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| author | Mark Brown <broonie@kernel.org> | 2023-03-21 19:23:48 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2023-03-21 19:23:48 +0000 |
| commit | e3057eb574bae296665f7dfdb1692acc101b3727 (patch) | |
| tree | 29e5a34d5b5c2c691be9e081f1ce41b68e9abfa3 /include | |
| parent | 1c12e032cc43256d75fdd22e60a7df85e8df4549 (diff) | |
| parent | ca5ce0caa67fa9eeecaa29d895c2e4c3151c159e (diff) | |
| download | linux-stable-e3057eb574bae296665f7dfdb1692acc101b3727.tar.gz linux-stable-e3057eb574bae296665f7dfdb1692acc101b3727.tar.bz2 linux-stable-e3057eb574bae296665f7dfdb1692acc101b3727.zip | |
ASoC: SOF: ipc4/intel: Support for ChainDMA
Merge series from Peter Ujfalusi <peter.ujfalusi@linux.intel.com>:
On a platform when the DSP is in use, we cannot select individual links
to use or not use the DSP, it is either all or none. On some audio
endpoint, like HDMI/DP, it is preferred to not use any processing in DSP
to reduce the latency and to allow bytestream pass-through (DTS, DD,
etc)
IPC4 introduces a new type of end-to-end connection within the DSP which
is using the host DMA and link DMA in a single buffer, working
back-to-back, passing the received data without looking at it or trying
to understand the format, content.
This mode reduces the latency and allows non PCM streams to be sent from
userspace.
The feature is enabled per PCM bases, signalled in topology.
Diffstat (limited to 'include')
| -rw-r--r-- | include/sound/sof/ipc4/header.h | 29 | ||||
| -rw-r--r-- | include/uapi/sound/sof/tokens.h | 1 |
2 files changed, 30 insertions, 0 deletions
diff --git a/include/sound/sof/ipc4/header.h b/include/sound/sof/ipc4/header.h index 49ff1558a171..78568abe2673 100644 --- a/include/sound/sof/ipc4/header.h +++ b/include/sound/sof/ipc4/header.h @@ -196,6 +196,35 @@ enum sof_ipc4_pipeline_state { #define SOF_IPC4_GLB_LOAD_LIBRARY_LIB_ID_SHIFT 16 #define SOF_IPC4_GLB_LOAD_LIBRARY_LIB_ID(x) ((x) << SOF_IPC4_GLB_LOAD_LIBRARY_LIB_ID_SHIFT) +/* chain dma ipc message */ +#define SOF_IPC4_GLB_CHAIN_DMA_HOST_ID_SHIFT 0 +#define SOF_IPC4_GLB_CHAIN_DMA_HOST_ID_MASK GENMASK(4, 0) +#define SOF_IPC4_GLB_CHAIN_DMA_HOST_ID(x) (((x) << SOF_IPC4_GLB_CHAIN_DMA_HOST_ID_SHIFT) & \ + SOF_IPC4_GLB_CHAIN_DMA_HOST_ID_MASK) + +#define SOF_IPC4_GLB_CHAIN_DMA_LINK_ID_SHIFT 8 +#define SOF_IPC4_GLB_CHAIN_DMA_LINK_ID_MASK GENMASK(12, 8) +#define SOF_IPC4_GLB_CHAIN_DMA_LINK_ID(x) (((x) << SOF_IPC4_GLB_CHAIN_DMA_LINK_ID_SHIFT) & \ + SOF_IPC4_GLB_CHAIN_DMA_LINK_ID_MASK) + +#define SOF_IPC4_GLB_CHAIN_DMA_ALLOCATE_SHIFT 16 +#define SOF_IPC4_GLB_CHAIN_DMA_ALLOCATE_MASK BIT(16) +#define SOF_IPC4_GLB_CHAIN_DMA_ALLOCATE(x) (((x) & 1) << SOF_IPC4_GLB_CHAIN_DMA_ALLOCATE_SHIFT) + +#define SOF_IPC4_GLB_CHAIN_DMA_ENABLE_SHIFT 17 +#define SOF_IPC4_GLB_CHAIN_DMA_ENABLE_MASK BIT(17) +#define SOF_IPC4_GLB_CHAIN_DMA_ENABLE(x) (((x) & 1) << SOF_IPC4_GLB_CHAIN_DMA_ENABLE_SHIFT) + +#define SOF_IPC4_GLB_CHAIN_DMA_SCS_SHIFT 18 +#define SOF_IPC4_GLB_CHAIN_DMA_SCS_MASK BIT(18) +#define SOF_IPC4_GLB_CHAIN_DMA_SCS(x) (((x) & 1) << SOF_IPC4_GLB_CHAIN_DMA_SCS_SHIFT) + +#define SOF_IPC4_GLB_EXT_CHAIN_DMA_FIFO_SIZE_SHIFT 0 +#define SOF_IPC4_GLB_EXT_CHAIN_DMA_FIFO_SIZE_MASK GENMASK(24, 0) +#define SOF_IPC4_GLB_EXT_CHAIN_DMA_FIFO_SIZE(x) (((x) << \ + SOF_IPC4_GLB_EXT_CHAIN_DMA_FIFO_SIZE_SHIFT) & \ + SOF_IPC4_GLB_EXT_CHAIN_DMA_FIFO_SIZE_MASK) + enum sof_ipc4_channel_config { /* one channel only. */ SOF_IPC4_CHANNEL_CONFIG_MONO, 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 |