kernel/include/sound/dmaengine_pcm.h, branch linux-5.11.y

ASoC: dmaengine_pcm: export soc_component_to_pcm

2020-06-12T13:18:02Z

In DPCM case, Front-End needs to get the dma chan which has been requested by Back-End and reuse it. Signed-off-by: Shengjiu Wang Reviewed-by: Nicolin Chen Link: https://lore.kernel.org/r/429c6ae1f3c5b47eb893f475d531d71cdcfe34c0.1591947428.git.shengjiu.wang@nxp.com Signed-off-by: Mark Brown

ASoC: pcm_dmaengine: Extract snd_dmaengine_pcm_refine_runtime_hwparams

2019-10-01T11:18:25Z

When set the runtime hardware parameters, we may need to query the capability of DMA to complete the parameters. This patch is to Extract this operation from dmaengine_pcm_set_runtime_hwparams function to a separate function snd_dmaengine_pcm_refine_runtime_hwparams, that other components which need this feature can call this function. Signed-off-by: Shengjiu Wang Reviewed-by: Nicolin Chen Link: https://lore.kernel.org/r/d728f65194e9978cbec4132b522d4fed420d704a.1569493933.git.shengjiu.wang@nxp.com Signed-off-by: Mark Brown

ASoC: dmaengine: Remove unused SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME flag

2019-02-14T16:17:35Z

There is now no users of this flag so remove it together with related code. The chan_name field of snd_dmaengine_dai_dma_data data structure is not removed as it is still in use by the PXA platform. Signed-off-by: Sylwester Nawrocki Acked-by: Krzysztof Kozlowski Signed-off-by: Mark Brown

ASoC: soc-generic-dmaengine-pcm: convert to SPDX identifiers

2018-07-02T09:55:52Z

Signed-off-by: Kuninori Morimoto Signed-off-by: Mark Brown

ASoC: dmaengine_pcm: document process callback

2018-03-13T16:42:08Z

Add missing description of process callback. Fixes: 78648092ef46 ("ASoC: dmaengine_pcm: add processing support") Signed-off-by: Olivier Moysan Signed-off-by: Mark Brown

ASoC: dmaengine_pcm: add processing support

2018-02-26T11:11:20Z

Allow dmaengine client to optionally register a processing callback. This callback is intended to apply processing on samples in buffer copied from/to user space, before/after DMA transfer. Signed-off-by: Olivier Moysan Signed-off-by: Mark Brown

ASoC: soc-generic-dmaengine-pcm: replace platform to component

2018-02-12T11:45:08Z

Now platform can be replaced to component, let's do it. Signed-off-by: Kuninori Morimoto Signed-off-by: Mark Brown

ASoC: Revert "Drop SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME flag"

2017-01-23T18:16:33Z

This reverts commit c6644119a3f80ea644bde10009d5e1013b5aff29 and restores the ability to specify DMA channel names per DAI dma_data. Unfortunately the functionality removed in the patch being reverted cannot be entirely replaced by specifying DMA channel names in struct snd_dmaengine_pcm_config as that does not cover devices with more than 2 DMA channels. Together with patch "ASoC: Revert "samsung: Remove unneeded initialization of chan_name"" this fixes broken sound on the s3c24xx SoC platforms. Signed-off-by: Sylwester Nawrocki Signed-off-by: Mark Brown

ASoC: Drop SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME flag

2016-10-25T19:22:53Z

Since commit 194c7dea00c68c1b1f8ff26304fa937a006f66dd "ASoC: dmaengine: add custom DMA config to snd_dmaengine_pcm_config" custom DMA channels can be also specified in chan_names[] field of struct snd_dmaengine_pcm_config. This patch removes chan_name field of struct snd_dmaengine_dai_dma_data as it is now unused. Signed-off-by: Sylwester Nawrocki Acked-by: Lars-Peter Clausen Signed-off-by: Mark Brown

ASoC: dmaengine_pcm: Add support for packed transfers

2016-04-27T16:34:11Z

dmaengine_pcm currently only supports setups where FIFO reads/writes correspond to exactly one sample, eg 16-bit sample data is transferred via 16-bit FIFO accesses, 32-bit data via 32-bit accesses. This patch adds support for setups with fixed width FIFOs where multiple samples are packed into a larger word. For example setups with a 32-bit wide FIFO register that expect 16-bit sample transfers to be done with the left+right sample data packed into a 32-bit word. Support for packed transfers is controlled via the SND_DMAENGINE_PCM_DAI_FLAG_PACK flag in snd_dmaengine_dai_dma_data.flags If this flag is set dmaengine_pcm doesn't put any restriction on the supported formats and sets the DMA transfer width to undefined. This means control over the constraints is now transferred to the DAI driver and it's responsible to provide proper configuration and check for possible corner cases that aren't handled by the ALSA core. Signed-off-by: Matthias Reichl Acked-by: Lars-Peter Clausen Tested-by: Martin Sperl Signed-off-by: Mark Brown