drm/mgag200: Debug-print unique revisions id on G200 SE

The behavior of MGA G200 SE depends on the rev id. Print the id when
debugging is enabled.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191204133435.17462-1-tzimmermann@suse.de

diff --git a/drivers/gpu/drm/mgag200/mgag200_main.c b/drivers/gpu/drm/mgag200/mgag200_main.c
index e1f900d78483ff29165604cb193df0c50328c2d4..470fa641451a30549d13faf4bcd80f35d5a69303 100644 (file)
--- a/drivers/gpu/drm/mgag200/mgag200_main.c
+++ b/drivers/gpu/drm/mgag200/mgag200_main.c
@@ -118,8 +118,11 @@ static int mgag200_device_init(struct drm_device *dev,
                return -ENOMEM;
 
        /* stash G200 SE model number for later use */
-       if (IS_G200_SE(mdev))
+       if (IS_G200_SE(mdev)) {
                mdev->unique_rev_id = RREG32(0x1e24);
+               DRM_DEBUG("G200 SE unique revision id is 0x%x\n",
+                         mdev->unique_rev_id);
+       }
 
        ret = mga_vram_init(mdev);
        if (ret)