[3.11.y.z extended stable] Patch "drm/radeon/atom: fix dithering on certain panels" has been added to staging queue
Luis Henriques
luis.henriques at canonical.com
Thu Jun 26 10:36:05 UTC 2014
This is a note to let you know that I have just added a patch titled
drm/radeon/atom: fix dithering on certain panels
to the linux-3.11.y-queue branch of the 3.11.y.z extended stable tree
which can be found at:
http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.11.y-queue
If you, or anyone else, feels it should not be added to this tree, please
reply to this email.
For more information about the 3.11.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks.
-Luis
------
>From e68e91a9910ef708dc659c1dec0e5fd9c9868e1f Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher at amd.com>
Date: Tue, 27 May 2014 16:40:51 -0400
Subject: drm/radeon/atom: fix dithering on certain panels
commit 642528355c694f5ed68f6bff9ff520326a249f99 upstream.
We need to specify the encoder mode as LVDS for eDP
when using the Crtc_Source atom table in order to properly
set up the FMT hardware.
bug:
https://bugs.freedesktop.org/show_bug.cgi?id=73911
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
drivers/gpu/drm/radeon/atombios_encoders.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c
index f0d8cb17c63e..76e5e29ac46c 100644
--- a/drivers/gpu/drm/radeon/atombios_encoders.c
+++ b/drivers/gpu/drm/radeon/atombios_encoders.c
@@ -1894,8 +1894,11 @@ atombios_set_encoder_crtc_source(struct drm_encoder *encoder)
args.v2.ucEncodeMode = ATOM_ENCODER_MODE_CRT;
else
args.v2.ucEncodeMode = atombios_get_encoder_mode(encoder);
- } else
+ } else if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
+ args.v2.ucEncodeMode = ATOM_ENCODER_MODE_LVDS;
+ } else {
args.v2.ucEncodeMode = atombios_get_encoder_mode(encoder);
+ }
switch (radeon_encoder->encoder_id) {
case ENCODER_OBJECT_ID_INTERNAL_UNIPHY:
case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1:
--
1.9.1
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