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Commit 570f8c77 authored by Alex Deucher's avatar Alex Deucher Committed by Sasha Levin
Browse files

drm/radeon: fix interlaced modes on DCE8 



[ Upstream commit 77ae5f4b48a0445426c9c1ef7c0f28b717e35d55 ]

Need to double the viewport height.

Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarSasha Levin <sasha.levin@oracle.com>
parent 2b4cdd25

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);