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},
101 {MERR_DPCM_DEEP_BUFFER
, 0, SNDRV_PCM_STREAM_PLAYBACK
, PIPE_MEDIA3_IN
, SST_TASK_ID_MEDIA
, 0},
104 static int sst_media_digital_mute(struct snd_soc_dai
*dai
, int mute
, int stream
)
107 return sst_send_pipe_gains(dai
, stream
, mute
);
110 /* helper functions */
111 void sst_set_stream_status(struct sst_runtime_stream
*stream
,
115 spin_lock_irqsave(&stream
->status_lock
, flags
);
116 stream
->stream_status
= state
;
117 spin_unlock_irqrestore(&stream
->status_lock
, flags
);
120 static inline int sst_get_stream_status(struct sst_runtime_stream
*stream
)
125 spin_lock_irqsave(&stream
->status_lock
, flags
);
126 state
= stream
->stream_status
;
127 spin_unlock_irqrestore(&stream
->status_lock
, flags
);
131 static void sst_fill_alloc_params(struct snd_pcm_substream
*substream
,
132 struct snd_sst_alloc_params_ext
*alloc_param
)
134 unsigned int channels
;
135 snd_pcm_uframes_t period_size
;
137 ssize_t buffer_bytes
= snd_pcm_lib_buffer_bytes(substream
);
138 u32 buffer_addr
= virt_to_phys(substream
->dma_buffer
.area
);
140 channels
= substream
->runtime
->channels
;
141 period_size
= substream
->runtime
->period_size
;
142 periodbytes
= samples_to_bytes(substream
->runtime
, period_size
);
143 alloc_param
->ring_buf_info
[0].addr
= buffer_addr
;
144 alloc_param
->ring_buf_info
[0].size
= buffer_bytes
;
145 alloc_param
->sg_count
= 1;
146 alloc_param
->reserved
= 0;
147 alloc_param
->frag_size
= periodbytes
* channels
;
150 static void sst_fill_pcm_params(struct snd_pcm_substream
*substream
,
151 struct snd_sst_stream_params
*param
)
153 param
->uc
.pcm_params
.num_chan
= (u8
) substream
->runtime
->channels
;
154 param
->uc
.pcm_params
.pcm_wd_sz
= substream
->runtime
->sample_bits
;
155 param
->uc
.pcm_params
.sfreq
= substream
->runtime
->rate
;
157 /* PCM stream via ALSA interface */
158 param
->uc
.pcm_params
.use_offload_path
= 0;
159 param
->uc
.pcm_params
.reserved2
= 0;
160 memset(param
->uc
.pcm_params
.channel_map
, 0, sizeof(u8
));
164 static int sst_get_stream_mapping(int dev
, int sdev
, int dir
,
165 struct sst_dev_stream_map
*map
, int size
)
173 /* index 0 is not used in stream map */
174 for (i
= 1; i
< size
; i
++) {
175 if ((map
[i
].dev_num
== dev
) && (map
[i
].direction
== dir
))
181 int sst_fill_stream_params(void *substream
,
182 const struct sst_data
*ctx
, struct snd_sst_params
*str_params
, bool is_compress
)
186 struct sst_dev_stream_map
*map
;
187 struct snd_pcm_substream
*pstream
= NULL
;
188 struct snd_compr_stream
*cstream
= NULL
;
190 map
= ctx
->pdata
->pdev_strm_map
;
191 map_size
= ctx
->pdata
->strm_map_size
;
193 if (is_compress
== true)
194 cstream
= (struct snd_compr_stream
*)substream
;
196 pstream
= (struct snd_pcm_substream
*)substream
;
198 str_params
->stream_type
= SST_STREAM_TYPE_MUSIC
;
200 /* For pcm streams */
202 index
= sst_get_stream_mapping(pstream
->pcm
->device
,
203 pstream
->number
, pstream
->stream
,
208 str_params
