Messages in this thread Patch in this message | | | From | antoniospg <> | Subject | [PATCH] drm/nouveau: Adding support to control backlight using bl_power for nva3. | Date | Sat, 29 Oct 2022 15:42:55 -0300 |
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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@gmail.com> --- drivers/gpu/drm/nouveau/nouveau_backlight.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c b/drivers/gpu/drm/nouveau/nouveau_backlight.c index a2141d3d9b1d..855d0ce9f7fa 100644 --- a/drivers/gpu/drm/nouveau/nouveau_backlight.c +++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c @@ -263,7 +263,16 @@ 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; + + switch (bd->props.power) { + case FB_BLANK_UNBLANK: + val = (bd->props.brightness * div) / 100; + break; + default: + val = 0; + break; + } + if (div) { nvif_wr32(device, NV50_PDISP_SOR_PWM_CTL(or), val | -- 2.25.1
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