[alsa-devel] [PATCH 0/2] Add support for select accessory detect mode to HPDETL or HPDETR

[alsa-devel] [PATCH 0/2] Add support for select accessory detect mode to HPDETL or HPDETR

[Inha Song]

This set of patches adds support for select accessory detect mode to HPDETL or HPDETR.

Inha Song (2):
  extcon: arizona: Add support for select accessory detect mode when
    headphone detection"
  mfd: arizona: Update DT binding to support hpdet channel

 Documentation/devicetree/bindings/mfd/arizona.txt |  4 +++
 drivers/extcon/extcon-arizona.c                   | 34 ++++++++++++++++++++---
 include/linux/mfd/arizona/pdata.h                 |  3 ++
 3 files changed, 37 insertions(+), 4 deletions(-)

-- 
2.0.0.390.gcb682f8

[PATCH 0/2] Add support for select accessory detect mode to HPDETL or HPDETR

[Inha Song]

This set of patches adds support for select accessory detect mode to HPDETL or HPDETR.

Inha Song (2):
  extcon: arizona: Add support for select accessory detect mode when
    headphone detection"
  mfd: arizona: Update DT binding to support hpdet channel

 Documentation/devicetree/bindings/mfd/arizona.txt |  4 +++
 drivers/extcon/extcon-arizona.c                   | 34 ++++++++++++++++++++---
 include/linux/mfd/arizona/pdata.h                 |  3 ++
 3 files changed, 37 insertions(+), 4 deletions(-)

-- 
2.0.0.390.gcb682f8

[alsa-devel] [PATCH 1/2] extcon: arizona: Add support for select accessory detect mode when headphone detection"

[Inha Song]

This patch add support for select accessory detect mode to HPDETL or HPDETR.
Arizona provides a headphone detection circuit on the HPDETL and HPDETR pins
to measure the impedance of an external load connected to the headphone.

Depending on board design, headphone detect pins can change to HPDETR or HPDETL.

Signed-off-by: Inha Song <ideal.song@samsung.com>
---
 drivers/extcon/extcon-arizona.c   | 34 ++++++++++++++++++++++++++++++----
 include/linux/mfd/arizona/pdata.h |  3 +++
 2 files changed, 33 insertions(+), 4 deletions(-)

diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index 63f01c4..7bc9159 100644
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -95,6 +95,7 @@ struct arizona_extcon_info {
 	int jack_flips;
 
 	int hpdet_ip;
+	int hpdet_channel;
 
 	struct extcon_dev *edev;
 };
@@ -653,9 +654,9 @@ static void arizona_identify_headphone(struct arizona_extcon_info *info)
 	ret = regmap_update_bits(arizona->regmap,
 				 ARIZONA_ACCESSORY_DETECT_MODE_1,
 				 ARIZONA_ACCDET_MODE_MASK,
-				 ARIZONA_ACCDET_MODE_HPL);
+				 info->hpdet_channel);
 	if (ret != 0) {
-		dev_err(arizona->dev, "Failed to set HPDETL mode: %d\n", ret);
+		dev_err(arizona->dev, "Failed to set HPDET mode: %d\n", ret);
 		goto err;
 	}
 
@@ -705,9 +706,9 @@ static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info)
 				 ARIZONA_ACCESSORY_DETECT_MODE_1,
 				 ARIZONA_ACCDET_SRC | ARIZONA_ACCDET_MODE_MASK,
 				 info->micd_modes[0].src |
-				 ARIZONA_ACCDET_MODE_HPL);
+				 info->hpdet_channel);
 	if (ret != 0) {
-		dev_err(arizona->dev, "Failed to set HPDETL mode: %d\n", ret);
+		dev_err(arizona->dev, "Failed to set HPDET mode: %d\n", ret);
 		goto err;
 	}
 
@@ -1103,6 +1104,23 @@ static void arizona_micd_set_level(struct arizona *arizona, int index,
 	regmap_update_bits(arizona->regmap, reg, mask, level);
 }
 
+#ifdef CONFIG_OF
+static int arizona_of_get_extcon_pdata(struct arizona *arizona)
+{
+	struct arizona_pdata *pdata = &arizona->pdata;
+
+	of_property_read_u32(arizona->dev->of_node, "wlf,hpdet-channel",
+			     &pdata->hpdet_channel);
+
+	return 0;
+}
+#else
+static inline int arizona_of_get_extcon_pdata(struct arizona *arizona)
+{
+	return 0;
+}
+#endif
+
 static int arizona_extcon_probe(struct platform_device *pdev)
 {
 	struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
@@ -1120,6 +1138,9 @@ static int arizona_extcon_probe(struct platform_device *pdev)
 	if (!info)
 		return -ENOMEM;
 
