From 00253ec2c9849c2a1101818565c7f4c09dbef327 Mon Sep 17 00:00:00 2001 From: Dan Murphy Date: Thu, 16 Jul 2020 13:20:04 -0500 Subject: leds: lp5521: Add multicolor framework multicolor brightness support Add the multicolor brightness call back to support the multicolor framework. This function allows setting the brightness across grouped LED channels in a single call. Acked-by: Pavel Machek Acked-by: Jacek Anaszewski Signed-off-by: Dan Murphy Signed-off-by: Pavel Machek --- drivers/leds/leds-lp5521.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'drivers') diff --git a/drivers/leds/leds-lp5521.c b/drivers/leds/leds-lp5521.c index 6ff81d6be789..ef8c3bfa8f3c 100644 --- a/drivers/leds/leds-lp5521.c +++ b/drivers/leds/leds-lp5521.c @@ -349,6 +349,25 @@ 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 int lp5521_led_brightness(struct lp55xx_led *led) { struct lp55xx_chip *chip = led->chip; @@ -490,6 +509,7 @@ static struct lp55xx_device_config lp5521_cfg = { .max_channel = LP5521_MAX_LEDS, .post_init_device = lp5521_post_init_device, .brightness_fn = lp5521_led_brightness, + .multicolor_brightness_fn = lp5521_multicolor_brightness, .set_led_current = lp5521_set_led_current, .firmware_cb = lp5521_firmware_loaded, .run_engine = lp5521_run_engine, -- cgit v1.2.3