Messages in this thread Patch in this message | | | From | Antonio Gomes <> | Subject | [PATCH v3] drm/nouveau: Add support to control backlight using bl_power for nva3. | Date | Fri, 4 Nov 2022 19:04:23 -0300 |
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From: antoniospg <antoniospg100@gmail.com>
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@gmail.com> --- 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
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