[PATCH 2/2] leds: rgb: lp5860: add enable-gpio

[Steffen Trumtrar]

The VIO_EN pin can either be connected with VIO power supply or GPIO.
Get the GPIO from DT if provided and set it on chip enable and disable.

Signed-off-by: Steffen Trumtrar <s.trumtrar@xxxxxxxxxxxxxx>
---
 drivers/leds/rgb/leds-lp5860-core.c       | 10 ++++++++++
 include/linux/platform_data/leds-lp5860.h |  1 +
 2 files changed, 11 insertions(+)

diff --git a/drivers/leds/rgb/leds-lp5860-core.c b/drivers/leds/rgb/leds-lp5860-core.c
index 28b4d86e11f1a..1f349aa53f7a9 100644
--- a/drivers/leds/rgb/leds-lp5860-core.c
+++ b/drivers/leds/rgb/leds-lp5860-core.c
@@ -61,6 +61,9 @@ static int lp5860_set_mc_brightness(struct led_classdev *cdev,
 
 static int lp5860_chip_enable_toggle(struct lp5860 *led, int enable)
 {
+	if (led->enable_gpiod)
+		gpiod_direction_output(led->enable_gpiod, enable);
+
 	return regmap_write(led->regmap, LP5860_REG_CHIP_EN, enable);
 }
 
@@ -170,6 +173,13 @@ int lp5860_device_init(struct device *dev)
 	struct lp5860 *lp = dev_get_drvdata(dev);
 	int ret;
 
+	lp->enable_gpiod = devm_gpiod_get_optional(lp->dev, "enable", GPIOD_ASIS);
+	if (IS_ERR(lp->enable_gpiod))
+		return PTR_ERR(lp->enable_gpiod);
+
+	if (lp->enable_gpiod)
+		gpiod_set_consumer_name(lp->enable_gpiod, "LP5860 VIO enable");
+
 	ret = lp5860_chip_enable_toggle(lp, LP5860_CHIP_ENABLE);
 	if (ret)
 		return ret;
diff --git a/include/linux/platform_data/leds-lp5860.h b/include/linux/platform_data/leds-lp5860.h
index 7bc69a7a550dd..7258d0674ce59 100644
--- a/include/linux/platform_data/leds-lp5860.h
+++ b/include/linux/platform_data/leds-lp5860.h
@@ -257,6 +257,7 @@ struct lp5860_led {
 struct lp5860 {
 	struct device *dev;
 	struct regmap *regmap;
+	struct gpio_desc *enable_gpiod;
 	unsigned int leds_count;
 
 	DECLARE_FLEX_ARRAY(struct lp5860_led, leds);

-- 
2.51.0