This is a note to let you know that I've just added the patch titled
drm/radeon/dce6: fix display powergating
to the 3.4-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-dce6-fix-display-powergating.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 0e3d50bfcbd338254795a700dcff429a96cba1a6 Mon Sep 17 00:00:00 2001
From: Alex Deucher <[email protected]>
Date: Tue, 5 Feb 2013 11:47:09 -0500
Subject: drm/radeon/dce6: fix display powergating
From: Alex Deucher <[email protected]>
commit 0e3d50bfcbd338254795a700dcff429a96cba1a6 upstream.
Only enable it when we disable the display rather than
at DPMS time since enabling it requires a full modeset
to restore the display state. Fixes blank screens in
certain cases.
Signed-off-by: Alex Deucher <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/gpu/drm/radeon/atombios_crtc.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -258,8 +258,6 @@ void atombios_crtc_dpms(struct drm_crtc
radeon_crtc->enabled = true;
/* adjust pm to dpms changes BEFORE enabling crtcs */
radeon_pm_compute_clocks(rdev);
- if (ASIC_IS_DCE6(rdev) && !radeon_crtc->in_mode_set)
- atombios_powergate_crtc(crtc, ATOM_DISABLE);
atombios_enable_crtc(crtc, ATOM_ENABLE);
if (ASIC_IS_DCE3(rdev) && !ASIC_IS_DCE6(rdev))
atombios_enable_crtc_memreq(crtc, ATOM_ENABLE);
@@ -277,8 +275,6 @@ void atombios_crtc_dpms(struct drm_crtc
atombios_enable_crtc_memreq(crtc, ATOM_DISABLE);
atombios_enable_crtc(crtc, ATOM_DISABLE);
radeon_crtc->enabled = false;
- if (ASIC_IS_DCE6(rdev) && !radeon_crtc->in_mode_set)
- atombios_powergate_crtc(crtc, ATOM_ENABLE);
/* adjust pm to dpms changes AFTER disabling crtcs */
radeon_pm_compute_clocks(rdev);
break;
@@ -1670,6 +1666,8 @@ static void atombios_crtc_disable(struct
int i;
atombios_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
+ if (ASIC_IS_DCE6(rdev))
+ atombios_powergate_crtc(crtc, ATOM_ENABLE);
for (i = 0; i < rdev->num_crtc; i++) {
if (rdev->mode_info.crtcs[i] &&
Patches currently in stable-queue which might be from [email protected]
are
queue-3.4/drm-radeon-dce6-fix-display-powergating.patch
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