linux-kernel - [PATCH v10 14/16] leds: lp5521: Add multicolor framework intensity support

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Message-ID: <20191001145620.11123-15-dmurphy@ti.com>
Date:   Tue, 1 Oct 2019 09:56:18 -0500
From:   Dan Murphy <dmurphy@...com>
To:     <jacek.anaszewski@...il.com>, <pavel@....cz>
CC:     <linux-leds@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Dan Murphy <dmurphy@...com>
Subject: [PATCH v10 14/16] leds: lp5521: Add multicolor framework intensity support

Add the intensity function call back to support the multicolor
framework. This function allows setting a specific brightness on
a specific channel.

Signed-off-by: Dan Murphy <dmurphy@...com>
---
 drivers/leds/leds-lp5521.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/leds/leds-lp5521.c b/drivers/leds/leds-lp5521.c
index 6f0272249dc8..9c71f0fe7bf8 100644
--- a/drivers/leds/leds-lp5521.c
+++ b/drivers/leds/leds-lp5521.c
@@ -349,6 +349,19 @@ static int lp5521_run_selftest(struct lp55xx_chip *chip, char *buf)
 	return 0;
 }
 
+static int lp5521_led_intensity(struct lp55xx_led *led, int chan_num,
+				int brightness)
+{
+	struct lp55xx_chip *chip = led->chip;
+	int ret;
+
+	mutex_lock(&chip->lock);
+	ret = lp55xx_write(chip, LP5521_REG_LED_PWM_BASE + chan_num,
+			   brightness);
+	mutex_unlock(&chip->lock);
+	return ret;
+}
+
 static int lp5521_led_brightness(struct lp55xx_led *led)
 {
 	struct lp55xx_chip *chip = led->chip;
@@ -490,6 +503,7 @@ static struct lp55xx_device_config lp5521_cfg = {
 	.max_channel  = LP5521_MAX_LEDS,
 	.post_init_device   = lp5521_post_init_device,
 	.brightness_fn      = lp5521_led_brightness,
+	.color_intensity_fn = lp5521_led_intensity,
 	.set_led_current    = lp5521_set_led_current,
 	.firmware_cb        = lp5521_firmware_loaded,
 	.run_engine         = lp5521_run_engine,
-- 
2.22.0.214.g8dca754b1e