[PATCH v2 00/11] leds: deduplicate led_init_default_state_get()

[PATCH v2 00/11] leds: deduplicate led_init_default_state_get()

[Andy Shevchenko]

There are several users of LED framework that reimplement the
functionality of led_init_default_state_get(). In order to 
deduplicate them move the declaration to the global header
(patch 2) and convert users (patche 3-11).

Chnagelog v2:
- added missed patch 2 and hence make it the series
- appended tag to patch 7
- new patch 1

Andy Shevchenko (11):
  leds: add missing includes and forward declarations in leds.h
  leds: Move led_init_default_state_get() to the global header
  leds: an30259a: Get rid of custom led_init_default_state_get()
  leds: bcm6328: Get rid of custom led_init_default_state_get()
  leds: bcm6358: Get rid of custom led_init_default_state_get()
  leds: mt6323: Get rid of custom led_init_default_state_get()
  leds: mt6360: Get rid of custom led_init_default_state_get()
  leds: pca955x: Get rid of custom led_init_default_state_get()
  leds: pm8058: Get rid of custom led_init_default_state_get()
  leds: syscon: Get rid of custom led_init_default_state_get()
  net: dsa: hellcreek: Get rid of custom led_init_default_state_get()

 drivers/leds/flash/leds-mt6360.c           | 38 +++--------------
 drivers/leds/leds-an30259a.c               | 21 ++--------
 drivers/leds/leds-bcm6328.c                | 49 +++++++++++-----------
 drivers/leds/leds-bcm6358.c                | 32 +++++++-------
 drivers/leds/leds-mt6323.c                 | 30 ++++++-------
 drivers/leds/leds-pca955x.c                | 26 +++---------
 drivers/leds/leds-pm8058.c                 | 29 ++++++-------
 drivers/leds/leds-syscon.c                 | 49 ++++++++++------------
 drivers/leds/leds.h                        |  1 -
 drivers/net/dsa/hirschmann/hellcreek_ptp.c | 45 ++++++++++----------
 include/linux/leds.h                       | 15 ++++---
 11 files changed, 143 insertions(+), 192 deletions(-)

-- 
2.35.1


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[PATCH v2 01/11] leds: add missing includes and forward declarations in leds.h

[Andy Shevchenko]

Add missing includes and forward declarations to leds.h. While at it,
replace headers by forward declarations and vise versa.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 include/linux/leds.h | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/include/linux/leds.h b/include/linux/leds.h
index ba4861ec73d3..499aea1e59b9 100644
--- a/include/linux/leds.h
+++ b/include/linux/leds.h
@@ -10,17 +10,21 @@
 
 #include <dt-bindings/leds/common.h>
 #include <linux/device.h>
-#include <linux/kernfs.h>
-#include <linux/list.h>
 #include <linux/mutex.h>
 #include <linux/rwsem.h>
 #include <linux/spinlock.h>
 #include <linux/timer.h>
+#include <linux/types.h>
 #include <linux/workqueue.h>
 
-struct device;
-struct led_pattern;
+struct attribute_group;
 struct device_node;
+struct fwnode_handle;
+struct gpio_desc;
+struct kernfs_node;
+struct led_pattern;
+struct platform_device;
+
 /*
  * LED Core
  */
@@ -508,7 +512,6 @@ struct led_properties {
 	const char	*label;
 };
 
-struct gpio_desc;
 typedef int (*gpio_blink_set_t)(struct gpio_desc *desc, int state,
 				unsigned long *delay_on,
 				unsigned long *delay_off);
-- 
2.35.1


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[PATCH v2 02/11] leds: Move led_init_default_state_get() to the global header

[Andy Shevchenko]

