static int sst_cdev_open(struct device *dev,
struct snd_sst_params *str_params, struct sst_compress_cb *cb)
{
int str_id, retval;
struct stream_info *stream;
struct intel_sst_drv *ctx = dev_get_drvdata(dev);
retval = pm_runtime_get_sync(ctx->dev);
if (retval < 0)
return retval;
str_id = sst_get_stream(ctx, str_params);
if (str_id > 0) {
dev_dbg(dev, "stream allocated in sst_cdev_open %d\n", str_id);
stream = &ctx->streams[str_id];
stream->compr_cb = cb->compr_cb;
stream->compr_cb_param = cb->param;
stream->drain_notify = cb->drain_notify;
stream->drain_cb_param = cb->drain_cb_param;
} else {
dev_err(dev, "stream encountered error during alloc %d\n", str_id);
str_id = -EINVAL;
sst_pm_runtime_put(ctx);
}
return str_id;
}
/*
* sst_open_pcm_stream - Open PCM interface
*
* @str_param: parameters of pcm stream
*
* This function is called by MID sound card driver to open
* a new pcm interface
*/
static int sst_open_pcm_stream(struct device *dev,
struct snd_sst_params *str_param)
{
int retval;
struct intel_sst_drv *ctx = dev_get_drvdata(dev);
if (!str_param)
return -EINVAL;
retval = sst_get_stream(ctx, str_param);
if (retval > 0)
ctx->stream_cnt++;
else
dev_err(ctx->dev, "sst_get_stream returned err %d\n", retval);
return retval;
}
/*
* sst_open_pcm_stream - Open PCM interface
*
* @str_param: parameters of pcm stream
*
* This function is called by MID sound card driver to open
* a new pcm interface
*/
int sst_open_pcm_stream(struct snd_sst_params *str_param)
{
struct stream_info *str_info;
int retval;
pm_runtime_get_sync(&sst_drv_ctx->pci->dev);
if (sst_drv_ctx->sst_state == SST_SUSPENDED) {
/* LPE is suspended, resume it before proceeding*/
pr_debug("Resuming from Suspended state\n");
retval = intel_sst_resume(sst_drv_ctx->pci);
if (retval) {
pr_err("Resume Failed = %#x, abort\n", retval);
pm_runtime_put(&sst_drv_ctx->pci->dev);
return retval;
}
}
if (sst_drv_ctx->sst_state == SST_UN_INIT) {
/* FW is not downloaded */
pr_debug("DSP Downloading FW now...\n");
retval = sst_download_fw();
if (retval) {
pr_err("FW download fail %x, abort\n", retval);
pm_runtime_put(&sst_drv_ctx->pci->dev);
return retval;
}
send_intial_rx_timeslot();
}
if (!str_param) {
pm_runtime_put(&sst_drv_ctx->pci->dev);
return -EINVAL;
}
retval = sst_get_stream(str_param);
if (retval > 0) {
sst_drv_ctx->stream_cnt++;
str_info = &sst_drv_ctx->streams[retval];
str_info->src = MAD_DRV;
} else
pm_runtime_put(&sst_drv_ctx->pci->dev);
return retval;
}
