diff options
| author | Michal Vokáč <michal.vokac@ysoft.com> | 2024-10-09 11:56:35 +0200 |
|---|---|---|
| committer | Lee Jones <lee@kernel.org> | 2024-10-15 12:58:41 +0100 |
| commit | 681d5fa6440cf0fd3f561638c598db18aa77e641 (patch) | |
| tree | 6ee6c69ae7f2d950814f0d9fbd0a8c2519a87763 /drivers/leds | |
| parent | c161656b48ee22e51804d26fcc11bbcd2486d697 (diff) | |
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: 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>
Diffstat (limited to 'drivers/leds')
| -rw-r--r-- | drivers/leds/leds-lp5562.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/leds/leds-lp5562.c b/drivers/leds/leds-lp5562.c index b26bcc81d079..14a4af361b26 100644 --- a/drivers/leds/leds-lp5562.c +++ b/drivers/leds/leds-lp5562.c @@ -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, |