diff options
Diffstat (limited to 'net/rfkill/rfkill-input.c')
| -rw-r--r-- | net/rfkill/rfkill-input.c | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/net/rfkill/rfkill-input.c b/net/rfkill/rfkill-input.c deleted file mode 100644 index e4b051dbed6..00000000000 --- a/net/rfkill/rfkill-input.c +++ /dev/null @@ -1,194 +0,0 @@ -/* - * Input layer to RF Kill interface connector - * - * Copyright (c) 2007 Dmitry Torokhov - */ - -/* - * 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/workqueue.h> -#include <linux/init.h> -#include <linux/rfkill.h> - -#include "rfkill-input.h" - -MODULE_AUTHOR("Dmitry Torokhov <dtor@mail.ru>"); -MODULE_DESCRIPTION("Input layer to RF switch connector"); -MODULE_LICENSE("GPL"); - -struct rfkill_task { - struct work_struct work; - enum rfkill_type type; - struct mutex mutex; /* ensures that task is serialized */ - spinlock_t lock; /* for accessing last and desired state */ - unsigned long last; /* last schedule */ - enum rfkill_state desired_state; /* on/off */ - enum rfkill_state current_state; /* on/off */ -}; - -static void rfkill_task_handler(struct work_struct *work) -{ - struct rfkill_task *task = container_of(work, struct rfkill_task, work); - enum rfkill_state state; - - mutex_lock(&task->mutex); - - /* - * Use temp variable to fetch desired state to keep it - * consistent even if rfkill_schedule_toggle() runs in - * another thread or interrupts us. - */ - state = task->desired_state; - - if (state != task->current_state) { - rfkill_switch_all(task->type, state); - task->current_state = state; - } - - mutex_unlock(&task->mutex); -} - -static void rfkill_schedule_toggle(struct rfkill_task *task) -{ - unsigned long flags; - - spin_lock_irqsave(&task->lock, flags); - - if (time_after(jiffies, task->last + msecs_to_jiffies(200))) { - task->desired_state = !task->desired_state; - task->last = jiffies; - schedule_work(&task->work); - } - - spin_unlock_irqrestore(&task->lock, flags); -} - -#define DEFINE_RFKILL_TASK(n, t) \ - struct rfkill_task n = { \ - .work = __WORK_INITIALIZER(n.work, \ - rfkill_task_handler), \ - .type = t, \ - .mutex = __MUTEX_INITIALIZER(n.mutex), \ - .lock = __SPIN_LOCK_UNLOCKED(n.lock), \ - .desired_state = RFKILL_STATE_ON, \ - .current_state = RFKILL_STATE_ON, \ - } - -static DEFINE_RFKILL_TASK(rfkill_wlan, RFKILL_TYPE_WLAN); -static DEFINE_RFKILL_TASK(rfkill_bt, RFKILL_TYPE_BLUETOOTH); -static DEFINE_RFKILL_TASK(rfkill_uwb, RFKILL_TYPE_UWB); -static DEFINE_RFKILL_TASK(rfkill_wimax, RFKILL_TYPE_WIMAX); - -static void rfkill_event(struct input_handle *handle, unsigned int type, - unsigned int code, int down) -{ - if (type == EV_KEY && down == 1) { - switch (code) { - case KEY_WLAN: - rfkill_schedule_toggle(&rfkill_wlan); - break; - case KEY_BLUETOOTH: - rfkill_schedule_toggle(&rfkill_bt); - break; - case KEY_UWB: - rfkill_schedule_toggle(&rfkill_uwb); - break; - case KEY_WIMAX: - rfkill_schedule_toggle(&rfkill_wimax); - break; - default: - break; - } - } -} - -static int rfkill_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 = "rfkill"; - - error = input_register_handle(handle); - if (error) - goto err_free_handle; - - error = input_open_device(handle); - if (error) - goto err_unregister_handle; - - return 0; - - err_unregister_handle: - input_unregister_handle(handle); - err_free_handle: - kfree(handle); - return error; -} - -static void rfkill_disconnect(struct input_handle *handle) -{ - input_close_device(handle); - input_unregister_handle(handle); - kfree(handle); -} - -static const struct input_device_id rfkill_ids[] = { - { - .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT, - .evbit = { BIT_MASK(EV_KEY) }, - .keybit = { [BIT_WORD(KEY_WLAN)] = BIT_MASK(KEY_WLAN) }, - }, - { - .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT, - .evbit = { BIT_MASK(EV_KEY) }, - .keybit = { [BIT_WORD(KEY_BLUETOOTH)] = BIT_MASK(KEY_BLUETOOTH) }, - }, - { - .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT, - .evbit = { BIT_MASK(EV_KEY) }, - .keybit = { [BIT_WORD(KEY_UWB)] = BIT_MASK(KEY_UWB) }, - }, - { - .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT, - .evbit = { BIT_MASK(EV_KEY) }, - .keybit = { [BIT_WORD(KEY_WIMAX)] = BIT_MASK(KEY_WIMAX) }, - }, - { } -}; - -static struct input_handler rfkill_handler = { - .event = rfkill_event, - .connect = rfkill_connect, - .disconnect = rfkill_disconnect, - .name = "rfkill", - .id_table = rfkill_ids, -}; - -static int __init rfkill_handler_init(void) -{ - return input_register_handler(&rfkill_handler); -} - -static void __exit rfkill_handler_exit(void) -{ - input_unregister_handler(&rfkill_handler); - flush_scheduled_work(); -} - -module_init(rfkill_handler_init); -module_exit(rfkill_handler_exit); |