diff options
| author | Jyri Sarha <jyri.sarha@intel.com> | 2023-03-21 11:26:54 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2023-03-21 12:13:31 +0000 |
| commit | ca5ce0caa67fa9eeecaa29d895c2e4c3151c159e (patch) | |
| tree | 79cf6da268ed8a2a3e8b48c77406586eab4645b8 /include/uapi/sound | |
| parent | cb3cdef33136baceada86ba2a21ba30cd53a9087 (diff) | |
ASoC: SOF: ipc4/intel: Add support for chained DMA
Add logic for setting up and tearing down chained DMA connections.
Since pipelines are not used, all the logic to set the pipeline states
can be bypassed, with only the DMA programming sequences remaining. In
addition the same format needs to be used for host- and link-DMA,
without the usual fixup to use the S32_LE format on the link.
Note however that for convenience and compatibility with existing
definitions, the topology relies on the concept of pipelines with a
'USE_CHAIN_DMA' token indicating that all the logic shall be bypassed.
Unlike 'normal' ALSA sequences, the chain DMA is not programmed in
hw_params/hw_free. The IPC message to set-up and tear-down chained DMA
are sent in sof_ipc4_trigger_pipelines(), but the contents prepared
earlier.
Chained DMA is only supported by the Intel HDA DAI for now, and only
S16_LE and S32_LE formats are supported for now.
Signed-off-by: Jyri Sarha <jyri.sarha@intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20230321092654.7292-4-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/uapi/sound')
| -rw-r--r-- | include/uapi/sound/sof/tokens.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/sound/sof/tokens.h b/include/uapi/sound/sof/tokens.h index bd02842124f9..bbc37877aaff 100644 --- a/include/uapi/sound/sof/tokens.h +++ b/include/uapi/sound/sof/tokens.h @@ -54,6 +54,7 @@ #define SOF_TKN_SCHED_DYNAMIC_PIPELINE 206 #define SOF_TKN_SCHED_LP_MODE 207 #define SOF_TKN_SCHED_MEM_USAGE 208 +#define SOF_TKN_SCHED_USE_CHAIN_DMA 209 /* volume */ #define SOF_TKN_VOLUME_RAMP_STEP_TYPE 250 |