runtime)
271 stream = substream->runtime->private_data;
274 status = sst_get_stream_status(stream);
275 if (status != SST_PLATFORM_RUNNING)
277 snd_pcm_period_elapsed(substream);
280 static int sst_platform_init_stream(struct snd_pcm_substream *substream)
282 struct sst_runtime_stream *stream =
283 substream->runtime->private_data;
284 struct snd_soc_pcm_runtime *rtd = substream->private_data;
287 dev_dbg(rtd->dev, "setting buffer ptr param\n");
288 sst_set_stream_status(stream, SST_PLATFORM_INIT);
289 stream->stream_info.period_elapsed = sst_period_elapsed;
290 stream->stream_info.arg = substream;
291 stream->stream_info.buffer_ptr = 0;
292 stream->stream_info.sfreq = substream->runtime->rate;
293 ret_val = stream->ops->stream_init(sst->dev, &stream->stream_info);
295 dev_err(rtd->dev, "control_set ret error %d\n", ret_val);
300 static int power_up_sst(struct sst_runtime_stream *stream)
302 return stream->ops->power(sst->dev, true);
305 static void power_down_sst(struct sst_runtime_stream *stream)
307 stream->ops->power(sst->dev, false);
310 static int sst_media_open(struct snd_pcm_substream *substream,
311 struct snd_soc_dai *dai)
314 struct snd_pcm_runtime *runtime = substream->runtime;
315 struct sst_runtime_stream *stream;
317 stream = kzalloc(sizeof(*stream), GFP_KERNEL);
320 spin_lock_init(&stream->status_lock);
322 /* get the sst ops */
323 mutex_lock(&sst_lock);
325 !try_module_get(sst->dev->driver->owner)) {
326 dev_err(dai->dev, "no device available to run\n");
330 stream->ops = sst->ops;
331 mutex_unlock(&sst_lock);
333 stream->stream_info.str_id = 0;
335 stream->stream_info.arg = substream;
336 /* allocate memory for SST API set */
337 runtime->private_data = stream;
339 ret_val = power_up_sst(stream);
343 /* Make sure, that the period size is always even */
344 snd_pcm_hw_constraint_step(substream->runtime, 0,
345 SNDRV_PCM_HW_PARAM_PERIODS, 2);
347 return snd_pcm_hw_constraint_integer(runtime,
348 SNDRV_PCM_HW_PARAM_PERIODS);
351 mutex_unlock(&sst_lock);
355 static void sst_media_close(struct snd_pcm_substream *substream,
356 struct snd_soc_dai *dai)
358 struct sst_runtime_stream *stream;
359 int ret_val = 0, str_id;
361 stream = substream->runtime->private_data;
362 power_down_sst(stream);
364 str_id = stream->stream_info.str_id;
366 ret_val = stream->ops->close(sst->dev, str_id);
367 module_put(sst->dev->driver->owner);
371 static int sst_media_prepare(struct snd_pcm_substream *substream,
372 struct snd_soc_dai *dai)
374 struct sst_runtime_stream *stream;
375 int ret_val = 0, str_id;
377 stream = substream->runtime->private_data;
378 str_id = stream->stream_info.str_id;
379 if (stream->stream_info.str_id) {
380 ret_val = stream->ops->stream_drop(sst->dev, str_id);
384 ret_val = sst_platform_alloc_stream(substream, dai);
387 snprintf(substream->pcm->id, sizeof(substream->pcm->id),
388 "%d", stream->stream_info.str_id);
390 ret_val = sst_platform_init_stream(substream);
393 substream->runtime->hw.info = SNDRV_PCM_INFO_BLOCK_TRANSFER;
397 static int sst_media_hw_params(struct snd_pcm_substream *substream,
398 struct snd_pcm_hw_params *params,
399 struct snd_soc_dai *dai)