There are users inside and outside LED framework that have implemented
a local copy of led_init_default_state_get(). In order to deduplicate
that, as the first step move the declaration from LED header to the
global one.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/leds/leds.h  | 1 -
 include/linux/leds.h | 2 ++
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/leds/leds.h b/drivers/leds/leds.h
index aa64757a4d89..345062ccabda 100644
--- a/drivers/leds/leds.h
+++ b/drivers/leds/leds.h
@@ -27,7 +27,6 @@ ssize_t led_trigger_read(struct file *filp, struct kobject *kobj,
 ssize_t led_trigger_write(struct file *filp, struct kobject *kobj,
 			struct bin_attribute *bin_attr, char *buf,
 			loff_t pos, size_t count);
-enum led_default_state led_init_default_state_get(struct fwnode_handle *fwnode);
 
 extern struct rw_semaphore leds_list_lock;
 extern struct list_head leds_list;
diff --git a/include/linux/leds.h b/include/linux/leds.h
index 499aea1e59b9..b96feacc73f8 100644
--- a/include/linux/leds.h
+++ b/include/linux/leds.h
@@ -67,6 +67,8 @@ struct led_init_data {
 	bool devname_mandatory;
 };
 
+enum led_default_state led_init_default_state_get(struct fwnode_handle *fwnode);
+
 struct led_hw_trigger_type {
 	int dummy;
 };
-- 
2.35.1


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[PATCH v2 03/11] leds: an30259a: Get rid of custom led_init_default_state_get()

[Andy Shevchenko]

LED core provides a helper to parse default state from firmware node.
Use it instead of custom implementation.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/leds/leds-an30259a.c | 21 ++++-----------------
 1 file changed, 4 insertions(+), 17 deletions(-)

diff --git a/drivers/leds/leds-an30259a.c b/drivers/leds/leds-an30259a.c
index a0df1fb28774..d7db47cf859b 100644
--- a/drivers/leds/leds-an30259a.c
+++ b/drivers/leds/leds-an30259a.c
@@ -55,10 +55,6 @@
 
 #define AN30259A_NAME "an30259a"
 
-#define STATE_OFF 0
-#define STATE_KEEP 1
-#define STATE_ON 2
-
 struct an30259a;
 
 struct an30259a_led {
@@ -66,7 +62,7 @@ struct an30259a_led {
 	struct fwnode_handle *fwnode;
 	struct led_classdev cdev;
 	u32 num;
-	u32 default_state;
+	enum led_default_state default_state;
 	bool sloping;
 };
 
@@ -205,7 +201,6 @@ static int an30259a_dt_init(struct i2c_client *client,
 	struct device_node *np = dev_of_node(&client->dev), *child;
 	int count, ret;
 	int i = 0;
-	const char *str;
 	struct an30259a_led *led;
 
 	count = of_get_available_child_count(np);
@@ -228,15 +223,7 @@ static int an30259a_dt_init(struct i2c_client *client,
 		led->num = source;
 		led->chip = chip;
 		led->fwnode = of_fwnode_handle(child);
-
-		if (!of_property_read_string(child, "default-state", &str)) {
-			if (!strcmp(str, "on"))
-				led->default_state = STATE_ON;
-			else if (!strcmp(str, "keep"))
-				led->default_state = STATE_KEEP;
-			else
-				led->default_state = STATE_OFF;
-		}
+		led->default_state = led_init_default_state_get(led->fwnode);
 
 		i++;
 	}
@@ -261,10 +248,10 @@ static void an30259a_init_default_state(struct an30259a_led *led)
 	int led_on, err;
 
 	switch (led->default_state) {
-	case STATE_ON:
+	case LEDS_DEFSTATE_ON:
 		led->cdev.brightness = LED_FULL;
 		break;
-	case STATE_KEEP:
+	case LEDS_DEFSTATE_KEEP:
 		err = regmap_read(chip->regmap, AN30259A_REG_LED_ON, &led_on);
 		if (err)
 			break;
-- 
2.35.1


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[PATCH v2 04/11] leds: bcm6328: Get rid of custom led_init_default_state_get()

[Andy Shevchenko]

LED core provides a helper to parse default state from firmware node.
Use it instead of custom implementation.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/leds/leds-bcm6328.c | 49 ++++++++++++++++++-------------------
 1 file changed, 24 insertions(+), 25 deletions(-)

diff --git a/drivers/leds/leds-bcm6328.c b/drivers/leds/leds-bcm6328.c
index 2d4d87957a30..246f1296ab09 100644
--- a/drivers/leds/leds-bcm6328.c
+++ b/drivers/leds/leds-bcm6328.c
@@ -330,7 +330,9 @@ static int bcm6328_led(struct device *dev, struct device_node *nc, u32 reg,
 {
 	struct led_init_data init_data = {};
 	struct bcm6328_led *led;
-	const char *state;
+	enum led_default_state state;
+	unsigned long val, shift;
+	void __iomem *mode;
 	int rc;
 
 	led = devm_kzalloc(dev, sizeof(*led), GFP_KERNEL);
@@ -346,31 +348,29 @@ static int bcm6328_led(struct device *dev, struct device_node *nc, u32 reg,
 	if (of_property_read_bool(nc, "active-low"))
 		led->active_low = true;
 
