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path: root/sound/soc/intel/sst-baytrail-pcm.c
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Diffstat (limited to 'sound/soc/intel/sst-baytrail-pcm.c')
-rw-r--r--sound/soc/intel/sst-baytrail-pcm.c163
1 files changed, 133 insertions, 30 deletions
diff --git a/sound/soc/intel/sst-baytrail-pcm.c b/sound/soc/intel/sst-baytrail-pcm.c
index 6d101f3813b4..8eab97368ea7 100644
--- a/sound/soc/intel/sst-baytrail-pcm.c
+++ b/sound/soc/intel/sst-baytrail-pcm.c
@@ -45,6 +45,11 @@ struct sst_byt_pcm_data {
struct sst_byt_stream *stream;
struct snd_pcm_substream *substream;
struct mutex mutex;
+
+ /* latest DSP DMA hw pointer */
+ u32 hw_ptr;
+
+ struct work_struct work;
};
/* private data for the driver */
@@ -63,7 +68,7 @@ static int sst_byt_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct sst_byt_priv_data *pdata =
snd_soc_platform_get_drvdata(rtd->platform);
- struct sst_byt_pcm_data *pcm_data = snd_soc_pcm_get_drvdata(rtd);
+ struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream];
struct sst_byt *byt = pdata->byt;
u32 rate, bits;
u8 channels;
@@ -130,21 +135,57 @@ static int sst_byt_pcm_hw_free(struct snd_pcm_substream *substream)
return 0;
}
+static int sst_byt_pcm_restore_stream_context(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct sst_byt_priv_data *pdata =
+ snd_soc_platform_get_drvdata(rtd->platform);
+ struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream];
+ struct sst_byt *byt = pdata->byt;
+ int ret;
+
+ /* commit stream using existing stream params */
+ ret = sst_byt_stream_commit(byt, pcm_data->stream);
+ if (ret < 0) {
+ dev_err(rtd->dev, "PCM: failed stream commit %d\n", ret);
+ return ret;
+ }
+
+ sst_byt_stream_start(byt, pcm_data->stream, pcm_data->hw_ptr);
+
+ dev_dbg(rtd->dev, "stream context restored at offset %d\n",
+ pcm_data->hw_ptr);
+
+ return 0;
+}
+
+static void sst_byt_pcm_work(struct work_struct *work)
+{
+ struct sst_byt_pcm_data *pcm_data =
+ container_of(work, struct sst_byt_pcm_data, work);
+
+ if (snd_pcm_running(pcm_data->substream))
+ sst_byt_pcm_restore_stream_context(pcm_data->substream);
+}
+
static int sst_byt_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct sst_byt_priv_data *pdata =
snd_soc_platform_get_drvdata(rtd->platform);
- struct sst_byt_pcm_data *pcm_data = snd_soc_pcm_get_drvdata(rtd);
+ struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream];
struct sst_byt *byt = pdata->byt;
dev_dbg(rtd->dev, "PCM: trigger %d\n", cmd);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
- sst_byt_stream_start(byt, pcm_data->stream);
+ pcm_data->hw_ptr = 0;
+ sst_byt_stream_start(byt, pcm_data->stream, 0);
break;
case SNDRV_PCM_TRIGGER_RESUME:
+ schedule_work(&pcm_data->work);
+ break;
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
sst_byt_stream_resume(byt, pcm_data->stream);
break;
@@ -168,13 +209,19 @@ static u32 byt_notify_pointer(struct sst_byt_stream *stream, void *data)
struct snd_pcm_substream *substream = pcm_data->substream;
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
- u32 pos;
+ struct sst_byt_priv_data *pdata =
+ snd_soc_platform_get_drvdata(rtd->platform);
