leds: flash: leds-qcom-flash: Disable LED when changing brightness

The Qualcomm PMI8998 PMIC requires the LED to be disabled when configuring
the brightness. Always disable the LED when setting the brightness and
re-enable it afterwards.

Signed-off-by: Dylan Van Assche <me@dylanvanassche.be>
Link: https://lore.kernel.org/r/20230507172941.364852-3-me@dylanvanassche.be
Signed-off-by: Lee Jones <lee@kernel.org>

diff --git a/drivers/leds/flash/leds-qcom-flash.c b/drivers/leds/flash/leds-qcom-flash.c
index 16045b5..c8d41a3 100644 (file)
--- a/drivers/leds/flash/leds-qcom-flash.c
+++ b/drivers/leds/flash/leds-qcom-flash.c
@@ -417,6 +417,14 @@ static int qcom_flash_led_brightness_set(struct led_classdev *led_cdev,
        bool enable = !!brightness;
        int rc;
 
+       rc = set_flash_strobe(led, SW_STROBE, false);
+       if (rc)
+               return rc;
+
+       rc = set_flash_module_en(led, false);
+       if (rc)
+               return rc;
+
        rc = set_flash_current(led, current_ma, TORCH_MODE);
        if (rc)
                return rc;