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drm/nouveau: Add support to control backlight using bl_power for nva3.
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: Antonio Gomes <antoniospg100@gmail.com> Signed-off-by: Karol Herbst <kherbst@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221104220424.41164-1-antoniospg100@gmail.com
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1 changed files with 5 additions and 1 deletions
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@ -264,7 +264,11 @@ nva3_set_intensity(struct backlight_device *bd)
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u32 div, val;
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div = nvif_rd32(device, NV50_PDISP_SOR_PWM_DIV(or));
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val = (bd->props.brightness * div) / 100;
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val = backlight_get_brightness(bd);
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if (val)
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val = (val * div) / 100;
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if (div) {
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nvif_wr32(device, NV50_PDISP_SOR_PWM_CTL(or),
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val |
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