[PATCH 1/3] ASoC: cs35l35: Improve power down time

[PATCH 1/3] ASoC: cs35l35: Improve power down time

[Charles Keepax]

Shorten the time it takes to power down the amp by disabling the volume
ramp whilst doing the final shutdown. The driver has already muted the
amplifier at this stage so doing the volume ramp serves no purpose.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
---
 sound/soc/codecs/cs35l35.c | 8 ++++++++
 sound/soc/codecs/cs35l35.h | 3 +++
 2 files changed, 11 insertions(+)

diff --git a/sound/soc/codecs/cs35l35.c b/sound/soc/codecs/cs35l35.c
index 9688274..1db07a6 100644
--- a/sound/soc/codecs/cs35l35.c
+++ b/sound/soc/codecs/cs35l35.c
@@ -187,6 +187,10 @@ static int cs35l35_sdin_event(struct snd_soc_dapm_widget *w,
 		regmap_update_bits(cs35l35->regmap, CS35L35_PWRCTL1,
 					  CS35L35_PDN_ALL_MASK, 1);
 
+		/* Already muted, so disable volume ramp for faster shutdown */
+		regmap_update_bits(cs35l35->regmap, CS35L35_AMP_DIG_VOL_CTL,
+				   CS35L35_AMP_DIGSFT_MASK, 0);
+
 		reinit_completion(&cs35l35->pdn_done);
 
 		ret = wait_for_completion_timeout(&cs35l35->pdn_done,
@@ -199,6 +203,10 @@ static int cs35l35_sdin_event(struct snd_soc_dapm_widget *w,
 		regmap_update_bits(cs35l35->regmap, CS35L35_CLK_CTL1,
 					CS35L35_MCLK_DIS_MASK,
 					1 << CS35L35_MCLK_DIS_SHIFT);
+
+		regmap_update_bits(cs35l35->regmap, CS35L35_AMP_DIG_VOL_CTL,
+				   CS35L35_AMP_DIGSFT_MASK,
+				   1 << CS35L35_AMP_DIGSFT_SHIFT);
 		break;
 	default:
 		dev_err(codec->dev, "Invalid event = 0x%x\n", event);
diff --git a/sound/soc/codecs/cs35l35.h b/sound/soc/codecs/cs35l35.h
index 156d2f0..54e9ac5 100644
--- a/sound/soc/codecs/cs35l35.h
+++ b/sound/soc/codecs/cs35l35.h
@@ -190,6 +190,9 @@
 #define CS35L35_AMP_GAIN_ZC_MASK	0x10
 #define CS35L35_AMP_GAIN_ZC_SHIFT	4
 
+#define CS35L35_AMP_DIGSFT_MASK		0x02
+#define CS35L35_AMP_DIGSFT_SHIFT	1
+
 /* CS35L35_SP_FMT_CTL3 */
 #define CS35L35_SP_I2S_DRV_MASK		0x03
 #define CS35L35_SP_I2S_DRV_SHIFT	0
-- 
2.1.4

[PATCH 2/3] ASoC: cs35l35: Correct handling of PDN_DONE with external boost

[Charles Keepax]

When using an external boost supply the PDN_DONE bit is not set, update
the handling in this case to use to use an appropriate fixed delay.

Signed-off-by: Charles Keepax <ckeepax-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
---
 include/sound/cs35l35.h    |  2 ++
 sound/soc/codecs/cs35l35.c | 32 ++++++++++++++++++++++++--------
 2 files changed, 26 insertions(+), 8 deletions(-)

diff --git a/include/sound/cs35l35.h b/include/sound/cs35l35.h
index 983c610..88744bb 100644
--- a/include/sound/cs35l35.h
+++ b/include/sound/cs35l35.h
@@ -96,6 +96,8 @@ struct cs35l35_platform_data {
 	int adv_channel;
 	/* Shared Boost for stereo */
 	bool shared_bst;
+	/* Specifies this amp is using an external boost supply */
+	bool ext_bst;
 	/* ClassH Algorithm */
 	struct classh_cfg classh_algo;
 	/* Monitor Config */
diff --git a/sound/soc/codecs/cs35l35.c b/sound/soc/codecs/cs35l35.c
index 1db07a6..6ecb7dd 100644
--- a/sound/soc/codecs/cs35l35.c
+++ b/sound/soc/codecs/cs35l35.c
@@ -162,6 +162,27 @@ static bool cs35l35_precious_register(struct device *dev, unsigned int reg)
 	}
 }
 
