feat(type_c,pd): add public APIs for Type-C (HUSB320) and PD (FUSB302)

Introduce initial, beta public headers aligned with esp-idf/esp-usb style:
- Type-C core (CC-only): attach/detach/orientation & power-role control
  - File: esp-usb/type_c/include/esp_typec.h
  - Install/uninstall + library info
  - Events: ATTACHED/DETACHED/ORIENTATION/PWR_ROLE/ERROR
  - Factory: esp_typec_port_create_husb320() (HUSB320; CC-only)
  - APIs: esp_typec_set_power_role(), esp_typec_get_orientation(),
          esp_typec_is_attached(), esp_typec_port_destroy()

- Power Delivery (PD-only): runtime role control and sink requests
  - File: esp-usb/type_c/include/esp_typec_pd.h
  - Install/uninstall + optional polling handler + library info
  - Events: ATTACHED/DETACHED/CONTRACT_READY/CONTRACT_LOST/PPS_ADJUSTED/ERROR
  - Factory: esp_typec_pd_port_create_fusb302() (FUSB302; PD-capable)
  - APIs: esp_typec_pd_set_power_role(),
          esp_typec_pd_sink_request_fixed(), esp_typec_pd_sink_request_pps(),
          esp_typec_pd_get_contract(), esp_typec_pd_get_orientation(),
          esp_typec_pd_is_attached(), esp_typec_pd_port_destroy()

Decisions:
- Split CC-only and PD APIs to keep modules independent and build-light.
- Reused event naming across CC and PD for consistency; separate enums to
  avoid coupling.
- Only include HUSB320 (CC-only) and FUSB302 (PD-capable) factories for now;
  removed any HUSB311 references.
- New files use SPDX year 2025 per repo convention.

Notes:
- APIs are intentionally minimal; more controls (source caps, swaps, DRP
  policies) can be added without breaking the current surface.
- Data-role (host/device) integration is out of scope for this step.

Author: igi540

.github/workflows/upload_component.yml

@@ -44,6 +44,7 @@ jobs:
             host/class/uac/usb_host_uac;
             host/class/uvc/usb_host_uvc;
             host/usb;
+            type_c;
           namespace: "espressif"
           # API token will only be available in the master branch in the main repository.
           # However, dry-run doesn't require a valid token.

type_c/CHANGELOG.md

@@ -0,0 +1,5 @@
+# Changelog for USB type C/PD library
+
+## 0.1.0-beta
+
+- Initial version

type_c/CMakeLists.txt

@@ -0,0 +1,6 @@
+
+idf_component_register(
+    SRCS "src/esp_typec.c" "src/esp_typec_pd.c"
+    INCLUDE_DIRS "include"
+    REQUIRES freertos
+)

type_c/LICENSE

@@ -0,0 +1,202 @@
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type_c/README.md