-	if (!of_property_read_string(nc, "default-state", &state)) {
-		if (!strcmp(state, "on")) {
+	init_data.fwnode = of_fwnode_handle(nc);
+
+	state = led_init_default_state_get(init_data.fwnode);
+	switch (state) {
+	case LEDS_DEFSTATE_ON:
+		led->cdev.brightness = LED_FULL;
+		break;
+	case LEDS_DEFSTATE_KEEP:
+		shift = bcm6328_pin2shift(led->pin);
+		if (shift / 16)
+			mode = mem + BCM6328_REG_MODE_HI;
+		else
+			mode = mem + BCM6328_REG_MODE_LO;
+
+		val = bcm6328_led_read(mode) >> BCM6328_LED_SHIFT(shift % 16);
+		val &= BCM6328_LED_MODE_MASK;
+		if ((led->active_low && val == BCM6328_LED_MODE_OFF) ||
+		    (!led->active_low && val == BCM6328_LED_MODE_ON))
 			led->cdev.brightness = LED_FULL;
-		} else if (!strcmp(state, "keep")) {
-			void __iomem *mode;
-			unsigned long val, shift;
-
-			shift = bcm6328_pin2shift(led->pin);
-			if (shift / 16)
-				mode = mem + BCM6328_REG_MODE_HI;
-			else
-				mode = mem + BCM6328_REG_MODE_LO;
-
-			val = bcm6328_led_read(mode) >>
-			      BCM6328_LED_SHIFT(shift % 16);
-			val &= BCM6328_LED_MODE_MASK;
-			if ((led->active_low && val == BCM6328_LED_MODE_OFF) ||
-			    (!led->active_low && val == BCM6328_LED_MODE_ON))
-				led->cdev.brightness = LED_FULL;
-			else
-				led->cdev.brightness = LED_OFF;
-		} else {
+		else
 			led->cdev.brightness = LED_OFF;
-		}
-	} else {
+		break;
+	default:
 		led->cdev.brightness = LED_OFF;
 	}
 
@@ -378,7 +378,6 @@ static int bcm6328_led(struct device *dev, struct device_node *nc, u32 reg,
 
 	led->cdev.brightness_set = bcm6328_led_set;
 	led->cdev.blink_set = bcm6328_blink_set;
-	init_data.fwnode = of_fwnode_handle(nc);
 
 	rc = devm_led_classdev_register_ext(dev, &led->cdev, &init_data);
 	if (rc < 0)
-- 
2.35.1


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[PATCH v2 05/11] leds: bcm6358: Get rid of custom led_init_default_state_get()

[Andy Shevchenko]

LED core provides a helper to parse default state from firmware node.
Use it instead of custom implementation.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/leds/leds-bcm6358.c | 32 ++++++++++++++++----------------
 1 file changed, 16 insertions(+), 16 deletions(-)

diff --git a/drivers/leds/leds-bcm6358.c b/drivers/leds/leds-bcm6358.c
index 9d2e487fa08a..86e51d44a5a7 100644
--- a/drivers/leds/leds-bcm6358.c
+++ b/drivers/leds/leds-bcm6358.c
@@ -96,7 +96,8 @@ static int bcm6358_led(struct device *dev, struct device_node *nc, u32 reg,
 {
 	struct led_init_data init_data = {};
 	struct bcm6358_led *led;
-	const char *state;
+	enum led_default_state state;
+	unsigned long val;
 	int rc;
 
 	led = devm_kzalloc(dev, sizeof(*led), GFP_KERNEL);
@@ -110,29 +111,28 @@ static int bcm6358_led(struct device *dev, struct device_node *nc, u32 reg,
 	if (of_property_read_bool(nc, "active-low"))
 		led->active_low = true;
 
