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[alsa-devel] [PATCH 3/4] ASoC: mediatek: add BT implementation

Started byGarlic Tseng <garlic.tseng@mediatek.com>
First post2016-07-04 13:00 +0200
Last post2016-07-05 12:00 +0200
Articles 6 — 2 participants

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  [alsa-devel] [PATCH 3/4] ASoC: mediatek: add BT implementation Garlic Tseng <garlic.tseng@mediatek.com> - 2016-07-04 13:00 +0200
    Re: [alsa-devel] [PATCH 3/4] ASoC: mediatek: add BT implementation Mark Brown <broonie@kernel.org> - 2016-07-04 16:50 +0200
      Re: [alsa-devel] [PATCH 3/4] ASoC: mediatek: add BT implementation Garlic Tseng <garlic.tseng@mediatek.com> - 2016-07-05 04:00 +0200
        Re: [alsa-devel] [PATCH 3/4] ASoC: mediatek: add BT implementation Mark Brown <broonie@kernel.org> - 2016-07-05 10:20 +0200
          Re: [alsa-devel] [PATCH 3/4] ASoC: mediatek: add BT implementation Garlic Tseng <garlic.tseng@mediatek.com> - 2016-07-05 11:00 +0200
    Applied "ASoC: mediatek: add BT implementation" to the asoc tree Mark Brown <broonie@kernel.org> - 2016-07-05 12:00 +0200

#1436390 — [alsa-devel] [PATCH 3/4] ASoC: mediatek: add BT implementation

FromGarlic Tseng <garlic.tseng@mediatek.com>
Date2016-07-04 13:00 +0200
Subject[alsa-devel] [PATCH 3/4] ASoC: mediatek: add BT implementation
Message-ID<rR9Lz-4Ah-1@gated-at.bofh.it>
Add BT implementation for mt2701 platform driver.

Signed-off-by: Garlic Tseng <garlic.tseng@mediatek.com>
---
 sound/soc/mediatek/mt2701/mt2701-afe-pcm.c | 139 +++++++++++++++++++++++++++++
 1 file changed, 139 insertions(+)

diff --git a/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c b/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c
index c865ba1..6c14d68 100644
--- a/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c
+++ b/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c
@@ -333,6 +333,86 @@ static int mt2701_afe_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id,
 	return 0;
 }
 
+static int mt2701_btmrg_startup(struct snd_pcm_substream *substream,
+				struct snd_soc_dai *dai)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
+	struct mt2701_afe_private *afe_priv = afe->platform_priv;
+
+	regmap_update_bits(afe->regmap, AUDIO_TOP_CON4,
+			   AUDIO_TOP_CON4_PDN_MRGIF, 0);
+
+	afe_priv->mrg_enable[substream->stream] = 1;
+	return 0;
+}
+
+static int mt2701_btmrg_hw_params(struct snd_pcm_substream *substream,
+				  struct snd_pcm_hw_params *params,
+				  struct snd_soc_dai *dai)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
+	int stream_fs;
+	u32 val, msk;
+
+	stream_fs = params_rate(params);
+
+	if ((stream_fs != 8000) && (stream_fs != 16000)) {
+		dev_err(afe->dev, "%s() btmgr not supprt this stream_fs %d\n",
+			__func__, stream_fs);
+		return -EINVAL;
+	}
+
+	regmap_update_bits(afe->regmap, AFE_MRGIF_CON,
+			   AFE_MRGIF_CON_I2S_MODE_MASK,
+			   AFE_MRGIF_CON_I2S_MODE_32K);
+
+	val = AFE_DAIBT_CON0_BT_FUNC_EN | AFE_DAIBT_CON0_BT_FUNC_RDY
+	      | AFE_DAIBT_CON0_MRG_USE;
+	msk = val;
+
+	if (stream_fs == 16000)
+		val |= AFE_DAIBT_CON0_BT_WIDE_MODE_EN;
+
+	msk |= AFE_DAIBT_CON0_BT_WIDE_MODE_EN;
+
+	regmap_update_bits(afe->regmap, AFE_DAIBT_CON0, msk, val);
+
+	regmap_update_bits(afe->regmap, AFE_DAIBT_CON0,
+			   AFE_DAIBT_CON0_DAIBT_EN,
+			   AFE_DAIBT_CON0_DAIBT_EN);
+	regmap_update_bits(afe->regmap, AFE_MRGIF_CON,
+			   AFE_MRGIF_CON_MRG_I2S_EN,
+			   AFE_MRGIF_CON_MRG_I2S_EN);
+	regmap_update_bits(afe->regmap, AFE_MRGIF_CON,
+			   AFE_MRGIF_CON_MRG_EN,
+			   AFE_MRGIF_CON_MRG_EN);
+	return 0;
+}
+
+static void mt2701_btmrg_shutdown(struct snd_pcm_substream *substream,
+				  struct snd_soc_dai *dai)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
+	struct mt2701_afe_private *afe_priv = afe->platform_priv;
+
+	/* if the other direction stream is not occupied */
+	if (!afe_priv->mrg_enable[!substream->stream]) {
+		regmap_update_bits(afe->regmap, AFE_DAIBT_CON0,
+				   AFE_DAIBT_CON0_DAIBT_EN, 0);
+		regmap_update_bits(afe->regmap, AFE_MRGIF_CON,
+				   AFE_MRGIF_CON_MRG_EN, 0);
+		regmap_update_bits(afe->regmap, AFE_MRGIF_CON,
+				   AFE_MRGIF_CON_MRG_I2S_EN, 0);
+		regmap_update_bits(afe->regmap, AUDIO_TOP_CON4,
+				   AUDIO_TOP_CON4_PDN_MRGIF,
+				   AUDIO_TOP_CON4_PDN_MRGIF);
+	}
+	afe_priv->mrg_enable[substream->stream] = 0;
+}
+
 static int mt2701_simple_fe_startup(struct snd_pcm_substream *substream,
 				    struct snd_soc_dai *dai)
 {
@@ -514,6 +594,13 @@ static const struct snd_soc_dai_ops mt2701_afe_i2s_ops = {
 	.set_sysclk	= mt2701_afe_i2s_set_sysclk,
 };
 