401 snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
402 memset(substream->runtime->dma_area, 0, params_buffer_bytes(params));
406 static int sst_media_hw_free(struct snd_pcm_substream *substream,
407 struct snd_soc_dai *dai)
409 return snd_pcm_lib_free_pages(substream);
412 static int sst_enable_ssp(struct snd_pcm_substream *substream,
413 struct snd_soc_dai *dai)
418 ret = sst_handle_vb_timer(dai, true);
419 sst_fill_ssp_defaults(dai);
424 static int sst_be_hw_params(struct snd_pcm_substream *substream,
425 struct snd_pcm_hw_params *params,
426 struct snd_soc_dai *dai)
430 if (dai->active == 1)
431 ret = send_ssp_cmd(dai, dai->name, 1);
435 static int sst_set_format(struct snd_soc_dai *dai, unsigned int fmt)
442 ret = sst_fill_ssp_config(dai, fmt);
444 dev_err(dai->dev, "sst_set_format failed..\n");
449 static int sst_platform_set_ssp_slot(struct snd_soc_dai *dai,
450 unsigned int tx_mask, unsigned int rx_mask,
451 int slots, int slot_width) {
457 ret = sst_fill_ssp_slot(dai, tx_mask, rx_mask, slots, slot_width);
459 dev_err(dai->dev, "sst_fill_ssp_slot failed..%d\n", ret);
464 static void sst_disable_ssp(struct snd_pcm_substream *substream,
465 struct snd_soc_dai *dai)
468 send_ssp_cmd(dai, dai->name, 0);
469 sst_handle_vb_timer(dai, false);
473 static struct snd_soc_dai_ops sst_media_dai_ops = {
474 .startup = sst_media_open,
475 .shutdown = sst_media_close,
476 .prepare = sst_media_prepare,
477 .hw_params = sst_media_hw_params,
478 .hw_free = sst_media_hw_free,
479 .mute_stream = sst_media_digital_mute,
482 static struct snd_soc_dai_ops sst_compr_dai_ops = {
483 .mute_stream = sst_media_digital_mute,
486 static struct snd_soc_dai_ops sst_be_dai_ops = {
487 .startup = sst_enable_ssp,
488 .hw_params = sst_be_hw_params,
489 .set_fmt = sst_set_format,
490 .set_tdm_slot = sst_platform_set_ssp_slot,
491 .shutdown = sst_disable_ssp,
494 static struct snd_soc_dai_driver sst_platform_dai[] = {
496 .name = "media-cpu-dai",
497 .ops = &sst_media_dai_ops,
499 .stream_name = "Headset Playback",
500 .channels_min = SST_STEREO,
501 .channels_max = SST_STEREO,
502 .rates = SNDRV_PCM_RATE_44100|SNDRV_PCM_RATE_48000,
503 .formats = SNDRV_PCM_FMTBIT_S16_LE,
506 .stream_name = "Headset Capture",
509 .rates = SNDRV_PCM_RATE_44100|SNDRV_PCM_RATE_48000,
510 .formats = SNDRV_PCM_FMTBIT_S16_LE,
514 .name = "compress-cpu-dai",
515 .compress_new = snd_soc_new_compress,
516 .ops = &sst_compr_dai_ops,
518 .stream_name = "Compress Playback",
519 .channels_min = SST_STEREO,
520 .channels_max = SST_STEREO,
521 .rates = SNDRV_PCM_RATE_48000,
522 .formats = SNDRV_PCM_FMTBIT_S16_LE,
528 .ops = &sst_be_dai_ops,
530 .stream_name = "ssp0 Tx",
531 .channels_min = SST_STEREO,
532 .channels_max = SST_STEREO,
533 .rates = SNDRV_PCM_RATE_48000,
534 .formats = SNDRV_PCM_FMTBIT_S16_LE,
537 .stream_name = "ssp0 Rx",
538 .channels_min = SST_STEREO,
539 .channels_max = SST_STEREO,
540 .rates = SNDRV_PCM_RATE_48000,
541 .formats = SNDRV_PCM_FMTBIT_S16_LE,
546 .ops = &sst_be_dai_ops,
548 .stream_name = "ssp1 Tx",
549 .channels_min = SST_STEREO,
550 .channels_max = SST_STEREO,
551 .rates = SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_48000,
552 .formats = SNDRV_PCM_FMTBIT_S16_LE,
