1 files changed, 50 insertions, 7 deletions

diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index dd9fdf560611..0c676696a0dd 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -353,12 +353,55 @@ static void atombios_crtc_set_timing(struct drm_crtc *crtc,
         atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
 }
 
+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;
+                }
+        }
+}
+
+
 union atom_enable_ss {
         ENABLE_LVDS_SS_PARAMETERS legacy;
         ENABLE_SPREAD_SPECTRUM_ON_PPLL_PS_ALLOCATION v1;
 };
 
-static void atombios_set_ss(struct drm_crtc *crtc, int enable)
+static void atombios_enable_ss(struct drm_crtc *crtc)
 {
         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
         struct drm_device *dev = crtc->dev;
@@ -387,9 +430,9 @@ static void atombios_set_ss(struct drm_crtc *crtc, int enable)
                                         step = dig->ss->step;
                                         delay = dig->ss->delay;
                                         range = dig->ss->range;
-                                } else if (enable)
+                                } else
                                         return;
-                        } else if (enable)
+                        } else
                                 return;
                         break;
                 }
@@ -406,13 +449,13 @@ static void atombios_set_ss(struct drm_crtc *crtc, int enable)
                 args.v1.ucSpreadSpectrumDelay = delay;
                 args.v1.ucSpreadSpectrumRange = range;
                 args.v1.ucPpll = radeon_crtc->crtc_id ? ATOM_PPLL2 : ATOM_PPLL1;
-                args.v1.ucEnable = enable;
+                args.v1.ucEnable = ATOM_ENABLE;
         } else {
                 args.legacy.usSpreadSpectrumPercentage = cpu_to_le16(percentage);
                 args.legacy.ucSpreadSpectrumType = type;
                 args.legacy.ucSpreadSpectrumStepSize_Delay = (step & 3) << 2;
                 args.legacy.ucSpreadSpectrumStepSize_Delay |= (delay & 7) << 4;
-                args.legacy.ucEnable = enable;
+                args.legacy.ucEnable = ATOM_ENABLE;
         }
         atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
 }
@@ -1086,12 +1129,12 @@ int atombios_crtc_mode_set(struct drm_crtc *crtc,
         /* pick pll */
         radeon_crtc->pll_id = radeon_atom_pick_pll(crtc);
 
-        atombios_set_ss(crtc, 0);
+        atombios_disable_ss(crtc);
         /* always set DCPLL */
         if (ASIC_IS_DCE4(rdev))
                 atombios_crtc_set_dcpll(crtc);
         atombios_crtc_set_pll(crtc, adjusted_mode);
-        atombios_set_ss(crtc, 1);
+        atombios_enable_ss(crtc);
 
         if (ASIC_IS_DCE4(rdev))
                 atombios_set_crtc_dtd_timing(crtc, adjusted_mode);