diff options
| author | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2015-08-08 03:01:16 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-08-14 18:50:39 +0300 |
| commit | 500ea70d503ed9ba448611049a4a718c2761a5f2 (patch) | |
| tree | 5d22bc535ab8b2c050828213c4525ece667091e3 /drivers/gpu/drm/i915/intel_bios.c | |
| parent | a513e3d75a3bb41cf2648764a2567879f6d138e5 (diff) | |
| download | linux-500ea70d503ed9ba448611049a4a718c2761a5f2.tar.xz | |
drm/i915: Set alternate aux for DDI-E
There is no correspondent Aux channel for DDI-E.
So we need to rely on VBT to let us know witch one
is being used instead.
v2: Removing some trailing spaces and giving proper
credit to Xiong that added a nice way to avoid port
conflicts by setting supports_dp = 0 when using
equivalent aux for DDI-E.
Credits-to: Xiong Zhang <xiong.y.zhang@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Xiong Zhang <xiong.y.zhang@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_bios.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_bios.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index 2ff9eb00fdec..630d997c05a0 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -968,13 +968,28 @@ static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port, } if (is_dp) { - if (aux_channel == 0x40 && port != PORT_A) + 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"); - if (aux_channel == 0x10 && port != PORT_B) + else if (aux_channel == DP_AUX_B && port != PORT_B) DRM_DEBUG_KMS("Unexpected AUX channel for port B\n"); - if (aux_channel == 0x20 && port != PORT_C) + else if (aux_channel == DP_AUX_C && port != PORT_C) DRM_DEBUG_KMS("Unexpected AUX channel for port C\n"); - if (aux_channel == 0x30 && port != PORT_D) + else if (aux_channel == DP_AUX_D && port != PORT_D) DRM_DEBUG_KMS("Unexpected AUX channel for port D\n"); } |