+	if (!dev_get_platdata(arizona->dev))
+		arizona_of_get_extcon_pdata(arizona);
+
 	info->micvdd = devm_regulator_get(&pdev->dev, "MICVDD");
 	if (IS_ERR(info->micvdd)) {
 		ret = PTR_ERR(info->micvdd);
@@ -1338,6 +1359,11 @@ static int arizona_extcon_probe(struct platform_device *pdev)
 
 	arizona_extcon_set_mode(info, 0);
 
+	if (arizona->pdata.hpdet_channel)
+		info->hpdet_channel = ARIZONA_ACCDET_MODE_HPR;
+	else
+		info->hpdet_channel = ARIZONA_ACCDET_MODE_HPL;
+
 	pm_runtime_enable(&pdev->dev);
 	pm_runtime_idle(&pdev->dev);
 	pm_runtime_get_sync(&pdev->dev);
diff --git a/include/linux/mfd/arizona/pdata.h b/include/linux/mfd/arizona/pdata.h
index 4578c72..feb5903 100644
--- a/include/linux/mfd/arizona/pdata.h
+++ b/include/linux/mfd/arizona/pdata.h
@@ -139,6 +139,9 @@ struct arizona_pdata {
 	/** GPIO used for mic isolation with HPDET */
 	int hpdet_id_gpio;
 
+	/** Channel to use for headphone detection */
+	int hpdet_channel;
+
 	/** Extra debounce timeout used during initial mic detection (ms) */
 	int micd_detect_debounce;
 
-- 
2.0.0.390.gcb682f8

[alsa-devel] [PATCH 2/2] mfd: arizona: Update DT binding to support hpdet channel

[Inha Song]

This patch add device tree bindings for the pdata needed to configure
the Accessory Detect Mode select when Headphone detection.

Signed-off-by: Inha Song <ideal.song@samsung.com>
---
 Documentation/devicetree/bindings/mfd/arizona.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/arizona.txt b/Documentation/devicetree/bindings/mfd/arizona.txt
index 7bd1273..e7cb939 100644
--- a/Documentation/devicetree/bindings/mfd/arizona.txt
+++ b/Documentation/devicetree/bindings/mfd/arizona.txt
@@ -49,6 +49,10 @@ Optional properties:
     input singals. If values less than the number of input signals, elements
     that has not been specifed are set to 0 by default.
 
+  - wlf,hpdet-channel : Headphone detection channel, this filed to be used the
+    ACCDET_MODE bits in the ACCESSORY_DETECT_MODE_1 register. The valid values
+    are 0 for HPDETL and 1 for HPDETR.
+
   - DCVDD-supply, MICVDD-supply : Power supplies, only need to be specified if
     they are being externally supplied. As covered in
     Documentation/devicetree/bindings/regulator/regulator.txt
-- 
2.0.0.390.gcb682f8

Re: [alsa-devel] [PATCH 1/2] extcon: arizona: Add support for select accessory detect mode when headphone detection"

[Charles Keepax]

On Fri, Apr 17, 2015 at 05:32:58PM +0900, Inha Song wrote:
> This patch add support for select accessory detect mode to HPDETL or HPDETR.
> Arizona provides a headphone detection circuit on the HPDETL and HPDETR pins
> to measure the impedance of an external load connected to the headphone.
> 
> Depending on board design, headphone detect pins can change to HPDETR or HPDETL.
> 
> Signed-off-by: Inha Song <ideal.song@samsung.com>
> ---
>  drivers/extcon/extcon-arizona.c   | 34 ++++++++++++++++++++++++++++++----
>  include/linux/mfd/arizona/pdata.h |  3 +++
>  2 files changed, 33 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
> index 63f01c4..7bc9159 100644
> --- a/drivers/extcon/extcon-arizona.c
> +++ b/drivers/extcon/extcon-arizona.c
> @@ -95,6 +95,7 @@ struct arizona_extcon_info {
>  	int jack_flips;
>  
>  	int hpdet_ip;
> +	int hpdet_channel;

Don't really think this is necessary we can just use the pdata
value where required doesn't add much copying it to extcon_info.

