From: Mathieu Larouche <mathieu.larou...@matrox.com>

[ Upstream commit 0cbb738108927916a659b5b0b96e386fcd7cc6e1 ]

  - Changed the HiPri value for G200e4 to always be 0.
  - Added Bandwith limitation to block resolution above 1920x1200x60Hz

Signed-off-by: Mathieu Larouche <mathieu.larou...@matrox.com>
Acked-by: Dave Airlie <airl...@redhat.com>
[seanpaul removed some trailing whitespace from the patch]
Signed-off-by: Sean Paul <seanp...@chromium.org>
Link: 
http://patchwork.freedesktop.org/patch/msgid/ec0f8568d7ec41904dfe593c5deccf3f062d7bd8.1497450944.git.mathieu.larou...@matrox.com
Signed-off-by: Sasha Levin <alexander.le...@microsoft.com>
---
 drivers/gpu/drm/mgag200/mgag200_mode.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c 
b/drivers/gpu/drm/mgag200/mgag200_mode.c
index 6b21cb27e1cc..e27ae5437089 100644
--- a/drivers/gpu/drm/mgag200/mgag200_mode.c
+++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
@@ -1133,7 +1133,10 @@ static int mga_crtc_mode_set(struct drm_crtc *crtc,
 
 
        if (IS_G200_SE(mdev)) {
-               if (mdev->unique_rev_id >= 0x02) {
+               if  (mdev->unique_rev_id >= 0x04) {
+                       WREG8(MGAREG_CRTCEXT_INDEX, 0x06);
+                       WREG8(MGAREG_CRTCEXT_DATA, 0);
+               } else if (mdev->unique_rev_id >= 0x02) {
                        u8 hi_pri_lvl;
                        u32 bpp;
                        u32 mb;
@@ -1598,6 +1601,10 @@ static int mga_vga_mode_valid(struct drm_connector 
*connector,
                        if (mga_vga_calculate_mode_bandwidth(mode, bpp)
                                > (30100 * 1024))
                                return MODE_BANDWIDTH;
+               } else {
+                       if (mga_vga_calculate_mode_bandwidth(mode, bpp)
+                               > (55000 * 1024))
+                               return MODE_BANDWIDTH;
                }
        } else if (mdev->type == G200_WB) {
                if (mode->hdisplay > 1280)
-- 
2.15.1

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