Attachment 60102 Details for Bug 46312 – edp power sequencing fix

[patch] edp power sequencing fix

edp-power-sequencing-fix.patch (text/plain), 1.10 KB, created by Daniel Vetter on 2012-04-16 15:49:09 UTC

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Creator: Daniel Vetter

Created: 2012-04-16 15:49:09 UTC

Size: 1.10 KB

patch

obsolete

>diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
>index 38d097d..1f9c085 100644
>--- a/drivers/gpu/drm/i915/intel_dp.c
>+++ b/drivers/gpu/drm/i915/intel_dp.c
>@@ -1239,11 +1239,10 @@ static void intel_dp_prepare(struct drm_encoder *encoder)
> {
> 	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
> 
>-	ironlake_edp_backlight_off(intel_dp);
>-	ironlake_edp_panel_off(intel_dp);
>-
> 	/* Wake up the sink first */
> 	ironlake_edp_panel_vdd_on(intel_dp);
>+	ironlake_edp_backlight_off(intel_dp);
>+	ironlake_edp_panel_off(intel_dp);
> 	intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON);
> 	intel_dp_link_down(intel_dp);
> 	ironlake_edp_panel_vdd_off(intel_dp, false);
>@@ -1282,10 +1281,9 @@ intel_dp_dpms(struct drm_encoder *encoder, int mode)
> 	uint32_t dp_reg = I915_READ(intel_dp->output_reg);
> 
> 	if (mode != DRM_MODE_DPMS_ON) {
>+		ironlake_edp_panel_vdd_on(intel_dp);
> 		ironlake_edp_backlight_off(intel_dp);
> 		ironlake_edp_panel_off(intel_dp);
>-
>-		ironlake_edp_panel_vdd_on(intel_dp);
> 		intel_dp_sink_dpms(intel_dp, mode);
> 		intel_dp_link_down(intel_dp);
> 		ironlake_edp_panel_vdd_off(intel_dp, false);

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