static int sst_platform_open(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime;
struct sst_runtime_stream *stream;
int ret_val = 0;
pr_debug("sst_platform_open called\n");
runtime = substream->runtime;
runtime->hw = sst_platform_pcm_hw;
stream = kzalloc(sizeof(*stream), GFP_KERNEL);
if (!stream)
return -ENOMEM;
spin_lock_init(&stream->status_lock);
stream->stream_info.str_id = 0;
sst_set_stream_status(stream, SST_PLATFORM_INIT);
stream->stream_info.mad_substream = substream;
/* allocate memory for SST API set */
stream->sstdrv_ops = kzalloc(sizeof(*stream->sstdrv_ops),
GFP_KERNEL);
if (!stream->sstdrv_ops) {
pr_err("sst: mem allocation for ops fail\n");
kfree(stream);
return -ENOMEM;
}
stream->sstdrv_ops->vendor_id = MSIC_VENDOR_ID;
/* registering with SST driver to get access to SST APIs to use */
ret_val = register_sst_card(stream->sstdrv_ops);
if (ret_val) {
pr_err("sst: sst card registration failed\n");
return ret_val;
}
runtime->private_data = stream;
return snd_pcm_hw_constraint_integer(runtime,
SNDRV_PCM_HW_PARAM_PERIODS);
}
static int sst_platform_compr_open(struct snd_compr_stream *cstream)
{
int ret_val = 0;
struct snd_compr_runtime *runtime = cstream->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 */
if (!sst || !try_module_get(sst->dev->driver->owner)) {
pr_err("no device available to run\n");
ret_val = -ENODEV;
goto out_ops;
}
stream->compr_ops = sst->compr_ops;
stream->id = 0;
sst_set_stream_status(stream, SST_PLATFORM_INIT);
runtime->private_data = stream;
return 0;
out_ops:
kfree(stream);
return ret_val;
}
static int sst_platform_pcm_trigger(struct snd_pcm_substream *substream,
int cmd)
{
int ret_val = 0, str_id;
struct sst_runtime_stream *stream;
int str_cmd, status, alsa_state;
if (substream->pcm->internal)
return 0;
pr_debug("sst_platform_pcm_trigger called\n");
stream = substream->runtime->private_data;
str_id = stream->stream_info.str_id;
alsa_state = substream->runtime->status->state;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
pr_debug("Trigger Start\n");
str_cmd = SST_SND_START;
status = SST_PLATFORM_RUNNING;
stream->stream_info.mad_substream = substream;
break;
case SNDRV_PCM_TRIGGER_STOP:
pr_debug("Trigger stop\n");
str_cmd = SST_SND_DROP;
status = SST_PLATFORM_DROPPED;
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
pr_debug("Trigger pause\n");
str_cmd = SST_SND_PAUSE;
status = SST_PLATFORM_PAUSED;
break;
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
pr_debug("Trigger pause release\n");
str_cmd = SST_SND_RESUME;
status = SST_PLATFORM_RUNNING;
break;
default:
return -EINVAL;
}
ret_val = stream->ops->device_control(str_cmd, &str_id);
if (!ret_val)
sst_set_stream_status(stream, status);
return ret_val;
}
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_dsp_lock);
if (!sst_dsp ||
!try_module_get(sst_dsp->dev->driver->owner)) {
pr_err("no device available to run\n");
ret_val = -ENODEV;
goto out_ops;
}
stream->ops = sst_dsp->ops;
mutex_unlock(&sst_dsp_lock);
stream->stream_info.str_id = 0;
sst_set_stream_status(stream, SST_PLATFORM_UNINIT);
stream->stream_info.mad_substream = substream;
runtime->private_data = stream;
if (strstr(dai->name, "Power-cpu-dai"))
return power_up_sst(stream);
/* Make sure, that the period size is always even */
snd_pcm_hw_constraint_step(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_PERIODS, 2);
pr_debug("buf_ptr %llu\n", stream->stream_info.buffer_ptr);
return snd_pcm_hw_constraint_integer(runtime,
SNDRV_PCM_HW_PARAM_PERIODS);
out_ops:
kfree(stream);
mutex_unlock(&sst_dsp_lock);
return ret_val;
}
static int sst_platform_pcm_trigger(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 = substream->private_data;
dev_dbg(rtd->dev, "sst_platform_pcm_trigger called\n");
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:
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:
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 int sst_platform_open(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct sst_runtime_stream *stream;
int ret_val;
pr_debug("sst_platform_open called\n");
snd_soc_set_runtime_hwparams(substream, &sst_platform_pcm_hw);
ret_val = snd_pcm_hw_constraint_integer(runtime,
SNDRV_PCM_HW_PARAM_PERIODS);
if (ret_val < 0)
return ret_val;
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) {
pr_err("no device available to run\n");
mutex_unlock(&sst_lock);
kfree(stream);
return -ENODEV;
}
if (!try_module_get(sst->dev->driver->owner)) {
mutex_unlock(&sst_lock);
kfree(stream);
return -ENODEV;
}
stream->ops = sst->ops;
mutex_unlock(&sst_lock);
stream->stream_info.str_id = 0;
sst_set_stream_status(stream, SST_PLATFORM_INIT);
stream->stream_info.mad_substream = substream;
/* allocate memory for SST API set */
runtime->private_data = stream;
return 0;
}
static int sst_platform_init_stream(struct snd_pcm_substream *substream)
{
struct sst_runtime_stream *stream =
substream->runtime->private_data;
int ret_val;
pr_debug("setting buffer ptr param\n");
sst_set_stream_status(stream, SST_PLATFORM_INIT);
stream->stream_info.period_elapsed = sst_period_elapsed;
stream->stream_info.mad_substream = substream;
stream->stream_info.buffer_ptr = 0;
stream->stream_info.sfreq = substream->runtime->rate;
ret_val = stream->ops->device_control(
SST_SND_STREAM_INIT, &stream->stream_info);
if (ret_val)
pr_err("control_set ret error %d\n", ret_val);
return ret_val;
}
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 = substream->private_data;
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;
}
