/* * 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. * */ #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); printk(KERN_INFO "apm-power: 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"; handler->private = handle; error = input_register_handle(handle); if (error) { printk(KERN_ERR "apm-power: Failed to register input power handler, " "error %d\n", error); kfree(handle); return error; } error = input_open_device(handle); if (error) { printk(KERN_ERR "apm-power: 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 *handler) { struct input_handle *handle = handler->private; input_close_device(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");