Merge tag 'drm-intel-fixes-2013-11-07' of git://people.freedesktop.org/~danvet/drm...

[~andy/linux] / drivers / gpu / drm / radeon / r600.c

diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index f9be22062df1eb8048384cabec6219e8a5238fff..4e609e8a8d2b2ab590df0d858c427d559904d028 100644 (file)
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -124,6 +124,59 @@ int r600_set_uvd_clocks(struct radeon_device *rdev, u32 vclk, u32 dclk)
        return 0;
 }
 
+void dce3_program_fmt(struct drm_encoder *encoder)
+{
+       struct drm_device *dev = encoder->dev;
+       struct radeon_device *rdev = dev->dev_private;
+       struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+       struct radeon_crtc *radeon_crtc = to_radeon_crtc(encoder->crtc);
+       struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
+       int bpc = 0;
+       u32 tmp = 0;
+       enum radeon_connector_dither dither = RADEON_FMT_DITHER_DISABLE;
+
+       if (connector) {
+               struct radeon_connector *radeon_connector = to_radeon_connector(connector);
+               bpc = radeon_get_monitor_bpc(connector);
+               dither = radeon_connector->dither;
+       }
+
+       /* LVDS FMT is set up by atom */
+       if (radeon_encoder->devices & ATOM_DEVICE_LCD_SUPPORT)
+               return;
+
+       /* not needed for analog */
+       if ((radeon_encoder->encoder_id == ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DAC1) ||
+           (radeon_encoder->encoder_id == ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DAC2))
+               return;
+
+       if (bpc == 0)
+               return;
+
+       switch (bpc) {
+       case 6:
+               if (dither == RADEON_FMT_DITHER_ENABLE)
+                       /* XXX sort out optimal dither settings */
+                       tmp |= FMT_SPATIAL_DITHER_EN;
+               else
+                       tmp |= FMT_TRUNCATE_EN;
+               break;
+       case 8:
+               if (dither == RADEON_FMT_DITHER_ENABLE)
+                       /* XXX sort out optimal dither settings */
+                       tmp |= (FMT_SPATIAL_DITHER_EN | FMT_SPATIAL_DITHER_DEPTH);
+               else
+                       tmp |= (FMT_TRUNCATE_EN | FMT_TRUNCATE_DEPTH);
+               break;
+       case 10:
+       default:
+               /* not needed */
+               break;
+       }
+
+       WREG32(FMT_BIT_DEPTH_CONTROL + radeon_crtc->crtc_offset, tmp);
+}
+
 /* get temperature in millidegrees */
 int rv6xx_get_temp(struct radeon_device *rdev)
 {