From 9e87a8da747bf72365abb79e6f64fcca955b4f56 Mon Sep 17 00:00:00 2001
From: Merlijn Wajer <merlijn@wizzup.org>
Date: Sun, 12 Dec 2021 23:40:07 +0100
Subject: [PATCH] leds: lp55xx: initialise output direction from dts
Git-commit: 9e87a8da747bf72365abb79e6f64fcca955b4f56
Patch-mainline: v5.17-rc1
References: git-fixes
Commit a5d3d1adc95f ("leds: lp55xx: Initialize enable GPIO direction to
output") attempts to fix this, but the fix did not work since at least
for the Nokia N900 the value needs to be set to HIGH, per the device
tree. So rather than hardcoding the value to a potentially invalid value
for some devices, let's set direction in lp55xx_init_device.
Fixes: a5d3d1adc95f ("leds: lp55xx: Initialize enable GPIO direction to output")
Fixes: 92a81562e695 ("leds: lp55xx: Add multicolor framework support to lp55xx")
Fixes: ac219bf3c9bd ("leds: lp55xx: Convert to use GPIO descriptors")
Signed-off-by: Merlijn Wajer <merlijn@wizzup.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/leds/leds-lp55xx-common.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/leds/leds-lp55xx-common.c b/drivers/leds/leds-lp55xx-common.c
index d1657c46ee2f..9fdfc1b9a1a0 100644
--- a/drivers/leds/leds-lp55xx-common.c
+++ b/drivers/leds/leds-lp55xx-common.c
@@ -439,6 +439,8 @@ int lp55xx_init_device(struct lp55xx_chip *chip)
return -EINVAL;
if (pdata->enable_gpiod) {
+ gpiod_direction_output(pdata->enable_gpiod, 0);
+
gpiod_set_consumer_name(pdata->enable_gpiod, "LP55xx enable");
gpiod_set_value(pdata->enable_gpiod, 0);
usleep_range(1000, 2000); /* Keep enable down at least 1ms */
@@ -694,7 +696,7 @@ struct lp55xx_platform_data *lp55xx_of_populate_pdata(struct device *dev,
of_property_read_u8(np, "clock-mode", &pdata->clock_mode);
pdata->enable_gpiod = devm_gpiod_get_optional(dev, "enable",
- GPIOD_OUT_LOW);
+ GPIOD_ASIS);
if (IS_ERR(pdata->enable_gpiod))
return ERR_CAST(pdata->enable_gpiod);
--
2.31.1