// SPDX-License-Identifier: GPL-2.0-only
/*
* sst_mfld_platform.c - Intel MID Platform driver
*
* Copyright (C) 2010-2014 Intel Corp
* Author: Vinod Koul <[email protected]>
* Author: Harsha Priya <[email protected]>
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/slab.h>
#include <linux/io.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/compress_driver.h>
#include <asm/platform_sst_audio.h>
#include "sst-mfld-platform.h"
#include "sst-atom-controls.h"
struct sst_device *sst;
static DEFINE_MUTEX(sst_lock);
int sst_register_dsp(struct sst_device *dev)
{
if (WARN_ON(!dev))
return -EINVAL;
if (!try_module_get(dev->dev->driver->owner))
return -ENODEV;
mutex_lock(&sst_lock);
if (sst) {
dev_err(dev->dev, "we already have a device %s\n", sst->name);
module_put(dev->dev->driver->owner);
mutex_unlock(&sst_lock);
return -EEXIST;
}
dev_dbg(dev->dev, "registering device %s\n", dev->name);
sst = dev;
mutex_unlock(&sst_lock);
return 0;
}
EXPORT_SYMBOL_GPL(sst_register_dsp);
int sst_unregister_dsp(struct sst_device *dev)
{
if (WARN_ON(!dev))
return -EINVAL;
if (dev != sst)
return -EINVAL;
mutex_lock(&sst_lock);
if (!sst) {
mutex_unlock(&sst_lock);
return -EIO;
}
module_put(sst->dev->driver->owner);
dev_dbg(dev->dev, "unreg %s\n", sst->name);
sst = NULL;
mutex_unlock(&sst_lock);
return 0;
}
EXPORT_SYMBOL_GPL(sst_unregister_dsp);
static const struct snd_pcm_hardware sst_platform_pcm_hw = {
.info = (SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_DOUBLE |
SNDRV_PCM_INFO_PAUSE |
SNDRV_PCM_INFO_RESUME |
SNDRV_PCM_INFO_MMAP|
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_SYNC_START),
.buffer_bytes_max = SST_MAX_BUFFER,
.period_bytes_min = SST_MIN_PERIOD_BYTES,
.period_bytes_max = SST_MAX_PERIOD_BYTES,
.periods_min = SST_MIN_PERIODS,
.periods_max = SST_MAX_PERIODS,
.fifo_size = SST_FIFO_SIZE,
};
static struct sst_dev_stream_map dpcm_strm_map[] = {
{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}, /* Reserved, not in use */
{MERR_DPCM_AUDIO, 0, SNDRV_PCM_STREAM_PLAYBACK, PIPE_MEDIA1_IN, SST_TASK_ID_MEDIA, 0},
{MERR_DPCM_COMPR, 0, SNDRV_PCM_STREAM_PLAYBACK, PIPE_MEDIA0_IN, SST_TASK_ID_MEDIA, 0},
{MERR_DPCM_AUDIO, 0, SNDRV_PCM_STREAM_CAPTURE, PIPE_PCM1_OUT, SST_TASK_ID_MEDIA, 0},
{MERR_DPCM_DEEP_BUFFER, 0, SNDRV_PCM_STREAM_PLAYBACK, PIPE_MEDIA3_IN, SST_TASK_ID_MEDIA, 0},
};
static int sst_media_digital_mute(struct snd_soc_dai *dai, int mute, int stream)
{
return sst_send_pipe_gains(dai, stream, mute);
}
/* helper functions */
void sst_set_stream_status(struct sst_runtime_stream *stream,
int state)
{
unsigned long flags;
spin_lock_irqsave(&stream->status_lock, flags);
stream->stream_status = state;
spin_unlock_irqrestore(&stream->status_lock, flags);
}
static inline int sst_get_stream_status(struct sst_runtime_stream *stream)
{
int state;
unsigned long flags;
spin_lock_irqsave(&stream->status_lock, flags);
state = stream->stream_status;
spin_unlock_irqrestore(&stream->status_lock, flags);
return state;
}
static void sst_fill_alloc_params(struct snd_pcm_substream *substream,
struct snd_sst_alloc_params_ext *alloc_param)
{
unsigned int channels;
snd_pcm_uframes_t period_size;
ssize_t periodbytes;
ssize_t buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
u32 buffer_addr = substream->runtime->dma_addr;
channels = substream->runtime->channels;
period_size = substream->runtime->period_size;
periodbytes = samples_to_bytes(substream->runtime, period_size);
alloc_param->ring_buf_info[0].addr = buffer_addr;
alloc_param->ring_buf_info[0].size = buffer_bytes;
alloc_param->sg_count = 1;
alloc_param->reserved = 0;
alloc_param->frag_size = periodbytes * channels;
}
static void sst_fill_pcm_params(struct snd_pcm_substream *substream,
struct snd_sst_stream_params *param)
{
param->uc.pcm_params.num_chan = (u8) substream->runtime->channels;
param->uc.pcm_params.pcm_wd_sz = substream->runtime->sample_bits;
param->uc.pcm_params.sfreq = substream->runtime->rate;
/* PCM stream via ALSA interface */
param->uc.pcm_params.use_offload_path = 0;
param->uc.pcm_params.reserved2 = 0;
memset(param->uc.pcm_params.channel_map, 0, sizeof(u8));
}
static int sst_get_stream_mapping(int dev, int sdev, int dir,
struct sst_dev_stream_map *map, int size)
{
int i;
if (map == NULL)
return -EINVAL;
/* index 0 is not used in stream map */
for (i = 1; i < size; i++) {
