This is a note to let you know that I've just added the patch titled
drm/radeon: on hotplug force link training to happen (v2)
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-on-hotplug-force-link-training-to-happen-v2.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 ca2ccde5e2f24a792caa4cca919fc5c6f65d1887 Mon Sep 17 00:00:00 2001
From: Jerome Glisse <[email protected]>
Date: Thu, 19 Jul 2012 17:25:55 -0400
Subject: drm/radeon: on hotplug force link training to happen (v2)
From: Jerome Glisse <[email protected]>
commit ca2ccde5e2f24a792caa4cca919fc5c6f65d1887 upstream.
To have DP behave like VGA/DVI we need to retrain the link
on hotplug. For this to happen we need to force link
training to happen by setting connector dpms to off
before asking it turning it on again.
v2: agd5f
- drop the dp_get_link_status() change in atombios_dp.c
for now. We still need the dpms OFF change.
Signed-off-by: Jerome Glisse <[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_connectors.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -79,10 +79,16 @@ void radeon_connector_hotplug(struct drm
if (dig_connector->dp_sink_type ==
CONNECTOR_OBJECT_ID_DISPLAYPORT) {
int saved_dpms = connector->dpms;
/* Only turn off the display if it's physically
disconnected */
- if (!radeon_hpd_sense(rdev, radeon_connector->hpd.hpd))
+ if (!radeon_hpd_sense(rdev, radeon_connector->hpd.hpd))
{
drm_helper_connector_dpms(connector,
DRM_MODE_DPMS_OFF);
- else if (radeon_dp_needs_link_train(radeon_connector))
+ } else if
(radeon_dp_needs_link_train(radeon_connector)) {
+ /* set it to OFF so that
drm_helper_connector_dpms()
+ * won't return immediately since the current
state
+ * is ON at this point.
+ */
+ connector->dpms = DRM_MODE_DPMS_OFF;
drm_helper_connector_dpms(connector,
DRM_MODE_DPMS_ON);
+ }
connector->dpms = saved_dpms;
}
}
Patches currently in stable-queue which might be from [email protected] are
queue-3.4/drm-radeon-fix-hotplug-of-dp-to-dvi-hdmi-passive-adapters-v2.patch
queue-3.4/drm-radeon-on-hotplug-force-link-training-to-happen-v2.patch
queue-3.4/drm-radeon-fix-bo-creation-retry-path.patch
queue-3.4/drm-radeon-fix-dpms-on-off-on-trinity-aruba-v2.patch
queue-3.4/drm-radeon-fix-non-revealent-error-message.patch
queue-3.4/drm-radeon-fix-fence-related-segfault-in-cs.patch
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