From: antoniospg <antoniospg100@xxxxxxxxx>
Summary:
* Add support to turn on/off backlight when changing values in bl_power
file. This is achieved by using function backlight_get_brightness()
in nva3_set_intensity to get current brightness.
Test plan:
* Turn off:
echo 1 > /sys/class/backlight/nv_backlight/bl_power
* Turn on:
echo 0 > /sys/class/backlight/nv_backlight/bl_power
Signed-off-by: antoniospg <antoniospg100@xxxxxxxxx>
---
drivers/gpu/drm/nouveau/nouveau_backlight.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c b/drivers/gpu/drm/nouveau/nouveau_backlight.c
index a2141d3d9b1d..5c82f5189b79 100644
--- a/drivers/gpu/drm/nouveau/nouveau_backlight.c
+++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c
@@ -263,7 +263,11 @@ nva3_set_intensity(struct backlight_device *bd)
u32 div, val;
div = nvif_rd32(device, NV50_PDISP_SOR_PWM_DIV(or));
- val = (bd->props.brightness * div) / 100;
+
+ val = backlight_get_brightness(bd);
+ if (val)
+ val = (val * div) / 100;
+
if (div) {
nvif_wr32(device, NV50_PDISP_SOR_PWM_CTL(or),
val |
--
2.25.1