-	if (!of_property_read_string(nc, "default-state", &state)) {
-		if (!strcmp(state, "on")) {
+	init_data.fwnode = of_fwnode_handle(nc);
+
+	state = led_init_default_state_get(init_data.fwnode);
+	switch (state) {
+	case LEDS_DEFSTATE_ON:
+		led->cdev.brightness = LED_FULL;
+		break;
+	case LEDS_DEFSTATE_KEEP:
+		val = bcm6358_led_read(led->mem + BCM6358_REG_MODE);
+		val &= BIT(led->pin);
+		if ((led->active_low && !val) || (!led->active_low && val))
 			led->cdev.brightness = LED_FULL;
-		} else if (!strcmp(state, "keep")) {
-			unsigned long val;
-			val = bcm6358_led_read(led->mem + BCM6358_REG_MODE);
-			val &= BIT(led->pin);
-			if ((led->active_low && !val) ||
-			    (!led->active_low && val))
-				led->cdev.brightness = LED_FULL;
-			else
-				led->cdev.brightness = LED_OFF;
-		} else {
+		else
 			led->cdev.brightness = LED_OFF;
-		}
-	} else {
+		break;
+	default:
 		led->cdev.brightness = LED_OFF;
 	}
 
 	bcm6358_led_set(&led->cdev, led->cdev.brightness);
 
 	led->cdev.brightness_set = bcm6358_led_set;
-	init_data.fwnode = of_fwnode_handle(nc);
 
 	rc = devm_led_classdev_register_ext(dev, &led->cdev, &init_data);
 	if (rc < 0)
-- 
2.35.1


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[PATCH v2 06/11] leds: mt6323: Get rid of custom led_init_default_state_get()

[Andy Shevchenko]

LED core provides a helper to parse default state from firmware node.
Use it instead of custom implementation.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/leds/leds-mt6323.c | 30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/drivers/leds/leds-mt6323.c b/drivers/leds/leds-mt6323.c
index f59e0e8bda8b..17ee88043f52 100644
--- a/drivers/leds/leds-mt6323.c
+++ b/drivers/leds/leds-mt6323.c
@@ -339,23 +339,23 @@ static int mt6323_led_set_dt_default(struct led_classdev *cdev,
 				     struct device_node *np)
 {
 	struct mt6323_led *led = container_of(cdev, struct mt6323_led, cdev);
-	const char *state;
+	enum led_default_state state;
 	int ret = 0;
 
-	state = of_get_property(np, "default-state", NULL);
-	if (state) {
-		if (!strcmp(state, "keep")) {
-			ret = mt6323_get_led_hw_brightness(cdev);
-			if (ret < 0)
-				return ret;
-			led->current_brightness = ret;
-			ret = 0;
-		} else if (!strcmp(state, "on")) {
-			ret =
-			mt6323_led_set_brightness(cdev, cdev->max_brightness);
-		} else  {
-			ret = mt6323_led_set_brightness(cdev, LED_OFF);
-		}
+	state = led_init_default_state_get(of_fwnode_handle(np));
+	switch (state) {
+	case LEDS_DEFSTATE_ON:
+		ret = mt6323_led_set_brightness(cdev, cdev->max_brightness);
+		break;
+	case LEDS_DEFSTATE_KEEP:
+		ret = mt6323_get_led_hw_brightness(cdev);
+		if (ret < 0)
+			return ret;
+		led->current_brightness = ret;
+		ret = 0;
+		break;
+	default:
+		ret = mt6323_led_set_brightness(cdev, LED_OFF);
 	}
 
 	return ret;
-- 
2.35.1


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[PATCH v2 07/11] leds: mt6360: Get rid of custom led_init_default_state_get()

[Andy Shevchenko]

