drm/nve0/disp: nvidia randomly decided to move the dithering method

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/drivers/gpu/drm/nouveau/nvd0_display.c b/drivers/gpu/drm/nouveau/nvd0_display.c
index 421d301b3797..d69642da8b56 100644
--- a/drivers/gpu/drm/nouveau/nvd0_display.c
+++ b/drivers/gpu/drm/nouveau/nvd0_display.c
@@ -363,10 +363,12 @@ nvd0_display_flip_next(struct drm_crtc *crtc, struct drm_framebuffer *fb,
 static int
 nvd0_crtc_set_dither(struct nouveau_crtc *nv_crtc, bool update)
 {
+        struct drm_nouveau_private *dev_priv = nv_crtc->base.dev->dev_private;
         struct drm_device *dev = nv_crtc->base.dev;
         struct nouveau_connector *nv_connector;
         struct drm_connector *connector;
         u32 *push, mode = 0x00;
+        u32 mthd;
 
         nv_connector = nouveau_crtc_connector_get(nv_crtc);
         connector = &nv_connector->base;
@@ -384,9 +386,14 @@ nvd0_crtc_set_dither(struct nouveau_crtc *nv_crtc, bool update)
                 mode |= nv_connector->dithering_depth;
         }
 
+        if (dev_priv->card_type < NV_E0)
+                mthd = 0x0490 + (nv_crtc->index * 0x0300);
+        else
+                mthd = 0x04a0 + (nv_crtc->index * 0x0300);
+
         push = evo_wait(dev, EVO_MASTER, 4);
         if (push) {
-                evo_mthd(push, 0x0490 + (nv_crtc->index * 0x300), 1);
+                evo_mthd(push, mthd, 1);
                 evo_data(push, mode);
                 if (update) {
                         evo_mthd(push, 0x0080, 1);