[PATCH v12 13/16] leds: lp5523: Update the lp5523 code to add intensity function

[Dan Murphy]

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 <dmur...@ti.com>
---
 drivers/leds/leds-lp5523.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c
index d0b931a136b9..5d6002e4d657 100644
--- a/drivers/leds/leds-lp5523.c
+++ b/drivers/leds/leds-lp5523.c
@@ -791,6 +791,25 @@ static ssize_t store_master_fader_leds(struct device *dev,
        return ret;
 }
 
+static int lp5523_led_intensity(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_leds; i++) {
+               ret = lp55xx_write(chip,
+                                  LP5523_REG_LED_PWM_BASE +
+                                  led->color_component[i].output_num,
+                                  led->color_component[i].brightness);
+               if (ret)
+                       break;
+       }
+       mutex_unlock(&chip->lock);
+       return ret;
+}
+
 static int lp5523_led_brightness(struct lp55xx_led *led)
 {
        struct lp55xx_chip *chip = led->chip;
@@ -857,6 +876,7 @@ static struct lp55xx_device_config lp5523_cfg = {
        .max_channel  = LP5523_MAX_LEDS,
        .post_init_device   = lp5523_post_init_device,
        .brightness_fn      = lp5523_led_brightness,
+       .color_intensity_fn = lp5523_led_intensity,
        .set_led_current    = lp5523_set_led_current,
        .firmware_cb        = lp5523_firmware_loaded,
        .run_engine         = lp5523_run_engine,
-- 
2.22.0.214.g8dca754b1e