>  
>  	struct extcon_dev *edev;
>  };
> @@ -653,9 +654,9 @@ static void arizona_identify_headphone(struct arizona_extcon_info *info)
>  	ret = regmap_update_bits(arizona->regmap,
>  				 ARIZONA_ACCESSORY_DETECT_MODE_1,
>  				 ARIZONA_ACCDET_MODE_MASK,
> -				 ARIZONA_ACCDET_MODE_HPL);
> +				 info->hpdet_channel);
>  	if (ret != 0) {
> -		dev_err(arizona->dev, "Failed to set HPDETL mode: %d\n", ret);
> +		dev_err(arizona->dev, "Failed to set HPDET mode: %d\n", ret);
>  		goto err;
>  	}
>  
> @@ -705,9 +706,9 @@ static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info)
>  				 ARIZONA_ACCESSORY_DETECT_MODE_1,
>  				 ARIZONA_ACCDET_SRC | ARIZONA_ACCDET_MODE_MASK,
>  				 info->micd_modes[0].src |
> -				 ARIZONA_ACCDET_MODE_HPL);
> +				 info->hpdet_channel);
>  	if (ret != 0) {
> -		dev_err(arizona->dev, "Failed to set HPDETL mode: %d\n", ret);
> +		dev_err(arizona->dev, "Failed to set HPDET mode: %d\n", ret);
>  		goto err;
>  	}
>  
> @@ -1103,6 +1104,23 @@ static void arizona_micd_set_level(struct arizona *arizona, int index,
>  	regmap_update_bits(arizona->regmap, reg, mask, level);
>  }
>  
> +#ifdef CONFIG_OF
> +static int arizona_of_get_extcon_pdata(struct arizona *arizona)
> +{
> +	struct arizona_pdata *pdata = &arizona->pdata;
> +
> +	of_property_read_u32(arizona->dev->of_node, "wlf,hpdet-channel",
> +			     &pdata->hpdet_channel);
> +
> +	return 0;
> +}
> +#else
> +static inline int arizona_of_get_extcon_pdata(struct arizona *arizona)
> +{
> +	return 0;
> +}
> +#endif
> +

I believe it is preferred to leave this as not ifdef'ed...

>  static int arizona_extcon_probe(struct platform_device *pdev)
>  {
>  	struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
> @@ -1120,6 +1138,9 @@ static int arizona_extcon_probe(struct platform_device *pdev)
>  	if (!info)
>  		return -ENOMEM;
>  
> +	if (!dev_get_platdata(arizona->dev))
> +		arizona_of_get_extcon_pdata(arizona);

And to wrap this in an if (IS_ENABLED(CONFIG_OF)).

> +
>  	info->micvdd = devm_regulator_get(&pdev->dev, "MICVDD");
>  	if (IS_ERR(info->micvdd)) {
>  		ret = PTR_ERR(info->micvdd);
> @@ -1338,6 +1359,11 @@ static int arizona_extcon_probe(struct platform_device *pdev)
>  
>  	arizona_extcon_set_mode(info, 0);
>  
> +	if (arizona->pdata.hpdet_channel)
> +		info->hpdet_channel = ARIZONA_ACCDET_MODE_HPR;
> +	else
> +		info->hpdet_channel = ARIZONA_ACCDET_MODE_HPL;
> +

Just move the two defines in include/dt-bindings/mfd/arizona.h
and have the pdata get set directly to one of the values.

>  	pm_runtime_enable(&pdev->dev);
>  	pm_runtime_idle(&pdev->dev);
>  	pm_runtime_get_sync(&pdev->dev);
> diff --git a/include/linux/mfd/arizona/pdata.h b/include/linux/mfd/arizona/pdata.h
> index 4578c72..feb5903 100644
> --- a/include/linux/mfd/arizona/pdata.h
> +++ b/include/linux/mfd/arizona/pdata.h
> @@ -139,6 +139,9 @@ struct arizona_pdata {
>  	/** GPIO used for mic isolation with HPDET */
>  	int hpdet_id_gpio;
>  
> +	/** Channel to use for headphone detection */
> +	int hpdet_channel;

Lets use and unsigned here, we don't need it to be signed and it
saves type issues with read_u32.

