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ASoC: Intel: Fix stream position pointer.

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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>
This commit is contained in:
Liam Girdwood
2014-05-02 16:56:33 +01:00
committed by Mark Brown
parent 916152c488
commit 51b4e24f38
3 changed files with 29 additions and 7 deletions
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22
sound/soc/intel/sst-haswell-ipc.c
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@@ -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,