添加rtthread相关代码

riscv/rtthread/components/drivers/include/dt-bindings/pin/pin.h

@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2006-2022, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef __DT_BINDINGS_PIN_PIN_H__
+#define __DT_BINDINGS_PIN_PIN_H__
+
+/* Bit 0 express polarity */
+#define PIN_ACTIVE_HIGH         0
+#define PIN_ACTIVE_LOW          1
+
+/* Bit 1 express single-endedness */
+#define PIN_PUSH_PULL           0
+#define PIN_SINGLE_ENDED        2
+
+/* Bit 2 express Open drain or open source */
+#define PIN_LINE_OPEN_SOURCE    0
+#define PIN_LINE_OPEN_DRAIN     4
+
+/*
+ * Open Drain/Collector is the combination of single-ended open drain interface.
+ * Open Source/Emitter is the combination of single-ended open source interface.
+ */
+#define PIN_OPEN_DRAIN          (PIN_SINGLE_ENDED | PIN_LINE_OPEN_DRAIN)
+#define PIN_OPEN_SOURCE         (PIN_SINGLE_ENDED | PIN_LINE_OPEN_SOURCE)
+
+/* Bit 3 express PIN suspend/resume and reset persistence */
+#define PIN_PERSISTENT          0
+#define PIN_TRANSITORY          8
+
+/* Bit 4 express pull up */
+#define PIN_PULL_UP             16
+
+/* Bit 5 express pull down */
+#define PIN_PULL_DOWN           32
+
+/* Bit 6 express pull disable */
+#define PIN_PULL_DISABLE        64
+
+#endif /* __DT_BINDINGS_PIN_PIN_H__ */

riscv/rtthread/components/drivers/include/dt-bindings/pin/state.h

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2006-2022, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef __DT_BINDINGS_PIN_STATE_H__
+#define __DT_BINDINGS_PIN_STATE_H__
+
+#define PIND_FLAGS_BIT_DIR_SET       (1 << 0)
+#define PIND_FLAGS_BIT_DIR_OUT       (1 << 1)
+#define PIND_FLAGS_BIT_DIR_VAL       (1 << 2)
+#define PIND_FLAGS_BIT_OPEN_DRAIN    (1 << 3)
+#define PIND_FLAGS_BIT_NONEXCLUSIVE  (1 << 4)
+
+/* Don't change anything */
+#define PIND_ASIS                 0
+/* Set lines to input mode */
+#define PIND_IN                   PIND_FLAGS_BIT_DIR_SET
+/* Set lines to output and drive them low */
+#define PIND_OUT_LOW              (PIND_FLAGS_BIT_DIR_SET | PIND_FLAGS_BIT_DIR_OUT)
+/* Set lines to output and drive them high */
+#define PIND_OUT_HIGH             (PIND_FLAGS_BIT_DIR_SET | PIND_FLAGS_BIT_DIR_OUT | PIND_FLAGS_BIT_DIR_VAL)
+/* Set lines to open-drain output and drive them low */
+#define PIND_OUT_LOW_OPEN_DRAIN   (PIND_OUT_LOW | PIND_FLAGS_BIT_OPEN_DRAIN)
+/* Set lines to open-drain output and drive them high */
+#define PIND_OUT_HIGH_OPEN_DRAIN  (PIND_OUT_HIGH | PIND_FLAGS_BIT_OPEN_DRAIN)
+
+#endif /* __DT_BINDINGS_PIN_STATE_H__ */