This is a note to let you know that I've just added the patch titled
drm/radeon/kms/atom: fix duallink on some early DCE3.2 cards
to the 2.6.39-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-kms-atom-fix-duallink-on-some-early-dce3.2-cards.patch
and it can be found in the queue-2.6.39 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 8323fa6ba313ae2664420ec34d56a7fb0bbbe525 Mon Sep 17 00:00:00 2001
From: Alex Deucher <[email protected]>
Date: Fri, 17 Jun 2011 13:13:52 -0400
Subject: drm/radeon/kms/atom: fix duallink on some early DCE3.2 cards
From: Alex Deucher <[email protected]>
commit 8323fa6ba313ae2664420ec34d56a7fb0bbbe525 upstream.
Certain revisions of the vbios on DCE3.2 cards have a bug
in the transmitter control table which prevents duallink from
being enabled properly on some cards. The action switch statement
jumps to the wrong offset for the OUTPUT_ENABLE action. The fix
is to use the ENABLE action rather than the OUTPUT_ENABLE action
on the affected cards. In fixed version of the vbios, both
actions jump to the same offset, so the change should be safe.
Reported-and-tested-by: Dave Airlie <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/gpu/drm/radeon/radeon_encoders.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/radeon/radeon_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_encoders.c
@@ -1294,7 +1294,11 @@ radeon_atom_encoder_dpms(struct drm_enco
if (is_dig) {
switch (mode) {
case DRM_MODE_DPMS_ON:
- atombios_dig_transmitter_setup(encoder,
ATOM_TRANSMITTER_ACTION_ENABLE_OUTPUT, 0, 0);
+ /* some early dce3.2 boards have a bug in their
transmitter control table */
+ if ((rdev->family == CHIP_RV710) || (rdev->family ==
CHIP_RV730))
+ atombios_dig_transmitter_setup(encoder,
ATOM_TRANSMITTER_ACTION_ENABLE, 0, 0);
+ else
+ atombios_dig_transmitter_setup(encoder,
ATOM_TRANSMITTER_ACTION_ENABLE_OUTPUT, 0, 0);
if (atombios_get_encoder_mode(encoder) ==
ATOM_ENCODER_MODE_DP) {
struct drm_connector *connector =
radeon_get_connector_for_encoder(encoder);
Patches currently in stable-queue which might be from [email protected] are
queue-2.6.39/drm-radeon-kms-fix-chremap-setup-on-rv770-ce.patch
queue-2.6.39/drm-radeon-kms-atom-fix-duallink-on-some-early-dce3.2-cards.patch
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