->stream_id
= index
;
209 str_params
->device_type
= map
[index
].device_id
;
210 str_params
->task
= map
[index
].task_id
;
212 str_params
->ops
= (u8
)pstream
->stream
;
216 index
= sst_get_stream_mapping(cstream
->device
->device
,
217 0, cstream
->direction
,
221 str_params
->stream_id
= index
;
222 str_params
->device_type
= map
[index
].device_id
;
223 str_params
->task
= map
[index
].task_id
;
225 str_params
->ops
= (u8
)cstream
->direction
;
230 static int sst_platform_alloc_stream(struct snd_pcm_substream
*substream
,
231 struct snd_soc_dai
*dai
)
233 struct sst_runtime_stream
*stream
=
234 substream
->runtime
->private_data
;
235 struct snd_sst_stream_params param
= {{{0,},},};
236 struct snd_sst_params str_params
= {0};
237 struct snd_sst_alloc_params_ext alloc_params
= {0};
239 struct sst_data
*ctx
= snd_soc_dai_get_drvdata(dai
);
241 /* set codec params and inform SST driver the same */
242 sst_fill_pcm_params(substream
, ¶m
);
243 sst_fill_alloc_params(substream
, &alloc_params
);
244 substream
->runtime
->dma_area
= substream
->dma_buffer
.area
;
245 str_params
.sparams
= param
;
246 str_params
.aparams
= alloc_params
;
247 str_params
.codec
= SST_CODEC_TYPE_PCM
;
249 /* fill the device type and stream id to pass to SST driver */
250 ret_val
= sst_fill_stream_params(substream
, ctx
, &str_params
, false);
254 stream
->stream_info
.str_id
= str_params
.stream_id
;
256 ret_val
= stream
->ops
->open(sst
->dev
, &str_params
);
264 static void sst_period_elapsed(void *arg
)
266 struct snd_pcm_substream
*substream
= arg
;
267 struct sst_runtime_stream
*stream
;
270 if (!substream
|| !substream
->runtime
)
272 stream
= substream
->runtime
->private_data
;
275 status
= sst_get_stream_status(stream
);
276 if (status
!= SST_PLATFORM_RUNNING
)
278 snd_pcm_period_elapsed(substream
);
281 static int sst_platform_init_stream(struct snd_pcm_substream
*substream
)
283 struct sst_runtime_stream
*stream
=
284 substream
->runtime
->private_data
;
285 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
288 dev_dbg(rtd
->dev
, "setting buffer ptr param\n");
289 sst_set_stream_status(stream
, SST_PLATFORM_INIT
);
290 stream
->stream_info
.period_elapsed
= sst_period_elapsed
;
291 stream
->stream_info
.arg
= substream
;
292 stream
->stream_info
.buffer_ptr
= 0;
293 stream
->stream_info
.sfreq
= substream
->runtime
->rate
;
294 ret_val
= stream
->ops
->stream_init(sst
->dev
, &stream
->stream_info
);
296 dev_err(rtd
->dev
, "control_set ret error %d\n", ret_val
);
301 static int power_up_sst(struct sst_runtime_stream
*stream
)
303 return stream
->ops
->power(sst
->dev
, true);
306 static void power_down_sst(struct sst_runtime_stream
*stream
)
308 stream
->ops
->power(sst
->dev
, false);
311 static int sst_media_open(struct snd_pcm_substream
*substream
,
312 struct snd_soc_dai
*dai
)
315 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
316 struct sst_runtime_stream
*stream
;
318 stream
= kzalloc(sizeof(*stream
), GFP_KERNEL
);
321 spin_lock_init(&stream
