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Commit 09461459 authored by Ben Skeggs's avatar Ben Skeggs
Browse files

drm/nv50/backlight: express brightness level in percent 



Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent 10b461e4

drivers/gpu/drm/nouveau/nouveau_backlight.c

+7 −3
Original line number Diff line number Diff line
@@ -100,8 +100,11 @@ nv50_get_intensity(struct backlight_device *bd) 
	struct nouveau_encoder *nv_encoder = bl_get_data(bd);

	struct drm_device *dev = nv_encoder->base.base.dev;

	int or = nv_encoder->or;

	u32 div = 1025;

	u32 val;



	return nv_rd32(dev, NV50_PDISPLAY_SOR_BACKLIGHT + (or * 0x800));

	val = nv_rd32(dev, NV50_PDISPLAY_SOR_BACKLIGHT + (or * 0x800));

	return ((val * 100) + (div / 2)) / div;

}



static int
@@ -109,8 +112,9 @@ nv50_set_intensity(struct backlight_device *bd) 
{

	struct nouveau_encoder *nv_encoder = bl_get_data(bd);

	struct drm_device *dev = nv_encoder->base.base.dev;

	int val = bd->props.brightness;

	int or = nv_encoder->or;

	u32 div = 1025;

	u32 val = (bd->props.brightness * div) / 100;



	nv_wr32(dev, NV50_PDISPLAY_SOR_BACKLIGHT + (or * 0x800),

		val | NV50_PDISPLAY_SOR_BACKLIGHT_ENABLE);
@@ -147,7 +151,7 @@ nv50_backlight_init(struct drm_connector *connector) 


	memset(&props, 0, sizeof(struct backlight_properties));

	props.type = BACKLIGHT_RAW;

	props.max_brightness = 1025;

	props.max_brightness = 100;

	bd = backlight_device_register("nv_backlight", &connector->kdev,

				       nv_encoder, &nv50_bl_ops, &props);

	if (IS_ERR(bd))