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-rw-r--r--sound/soc/intel/sst-haswell-ipc.c28
-rw-r--r--sound/soc/intel/sst-haswell-ipc.h9
-rw-r--r--sound/soc/intel/sst-haswell-pcm.c65
3 files changed, 102 insertions, 0 deletions
diff --git a/sound/soc/intel/sst-haswell-ipc.c b/sound/soc/intel/sst-haswell-ipc.c
index 0ab1309ef274..394af5684c05 100644
--- a/sound/soc/intel/sst-haswell-ipc.c
+++ b/sound/soc/intel/sst-haswell-ipc.c
@@ -31,6 +31,7 @@
#include <linux/dma-mapping.h>
#include <linux/debugfs.h>
#include <linux/pm_runtime.h>
+#include <sound/asound.h>
#include "sst-haswell-ipc.h"
#include "sst-dsp.h"
@@ -242,6 +243,9 @@ struct sst_hsw_stream {
u32 (*notify_position)(struct sst_hsw_stream *stream, void *data);
void *pdata;
+ /* record the fw read position when playback */
+ snd_pcm_uframes_t old_position;
+ bool play_silence;
struct list_head node;
};
@@ -1347,6 +1351,30 @@ int sst_hsw_stream_commit(struct sst_hsw *hsw, struct sst_hsw_stream *stream)
return 0;
}
+snd_pcm_uframes_t sst_hsw_stream_get_old_position(struct sst_hsw *hsw,
+ struct sst_hsw_stream *stream)
+{
+ return stream->old_position;
+}
+
+void sst_hsw_stream_set_old_position(struct sst_hsw *hsw,
+ struct sst_hsw_stream *stream, snd_pcm_uframes_t val)
+{
+ stream->old_position = val;
+}
+
+bool sst_hsw_stream_get_silence_start(struct sst_hsw *hsw,
+ struct sst_hsw_stream *stream)
+{
+ return stream->play_silence;
+}
+
+void sst_hsw_stream_set_silence_start(struct sst_hsw *hsw,
+ struct sst_hsw_stream *stream, bool val)
+{
+ stream->play_silence = val;
+}
+
/* Stream Information - these calls could be inline but we want the IPC
ABI to be opaque to client PCM drivers to cope with any future ABI changes */
int sst_hsw_mixer_get_info(struct sst_hsw *hsw)
diff --git a/sound/soc/intel/sst-haswell-ipc.h b/sound/soc/intel/sst-haswell-ipc.h
index c1ad901342f2..858096041cb1 100644
--- a/sound/soc/intel/sst-haswell-ipc.h
+++ b/sound/soc/intel/sst-haswell-ipc.h
@@ -20,6 +20,7 @@
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
+#include <sound/asound.h>
#define SST_HSW_NO_CHANNELS 4
#define SST_HSW_MAX_DX_REGIONS 14
@@ -425,6 +426,14 @@ int sst_hsw_stream_set_pmemory_info(struct sst_hsw *hsw,
struct sst_hsw_stream *stream, u32 offset, u32 size);
int sst_hsw_stream_set_smemory_info(struct sst_hsw *hsw,
struct sst_hsw_stream *stream, u32 offset, u32 size);
+snd_pcm_uframes_t sst_hsw_stream_get_old_position(struct sst_hsw *hsw,
+ struct sst_hsw_stream *stream);
+void sst_hsw_stream_set_old_position(struct sst_hsw *hsw,
+ struct sst_hsw_stream *stream, snd_pcm_uframes_t val);
+bool sst_hsw_stream_get_silence_start(struct sst_hsw *hsw,
+ struct sst_hsw_stream *stream);
+void sst_hsw_stream_set_silence_start(struct sst_hsw *hsw,
+ struct sst_hsw_stream *stream, bool val);
int sst_hsw_mixer_get_info(struct sst_hsw *hsw);
/* Stream ALSA trigger operations */
diff --git a/sound/soc/intel/sst-haswell-pcm.c b/sound/soc/intel/sst-haswell-pcm.c
index 78fa01be57f2..d6fa9d5514e1 100644
--- a/sound/soc/intel/sst-haswell-pcm.c
+++ b/sound/soc/intel/sst-haswell-pcm.c
@@ -36,6 +36,11 @@
#define HSW_PCM_COUNT 6
#define HSW_VOLUME_MAX 0x7FFFFFFF /* 0dB */
+#define SST_OLD_POSITION(d, r, o) ((d) + \
+ frames_to_bytes(r, o))
