Merge tag 'leds-next-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds

Pull LED updates from Lee Jones:
 "Core Frameworks:
   - Add support for a bunch more colours

  New Drivers:
   - Add support for Kinetic KTD2026/7 RGB/White LEDs

  New Functionality:
   - Add support for device to enter HW Controlled Mode to Turris Omnia
     LEDs
   - Add support for HW Gamma Correction to Turris Omnia LEDs

  Fix-ups:
   - Apply new __counted_by() annotation to several data structures
     containing flexible arrays
   - Rid the return value from Platform's .remove() operation
   - Use *_cansleep() variants for instances were threads can sleep
   - Improve the semantics when setting the brightness
   - Generic clean-ups; code reduction, coding style, standard patterns
   - Replace strncpy() with strscpy()
   - Fix-up / add various documentation
   - Re-author the GPIO associated Trigger to use trigger-sources
   - Move to using standard APIs and helpers
   - Improve error checking
   - Stop using static GPIO bases

  Bug Fixes:
   - Fix Pointer to Enum casing warnings
   - Do not pretend that I2C backed device supports SMBUS
   - Ensure PWM LEDs are extinguished when disabled, rather than held in
     a state
   - Fix 'output may be truncated' warnings"

* tag 'leds-next-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds: (43 commits)
  leds: lp5521: Add an error check in lp5521_post_init_device
  leds: gpio: Update headers
  leds: gpio: Remove unneeded assignment
  leds: gpio: Move temporary variable for struct device to gpio_led_probe()
  leds: gpio: Refactor code to use devm_gpiod_get_index_optional()
  leds: gpio: Utilise PTR_ERR_OR_ZERO()
  leds: gpio: Keep driver firmware interface agnostic
  leds: core: Refactor led_update_brightness() to use standard pattern
  leds: turris-omnia: Fix brightness setting and trigger activating
  leds: sc27xx: Move mutex_init() down
  leds: trigger: netdev: Move size check in set_device_name
  leds: Add ktd202x driver
  dt-bindings: leds: Add Kinetic KTD2026/2027 LED
  leds: core: Add more colors from DT bindings to led_colors
  dt-bindings: leds: Last color ID is now 14 (LED_COLOR_ID_LIME)
  leds: tca6507: Don't use fixed GPIO base
  leds: lp3952: Convert to use maple tree register cache
  leds: lm392x: Convert to use maple tree register cache
  leds: aw200xx: Convert to use maple tree register cache
  leds: lm3601x: Convert to use maple tree register cache
  ...

1 files changed, 27 insertions, 29 deletions

diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
index 7bfe40a6bfdd..710c319ad312 100644
--- a/drivers/leds/leds-gpio.c
+++ b/drivers/leds/leds-gpio.c
@@ -6,17 +6,21 @@
  * Raphael Assenat <raph@8d.com>
  * Copyright (C) 2008 Freescale Semiconductor, Inc.
  */
+#include <linux/container_of.h>
+#include <linux/device.h>
 #include <linux/err.h>
 #include <linux/gpio.h>
 #include <linux/gpio/consumer.h>
-#include <linux/kernel.h>
 #include <linux/leds.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/of.h>
+#include <linux/overflow.h>
 #include <linux/pinctrl/consumer.h>
 #include <linux/platform_device.h>
 #include <linux/property.h>
 #include <linux/slab.h>
+#include <linux/types.h>
+
 #include "leds.h"
 
 struct gpio_led_data {
@@ -125,16 +129,13 @@ static int create_gpio_led(const struct gpio_led *template,
 		return ret;
 
