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Code Issues Releases Wiki Activity

leds: lp55xx: initialise output direction from dts 

Commit a5d3d1adc9 ("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: a5d3d1adc9 ("leds: lp55xx: Initialize enable GPIO direction to output")
Fixes: 92a81562e6 ("leds: lp55xx: Add multicolor framework support to lp55xx")
Fixes: ac219bf3c9 ("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>
This commit is contained in:
Merlijn Wajer 2021-12-12 23:40:07 +01:00 committed by Pavel Machek
parent e9af026a3b
commit 9e87a8da74
1 changed files with 3 additions and 1 deletions
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4
drivers/leds/leds-lp55xx-common.c
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@ -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);