> +
>  	/** Extra debounce timeout used during initial mic detection (ms) */
>  	int micd_detect_debounce;
>  
> -- 
> 2.0.0.390.gcb682f8
> 

Thanks,
Charles

Re: [alsa-devel] [PATCH 1/2] extcon: arizona: Add support for select accessory detect mode when headphone detection"

[Charles Keepax]

On Fri, Apr 17, 2015 at 05:32:58PM +0900, Inha Song wrote:
> This patch add support for select accessory detect mode to HPDETL or HPDETR.
> Arizona provides a headphone detection circuit on the HPDETL and HPDETR pins
> to measure the impedance of an external load connected to the headphone.
> 
> Depending on board design, headphone detect pins can change to HPDETR or HPDETL.
> 
> Signed-off-by: Inha Song <ideal.song-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
> ---
>  drivers/extcon/extcon-arizona.c   | 34 ++++++++++++++++++++++++++++++----
>  include/linux/mfd/arizona/pdata.h |  3 +++
>  2 files changed, 33 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
> index 63f01c4..7bc9159 100644
> --- a/drivers/extcon/extcon-arizona.c
> +++ b/drivers/extcon/extcon-arizona.c
> @@ -95,6 +95,7 @@ struct arizona_extcon_info {
>  	int jack_flips;
>  
>  	int hpdet_ip;
> +	int hpdet_channel;

Don't really think this is necessary we can just use the pdata
value where required doesn't add much copying it to extcon_info.

>  
>  	struct extcon_dev *edev;
>  };
> @@ -653,9 +654,9 @@ static void arizona_identify_headphone(struct arizona_extcon_info *info)
>  	ret = regmap_update_bits(arizona->regmap,
>  				 ARIZONA_ACCESSORY_DETECT_MODE_1,
>  				 ARIZONA_ACCDET_MODE_MASK,
> -				 ARIZONA_ACCDET_MODE_HPL);
> +				 info->hpdet_channel);
>  	if (ret != 0) {
> -		dev_err(arizona->dev, "Failed to set HPDETL mode: %d\n", ret);
> +		dev_err(arizona->dev, "Failed to set HPDET mode: %d\n", ret);
>  		goto err;
>  	}
>  
> @@ -705,9 +706,9 @@ static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info)
>  				 ARIZONA_ACCESSORY_DETECT_MODE_1,
>  				 ARIZONA_ACCDET_SRC | ARIZONA_ACCDET_MODE_MASK,
>  				 info->micd_modes[0].src |
> -				 ARIZONA_ACCDET_MODE_HPL);
> +				 info->hpdet_channel);
>  	if (ret != 0) {
> -		dev_err(arizona->dev, "Failed to set HPDETL mode: %d\n", ret);
> +		dev_err(arizona->dev, "Failed to set HPDET mode: %d\n", ret);
>  		goto err;
>  	}
>  
> @@ -1103,6 +1104,23 @@ static void arizona_micd_set_level(struct arizona *arizona, int index,
>  	regmap_update_bits(arizona->regmap, reg, mask, level);
>  }
>  
> +#ifdef CONFIG_OF
> +static int arizona_of_get_extcon_pdata(struct arizona *arizona)
> +{
> +	struct arizona_pdata *pdata = &arizona->pdata;
> +
> +	of_property_read_u32(arizona->dev->of_node, "wlf,hpdet-channel",
> +			     &pdata->hpdet_channel);
> +
> +	return 0;
> +}
> +#else
> +static inline int arizona_of_get_extcon_pdata(struct arizona *arizona)
> +{
> +	return 0;
> +}
> +#endif
> +

I believe it is preferred to leave this as not ifdef'ed...

>  static int arizona_extcon_probe(struct platform_device *pdev)
>  {
>  	struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
> @@ -1120,6 +1138,9 @@ static int arizona_extcon_probe(struct platform_device *pdev)
>  	if (!info)
>  		return -ENOMEM;
>  
> +	if (!dev_get_platdata(arizona->dev))
> +		arizona_of_get_extcon_pdata(arizona);

And to wrap this in an if (IS_ENABLED(CONFIG_OF)).

> +
>  	info->micvdd = devm_regulator_get(&pdev->dev, "MICVDD");
>  	if (IS_ERR(info->micvdd)) {
>  		ret = PTR_ERR(info->micvdd);
> @@ -1338,6 +1359,11 @@ static int arizona_extcon_probe(struct platform_device *pdev)
>  
>  	arizona_extcon_set_mode(info, 0);
>  
> +	if (arizona->pdata.hpdet_channel)
> +		info->hpdet_channel = ARIZONA_ACCDET_MODE_HPR;
> +	else
> +		info->hpdet_channel = ARIZONA_ACCDET_MODE_HPL;
> +

Just move the two defines in include/dt-bindings/mfd/arizona.h
and have the pdata get set directly to one of the values.