->status_lock
);
323 /* get the sst ops */
324 mutex_lock(&sst_lock
);
326 !try_module_get(sst
->dev
->driver
->owner
)) {
327 dev_err(dai
->dev
, "no device available to run\n");
331 stream
->ops
= sst
->ops
;
332 mutex_unlock(&sst_lock
);
334 stream
->stream_info
.str_id
= 0;
336 stream
->stream_info
.arg
= substream
;
337 /* allocate memory for SST API set */
338 runtime
->private_data
= stream
;
340 ret_val
= power_up_sst(stream
);
344 /* Make sure, that the period size is always even */
345 snd_pcm_hw_constraint_step(substream
->runtime
, 0,
346 SNDRV_PCM_HW_PARAM_PERIODS
, 2);
348 return snd_pcm_hw_constraint_integer(runtime
,
349 SNDRV_PCM_HW_PARAM_PERIODS
);
352 mutex_unlock(&sst_lock
);
356 static void sst_media_close(struct snd_pcm_substream
*substream
,
357 struct snd_soc_dai
*dai
)
359 struct sst_runtime_stream
*stream
;
360 int ret_val
= 0, str_id
;
362 stream
= substream
->runtime
->private_data
;
363 power_down_sst(stream
);
365 str_id
= stream
->stream_info
.str_id
;
367 ret_val
= stream
->ops
->close(sst
->dev
, str_id
);
368 module_put(sst
->dev
->driver
->owner
);
372 static int sst_media_prepare(struct snd_pcm_substream
*substream
,
373 struct snd_soc_dai
*dai
)
375 struct sst_runtime_stream
*stream
;
376 int ret_val
= 0, str_id
;
378 stream
= substream
->runtime
->private_data
;
379 str_id
= stream
->stream_info
.str_id
;
380 if (stream
->stream_info
.str_id
) {
381 ret_val
= stream
->ops
->stream_drop(sst
->dev
, str_id
);
385 ret_val
= sst_platform_alloc_stream(substream
, dai
);
388 snprintf(substream
->pcm
->id
, sizeof(substream
->pcm
->id
),
389 "%d", stream
->stream_info
.str_id
);
391 ret_val
= sst_platform_init_stream(substream
);
394 substream
->runtime
->hw
.info
= SNDRV_PCM_INFO_BLOCK_TRANSFER
;
398 static int sst_media_hw_params(struct snd_pcm_substream
*substream
,
399 struct snd_pcm_hw_params
*params
,
400 struct snd_soc_dai
*dai
)
402 snd_pcm_lib_malloc_pages(substream
, params_buffer_bytes(params
));
403 memset(substream
->runtime
->dma_area
, 0, params_buffer_bytes(params
));
407 static int sst_media_hw_free(struct snd_pcm_substream
*substream
,
408 struct snd_soc_dai
*dai
)
410 return snd_pcm_lib_free_pages(substream
);
413 static int sst_enable_ssp(struct snd_pcm_substream
*substream
,
414 struct snd_soc_dai
*dai
)
419 ret
= sst_handle_vb_timer(dai
, true);
420 sst_fill_ssp_defaults(dai
);
425 static int sst_be_hw_params(struct snd_pcm_substream
*substream
,
426 struct snd_pcm_hw_params
*params
,
427 struct snd_soc_dai
*dai
)
431 if (dai
->active
== 1)
432 ret
= send_ssp_cmd(dai
, dai
->name
, 1);
436 static int sst_set_format(struct snd_soc_dai
*dai
, unsigned int fmt
)
443 ret
= sst_fill_ssp_config(dai
, fmt
);
445 dev_err(dai
->dev
, "sst_set_format failed..\n");
450 static int sst_platform_set_ssp_slot(struct snd_soc_dai
*dai
,
451 unsigned int tx_mask
, unsigned int rx_mask
,
452 int slots
, int slot_width
) {
458 ret
= sst_fill_ssp_slot(dai
, tx_mask
, rx_mask
, slots
, slot_width
);
