[dm][input] support input #11031

components/drivers/input/input_power.c

@@ -0,0 +1,130 @@
+/*
+ * Copyright (c) 2006-2022, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2022-3-08      GuEe-GUI     the first version
+ */
+
+#include <rthw.h>
+#include <rtthread.h>
+#include <rtdevice.h>
+
+#define DBG_TAG "input.power"
+#define DBG_LVL DBG_INFO
+#include <rtdbg.h>
+
+struct input_event_cap
+{
+    rt_uint16_t code;
+    rt_int32_t value;
+    rt_int32_t current;
+};
+
+static rt_bool_t power_input_identify(struct rt_input_handler *handler,
+        struct rt_input_device *idev)
+{
+    struct input_event_cap *cap = handler->priv;
+
+    if (rt_bitmap_test_bit(idev->key_map, cap->code))
+    {
+        if (cap->value == cap->current)
+        {
+            return RT_TRUE;
+        }
+
+        ++cap->current;
+    }
+
+    return RT_FALSE;
+}
+
+static rt_bool_t power_input_callback(struct rt_input_handler *handler,
+        struct rt_input_event *ev)
+{
+    if (ev->code == KEY_POWER)
+    {
+        if (ev->value == 0)
+        {
+            rt_hw_cpu_shutdown();
+        }
+
+        return RT_TRUE;
+    }
+    else if (ev->code == KEY_RESTART)
+    {
+        if (ev->value == 0)
+        {
+            rt_hw_cpu_reset();
+        }
+
+        return RT_TRUE;
+    }
+
+    return RT_FALSE;
+}
+
+static rt_bool_t power_test_cap(struct rt_input_handler *handler,
+        struct rt_input_device *idev)
+{
+    struct input_event_cap *cap = handler->priv;
+
+    if (rt_bitmap_test_bit(idev->key_map, cap->code))
+    {
+        ++cap->value;
+    }
+
+    return RT_FALSE;
+}
+
+static void power_handler_install(rt_uint16_t code)
+{
+    rt_uint32_t idev_count;
+    struct input_event_cap cap;
+    struct rt_input_handler tmp_handler, *handlers;
+
+    cap.code = code;
+    cap.value = 0;
+    tmp_handler.idev = RT_NULL;
+    tmp_handler.identify = &power_test_cap;
+    tmp_handler.callback = &power_input_callback;
+    tmp_handler.priv = &cap;
+    rt_input_add_handler(&tmp_handler); /* Just test */
+
+    if (!(idev_count = cap.value))
+    {
+        return;
+    }
+
+    handlers = rt_calloc(idev_count, sizeof(*handlers));
+
+    if (!handlers)
+    {
+        LOG_E("No memory to install power handler");
+        return;
+    }
+
+    for (int i = 0; i < idev_count; ++i, ++handlers)
+    {
+        cap.value = i;
+        cap.current = 0;
+
+        handlers->identify = &power_input_identify;
+        handlers->callback = &power_input_callback;
+        handlers->priv = &cap;
+
+        rt_input_add_handler(handlers);
+        handlers->priv = RT_NULL;
+    }
+}
+
+static int input_event_power_init(void)
+{
+    power_handler_install(KEY_POWER);
+    power_handler_install(KEY_RESTART);
+
+    return 0;
+}
+INIT_ENV_EXPORT(input_event_power_init);