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drm/radeon/kms/blit: workaround some hw issues on evergreen+ 

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2011-05-25 01:00:45 -04:00 committed by Dave Airlie
parent 2ec8a5feaf
commit ac10f81d94
1 changed files with 10 additions and 0 deletions
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10
drivers/gpu/drm/radeon/evergreen_blit_kms.c
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@ -199,6 +199,16 @@ static void
set_scissors(struct radeon_device *rdev, int x1, int y1,
int x2, int y2)
{
/* workaround some hw bugs */
if (x2 == 0)
x1 = 1;
if (y2 == 0)
y1 = 1;
if (rdev->family == CHIP_CAYMAN) {
if ((x2 == 1) && (y2 == 1))
x2 = 2;
}
radeon_ring_write(rdev, PACKET3(PACKET3_SET_CONTEXT_REG, 2));
radeon_ring_write(rdev, (PA_SC_SCREEN_SCISSOR_TL - PACKET3_SET_CONTEXT_REG_START) >> 2);
radeon_ring_write(rdev, (x1 << 0) | (y1 << 16));