drm/nouveau: improve dithering properties, and implement proper auto mode

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

1 files changed, 26 insertions, 1 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.h b/drivers/gpu/drm/nouveau/nouveau_connector.h
index 5bcaabbd375c..6468f5e67ccf 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.h
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.h
@@ -30,12 +30,37 @@
 #include "drm_edid.h"
 #include "nouveau_i2c.h"
 
+enum nouveau_underscan_type {
+        UNDERSCAN_OFF,
+        UNDERSCAN_ON,
+        UNDERSCAN_AUTO,
+};
+
+/* the enum values specifically defined here match nv50/nvd0 hw values, and
+ * the code relies on this
+ */
+enum nouveau_dithering_mode {
+        DITHERING_MODE_OFF = 0x00,
+        DITHERING_MODE_ON = 0x01,
+        DITHERING_MODE_DYNAMIC2X2 = 0x10 | DITHERING_MODE_ON,
+        DITHERING_MODE_STATIC2X2 = 0x18 | DITHERING_MODE_ON,
+        DITHERING_MODE_TEMPORAL = 0x20 | DITHERING_MODE_ON,
+        DITHERING_MODE_AUTO
+};
+
+enum nouveau_dithering_depth {
+        DITHERING_DEPTH_6BPC = 0x00,
+        DITHERING_DEPTH_8BPC = 0x02,
+        DITHERING_DEPTH_AUTO
+};
+
 struct nouveau_connector {
         struct drm_connector base;
 
         struct dcb_connector_table_entry *dcb;
 
-        bool use_dithering;
+        int dithering_mode;
+        int dithering_depth;
         int scaling_mode;
         enum nouveau_underscan_type underscan;
         u32 underscan_hborder;