输入设备补充文档和设备接口

components/drivers/Kconfig

@@ -211,6 +211,19 @@ config RT_USING_AUDIO
     bool "Using Audio device drivers"
     default n
 
+menu "Using Input Device"
+    config RT_USING_INPUT
+    bool "Using Input devices"
+    default n
+
+	if RT_USING_INPUT
+	    config INPUT_USING_TOUCH
+		bool "Enable TouchScren"
+		default n
+
+    endif
+endmenu
+
 menu "Using WiFi"
     config RT_USING_WIFI
     bool "Using Wi-Fi framework"

components/drivers/include/drivers/input.h

@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/*
+ * File       : input.h
+ *
+ * Change Logs:
+ * Date           Author        Notes
+   2018-10-10     heyuanjie87   first version
+
+ */
+
+#ifndef __INPUT_H__
+#define __INPUT_H__
+
+#include <rtthread.h>
+#include <stdint.h>
+
+#include "input_ev_code.h"
+
+typedef enum
+{
+    INPUT_DEVTYPE_KBD = 1,
+    INPUT_DEVTYPE_TOUCH = 2,
+} input_devtype_t;
+
+struct input_event;
+struct input_ops;
+struct input_handler;
+
+struct input_value
+{
+    uint8_t type;
+    uint16_t code;
+    int value;
+};
+
+typedef struct input_dev
+{
+    struct rt_device parent;
+    const struct input_ops *ops;
+
+    /* driver not  touch */
+    uint8_t type; /* @input_devtype_t */
+    struct input_value *buf;
+    uint8_t wpos;
+    uint8_t numbuf;
+
+    struct input_handler *handler;
+    rt_list_t node;
+} rt_input_t;
+
+struct input_ops
+{
+    int (*init)(rt_input_t *dev);
+    void (*deinit)(rt_input_t *dev);
+};
+
+#pragma pack(1)
+struct input_event
+{
+    uint16_t type;
+    uint16_t code;
+    int value;
+    uint32_t usec;
+};
+#pragma pack()
+
+struct input_handler
+{
+    struct rt_device parent;
+    uint8_t type; /* @input_devtype_t */
+    /* recv events from low driver */
+    void (*events)(struct input_handler *handler, struct input_dev *dev,
+                   struct input_value *v, int cnt);
+    /* recv connection status from low driver */
+    void (*connect)(struct input_handler *handler, struct input_dev *dev, 
+                    int state);
+
+    rt_list_t node;
+    rt_list_t c_list; /* clients connect to this list */
+    rt_list_t d_list; /* input devices connect to this list */
+};
+
+int rt_input_device_register(rt_input_t *dev, int devtype, const char *name);
+int rt_input_device_unregister(rt_input_t *dev);
+
+int rt_input_handler_register(struct input_handler *handler);
+int rt_input_device_open(struct input_handler *h);
+int rt_input_device_close(struct input_handler *h);
+
+int rt_input_report(rt_input_t *dev, int type, int code, int value);
+int rt_input_rel_report(rt_input_t *dev, int code, int value);
+int rt_input_abs_report(rt_input_t *dev, int code, int value);
+int rt_input_key_report(rt_input_t *dev, int code, int value);
+int rt_input_sync(rt_input_t *dev);
+
+void _input_gettime(struct input_event *ev);
+
+#endif