From 893e7c2db05f14032f2390ef7c59a499fc25ccae Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Wed, 13 Jun 2007 01:49:58 -0400 Subject: Input: move input-polldev to drivers/input To work around deficiences in Kconfig that allows to "select" a symbol without automatically selecting all dependencies for that symbol move input-polldev from drivers/input/misc to drivers/input thus removing extra dependency on CONFIG_INPUT_MISC. Signed-off-by: Dmitry Torokhov --- drivers/input/misc/input-polldev.c | 176 ------------------------------------- 1 file changed, 176 deletions(-) delete mode 100644 drivers/input/misc/input-polldev.c (limited to 'drivers/input/misc/input-polldev.c') diff --git a/drivers/input/misc/input-polldev.c b/drivers/input/misc/input-polldev.c deleted file mode 100644 index b773d4c756a6..000000000000 --- a/drivers/input/misc/input-polldev.c +++ /dev/null @@ -1,176 +0,0 @@ -/* - * Generic implementation of a polled input device - - * 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 -#include -#include - -MODULE_AUTHOR("Dmitry Torokhov "); -MODULE_DESCRIPTION("Generic implementation of a polled input device"); -MODULE_LICENSE("GPL v2"); -MODULE_VERSION("0.1"); - -static DEFINE_MUTEX(polldev_mutex); -static int polldev_users; -static struct workqueue_struct *polldev_wq; - -static int input_polldev_start_workqueue(void) -{ - int retval; - - retval = mutex_lock_interruptible(&polldev_mutex); - if (retval) - return retval; - - if (!polldev_users) { - polldev_wq = create_singlethread_workqueue("ipolldevd"); - if (!polldev_wq) { - printk(KERN_ERR "input-polldev: failed to create " - "ipolldevd workqueue\n"); - retval = -ENOMEM; - goto out; - } - } - - polldev_users++; - - out: - mutex_unlock(&polldev_mutex); - return retval; -} - -static void input_polldev_stop_workqueue(void) -{ - mutex_lock(&polldev_mutex); - - if (!--polldev_users) - destroy_workqueue(polldev_wq); - - mutex_unlock(&polldev_mutex); -} - -static void input_polled_device_work(struct work_struct *work) -{ - struct input_polled_dev *dev = - container_of(work, struct input_polled_dev, work.work); - - dev->poll(dev); - queue_delayed_work(polldev_wq, &dev->work, - msecs_to_jiffies(dev->poll_interval)); -} - -static int input_open_polled_device(struct input_dev *input) -{ - struct input_polled_dev *dev = input->private; - int error; - - error = input_polldev_start_workqueue(); - if (error) - return error; - - if (dev->flush) - dev->flush(dev); - - queue_delayed_work(polldev_wq, &dev->work, - msecs_to_jiffies(dev->poll_interval)); - - return 0; -} - -static void input_close_polled_device(struct input_dev *input) -{ - struct input_polled_dev *dev = input->private; - - cancel_rearming_delayed_workqueue(polldev_wq, &dev->work); - input_polldev_stop_workqueue(); -} - -/** - * input_allocate_polled_device - allocated memory polled device - * - * The function allocates memory for a polled device and also - * for an input device associated with this polled device. - */ -struct input_polled_dev *input_allocate_polled_device(void) -{ - struct input_polled_dev *dev; - - dev = kzalloc(sizeof(struct input_polled_dev), GFP_KERNEL); - if (!dev) - return NULL; - - dev->input = input_allocate_device(); - if (!dev->input) { - kfree(dev); - return NULL; - } - - return dev; -} -EXPORT_SYMBOL(input_allocate_polled_device); - -/** - * input_free_polled_device - free memory allocated for polled device - * @dev: device to free - * - * The function frees memory allocated for polling device and drops - * reference to the associated input device (if present). - */ -void input_free_polled_device(struct input_polled_dev *dev) -{ - if (dev) { - input_free_device(dev->input); - kfree(dev); - } -} -EXPORT_SYMBOL(input_free_polled_device); - -/** - * input_register_polled_device - register polled device - * @dev: device to register - * - * The function registers previously initialized polled input device - * with input layer. The device should be allocated with call to - * input_allocate_polled_device(). Callers should also set up poll() - * method and set up capabilities (id, name, phys, bits) of the - * corresponing input_dev structure. - */ -int input_register_polled_device(struct input_polled_dev *dev) -{ - struct input_dev *input = dev->input; - - INIT_DELAYED_WORK(&dev->work, input_polled_device_work); - if (!dev->poll_interval) - dev->poll_interval = 500; - input->private = dev; - input->open = input_open_polled_device; - input->close = input_close_polled_device; - - return input_register_device(input); -} -EXPORT_SYMBOL(input_register_polled_device); - -/** - * input_unregister_polled_device - unregister polled device - * @dev: device to unregister - * - * The function unregisters previously registered polled input - * device from input layer. Polling is stopped and device is - * ready to be freed with call to input_free_polled_device(). - * Callers should not attempt to access dev->input pointer - * after calling this function. - */ -void input_unregister_polled_device(struct input_polled_dev *dev) -{ - input_unregister_device(dev->input); - dev->input = NULL; -} -EXPORT_SYMBOL(input_unregister_polled_device); - -- cgit v1.2.2