+#define SST_SAMPLES(r, x) (bytes_to_samples(r, \
+ frames_to_bytes(r, (x))))
+
/* simple volume table */
static const u32 volume_map[] = {
HSW_VOLUME_MAX >> 30,
@@ -577,23 +582,34 @@ static int hsw_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
struct hsw_priv_data *pdata =
snd_soc_platform_get_drvdata(rtd->platform);
struct hsw_pcm_data *pcm_data;
+ struct sst_hsw_stream *sst_stream;
struct sst_hsw *hsw = pdata->hsw;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ snd_pcm_uframes_t pos;
int dai;
dai = mod_map[rtd->cpu_dai->id].dai_id;
pcm_data = &pdata->pcm[dai][substream->stream];
+ sst_stream = pcm_data->stream;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ sst_hsw_stream_set_silence_start(hsw, sst_stream, false);
sst_hsw_stream_resume(hsw, pcm_data->stream, 0);
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ sst_hsw_stream_set_silence_start(hsw, sst_stream, false);
sst_hsw_stream_pause(hsw, pcm_data->stream, 0);
break;
+ case SNDRV_PCM_TRIGGER_DRAIN:
+ pos = runtime->control->appl_ptr % runtime->buffer_size;
+ sst_hsw_stream_set_old_position(hsw, pcm_data->stream, pos);
+ sst_hsw_stream_set_silence_start(hsw, sst_stream, true);
+ break;
default:
break;
}
@@ -607,13 +623,62 @@ static u32 hsw_notify_pointer(struct sst_hsw_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;
+ struct hsw_priv_data *pdata =
+ snd_soc_platform_get_drvdata(rtd->platform);
+ struct sst_hsw *hsw = pdata->hsw;
u32 pos;
+ snd_pcm_uframes_t position = bytes_to_frames(runtime,
+ sst_hsw_get_dsp_position(hsw, pcm_data->stream));
+ unsigned char *dma_area = runtime->dma_area;
+ snd_pcm_uframes_t dma_frames =
+ bytes_to_frames(runtime, runtime->dma_bytes);
+ snd_pcm_uframes_t old_position;
+ ssize_t samples;
pos = frames_to_bytes(runtime,
(runtime->control->appl_ptr % runtime->buffer_size));
dev_vdbg(rtd->dev, "PCM: App pointer %d bytes\n", pos);
+ /* SST fw don't know where to stop dma
+ * So, SST driver need to clean the data which has been consumed
+ */
+ if (dma_area == NULL || dma_frames <= 0
+ || (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+ || !sst_hsw_stream_get_silence_start(hsw, stream)) {
+ snd_pcm_period_elapsed(substream);
+ return pos;
+ }
+
+ old_position = sst_hsw_stream_get_old_position(hsw, stream);
+ if (position > old_position) {
+ if (position < dma_frames) {
+ samples = SST_SAMPLES(runtime, position - old_position);
+ snd_pcm_format_set_silence(runtime->format,
+ SST_OLD_POSITION(dma_area,
+ runtime, old_position),
+ samples);
+ } else
+ dev_err(rtd->dev, "PCM: position is wrong\n");
+ } else {
+ if (old_position < dma_frames) {
+ samples = SST_SAMPLES(runtime,
+ dma_frames - old_position);
+ snd_pcm_format_set_silence(runtime->format,
+ SST_OLD_POSITION(dma_area,
+ runtime, old_position),
+ samples);
+ } else
+ dev_err(rtd->dev, "PCM: dma_bytes is wrong\n");
+ if (position < dma_frames) {
+ samples = SST_SAMPLES(runtime, position);
+ snd_pcm_format_set_silence(runtime->format,
+ dma_area, samples);
+ } else
+ dev_err(rtd->dev, "PCM: position is wrong\n");
+ }
+ sst_hsw_stream_set_old_position(hsw, stream, position);
+
/* let alsa know we have play a period */
snd_pcm_period_elapsed(substream);
return pos;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-19 07:18:02 +0100