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leds: lp5562: Add multicolor brightness control

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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: Michal Vokáč <michal.vokac@ysoft.com>
Link: https://lore.kernel.org/r/20241009095635.2790613-1-michal.vokac@ysoft.com
Signed-off-by: Lee Jones <lee@kernel.org>
This commit is contained in:
Michal Vokáč 2024-10-09 11:56:35 +02:00 committed by Lee Jones
parent c161656b48
commit 681d5fa644
1 changed files with 25 additions and 0 deletions
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25
drivers/leds/leds-lp5562.c
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@ -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,