+/* MRG BE DAIs */
+static struct snd_soc_dai_ops mt2701_btmrg_ops = {
+	.startup = mt2701_btmrg_startup,
+	.shutdown = mt2701_btmrg_shutdown,
+	.hw_params = mt2701_btmrg_hw_params,
+};
+
 static struct snd_soc_dai_driver mt2701_afe_pcm_dais[] = {
 	/* FE DAIs: memory intefaces to CPU */
 	{
@@ -566,6 +653,36 @@ static struct snd_soc_dai_driver mt2701_afe_pcm_dais[] = {
 		},
 		.ops = &mt2701_single_memif_dai_ops,
 	},
+	{
+		.name = "PCM_BT_DL",
+		.id = MT2701_MEMIF_DLBT,
+		.suspend = mtk_afe_dai_suspend,
+		.resume = mtk_afe_dai_resume,
+		.playback = {
+			.stream_name = "DLBT",
+			.channels_min = 1,
+			.channels_max = 1,
+			.rates = (SNDRV_PCM_RATE_8000
+				| SNDRV_PCM_RATE_16000),
+			.formats = SNDRV_PCM_FMTBIT_S16_LE,
+		},
+		.ops = &mt2701_single_memif_dai_ops,
+	},
+	{
+		.name = "PCM_BT_UL",
+		.id = MT2701_MEMIF_ULBT,
+		.suspend = mtk_afe_dai_suspend,
+		.resume = mtk_afe_dai_resume,
+		.capture = {
+			.stream_name = "ULBT",
+			.channels_min = 1,
+			.channels_max = 1,
+			.rates = (SNDRV_PCM_RATE_8000
+				| SNDRV_PCM_RATE_16000),
+			.formats = SNDRV_PCM_FMTBIT_S16_LE,
+		},
+		.ops = &mt2701_single_memif_dai_ops,
+	},
 	/* BE DAIs */
 	{
 		.name = "I2S0",
@@ -665,6 +782,28 @@ static struct snd_soc_dai_driver mt2701_afe_pcm_dais[] = {
 		.ops = &mt2701_afe_i2s_ops,
 		.symmetric_rates = 1,
 	},
+	{
+		.name = "MRG BT",
+		.id = MT2701_IO_MRG,
+		.playback = {
+			.stream_name = "BT Playback",
+			.channels_min = 1,
+			.channels_max = 1,
+			.rates = (SNDRV_PCM_RATE_8000
+				| SNDRV_PCM_RATE_16000),
+			.formats = SNDRV_PCM_FMTBIT_S16_LE,
+		},
+		.capture = {
+			.stream_name = "BT Capture",
+			.channels_min = 1,
+			.channels_max = 1,
+			.rates = (SNDRV_PCM_RATE_8000
+				| SNDRV_PCM_RATE_16000),
+			.formats = SNDRV_PCM_FMTBIT_S16_LE,
+		},
+		.ops = &mt2701_btmrg_ops,
+		.symmetric_rates = 1,
+	}
 };
 
 static const struct snd_kcontrol_new mt2701_afe_o00_mix[] = {
-- 
1.9.1

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#1436564

FromMark Brown <broonie@kernel.org>
Date2016-07-04 16:50 +0200
Message-ID<rRdm9-6R8-9@gated-at.bofh.it>
In reply to#1436390

