Attachment 113380 Details for Bug 42960 – possible fix

[patch] possible fix

0001-drm-radeon-dp-Set-EDP_CONFIGURATION_SET-for-bridge-c.patch (text/plain), 1.33 KB, created by Alex Deucher on 2015-02-11 23:40:19 UTC

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Creator: Alex Deucher

Created: 2015-02-11 23:40:19 UTC

Size: 1.33 KB

patch

obsolete

>From 37448d83f0618a92772bafb7e8812f86eb2ee9cd Mon Sep 17 00:00:00 2001
>From: Alex Deucher <alexander.deucher@amd.com>
>Date: Wed, 11 Feb 2015 18:34:36 -0500
>Subject: [PATCH] drm/radeon/dp: Set EDP_CONFIGURATION_SET for bridge chips if
> necessary
>
>Don't restrict it to just eDP panels.  Some LVDS bridge chips require
>this.  May fix blank panels on resume on certain laptops.  Noticed
>by mrnuke on IRC.
>
>bug:
>https://bugs.freedesktop.org/show_bug.cgi?id=42960
>
>Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
>Cc: stable@vger.kernel.org
>---
> drivers/gpu/drm/radeon/atombios_dp.c | 4 +---
> 1 file changed, 1 insertion(+), 3 deletions(-)
>
>diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c
>index db42a67..5bf825d 100644
>--- a/drivers/gpu/drm/radeon/atombios_dp.c
>+++ b/drivers/gpu/drm/radeon/atombios_dp.c
>@@ -623,10 +623,8 @@ static int radeon_dp_link_train_init(struct radeon_dp_link_train_info *dp_info)
> 		drm_dp_dpcd_writeb(dp_info->aux,
> 				   DP_DOWNSPREAD_CTRL, 0);
> 
>-	if ((dp_info->connector->connector_type == DRM_MODE_CONNECTOR_eDP) &&
>-	    (dig->panel_mode == DP_PANEL_MODE_INTERNAL_DP2_MODE)) {
>+	if (dig->panel_mode == DP_PANEL_MODE_INTERNAL_DP2_MODE)
> 		drm_dp_dpcd_writeb(dp_info->aux, DP_EDP_CONFIGURATION_SET, 1);
>-	}
> 
> 	/* set the lane count on the sink */
> 	tmp = dp_info->dp_lane_count;
>-- 
>1.8.3.1
>

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Attachments on bug 42960: 53615 | 53616 | 55471 | 96754 | 97562 | 110977 | 113380

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