555 .stream_name = "ssp1 Rx",
556 .channels_min = SST_STEREO,
557 .channels_max = SST_STEREO,
558 .rates = SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_48000,
559 .formats = SNDRV_PCM_FMTBIT_S16_LE,
564 .ops = &sst_be_dai_ops,
566 .stream_name = "ssp2 Tx",
567 .channels_min = SST_STEREO,
568 .channels_max = SST_STEREO,
569 .rates = SNDRV_PCM_RATE_48000,
570 .formats = SNDRV_PCM_FMTBIT_S16_LE,
573 .stream_name = "ssp2 Rx",
574 .channels_min = SST_STEREO,
575 .channels_max = SST_STEREO,
576 .rates = SNDRV_PCM_RATE_48000,
577 .formats = SNDRV_PCM_FMTBIT_S16_LE,
582 static int sst_platform_open(struct snd_pcm_substream *substream)
584 struct snd_pcm_runtime *runtime;
586 if (substream->pcm->internal)
589 runtime = substream->runtime;
590 runtime->hw = sst_platform_pcm_hw;
594 static int sst_platform_pcm_trigger(struct snd_pcm_substream *substream,
597 int ret_val = 0, str_id;
598 struct sst_runtime_stream *stream;
600 struct snd_soc_pcm_runtime *rtd = substream->private_data;
602 dev_dbg(rtd->dev, "sst_platform_pcm_trigger called\n");
603 if (substream->pcm->internal)
605 stream = substream->runtime->private_data;
606 str_id = stream->stream_info.str_id;
608 case SNDRV_PCM_TRIGGER_START:
609 dev_dbg(rtd->dev, "sst: Trigger Start\n");
610 status = SST_PLATFORM_RUNNING;
611 stream->stream_info.arg = substream;
612 ret_val = stream->ops->stream_start(sst->dev, str_id);
614 case SNDRV_PCM_TRIGGER_STOP:
615 dev_dbg(rtd->dev, "sst: in stop\n");
616 status = SST_PLATFORM_DROPPED;
617 ret_val = stream->ops->stream_drop(sst->dev, str_id);
619 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
620 case SNDRV_PCM_TRIGGER_SUSPEND:
621 dev_dbg(rtd->dev, "sst: in pause\n");
622 status = SST_PLATFORM_PAUSED;
623 ret_val = stream->ops->stream_pause(sst->dev, str_id);
625 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
626 case SNDRV_PCM_TRIGGER_RESUME:
627 dev_dbg(rtd->dev, "sst: in pause release\n");
628 status = SST_PLATFORM_RUNNING;
629 ret_val = stream->ops->stream_pause_release(sst->dev, str_id);
636 sst_set_stream_status(stream, status);
642 static snd_pcm_uframes_t sst_platform_pcm_pointer
643 (struct snd_pcm_substream *substream)
645 struct sst_runtime_stream *stream;
647 struct pcm_stream_info *str_info;
648 struct snd_soc_pcm_runtime *rtd = substream->private_data;
650 stream = substream->runtime->private_data;
651 status = sst_get_stream_status(stream);
652 if (status == SST_PLATFORM_INIT)
654 str_info = &stream->stream_info;
655 ret_val = stream->ops->stream_read_tstamp(sst->dev, str_info);
657 dev_err(rtd->dev, "sst: error code = %d\n", ret_val);
660 substream->runtime->delay = str_info->pcm_delay;
661 return str_info->buffer_ptr;
664 static struct snd_pcm_ops sst_platform_ops = {
665 .open = sst_platform_open,
666 .ioctl = snd_pcm_lib_ioctl,
667 .trigger = sst_platform_pcm_trigger,
668 .pointer = sst_platform_pcm_pointer,
671 static int sst_pcm_new(struct snd_soc_pcm_runtime *rtd)
673 struct snd_soc_dai *dai = rtd->cpu_dai;
674 struct snd_pcm *pcm = rtd->pcm;
677 if (dai->driver->playback.channels_min ||
678 dai->driver->capture.channels_min) {
679 retval = snd_pcm_lib_preallocate_pages_for_all(pcm,