[Multipart message — attachments visible in raw view] — view raw

On Mon, Jul 04, 2016 at 06:56:27PM +0800, Garlic Tseng wrote:

> +static int mt2701_btmrg_startup(struct snd_pcm_substream *substream,
> +				struct snd_soc_dai *dai)
> +{
> +	struct snd_soc_pcm_runtime *rtd = substream->private_data;
> +	struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
> +	struct mt2701_afe_private *afe_priv = afe->platform_priv;
> +
> +	regmap_update_bits(afe->regmap, AUDIO_TOP_CON4,
> +			   AUDIO_TOP_CON4_PDN_MRGIF, 0);

We really shouldn't be writing the registers or other internal data of
the device.  Instead we should be getting the driver for the relevant
hardware component to do it.  If we just write to registers that makes
the interoperation with the real driver for the device more fragile than
it should be, people might update the main driver without noticing the
external driver.

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#1436724

FromGarlic Tseng <garlic.tseng@mediatek.com>
Date2016-07-05 04:00 +0200
Message-ID<rRnOx-4Kl-1@gated-at.bofh.it>
In reply to#1436564
On Mon, 2016-07-04 at 16:44 +0200, Mark Brown wrote:
> On Mon, Jul 04, 2016 at 06:56:27PM +0800, Garlic Tseng wrote:
> 
> > +static int mt2701_btmrg_startup(struct snd_pcm_substream *substream,
> > +				struct snd_soc_dai *dai)
> > +{
> > +	struct snd_soc_pcm_runtime *rtd = substream->private_data;
> > +	struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
> > +	struct mt2701_afe_private *afe_priv = afe->platform_priv;
> > +
> > +	regmap_update_bits(afe->regmap, AUDIO_TOP_CON4,
> > +			   AUDIO_TOP_CON4_PDN_MRGIF, 0);
> 
> We really shouldn't be writing the registers or other internal data of
> the device.  Instead we should be getting the driver for the relevant
> hardware component to do it.  If we just write to registers that makes
> the interoperation with the real driver for the device more fragile than
> it should be, people might update the main driver without noticing the
> external driver.

The AUDIO_TOP_CON4 is a reg of the ASoC hw module. All the registers
which are set in the btmrg operator belong to ASoC hardware. The reg
writing you mention above is to power up the MRG interface in the ASoC
module.

When we start BT link, we need to start some hardware component belongs
to ASoC module. Of course we also need to start up the BT module
(including start up the MRG interface hw in BT chip), but it is not in
the ASoC driver.

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#1436836

FromMark Brown <broonie@kernel.org>
Date2016-07-05 10:20 +0200
Message-ID<rRtKh-g7-25@gated-at.bofh.it>
In reply to#1436724

[Multipart message — attachments visible in raw view] — view raw

On Tue, Jul 05, 2016 at 09:52:13AM +0800, Garlic Tseng wrote:
> On Mon, 2016-07-04 at 16:44 +0200, Mark Brown wrote:

> > We really shouldn't be writing the registers or other internal data of
> > the device.  Instead we should be getting the driver for the relevant
> > hardware component to do it.  If we just write to registers that makes
> > the interoperation with the real driver for the device more fragile than
> > it should be, people might update the main driver without noticing the
> > external driver.

> The AUDIO_TOP_CON4 is a reg of the ASoC hw module. All the registers
> which are set in the btmrg operator belong to ASoC hardware. The reg
> writing you mention above is to power up the MRG interface in the ASoC
> module.

The problem is that this is the machine driver, not a driver for the
chip that's being controlled.

