drm/radeon: fix doublescan modes (v2)

[ Upstream commit fd99a0943ffaa0320ea4f69d09ed188f950c0432 ]

Use the correct flags for atom.

v2: handle DRM_MODE_FLAG_DBLCLK

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index 9f0e62529c46f4554c935e06173e56741206a824..ce8cab52285b067df9d4bee963f108f9e37081b7 100644 (file)
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -330,8 +330,10 @@ atombios_set_crtc_dtd_timing(struct drm_crtc *crtc,
                misc |= ATOM_COMPOSITESYNC;
        if (mode->flags & DRM_MODE_FLAG_INTERLACE)
                misc |= ATOM_INTERLACE;
-       if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
+       if (mode->flags & DRM_MODE_FLAG_DBLCLK)
                misc |= ATOM_DOUBLE_CLOCK_MODE;
+       if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
+               misc |= ATOM_H_REPLICATIONBY2 | ATOM_V_REPLICATIONBY2;
 
        args.susModeMiscInfo.usAccess = cpu_to_le16(misc);
        args.ucCRTC = radeon_crtc->crtc_id;
@@ -374,8 +376,10 @@ static void atombios_crtc_set_timing(struct drm_crtc *crtc,
                misc |= ATOM_COMPOSITESYNC;
        if (mode->flags & DRM_MODE_FLAG_INTERLACE)
                misc |= ATOM_INTERLACE;
-       if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
+       if (mode->flags & DRM_MODE_FLAG_DBLCLK)
                misc |= ATOM_DOUBLE_CLOCK_MODE;
+       if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
+               misc |= ATOM_H_REPLICATIONBY2 | ATOM_V_REPLICATIONBY2;
 
        args.susModeMiscInfo.usAccess = cpu_to_le16(misc);
        args.ucCRTC = radeon_crtc->crtc_id;