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| author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2024-10-21 01:59:43 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2024-10-23 14:02:04 +0200 |
| commit | 0e3dc8e4bd4a739401ada1541452fe1499254680 (patch) | |
| tree | c2410c62e29fa6ba860df591074a0bb30c4097ef /Documentation/sound | |
| parent | ASoC: soc-pcm: remove dpcm_xxx flags (diff) | |
| download | linux-0e3dc8e4bd4a739401ada1541452fe1499254680.tar.xz linux-0e3dc8e4bd4a739401ada1541452fe1499254680.zip | |
ASoC: doc: remove dpcm_xxx flags
dpcm_xxx flags are no longer needed. Let's remove it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://patch.msgid.link/874j569vgw.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation/sound')
| -rw-r--r-- | Documentation/sound/soc/dpcm.rst | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/Documentation/sound/soc/dpcm.rst b/Documentation/sound/soc/dpcm.rst index 2d7ad1d91504..02419a6f8213 100644 --- a/Documentation/sound/soc/dpcm.rst +++ b/Documentation/sound/soc/dpcm.rst @@ -157,15 +157,13 @@ FE DAI links are defined as follows :- .codec_dai_name = "snd-soc-dummy-dai", .dynamic = 1, .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, - .dpcm_playback = 1, }, .....< other FE and BE DAI links here > }; This FE DAI link is pretty similar to a regular DAI link except that we also -set the DAI link to a DPCM FE with the ``dynamic = 1``. The supported FE stream -directions should also be set with the ``dpcm_playback`` and ``dpcm_capture`` -flags. There is also an option to specify the ordering of the trigger call for +set the DAI link to a DPCM FE with the ``dynamic = 1``. +There is also an option to specify the ordering of the trigger call for each FE. This allows the ASoC core to trigger the DSP before or after the other components (as some DSPs have strong requirements for the ordering DAI/DSP start and stop sequences). @@ -189,15 +187,12 @@ The BE DAIs are configured as follows :- .ignore_pmdown_time = 1, .be_hw_params_fixup = hswult_ssp0_fixup, .ops = &haswell_ops, - .dpcm_playback = 1, - .dpcm_capture = 1, }, .....< other BE DAI links here > }; This BE DAI link connects DAI0 to the codec (in this case RT5460 AIF1). It sets -the ``no_pcm`` flag to mark it has a BE and sets flags for supported stream -directions using ``dpcm_playback`` and ``dpcm_capture`` above. +the ``no_pcm`` flag to mark it has a BE. The BE has also flags set for ignoring suspend and PM down time. This allows the BE to work in a hostless mode where the host CPU is not transferring data |