>  	pm_runtime_enable(&pdev->dev);
>  	pm_runtime_idle(&pdev->dev);
>  	pm_runtime_get_sync(&pdev->dev);
> diff --git a/include/linux/mfd/arizona/pdata.h b/include/linux/mfd/arizona/pdata.h
> index 4578c72..feb5903 100644
> --- a/include/linux/mfd/arizona/pdata.h
> +++ b/include/linux/mfd/arizona/pdata.h
> @@ -139,6 +139,9 @@ struct arizona_pdata {
>  	/** GPIO used for mic isolation with HPDET */
>  	int hpdet_id_gpio;
>  
> +	/** Channel to use for headphone detection */
> +	int hpdet_channel;

Lets use and unsigned here, we don't need it to be signed and it
saves type issues with read_u32.

> +
>  	/** Extra debounce timeout used during initial mic detection (ms) */
>  	int micd_detect_debounce;
>  
> -- 
> 2.0.0.390.gcb682f8
> 

Thanks,
Charles
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Re: [alsa-devel] [PATCH 2/2] mfd: arizona: Update DT binding to support hpdet channel

[Charles Keepax]

On Fri, Apr 17, 2015 at 05:32:59PM +0900, Inha Song wrote:
> This patch add device tree bindings for the pdata needed to configure
> the Accessory Detect Mode select when Headphone detection.
> 
> Signed-off-by: Inha Song <ideal.song@samsung.com>
> ---
>  Documentation/devicetree/bindings/mfd/arizona.txt | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/mfd/arizona.txt b/Documentation/devicetree/bindings/mfd/arizona.txt
> index 7bd1273..e7cb939 100644
> --- a/Documentation/devicetree/bindings/mfd/arizona.txt
> +++ b/Documentation/devicetree/bindings/mfd/arizona.txt
> @@ -49,6 +49,10 @@ Optional properties:
>      input singals. If values less than the number of input signals, elements
>      that has not been specifed are set to 0 by default.
>  
> +  - wlf,hpdet-channel : Headphone detection channel, this filed to be used the
> +    ACCDET_MODE bits in the ACCESSORY_DETECT_MODE_1 register. The valid values
> +    are 0 for HPDETL and 1 for HPDETR.

Lets remove the references to the register bits this tends to add some
confusion to the binding doc review and update to mention the
defines I suggested adding in the other patch.

Thanks,
Charles

> +
>    - DCVDD-supply, MICVDD-supply : Power supplies, only need to be specified if
>      they are being externally supplied. As covered in
>      Documentation/devicetree/bindings/regulator/regulator.txt
> -- 
> 2.0.0.390.gcb682f8
> 

Re: [alsa-devel] [PATCH 2/2] mfd: arizona: Update DT binding to support hpdet channel

[Charles Keepax]

On Fri, Apr 17, 2015 at 05:32:59PM +0900, Inha Song wrote:
> This patch add device tree bindings for the pdata needed to configure
> the Accessory Detect Mode select when Headphone detection.
> 
> Signed-off-by: Inha Song <ideal.song-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
> ---
>  Documentation/devicetree/bindings/mfd/arizona.txt | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/mfd/arizona.txt b/Documentation/devicetree/bindings/mfd/arizona.txt
> index 7bd1273..e7cb939 100644
> --- a/Documentation/devicetree/bindings/mfd/arizona.txt
> +++ b/Documentation/devicetree/bindings/mfd/arizona.txt
> @@ -49,6 +49,10 @@ Optional properties:
>      input singals. If values less than the number of input signals, elements
>      that has not been specifed are set to 0 by default.
>  
> +  - wlf,hpdet-channel : Headphone detection channel, this filed to be used the
> +    ACCDET_MODE bits in the ACCESSORY_DETECT_MODE_1 register. The valid values
> +    are 0 for HPDETL and 1 for HPDETR.

Lets remove the references to the register bits this tends to add some
confusion to the binding doc review and update to mention the
defines I suggested adding in the other patch.

Thanks,
Charles

> +
>    - DCVDD-supply, MICVDD-supply : Power supplies, only need to be specified if
>      they are being externally supplied. As covered in
>      Documentation/devicetree/bindings/regulator/regulator.txt
> -- 
> 2.0.0.390.gcb682f8
> 
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Re: [alsa-devel] [PATCH 1/2] extcon: arizona: Add support for select accessory detect mode when headphone detection"

[Charles Keepax]