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#1436848

FromGarlic Tseng <garlic.tseng@mediatek.com>
Date2016-07-05 11:00 +0200
Message-ID<rRun0-ty-17@gated-at.bofh.it>
In reply to#1436836
On Tue, 2016-07-05 at 10:12 +0200, Mark Brown wrote:
> On Tue, Jul 05, 2016 at 09:52:13AM +0800, Garlic Tseng wrote:
> > On Mon, 2016-07-04 at 16:44 +0200, Mark Brown wrote:
> 
> > > We really shouldn't be writing the registers or other internal data of
> > > the device.  Instead we should be getting the driver for the relevant
> > > hardware component to do it.  If we just write to registers that makes
> > > the interoperation with the real driver for the device more fragile than
> > > it should be, people might update the main driver without noticing the
> > > external driver.
> 
> > The AUDIO_TOP_CON4 is a reg of the ASoC hw module. All the registers
> > which are set in the btmrg operator belong to ASoC hardware. The reg
> > writing you mention above is to power up the MRG interface in the ASoC
> > module.
> 
> The problem is that this is the machine driver, not a driver for the
> chip that's being controlled.

The patch is for platform driver "mt2701-afe-pcm.c", which contorls the
ASoC module, not for machine driver. Maybe the patch sequence is
confusing and I'm sorry about that. Or did I misunderstand your comment?

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#1436879 — Applied "ASoC: mediatek: add BT implementation" to the asoc tree

FromMark Brown <broonie@kernel.org>
Date2016-07-05 12:00 +0200
SubjectApplied "ASoC: mediatek: add BT implementation" to the asoc tree
Message-ID<rRvj3-16J-23@gated-at.bofh.it>
In reply to#1436390
The patch

   ASoC: mediatek: add BT implementation

has been applied to the asoc tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git 

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

From 4bdc8d452c18a5b4f439a1bffdda6789c4a6c606 Mon Sep 17 00:00:00 2001
From: Garlic Tseng <garlic.tseng@mediatek.com>
Date: Mon, 4 Jul 2016 18:56:27 +0800
Subject: [PATCH] ASoC: mediatek: add BT implementation

Add BT implementation for mt2701 platform driver.

Signed-off-by: Garlic Tseng <garlic.tseng@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/mediatek/mt2701/mt2701-afe-pcm.c | 139 +++++++++++++++++++++++++++++
 1 file changed, 139 insertions(+)

diff --git a/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c b/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c
index c865ba13617c..6c14d686bfa1 100644
--- a/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c
+++ b/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c
@@ -333,6 +333,86 @@ static int mt2701_afe_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id,
 	return 0;
 }
 
+static int mt2701_btmrg_startup(struct snd_pcm_substream *substream,
+				struct snd_soc_dai *dai)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
+	struct mt2701_afe_private *afe_priv = afe->platform_priv;
+
+	regmap_update_bits(afe->regmap, AUDIO_TOP_CON4,
+			   AUDIO_TOP_CON4_PDN_MRGIF, 0);
+
+	afe_priv->mrg_enable[substream->stream] = 1;
+	return 0;
+}
+
+static int mt2701_btmrg_hw_params(struct snd_pcm_substream *substream,
+				  struct snd_pcm_hw_params *params,
+				  struct snd_soc_dai *dai)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
+	int stream_fs;
+	u32 val, msk;
+
+	stream_fs = params_rate(params);
+
+	if ((stream_fs != 8000) && (stream_fs != 16000)) {
+		dev_err(afe->dev, "%s() btmgr not supprt this stream_fs %d\n",
+			__func__, stream_fs);
+		return -EINVAL;
+	}
+
+	regmap_update_bits(afe->regmap, AFE_MRGIF_CON,
+			   AFE_MRGIF_CON_I2S_MODE_MASK,
+			   AFE_MRGIF_CON_I2S_MODE_32K);
+
+	val = AFE_DAIBT_CON0_BT_FUNC_EN | AFE_DAIBT_CON0_BT_FUNC_RDY
+	      | AFE_DAIBT_CON0_MRG_USE;
+	msk = val;
+
+	if (stream_fs == 16000)
+		val |= AFE_DAIBT_CON0_BT_WIDE_MODE_EN;
+
+	msk |= AFE_DAIBT_CON0_BT_WIDE_MODE_EN;
+
+	regmap_update_bits(afe->regmap, AFE_DAIBT_CON0, msk, val);
+
+	regmap_update_bits(afe->regmap, AFE_DAIBT_CON0,
+			   AFE_DAIBT_CON0_DAIBT_EN,
+			   AFE_DAIBT_CON0_DAIBT_EN);
+	regmap_update_bits(afe->regmap, AFE_MRGIF_CON,
+			   AFE_MRGIF_CON_MRG_I2S_EN,
+			   AFE_MRGIF_CON_MRG_I2S_EN);
+	regmap_update_bits(afe->regmap, AFE_MRGIF_CON,
+			   AFE_MRGIF_CON_MRG_EN,
+			   AFE_MRGIF_CON_MRG_EN);
+	return 0;
+}
+
+static void mt2701_btmrg_shutdown(struct snd_pcm_substream *substream,
+				  struct snd_soc_dai *dai)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
+	struct mt2701_afe_private *afe_priv = afe->platform_priv;
+
+	/* if the other direction stream is not occupied */
+	if (!afe_priv->mrg_enable[!substream->stream]) {
+		regmap_update_bits(afe->regmap, AFE_DAIBT_CON0,
+				   AFE_DAIBT_CON0_DAIBT_EN, 0);
+		regmap_update_bits(afe->regmap, AFE_MRGIF_CON,
+				   AFE_MRGIF_CON_MRG_EN, 0);
+		regmap_update_bits(afe->regmap, AFE_MRGIF_CON,
+				   AFE_MRGIF_CON_MRG_I2S_EN, 0);
+		regmap_update_bits(afe->regmap, AUDIO_TOP_CON4,
+				   AUDIO_TOP_CON4_PDN_MRGIF,
+				   AUDIO_TOP_CON4_PDN_MRGIF);
+	}
+	afe_priv->mrg_enable[substream->stream] = 0;
+}
+
 static int mt2701_simple_fe_startup(struct snd_pcm_substream *substream,
 				    struct snd_soc_dai *dai)
 {
@@ -514,6 +594,13 @@ static const struct snd_soc_dai_ops mt2701_afe_i2s_ops = {
 	.set_sysclk	= mt2701_afe_i2s_set_sysclk,
 };
 
