[14/21] regulator: s5m8767: Pass descriptor instead of GPIO number

Message ID 20180212131717.27193-15-linus.walleij@linaro.org
State New
Headers show
Series
  • regulator: switch core to GPIO descriptors
Related show

Commit Message

Linus Walleij Feb. 12, 2018, 1:17 p.m.
Instead of passing a global GPIO number for the enable GPIO, pass
a descriptor looked up from the device tree node for the
regulator.

This regulator supports passing platform data, but enable/sleep
regulators are looked up from the device tree exclusively, so
we can need not touch other files.

Cc: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
Lee: would be nice if you could ACK this smallish patch to
the MFD header.
---
 drivers/regulator/s5m8767.c      | 26 +++++++++++++++-----------
 include/linux/mfd/samsung/core.h |  4 +++-
 2 files changed, 18 insertions(+), 12 deletions(-)

Comments

Lee Jones Feb. 12, 2018, 2:58 p.m. | #1
On Mon, 12 Feb 2018, Linus Walleij wrote:

> Instead of passing a global GPIO number for the enable GPIO, pass
> a descriptor looked up from the device tree node for the
> regulator.
> 
> This regulator supports passing platform data, but enable/sleep
> regulators are looked up from the device tree exclusively, so
> we can need not touch other files.
> 
> Cc: Lee Jones <lee.jones@linaro.org>
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
> ---
> Lee: would be nice if you could ACK this smallish patch to
> the MFD header.

Fine, but any sign of a conflict and I'll need a PR.

Acked-by: Lee Jones <lee.jones@linaro.org>

> ---
>  drivers/regulator/s5m8767.c      | 26 +++++++++++++++-----------
>  include/linux/mfd/samsung/core.h |  4 +++-
>  2 files changed, 18 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/regulator/s5m8767.c b/drivers/regulator/s5m8767.c
> index 4836947e1521..b8443a360646 100644
> --- a/drivers/regulator/s5m8767.c
> +++ b/drivers/regulator/s5m8767.c
> @@ -13,6 +13,7 @@
>  
>  #include <linux/err.h>
>  #include <linux/of_gpio.h>
> +#include <linux/gpio/consumer.h>
>  #include <linux/module.h>
>  #include <linux/platform_device.h>
>  #include <linux/regulator/driver.h>
> @@ -459,15 +460,14 @@ static void s5m8767_regulator_config_ext_control(struct s5m8767_info *s5m8767,
>  		return;
>  	}
>  
> -	if (!gpio_is_valid(rdata->ext_control_gpio)) {
> +	if (!rdata->ext_control_gpiod) {
>  		dev_warn(s5m8767->dev,
>  				"ext-control for %s: GPIO not valid, ignoring\n",
> -				rdata->reg_node->name);
> +			 rdata->reg_node->name);
>  		return;
>  	}
>  
> -	config->ena_gpio = rdata->ext_control_gpio;
> -	config->ena_gpio_flags = GPIOF_OUT_INIT_HIGH;
> +	config->ena_gpiod = rdata->ext_control_gpiod;
>  }
>  
>  /*
> @@ -577,8 +577,14 @@ static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev,
>  			continue;
>  		}
>  
> -		rdata->ext_control_gpio = of_get_named_gpio(reg_np,
> -			"s5m8767,pmic-ext-control-gpios", 0);
> +		rdata->ext_control_gpiod = devm_gpiod_get_from_of_node(&pdev->dev,
> +								       reg_np,
> +								       "s5m8767,pmic-ext-control-gpios",
> +								       0,
> +								       GPIOD_OUT_HIGH,
> +								       "s5m8767");
> +		if (IS_ERR(rdata->ext_control_gpiod))
> +			return PTR_ERR(rdata->ext_control_gpiod);
>  
>  		rdata->id = i;
>  		rdata->initdata = of_get_regulator_init_data(
> @@ -954,10 +960,8 @@ static int s5m8767_pmic_probe(struct platform_device *pdev)
>  		config.driver_data = s5m8767;
>  		config.regmap = iodev->regmap_pmic;
>  		config.of_node = pdata->regulators[i].reg_node;
> -		config.ena_gpio = -EINVAL;
> -		config.ena_gpio_flags = 0;
> -		config.ena_gpio_initialized = true;
> -		if (gpio_is_valid(pdata->regulators[i].ext_control_gpio))
> +		config.ena_gpiod = NULL;
> +		if (pdata->regulators[i].ext_control_gpiod)
>  			s5m8767_regulator_config_ext_control(s5m8767,
>  					&pdata->regulators[i], &config);
>  
> @@ -970,7 +974,7 @@ static int s5m8767_pmic_probe(struct platform_device *pdev)
>  			return ret;
>  		}
>  
> -		if (gpio_is_valid(pdata->regulators[i].ext_control_gpio)) {
> +		if (pdata->regulators[i].ext_control_gpiod) {
>  			ret = s5m8767_enable_ext_control(s5m8767, rdev);
>  			if (ret < 0) {
>  				dev_err(s5m8767->dev,
> diff --git a/include/linux/mfd/samsung/core.h b/include/linux/mfd/samsung/core.h
> index 5a23dd4df432..28f4ae76271d 100644
> --- a/include/linux/mfd/samsung/core.h
> +++ b/include/linux/mfd/samsung/core.h
> @@ -39,6 +39,8 @@
>  #define STEP_12_5_MV		12500
>  #define STEP_6_25_MV		6250
>  
> +struct gpio_desc;
> +
>  enum sec_device_type {
>  	S5M8751X,
>  	S5M8763X,
> @@ -151,7 +153,7 @@ struct sec_regulator_data {
>  	int				id;
>  	struct regulator_init_data	*initdata;
>  	struct device_node		*reg_node;
> -	int				ext_control_gpio;
> +	struct gpio_desc		*ext_control_gpiod;
>  };
>  
>  /*

