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video: pwm_backlight: use regulator_set_enable_if_allowed

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With the commit 4fcba5d556 ("regulator: implement basic reference
counter") the return value of regulator_set_enable may be EALREADY or
EBUSY for fixed/gpio regulators and may be further expanded on all
regulators.

Change to use the more relaxed regulator_set_enable_if_allowed to
continue if regulator already was enabled or disabled.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
This commit is contained in:
Svyatoslav Ryhel
2023-10-22 19:23:47 +02:00
committed by Anatolij Gustschin
parent 9a3a58396b
commit 251ff34932
1 changed files with 6 additions and 7 deletions
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drivers/video/pwm_backlight.c
+6 -7
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@@ -100,8 +100,8 @@ static int enable_sequence(struct udevice *dev, int seq)
plat = dev_get_uclass_plat(priv->reg);
log_debug("Enable '%s', regulator '%s'/'%s'\n",
dev->name, priv->reg->name, plat->name);
ret = regulator_set_enable(priv->reg, true);
if (ret) {
ret = regulator_set_enable_if_allowed(priv->reg, true);
if (ret && ret != -ENOSYS) {
log_debug("Cannot enable regulator for PWM '%s'\n",
dev->name);
return log_ret(ret);
@@ -181,11 +181,10 @@ static int pwm_backlight_set_brightness(struct udevice *dev, int percent)
}
if (disable) {
dm_gpio_set_value(&priv->enable, 0);
if (priv->reg) {
ret = regulator_set_enable(priv->reg, false);
if (ret)
return log_ret(ret);
}
ret = regulator_set_enable_if_allowed(priv->reg, false);
if (ret && ret != -ENOSYS)
return log_ret(ret);
priv->enabled = false;
}