if ((map[i].dev_num == dev) && (map[i].direction == dir))
return i;
}
return 0;
}
int sst_fill_stream_params(void *substream,
const struct sst_data *ctx, struct snd_sst_params *str_params, bool is_compress)
{
int map_size;
int index;
struct sst_dev_stream_map *map;
struct snd_pcm_substream *pstream = NULL;
struct snd_compr_stream *cstream = NULL;
map = ctx->pdata->pdev_strm_map;
map_size = ctx->pdata->strm_map_size;
if (is_compress)
cstream = (struct snd_compr_stream *)substream;
else
pstream = (struct snd_pcm_substream *)substream;
str_params->stream_type = SST_STREAM_TYPE_MUSIC;
/* For pcm streams */
if (pstream) {
index = sst_get_stream_mapping(pstream->pcm->device,
pstream->number, pstream->stream,
map, map_size);
if (index <= 0)
return -EINVAL;
str_params->stream_id = index;
str_params->device_type = map[index].device_id;
str_params->task = map[index].task_id;
str_params->ops = (u8)pstream->stream;
}
if (cstream) {
index = sst_get_stream_mapping(cstream->device->device,
0, cstream->direction,
map, map_size);
if (index <= 0)
return -EINVAL;
str_params->stream_id = index;
str_params->device_type = map[index].device_id;
str_params->task = map[index].task_id;
str_params->ops = (u8)cstream->direction;
}
return 0;
}
static int sst_platform_alloc_stream(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct sst_runtime_stream *stream =
substream->runtime->private_data;
struct snd_sst_stream_params param = {{{0,},},};
struct snd_sst_params str_params = {0};
struct snd_sst_alloc_params_ext alloc_params = {0};
int ret_val = 0;
struct sst_data *ctx = snd_soc_dai_get_drvdata(dai);
/* set codec params and inform SST driver the same */
sst_fill_pcm_params(substream, ¶m);
sst_fill_alloc_params(substream, &alloc_params);
str_params.sparams = param;
str_params.aparams = alloc_params;
str_params.codec = SST_CODEC_TYPE_PCM;
/* fill the device type and stream id to pass to SST driver */
ret_val = sst_fill_stream_params(substream, ctx, &str_params, false);
if (ret_val < 0)
return ret_val;
stream->stream_info.str_id = str_params.stream_id;
ret_val = stream->ops->open(sst->dev, &str_params);
if (ret_val <= 0)
return ret_val;
return ret_val;
}
static void sst_period_elapsed(void *arg)
{
struct snd_pcm_substream *substream = arg;
struct sst_runtime_stream *stream;
int status;
if (!substream || !substream->runtime)
return;
stream = substream->runtime->private_data;
if (!stream)
return;
status = sst_get_stream_status(stream);
if (status != SST_PLATFORM_RUNNING)
return;
snd_pcm_period_elapsed(substream);
}
static int sst_platform_init_stream(struct snd_pcm_substream *substream)
{
struct sst_runtime_stream *stream =
substream->runtime->private_data;
struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
int ret_val;
dev_dbg(rtd->dev, "setting buffer ptr param\n");
sst_set_stream_status(stream, SST_PLATFORM_INIT);
stream->stream_info.period_elapsed = sst_period_elapsed;
stream->stream_info.arg = substream;
stream->stream_info.buffer_ptr = 0;
stream->stream_info.sfreq = substream->runtime->rate;
ret_val = stream->ops->stream_init(sst->dev, &stream->stream_info);
if (ret_val)
dev_err(rtd->dev, "control_set ret error %d\n", ret_val);
return ret_val;
}
static int power_up_sst(struct sst_runtime_stream *stream)
{
return stream->ops->power(sst->dev, true);
}
static void power_down_sst(struct sst_runtime_stream *stream)
{
stream->ops->power(sst->dev, false);
}
static int sst_media_open(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
int ret_val = 0;
struct snd_pcm_runtime *runtime = substream->runtime;
struct sst_runtime_stream *stream;
stream = kzalloc(sizeof(*stream), GFP_KERNEL);
if (!stream)
return -ENOMEM;
spin_lock_init(&stream->status_lock);
/* get the sst ops */
mutex_lock(&sst_lock);
if (!sst ||
!try_module_get(sst->dev->driver->owner)) {
dev_err(dai->dev, "no device available to run\n");
ret_val = -ENODEV;
goto out_ops;
}
stream->ops = sst->ops;
mutex_unlock(&sst_lock);
stream->stream_info.str_id = 0;
stream->stream_info.arg = substream;
/* allocate memory for SST API set */
runtime->private_data = stream;
ret_val = power_up_sst(stream);
if (ret_val < 0)
goto out_power_up;
/*
* Make sure the period to be multiple of 1ms to align the
* design of firmware. Apply same rule to buffer size to make
* sure alsa could always find a value for period size
* regardless the buffer size given by user space.