460 dev_err(dai
->dev
, "sst_fill_ssp_slot failed..%d\n", ret
);
465 static void sst_disable_ssp(struct snd_pcm_substream
*substream
,
466 struct snd_soc_dai
*dai
)
469 send_ssp_cmd(dai
, dai
->name
, 0);
470 sst_handle_vb_timer(dai
, false);
474 static struct snd_soc_dai_ops sst_media_dai_ops
= {
475 .startup
= sst_media_open
,
476 .shutdown
= sst_media_close
,
477 .prepare
= sst_media_prepare
,
478 .hw_params
= sst_media_hw_params
,
479 .hw_free
= sst_media_hw_free
,
480 .mute_stream
= sst_media_digital_mute
,
483 static struct snd_soc_dai_ops sst_compr_dai_ops
= {
484 .mute_stream
= sst_media_digital_mute
,
487 static struct snd_soc_dai_ops sst_be_dai_ops
= {
488 .startup
= sst_enable_ssp
,
489 .hw_params
= sst_be_hw_params
,
490 .set_fmt
= sst_set_format
,
491 .set_tdm_slot
= sst_platform_set_ssp_slot
,
492 .shutdown
= sst_disable_ssp
,
495 static struct snd_soc_dai_driver sst_platform_dai
[] = {
497 .name
= "media-cpu-dai",
498 .ops
= &sst_media_dai_ops
,
500 .stream_name
= "Headset Playback",
501 .channels_min
= SST_STEREO
,
502 .channels_max
= SST_STEREO
,
503 .rates
= SNDRV_PCM_RATE_44100
|SNDRV_PCM_RATE_48000
,
504 .formats
= SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S24_LE
,
507 .stream_name
= "Headset Capture",
510 .rates
= SNDRV_PCM_RATE_44100
|SNDRV_PCM_RATE_48000
,
511 .formats
= SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S24_LE
,
515 .name
= "deepbuffer-cpu-dai",
516 .ops
= &sst_media_dai_ops
,
518 .stream_name
= "Deepbuffer Playback",
519 .channels_min
= SST_STEREO
,
520 .channels_max
= SST_STEREO
,
521 .rates
= SNDRV_PCM_RATE_44100
|SNDRV_PCM_RATE_48000
,
522 .formats
= SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S24_LE
,
526 .name
= "compress-cpu-dai",
527 .compress_new
= snd_soc_new_compress
,
528 .ops
= &sst_compr_dai_ops
,
530 .stream_name
= "Compress Playback",
537 .ops
= &sst_be_dai_ops
,
539 .stream_name
= "ssp0 Tx",
540 .channels_min
= SST_STEREO
,
541 .channels_max
= SST_STEREO
,
542 .rates
= SNDRV_PCM_RATE_48000
,
543 .formats
= SNDRV_PCM_FMTBIT_S16_LE
,
546 .stream_name
= "ssp0 Rx",
547 .channels_min
= SST_STEREO
,
548 .channels_max
= SST_STEREO
,
549 .rates
= SNDRV_PCM_RATE_48000
,
550 .formats
= SNDRV_PCM_FMTBIT_S16_LE
,
555 .ops
= &sst_be_dai_ops
,
557 .stream_name
= "ssp1 Tx",
558 .channels_min
= SST_STEREO
,
559 .channels_max
= SST_STEREO
,
560 .rates
= SNDRV_PCM_RATE_8000
|SNDRV_PCM_RATE_16000
|SNDRV_PCM_RATE_48000
,
561 .formats
= SNDRV_PCM_FMTBIT_S16_LE
,
564 .stream_name
= "ssp1 Rx",
565 .channels_min
= SST_STEREO
,
566 .channels_max
= SST_STEREO
,
567 .rates
= SNDRV_PCM_RATE_8000
|SNDRV_PCM_RATE_16000
|SNDRV_PCM_RATE_48000
,
568 .formats
= SNDRV_PCM_FMTBIT_S16_LE
,
573 .ops
= &sst_be_dai_ops
,
575 .stream_name
= "ssp2 Tx",
576 .channels_min
= SST_STEREO
,
577 .channels_max
= SST_STEREO
,
578 .rates
= SNDRV_PCM_RATE_48000
,
579 .formats
= SNDRV_PCM_FMTBIT_S16_LE
,
582 .stream_name
= "ssp2 Rx",
583 .channels_min
= SST_STEREO
,
584 .channels_max
= SST_STEREO
,
585 .rates