Patch

diff --git a/drivers/regulator/s5m8767.c b/drivers/regulator/s5m8767.c
index 4836947e1521..b8443a360646 100644
--- a/drivers/regulator/s5m8767.c
+++ b/drivers/regulator/s5m8767.c
@@ -13,6 +13,7 @@ 
 
 #include <linux/err.h>
 #include <linux/of_gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/driver.h>
@@ -459,15 +460,14 @@  static void s5m8767_regulator_config_ext_control(struct s5m8767_info *s5m8767,
 		return;
 	}
 
-	if (!gpio_is_valid(rdata->ext_control_gpio)) {
+	if (!rdata->ext_control_gpiod) {
 		dev_warn(s5m8767->dev,
 				"ext-control for %s: GPIO not valid, ignoring\n",
-				rdata->reg_node->name);
+			 rdata->reg_node->name);
 		return;
 	}
 
-	config->ena_gpio = rdata->ext_control_gpio;
-	config->ena_gpio_flags = GPIOF_OUT_INIT_HIGH;
+	config->ena_gpiod = rdata->ext_control_gpiod;
 }
 
 /*
@@ -577,8 +577,14 @@  static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev,
 			continue;
 		}
 
-		rdata->ext_control_gpio = of_get_named_gpio(reg_np,
-			"s5m8767,pmic-ext-control-gpios", 0);
+		rdata->ext_control_gpiod = devm_gpiod_get_from_of_node(&pdev->dev,
+								       reg_np,
+								       "s5m8767,pmic-ext-control-gpios",
+								       0,
+								       GPIOD_OUT_HIGH,
+								       "s5m8767");
+		if (IS_ERR(rdata->ext_control_gpiod))
+			return PTR_ERR(rdata->ext_control_gpiod);
 
 		rdata->id = i;
 		rdata->initdata = of_get_regulator_init_data(
@@ -954,10 +960,8 @@  static int s5m8767_pmic_probe(struct platform_device *pdev)
 		config.driver_data = s5m8767;
 		config.regmap = iodev->regmap_pmic;
 		config.of_node = pdata->regulators[i].reg_node;
-		config.ena_gpio = -EINVAL;
-		config.ena_gpio_flags = 0;
-		config.ena_gpio_initialized = true;
-		if (gpio_is_valid(pdata->regulators[i].ext_control_gpio))
+		config.ena_gpiod = NULL;
+		if (pdata->regulators[i].ext_control_gpiod)
 			s5m8767_regulator_config_ext_control(s5m8767,
 					&pdata->regulators[i], &config);
 
@@ -970,7 +974,7 @@  static int s5m8767_pmic_probe(struct platform_device *pdev)
 			return ret;
 		}
 
-		if (gpio_is_valid(pdata->regulators[i].ext_control_gpio)) {
+		if (pdata->regulators[i].ext_control_gpiod) {
 			ret = s5m8767_enable_ext_control(s5m8767, rdev);
 			if (ret < 0) {
 				dev_err(s5m8767->dev,
diff --git a/include/linux/mfd/samsung/core.h b/include/linux/mfd/samsung/core.h
index 5a23dd4df432..28f4ae76271d 100644
--- a/include/linux/mfd/samsung/core.h
+++ b/include/linux/mfd/samsung/core.h
@@ -39,6 +39,8 @@ 
 #define STEP_12_5_MV		12500
 #define STEP_6_25_MV		6250
 
+struct gpio_desc;
+
 enum sec_device_type {
 	S5M8751X,
 	S5M8763X,
@@ -151,7 +153,7 @@  struct sec_regulator_data {
 	int				id;
 	struct regulator_init_data	*initdata;
 	struct device_node		*reg_node;
-	int				ext_control_gpio;
+	struct gpio_desc		*ext_control_gpiod;
 };
 
 /*