From 035aa3dec811315a9e3613cd9ab818e584d7c21d Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Sat, 20 Oct 2012 20:57:42 +0200 Subject: [PATCH] drm/i915: enable/disable backlight for eDP 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. Reviewed-by: Jesse Barnes Tested-by: Paulo Zanoni v2: Move the backlight_off call from panel_off to edp_backlight_off, noticed by Paulo Zanoni. Reviewed-by: Paulo Zanoni Signed-off-by: Daniel Vetter --- 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 d459cc72db64..da526c9a9cef 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1164,6 +1164,7 @@ 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)) @@ -1181,6 +1182,8 @@ 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) @@ -1192,6 +1195,8 @@ static void ironlake_edp_backlight_off(struct intel_dp *intel_dp) if (!is_edp(intel_dp)) return; + intel_panel_disable_backlight(dev); + DRM_DEBUG_KMS("\n"); pp = ironlake_get_pp_control(dev_priv); pp &= ~EDP_BLC_ENABLE;