Like we already do for the LVDS panels. This seems to help greatly
in setting up the backlight, since the BIOS might refuse to cooperate.
Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
drivers/gpu/drm/i915/intel_dp.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 265cec1..49846c0 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1128,6 +1128,8 @@ static void ironlake_edp_panel_off(struct intel_dp *intel_dp)
DRM_DEBUG_KMS("Turn eDP power off\n");
+ intel_panel_disable_backlight(dev);
+
WARN(!intel_dp->want_panel_vdd, "Need VDD to turn off panel\n");
pp = ironlake_get_pp_control(dev_priv);
@@ -1146,6 +1148,7 @@ static void ironlake_edp_backlight_on(struct intel_dp *intel_dp)
{
struct drm_device *dev = intel_dp->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
+ int pipe = to_intel_crtc(intel_dp->base.base.crtc)->pipe;
u32 pp;
if (!is_edp(intel_dp))
@@ -1163,6 +1166,8 @@ static void ironlake_edp_backlight_on(struct intel_dp *intel_dp)
pp |= EDP_BLC_ENABLE;
I915_WRITE(PCH_PP_CONTROL, pp);
POSTING_READ(PCH_PP_CONTROL);
+
+ intel_panel_enable_backlight(dev, pipe);
}
static void ironlake_edp_backlight_off(struct intel_dp *intel_dp)
--
1.7.11.4
