drm/panel: simple: Update backlight state property

Some backlight drivers ignore the power property and instead only use
the state property. Fixup the panel driver to set the state property in
addition to the power property.

Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 359cd37d09cb2c2e9d02a1f8d6004bcf4af0dadf..f503d12b39309dec7c98c959bf8ed5e52bdf83a3 100644 (file)
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -168,6 +168,7 @@ static int panel_simple_disable(struct drm_panel *panel)
 
        if (p->backlight) {
                p->backlight->props.power = FB_BLANK_POWERDOWN;
+               p->backlight->props.state |= BL_CORE_FBBLANK;
                backlight_update_status(p->backlight);
        }
 
@@ -235,6 +236,7 @@ static int panel_simple_enable(struct drm_panel *panel)
                msleep(p->desc->delay.enable);
 
        if (p->backlight) {
+               p->backlight->props.state &= ~BL_CORE_FBBLANK;
                p->backlight->props.power = FB_BLANK_UNBLANK;
                backlight_update_status(p->backlight);
        }