*/
snd_pcm_hw_constraint_step(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 48);
snd_pcm_hw_constraint_step(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 48);
/* Make sure, that the period size is always even */
snd_pcm_hw_constraint_step(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_PERIODS, 2);
return snd_pcm_hw_constraint_integer(runtime,
SNDRV_PCM_HW_PARAM_PERIODS);
out_ops:
mutex_unlock(&sst_lock);
out_power_up:
kfree(stream);
return ret_val;
}
static void sst_media_close(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct sst_runtime_stream *stream;
int str_id;
stream = substream->runtime->private_data;
power_down_sst(stream);
str_id = stream->stream_info.str_id;
if (str_id)
stream->ops->close(sst->dev, str_id);
module_put(sst->dev->driver->owner);
kfree(stream);
}
static int sst_media_prepare(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct sst_runtime_stream *stream;
int ret_val, str_id;
stream = substream->runtime->private_data;
str_id = stream->stream_info.str_id;
if (stream->stream_info.str_id) {
ret_val = stream->ops->stream_drop(sst->dev, str_id);
return ret_val;
}
ret_val = sst_platform_alloc_stream(substream, dai);
if (ret_val <= 0)
return ret_val;
snprintf(substream->pcm->id, sizeof(substream->pcm->id),
"%d", stream->stream_info.str_id);
ret_val = sst_platform_init_stream(substream);
if (ret_val)
return ret_val;
substream->runtime->hw.info = SNDRV_PCM_INFO_BLOCK_TRANSFER;
return 0;
}
static int sst_enable_ssp(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
int ret = 0;
if (!snd_soc_dai_active(dai)) {
ret = sst_handle_vb_timer(dai, true);
sst_fill_ssp_defaults(dai);
}
return ret;
}
static int sst_be_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
int ret = 0;
if (snd_soc_dai_active(dai) == 1)
ret = send_ssp_cmd(dai, dai->name, 1);
return ret;
}
static int sst_set_format(struct snd_soc_dai *dai, unsigned int fmt)
{
int ret = 0;
if (!snd_soc_dai_active(dai))
return 0;
ret = sst_fill_ssp_config(dai, fmt);
if (ret < 0)
dev_err(dai->dev, "sst_set_format failed..\n");
return ret;
}
static int sst_platform_set_ssp_slot(struct snd_soc_dai *dai,
unsigned int tx_mask, unsigned int rx_mask,
int slots, int slot_width) {
int ret = 0;
if (!snd_soc_dai_active(dai))
return ret;
ret = sst_fill_ssp_slot(dai, tx_mask, rx_mask, slots, slot_width);
if (ret < 0)
dev_err(dai->dev, "sst_fill_ssp_slot failed..%d\n", ret);
return ret;
}
static void sst_disable_ssp(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
if (!snd_soc_dai_active(dai)) {
send_ssp_cmd(dai, dai->name, 0);
sst_handle_vb_timer(dai, false);
}
}
static const struct snd_soc_dai_ops sst_media_dai_ops = {
.startup = sst_media_open,
.shutdown = sst_media_close,
.prepare = sst_media_prepare,
.mute_stream = sst_media_digital_mute,
};
static const struct snd_soc_dai_ops sst_compr_dai_ops = {
.compress_new = snd_soc_new_compress,
.mute_stream = sst_media_digital_mute,
};
static const struct snd_soc_dai_ops sst_be_dai_ops = {
.startup = sst_enable_ssp,
.hw_params = sst_be_hw_params,
.set_fmt = sst_set_format,
.set_tdm_slot = sst_platform_set_ssp_slot,
.shutdown = sst_disable_ssp,
};
static struct snd_soc_dai_driver sst_platform_dai[] = {
{
.name = "media-cpu-dai",
.ops = &sst_media_dai_ops,
.playback = {
.stream_name = "Headset Playback",
.channels_min = SST_STEREO,
.channels_max = SST_STEREO,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
.capture = {
.stream_name = "Headset Capture",
.channels_min = 1,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
},
{
.name = "deepbuffer-cpu-dai",
.ops = &sst_media_dai_ops,
.playback = {
.stream_name = "Deepbuffer Playback",
