diff options
| author | Liam Girdwood <liam.r.girdwood@linux.intel.com> | 2014-05-02 16:56:33 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-05-02 09:54:05 -0700 |
| commit | 51b4e24f383c84ed927fef348072b6dc65b9816d (patch) | |
| tree | d0818cfe74582d6152c4b094d915bd53c8f36333 /sound/soc/intel | |
| parent | 916152c48848290a8aba5cf4dd16c2a8a888e11c (diff) | |
ASoC: Intel: Fix stream position pointer.
Read the stream offset and presentation position from DSP memory rather
than using the old estimated position. This fixes timing issues with
pulseaudio.
Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'sound/soc/intel')
| -rw-r--r-- | sound/soc/intel/sst-haswell-ipc.c | 22 | ||||
| -rw-r--r-- | sound/soc/intel/sst-haswell-ipc.h | 4 | ||||
| -rw-r--r-- | sound/soc/intel/sst-haswell-pcm.c | 10 |
3 files changed, 29 insertions, 7 deletions
diff --git a/sound/soc/intel/sst-haswell-ipc.c b/sound/soc/intel/sst-haswell-ipc.c index 5bcf5963a0ba..e7996b39a484 100644 --- a/sound/soc/intel/sst-haswell-ipc.c +++ b/sound/soc/intel/sst-haswell-ipc.c @@ -1547,10 +1547,28 @@ int sst_hsw_stream_reset(struct sst_hsw *hsw, struct sst_hsw_stream *stream) } /* Stream pointer positions */ -int sst_hsw_get_dsp_position(struct sst_hsw *hsw, +u32 sst_hsw_get_dsp_position(struct sst_hsw *hsw, struct sst_hsw_stream *stream) { - return stream->rpos.position; + u32 rpos; + + sst_dsp_read(hsw->dsp, &rpos, + stream->reply.read_position_register_address, sizeof(rpos)); + + return rpos; +} + +/* Stream presentation (monotonic) positions */ +u64 sst_hsw_get_dsp_presentation_position(struct sst_hsw *hsw, + struct sst_hsw_stream *stream) +{ + u64 ppos; + + sst_dsp_read(hsw->dsp, &ppos, + stream->reply.presentation_position_register_address, + sizeof(ppos)); + + return ppos; } int sst_hsw_stream_set_write_position(struct sst_hsw *hsw, diff --git a/sound/soc/intel/sst-haswell-ipc.h b/sound/soc/intel/sst-haswell-ipc.h index d517929ccc38..2ac194a6d04b 100644 --- a/sound/soc/intel/sst-haswell-ipc.h +++ b/sound/soc/intel/sst-haswell-ipc.h @@ -464,7 +464,9 @@ int sst_hsw_stream_get_write_pos(struct sst_hsw *hsw, struct sst_hsw_stream *stream, u32 *position); int sst_hsw_stream_set_write_position(struct sst_hsw *hsw, struct sst_hsw_stream *stream, u32 stage_id, u32 position); -int sst_hsw_get_dsp_position(struct sst_hsw *hsw, +u32 sst_hsw_get_dsp_position(struct sst_hsw *hsw, + struct sst_hsw_stream *stream); +u64 sst_hsw_get_dsp_presentation_position(struct sst_hsw *hsw, struct sst_hsw_stream *stream); /* HW port config */ diff --git a/sound/soc/intel/sst-haswell-pcm.c b/sound/soc/intel/sst-haswell-pcm.c index 50fea077898b..8c6bd33dd375 100644 --- a/sound/soc/intel/sst-haswell-pcm.c +++ b/sound/soc/intel/sst-haswell-pcm.c @@ -569,12 +569,14 @@ static snd_pcm_uframes_t hsw_pcm_pointer(struct snd_pcm_substream *substream) struct hsw_pcm_data *pcm_data = snd_soc_pcm_get_drvdata(rtd); struct sst_hsw *hsw = pdata->hsw; snd_pcm_uframes_t offset; + uint64_t ppos; + u32 position = sst_hsw_get_dsp_position(hsw, pcm_data->stream); - offset = bytes_to_frames(runtime, - sst_hsw_get_dsp_position(hsw, pcm_data->stream)); + offset = bytes_to_frames(runtime, position); + ppos = sst_hsw_get_dsp_presentation_position(hsw, pcm_data->stream); - dev_dbg(rtd->dev, "PCM: DMA pointer %zu bytes\n", - frames_to_bytes(runtime, (u32)offset)); + dev_dbg(rtd->dev, "PCM: DMA pointer %du bytes, pos %llu\n", + position, ppos); return offset; } |