Attachment 94966 Details for Bug 74628 – Set EDP_FORCE_VDD bit in

Set EDP_FORCE_VDD bit in

0001-drm-i915-Don-t-just-say-it-actually-force-edp-vdd.patch (text/plain), 1.42 KB, created by Patrik Jakobsson on 2014-03-02 16:16:30 UTC

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Creator: Patrik Jakobsson

Created: 2014-03-02 16:16:30 UTC

Size: 1.42 KB

patch

obsolete

>From e172cbf10381dff6e21e229996352a7ce9a9c223 Mon Sep 17 00:00:00 2001
>From: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
>Date: Sat, 1 Mar 2014 23:37:43 +0100
>Subject: [PATCH] drm/i915: Don't just say it, actually force edp vdd
>
>This solves the blank screen problem on the MacBook Air 6,2. The
>comments state that we need to force edp vdd so lets put it back. The
>EDP_FORCE_VDD bit was removed in commit:
>
>commit dff392dbd258381a6c3164f38420593f2d291e3b
>drm/i915: don't touch the VDD when disabling the panel
>    
>Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=74628
>Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
>Cc: Chris Wilson <chris@chris-wilson.co.uk>
>Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
>---
> drivers/gpu/drm/i915/intel_dp.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
>index 57552eb..44de6f7 100644
>--- a/drivers/gpu/drm/i915/intel_dp.c
>+++ b/drivers/gpu/drm/i915/intel_dp.c
>@@ -1252,7 +1252,7 @@ void ironlake_edp_panel_off(struct intel_dp *intel_dp)
> 	pp = ironlake_get_pp_control(intel_dp);
> 	/* We need to switch off panel power _and_ force vdd, for otherwise some
> 	 * panels get very unhappy and cease to work. */
>-	pp &= ~(POWER_TARGET_ON | PANEL_POWER_RESET | EDP_BLC_ENABLE);
>+	pp &= ~(POWER_TARGET_ON | EDP_FORCE_VDD | PANEL_POWER_RESET | EDP_BLC_ENABLE);
> 
> 	pp_ctrl_reg = _pp_ctrl_reg(intel_dp);
> 
>-- 
>1.8.3.2
>

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Attachments on bug 74628: 93565 | 93568 | 93769 | 94966 | 94967 | 94968 | 95007

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