This is a note to let you know that I've just added the patch titled
drm/i915: Disable self-refresh for untiled fbs on i915gm
to the 3.14-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-i915-disable-self-refresh-for-untiled-fbs-on-i915gm.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From [email protected] Tue Jun 3 23:12:52 2014
From: Daniel Vetter <[email protected]>
Date: Wed, 21 May 2014 11:07:22 +0200
Subject: drm/i915: Disable self-refresh for untiled fbs on i915gm
To: [email protected]
Cc: Intel Graphics Development <[email protected]>, Daniel Vetter
<[email protected]>, Ville Syrjälä <[email protected]>, Chris
Wilson <[email protected]>, Krzysztof Mazur <[email protected]>,
Jani Nikula <[email protected]>
Message-ID: <[email protected]>
From: Daniel Vetter <[email protected]>
This is commit 2ab1bc9df01dbc19b55b2271100db7 upstream.
Apparently it doesn't work. X-tiled self-refresh works flawlessly
otoh. Apparently X still works correctly with linear framebuffers, so
might just be an issue with the initial modeset. It's unclear whether
this just borked wm setup from our side or a hw restriction, but just
disabling gets things going.
Note that this regression was only brought to light with
commit 3f2dc5ac05714711fc14f2bf0ee5e42d5c08c581
Author: Ville Syrjälä <[email protected]>
Date: Fri Jan 10 14:06:47 2014 +0200
drm/i915: Fix 915GM self-refresh enable/disable
before that self-refresh for i915GM didn't work at all.
Kudos to Ville for spotting a little bug in the original patch I've
attached to the bug.
Cc: Ville Syrjälä <[email protected]>
Cc: Chris Wilson <[email protected]>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=76103
Tested-by: Krzysztof Mazur <[email protected]>
Cc: Krzysztof Mazur <[email protected]>
Reviewed-by: Ville Syrjälä <[email protected]>
Signed-off-by: Daniel Vetter <[email protected]>
[Jani: rebase on top of drm-next with primary plane support.]
Signed-off-by: Jani Nikula <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/gpu/drm/i915/intel_pm.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -1539,6 +1539,16 @@ static void i9xx_update_wm(struct drm_cr
DRM_DEBUG_KMS("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm);
+ if (IS_I915GM(dev) && enabled) {
+ struct intel_framebuffer *fb;
+
+ fb = to_intel_framebuffer(enabled->fb);
+
+ /* self-refresh seems busted with untiled */
+ if (fb->obj->tiling_mode == I915_TILING_NONE)
+ enabled = NULL;
+ }
+
/*
* Overlay gets an aggressive default since video jitter is bad.
*/
Patches currently in stable-queue which might be from [email protected] are
queue-3.14/drm-i915-don-t-warn-nor-handle-unexpected-hpd-interrupts-on-gmch-platforms.patch
queue-3.14/drm-i915-fix-unsafe-loop-iteration-over-vma-whilst-unbinding-them.patch
queue-3.14/drm-i915-disable-self-refresh-for-untiled-fbs-on-i915gm.patch
queue-3.14/drm-i915-don-t-check-gmch-state-on-inherited-configs.patch
queue-3.14/drm-i915-break-encoder-crtc-link-separately-in-intel_sanitize_crtc.patch
queue-3.14/drm-i915-quirk-invert-brightness-for-acer-aspire-5336.patch
queue-3.14/drm-i915-move-power-domain-init-earlier-during-system-resume.patch
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