+static void atombios_disable_ss(struct drm_crtc *crtc)
+{
+ struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
+ struct drm_device *dev = crtc->dev;
+ struct radeon_device *rdev = dev->dev_private;
+ u32 ss_cntl;
+
+ if (ASIC_IS_DCE4(rdev)) {
+ switch (radeon_crtc->pll_id) {
+ case ATOM_PPLL1:
+ ss_cntl = RREG32(EVERGREEN_P1PLL_SS_CNTL);
+ ss_cntl &= ~EVERGREEN_PxPLL_SS_EN;
+ WREG32(EVERGREEN_P1PLL_SS_CNTL, ss_cntl);
+ break;
+ case ATOM_PPLL2:
+ ss_cntl = RREG32(EVERGREEN_P2PLL_SS_CNTL);
+ ss_cntl &= ~EVERGREEN_PxPLL_SS_EN;
+ WREG32(EVERGREEN_P2PLL_SS_CNTL, ss_cntl);
+ break;
+ case ATOM_DCPLL:
+ case ATOM_PPLL_INVALID:
+ return;
+ }
+ } else if (ASIC_IS_AVIVO(rdev)) {
+ switch (radeon_crtc->pll_id) {
+ case ATOM_PPLL1:
+ ss_cntl = RREG32(AVIVO_P1PLL_INT_SS_CNTL);
+ ss_cntl &= ~1;
+ WREG32(AVIVO_P1PLL_INT_SS_CNTL, ss_cntl);
+ break;
+ case ATOM_PPLL2:
+ ss_cntl = RREG32(AVIVO_P2PLL_INT_SS_CNTL);
+ ss_cntl &= ~1;
+ WREG32(AVIVO_P2PLL_INT_SS_CNTL, ss_cntl);
+ break;
+ case ATOM_DCPLL:
+ case ATOM_PPLL_INVALID:
+ return;
+ }
+ }
+}
+
+