Merge pull request #2104 from hathach/g4-pd

Initial support for USB PD stack

1 files changed, 143 insertions, 0 deletions

diff --git a/src/typec/tcd.h b/src/typec/tcd.h
new file mode 100644
index 000000000..86499c951
--- /dev/null
+++ b/src/typec/tcd.h
@@ -0,0 +1,143 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2023 Ha Thach ([email protected]) for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#ifndef _TUSB_TCD_H_
+#define _TUSB_TCD_H_
+
+#include "common/tusb_common.h"
+#include "pd_types.h"
+
+#include "osal/osal.h"
+#include "common/tusb_fifo.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+//--------------------------------------------------------------------+
+//
+//--------------------------------------------------------------------+
+
+enum {
+  TCD_EVENT_INVALID = 0,
+  TCD_EVENT_CC_CHANGED,
+  TCD_EVENT_RX_COMPLETE,
+  TCD_EVENT_TX_COMPLETE,
+};
+
+typedef struct TU_ATTR_PACKED {
+  uint8_t rhport;
+  uint8_t event_id;
+
+  union {
+    struct {
+      uint8_t cc_state[2];
+    } cc_changed;
+
+    struct TU_ATTR_PACKED {
+      uint16_t result : 2;
+      uint16_t xferred_bytes : 14;
+    } xfer_complete;
+  };
+
+} tcd_event_t;;
+
+//--------------------------------------------------------------------+
+//
+//--------------------------------------------------------------------+
+
+// Initialize controller
+bool tcd_init(uint8_t rhport, uint32_t port_type);
+
+// Enable interrupt
+void tcd_int_enable (uint8_t rhport);
+
+// Disable interrupt
+void tcd_int_disable(uint8_t rhport);
+
+// Interrupt Handler
+void tcd_int_handler(uint8_t rhport);
+
+//--------------------------------------------------------------------+
+//
+//--------------------------------------------------------------------+
+
+bool tcd_msg_receive(uint8_t rhport, uint8_t* buffer, uint16_t total_bytes);
+bool tcd_msg_send(uint8_t rhport, uint8_t const* buffer, uint16_t total_bytes);
+
+//--------------------------------------------------------------------+
+// Event API (implemented by stack)
+// Called by TCD to notify stack
+//--------------------------------------------------------------------+
+
+extern void tcd_event_handler(tcd_event_t const * event, bool in_isr);
+
+TU_ATTR_ALWAYS_INLINE static inline
+void tcd_event_cc_changed(uint8_t rhport, uint8_t cc1, uint8_t cc2, bool in_isr) {
+  tcd_event_t event = {
+    .rhport   = rhport,
+    .event_id = TCD_EVENT_CC_CHANGED,
+    .cc_changed = {
+        .cc_state = {cc1, cc2 }
+    }
+  };
+
+  tcd_event_handler(&event, in_isr);
+}
+
+TU_ATTR_ALWAYS_INLINE static inline
+void tcd_event_rx_complete(uint8_t rhport, uint16_t xferred_bytes, uint8_t result, bool in_isr) {
+  tcd_event_t event = {
+    .rhport   = rhport,
+    .event_id = TCD_EVENT_RX_COMPLETE,
+    .xfer_complete = {
+        .xferred_bytes = xferred_bytes,
+        .result        = result
+    }
+  };
+
+  tcd_event_handler(&event, in_isr);
+}
+
+TU_ATTR_ALWAYS_INLINE static inline
+void tcd_event_tx_complete(uint8_t rhport, uint16_t xferred_bytes, uint8_t result, bool in_isr) {
+  tcd_event_t event = {
+      .rhport   = rhport,
+      .event_id = TCD_EVENT_TX_COMPLETE,
+      .xfer_complete = {
+          .xferred_bytes = xferred_bytes,
+          .result        = result
+      }
+  };
+
+  tcd_event_handler(&event, in_isr);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif