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| author |   Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2020-01-20 10:05:03 +0900 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2020-01-21 17:06:41 +0000 |
| commit | 450312b640f9c6caeeaf4bd8d4130f86ea27f456 (patch) | |
| tree | 4c745851bd83277a150d728532baa103a705e212 /include/sound | |
| parent | ASoC: pxa: pxa2xx-i2s: move .suspend/.resume to component (diff) | |
| download | wireguard-linux-450312b640f9c6caeeaf4bd8d4130f86ea27f456.tar.xz wireguard-linux-450312b640f9c6caeeaf4bd8d4130f86ea27f456.zip | |
ASoC: soc-core: remove DAI suspend/resume
Historically, CPU and Codec were implemented different, but now it is
merged as Component.
ALSA SoC is supporting suspend/resume at DAI and Component level.
The method is like below.
1) Suspend/Resume all CPU DAI if bus-control was 0
2) Suspend/Resume all Component
3) Suspend/Resume all CPU DAI if bus-control was 1
Historically 2) was Codec special operation.
Because CPU and Codec were merged into Component,
CPU suspend/resume has 3 chance to suspend(= 1/2/3), but
Codec suspend/resume has 1 chance (= 2).
Here, DAI side suspend/resume is caring bus-control, but no driver
which is supporting suspend/resume is setting bus-control.
This means 3) was never used.
Here, used parameter for suspend/resume component->dev and dai->dev are
same pointer.
For that reason, we can merge DAI and Component suspend/resume.
One note is that we should use 2), because it is caring BIAS level.
This patch removes 1) and 3).
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87r1zvx7i8.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/sound')
| -rw-r--r-- | include/sound/soc-dai.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h index 939c73db6a03..2ccecf3e03d5 100644 --- a/include/sound/soc-dai.h +++ b/include/sound/soc-dai.h @@ -286,8 +286,6 @@ struct snd_soc_dai_driver { /* DAI driver callbacks */ int (*probe)(struct snd_soc_dai *dai); int (*remove)(struct snd_soc_dai *dai); - int (*suspend)(struct snd_soc_dai *dai); - int (*resume)(struct snd_soc_dai *dai); /* compress dai */ int (*compress_new)(struct snd_soc_pcm_runtime *rtd, int num); /* Optional Callback used at pcm creation*/ |