| Message ID | 20230321092654.7292-1-peter.ujfalusi@linux.intel.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | ASoC: SOF: ipc4/intel: Support for ChainDMA | expand |
On Tue, 21 Mar 2023 11:26:51 +0200, Peter Ujfalusi wrote: > 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. > > [...] Applied to broonie/sound.git for-next Thanks! [1/3] ASoC: SOF: topology: Set pipeline widget before updating IPC structures commit: 3d3e223f09ed59f7a47d27cf4301b4d0d5c7fc3d [2/3] ASoC: SOF: ipc4: Add macros for chain-dma message bits commit: cb3cdef33136baceada86ba2a21ba30cd53a9087 [3/3] ASoC: SOF: ipc4/intel: Add support for chained DMA commit: ca5ce0caa67fa9eeecaa29d895c2e4c3151c159e All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark
On Tue, 21 Mar 2023 11:26:51 +0200, Peter Ujfalusi wrote: > 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. > > [...] Applied to https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next Thanks! [1/3] ASoC: SOF: topology: Set pipeline widget before updating IPC structures commit: 3d3e223f09ed59f7a47d27cf4301b4d0d5c7fc3d [2/3] ASoC: SOF: ipc4: Add macros for chain-dma message bits commit: cb3cdef33136baceada86ba2a21ba30cd53a9087 [3/3] ASoC: SOF: ipc4/intel: Add support for chained DMA commit: ca5ce0caa67fa9eeecaa29d895c2e4c3151c159e All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark
Hi, 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. Regards, Peter --- Jyri Sarha (2): ASoC: SOF: ipc4: Add macros for chain-dma message bits ASoC: SOF: ipc4/intel: Add support for chained DMA Ranjani Sridharan (1): ASoC: SOF: topology: Set pipeline widget before updating IPC structures include/sound/sof/ipc4/header.h | 29 +++++++ include/uapi/sound/sof/tokens.h | 1 + sound/soc/sof/intel/hda-dai-ops.c | 18 ++++- sound/soc/sof/ipc4-pcm.c | 122 +++++++++++++++++++++++++++++- sound/soc/sof/ipc4-topology.c | 120 ++++++++++++++++++++++++++++- sound/soc/sof/ipc4-topology.h | 2 + sound/soc/sof/topology.c | 48 ++++++------ 7 files changed, 308 insertions(+), 32 deletions(-)