+static int cs35l35_wait_for_pdn(struct cs35l35_private *cs35l35)
+{
+	int ret;
+
+	if (cs35l35->pdata.ext_bst) {
+		usleep_range(5000, 5500);
+		return 0;
+	}
+
+	reinit_completion(&cs35l35->pdn_done);
+
+	ret = wait_for_completion_timeout(&cs35l35->pdn_done,
+					  msecs_to_jiffies(100));
+	if (ret == 0) {
+		dev_err(cs35l35->dev, "PDN_DONE did not complete\n");
+		return -ETIMEDOUT;
+	}
+
+	return 0;
+}
+
 static int cs35l35_sdin_event(struct snd_soc_dapm_widget *w,
 		struct snd_kcontrol *kcontrol, int event)
 {
@@ -191,14 +212,7 @@ static int cs35l35_sdin_event(struct snd_soc_dapm_widget *w,
 		regmap_update_bits(cs35l35->regmap, CS35L35_AMP_DIG_VOL_CTL,
 				   CS35L35_AMP_DIGSFT_MASK, 0);
 
-		reinit_completion(&cs35l35->pdn_done);
-
-		ret = wait_for_completion_timeout(&cs35l35->pdn_done,
-							msecs_to_jiffies(100));
-		if (ret == 0) {
-			dev_err(codec->dev, "TIMEOUT PDN_DONE did not complete in 100ms\n");
-			ret = -ETIMEDOUT;
-		}
+		ret = cs35l35_wait_for_pdn(cs35l35);
 
 		regmap_update_bits(cs35l35->regmap, CS35L35_CLK_CTL1,
 					CS35L35_MCLK_DIS_MASK,
@@ -1198,6 +1212,8 @@ static int cs35l35_handle_of_data(struct i2c_client *i2c_client,
 						"cirrus,shared-boost");
 	}
 
+	pdata->ext_bst = of_property_read_bool(np, "cirrus,external-boost");
+
 	pdata->gain_zc = of_property_read_bool(np, "cirrus,amp-gain-zc");
 
 	classh = of_get_child_by_name(np, "cirrus,classh-internal-algo");
-- 
2.1.4

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[PATCH 3/3] ASoC: cs35l35: Add DT binding to specify usage of an external boost supply

[Charles Keepax]

Add a device tree binding to let the driver know that the amplifier is
configured to use an external boost supply.

Signed-off-by: Charles Keepax <ckeepax-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
---
 Documentation/devicetree/bindings/sound/cs35l35.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/cs35l35.txt b/Documentation/devicetree/bindings/sound/cs35l35.txt
index 958f0ea..457d176 100644
--- a/Documentation/devicetree/bindings/sound/cs35l35.txt
+++ b/Documentation/devicetree/bindings/sound/cs35l35.txt
@@ -33,6 +33,10 @@ Optional properties:
   - cirrus,shared-boost : Boolean to enable ClassH tracking of Advisory Signal
   if 2 Devices share Boost BST_CTL
 
+  - cirrus,external-boost : Boolean to specify the device is using an external
+  boost supply, note that sharing a boost from another cs35l35 would constitute
+  using an external supply for the slave device
+
   - cirrus,sp-drv-strength : Value for setting the Serial Port drive strength
   Table 3-10 of the datasheet lists drive-strength specifications
   0 = 1x (Default)
-- 
2.1.4

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Re: [PATCH 1/3] ASoC: cs35l35: Improve power down time

[Brian Austin]

On Thu, 6 Apr 2017, Charles Keepax wrote:

> Shorten the time it takes to power down the amp by disabling the volume
> ramp whilst doing the final shutdown. The driver has already muted the
> amplifier at this stage so doing the volume ramp serves no purpose.
> 
> Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
For the series

Acked-by: Brian Austin <brian.austin@cirrus.com>

Applied "ASoC: cs35l35: Add DT binding to specify usage of an external boost supply" to the asoc tree

[Mark Brown]

The patch

   ASoC: cs35l35: Add DT binding to specify usage of an external boost supply

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 0c67fb5544061cb990e07a73e1b7ba1f8ca22479 Mon Sep 17 00:00:00 2001
From: Charles Keepax <ckeepax-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
Date: Thu, 6 Apr 2017 13:52:14 +0100
Subject: [PATCH] ASoC: cs35l35: Add DT binding to specify usage of an external
 boost supply

Add a device tree binding to let the driver know that the amplifier is
configured to use an external boost supply.

