diff options
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 75c433e6f45..043825c9ddc 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -5036,8 +5036,8 @@ static void intel_increase_pllclock(struct drm_crtc *crtc) drm_i915_private_t *dev_priv = dev->dev_private; struct intel_crtc *intel_crtc = to_intel_crtc(crtc); int pipe = intel_crtc->pipe; - int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B; - int dpll = I915_READ(dpll_reg); + int dpll_reg = DPLL(pipe); + int dpll; if (HAS_PCH_SPLIT(dev)) return; @@ -5045,17 +5045,19 @@ static void intel_increase_pllclock(struct drm_crtc *crtc) if (!dev_priv->lvds_downclock_avail) return; + dpll = I915_READ(dpll_reg); if (!HAS_PIPE_CXSR(dev) && (dpll & DISPLAY_RATE_SELECT_FPA1)) { DRM_DEBUG_DRIVER("upclocking LVDS\n"); /* Unlock panel regs */ - I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) | - PANEL_UNLOCK_REGS); + I915_WRITE(PP_CONTROL, + I915_READ(PP_CONTROL) | PANEL_UNLOCK_REGS); dpll &= ~DISPLAY_RATE_SELECT_FPA1; I915_WRITE(dpll_reg, dpll); - dpll = I915_READ(dpll_reg); + POSTING_READ(dpll_reg); intel_wait_for_vblank(dev, pipe); + dpll = I915_READ(dpll_reg); if (dpll & DISPLAY_RATE_SELECT_FPA1) DRM_DEBUG_DRIVER("failed to upclock LVDS!\n"); |