drm/mgag200: Add missing write to index before accessing data register
This is a bug fix for some versions of g200se cards while doing
mode-setting.
Signed-off-by: Christopher Harvey <charvey@matrox.com>
Tested-by: Julia Lemire <jlemire@matrox.com>
Acked-by: Julia Lemire <jlemire@matrox.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@gmail.com>
diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c
index 77b8a45..ee66bad 100644
--- a/drivers/gpu/drm/mgag200/mgag200_mode.c
+++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
@@ -1034,13 +1034,14 @@
else
hi_pri_lvl = 5;
- WREG8(0x1fde, 0x06);
- WREG8(0x1fdf, hi_pri_lvl);
+ WREG8(MGAREG_CRTCEXT_INDEX, 0x06);
+ WREG8(MGAREG_CRTCEXT_DATA, hi_pri_lvl);
} else {
+ WREG8(MGAREG_CRTCEXT_INDEX, 0x06);
if (mdev->reg_1e24 >= 0x01)
- WREG8(0x1fdf, 0x03);
+ WREG8(MGAREG_CRTCEXT_DATA, 0x03);
else
- WREG8(0x1fdf, 0x04);
+ WREG8(MGAREG_CRTCEXT_DATA, 0x04);
}
}
return 0;