LED core provides a helper to parse default state from firmware node.
Use it instead of custom implementation.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
---
 drivers/leds/flash/leds-mt6360.c | 38 +++++---------------------------
 1 file changed, 6 insertions(+), 32 deletions(-)

diff --git a/drivers/leds/flash/leds-mt6360.c b/drivers/leds/flash/leds-mt6360.c
index e1066a52d2d2..1af6c5898343 100644
--- a/drivers/leds/flash/leds-mt6360.c
+++ b/drivers/leds/flash/leds-mt6360.c
@@ -71,10 +71,6 @@ enum {
 #define MT6360_STRBTO_STEPUS		32000
 #define MT6360_STRBTO_MAXUS		2432000
 
-#define STATE_OFF			0
-#define STATE_KEEP			1
-#define STATE_ON			2
-
 struct mt6360_led {
 	union {
 		struct led_classdev isnk;
@@ -84,7 +80,7 @@ struct mt6360_led {
 	struct v4l2_flash *v4l2_flash;
 	struct mt6360_priv *priv;
 	u32 led_no;
-	u32 default_state;
+	enum led_default_state default_state;
 };
 
 struct mt6360_priv {
@@ -405,10 +401,10 @@ static int mt6360_isnk_init_default_state(struct mt6360_led *led)
 		level = LED_OFF;
 
 	switch (led->default_state) {
-	case STATE_ON:
+	case LEDS_DEFSTATE_ON:
 		led->isnk.brightness = led->isnk.max_brightness;
 		break;
-	case STATE_KEEP:
+	case LEDS_DEFSTATE_KEEP:
 		led->isnk.brightness = min(level, led->isnk.max_brightness);
 		break;
 	default:
@@ -443,10 +439,10 @@ static int mt6360_flash_init_default_state(struct mt6360_led *led)
 		level = LED_OFF;
 
 	switch (led->default_state) {
-	case STATE_ON:
+	case LEDS_DEFSTATE_ON:
 		flash->led_cdev.brightness = flash->led_cdev.max_brightness;
 		break;
-	case STATE_KEEP:
+	case LEDS_DEFSTATE_KEEP:
 		flash->led_cdev.brightness =
 			min(level, flash->led_cdev.max_brightness);
 		break;
@@ -760,25 +756,6 @@ static int mt6360_init_flash_properties(struct mt6360_led *led,
 	return 0;
 }
 
-static int mt6360_init_common_properties(struct mt6360_led *led,
-					 struct led_init_data *init_data)
-{
-	const char *const states[] = { "off", "keep", "on" };
-	const char *str;
-	int ret;
-
-	if (!fwnode_property_read_string(init_data->fwnode,
-					 "default-state", &str)) {
-		ret = match_string(states, ARRAY_SIZE(states), str);
-		if (ret < 0)
-			ret = STATE_OFF;
-
-		led->default_state = ret;
-	}
-
-	return 0;
-}
-
 static void mt6360_v4l2_flash_release(struct mt6360_priv *priv)
 {
 	int i;
@@ -852,10 +829,7 @@ static int mt6360_led_probe(struct platform_device *pdev)
 
 		led->led_no = reg;
 		led->priv = priv;
-
-		ret = mt6360_init_common_properties(led, &init_data);
-		if (ret)
-			goto out_flash_release;
+		led->default_state = led_init_default_state_get(child);
 
 		if (reg == MT6360_VIRTUAL_MULTICOLOR ||
 		    reg <= MT6360_LED_ISNKML)
-- 
2.35.1


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[PATCH v2 08/11] leds: pca955x: Get rid of custom led_init_default_state_get()

[Andy Shevchenko]

LED core provides a helper to parse default state from firmware node.
Use it instead of custom implementation.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/leds/leds-pca955x.c | 26 ++++++--------------------
 1 file changed, 6 insertions(+), 20 deletions(-)

diff --git a/drivers/leds/leds-pca955x.c b/drivers/leds/leds-pca955x.c
index 81aaf21212d7..8dca6f99e699 100644
--- a/drivers/leds/leds-pca955x.c
+++ b/drivers/leds/leds-pca955x.c
@@ -130,7 +130,7 @@ struct pca955x_led {
 	struct led_classdev	led_cdev;
 	int			led_num;	/* 0 .. 15 potentially */
 	u32			type;
-	int			default_state;
+	enum led_default_state	default_state;
 	struct fwnode_handle	*fwnode;
 };
 
