From: "Michel Dänzer" <michel@daenzer.net>
To: dri-devel@lists.freedesktop.org
Subject: [PATCH 2/2] drm/radeon: Fix max_vblank_count value for current display engines
Date: Tue, 26 May 2015 17:53:39 +0900 [thread overview]
Message-ID: <1432630419-23490-2-git-send-email-michel@daenzer.net> (raw)
In-Reply-To: <1432630419-23490-1-git-send-email-michel@daenzer.net>
From: Michel Dänzer <michel.daenzer@amd.com>
The value was much too low, which could cause the userspace visible
vblank counter to move backwards when the hardware counter wrapped
around.
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
---
drivers/gpu/drm/radeon/radeon_irq_kms.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c
index 7162c93..d5c392b 100644
--- a/drivers/gpu/drm/radeon/radeon_irq_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c
@@ -143,7 +143,13 @@ void radeon_driver_irq_preinstall_kms(struct drm_device *dev)
*/
int radeon_driver_irq_postinstall_kms(struct drm_device *dev)
{
- dev->max_vblank_count = 0x001fffff;
+ struct radeon_device *rdev = dev->dev_private;
+
+ if (ASIC_IS_AVIVO(rdev))
+ dev->max_vblank_count = 0x00ffffff;
+ else
+ dev->max_vblank_count = 0x001fffff;
+
return 0;
}
--
2.1.4
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next prev parent reply other threads:[~2015-05-26 8:53 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-26 8:53 [PATCH 1/2] drm: Fix off-by-one in vblank hardware counter wraparound handling Michel Dänzer
2015-05-26 8:53 ` Michel Dänzer [this message]
2015-05-28 4:17 ` [PATCH 2/2] drm/radeon: Fix max_vblank_count value for current display engines Alex Deucher
2015-05-26 8:57 ` [PATCH 1/2] drm: Fix off-by-one in vblank hardware counter wraparound handling Christian König
2015-05-26 11:48 ` Daniel Vetter
2015-05-27 7:17 ` Michel Dänzer
2015-05-27 11:03 ` Daniel Vetter
2015-05-27 7:42 ` Ville Syrjälä
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