.channels_min = SST_STEREO,
.channels_max = SST_STEREO,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
},
{
.name = "compress-cpu-dai",
.ops = &sst_compr_dai_ops,
.playback = {
.stream_name = "Compress Playback",
.channels_min = 1,
},
},
/* BE CPU Dais */
{
.name = "ssp0-port",
.ops = &sst_be_dai_ops,
.playback = {
.stream_name = "ssp0 Tx",
.channels_min = SST_STEREO,
.channels_max = SST_STEREO,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
.capture = {
.stream_name = "ssp0 Rx",
.channels_min = SST_STEREO,
.channels_max = SST_STEREO,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
},
{
.name = "ssp1-port",
.ops = &sst_be_dai_ops,
.playback = {
.stream_name = "ssp1 Tx",
.channels_min = SST_STEREO,
.channels_max = SST_STEREO,
.rates = SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
.capture = {
.stream_name = "ssp1 Rx",
.channels_min = SST_STEREO,
.channels_max = SST_STEREO,
.rates = SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
},
{
.name = "ssp2-port",
.ops = &sst_be_dai_ops,
.playback = {
.stream_name = "ssp2 Tx",
.channels_min = SST_STEREO,
.channels_max = SST_STEREO,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
.capture = {
.stream_name = "ssp2 Rx",
.channels_min = SST_STEREO,
.channels_max = SST_STEREO,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
},
};
static int sst_soc_open(struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime;
if (substream->pcm->internal)
return 0;
runtime = substream->runtime;
runtime->hw = sst_platform_pcm_hw;
return 0;
}
static int sst_soc_trigger(struct snd_soc_component *component,
struct snd_pcm_substream *substream, int cmd)
{
int ret_val = 0, str_id;
struct sst_runtime_stream *stream;
int status;
struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
dev_dbg(rtd->dev, "%s called\n", __func__);
if (substream->pcm->internal)
return 0;
stream = substream->runtime->private_data;
str_id = stream->stream_info.str_id;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
dev_dbg(rtd->dev, "sst: Trigger Start\n");
status = SST_PLATFORM_RUNNING;
stream->stream_info.arg = substream;
ret_val = stream->ops->stream_start(sst->dev, str_id);
break;
case SNDRV_PCM_TRIGGER_STOP:
dev_dbg(rtd->dev, "sst: in stop\n");
status = SST_PLATFORM_DROPPED;
ret_val = stream->ops->stream_drop(sst->dev, str_id);
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
case SNDRV_PCM_TRIGGER_SUSPEND:
dev_dbg(rtd->dev, "sst: in pause\n");
status = SST_PLATFORM_PAUSED;
ret_val = stream->ops->stream_pause(sst->dev, str_id);
break;
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
case SNDRV_PCM_TRIGGER_RESUME:
dev_dbg(rtd->dev, "sst: in pause release\n");
status = SST_PLATFORM_RUNNING;
ret_val = stream->ops->stream_pause_release(sst->dev, str_id);
break;
default:
return -EINVAL;
}
if (!ret_val)
sst_set_stream_status(stream, status);
return ret_val;
}
static snd_pcm_uframes_t sst_soc_pointer(struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
struct sst_runtime_stream *stream;
int ret_val, status;
struct pcm_stream_info *str_info;
struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
stream = substream->runtime->private_data;
status = sst_get_stream_status(stream);
if (status == SST_PLATFORM_INIT)
return 0;
str_info = &stream->stream_info;
ret_val = stream->ops->stream_read_tstamp(sst->dev, str_info);
if (ret_val) {
dev_err(rtd->dev, "sst: error code = %d\n", ret_val);
return ret_val;
}
return str_info->buffer_ptr;
}
static snd_pcm_sframes_t sst_soc_delay(struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
struct sst_runtime_stream *stream = substream->runtime->private_data;
struct pcm_stream_info *str_info = &stream->stream_info;
