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backlight: also change clamp percentage on ID_BACKLIGHT_CLAMP/ID_LEDS_CLAMP=yes

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Follow-up for 4ed1e2ea17.
This commit is contained in:
Yu Watanabe
2026-02-16 21:24:55 +09:00
parent ad3e4af9a7
commit 5e0c1f2e1b
1 changed files with 6 additions and 3 deletions
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src/backlight/backlight.c
+6 -3
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@@ -372,6 +372,9 @@ static int clamp_brightness(
return 0;
}
/* used as the default for devices in the backlight subsystem, or when ID_BACKLIGHT_CLAMP/ID_LEDS_CLAMP=yes. */
#define DEFAULT_CLAMP_PERCENT 1u
static int shall_clamp(sd_device *device, unsigned *ret) {
const char *property, *s;
unsigned default_percent;
@@ -385,10 +388,10 @@ static int shall_clamp(sd_device *device, unsigned *ret) {
return r;
if (r > 0) {
property = "ID_BACKLIGHT_CLAMP";
default_percent = 1;
default_percent = DEFAULT_CLAMP_PERCENT;
} else {
property = "ID_LEDS_CLAMP";
default_percent = 0;
default_percent = 0; /* The clamping is disabled by default. */
}
r = sd_device_get_property_value(device, property, &s);
@@ -401,7 +404,7 @@ static int shall_clamp(sd_device *device, unsigned *ret) {
r = parse_boolean(s);
if (r >= 0) {
*ret = r ? 5 : 0;
*ret = r ? DEFAULT_CLAMP_PERCENT : 0;
return r;
}