linux.git/include/sound/dmaengine_pcm.h, branch v6.7

ASoC: dmaengine: Drop unused iov_iter for process callback

2023-09-01T13:38:29+00:00

Passing the iov_iter to the process callback is rather buggy, as the
iterator has been already processed for playback.  Similarly, it makes
the copy for capture buggy after the process callback reading the
iterator out.  Moreover, all existing process callbacks don't refer to
the passed iterator at all.  So, it's better to drop the argument from
the process callback.

Fixes: 9bebd65443c1 ("ASoC: dmaengine: Use iov_iter for process callback, too")
Suggested-by: Linus Torvalds 
Link: https://lore.kernel.org/r/CAHk-=wje+VkXjjfVTmK-uJdG_M5=ar14QxAwK+XDiq07k_pzBg@mail.gmail.com
Reviewed-by: Mark Brown 
Link: https://lore.kernel.org/r/20230831130457.8180-1-tiwai@suse.de
Signed-off-by: Takashi Iwai

ASoC: dmaengine: Use iov_iter for process callback, too

2023-08-18T10:19:18+00:00

Along with the conversion to PCM copy ops, use the iov_iter for the
pointer to be passed to the dmaengine process callback, too.  It
avoids the direct reference of iter_iov_addr(), and it can potentially
help for the drivers to access memory properly (although both atmel
and stm drivers don't use the given buffer address at all for now).

Reviewed-by: Mark Brown 
Cc: Lars-Peter Clausen 
Cc: Claudiu Beznea 
Cc: Olivier Moysan 
Cc: Arnaud Pouliquen 
Link: https://lore.kernel.org/r/20230815190136.8987-23-tiwai@suse.de
Signed-off-by: Takashi Iwai

ALSA: dmaengine: Fix missing return value comments for kernel docs

2022-07-13T11:42:35+00:00

Each kernel doc comment expects the definition of the return value in
a proper format.  This patch adds or fixes the missing entries for PCM
dmaengine API.

Link: https://lore.kernel.org/r/20220713104759.4365-4-tiwai@suse.de
Signed-off-by: Takashi Iwai

ASoC: dai_dma: remove slave_id field

2021-12-17T05:53:56+00:00

This field is no longer set from any driver now, so remove the
last references as well.

Signed-off-by: Arnd Bergmann 
Acked-by: Mark Brown 
Link: https://lore.kernel.org/r/20211122222203.4103644-3-arnd@kernel.org
Signed-off-by: Vinod Koul

ASoC: dmaengine_pcm: add peripheral configuration

2021-02-05T17:16:41+00:00

The commit e7bbb7acabf4 ("dmaengine: add peripheral configuration")
adds peripheral configuration for dma_slave_config.

This configuration is useful for some audio peripherals, for
example, the peripheral supports multi fifos, we can
let the DMA know which fifos are selected. So also add
this configuration for snd_dmaengine_dai_dma_data.

Signed-off-by: Shengjiu Wang 
Link: https://lore.kernel.org/r/1612509985-11063-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown

ASoC: dmaengine_pcm: export soc_component_to_pcm

2020-06-12T13:18:02+00:00

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

2019-10-01T11:18:25+00:00

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

2019-02-14T16:17:35+00:00

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

2018-07-02T09:55:52+00:00

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

ASoC: dmaengine_pcm: document process callback

2018-03-13T16:42:08+00:00

Add missing description of process callback.

Fixes: 78648092ef46 ("ASoC: dmaengine_pcm: add processing support")
Signed-off-by: Olivier Moysan 
Signed-off-by: Mark Brown