This is a note to let you know that I've just added the patch titled
drm/radeon/dp: Set EDP_CONFIGURATION_SET for bridge chips if necessary
to the 3.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-radeon-dp-set-edp_configuration_set-for-bridge-chips-if-necessary.patch
and it can be found in the queue-3.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 66c2b84ba6256bc5399eed45582af9ebb3ba2c15 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@xxxxxxx>
Date: Wed, 11 Feb 2015 18:34:36 -0500
Subject: drm/radeon/dp: Set EDP_CONFIGURATION_SET for bridge chips if necessary
From: Alex Deucher <alexander.deucher@xxxxxxx>
commit 66c2b84ba6256bc5399eed45582af9ebb3ba2c15 upstream.
Don't restrict it to just eDP panels. Some LVDS bridge chips require
this. Fixes 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@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/radeon/atombios_dp.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
--- 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(str
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;
Patches currently in stable-queue which might be from alexander.deucher@xxxxxxx are
queue-3.19/drm-radeon-don-t-try-to-enable-write-combining-without-pat.patch
queue-3.19/drm-radeon-dp-set-edp_configuration_set-for-bridge-chips-if-necessary.patch
queue-3.19/drm-radeon-fix-voltage-setup-on-hawaii.patch
queue-3.19/drm-radeon-only-enable-kv-kb-dpm-interrupts-once-v3.patch
queue-3.19/drm-radeon-workaround-for-cp-hw-bug-on-cik.patch
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