Signed-off-by: Charles Keepax <ckeepax-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
Acked-by: Brian Austin <brian.austin-jGc1dHjMKG3QT0dZR+AlfA@public.gmane.org>
Signed-off-by: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
---
 Documentation/devicetree/bindings/sound/cs35l35.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/cs35l35.txt b/Documentation/devicetree/bindings/sound/cs35l35.txt
index 958f0eabfdfc..457d176dcee0 100644
--- a/Documentation/devicetree/bindings/sound/cs35l35.txt
+++ b/Documentation/devicetree/bindings/sound/cs35l35.txt
@@ -33,6 +33,10 @@ Optional properties:
   - cirrus,shared-boost : Boolean to enable ClassH tracking of Advisory Signal
   if 2 Devices share Boost BST_CTL
 
+  - cirrus,external-boost : Boolean to specify the device is using an external
+  boost supply, note that sharing a boost from another cs35l35 would constitute
+  using an external supply for the slave device
+
   - cirrus,sp-drv-strength : Value for setting the Serial Port drive strength
   Table 3-10 of the datasheet lists drive-strength specifications
   0 = 1x (Default)
-- 
2.11.0

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Applied "ASoC: cs35l35: Correct handling of PDN_DONE with external boost" to the asoc tree

[Mark Brown]

The patch

   ASoC: cs35l35: Correct handling of PDN_DONE with external boost

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 77b329d1943d38a5acdbaf9d57754975bce701d4 Mon Sep 17 00:00:00 2001
From: Charles Keepax <ckeepax-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
Date: Thu, 6 Apr 2017 13:52:13 +0100
Subject: [PATCH] ASoC: cs35l35: Correct handling of PDN_DONE with external
 boost

When using an external boost supply the PDN_DONE bit is not set, update
the handling in this case to use to use an appropriate fixed delay.

Signed-off-by: Charles Keepax <ckeepax-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
Acked-by: Brian Austin <brian.austin-jGc1dHjMKG3QT0dZR+AlfA@public.gmane.org>
Signed-off-by: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
---
 include/sound/cs35l35.h    |  2 ++
 sound/soc/codecs/cs35l35.c | 32 ++++++++++++++++++++++++--------
 2 files changed, 26 insertions(+), 8 deletions(-)

diff --git a/include/sound/cs35l35.h b/include/sound/cs35l35.h
index 983c610eba2e..88744bbd6728 100644
--- a/include/sound/cs35l35.h
+++ b/include/sound/cs35l35.h
@@ -96,6 +96,8 @@ struct cs35l35_platform_data {
 	int adv_channel;
 	/* Shared Boost for stereo */
 	bool shared_bst;
+	/* Specifies this amp is using an external boost supply */
+	bool ext_bst;
 	/* ClassH Algorithm */
 	struct classh_cfg classh_algo;
 	/* Monitor Config */
diff --git a/sound/soc/codecs/cs35l35.c b/sound/soc/codecs/cs35l35.c
index 1db07a6296a4..6ecb7ddae9cf 100644
--- a/sound/soc/codecs/cs35l35.c
+++ b/sound/soc/codecs/cs35l35.c
@@ -162,6 +162,27 @@ static bool cs35l35_precious_register(struct device *dev, unsigned int reg)
 	}
 }
 
+static int cs35l35_wait_for_pdn(struct cs35l35_private *cs35l35)
+{
+	int ret;
+
+	if (cs35l35->pdata.ext_bst) {
+		usleep_range(5000, 5500);
+		return 0;
+	}
+
+	reinit_completion(&cs35l35->pdn_done);
+
+	ret = wait_for_completion_timeout(&cs35l35->pdn_done,
+					  msecs_to_jiffies(100));
+	if (ret == 0) {
+		dev_err(cs35l35->dev, "PDN_DONE did not complete\n");
+		return -ETIMEDOUT;
+	}
+
+	return 0;
+}
+
 static int cs35l35_sdin_event(struct snd_soc_dapm_widget *w,
 		struct snd_kcontrol *kcontrol, int event)
 {
@@ -191,14 +212,7 @@ static int cs35l35_sdin_event(struct snd_soc_dapm_widget *w,
 		regmap_update_bits(cs35l35->regmap, CS35L35_AMP_DIG_VOL_CTL,
 				   CS35L35_AMP_DIGSFT_MASK, 0);
 