On Fri, Apr 17, 2015 at 05:32:58PM +0900, Inha Song wrote:
> This patch add support for select accessory detect mode to HPDETL or HPDETR.
> Arizona provides a headphone detection circuit on the HPDETL and HPDETR pins
> to measure the impedance of an external load connected to the headphone.
> 
> Depending on board design, headphone detect pins can change to HPDETR or HPDETL.
> 
> Signed-off-by: Inha Song <ideal.song@samsung.com>
> ---
>  drivers/extcon/extcon-arizona.c   | 34 ++++++++++++++++++++++++++++++----
>  include/linux/mfd/arizona/pdata.h |  3 +++
>  2 files changed, 33 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
> index 63f01c4..7bc9159 100644
> --- a/drivers/extcon/extcon-arizona.c
>  
> +#ifdef CONFIG_OF
> +static int arizona_of_get_extcon_pdata(struct arizona *arizona)
> +{
> +	struct arizona_pdata *pdata = &arizona->pdata;
> +
> +	of_property_read_u32(arizona->dev->of_node, "wlf,hpdet-channel",
> +			     &pdata->hpdet_channel);
> +
> +	return 0;
> +}
> +#else
> +static inline int arizona_of_get_extcon_pdata(struct arizona *arizona)
> +{
> +	return 0;
> +}
> +#endif

Oh and one other comment can we rename this functions to
arizona_extcon_of_get_pdata.

Thanks,
Charles

Re: [alsa-devel] [PATCH 1/2] extcon: arizona: Add support for select accessory detect mode when headphone detection"

[Charles Keepax]

On Fri, Apr 17, 2015 at 05:32:58PM +0900, Inha Song wrote:
> This patch add support for select accessory detect mode to HPDETL or HPDETR.
> Arizona provides a headphone detection circuit on the HPDETL and HPDETR pins
> to measure the impedance of an external load connected to the headphone.
> 
> Depending on board design, headphone detect pins can change to HPDETR or HPDETL.
> 
> Signed-off-by: Inha Song <ideal.song-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
> ---
>  drivers/extcon/extcon-arizona.c   | 34 ++++++++++++++++++++++++++++++----
>  include/linux/mfd/arizona/pdata.h |  3 +++
>  2 files changed, 33 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
> index 63f01c4..7bc9159 100644
> --- a/drivers/extcon/extcon-arizona.c
>  
> +#ifdef CONFIG_OF
> +static int arizona_of_get_extcon_pdata(struct arizona *arizona)
> +{
> +	struct arizona_pdata *pdata = &arizona->pdata;
> +
> +	of_property_read_u32(arizona->dev->of_node, "wlf,hpdet-channel",
> +			     &pdata->hpdet_channel);
> +
> +	return 0;
> +}
> +#else
> +static inline int arizona_of_get_extcon_pdata(struct arizona *arizona)
> +{
> +	return 0;
> +}
> +#endif

Oh and one other comment can we rename this functions to
arizona_extcon_of_get_pdata.

Thanks,
Charles
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Re: [alsa-devel] [PATCH 1/2] extcon: arizona: Add support for select accessory detect mode when headphone detection"

[Inha Song]

Hi,

Thanks for your comments,


On Fri, 17 Apr 2015 10:00:47 +0100
Charles Keepax <ckeepax@opensource.wolfsonmicro.com> wrote:

> On Fri, Apr 17, 2015 at 05:32:58PM +0900, Inha Song wrote:
> > This patch add support for select accessory detect mode to HPDETL or HPDETR.
> > Arizona provides a headphone detection circuit on the HPDETL and HPDETR pins
> > to measure the impedance of an external load connected to the headphone.
> > 
> > Depending on board design, headphone detect pins can change to HPDETR or HPDETL.
> > 
> > Signed-off-by: Inha Song <ideal.song@samsung.com>
> > ---
> >  drivers/extcon/extcon-arizona.c   | 34 ++++++++++++++++++++++++++++++----
> >  include/linux/mfd/arizona/pdata.h |  3 +++
> >  2 files changed, 33 insertions(+), 4 deletions(-)
> > 
> > diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
> > index 63f01c4..7bc9159 100644
> > --- a/drivers/extcon/extcon-arizona.c
> > +++ b/drivers/extcon/extcon-arizona.c
> > @@ -95,6 +95,7 @@ struct arizona_extcon_info {
> >  	int jack_flips;
> >  
> >  	int hpdet_ip;
> > +	int hpdet_channel;
> 
> Don't really think this is necessary we can just use the pdata
> value where required doesn't add much copying it to extcon_info.
> 