+/* MRG BE DAIs */
+static struct snd_soc_dai_ops mt2701_btmrg_ops = {
+	.startup = mt2701_btmrg_startup,
+	.shutdown = mt2701_btmrg_shutdown,
+	.hw_params = mt2701_btmrg_hw_params,
+};
+
 static struct snd_soc_dai_driver mt2701_afe_pcm_dais[] = {
 	/* FE DAIs: memory intefaces to CPU */
 	{
@@ -566,6 +653,36 @@ static struct snd_soc_dai_driver mt2701_afe_pcm_dais[] = {
 		},
 		.ops = &mt2701_single_memif_dai_ops,
 	},
+	{
+		.name = "PCM_BT_DL",
+		.id = MT2701_MEMIF_DLBT,
+		.suspend = mtk_afe_dai_suspend,
+		.resume = mtk_afe_dai_resume,
+		.playback = {
+			.stream_name = "DLBT",
+			.channels_min = 1,
+			.channels_max = 1,
+			.rates = (SNDRV_PCM_RATE_8000
+				| SNDRV_PCM_RATE_16000),
+			.formats = SNDRV_PCM_FMTBIT_S16_LE,
+		},
+		.ops = &mt2701_single_memif_dai_ops,
+	},
+	{
+		.name = "PCM_BT_UL",
+		.id = MT2701_MEMIF_ULBT,
+		.suspend = mtk_afe_dai_suspend,
+		.resume = mtk_afe_dai_resume,
+		.capture = {
+			.stream_name = "ULBT",
+			.channels_min = 1,
+			.channels_max = 1,
+			.rates = (SNDRV_PCM_RATE_8000
+				| SNDRV_PCM_RATE_16000),
+			.formats = SNDRV_PCM_FMTBIT_S16_LE,
+		},
+		.ops = &mt2701_single_memif_dai_ops,
+	},
 	/* BE DAIs */
 	{
 		.name = "I2S0",
@@ -665,6 +782,28 @@ static struct snd_soc_dai_driver mt2701_afe_pcm_dais[] = {
 		.ops = &mt2701_afe_i2s_ops,
 		.symmetric_rates = 1,
 	},
+	{
+		.name = "MRG BT",
+		.id = MT2701_IO_MRG,
+		.playback = {
+			.stream_name = "BT Playback",
+			.channels_min = 1,
+			.channels_max = 1,
+			.rates = (SNDRV_PCM_RATE_8000
+				| SNDRV_PCM_RATE_16000),
+			.formats = SNDRV_PCM_FMTBIT_S16_LE,
+		},
+		.capture = {
+			.stream_name = "BT Capture",
+			.channels_min = 1,
+			.channels_max = 1,
+			.rates = (SNDRV_PCM_RATE_8000
+				| SNDRV_PCM_RATE_16000),
+			.formats = SNDRV_PCM_FMTBIT_S16_LE,
+		},
+		.ops = &mt2701_btmrg_ops,
+		.symmetric_rates = 1,
+	}
 };
 
 static const struct snd_kcontrol_new mt2701_afe_o00_mix[] = {
-- 
2.8.1

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