680 SNDRV_DMA_TYPE_CONTINUOUS,
681 snd_dma_continuous_data(GFP_DMA),
682 SST_MIN_BUFFER, SST_MAX_BUFFER);
684 dev_err(rtd->dev, "dma buffer allocationf fail\n");
691 static int sst_soc_probe(struct snd_soc_platform *platform)
693 struct sst_data *drv = dev_get_drvdata(platform->dev);
695 drv->soc_card = platform->component.card;
696 return sst_dsp_init_v2_dpcm(platform);
699 static struct snd_soc_platform_driver sst_soc_platform_drv = {
700 .probe = sst_soc_probe,
701 .ops = &sst_platform_ops,
702 .compr_ops = &sst_platform_compr_ops,
703 .pcm_new = sst_pcm_new,
706 static const struct snd_soc_component_driver sst_component = {
711 static int sst_platform_probe(struct platform_device *pdev)
713 struct sst_data *drv;
715 struct sst_platform_data *pdata;
717 drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
722 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
727 pdata->pdev_strm_map = dpcm_strm_map;
728 pdata->strm_map_size = ARRAY_SIZE(dpcm_strm_map);
731 mutex_init(&drv->lock);
732 dev_set_drvdata(&pdev->dev, drv);
734 ret = snd_soc_register_platform(&pdev->dev, &sst_soc_platform_drv);
736 dev_err(&pdev->dev, "registering soc platform failed\n");
740 ret = snd_soc_register_component(&pdev->dev, &sst_component,
741 sst_platform_dai, ARRAY_SIZE(sst_platform_dai));
743 dev_err(&pdev->dev, "registering cpu dais failed\n");
744 snd_soc_unregister_platform(&pdev->dev);
749 static int sst_platform_remove(struct platform_device *pdev)
752 snd_soc_unregister_component(&pdev->dev);
753 snd_soc_unregister_platform(&pdev->dev);
754 dev_dbg(&pdev->dev, "sst_platform_remove success\n");
758 #ifdef CONFIG_PM_SLEEP
760 static int sst_soc_prepare(struct device *dev)
762 struct sst_data *drv = dev_get_drvdata(dev);
763 struct snd_soc_pcm_runtime *rtd;
765 /* suspend all pcms first */
766 snd_soc_suspend(drv->soc_card->dev);
767 snd_soc_poweroff(drv->soc_card->dev);
769 /* set the SSPs to idle */
770 list_for_each_entry(rtd, &drv->soc_card->rtd_list, list) {
771 struct snd_soc_dai *dai = rtd->cpu_dai;
774 send_ssp_cmd(dai, dai->name, 0);
775 sst_handle_vb_timer(dai, false);
782 static void sst_soc_complete(struct device *dev)
784 struct sst_data *drv = dev_get_drvdata(dev);
785 struct snd_soc_pcm_runtime *rtd;
788 list_for_each_entry(rtd, &drv->soc_card->rtd_list, list) {
789 struct snd_soc_dai *dai = rtd->cpu_dai;
792 sst_handle_vb_timer(dai, true);
793 send_ssp_cmd(dai, dai->name, 1);
796 snd_soc_resume(drv->soc_card->dev);
801 #define sst_soc_prepare NULL
802 #define sst_soc_complete NULL
807 static const struct dev_pm_ops sst_platform_pm = {
808 .prepare = sst_soc_prepare,
809 .complete = sst_soc_complete,
812 static struct platform_driver sst_platform_driver = {
814 .name = "sst-mfld-platform",
815 .pm = &sst_platform_pm,
817 .probe = sst_platform_probe,
818 .remove = sst_platform_remove,
821 module_platform_driver(sst_platform_driver);
823 MODULE_DESCRIPTION("ASoC Intel(R) MID Platform driver");
824 MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
825 MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");
826 MODULE_LICENSE("GPL v2");
827 MODULE_ALIAS("platform:sst-mfld-platform");