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
);
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 for (i
= 0; i
< drv
->soc_card
->num_rtd
; i
++) {
771 struct snd_soc_dai
*dai
= drv
->soc_card
->rtd
[i
].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
);
788 for (i
= 0; i
< drv
->soc_card
->num_rtd
; i
++) {
789 struct snd_soc_dai
*dai
= drv
->soc_card
->rtd
[i
].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");