drm/radeon: fix doublescan modes (v2)

commit fd99a0943ffaa0320ea4f69d09ed188f950c0432 upstream.

Use the correct flags for atom.

v2: handle DRM_MODE_FLAG_DBLCLK

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index 86807ee..9bd5611 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;