diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_tc.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_tc.c | 64 |
1 files changed, 58 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_tc.c b/drivers/gpu/drm/i915/display/intel_tc.c index 275618bedf32..0cf33d4d21c3 100644 --- a/drivers/gpu/drm/i915/display/intel_tc.c +++ b/drivers/gpu/drm/i915/display/intel_tc.c @@ -34,6 +34,7 @@ tc_port_load_fia_params(struct drm_i915_private *i915, if (INTEL_INFO(i915)->display.has_modular_fia) { modular_fia = intel_uncore_read(&i915->uncore, PORT_TX_DFLEXDPSP(FIA1)); + drm_WARN_ON(&i915->drm, modular_fia == 0xffffffff); modular_fia &= MODULAR_FIA_MASK; } else { modular_fia = 0; @@ -52,6 +53,37 @@ tc_port_load_fia_params(struct drm_i915_private *i915, } } +static intel_wakeref_t +tc_cold_block(struct intel_digital_port *dig_port) +{ + struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); + enum intel_display_power_domain domain; + + if (INTEL_GEN(i915) != 11 || !dig_port->tc_legacy_port) + return 0; + + domain = intel_legacy_aux_to_power_domain(dig_port->aux_ch); + return intel_display_power_get(i915, domain); +} + +static void +tc_cold_unblock(struct intel_digital_port *dig_port, intel_wakeref_t wakeref) +{ + struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); + enum intel_display_power_domain domain; + + /* + * wakeref == -1, means some error happened saving save_depot_stack but + * power should still be put down and 0 is a invalid save_depot_stack + * id so can be used to skip it for non TC legacy ports. + */ + if (wakeref == 0) + return; + + domain = intel_legacy_aux_to_power_domain(dig_port->aux_ch); + intel_display_power_put_async(i915, domain, wakeref); +} + u32 intel_tc_port_get_lane_mask(struct intel_digital_port *dig_port) { struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); @@ -420,9 +452,14 @@ static void intel_tc_port_reset_mode(struct intel_digital_port *dig_port, enum tc_port_mode old_tc_mode = dig_port->tc_mode; intel_display_power_flush_work(i915); - drm_WARN_ON(&i915->drm, - intel_display_power_is_enabled(i915, - intel_aux_power_domain(dig_port))); + if (INTEL_GEN(i915) != 11 || !dig_port->tc_legacy_port) { + enum intel_display_power_domain aux_domain; + bool aux_powered; + + aux_domain = intel_aux_power_domain(dig_port); + aux_powered = intel_display_power_is_enabled(i915, aux_domain); + drm_WARN_ON(&i915->drm, aux_powered); + } icl_tc_phy_disconnect(dig_port); icl_tc_phy_connect(dig_port, required_lanes); @@ -445,9 +482,11 @@ void intel_tc_port_sanitize(struct intel_digital_port *dig_port) { struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); struct intel_encoder *encoder = &dig_port->base; + intel_wakeref_t tc_cold_wref; int active_links = 0; mutex_lock(&dig_port->tc_lock); + tc_cold_wref = tc_cold_block(dig_port); dig_port->tc_mode = intel_tc_port_get_current_mode(dig_port); if (dig_port->dp.is_mst) @@ -473,6 +512,7 @@ out: dig_port->tc_port_name, tc_port_mode_name(dig_port->tc_mode)); + tc_cold_unblock(dig_port, tc_cold_wref); mutex_unlock(&dig_port->tc_lock); } @@ -494,10 +534,15 @@ static bool intel_tc_port_needs_reset(struct intel_digital_port *dig_port) bool intel_tc_port_connected(struct intel_digital_port *dig_port) { bool is_connected; + intel_wakeref_t tc_cold_wref; intel_tc_port_lock(dig_port); + tc_cold_wref = tc_cold_block(dig_port); + is_connected = tc_port_live_status_mask(dig_port) & BIT(dig_port->tc_mode); + + tc_cold_unblock(dig_port, tc_cold_wref); intel_tc_port_unlock(dig_port); return is_connected; @@ -513,9 +558,16 @@ static void __intel_tc_port_lock(struct intel_digital_port *dig_port, mutex_lock(&dig_port->tc_lock); - if (!dig_port->tc_link_refcount && - intel_tc_port_needs_reset(dig_port)) - intel_tc_port_reset_mode(dig_port, required_lanes); + if (!dig_port->tc_link_refcount) { + intel_wakeref_t tc_cold_wref; + + 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); + + tc_cold_unblock(dig_port, tc_cold_wref); + } drm_WARN_ON(&i915->drm, dig_port->tc_lock_wakeref); dig_port->tc_lock_wakeref = wakeref; |