@@ -443,7 +443,6 @@ pca955x_get_pdata(struct i2c_client *client, struct pca955x_chipdef *chip)
 		return ERR_PTR(-ENOMEM);
 
 	device_for_each_child_node(&client->dev, child) {
-		const char *state;
 		u32 reg;
 		int res;
 
@@ -454,19 +453,9 @@ pca955x_get_pdata(struct i2c_client *client, struct pca955x_chipdef *chip)
 		led = &pdata->leds[reg];
 		led->type = PCA955X_TYPE_LED;
 		led->fwnode = child;
-		fwnode_property_read_u32(child, "type", &led->type);
+		led->default_state = led_init_default_state_get(child);
 
-		if (!fwnode_property_read_string(child, "default-state",
-						 &state)) {
-			if (!strcmp(state, "keep"))
-				led->default_state = LEDS_GPIO_DEFSTATE_KEEP;
-			else if (!strcmp(state, "on"))
-				led->default_state = LEDS_GPIO_DEFSTATE_ON;
-			else
-				led->default_state = LEDS_GPIO_DEFSTATE_OFF;
-		} else {
-			led->default_state = LEDS_GPIO_DEFSTATE_OFF;
-		}
+		fwnode_property_read_u32(child, "type", &led->type);
 	}
 
 	pdata->num_leds = chip->bits;
@@ -578,13 +567,11 @@ static int pca955x_probe(struct i2c_client *client)
 			led->brightness_set_blocking = pca955x_led_set;
 			led->brightness_get = pca955x_led_get;
 
-			if (pdata->leds[i].default_state ==
-			    LEDS_GPIO_DEFSTATE_OFF) {
+			if (pdata->leds[i].default_state == LEDS_DEFSTATE_OFF) {
 				err = pca955x_led_set(led, LED_OFF);
 				if (err)
 					return err;
-			} else if (pdata->leds[i].default_state ==
-				   LEDS_GPIO_DEFSTATE_ON) {
+			} else if (pdata->leds[i].default_state == LEDS_DEFSTATE_ON) {
 				err = pca955x_led_set(led, LED_FULL);
 				if (err)
 					return err;
@@ -623,8 +610,7 @@ static int pca955x_probe(struct i2c_client *client)
 			 * brightness to see if it's using PWM1. If so, PWM1
 			 * should not be written below.
 			 */
-			if (pdata->leds[i].default_state ==
-			    LEDS_GPIO_DEFSTATE_KEEP) {
+			if (pdata->leds[i].default_state == LEDS_DEFSTATE_KEEP) {
 				if (led->brightness != LED_FULL &&
 				    led->brightness != LED_OFF &&
 				    led->brightness != LED_HALF)
-- 
2.35.1


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[PATCH v2 09/11] leds: pm8058: Get rid of custom led_init_default_state_get()

[Andy Shevchenko]

LED core provides a helper to parse default state from firmware node.
Use it instead of custom implementation.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/leds/leds-pm8058.c | 29 +++++++++++++++--------------
 1 file changed, 15 insertions(+), 14 deletions(-)

diff --git a/drivers/leds/leds-pm8058.c b/drivers/leds/leds-pm8058.c
index fb2ab72c0c40..b9233f14b646 100644
--- a/drivers/leds/leds-pm8058.c
+++ b/drivers/leds/leds-pm8058.c
@@ -93,8 +93,8 @@ static int pm8058_led_probe(struct platform_device *pdev)
 	struct device_node *np;
 	int ret;
 	struct regmap *map;
-	const char *state;
 	enum led_brightness maxbright;
+	enum led_default_state state;
 
 	led = devm_kzalloc(dev, sizeof(*led), GFP_KERNEL);
 	if (!led)
@@ -125,25 +125,26 @@ static int pm8058_led_probe(struct platform_device *pdev)
 		maxbright = 15; /* 4 bits */
 	led->cdev.max_brightness = maxbright;
 