@@ -0,0 +1,134 @@
+# ESP Type-C / USB Power Delivery (esp-usb/type_c)
+
+> **Status:** Beta API — names and behavior may change before v1.0.
+
+This component provides two focused, minimal public APIs for USB Type-C:
+
+- **Type-C Core (CC-only)** — attach/detach, orientation (CC1/CC2), and power-role presence (Rp/Rd).
+  Backed by **HUSB320** (Type-C CC controller; **no PD**).
+- **USB Power Delivery (PD-only)** — PD negotiation, runtime power-role control, fixed/PPS sink requests, and contract reporting.
+  Backed by **FUSB302** (PD-capable TCPC).
+
+The split keeps builds small, avoids unnecessary coupling, and mirrors esp-usb / esp-idf style.
+
+---
+
+## Contents
+
+- [`include/esp_typec.h`](./include/esp_typec.h) — **Type-C Core (CC-only)** public API
+- [`include/esp_typec_pd.h`](./include/esp_typec_pd.h) — **PD-only** public API
+- `src/` — stub sources to make the component build; real backends land incrementally
+- `CMakeLists.txt`, `idf_component.yml` — component metadata
+
+> New files use:
+> `/* SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD */`
+> `/* SPDX-License-Identifier: Apache-2.0 */`
+
+---
+
+## Supported Controllers
+
+| Controller | Capability | API / Factory Function                                   | Notes                          |
+|-----------:|------------|-----------------------------------------------------------|--------------------------------|
+| HUSB320    | Type-C CC  | `esp_typec_port_create_husb320()` (in `esp_typec.h`)     | CC attach/orientation only     |
+| FUSB302    | PD (TCPC)  | `esp_typec_pd_port_create_fusb302()` (in `esp_typec_pd.h`)| Full PD PHY over CC (BMC)      |
+
+> **Not supported here:** CC-only parts for PD; they cannot negotiate PD by design.
+> Additional PD-capable TCPCs (e.g., PTN5110/TCPM family) can be added later using the same factory pattern.
+
+---
+
+## Quick Start
+
+### 1) Type-C Core (CC-only) with HUSB320
+
+```c
+#include "esp_typec.h"
+
+static void on_typec(esp_typec_event_t evt, const void *payload, void *arg)
+{
+    switch (evt) {
+    case ESP_TYPEC_EVENT_ATTACHED: {
+        const esp_typec_evt_attached_t *a = payload;
+        // a->flags & ESP_TYPEC_FLAG_CC2   -> polarity
+        // a->rp_cur_ma                    -> advertised current (if known)
+        break;
+    }
+    case ESP_TYPEC_EVENT_ORIENTATION: {
+        const bool *cc2_active = payload;
+        (void)cc2_active;
+        break;
+    }
+    case ESP_TYPEC_EVENT_DETACHED:
+    default: break;
+    }
+}
+
+void app_main(void)
+{
+    ESP_ERROR_CHECK(esp_typec_install());
+
+    esp_typec_port_config_t port_cfg = {
+        .default_power_role = ESP_TYPEC_PWR_SINK,
+        .try_snk = true,
+        .try_src = false,
+        .task_stack = 0,
+        .task_prio = 0,
+    };
+    esp_typec_husb320_config_t hw = {
+        .i2c_port = 0, .i2c_addr = 0x60, .gpio_int = 4, .use_intr = true,
+    };
+    esp_typec_port_handle_t h;
+    ESP_ERROR_CHECK(esp_typec_port_create_husb320(&port_cfg, &hw, on_typec, NULL, &h));
+
+    // Optional: request a role change (sets Rp/Rd)
+    ESP_ERROR_CHECK(esp_typec_set_power_role(h, ESP_TYPEC_PWR_DRP));
+}
+```
+
+### 1) Power Delivery (PD) with FUSB302
+
+```c
+#include "esp_typec_pd.h"
+
+static void on_pd(esp_typec_pd_event_t evt, const void *payload, void *arg)
+{
+    switch (evt) {
+    case ESP_TYPEC_PD_EVENT_CONTRACT_READY: {
+        const esp_typec_pd_contract_t *c = payload;
+        // c->mv, c->ma, c->selected_pdo, c->flags (PPS/CC2)
+        break;
+    }
+    case ESP_TYPEC_PD_EVENT_ATTACHED:
+    case ESP_TYPEC_PD_EVENT_DETACHED:
+    default: break;
+    }
+}
+
+void app_main(void)
+{
+    esp_typec_pd_install_config_t lib_cfg = {
+        .skip_ctrl_intr_alloc = false,
+        .intr_flags = 0,
+    };
+    ESP_ERROR_CHECK(esp_typec_pd_install(&lib_cfg));
+
+    esp_typec_pd_port_config_t port_cfg = {
+        .default_power_role   = ESP_TYPEC_PD_PWR_SINK,
+        .sink_i_min_ma        = 500,
+        .sink_fixed_pref_mv   = 9000,    // 0 = auto select best
+        .enable_pps           = true,
+        .sink_pps_v_min_mv    = 5000, .sink_pps_v_max_mv = 11000, .sink_pps_i_max_ma = 2000,
+        .src_pdos             = NULL, .src_pdo_count = 0,
+        .task_stack           = 0, .task_prio = 0,
+    };
+    esp_typec_pd_fusb302_config_t hw = {
+        .i2c_port = 0, .i2c_addr = 0x22, .gpio_int = 5, .use_intr = true,
+    };
+    esp_typec_pd_port_handle_t h;
+    ESP_ERROR_CHECK(esp_typec_pd_port_create_fusb302(&port_cfg, &hw, on_pd, NULL, &h));
+
+    // Example: request a specific Fixed PDO after Source_Capabilities are received
+    // ESP_ERROR_CHECK(esp_typec_pd_sink_request_fixed(h, 9000, 2000));
+}
+```

type_c/examples/pd_fusb302_attach/CMakeLists.txt

@@ -0,0 +1,8 @@
+cmake_minimum_required(VERSION 3.16)
+
+# Tell IDF where to find the local "type_c" component (two levels up).
+# This lets the example depend on your in-tree component without copying it.
+set(EXTRA_COMPONENT_DIRS "${CMAKE_CURRENT_LIST_DIR}/../..")
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(pd_fusb302_attach)

type_c/examples/pd_fusb302_attach/main/CMakeLists.txt

@@ -0,0 +1,3 @@
+idf_component_register(SRCS "main.c"
+                       PRIV_REQUIRES esp_driver_i2c
+                       REQUIRES type_c)