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authorJack Chen <zenghuchen@google.com>2024-08-01 17:30:48 +0200
committerLee Jones <lee@kernel.org>2024-08-05 16:15:27 +0200
commit70a4375e07fcbb771809f0af8b5f0df029ca660f (patch)
tree746c8b03f55ce604ecc98003aa23a12c80bf3b55 /drivers/leds
parentleds: flash: leds-qcom-flash: Limit LED current based on thermal condition (diff)
downloadlinux-70a4375e07fcbb771809f0af8b5f0df029ca660f.tar.xz
linux-70a4375e07fcbb771809f0af8b5f0df029ca660f.zip
leds: lm3601x: Reset LED controller during probe
LED controller should be reset during initialization to avoid abnormal behaviors. For example, when power to SoC is recycled but power to LED controller is not, LED controller should not presume to be in original state. Signed-off-by: Jack Chen <zenghuchen@google.com> Link: https://lore.kernel.org/r/20240801153048.3813581-1-zenghuchen@google.com Signed-off-by: Lee Jones <lee@kernel.org>
Diffstat (limited to 'drivers/leds')
-rw-r--r--drivers/leds/flash/leds-lm3601x.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/leds/flash/leds-lm3601x.c b/drivers/leds/flash/leds-lm3601x.c
index 1a6b9ee9e582..abf6b96ade3d 100644
--- a/drivers/leds/flash/leds-lm3601x.c
+++ b/drivers/leds/flash/leds-lm3601x.c
@@ -443,6 +443,10 @@ static int lm3601x_probe(struct i2c_client *client)
return ret;
}
+ ret = regmap_write(led->regmap, LM3601X_DEV_ID_REG, LM3601X_SW_RESET);
+ if (ret)
+ dev_warn(&client->dev, "Failed to reset the LED controller\n");
+
mutex_init(&led->lock);
return lm3601x_register_leds(led, fwnode);