-	state = of_get_property(np, "default-state", NULL);
-	if (state) {
-		if (!strcmp(state, "keep")) {
-			led->cdev.brightness = pm8058_led_get(&led->cdev);
-		} else if (!strcmp(state, "on")) {
-			led->cdev.brightness = maxbright;
-			pm8058_led_set(&led->cdev, maxbright);
-		} else {
-			led->cdev.brightness = LED_OFF;
-			pm8058_led_set(&led->cdev, LED_OFF);
-		}
+	init_data.fwnode = of_fwnode_handle(np);
+
+	state = led_init_default_state_get(init_data.fwnode);
+	switch (state) {
+	case LEDS_DEFSTATE_ON:
+		led->cdev.brightness = maxbright;
+		pm8058_led_set(&led->cdev, maxbright);
+		break;
+	case LEDS_DEFSTATE_KEEP:
+		led->cdev.brightness = pm8058_led_get(&led->cdev);
+		break;
+	default:
+		led->cdev.brightness = LED_OFF;
+		pm8058_led_set(&led->cdev, LED_OFF);
 	}
 
 	if (led->ledtype == PM8058_LED_TYPE_KEYPAD ||
 	    led->ledtype == PM8058_LED_TYPE_FLASH)
 		led->cdev.flags	= LED_CORE_SUSPENDRESUME;
 
-	init_data.fwnode = of_fwnode_handle(np);
-
 	ret = devm_led_classdev_register_ext(dev, &led->cdev, &init_data);
 	if (ret)
 		dev_err(dev, "Failed to register LED for %pOF\n", np);
-- 
2.35.1


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[PATCH v2 10/11] leds: syscon: Get rid of custom led_init_default_state_get()

[Andy Shevchenko]

LED core provides a helper to parse default state from firmware node.
Use it instead of custom implementation.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/leds/leds-syscon.c | 49 ++++++++++++++++++--------------------
 1 file changed, 23 insertions(+), 26 deletions(-)

diff --git a/drivers/leds/leds-syscon.c b/drivers/leds/leds-syscon.c
index 7eddb8ecb44e..e38abb5e60c1 100644
--- a/drivers/leds/leds-syscon.c
+++ b/drivers/leds/leds-syscon.c
@@ -61,7 +61,8 @@ static int syscon_led_probe(struct platform_device *pdev)
 	struct device *parent;
 	struct regmap *map;
 	struct syscon_led *sled;
-	const char *state;
+	enum led_default_state state;
+	u32 value;
 	int ret;
 
 	parent = dev->parent;
@@ -86,34 +87,30 @@ static int syscon_led_probe(struct platform_device *pdev)
 	if (of_property_read_u32(np, "mask", &sled->mask))
 		return -EINVAL;
 
-	state = of_get_property(np, "default-state", NULL);
-	if (state) {
-		if (!strcmp(state, "keep")) {
-			u32 val;
-
-			ret = regmap_read(map, sled->offset, &val);
-			if (ret < 0)
-				return ret;
-			sled->state = !!(val & sled->mask);
-		} else if (!strcmp(state, "on")) {
-			sled->state = true;
-			ret = regmap_update_bits(map, sled->offset,
-						 sled->mask,
-						 sled->mask);
-			if (ret < 0)
-				return ret;
-		} else {
-			sled->state = false;
-			ret = regmap_update_bits(map, sled->offset,
-						 sled->mask, 0);
-			if (ret < 0)
-				return ret;
-		}
+	init_data.fwnode = of_fwnode_handle(np);
+
+	state = led_init_default_state_get(init_data.fwnode);
+	switch (state) {
+	case LEDS_DEFSTATE_ON:
+		ret = regmap_update_bits(map, sled->offset, sled->mask, sled->mask);
+		if (ret < 0)
+			return ret;
+		sled->state = true;
+		break;
+	case LEDS_DEFSTATE_KEEP:
+		ret = regmap_read(map, sled->offset, &value);
+		if (ret < 0)
+			return ret;
+		sled->state = !!(value & sled->mask);
+		break;
+	default:
+		ret = regmap_update_bits(map, sled->offset, sled->mask, 0);
+		if (ret < 0)
+			return ret;
+		sled->state = false;
 	}
 	sled->cdev.brightness_set = syscon_led_set;
 
-	init_data.fwnode = of_fwnode_handle(np);
-
 	ret = devm_led_classdev_register_ext(dev, &sled->cdev, &init_data);
 	if (ret < 0)
 		return ret;
-- 
2.35.1


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[PATCH v2 11/11] net: dsa: hellcreek: Get rid of custom led_init_default_state_get()