-		reinit_completion(&cs35l35->pdn_done);
-
-		ret = wait_for_completion_timeout(&cs35l35->pdn_done,
-							msecs_to_jiffies(100));
-		if (ret == 0) {
-			dev_err(codec->dev, "TIMEOUT PDN_DONE did not complete in 100ms\n");
-			ret = -ETIMEDOUT;
-		}
+		ret = cs35l35_wait_for_pdn(cs35l35);
 
 		regmap_update_bits(cs35l35->regmap, CS35L35_CLK_CTL1,
 					CS35L35_MCLK_DIS_MASK,
@@ -1198,6 +1212,8 @@ static int cs35l35_handle_of_data(struct i2c_client *i2c_client,
 						"cirrus,shared-boost");
 	}
 
+	pdata->ext_bst = of_property_read_bool(np, "cirrus,external-boost");
+
 	pdata->gain_zc = of_property_read_bool(np, "cirrus,amp-gain-zc");
 
 	classh = of_get_child_by_name(np, "cirrus,classh-internal-algo");
-- 
2.11.0

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Applied "ASoC: cs35l35: Improve power down time" to the asoc tree

[Mark Brown]

The patch

   ASoC: cs35l35: Improve power down time

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 2c84afb52ebea59e9862fcb8234126b7ae1d1960 Mon Sep 17 00:00:00 2001
From: Charles Keepax <ckeepax-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
Date: Thu, 6 Apr 2017 13:52:12 +0100
Subject: [PATCH] ASoC: cs35l35: Improve power down time

Shorten the time it takes to power down the amp by disabling the volume
ramp whilst doing the final shutdown. The driver has already muted the
amplifier at this stage so doing the volume ramp serves no purpose.

Signed-off-by: Charles Keepax <ckeepax-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
Acked-by: Brian Austin <brian.austin-jGc1dHjMKG3QT0dZR+AlfA@public.gmane.org>
Signed-off-by: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
---
 sound/soc/codecs/cs35l35.c | 8 ++++++++
 sound/soc/codecs/cs35l35.h | 3 +++
 2 files changed, 11 insertions(+)

diff --git a/sound/soc/codecs/cs35l35.c b/sound/soc/codecs/cs35l35.c
index 9688274f7c90..1db07a6296a4 100644
--- a/sound/soc/codecs/cs35l35.c
+++ b/sound/soc/codecs/cs35l35.c
@@ -187,6 +187,10 @@ static int cs35l35_sdin_event(struct snd_soc_dapm_widget *w,
 		regmap_update_bits(cs35l35->regmap, CS35L35_PWRCTL1,
 					  CS35L35_PDN_ALL_MASK, 1);
 
+		/* Already muted, so disable volume ramp for faster shutdown */
+		regmap_update_bits(cs35l35->regmap, CS35L35_AMP_DIG_VOL_CTL,
+				   CS35L35_AMP_DIGSFT_MASK, 0);
+
 		reinit_completion(&cs35l35->pdn_done);
 
 		ret = wait_for_completion_timeout(&cs35l35->pdn_done,
@@ -199,6 +203,10 @@ static int cs35l35_sdin_event(struct snd_soc_dapm_widget *w,
 		regmap_update_bits(cs35l35->regmap, CS35L35_CLK_CTL1,
 					CS35L35_MCLK_DIS_MASK,
 					1 << CS35L35_MCLK_DIS_SHIFT);
+
+		regmap_update_bits(cs35l35->regmap, CS35L35_AMP_DIG_VOL_CTL,
+				   CS35L35_AMP_DIGSFT_MASK,
+				   1 << CS35L35_AMP_DIGSFT_SHIFT);
 		break;
 	default:
 		dev_err(codec->dev, "Invalid event = 0x%x\n", event);
diff --git a/sound/soc/codecs/cs35l35.h b/sound/soc/codecs/cs35l35.h
index 156d2f0e6fd8..54e9ac536b20 100644
--- a/sound/soc/codecs/cs35l35.h
+++ b/sound/soc/codecs/cs35l35.h
@@ -190,6 +190,9 @@
 #define CS35L35_AMP_GAIN_ZC_MASK	0x10
 #define CS35L35_AMP_GAIN_ZC_SHIFT	4
 
+#define CS35L35_AMP_DIGSFT_MASK		0x02
+#define CS35L35_AMP_DIGSFT_SHIFT	1
+
 /* CS35L35_SP_FMT_CTL3 */
 #define CS35L35_SP_I2S_DRV_MASK		0x03
 #define CS35L35_SP_I2S_DRV_SHIFT	0
-- 
2.11.0

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