diff options
| author | Ranjani Sridharan <ranjani.sridharan@linux.intel.com> | 2019-06-12 12:23:37 -0500 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-06-17 13:43:22 +0100 |
| commit | 6b2239e3337b4c46b850078a6fc8f1a70ebe1c1f (patch) | |
| tree | 773c2d06381effbb14e680fdb94f56774ddef4f3 /sound/soc/sof/intel/hda.h | |
| parent | bdf4ad3fd01f5dc53c5d6d3b17afc98cd76d8988 (diff) | |
ASoC: SOF: Intel: hda: reserve host DMA channel for hostless streams
Due to the HW programming sequence requirement that the host
and link DMA channels need to be coupled/decoupled during pcm
hw_params, the host DMA channel corresponding to the link
DMA channel in use for hostless streams needs to be reserved.
This is achieved by adding a host_reserved flag in the
sof_intel_hda_stream structure which is checked when assigning
a host DMA channel.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sof/intel/hda.h')
| -rw-r--r-- | sound/soc/sof/intel/hda.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sound/soc/sof/intel/hda.h b/sound/soc/sof/intel/hda.h index 376b1ca51e2b..2862b4b3b07c 100644 --- a/sound/soc/sof/intel/hda.h +++ b/sound/soc/sof/intel/hda.h @@ -413,6 +413,7 @@ struct sof_intel_hda_stream { struct hdac_ext_stream hda_stream; struct sof_intel_stream stream; int hw_params_upon_resume; /* set up hw_params upon resume */ + int host_reserved; /* reserve host DMA channel */ }; #define hstream_to_sof_hda_stream(hstream) \ |