 	pinctrl = devm_pinctrl_get_select_default(led_dat->cdev.dev);
-	if (IS_ERR(pinctrl)) {
-		ret = PTR_ERR(pinctrl);
-		if (ret != -ENODEV) {
-			dev_warn(led_dat->cdev.dev,
-				 "Failed to select %pOF pinctrl: %d\n",
-				 to_of_node(fwnode), ret);
-		} else {
-			/* pinctrl-%d not present, not an error */
-			ret = 0;
-		}
+	ret = PTR_ERR_OR_ZERO(pinctrl);
+	/* pinctrl-%d not present, not an error */
+	if (ret == -ENODEV)
+		ret = 0;
+	if (ret) {
+		dev_warn(led_dat->cdev.dev, "Failed to select %pfw pinctrl: %d\n",
+			 fwnode, ret);
 	}
 
 	return ret;
@@ -142,12 +143,11 @@ static int create_gpio_led(const struct gpio_led *template,
 
 struct gpio_leds_priv {
 	int num_leds;
-	struct gpio_led_data leds[];
+	struct gpio_led_data leds[] __counted_by(num_leds);
 };
 
-static struct gpio_leds_priv *gpio_leds_create(struct platform_device *pdev)
+static struct gpio_leds_priv *gpio_leds_create(struct device *dev)
 {
-	struct device *dev = &pdev->dev;
 	struct fwnode_handle *child;
 	struct gpio_leds_priv *priv;
 	int count, ret;
@@ -221,13 +221,13 @@ static struct gpio_desc *gpio_led_get_gpiod(struct device *dev, int idx,
 	 * device, this will hit the board file, if any and get
 	 * the GPIO from there.
 	 */
-	gpiod = devm_gpiod_get_index(dev, NULL, idx, GPIOD_OUT_LOW);
-	if (!IS_ERR(gpiod)) {
+	gpiod = devm_gpiod_get_index_optional(dev, NULL, idx, GPIOD_OUT_LOW);
+	if (IS_ERR(gpiod))
+		return gpiod;
+	if (gpiod) {
 		gpiod_set_consumer_name(gpiod, template->name);
 		return gpiod;
 	}
-	if (PTR_ERR(gpiod) != -ENOENT)
-		return gpiod;
 
 	/*
 	 * This is the legacy code path for platform code that
@@ -256,13 +256,13 @@ static struct gpio_desc *gpio_led_get_gpiod(struct device *dev, int idx,
 
 static int gpio_led_probe(struct platform_device *pdev)
 {
-	struct gpio_led_platform_data *pdata = dev_get_platdata(&pdev->dev);
+	struct device *dev = &pdev->dev;
+	struct gpio_led_platform_data *pdata = dev_get_platdata(dev);
 	struct gpio_leds_priv *priv;
-	int i, ret = 0;
+	int i, ret;
 
 	if (pdata && pdata->num_leds) {
-		priv = devm_kzalloc(&pdev->dev, struct_size(priv, leds, pdata->num_leds),
-				    GFP_KERNEL);
+		priv = devm_kzalloc(dev, struct_size(priv, leds, pdata->num_leds), GFP_KERNEL);
 		if (!priv)
 			return -ENOMEM;
 
@@ -275,22 +275,20 @@ static int gpio_led_probe(struct platform_device *pdev)
 				led_dat->gpiod = template->gpiod;
 			else
 				led_dat->gpiod =
-					gpio_led_get_gpiod(&pdev->dev,
-							   i, template);
+					gpio_led_get_gpiod(dev, i, template);
 			if (IS_ERR(led_dat->gpiod)) {
-				dev_info(&pdev->dev, "Skipping unavailable LED gpio %d (%s)\n",
+				dev_info(dev, "Skipping unavailable LED gpio %d (%s)\n",
 					 template->gpio, template->name);
 				continue;
 			}
 
-			ret = create_gpio_led(template, led_dat,
-					      &pdev->dev, NULL,
+			ret = create_gpio_led(template, led_dat, dev, NULL,
 					      pdata->gpio_blink_set);
 			if (ret < 0)
 				return ret;
 		}
 	} else {
-		priv = gpio_leds_create(pdev);
+		priv = gpio_leds_create(dev);
 		if (IS_ERR(priv))
 			return PTR_ERR(priv);
 	}