[PATCH v2 1/3] extcon: arizona: Add device bindings for the micd configurations

[PATCH v2 1/3] extcon: arizona: Add device bindings for the micd configurations

[Charles Keepax]

Add device bindings to support configuring the jack detection
configurations. Each configuration needs to specify the connection of
the mic det pins, which micbias should be used and the value of the
micd polarity GPIO required to activate that configuration.

Signed-off-by: Charles Keepax <ckeepax-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
Acked-by: Chanwoo Choi <cw00.choi-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
---

Changes since v1:
 - Report error from arizona_extcon_get_micd_configs

Thanks,
Charles

 drivers/extcon/extcon-arizona.c | 56 +++++++++++++++++++++++++++++++++++++++--
 1 file changed, 54 insertions(+), 2 deletions(-)

diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index 8647533..c121d01 100644
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -1201,10 +1201,58 @@ static void arizona_micd_set_level(struct arizona *arizona, int index,
 	regmap_update_bits(arizona->regmap, reg, mask, level);
 }
 
-static int arizona_extcon_device_get_pdata(struct arizona *arizona)
+static int arizona_extcon_get_micd_configs(struct device *dev,
+					   struct arizona *arizona)
+{
+	const char * const prop = "wlf,micd-configs";
+	const int entries_per_config = 3;
+	struct arizona_micd_config *micd_configs;
+	int nconfs, ret;
+	int i, j;
+	u32 *vals;
+
+	nconfs = device_property_read_u32_array(arizona->dev, prop, NULL, 0);
+	if (nconfs <= 0)
+		return 0;
+
+	vals = kcalloc(nconfs, sizeof(u32), GFP_KERNEL);
+	if (!vals)
+		return -ENOMEM;
+
+	ret = device_property_read_u32_array(arizona->dev, prop, vals, nconfs);
+	if (ret < 0)
+		goto out;
+
+	nconfs /= entries_per_config;
+
+	micd_configs = devm_kzalloc(dev,
+				    nconfs * sizeof(struct arizona_micd_range),
+				    GFP_KERNEL);
+	if (!micd_configs) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	for (i = 0, j = 0; i < nconfs; ++i) {
+		micd_configs[i].src = vals[j++] ? ARIZONA_ACCDET_SRC : 0;
+		micd_configs[i].bias = vals[j++];
+		micd_configs[i].gpio = vals[j++];
+	}
+
+	arizona->pdata.micd_configs = micd_configs;
+	arizona->pdata.num_micd_configs = nconfs;
+
+out:
+	kfree(vals);
+	return ret;
+}
+
+static int arizona_extcon_device_get_pdata(struct device *dev,
+					   struct arizona *arizona)
 {
 	struct arizona_pdata *pdata = &arizona->pdata;
 	unsigned int val = ARIZONA_ACCDET_MODE_HPL;
+	int ret;
 
 	device_property_read_u32(arizona->dev, "wlf,hpdet-channel", &val);
 	switch (val) {
@@ -1249,6 +1297,10 @@ static int arizona_extcon_device_get_pdata(struct arizona *arizona)
 	pdata->jd_gpio5_nopull = device_property_read_bool(arizona->dev,
 						"wlf,use-jd2-nopull");
 
+	ret = arizona_extcon_get_micd_configs(dev, arizona);
+	if (ret < 0)
+		dev_err(arizona->dev, "Failed to read micd configs: %d\n", ret);
+
 	return 0;
 }
 
@@ -1270,7 +1322,7 @@ static int arizona_extcon_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	if (!dev_get_platdata(arizona->dev))
-		arizona_extcon_device_get_pdata(arizona);
+		arizona_extcon_device_get_pdata(&pdev->dev, arizona);
 
 	info->micvdd = devm_regulator_get(&pdev->dev, "MICVDD");
 	if (IS_ERR(info->micvdd)) {
-- 
2.1.4

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[PATCH v2 2/3] extcon: arizona: Update device tree binding for mic detect configurations

[Charles Keepax]

Update the device tree binding documentation to include documentation for
the wlf,micd-configs property that is used to specify the configurations
for headset polarity detection (CTIA / OTMP).

Signed-off-by: Charles Keepax <ckeepax-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
Acked-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
---

No changes since v1.

Thanks,
Charles

 Documentation/devicetree/bindings/extcon/extcon-arizona.txt | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/extcon/extcon-arizona.txt b/Documentation/devicetree/bindings/extcon/extcon-arizona.txt
index 238e10e..fd9b898 100644
--- a/Documentation/devicetree/bindings/extcon/extcon-arizona.txt
+++ b/Documentation/devicetree/bindings/extcon/extcon-arizona.txt
@@ -37,5 +37,13 @@ Optional properties:
     milliseconds.
   - wlf,micd-force-micbias : Force MICBIAS continuously on during microphone
     detection.
+  - wlf,micd-configs : Headset polarity configurations (generally used for
+    detection of CTIA / OMTP headsets), the field can be of variable length
+    but should always be a multiple of 3 cells long, each three cell group
+    represents one polarity configuration.
+    The first cell defines the accessory detection pin, zero will use MICDET1
+    and all other values will use MICDET2.
+    The second cell represents the MICBIAS to be used.
+    The third cell represents the value of the micd-pol-gpio pin.
 
