3.8.13.27 -stable review patch.  If anyone has any objections, please let me 
know.

------------------

From: Alex Deucher <alexander.deuc...@amd.com>

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.deuc...@amd.com>
Signed-off-by: Kamal Mostafa <ka...@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 71619b0..f04f3c9 100644
--- a/drivers/gpu/drm/radeon/atombios_encoders.c
+++ b/drivers/gpu/drm/radeon/atombios_encoders.c
@@ -1877,8 +1877,11 @@ 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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