OK,


> >  
> >  	struct extcon_dev *edev;
> >  };
> > @@ -653,9 +654,9 @@ static void arizona_identify_headphone(struct arizona_extcon_info *info)
> >  	ret = regmap_update_bits(arizona->regmap,
> >  				 ARIZONA_ACCESSORY_DETECT_MODE_1,
> >  				 ARIZONA_ACCDET_MODE_MASK,
> > -				 ARIZONA_ACCDET_MODE_HPL);
> > +				 info->hpdet_channel);
> >  	if (ret != 0) {
> > -		dev_err(arizona->dev, "Failed to set HPDETL mode: %d\n", ret);
> > +		dev_err(arizona->dev, "Failed to set HPDET mode: %d\n", ret);
> >  		goto err;
> >  	}
> >  
> > @@ -705,9 +706,9 @@ static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info)
> >  				 ARIZONA_ACCESSORY_DETECT_MODE_1,
> >  				 ARIZONA_ACCDET_SRC | ARIZONA_ACCDET_MODE_MASK,
> >  				 info->micd_modes[0].src |
> > -				 ARIZONA_ACCDET_MODE_HPL);
> > +				 info->hpdet_channel);
> >  	if (ret != 0) {
> > -		dev_err(arizona->dev, "Failed to set HPDETL mode: %d\n", ret);
> > +		dev_err(arizona->dev, "Failed to set HPDET mode: %d\n", ret);
> >  		goto err;
> >  	}
> >  
> > @@ -1103,6 +1104,23 @@ static void arizona_micd_set_level(struct arizona *arizona, int index,
> >  	regmap_update_bits(arizona->regmap, reg, mask, level);
> >  }
> >  
> > +#ifdef CONFIG_OF
> > +static int arizona_of_get_extcon_pdata(struct arizona *arizona)
> > +{
> > +	struct arizona_pdata *pdata = &arizona->pdata;
> > +
> > +	of_property_read_u32(arizona->dev->of_node, "wlf,hpdet-channel",
> > +			     &pdata->hpdet_channel);
> > +
> > +	return 0;
> > +}
> > +#else
> > +static inline int arizona_of_get_extcon_pdata(struct arizona *arizona)
> > +{
> > +	return 0;
> > +}
> > +#endif
> > +
> 
> I believe it is preferred to leave this as not ifdef'ed...
> 
> >  static int arizona_extcon_probe(struct platform_device *pdev)
> >  {
> >  	struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
> > @@ -1120,6 +1138,9 @@ static int arizona_extcon_probe(struct platform_device *pdev)
> >  	if (!info)
> >  		return -ENOMEM;
> >  
> > +	if (!dev_get_platdata(arizona->dev))
> > +		arizona_of_get_extcon_pdata(arizona);
> 
> And to wrap this in an if (IS_ENABLED(CONFIG_OF)).

OK, I will fix. And I will also change to arizona_extcon_of_get_pdata().

> 
> > +
> >  	info->micvdd = devm_regulator_get(&pdev->dev, "MICVDD");
> >  	if (IS_ERR(info->micvdd)) {
> >  		ret = PTR_ERR(info->micvdd);
> > @@ -1338,6 +1359,11 @@ static int arizona_extcon_probe(struct platform_device *pdev)
> >  
> >  	arizona_extcon_set_mode(info, 0);
> >  
> > +	if (arizona->pdata.hpdet_channel)
> > +		info->hpdet_channel = ARIZONA_ACCDET_MODE_HPR;
> > +	else
> > +		info->hpdet_channel = ARIZONA_ACCDET_MODE_HPL;
> > +
> 
> Just move the two defines in include/dt-bindings/mfd/arizona.h
> and have the pdata get set directly to one of the values.

Ok, I agree. But I have a question.
Should I also move ACCDET_MODE_MIC define to dt-bindings header?

> 
> >  	pm_runtime_enable(&pdev->dev);
> >  	pm_runtime_idle(&pdev->dev);
> >  	pm_runtime_get_sync(&pdev->dev);
> > diff --git a/include/linux/mfd/arizona/pdata.h b/include/linux/mfd/arizona/pdata.h
> > index 4578c72..feb5903 100644
> > --- a/include/linux/mfd/arizona/pdata.h
> > +++ b/include/linux/mfd/arizona/pdata.h
> > @@ -139,6 +139,9 @@ struct arizona_pdata {
> >  	/** GPIO used for mic isolation with HPDET */
> >  	int hpdet_id_gpio;
> >  
> > +	/** Channel to use for headphone detection */
> > +	int hpdet_channel;
> 
> Lets use and unsigned here, we don't need it to be signed and it
> saves type issues with read_u32.

OK,

Best Regards,
Inha Song.

