Attachment 37049 Details for Bug 28739 – make sure panel power is enabled on eDP

[patch] make sure panel power is enabled on eDP

i915-edp-mode-set-fix.patch (text/plain), 1.17 KB, created by Jesse Barnes on 2010-07-14 12:21:44 UTC

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Creator: Jesse Barnes

Created: 2010-07-14 12:21:44 UTC

Size: 1.17 KB

patch

obsolete

>diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
>index b4f0282..2827475 100644
>--- a/drivers/gpu/drm/i915/intel_dp.c
>+++ b/drivers/gpu/drm/i915/intel_dp.c
>@@ -246,6 +246,7 @@ intel_dp_aux_ch(struct intel_encoder *intel_encoder,
> 			aux_clock_divider = 200; /* SNB eDP input clock at 400Mhz */
> 		else
> 			aux_clock_divider = 225; /* eDP input clock at 450Mhz */
>+		I915_WRITE(PCH_PP_CONTROL, I915_READ(PCH_PP_CONTROL) | (1<<3));
> 	} else if (HAS_PCH_SPLIT(dev))
> 		aux_clock_divider = 62; /* IRL input clock fixed at 125Mhz */
> 	else
>@@ -749,6 +750,9 @@ static void ironlake_edp_backlight_on (struct drm_device *dev)
> 	struct drm_i915_private *dev_priv = dev->dev_private;
> 	u32 pp;
> 
>+	I915_WRITE(PCH_PP_CONTROL, I915_READ(PCH_PP_CONTROL) | (0xabcd << 16) | POWER_TARGET_ON);
>+	udelay(1000);
>+
> 	DRM_DEBUG_KMS("\n");
> 	pp = I915_READ(PCH_PP_CONTROL);
> 	pp |= EDP_BLC_ENABLE;
>@@ -764,6 +768,9 @@ static void ironlake_edp_backlight_off (struct drm_device *dev)
> 	pp = I915_READ(PCH_PP_CONTROL);
> 	pp &= ~EDP_BLC_ENABLE;
> 	I915_WRITE(PCH_PP_CONTROL, pp);
>+
>+	I915_WRITE(PCH_PP_CONTROL, I915_READ(PCH_PP_CONTROL) & ~POWER_TARGET_ON);
>+	udelay(1000);
> }
> 
> static void

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Attachments on bug 28739: 36456 | 36457 | 36458 | 36459 | 36677 | 36678 | 36785 | 36786 | 37049 | 37323 | 37324

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