   - wlf,gpsw : Settings for the general purpose switch
-- 
2.1.4

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Re: [PATCH v2 2/3] extcon: arizona: Update device tree binding for mic detect configurations

[Chanwoo Choi]

On 2015년 12월 14일 19:37, Charles Keepax wrote:
> Update the device tree binding documentation to include documentation for
> the wlf,micd-configs property that is used to specify the configurations
> for headset polarity detection (CTIA / OTMP).
> 
> Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
> Acked-by: Rob Herring <robh@kernel.org>
> ---
> 
> No changes since v1.
> 
> Thanks,
> Charles
> 
>  Documentation/devicetree/bindings/extcon/extcon-arizona.txt | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/extcon/extcon-arizona.txt b/Documentation/devicetree/bindings/extcon/extcon-arizona.txt
> index 238e10e..fd9b898 100644
> --- a/Documentation/devicetree/bindings/extcon/extcon-arizona.txt
> +++ b/Documentation/devicetree/bindings/extcon/extcon-arizona.txt
> @@ -37,5 +37,13 @@ Optional properties:
>      milliseconds.
>    - wlf,micd-force-micbias : Force MICBIAS continuously on during microphone
>      detection.
> +  - wlf,micd-configs : Headset polarity configurations (generally used for
> +    detection of CTIA / OMTP headsets), the field can be of variable length
> +    but should always be a multiple of 3 cells long, each three cell group
> +    represents one polarity configuration.
> +    The first cell defines the accessory detection pin, zero will use MICDET1
> +    and all other values will use MICDET2.
> +    The second cell represents the MICBIAS to be used.
> +    The third cell represents the value of the micd-pol-gpio pin.
>  
>    - wlf,gpsw : Settings for the general purpose switch
> 

Applied it.

Thanks,
Chanwoo Choi

[PATCH 3/3] extcon: arizona: Add DT binding examples

[Charles Keepax]

Add an example for all elements of the Arizona extcon device tree
binding.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
---
 .../devicetree/bindings/extcon/extcon-arizona.txt  | 26 ++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/Documentation/devicetree/bindings/extcon/extcon-arizona.txt b/Documentation/devicetree/bindings/extcon/extcon-arizona.txt
index fd9b898..e27341f 100644
--- a/Documentation/devicetree/bindings/extcon/extcon-arizona.txt
+++ b/Documentation/devicetree/bindings/extcon/extcon-arizona.txt
@@ -47,3 +47,29 @@ Optional properties:
     The third cell represents the value of the micd-pol-gpio pin.
 
   - wlf,gpsw : Settings for the general purpose switch
+
+Example:
+
+codec: wm8280@0 {
+	compatible = "wlf,wm8280";
+	reg = <0>;
+	...
+
+	wlf,use-jd2;
+	wlf,use-jd2-nopull;
+	wlf,jd-invert;
+
+	wlf,micd-software-compare;
+	wlf,micd-detect-debounce = <0>;
+	wlf,micd-pol-gpio = <&codec 2 0>;
+	wlf,micd-rate = <ARIZONA_MICD_TIME_8MS>;
+	wlf,micd-dbtime = <4>;
+	wlf,micd-timeout-ms = <100>;
+	wlf,micd-force-micbias;
+	wlf,micd-configs = <
+		0 1 0 /* MICDET1 MICBIAS1 GPIO=low */
+		1 2 1 /* MICDET2 MICBIAS2 GPIO=high */
+	>;
+
+	wlf,gpsw = <0>;
+};
-- 
2.1.4

Re: [PATCH 3/3] extcon: arizona: Add DT binding examples

[Chanwoo Choi]

On 2015년 12월 14일 19:37, Charles Keepax wrote:
> Add an example for all elements of the Arizona extcon device tree
> binding.
> 
> Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
> ---
>  .../devicetree/bindings/extcon/extcon-arizona.txt  | 26 ++++++++++++++++++++++
>  1 file changed, 26 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/extcon/extcon-arizona.txt b/Documentation/devicetree/bindings/extcon/extcon-arizona.txt
> index fd9b898..e27341f 100644
> --- a/Documentation/devicetree/bindings/extcon/extcon-arizona.txt
> +++ b/Documentation/devicetree/bindings/extcon/extcon-arizona.txt
> @@ -47,3 +47,29 @@ Optional properties:
>      The third cell represents the value of the micd-pol-gpio pin.
>  
>    - wlf,gpsw : Settings for the general purpose switch
> +
> +Example:
> +
> +codec: wm8280@0 {
> +	compatible = "wlf,wm8280";
> +	reg = <0>;
> +	...
> +
> +	wlf,use-jd2;
> +	wlf,use-jd2-nopull;
> +	wlf,jd-invert;
> +
> +	wlf,micd-software-compare;
> +	wlf,micd-detect-debounce = <0>;
> +	wlf,micd-pol-gpio = <&codec 2 0>;
> +	wlf,micd-rate = <ARIZONA_MICD_TIME_8MS>;
> +	wlf,micd-dbtime = <4>;
> +	wlf,micd-timeout-ms = <100>;
> +	wlf,micd-force-micbias;
> +	wlf,micd-configs = <
> +		0 1 0 /* MICDET1 MICBIAS1 GPIO=low */
> +		1 2 1 /* MICDET2 MICBIAS2 GPIO=high */
> +	>;
> +
> +	wlf,gpsw = <0>;
> +};
> 

Looks good to me. Applied it.

Thanks,
Chanwoo Choi

Re: [PATCH v2 1/3] extcon: arizona: Add device bindings for the micd configurations

[Chanwoo Choi]

On 2015년 12월 14일 19:37, Charles Keepax wrote:
> Add device bindings to support configuring the jack detection
> configurations. Each configuration needs to specify the connection of
> the mic det pins, which micbias should be used and the value of the
> micd polarity GPIO required to activate that configuration.
> 
> Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
> Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
> ---
> 
> Changes since v1:
>  - Report error from arizona_extcon_get_micd_configs
> 
> Thanks,
> Charles
> 
>  drivers/extcon/extcon-arizona.c | 56 +++++++++++++++++++++++++++++++++++++++--
>  1 file changed, 54 insertions(+), 2 deletions(-)

Applied it.

Thanks,
Chanwoo Choi