Unverified Commit 0e3dc8e4 authored by Kuninori Morimoto's avatar Kuninori Morimoto Committed by Mark Brown
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ASoC: doc: remove dpcm_xxx flags 



dpcm_xxx flags are no longer needed. Let's remove it.

Signed-off-by: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://patch.msgid.link/874j569vgw.wl-kuninori.morimoto.gx@renesas.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent c7ae6551

Documentation/sound/soc/dpcm.rst

+3 −8
Original line number Diff line number Diff line
@@ -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