[PATCH 0/2] ASoC: mediatek: mt8195: repair pcmif BE dai

[PATCH 0/2] ASoC: mediatek: mt8195: repair pcmif BE dai

[Trevor Wu]

This series of patches repairs some problems for pcmif BE dai.
The unexpected control flow is corrected, and the missing playback
support of DPCM is added.

Patches are based on broonie tree "for-next" branch.

Trevor Wu (2):
  ASoC: mediatek: mt8195: correct pcmif BE dai control flow
  ASoC: mediatek: mt8195: add playback support to PCM1_BE dai_link

 sound/soc/mediatek/mt8195/mt8195-dai-pcm.c    | 73 ++++++-------------
 .../mt8195/mt8195-mt6359-rt1011-rt5682.c      |  1 +
 .../mt8195/mt8195-mt6359-rt1019-rt5682.c      |  1 +
 sound/soc/mediatek/mt8195/mt8195-reg.h        |  1 +
 4 files changed, 24 insertions(+), 52 deletions(-)

-- 
2.18.0


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[PATCH 1/2] ASoC: mediatek: mt8195: correct pcmif BE dai control flow

[Trevor Wu]

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@mediatek.com>
---
 sound/soc/mediatek/mt8195/mt8195-dai-pcm.c | 73 +++++++---------------
 sound/soc/mediatek/mt8195/mt8195-reg.h     |  1 +
 2 files changed, 22 insertions(+), 52 deletions(-)

diff --git a/sound/soc/mediatek/mt8195/mt8195-dai-pcm.c b/sound/soc/mediatek/mt8195/mt8195-dai-pcm.c
index 5d10d2c4c991..151914c873ac 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 d06f9cf85a4e..d3871353db41 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)
-- 
2.18.0


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[PATCH 2/2] ASoC: mediatek: mt8195: add playback support to PCM1_BE dai_link

[Trevor Wu]

PCM1_BE should be a dai_link for both playback and capture.
In the patch, the missing DPCM playback support is added.

Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
---
 sound/soc/mediatek/mt8195/mt8195-mt6359-rt1011-rt5682.c | 1 +
 sound/soc/mediatek/mt8195/mt8195-mt6359-rt1019-rt5682.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/sound/soc/mediatek/mt8195/mt8195-mt6359-rt1011-rt5682.c b/sound/soc/mediatek/mt8195/mt8195-mt6359-rt1011-rt5682.c
index 8adbd46c4bc4..5443a29da7b1 100644
--- a/sound/soc/mediatek/mt8195/mt8195-mt6359-rt1011-rt5682.c
+++ b/sound/soc/mediatek/mt8195/mt8195-mt6359-rt1011-rt5682.c
@@ -1045,6 +1045,7 @@ static struct snd_soc_dai_link mt8195_mt6359_rt1011_rt5682_dai_links[] = {
 		.dai_fmt = SND_SOC_DAIFMT_I2S |
 			SND_SOC_DAIFMT_NB_NF |
 			SND_SOC_DAIFMT_CBS_CFS,
+		.dpcm_playback = 1,
 		.dpcm_capture = 1,
 		SND_SOC_DAILINK_REG(PCM1_BE),
 	},
diff --git a/sound/soc/mediatek/mt8195/mt8195-mt6359-rt1019-rt5682.c b/sound/soc/mediatek/mt8195/mt8195-mt6359-rt1019-rt5682.c
index 20b351faeaff..29c2d3407cc7 100644
--- a/sound/soc/mediatek/mt8195/mt8195-mt6359-rt1019-rt5682.c
+++ b/sound/soc/mediatek/mt8195/mt8195-mt6359-rt1019-rt5682.c
@@ -1191,6 +1191,7 @@ static struct snd_soc_dai_link mt8195_mt6359_rt1019_rt5682_dai_links[] = {
 		.dai_fmt = SND_SOC_DAIFMT_I2S |
 			SND_SOC_DAIFMT_NB_NF |
 			SND_SOC_DAIFMT_CBS_CFS,
+		.dpcm_playback = 1,
 		.dpcm_capture = 1,
 		SND_SOC_DAILINK_REG(PCM1_BE),
 	},
-- 
2.18.0


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Re: [PATCH 0/2] ASoC: mediatek: mt8195: repair pcmif BE dai

[Mark Brown]

On Thu, 30 Dec 2021 16:47:29 +0800, Trevor Wu wrote:
> This series of patches repairs some problems for pcmif BE dai.
> The unexpected control flow is corrected, and the missing playback
> support of DPCM is added.
> 
> Patches are based on broonie tree "for-next" branch.
> 
> Trevor Wu (2):
>   ASoC: mediatek: mt8195: correct pcmif BE dai control flow
>   ASoC: mediatek: mt8195: add playback support to PCM1_BE dai_link
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/2] ASoC: mediatek: mt8195: correct pcmif BE dai control flow
      commit: 2355028c0c54c03afb66c589347f1dc9f6fe2e38
[2/2] ASoC: mediatek: mt8195: add playback support to PCM1_BE dai_link
      commit: db5e1c209b92a67ab7c1d7771a48294c9c093f7c

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

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