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drm/i915/icl: Set TC type to unknown when a sudden disconnection happen 

Otherwise it would be in a inconsistent state as port is disconnected
but with a valid tc type.

Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181030215750.28213-3-jose.souza@intel.com
This commit is contained in:
José Roberto de Souza 2018-10-30 14:57:48 -07:00 committed by Rodrigo Vivi
parent b298ba5f51
commit d1b5973c87
1 changed files with 4 additions and 3 deletions
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7
drivers/gpu/drm/i915/intel_dp.c
View File

@ -5031,6 +5031,9 @@ static void icl_update_tc_port_type(struct drm_i915_private *dev_priv,
type_str);
}
static void icl_tc_phy_disconnect(struct drm_i915_private *dev_priv,
struct intel_digital_port *dig_port);
/*
* This function implements the first part of the Connect Flow described by our
* specification, Gen11 TypeC Programming chapter. The rest of the flow (reading
@ -5085,9 +5088,7 @@ static bool icl_tc_phy_connect(struct drm_i915_private *dev_priv,
if (dig_port->tc_type == TC_PORT_TYPEC &&
!(I915_READ(PORT_TX_DFLEXDPSP) & TC_LIVE_STATE_TC(tc_port))) {
DRM_DEBUG_KMS("TC PHY %d sudden disconnect.\n", tc_port);
val = I915_READ(PORT_TX_DFLEXDPCSSS);
val &= ~DP_PHY_MODE_STATUS_NOT_SAFE(tc_port);
I915_WRITE(PORT_TX_DFLEXDPCSSS, val);
icl_tc_phy_disconnect(dev_priv, dig_port);
return false;
}