if (sst_get_stream_status(stream) == SST_PLATFORM_INIT)
return 0;
return str_info->pcm_delay;
}
static int sst_soc_pcm_new(struct snd_soc_component *component,
struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_dai *dai = snd_soc_rtd_to_cpu(rtd, 0);
struct snd_pcm *pcm = rtd->pcm;
if (dai->driver->playback.channels_min ||
dai->driver->capture.channels_min) {
snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
pcm->card->dev,
SST_MIN_BUFFER, SST_MAX_BUFFER);
}
return 0;
}
static int sst_soc_probe(struct snd_soc_component *component)
{
struct sst_data *drv = dev_get_drvdata(component->dev);
drv->soc_card = component->card;
return sst_dsp_init_v2_dpcm(component);
}
static void sst_soc_remove(struct snd_soc_component *component)
{
struct sst_data *drv = dev_get_drvdata(component->dev);
drv->soc_card = NULL;
}
static const struct snd_soc_component_driver sst_soc_platform_drv = {
.name = DRV_NAME,
.probe = sst_soc_probe,
.remove = sst_soc_remove,
.open = sst_soc_open,
.trigger = sst_soc_trigger,
.pointer = sst_soc_pointer,
.delay = sst_soc_delay,
.compress_ops = &sst_platform_compress_ops,
.pcm_construct = sst_soc_pcm_new,
};
static int sst_platform_probe(struct platform_device *pdev)
{
struct sst_data *drv;
int ret;
struct sst_platform_data *pdata;
drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
if (drv == NULL) {
return -ENOMEM;
}
pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
if (pdata == NULL) {
return -ENOMEM;
}
pdata->pdev_strm_map = dpcm_strm_map;
pdata->strm_map_size = ARRAY_SIZE(dpcm_strm_map);
drv->pdata = pdata;
drv->pdev = pdev;
mutex_init(&drv->lock);
dev_set_drvdata(&pdev->dev, drv);
ret = devm_snd_soc_register_component(&pdev->dev, &sst_soc_platform_drv,
sst_platform_dai, ARRAY_SIZE(sst_platform_dai));
if (ret)
dev_err(&pdev->dev, "registering cpu dais failed\n");
return ret;
}
static void sst_platform_remove(struct platform_device *pdev)
{
dev_dbg(&pdev->dev, "sst_platform_remove success\n");
}
#ifdef CONFIG_PM_SLEEP
static int sst_soc_prepare(struct device *dev)
{
struct sst_data *drv = dev_get_drvdata(dev);
struct snd_soc_pcm_runtime *rtd;
if (!drv->soc_card)
return 0;
/* suspend all pcms first */
snd_soc_suspend(drv->soc_card->dev);
snd_soc_poweroff(drv->soc_card->dev);
/* set the SSPs to idle */
for_each_card_rtds(drv->soc_card, rtd) {
struct snd_soc_dai *dai = snd_soc_rtd_to_cpu(rtd, 0);
if (snd_soc_dai_active(dai)) {
send_ssp_cmd(dai, dai->name, 0);
sst_handle_vb_timer(dai, false);
}
}
return 0;
}
static void sst_soc_complete(struct device *dev)
{
struct sst_data *drv = dev_get_drvdata(dev);
struct snd_soc_pcm_runtime *rtd;
if (!drv->soc_card)
return;
/* restart SSPs */
for_each_card_rtds(drv->soc_card, rtd) {
struct snd_soc_dai *dai = snd_soc_rtd_to_cpu(rtd, 0);
if (snd_soc_dai_active(dai)) {
sst_handle_vb_timer(dai, true);
send_ssp_cmd(dai, dai->name, 1);
}
}
snd_soc_resume(drv->soc_card->dev);
}
#else
#define sst_soc_prepare NULL
#define sst_soc_complete NULL
#endif
static const struct dev_pm_ops sst_platform_pm = {
.prepare = sst_soc_prepare,
.complete = sst_soc_complete,
};
static struct platform_driver sst_platform_driver = {
.driver = {
.name = "sst-mfld-platform",
.pm = &sst_platform_pm,
},
.probe = sst_platform_probe,
.remove = sst_platform_remove,
};
module_platform_driver(sst_platform_driver);
MODULE_DESCRIPTION("ASoC Intel(R) MID Platform driver");
MODULE_AUTHOR("Vinod Koul <[email protected]>");
MODULE_AUTHOR("Harsha Priya <[email protected]>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:sst-atom-hifi2-platform");
MODULE_ALIAS("platform:sst-mfld-platform");
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