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Commit ac10f81d authored by Alex Deucher's avatar Alex Deucher Committed by Dave Airlie
Browse files

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



Signed-off-by: default avatarAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 2ec8a5fe

drivers/gpu/drm/radeon/evergreen_blit_kms.c

+10 −0
Original line number Diff line number Diff line
@@ -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));