diff options
author | Jonathan Corbet <corbet@lwn.net> | 2016-11-18 16:13:41 -0700 |
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committer | Jonathan Corbet <corbet@lwn.net> | 2016-11-18 16:13:41 -0700 |
commit | 917fef6f7ee8b2fe852692ac49771342bfef9433 (patch) | |
tree | b5932aab90d449841803b6f8679a4564ca2a6eaf /drivers/gpu/drm/i915/intel_bios.c | |
parent | 0c9aa209579d41c9b8bf1fc39ce042bea2ec422d (diff) | |
parent | bc33b0ca11e3df467777a4fa7639ba488c9d4911 (diff) |
Merge tag 'v4.9-rc4' into sound
Bring in -rc4 patches so I can successfully merge the sound doc changes.
Diffstat (limited to 'drivers/gpu/drm/i915/intel_bios.c')
-rw-r--r-- | drivers/gpu/drm/i915/intel_bios.c | 122 |
1 files changed, 77 insertions, 45 deletions
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index c6e69e4cfa83..1f8af87c6294 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -1031,6 +1031,77 @@ static u8 translate_iboost(u8 val) return mapping[val]; } +static void sanitize_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]; + enum port p; + + if (!info->alternate_ddc_pin) + return; + + for_each_port_masked(p, (1 << port) - 1) { + struct ddi_vbt_port_info *i = &dev_priv->vbt.ddi_port_info[p]; + + if (info->alternate_ddc_pin != i->alternate_ddc_pin) + continue; + + DRM_DEBUG_KMS("port %c trying to use the same DDC pin (0x%x) as port %c, " + "disabling port %c DVI/HDMI support\n", + port_name(p), i->alternate_ddc_pin, + port_name(port), port_name(p)); + + /* + * If we have multiple ports supposedly sharing the + * pin, then dvi/hdmi couldn't exist on the shared + * port. Otherwise they share the same ddc bin and + * system couldn't communicate with them separately. + * + * Due to parsing the ports in alphabetical order, + * a higher port will always clobber a lower one. + */ + i->supports_dvi = false; + i->supports_hdmi = false; + i->alternate_ddc_pin = 0; + } +} + +static void sanitize_aux_ch(struct drm_i915_private *dev_priv, + enum port port) +{ + const struct ddi_vbt_port_info *info = + &dev_priv->vbt.ddi_port_info[port]; + enum port p; + + if (!info->alternate_aux_channel) + return; + + for_each_port_masked(p, (1 << port) - 1) { + struct ddi_vbt_port_info *i = &dev_priv->vbt.ddi_port_info[p]; + + if (info->alternate_aux_channel != i->alternate_aux_channel) + continue; + + DRM_DEBUG_KMS("port %c trying to use the same AUX CH (0x%x) as port %c, " + "disabling port %c DP support\n", + port_name(p), i->alternate_aux_channel, + port_name(port), port_name(p)); + + /* + * If we have multiple ports supposedlt sharing the + * aux channel, then DP couldn't exist on the shared + * port. Otherwise they share the same aux channel + * and system couldn't communicate with them separately. + * + * Due to parsing the ports in alphabetical order, + * a higher port will always clobber a lower one. + */ + i->supports_dp = false; + i->alternate_aux_channel = 0; + } +} + static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port, const struct bdb_header *bdb) { @@ -1105,54 +1176,15 @@ static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port, DRM_DEBUG_KMS("Port %c is internal DP\n", port_name(port)); if (is_dvi) { - if (port == PORT_E) { - info->alternate_ddc_pin = ddc_pin; - /* if DDIE share ddc pin with other port, then - * dvi/hdmi couldn't exist on the shared port. - * Otherwise they share the same ddc bin and system - * couldn't communicate with them seperately. */ - if (ddc_pin == DDC_PIN_B) { - dev_priv->vbt.ddi_port_info[PORT_B].supports_dvi = 0; - dev_priv->vbt.ddi_port_info[PORT_B].supports_hdmi = 0; - } else if (ddc_pin == DDC_PIN_C) { - dev_priv->vbt.ddi_port_info[PORT_C].supports_dvi = 0; - dev_priv->vbt.ddi_port_info[PORT_C].supports_hdmi = 0; - } else if (ddc_pin == DDC_PIN_D) { - dev_priv->vbt.ddi_port_info[PORT_D].supports_dvi = 0; - dev_priv->vbt.ddi_port_info[PORT_D].supports_hdmi = 0; - } - } else if (ddc_pin == DDC_PIN_B && port != PORT_B) - DRM_DEBUG_KMS("Unexpected DDC pin for port B\n"); - else if (ddc_pin == DDC_PIN_C && port != PORT_C) - DRM_DEBUG_KMS("Unexpected DDC pin for port C\n"); - else if (ddc_pin == DDC_PIN_D && port != PORT_D) - DRM_DEBUG_KMS("Unexpected DDC pin for port D\n"); + info->alternate_ddc_pin = ddc_pin; + + sanitize_ddc_pin(dev_priv, port); } if (is_dp) { - if (port == PORT_E) { - info->alternate_aux_channel = aux_channel; - /* if DDIE share aux channel with other port, then - * DP couldn't exist on the shared port. Otherwise - * they share the same aux channel and system - * couldn't communicate with them seperately. */ - if (aux_channel == DP_AUX_A) - dev_priv->vbt.ddi_port_info[PORT_A].supports_dp = 0; - else if (aux_channel == DP_AUX_B) - dev_priv->vbt.ddi_port_info[PORT_B].supports_dp = 0; - else if (aux_channel == DP_AUX_C) - dev_priv->vbt.ddi_port_info[PORT_C].supports_dp = 0; - else if (aux_channel == DP_AUX_D) - dev_priv->vbt.ddi_port_info[PORT_D].supports_dp = 0; - } - else if (aux_channel == DP_AUX_A && port != PORT_A) - DRM_DEBUG_KMS("Unexpected AUX channel for port A\n"); - else if (aux_channel == DP_AUX_B && port != PORT_B) - DRM_DEBUG_KMS("Unexpected AUX channel for port B\n"); - else if (aux_channel == DP_AUX_C && port != PORT_C) - DRM_DEBUG_KMS("Unexpected AUX channel for port C\n"); - else if (aux_channel == DP_AUX_D && port != PORT_D) - DRM_DEBUG_KMS("Unexpected AUX channel for port D\n"); + info->alternate_aux_channel = aux_channel; + + sanitize_aux_ch(dev_priv, port); } if (bdb->version >= 158) { |