+ struct sst_byt *byt = pdata->byt;
+ u32 pos, hw_pos;
+ hw_pos = sst_byt_get_dsp_position(byt, pcm_data->stream,
+ snd_pcm_lib_buffer_bytes(substream));
+ pcm_data->hw_ptr = hw_pos;
pos = frames_to_bytes(runtime,
(runtime->control->appl_ptr %
runtime->buffer_size));
- dev_dbg(rtd->dev, "PCM: App pointer %d bytes\n", pos);
+ dev_dbg(rtd->dev, "PCM: App/DMA pointer %u/%u bytes\n", pos, hw_pos);
snd_pcm_period_elapsed(substream);
return pos;
@@ -186,18 +233,11 @@ static snd_pcm_uframes_t sst_byt_pcm_pointer(struct snd_pcm_substream *substream
struct snd_pcm_runtime *runtime = substream->runtime;
struct sst_byt_priv_data *pdata =
snd_soc_platform_get_drvdata(rtd->platform);
- struct sst_byt_pcm_data *pcm_data = snd_soc_pcm_get_drvdata(rtd);
- struct sst_byt *byt = pdata->byt;
- snd_pcm_uframes_t offset;
- int pos;
+ struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream];
- pos = sst_byt_get_dsp_position(byt, pcm_data->stream,
- snd_pcm_lib_buffer_bytes(substream));
- offset = bytes_to_frames(runtime, pos);
+ dev_dbg(rtd->dev, "PCM: DMA pointer %u bytes\n", pcm_data->hw_ptr);
- dev_dbg(rtd->dev, "PCM: DMA pointer %zu bytes\n",
- frames_to_bytes(runtime, (u32)offset));
- return offset;
+ return bytes_to_frames(runtime, pcm_data->hw_ptr);
}
static int sst_byt_pcm_open(struct snd_pcm_substream *substream)
@@ -205,20 +245,18 @@ static int sst_byt_pcm_open(struct snd_pcm_substream *substream)
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct sst_byt_priv_data *pdata =
snd_soc_platform_get_drvdata(rtd->platform);
- struct sst_byt_pcm_data *pcm_data = snd_soc_pcm_get_drvdata(rtd);
+ struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream];
struct sst_byt *byt = pdata->byt;
dev_dbg(rtd->dev, "PCM: open\n");
- pcm_data = &pdata->pcm[rtd->cpu_dai->id];
mutex_lock(&pcm_data->mutex);
- snd_soc_pcm_set_drvdata(rtd, pcm_data);
pcm_data->substream = substream;
snd_soc_set_runtime_hwparams(substream, &sst_byt_pcm_hardware);
- pcm_data->stream = sst_byt_stream_new(byt, rtd->cpu_dai->id + 1,
+ pcm_data->stream = sst_byt_stream_new(byt, substream->stream + 1,
byt_notify_pointer, pcm_data);
if (pcm_data->stream == NULL) {
dev_err(rtd->dev, "failed to create stream\n");
@@ -235,12 +273,13 @@ static int sst_byt_pcm_close(struct snd_pcm_substream *substream)
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct sst_byt_priv_data *pdata =
snd_soc_platform_get_drvdata(rtd->platform);
- struct sst_byt_pcm_data *pcm_data = snd_soc_pcm_get_drvdata(rtd);
+ struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream];
struct sst_byt *byt = pdata->byt;
int ret;
dev_dbg(rtd->dev, "PCM: close\n");
+ cancel_work_sync(&pcm_data->work);
mutex_lock(&pcm_data->mutex);
ret = sst_byt_stream_free(byt, pcm_data->stream);
if (ret < 0) {
@@ -283,18 +322,16 @@ static int sst_byt_pcm_new(struct snd_soc_pcm_runtime *rtd)
{
struct snd_pcm *pcm = rtd->pcm;
size_t size;
+ struct snd_soc_platform *platform = rtd->platform;
+ struct sst_pdata *pdata = dev_get_platdata(platform->dev);
int ret = 0;
- ret = dma_coerce_mask_and_coherent(rtd->card->dev, DMA_BIT_MASK(32));
- if (ret)
- return ret;
-
if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream ||
pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
size = sst_byt_pcm_hardware.buffer_bytes_max;
ret = snd_pcm_lib_preallocate_pages_for_all(pcm,
SNDRV_DMA_TYPE_DEV,
- rtd->card->dev,
+ pdata->dma_dev,
size, size);
if (ret) {
dev_err(rtd->dev, "dma buffer allocation failed %d\n",
@@ -308,7 +345,7 @@ static int sst_byt_pcm_new(struct snd_soc_pcm_runtime *rtd)
static struct snd_soc_dai_driver byt_dais[] = {
{
- .name = "Front-cpu-dai",
+ .name = "Baytrail PCM",
.playback = {
.stream_name = "System Playback",
.channels_min = 2,
@@ -317,9 +354,6 @@ static struct snd_soc_dai_driver byt_dais[] = {
.formats = SNDRV_PCM_FMTBIT_S24_3LE |
SNDRV_PCM_FMTBIT_S16_LE,
},
- },
- {
- .name = "Mic1-cpu-dai",
.capture = {
.stream_name = "Analog Capture",
.channels_min = 2,
@@ -344,8 +378,10 @@ static int sst_byt_pcm_probe(struct snd_soc_platform *platform)
priv_data->byt = plat_data->dsp;
snd_soc_platform_set_drvdata(platform, priv_data);
- for (i = 0; i < ARRAY_SIZE(byt_dais); i++)
+ for (i = 0; i < BYT_PCM_COUNT; i++) {
mutex_init(&priv_data->pcm[i].mutex);
+ INIT_WORK(&priv_data->pcm[i].work, sst_byt_pcm_work);
+ }
return 0;
}
@@ -367,6 +403,72 @@ static const struct snd_soc_component_driver byt_dai_component = {
.name = "byt-dai",
};
+#ifdef CONFIG_PM
+static int sst_byt_pcm_dev_suspend_noirq(struct device *dev)
+{
+ struct sst_pdata *sst_pdata = dev_get_platdata(dev);
+ int ret;
+
+ dev_dbg(dev, "suspending noirq\n");
+
+ /* at this point all streams will be stopped and context saved */
+ ret = sst_byt_dsp_suspend_noirq(dev, sst_pdata);
+ if (ret < 0) {
+ dev_err(dev, "failed to suspend %d\n", ret);
+ return ret;
+ }
+
+ return ret;
+}
+
+static int sst_byt_pcm_dev_suspend_late(struct device *dev)
+{
+ struct sst_pdata *sst_pdata = dev_get_platdata(dev);
+ int ret;
+
+ dev_dbg(dev, "suspending late\n");
+
+ ret = sst_byt_dsp_suspend_late(dev, sst_pdata);
+ if (ret < 0) {
+ dev_err(dev, "failed to suspend %d\n", ret);
+ return ret;
+ }
+
+ return ret;
+}
+
+static int sst_byt_pcm_dev_resume_early(struct device *dev)
+{
+ struct sst_pdata *sst_pdata = dev_get_platdata(dev);
+
+ dev_dbg(dev, "resume early\n");
+
+ /* load fw and boot DSP */
+ return sst_byt_dsp_boot(dev, sst_pdata);
+}
+
+static int sst_byt_pcm_dev_resume(struct device *dev)
+{
+ struct sst_pdata *sst_pdata = dev_get_platdata(dev);
+
+ dev_dbg(dev, "resume\n");
+
+ /* wait for FW to finish booting */
+ return sst_byt_dsp_wait_for_ready(dev, sst_pdata);
+}
+
+static const struct dev_pm_ops sst_byt_pm_ops = {
+ .suspend_noirq = sst_byt_pcm_dev_suspend_noirq,
+ .suspend_late = sst_byt_pcm_dev_suspend_late,
+ .resume_early = sst_byt_pcm_dev_resume_early,
+ .resume = sst_byt_pcm_dev_resume,
+};
+
+#define SST_BYT_PM_OPS (&sst_byt_pm_ops)
+#else
+#define SST_BYT_PM_OPS NULL
+#endif
+
static int sst_byt_pcm_dev_probe(struct platform_device *pdev)
{
struct sst_pdata *sst_pdata = dev_get_platdata(&pdev->dev);
@@ -409,6 +511,7 @@ static struct platform_driver sst_byt_pcm_driver = {
.driver = {
.name = "baytrail-pcm-audio",
.owner = THIS_MODULE,
+ .pm = SST_BYT_PM_OPS,
},
.probe = sst_byt_pcm_dev_probe,
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-25 13:32:38 +0000