This is a note to let you know that I've just added the patch titled ASoC: mediatek: mt8195: correct pcmif BE dai control flow to the 5.16-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: asoc-mediatek-mt8195-correct-pcmif-be-dai-control-fl.patch and it can be found in the queue-5.16 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit e220ff280dae19d187d337a56538a8b87221e1d5 Author: Trevor Wu <trevor.wu@xxxxxxxxxxxx> Date: Thu Dec 30 16:47:30 2021 +0800 ASoC: mediatek: mt8195: correct pcmif BE dai control flow [ Upstream commit 2355028c0c54c03afb66c589347f1dc9f6fe2e38 ] Originally, the conditions for preventing reentry are not correct. dai->component->active is not the state specifically for pcmif dai, so it is not a correct condition to indicate the status of pcmif dai. On the other hand, snd_soc_dai_stream_actvie() in prepare ops for both playback and capture possibly return true at the first entry when these two streams are opened at the same time. In the patch, I refer to the implementation in mt8192-dai-pcm.c. Clock and enabling bit for PCMIF are managed by DAPM, and the condition for prepare ops is replaced by the status of dai widget. Fixes: 1f95c019115c ("ASoC: mediatek: mt8195: support pcm in platform driver") Signed-off-by: Trevor Wu <trevor.wu@xxxxxxxxxxxx> Link: https://lore.kernel.org/r/20211230084731.31372-2-trevor.wu@xxxxxxxxxxxx Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/sound/soc/mediatek/mt8195/mt8195-dai-pcm.c b/sound/soc/mediatek/mt8195/mt8195-dai-pcm.c index 5d10d2c4c991c..151914c873acd 100644 --- a/sound/soc/mediatek/mt8195/mt8195-dai-pcm.c +++ b/sound/soc/mediatek/mt8195/mt8195-dai-pcm.c @@ -80,8 +80,15 @@ static const struct snd_soc_dapm_widget mtk_dai_pcm_widgets[] = { mtk_dai_pcm_o001_mix, ARRAY_SIZE(mtk_dai_pcm_o001_mix)), + SND_SOC_DAPM_SUPPLY("PCM_EN", PCM_INTF_CON1, + PCM_INTF_CON1_PCM_EN_SHIFT, 0, NULL, 0), + SND_SOC_DAPM_INPUT("PCM1_INPUT"), SND_SOC_DAPM_OUTPUT("PCM1_OUTPUT"), + + SND_SOC_DAPM_CLOCK_SUPPLY("aud_asrc11"), + SND_SOC_DAPM_CLOCK_SUPPLY("aud_asrc12"), + SND_SOC_DAPM_CLOCK_SUPPLY("aud_pcmif"), }; static const struct snd_soc_dapm_route mtk_dai_pcm_routes[] = { @@ -97,22 +104,18 @@ static const struct snd_soc_dapm_route mtk_dai_pcm_routes[] = { {"PCM1 Playback", NULL, "O000"}, {"PCM1 Playback", NULL, "O001"}, + {"PCM1 Playback", NULL, "PCM_EN"}, + {"PCM1 Playback", NULL, "aud_asrc12"}, + {"PCM1 Playback", NULL, "aud_pcmif"}, + + {"PCM1 Capture", NULL, "PCM_EN"}, + {"PCM1 Capture", NULL, "aud_asrc11"}, + {"PCM1 Capture", NULL, "aud_pcmif"}, + {"PCM1_OUTPUT", NULL, "PCM1 Playback"}, {"PCM1 Capture", NULL, "PCM1_INPUT"}, }; -static void mtk_dai_pcm_enable(struct mtk_base_afe *afe) -{ - regmap_update_bits(afe->regmap, PCM_INTF_CON1, - PCM_INTF_CON1_PCM_EN, PCM_INTF_CON1_PCM_EN); -} - -static void mtk_dai_pcm_disable(struct mtk_base_afe *afe) -{ - regmap_update_bits(afe->regmap, PCM_INTF_CON1, - PCM_INTF_CON1_PCM_EN, 0x0); -} - static int mtk_dai_pcm_configure(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { @@ -207,54 +210,22 @@ static int mtk_dai_pcm_configure(struct snd_pcm_substream *substream, } /* dai ops */ -static int mtk_dai_pcm_startup(struct snd_pcm_substream *substream, - struct snd_soc_dai *dai) -{ - struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai); - struct mt8195_afe_private *afe_priv = afe->platform_priv; - - if (dai->component->active) - return 0; - - mt8195_afe_enable_clk(afe, afe_priv->clk[MT8195_CLK_AUD_ASRC11]); - mt8195_afe_enable_clk(afe, afe_priv->clk[MT8195_CLK_AUD_ASRC12]); - mt8195_afe_enable_clk(afe, afe_priv->clk[MT8195_CLK_AUD_PCMIF]); - - return 0; -} - -static void mtk_dai_pcm_shutdown(struct snd_pcm_substream *substream, - struct snd_soc_dai *dai) -{ - struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai); - struct mt8195_afe_private *afe_priv = afe->platform_priv; - - if (dai->component->active) - return; - - mtk_dai_pcm_disable(afe); - - mt8195_afe_disable_clk(afe, afe_priv->clk[MT8195_CLK_AUD_PCMIF]); - mt8195_afe_disable_clk(afe, afe_priv->clk[MT8195_CLK_AUD_ASRC12]); - mt8195_afe_disable_clk(afe, afe_priv->clk[MT8195_CLK_AUD_ASRC11]); -} - static int mtk_dai_pcm_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { - struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai); - int ret = 0; + int ret; - if (snd_soc_dai_stream_active(dai, SNDRV_PCM_STREAM_PLAYBACK) && - snd_soc_dai_stream_active(dai, SNDRV_PCM_STREAM_CAPTURE)) + dev_dbg(dai->dev, "%s(), id %d, stream %d, widget active p %d, c %d\n", + __func__, dai->id, substream->stream, + dai->playback_widget->active, dai->capture_widget->active); + + if (dai->playback_widget->active || dai->capture_widget->active) return 0; ret = mtk_dai_pcm_configure(substream, dai); if (ret) return ret; - mtk_dai_pcm_enable(afe); - return 0; } @@ -316,8 +287,6 @@ static int mtk_dai_pcm_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) } static const struct snd_soc_dai_ops mtk_dai_pcm_ops = { - .startup = mtk_dai_pcm_startup, - .shutdown = mtk_dai_pcm_shutdown, .prepare = mtk_dai_pcm_prepare, .set_fmt = mtk_dai_pcm_set_fmt, }; diff --git a/sound/soc/mediatek/mt8195/mt8195-reg.h b/sound/soc/mediatek/mt8195/mt8195-reg.h index d06f9cf85a4ec..d3871353db415 100644 --- a/sound/soc/mediatek/mt8195/mt8195-reg.h +++ b/sound/soc/mediatek/mt8195/mt8195-reg.h @@ -2550,6 +2550,7 @@ #define PCM_INTF_CON1_PCM_FMT(x) (((x) & 0x3) << 1) #define PCM_INTF_CON1_PCM_FMT_MASK (0x3 << 1) #define PCM_INTF_CON1_PCM_EN BIT(0) +#define PCM_INTF_CON1_PCM_EN_SHIFT 0 /* PCM_INTF_CON2 */ #define PCM_INTF_CON2_CLK_DOMAIN_SEL(x) (((x) & 0x3) << 23)