Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / input / apm-power.c

diff --git a/kernel/drivers/input/apm-power.c b/kernel/drivers/input/apm-power.c
new file mode 100644 (file)
index 0000000..650177a
--- /dev/null
+++ b/kernel/drivers/input/apm-power.c
@@ -0,0 +1,126 @@
+/*
+ *  Input Power Event -> APM Bridge
+ *
+ *  Copyright (c) 2007 Richard Purdie
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/input.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/tty.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/apm-emulation.h>
+
+static void system_power_event(unsigned int keycode)
+{
+       switch (keycode) {
+       case KEY_SUSPEND:
+               apm_queue_event(APM_USER_SUSPEND);
+               pr_info("Requesting system suspend...\n");
+               break;
+       default:
+               break;
+       }
+}
+
+static void apmpower_event(struct input_handle *handle, unsigned int type,
+                          unsigned int code, int value)
+{
+       /* only react on key down events */
+       if (value != 1)
+               return;
+
+       switch (type) {
+       case EV_PWR:
+               system_power_event(code);
+               break;
+
+       default:
+               break;
+       }
+}
+
+static int apmpower_connect(struct input_handler *handler,
+                                         struct input_dev *dev,
+                                         const struct input_device_id *id)
+{
+       struct input_handle *handle;
+       int error;
+
+       handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
+       if (!handle)
+               return -ENOMEM;
+
+       handle->dev = dev;
+       handle->handler = handler;
+       handle->name = "apm-power";
+
+       error = input_register_handle(handle);
+       if (error) {
+               pr_err("Failed to register input power handler, error %d\n",
+                      error);
+               kfree(handle);
+               return error;
+       }
+
+       error = input_open_device(handle);
+       if (error) {
+               pr_err("Failed to open input power device, error %d\n", error);
+               input_unregister_handle(handle);
+               kfree(handle);
+               return error;
+       }
+
+       return 0;
+}
+
+static void apmpower_disconnect(struct input_handle *handle)
+{
+       input_close_device(handle);
+       input_unregister_handle(handle);
+       kfree(handle);
+}
+
+static const struct input_device_id apmpower_ids[] = {
+       {
+               .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
+               .evbit = { BIT_MASK(EV_PWR) },
+       },
+       { },
+};
+
+MODULE_DEVICE_TABLE(input, apmpower_ids);
+
+static struct input_handler apmpower_handler = {
+       .event =        apmpower_event,
+       .connect =      apmpower_connect,
+       .disconnect =   apmpower_disconnect,
+       .name =         "apm-power",
+       .id_table =     apmpower_ids,
+};
+
+static int __init apmpower_init(void)
+{
+       return input_register_handler(&apmpower_handler);
+}
+
+static void __exit apmpower_exit(void)
+{
+       input_unregister_handler(&apmpower_handler);
+}
+
+module_init(apmpower_init);
+module_exit(apmpower_exit);
+
+MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>");
+MODULE_DESCRIPTION("Input Power Event -> APM Bridge");
+MODULE_LICENSE("GPL");