leds: leds-lp55xx: Generalize multicolor_brightness function

Generalize multicolor_brightness function as the implementation is the
same for most of the lp55xx based LED driver.

Suggested-by: Lee Jones <lee@kernel.org>
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Link: https://lore.kernel.org/r/20240626160027.19703-12-ansuelsmth@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>

Author: Ansuel

drivers/leds/leds-lp5521.c

@@ -222,25 +222,6 @@ static int lp5521_run_selftest(struct lp55xx_chip *chip, char *buf)
 	return 0;
 }
 
-static int lp5521_multicolor_brightness(struct lp55xx_led *led)
-{
-	struct lp55xx_chip *chip = led->chip;
-	int ret;
-	int i;
-
-	mutex_lock(&chip->lock);
-	for (i = 0; i < led->mc_cdev.num_colors; i++) {
-		ret = lp55xx_write(chip,
-				   LP5521_REG_LED_PWM_BASE +
-				   led->mc_cdev.subled_info[i].channel,
-				   led->mc_cdev.subled_info[i].brightness);
-		if (ret)
-			break;
-	}
-	mutex_unlock(&chip->lock);
-	return ret;
-}
-
 static ssize_t show_engine_mode(struct device *dev,
 				struct device_attribute *attr,
 				char *buf, int nr)
@@ -381,7 +362,7 @@ static struct lp55xx_device_config lp5521_cfg = {
 	.max_channel  = LP5521_MAX_LEDS,
 	.post_init_device   = lp5521_post_init_device,
 	.brightness_fn      = lp55xx_led_brightness,
-	.multicolor_brightness_fn = lp5521_multicolor_brightness,
+	.multicolor_brightness_fn = lp55xx_multicolor_brightness,
 	.set_led_current    = lp5521_set_led_current,
 	.firmware_cb        = lp55xx_firmware_loaded_cb,
 	.run_engine         = lp5521_run_engine,

drivers/leds/leds-lp5523.c

@@ -664,25 +664,6 @@ static ssize_t store_master_fader_leds(struct device *dev,
 	return ret;
 }
 
-static int lp5523_multicolor_brightness(struct lp55xx_led *led)
-{
-	struct lp55xx_chip *chip = led->chip;
-	int ret;
-	int i;
-
-	mutex_lock(&chip->lock);
-	for (i = 0; i < led->mc_cdev.num_colors; i++) {
-		ret = lp55xx_write(chip,
-				   LP5523_REG_LED_PWM_BASE +
-				   led->mc_cdev.subled_info[i].channel,
-				   led->mc_cdev.subled_info[i].brightness);
-		if (ret)
-			break;
-	}
-	mutex_unlock(&chip->lock);
-	return ret;
-}
-
 static LP55XX_DEV_ATTR_RW(engine1_mode, show_engine1_mode, store_engine1_mode);
 static LP55XX_DEV_ATTR_RW(engine2_mode, show_engine2_mode, store_engine2_mode);
 static LP55XX_DEV_ATTR_RW(engine3_mode, show_engine3_mode, store_engine3_mode);
@@ -754,7 +735,7 @@ static struct lp55xx_device_config lp5523_cfg = {
 	.max_channel  = LP5523_MAX_LEDS,
 	.post_init_device   = lp5523_post_init_device,
 	.brightness_fn      = lp55xx_led_brightness,
-	.multicolor_brightness_fn = lp5523_multicolor_brightness,
+	.multicolor_brightness_fn = lp55xx_multicolor_brightness,
 	.set_led_current    = lp5523_set_led_current,
 	.firmware_cb        = lp55xx_firmware_loaded_cb,
 	.run_engine         = lp5523_run_engine,

drivers/leds/leds-lp55xx-common.c

@@ -256,6 +256,27 @@ int lp55xx_led_brightness(struct lp55xx_led *led)
 }
 EXPORT_SYMBOL_GPL(lp55xx_led_brightness);
 
+int lp55xx_multicolor_brightness(struct lp55xx_led *led)
+{
+	struct lp55xx_chip *chip = led->chip;
+	const struct lp55xx_device_config *cfg = chip->cfg;
+	int ret;
+	int i;
+
+	mutex_lock(&chip->lock);
+	for (i = 0; i < led->mc_cdev.num_colors; i++) {
+		ret = lp55xx_write(chip,
+				   cfg->reg_led_pwm_base.addr +
+				   led->mc_cdev.subled_info[i].channel,
+				   led->mc_cdev.subled_info[i].brightness);
+		if (ret)
+			break;
+	}
+	mutex_unlock(&chip->lock);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(lp55xx_multicolor_brightness);
+
 static void lp55xx_reset_device(struct lp55xx_chip *chip)
 {
 	const struct lp55xx_device_config *cfg = chip->cfg;

drivers/leds/leds-lp55xx-common.h

@@ -216,6 +216,7 @@ extern int lp55xx_update_program_memory(struct lp55xx_chip *chip,
 					const u8 *data, size_t size);
 extern void lp55xx_firmware_loaded_cb(struct lp55xx_chip *chip);
 extern int lp55xx_led_brightness(struct lp55xx_led *led);
+extern int lp55xx_multicolor_brightness(struct lp55xx_led *led);
 
 /* common probe/remove function */
 extern int lp55xx_probe(struct i2c_client *client);