> 
> > +
> >  	/** Extra debounce timeout used during initial mic detection (ms) */
> >  	int micd_detect_debounce;
> >  
> > -- 
> > 2.0.0.390.gcb682f8
> > 
> 
> Thanks,
> Charles
> _______________________________________________
> Alsa-devel mailing list
> Alsa-devel@alsa-project.org
> http://mailman.alsa-project.org/mailman/listinfo/alsa-devel

Re: [alsa-devel] [PATCH 1/2] extcon: arizona: Add support for select accessory detect mode when headphone detection"

[Charles Keepax]

On Mon, Apr 20, 2015 at 10:45:14AM +0900, Inha Song wrote:
> Hi,
> 
> Thanks for your comments,
> 
> 
> On Fri, 17 Apr 2015 10:00:47 +0100
> Charles Keepax <ckeepax@opensource.wolfsonmicro.com> wrote:
> 
> > On Fri, Apr 17, 2015 at 05:32:58PM +0900, Inha Song wrote:
> > > This patch add support for select accessory detect mode to HPDETL or HPDETR.
> > > Arizona provides a headphone detection circuit on the HPDETL and HPDETR pins
> > > to measure the impedance of an external load connected to the headphone.
> > > 
> > > Depending on board design, headphone detect pins can change to HPDETR or HPDETL.
> > > 
> > > Signed-off-by: Inha Song <ideal.song@samsung.com>
> > > ---
> > 
> > > +
> > >  	info->micvdd = devm_regulator_get(&pdev->dev, "MICVDD");
> > >  	if (IS_ERR(info->micvdd)) {
> > >  		ret = PTR_ERR(info->micvdd);
> > > @@ -1338,6 +1359,11 @@ static int arizona_extcon_probe(struct platform_device *pdev)
> > >  
> > >  	arizona_extcon_set_mode(info, 0);
> > >  
> > > +	if (arizona->pdata.hpdet_channel)
> > > +		info->hpdet_channel = ARIZONA_ACCDET_MODE_HPR;
> > > +	else
> > > +		info->hpdet_channel = ARIZONA_ACCDET_MODE_HPL;
> > > +
> > 
> > Just move the two defines in include/dt-bindings/mfd/arizona.h
> > and have the pdata get set directly to one of the values.
> 
> Ok, I agree. But I have a question.
> Should I also move ACCDET_MODE_MIC define to dt-bindings header?
> 

Yeah I think move that over too, there is a reasonable chance it
will be need as part of the binding at some point in the future.

Thanks,
Charles

Re: [alsa-devel] [PATCH 1/2] extcon: arizona: Add support for select accessory detect mode when headphone detection"

[Charles Keepax]

On Mon, Apr 20, 2015 at 10:45:14AM +0900, Inha Song wrote:
> Hi,
> 
> Thanks for your comments,
> 
> 
> On Fri, 17 Apr 2015 10:00:47 +0100
> Charles Keepax <ckeepax-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org> wrote:
> 
> > On Fri, Apr 17, 2015 at 05:32:58PM +0900, Inha Song wrote:
> > > This patch add support for select accessory detect mode to HPDETL or HPDETR.
> > > Arizona provides a headphone detection circuit on the HPDETL and HPDETR pins
> > > to measure the impedance of an external load connected to the headphone.
> > > 
> > > Depending on board design, headphone detect pins can change to HPDETR or HPDETL.
> > > 
> > > Signed-off-by: Inha Song <ideal.song-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
> > > ---
> > 
> > > +
> > >  	info->micvdd = devm_regulator_get(&pdev->dev, "MICVDD");
> > >  	if (IS_ERR(info->micvdd)) {
> > >  		ret = PTR_ERR(info->micvdd);
> > > @@ -1338,6 +1359,11 @@ static int arizona_extcon_probe(struct platform_device *pdev)
> > >  
> > >  	arizona_extcon_set_mode(info, 0);
> > >  
> > > +	if (arizona->pdata.hpdet_channel)
> > > +		info->hpdet_channel = ARIZONA_ACCDET_MODE_HPR;
> > > +	else
> > > +		info->hpdet_channel = ARIZONA_ACCDET_MODE_HPL;
> > > +
> > 
> > Just move the two defines in include/dt-bindings/mfd/arizona.h
> > and have the pdata get set directly to one of the values.
> 
> Ok, I agree. But I have a question.
> Should I also move ACCDET_MODE_MIC define to dt-bindings header?
> 

Yeah I think move that over too, there is a reasonable chance it
will be need as part of the binding at some point in the future.

Thanks,
Charles
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