type-c-service: Migrate to per-port events

[RobertZ2011]

Currently, events are signaled to the service through a bitvec representing which ports have pending events. The service then reads pending events from each port. Refactor to a design where each port pushes events to the service instead. Also do some renaming and clean-up of event types.

[Copilot]

Pull request overview

Refactors Type-C event delivery from a “pending-port bitfield + per-port polling” model to a per-port push/event-stream model, along with renaming/cleanup of port event types and removal of related legacy APIs.

Changes:

• Introduces per-port event delivery to the service via Context::send_port_event() and per-port channels (PortRegistration).
• Renames/splits port event types (PortEventBitfield, PortStatusEventBitfield, PortNotificationEventBitfield, VdmData) and removes the old pending-bitvec mechanism (PortPending, Cached, ClearEvents/GetPdAlert commands).
• Updates wrapper/service/event loops and examples to use the new push-based event path; removes bitvec dependency.

Reviewed changes

Copilot reviewed 18 out of 27 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
type-c-service/src/wrapper/vdm.rs	Converts VDM finalization to send per-port service events (PortEventData::Vdm).
type-c-service/src/wrapper/power.rs	Simplifies PortState generic usage (lifetime removal).
type-c-service/src/wrapper/pd.rs	Removes legacy port-status/events/PD-alert pull commands from wrapper PD command processing.
type-c-service/src/wrapper/mod.rs	Switches wrapper event loop to produce unified LocalPortEvent and send service events directly.
type-c-service/src/wrapper/message.rs	Replaces separate status/notification wrapper events with a single LocalPortEvent.
type-c-service/src/wrapper/backing.rs	Removes pending-events + PD-alert buffering; stores PortRegistration per port.
type-c-service/src/task.rs	Adapts task loop to EventReceiver::wait_next() being infallible.
type-c-service/src/service/ucsi.rs	Updates UCSI handling to the renamed status-event bitfield type.
type-c-service/src/service/pd.rs	Removes PD alert pull API surface from the service layer.
type-c-service/src/service/mod.rs	Replaces bitfield polling with select_slice over per-port receivers and handles PortEvent.
type-c-service/src/lib.rs	Generalizes PortEventStreamer over an iterator and updates tests for renamed event types.
type-c-service/src/driver/tps6699x.rs	Updates driver event storage/clearing to use PortEventBitfield.
type-c-interface/src/service/event.rs	Adds service-level PortEvent / PortEventData to carry pushed per-port events.
type-c-interface/src/service/context.rs	Removes pending-port signaling APIs and adds send_port_event; exposes controller list.
type-c-interface/src/port/mod.rs	Introduces PortRegistration (per-port sender/receiver) and removes legacy commands/types.
type-c-interface/src/port/event.rs	Renames/refactors event bitfields and introduces VdmData + unified PortEvent enum.
type-c-interface/Cargo.toml	Drops bitvec dependency.
examples/std/src/lib/type_c/mock_controller.rs	Updates mock controller to use PortEventBitfield.
examples/std/src/bin/type_c/unconstrained.rs	Wires per-port channels and PortRegistration into storage initialization.
examples/std/src/bin/type_c/ucsi.rs	Wires per-port channels and PortRegistration into storage initialization.
examples/std/src/bin/type_c/service.rs	Wires per-port channels and PortRegistration into storage initialization.
examples/std/src/bin/type_c/basic.rs	Updates basic example to register Device with PortRegistration + per-port channels.
examples/std/Cargo.lock	Removes bitvec from lockfile via dependency cleanup.
examples/rt685s-evk/src/bin/type_c.rs	Wires per-port channels and PortRegistration into embedded example storage init.
examples/rt685s-evk/src/bin/type_c_cfu.rs	Wires per-port channels and PortRegistration into embedded CFU example storage init.
examples/rt685s-evk/Cargo.lock	Removes bitvec from lockfile via dependency cleanup.
Cargo.lock	Removes bitvec from workspace lockfile via dependency cleanup.

[Copilot]

Pull request overview

Copilot reviewed 18 out of 27 changed files in this pull request and generated 2 comments.