[PATCH v29 14/16] leds: lp5521: Add multicolor framework multicolor brightness support

Dan Murphy
2020-06-22T19:00:45Z

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 <pavel@ucw.cz>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Dan Murphy <dmurphy@ti.com>
---
drivers/leds/leds-lp5521.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)

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,
--
2.26.2