= SNDRV_PCM_RATE_48000
,
586 .formats
= SNDRV_PCM_FMTBIT_S16_LE
,
591 static int sst_platform_open(struct snd_pcm_substream
*substream
)
593 struct snd_pcm_runtime
*runtime
;
595 if (substream
->pcm
->internal
)
598 runtime
= substream
->runtime
;
599 runtime
->hw
= sst_platform_pcm_hw
;
603 static int sst_platform_pcm_trigger(struct snd_pcm_substream
*substream
,
606 int ret_val
= 0, str_id
;
607 struct sst_runtime_stream
*stream
;
609 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
611 dev_dbg(rtd
->dev
, "sst_platform_pcm_trigger called\n");
612 if (substream
->pcm
->internal
)
614 stream
= substream
->runtime
->private_data
;
615 str_id
= stream
->stream_info
.str_id
;
617 case SNDRV_PCM_TRIGGER_START
:
618 dev_dbg(rtd
->dev
, "sst: Trigger Start\n");
619 status
= SST_PLATFORM_RUNNING
;
620 stream
->stream_info
.arg
= substream
;
621 ret_val
= stream
->ops
->stream_start(sst
->dev
, str_id
);
623 case SNDRV_PCM_TRIGGER_STOP
:
624 dev_dbg(rtd
->dev
, "sst: in stop\n");
625 status
= SST_PLATFORM_DROPPED
;
626 ret_val
= stream
->ops
->stream_drop(sst
->dev
, str_id
);
628 case SNDRV_PCM_TRIGGER_PAUSE_PUSH
:
629 case SNDRV_PCM_TRIGGER_SUSPEND
:
630 dev_dbg(rtd
->dev
, "sst: in pause\n");
631 status
= SST_PLATFORM_PAUSED
;
632 ret_val
= stream
->ops
->stream_pause(sst
->dev
, str_id
);
634 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE
:
635 case SNDRV_PCM_TRIGGER_RESUME
:
636 dev_dbg(rtd
->dev
, "sst: in pause release\n");
637 status
= SST_PLATFORM_RUNNING
;
638 ret_val
= stream
->ops
->stream_pause_release(sst
->dev
, str_id
);
645 sst_set_stream_status(stream
, status
);
651 static snd_pcm_uframes_t sst_platform_pcm_pointer
652 (struct snd_pcm_substream
*substream
)
654 struct sst_runtime_stream
*stream
;
656 struct pcm_stream_info
*str_info
;
657 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
659 stream
= substream
->runtime
->private_data
;
660 status
= sst_get_stream_status(stream
);
661 if (status
== SST_PLATFORM_INIT
)
663 str_info
= &stream
->stream_info
;
664 ret_val
= stream
->ops
->stream_read_tstamp(sst
->dev
, str_info
);
666 dev_err(rtd
->dev
, "sst: error code = %d\n", ret_val
);
669 substream
->runtime
->delay
= str_info
->pcm_delay
;
670 return str_info
->buffer_ptr
;
673 static struct snd_pcm_ops sst_platform_ops
= {
674 .open
= sst_platform_open
,
675 .ioctl
= snd_pcm_lib_ioctl
,
676 .trigger
= sst_platform_pcm_trigger
,
677 .pointer
= sst_platform_pcm_pointer
,
680 static int sst_pcm_new(struct snd_soc_pcm_runtime
*rtd
)
682 struct snd_soc_dai
*dai
= rtd
->cpu_dai
;
683 struct snd_pcm
*pcm
= rtd
->pcm
;
686 if (dai
->driver
->playback
.channels_min
||
687 dai
->driver
->capture
.channels_min
) {
688 retval
= snd_pcm_lib_preallocate_pages_for_all(pcm
,
689 SNDRV_DMA_TYPE_CONTINUOUS
,
690 snd_dma_continuous_data(GFP_DMA
),
691 SST_MIN_BUFFER
, SST_MAX_BUFFER
);
693 dev_err(rtd
->dev
, "dma buffer allocationf fail\n");
700 static int sst_soc_probe(struct snd_soc_platform
*platform
)
702 struct sst_data
*drv
