Commit 681d5fa6 authored by Michal Vokáč's avatar Michal Vokáč Committed by Lee Jones
Browse files

leds: lp5562: Add multicolor brightness control 



The framework for multicolor brightness control is already in place
in the lp55xx-common code but the function to control the multicolor
brightness for this particular chip is still missing.

Implement the multicolor_brightness_fn function to allow multicolor
brightness control of LEDs connected to the LP5562 LED driver.

Signed-off-by: default avatarMichal Vokáč <michal.vokac@ysoft.com>
Link: https://lore.kernel.org/r/20241009095635.2790613-1-michal.vokac@ysoft.com


Signed-off-by: default avatarLee Jones <lee@kernel.org>
parent c161656b

drivers/leds/leds-lp5562.c

+25 −0
Original line number Diff line number Diff line
@@ -161,6 +161,30 @@ static int lp5562_post_init_device(struct lp55xx_chip *chip) 
	return 0;

}



static int lp5562_multicolor_brightness(struct lp55xx_led *led)

{

	struct lp55xx_chip *chip = led->chip;

	static const u8 addr[] = {

		LP5562_REG_R_PWM,

		LP5562_REG_G_PWM,

		LP5562_REG_B_PWM,

		LP5562_REG_W_PWM,

	};

	int ret;

	int i;



	guard(mutex)(&chip->lock);

	for (i = 0; i < led->mc_cdev.num_colors; i++) {

		ret = lp55xx_write(chip,

				   addr[led->mc_cdev.subled_info[i].channel],

				   led->mc_cdev.subled_info[i].brightness);

		if (ret)

			break;

	}



	return ret;

}



static int lp5562_led_brightness(struct lp55xx_led *led)

{

	struct lp55xx_chip *chip = led->chip;
@@ -364,6 +388,7 @@ static struct lp55xx_device_config lp5562_cfg = { 
	.post_init_device   = lp5562_post_init_device,

	.set_led_current    = lp5562_set_led_current,

	.brightness_fn      = lp5562_led_brightness,

	.multicolor_brightness_fn = lp5562_multicolor_brightness,

	.run_engine         = lp5562_run_engine,

	.firmware_cb        = lp55xx_firmware_loaded_cb,

	.dev_attr_group     = &lp5562_group,