[Andy Shevchenko]

LED core provides a helper to parse default state from firmware node.
Use it instead of custom implementation.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/net/dsa/hirschmann/hellcreek_ptp.c | 45 ++++++++++++----------
 1 file changed, 24 insertions(+), 21 deletions(-)

diff --git a/drivers/net/dsa/hirschmann/hellcreek_ptp.c b/drivers/net/dsa/hirschmann/hellcreek_ptp.c
index b28baab6d56a..793b2c296314 100644
--- a/drivers/net/dsa/hirschmann/hellcreek_ptp.c
+++ b/drivers/net/dsa/hirschmann/hellcreek_ptp.c
@@ -297,7 +297,8 @@ static enum led_brightness hellcreek_led_is_gm_get(struct led_classdev *ldev)
 static int hellcreek_led_setup(struct hellcreek *hellcreek)
 {
 	struct device_node *leds, *led = NULL;
-	const char *label, *state;
+	enum led_default_state state;
+	const char *label;
 	int ret = -EINVAL;
 
 	of_node_get(hellcreek->dev->of_node);
@@ -318,16 +319,17 @@ static int hellcreek_led_setup(struct hellcreek *hellcreek)
 	ret = of_property_read_string(led, "label", &label);
 	hellcreek->led_sync_good.name = ret ? "sync_good" : label;
 
-	ret = of_property_read_string(led, "default-state", &state);
-	if (!ret) {
-		if (!strcmp(state, "on"))
-			hellcreek->led_sync_good.brightness = 1;
-		else if (!strcmp(state, "off"))
-			hellcreek->led_sync_good.brightness = 0;
-		else if (!strcmp(state, "keep"))
-			hellcreek->led_sync_good.brightness =
-				hellcreek_get_brightness(hellcreek,
-							 STATUS_OUT_SYNC_GOOD);
+	state = led_init_default_state_get(of_fwnode_handle(led));
+	switch (state) {
+	case LEDS_DEFSTATE_ON:
+		hellcreek->led_sync_good.brightness = 1;
+		break;
+	case LEDS_DEFSTATE_KEEP:
+		hellcreek->led_sync_good.brightness =
+				hellcreek_get_brightness(hellcreek, STATUS_OUT_SYNC_GOOD);
+		break;
+	default:
+		hellcreek->led_sync_good.brightness = 0;
 	}
 
 	hellcreek->led_sync_good.max_brightness = 1;
@@ -344,16 +346,17 @@ static int hellcreek_led_setup(struct hellcreek *hellcreek)
 	ret = of_property_read_string(led, "label", &label);
 	hellcreek->led_is_gm.name = ret ? "is_gm" : label;
 
-	ret = of_property_read_string(led, "default-state", &state);
-	if (!ret) {
-		if (!strcmp(state, "on"))
-			hellcreek->led_is_gm.brightness = 1;
-		else if (!strcmp(state, "off"))
-			hellcreek->led_is_gm.brightness = 0;
-		else if (!strcmp(state, "keep"))
-			hellcreek->led_is_gm.brightness =
-				hellcreek_get_brightness(hellcreek,
-							 STATUS_OUT_IS_GM);
+	state = led_init_default_state_get(of_fwnode_handle(led));
+	switch (state) {
+	case LEDS_DEFSTATE_ON:
+		hellcreek->led_is_gm.brightness = 1;
+		break;
+	case LEDS_DEFSTATE_KEEP:
+		hellcreek->led_is_gm.brightness =
+				hellcreek_get_brightness(hellcreek, STATUS_OUT_IS_GM);
+		break;
+	default:
+		hellcreek->led_is_gm.brightness = 0;
 	}
 
 	hellcreek->led_is_gm.max_brightness = 1;
-- 
2.35.1


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Re: [PATCH v2 11/11] net: dsa: hellcreek: Get rid of custom led_init_default_state_get()

[Kurt Kanzenbach]

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On Fri Aug 05 2022, Andy Shevchenko wrote:
> LED core provides a helper to parse default state from firmware node.
> Use it instead of custom implementation.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

Reviewed-by: Kurt Kanzenbach <kurt@linutronix.de>

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