diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_hdmi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_hdmi.c | 113 |
1 files changed, 91 insertions, 22 deletions
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index e30c27acb94f..e8abea7594ec 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -1843,45 +1843,114 @@ void intel_hdmi_handle_sink_scrambling(struct intel_encoder *encoder, DRM_DEBUG_KMS("sink scrambling handled\n"); } -static u8 intel_hdmi_ddc_pin(struct drm_i915_private *dev_priv, - enum port port) +static u8 chv_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port) { - const struct ddi_vbt_port_info *info = - &dev_priv->vbt.ddi_port_info[port]; u8 ddc_pin; - if (info->alternate_ddc_pin) { - DRM_DEBUG_KMS("Using DDC pin 0x%x for port %c (VBT)\n", - info->alternate_ddc_pin, port_name(port)); - return info->alternate_ddc_pin; + switch (port) { + case PORT_B: + ddc_pin = GMBUS_PIN_DPB; + break; + case PORT_C: + ddc_pin = GMBUS_PIN_DPC; + break; + case PORT_D: + ddc_pin = GMBUS_PIN_DPD_CHV; + break; + default: + MISSING_CASE(port); + ddc_pin = GMBUS_PIN_DPB; + break; } + return ddc_pin; +} + +static u8 bxt_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port) +{ + u8 ddc_pin; switch (port) { case PORT_B: - if (IS_GEN9_LP(dev_priv) || HAS_PCH_CNP(dev_priv)) - ddc_pin = GMBUS_PIN_1_BXT; - else - ddc_pin = GMBUS_PIN_DPB; + ddc_pin = GMBUS_PIN_1_BXT; break; case PORT_C: - if (IS_GEN9_LP(dev_priv) || HAS_PCH_CNP(dev_priv)) - ddc_pin = GMBUS_PIN_2_BXT; - else - ddc_pin = GMBUS_PIN_DPC; + ddc_pin = GMBUS_PIN_2_BXT; + break; + default: + MISSING_CASE(port); + ddc_pin = GMBUS_PIN_1_BXT; + break; + } + return ddc_pin; +} + +static u8 cnp_port_to_ddc_pin(struct drm_i915_private *dev_priv, + enum port port) +{ + u8 ddc_pin; + + switch (port) { + case PORT_B: + ddc_pin = GMBUS_PIN_1_BXT; + break; + case PORT_C: + ddc_pin = GMBUS_PIN_2_BXT; break; case PORT_D: - if (HAS_PCH_CNP(dev_priv)) - ddc_pin = GMBUS_PIN_4_CNP; - else if (IS_CHERRYVIEW(dev_priv)) - ddc_pin = GMBUS_PIN_DPD_CHV; - else - ddc_pin = GMBUS_PIN_DPD; + ddc_pin = GMBUS_PIN_4_CNP; + break; + default: + MISSING_CASE(port); + ddc_pin = GMBUS_PIN_1_BXT; + break; + } + return ddc_pin; +} + +static u8 g4x_port_to_ddc_pin(struct drm_i915_private *dev_priv, + enum port port) +{ + u8 ddc_pin; + + switch (port) { + case PORT_B: + ddc_pin = GMBUS_PIN_DPB; + break; + case PORT_C: + ddc_pin = GMBUS_PIN_DPC; + break; + case PORT_D: + ddc_pin = GMBUS_PIN_DPD; break; default: MISSING_CASE(port); ddc_pin = GMBUS_PIN_DPB; break; } + return ddc_pin; +} + +static u8 intel_hdmi_ddc_pin(struct drm_i915_private *dev_priv, + enum port port) +{ + const struct ddi_vbt_port_info *info = + &dev_priv->vbt.ddi_port_info[port]; + u8 ddc_pin; + + if (info->alternate_ddc_pin) { + DRM_DEBUG_KMS("Using DDC pin 0x%x for port %c (VBT)\n", + info->alternate_ddc_pin, port_name(port)); + return info->alternate_ddc_pin; + } + + if (IS_CHERRYVIEW(dev_priv)) + ddc_pin = chv_port_to_ddc_pin(dev_priv, port); + else if (IS_GEN9_LP(dev_priv)) + ddc_pin = bxt_port_to_ddc_pin(dev_priv, port); + else if (HAS_PCH_CNP(dev_priv)) + ddc_pin = cnp_port_to_ddc_pin(dev_priv, port); + else + ddc_pin = g4x_port_to_ddc_pin(dev_priv, port); DRM_DEBUG_KMS("Using DDC pin 0x%x for port %c (platform default)\n", ddc_pin, port_name(port)); |