diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_display.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index f99993577168..4c9684c54f18 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -5119,6 +5119,8 @@ static void ironlake_update_pch_refclk(struct drm_device *dev) bool has_cpu_edp = false; bool has_pch_edp = false; bool has_panel = false; + bool has_ck505 = false; + bool can_ssc = false; /* We need to take the global config into account */ list_for_each_entry(encoder, &mode_config->encoder_list, @@ -5137,8 +5139,18 @@ static void ironlake_update_pch_refclk(struct drm_device *dev) break; } } - DRM_DEBUG_KMS("has_panel %d has_lvds %d has_pch_edp %d has_cpu_edp %d\n", - has_panel, has_lvds, has_pch_edp, has_cpu_edp); + + if (HAS_PCH_IBX(dev)) { + has_ck505 = dev_priv->display_clock_mode; + can_ssc = has_ck505; + } else { + has_ck505 = false; + can_ssc = true; + } + + DRM_DEBUG_KMS("has_panel %d has_lvds %d has_pch_edp %d has_cpu_edp %d has_ck505 %d\n", + has_panel, has_lvds, has_pch_edp, has_cpu_edp, + has_ck505); /* Ironlake: try to setup display ref clock before DPLL * enabling. This is only under driver's control after @@ -5148,14 +5160,18 @@ static void ironlake_update_pch_refclk(struct drm_device *dev) temp = I915_READ(PCH_DREF_CONTROL); /* Always enable nonspread source */ temp &= ~DREF_NONSPREAD_SOURCE_MASK; - temp |= DREF_NONSPREAD_SOURCE_ENABLE; + + if (has_ck505) + temp |= DREF_NONSPREAD_CK505_ENABLE; + else + temp |= DREF_NONSPREAD_SOURCE_ENABLE; if (has_panel) { temp &= ~DREF_SSC_SOURCE_MASK; temp |= DREF_SSC_SOURCE_ENABLE; /* SSC must be turned on before enabling the CPU output */ - if (intel_panel_use_ssc(dev_priv)) { + if (intel_panel_use_ssc(dev_priv) && can_ssc) { DRM_DEBUG_KMS("Using SSC on panel\n"); temp |= DREF_SSC1_ENABLE; } @@ -5169,7 +5185,7 @@ static void ironlake_update_pch_refclk(struct drm_device *dev) /* Enable CPU source on CPU attached eDP */ if (has_cpu_edp) { - if (intel_panel_use_ssc(dev_priv)) { + if (intel_panel_use_ssc(dev_priv) && can_ssc) { DRM_DEBUG_KMS("Using SSC on eDP\n"); temp |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD; } |