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drm/radeon/kms/evergreen: reset the grbm blocks at resume and init

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commit 86f5c9edbb upstream.

This fixes module reloading and resume as the gfx block seems to
be left in a bad state in some cases.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alex Deucher 2010-12-20 12:35:04 -05:00 committed by Greg Kroah-Hartman
parent 9d2510f79d
commit 8b9040e518
1 changed files with 10 additions and 0 deletions
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10
drivers/gpu/drm/radeon/evergreen.c
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@ -2097,6 +2097,11 @@ int evergreen_resume(struct radeon_device *rdev)
{
int r;
/* reset the asic, the gfx blocks are often in a bad state
* after the driver is unloaded or after a resume
*/
if (radeon_asic_reset(rdev))
dev_warn(rdev->dev, "GPU reset failed !\n");
/* Do not reset GPU before posting, on rv770 hw unlike on r500 hw,
* posting will perform necessary task to bring back GPU into good
* shape.
@ -2193,6 +2198,11 @@ int evergreen_init(struct radeon_device *rdev)
r = radeon_atombios_init(rdev);
if (r)
return r;
/* reset the asic, the gfx blocks are often in a bad state
* after the driver is unloaded or after a resume
*/
if (radeon_asic_reset(rdev))
dev_warn(rdev->dev, "GPU reset failed !\n");
/* Post card if necessary */
if (!evergreen_card_posted(rdev)) {
if (!rdev->bios) {