diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_tc.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_tc.c | 34 |
1 files changed, 27 insertions, 7 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_tc.c b/drivers/gpu/drm/i915/display/intel_tc.c index c23c210a55f5..3ffece568ed9 100644 --- a/drivers/gpu/drm/i915/display/intel_tc.c +++ b/drivers/gpu/drm/i915/display/intel_tc.c @@ -556,7 +556,7 @@ intel_tc_port_get_target_mode(struct intel_digital_port *dig_port) } static void intel_tc_port_reset_mode(struct intel_digital_port *dig_port, - int required_lanes) + int required_lanes, bool force_disconnect) { struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); enum tc_port_mode old_tc_mode = dig_port->tc_mode; @@ -572,7 +572,8 @@ static void intel_tc_port_reset_mode(struct intel_digital_port *dig_port, } icl_tc_phy_disconnect(dig_port); - icl_tc_phy_connect(dig_port, required_lanes); + if (!force_disconnect) + icl_tc_phy_connect(dig_port, required_lanes); drm_dbg_kms(&i915->drm, "Port %s: TC port mode reset (%s -> %s)\n", dig_port->tc_port_name, @@ -662,7 +663,7 @@ bool intel_tc_port_connected(struct intel_encoder *encoder) } static void __intel_tc_port_lock(struct intel_digital_port *dig_port, - int required_lanes) + int required_lanes, bool force_disconnect) { struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); intel_wakeref_t wakeref; @@ -676,8 +677,9 @@ static void __intel_tc_port_lock(struct intel_digital_port *dig_port, tc_cold_wref = tc_cold_block(dig_port); - if (intel_tc_port_needs_reset(dig_port)) - intel_tc_port_reset_mode(dig_port, required_lanes); + if (force_disconnect || intel_tc_port_needs_reset(dig_port)) + intel_tc_port_reset_mode(dig_port, required_lanes, + force_disconnect); tc_cold_unblock(dig_port, tc_cold_wref); } @@ -688,7 +690,7 @@ static void __intel_tc_port_lock(struct intel_digital_port *dig_port, void intel_tc_port_lock(struct intel_digital_port *dig_port) { - __intel_tc_port_lock(dig_port, 1); + __intel_tc_port_lock(dig_port, 1, false); } void intel_tc_port_unlock(struct intel_digital_port *dig_port) @@ -702,6 +704,24 @@ void intel_tc_port_unlock(struct intel_digital_port *dig_port) wakeref); } +/** + * intel_tc_port_disconnect_phy: disconnect TypeC PHY from display port + * @dig_port: digital port + * + * Disconnect the given digital port from its TypeC PHY (handing back the + * control of the PHY to the TypeC subsystem). The only purpose of this + * function is to force the disconnect even with a TypeC display output still + * plugged to the TypeC connector, which is required by the TypeC firmwares + * during system suspend and shutdown. Otherwise - during the unplug event + * handling - the PHY ownership is released automatically by + * intel_tc_port_reset_mode(), when calling this function is not required. + */ +void intel_tc_port_disconnect_phy(struct intel_digital_port *dig_port) +{ + __intel_tc_port_lock(dig_port, 1, true); + intel_tc_port_unlock(dig_port); +} + bool intel_tc_port_ref_held(struct intel_digital_port *dig_port) { return mutex_is_locked(&dig_port->tc_lock) || @@ -711,7 +731,7 @@ bool intel_tc_port_ref_held(struct intel_digital_port *dig_port) void intel_tc_port_get_link(struct intel_digital_port *dig_port, int required_lanes) { - __intel_tc_port_lock(dig_port, required_lanes); + __intel_tc_port_lock(dig_port, required_lanes, false); dig_port->tc_link_refcount++; intel_tc_port_unlock(dig_port); } |