Skip to content

regulator: edatec-panel-regulator: Fix backlight power state restoration #7457

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
FrankLeeEDA wants to merge 1 commit into
base: rpi-6.18.y
Choose a base branch
from
+5 −1
Open

regulator: edatec-panel-regulator: Fix backlight power state restoration #7457

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
6 changes: 5 additions & 1 deletion drivers/regulator/edatec-panel-regulator.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,7 @@ enum gpio_signals {

struct ed_regulator {
struct regmap *regmap;
int bl_power_last;
};

static bool ed_readable_reg(struct device *dev, unsigned int reg)
Expand All @@ -64,11 +65,13 @@ static int ed_update_status(struct backlight_device *bl)
int bl_power = props->power;
int ret;

if (bl_power == 1 || bl_power == 4)
if (bl_power != regulator->bl_power_last)
ret = regmap_write(regmap, REG_PWR, bl_power);
else
ret = regmap_write(regmap, REG_PWM, brightness);

regulator->bl_power_last = bl_power;

return ret;
}

Expand Down Expand Up @@ -146,6 +149,7 @@ static int ed_i2c_probe(struct i2c_client *i2c)
props.max_brightness = 0xff;
props.brightness = 0xff;

regulator->bl_power_last = 0;
regulator->regmap = regmap;
bl = devm_backlight_device_register(&i2c->dev, dev_name(&i2c->dev),
&i2c->dev, regulator, &ed_bl, &props);
Expand Down
Loading