= dev_get_drvdata(platform
->dev
);
704 drv
->soc_card
= platform
->component
.card
;
705 return sst_dsp_init_v2_dpcm(platform
);
708 static struct snd_soc_platform_driver sst_soc_platform_drv
= {
709 .probe
= sst_soc_probe
,
710 .ops
= &sst_platform_ops
,
711 .compr_ops
= &sst_platform_compr_ops
,
712 .pcm_new
= sst_pcm_new
,
715 static const struct snd_soc_component_driver sst_component
= {
720 static int sst_platform_probe(struct platform_device
*pdev
)
722 struct sst_data
*drv
;
724 struct sst_platform_data
*pdata
;
726 drv
= devm_kzalloc(&pdev
->dev
, sizeof(*drv
), GFP_KERNEL
);
731 pdata
= devm_kzalloc(&pdev
->dev
, sizeof(*pdata
), GFP_KERNEL
);
736 pdata
->pdev_strm_map
= dpcm_strm_map
;
737 pdata
->strm_map_size
= ARRAY_SIZE(dpcm_strm_map
);
740 mutex_init(&drv
->lock
);
741 dev_set_drvdata(&pdev
->dev
, drv
);
743 ret
= snd_soc_register_platform(&pdev
->dev
, &sst_soc_platform_drv
);
745 dev_err(&pdev
->dev
, "registering soc platform failed\n");
749 ret
= snd_soc_register_component(&pdev
->dev
, &sst_component
,
750 sst_platform_dai
, ARRAY_SIZE(sst_platform_dai
));
752 dev_err(&pdev
->dev
, "registering cpu dais failed\n");
753 snd_soc_unregister_platform(&pdev
->dev
);
758 static int sst_platform_remove(struct platform_device
*pdev
)
761 snd_soc_unregister_component(&pdev
->dev
);
762 snd_soc_unregister_platform(&pdev
->dev
);
763 dev_dbg(&pdev
->dev
, "sst_platform_remove success\n");
767 #ifdef CONFIG_PM_SLEEP
769 static int sst_soc_prepare(struct device
*dev
)
771 struct sst_data
*drv
= dev_get_drvdata(dev
);
772 struct snd_soc_pcm_runtime
*rtd
;
774 /* suspend all pcms first */
775 snd_soc_suspend(drv
->soc_card
->dev
);
776 snd_soc_poweroff(drv
->soc_card
->dev
);
778 /* set the SSPs to idle */
779 list_for_each_entry(rtd
, &drv
->soc_card
->rtd_list
, list
) {
780 struct snd_soc_dai
*dai
= rtd
->cpu_dai
;
783 send_ssp_cmd(dai
, dai
->name
, 0);
784 sst_handle_vb_timer(dai
, false);
791 static void sst_soc_complete(struct device
*dev
)
793 struct sst_data
*drv
= dev_get_drvdata(dev
);
794 struct snd_soc_pcm_runtime
*rtd
;
797 list_for_each_entry(rtd
, &drv
->soc_card
->rtd_list
, list
) {
798 struct snd_soc_dai
*dai
= rtd
->cpu_dai
;
801 sst_handle_vb_timer(dai
, true);
802 send_ssp_cmd(dai
, dai
->name
, 1);
805 snd_soc_resume(drv
->soc_card
->dev
);
810 #define sst_soc_prepare NULL
811 #define sst_soc_complete NULL
816 static const struct dev_pm_ops sst_platform_pm
= {
817 .prepare
= sst_soc_prepare
,
818 .complete
= sst_soc_complete
,
821 static struct platform_driver sst_platform_driver
= {
823 .name
= "sst-mfld-platform",
824 .pm
= &sst_platform_pm
,
826 .probe
= sst_platform_probe
,
827 .remove
= sst_platform_remove
,
830 module_platform_driver(sst_platform_driver
);
832 MODULE_DESCRIPTION("ASoC Intel(R) MID Platform driver");
833 MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
834 MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");
835 MODULE_LICENSE("GPL v2");
836 MODULE_ALIAS("platform:sst-mfld-platform");