Commit 77ae5f4b authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/radeon: fix interlaced modes on DCE8 



Need to double the viewport height.

Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent a28b2a47

drivers/gpu/drm/radeon/atombios_crtc.c

+3 −0
Original line number Diff line number Diff line
@@ -1405,6 +1405,9 @@ static int dce4_crtc_do_set_base(struct drm_crtc *crtc, 
	       (x << 16) | y);

	viewport_w = crtc->mode.hdisplay;

	viewport_h = (crtc->mode.vdisplay + 1) & ~1;

	if ((rdev->family >= CHIP_BONAIRE) &&

	    (crtc->mode.flags & DRM_MODE_FLAG_INTERLACE))

		viewport_h *= 2;

	WREG32(EVERGREEN_VIEWPORT_SIZE + radeon_crtc->crtc_offset,

	       (viewport_w << 16) | viewport_h);