diff options
Diffstat (limited to 'drivers/input')
94 files changed, 2552 insertions, 2195 deletions
diff --git a/drivers/input/Kconfig b/drivers/input/Kconfig index 1efd3154b68d..ec0e861f185f 100644 --- a/drivers/input/Kconfig +++ b/drivers/input/Kconfig @@ -52,19 +52,6 @@ config INPUT_FF_MEMLESS To compile this driver as a module, choose M here: the module will be called ff-memless. -config INPUT_POLLDEV - tristate "Polled input device skeleton" - help - Say Y here if you are using a driver for an input - device that periodically polls hardware state. This - option is only useful for out-of-tree drivers since - in-tree drivers select it automatically. - - If unsure, say N. - - To compile this driver as a module, choose M here: the - module will be called input-polldev. - config INPUT_SPARSEKMAP tristate "Sparse keymap support library" help diff --git a/drivers/input/Makefile b/drivers/input/Makefile index e35650930371..d8f5310e22ba 100644 --- a/drivers/input/Makefile +++ b/drivers/input/Makefile @@ -9,7 +9,6 @@ obj-$(CONFIG_INPUT) += input-core.o input-core-y := input.o input-compat.o input-mt.o input-poller.o ff-core.o obj-$(CONFIG_INPUT_FF_MEMLESS) += ff-memless.o -obj-$(CONFIG_INPUT_POLLDEV) += input-polldev.o obj-$(CONFIG_INPUT_SPARSEKMAP) += sparse-keymap.o obj-$(CONFIG_INPUT_MATRIXKMAP) += matrix-keymap.o diff --git a/drivers/input/input-polldev.c b/drivers/input/input-polldev.c deleted file mode 100644 index 9bf1c9aeb4c4..000000000000 --- a/drivers/input/input-polldev.c +++ /dev/null @@ -1,362 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Generic implementation of a polled input device - - * Copyright (c) 2007 Dmitry Torokhov - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/jiffies.h> -#include <linux/slab.h> -#include <linux/mutex.h> -#include <linux/workqueue.h> -#include <linux/module.h> -#include <linux/input-polldev.h> - -MODULE_AUTHOR("Dmitry Torokhov <dtor@mail.ru>"); -MODULE_DESCRIPTION("Generic implementation of a polled input device"); -MODULE_LICENSE("GPL v2"); - -static void input_polldev_queue_work(struct input_polled_dev *dev) -{ - unsigned long delay; - - delay = msecs_to_jiffies(dev->poll_interval); - if (delay >= HZ) - delay = round_jiffies_relative(delay); - - queue_delayed_work(system_freezable_wq, &dev->work, delay); -} - -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); - input_polldev_queue_work(dev); -} - -static int input_open_polled_device(struct input_dev *input) -{ - struct input_polled_dev *dev = input_get_drvdata(input); - - if (dev->open) - dev->open(dev); - - /* Only start polling if polling is enabled */ - if (dev->poll_interval > 0) { - dev->poll(dev); - input_polldev_queue_work(dev); - } - - return 0; -} - -static void input_close_polled_device(struct input_dev *input) -{ - struct input_polled_dev *dev = input_get_drvdata(input); - - cancel_delayed_work_sync(&dev->work); - - if (dev->close) - dev->close(dev); -} - -/* SYSFS interface */ - -static ssize_t input_polldev_get_poll(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct input_polled_dev *polldev = dev_get_drvdata(dev); - - return sprintf(buf, "%d\n", polldev->poll_interval); -} - -static ssize_t input_polldev_set_poll(struct device *dev, - struct device_attribute *attr, const char *buf, - size_t count) -{ - struct input_polled_dev *polldev = dev_get_drvdata(dev); - struct input_dev *input = polldev->input; - unsigned int interval; - int err; - - err = kstrtouint(buf, 0, &interval); - if (err) - return err; - - if (interval < polldev->poll_interval_min) - return -EINVAL; - - if (interval > polldev->poll_interval_max) - return -EINVAL; - - mutex_lock(&input->mutex); - - polldev->poll_interval = interval; - - if (input->users) { - cancel_delayed_work_sync(&polldev->work); - if (polldev->poll_interval > 0) - input_polldev_queue_work(polldev); - } - - mutex_unlock(&input->mutex); - - return count; -} - -static DEVICE_ATTR(poll, S_IRUGO | S_IWUSR, input_polldev_get_poll, - input_polldev_set_poll); - - -static ssize_t input_polldev_get_max(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct input_polled_dev *polldev = dev_get_drvdata(dev); - - return sprintf(buf, "%d\n", polldev->poll_interval_max); -} - -static DEVICE_ATTR(max, S_IRUGO, input_polldev_get_max, NULL); - -static ssize_t input_polldev_get_min(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct input_polled_dev *polldev = dev_get_drvdata(dev); - - return sprintf(buf, "%d\n", polldev->poll_interval_min); -} - -static DEVICE_ATTR(min, S_IRUGO, input_polldev_get_min, NULL); - -static struct attribute *sysfs_attrs[] = { - &dev_attr_poll.attr, - &dev_attr_max.attr, - &dev_attr_min.attr, - NULL -}; - -static struct attribute_group input_polldev_attribute_group = { - .attrs = sysfs_attrs -}; - -static const struct attribute_group *input_polldev_attribute_groups[] = { - &input_polldev_attribute_group, - NULL -}; - -/** - * input_allocate_polled_device - allocate memory for 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); - -struct input_polled_devres { - struct input_polled_dev *polldev; -}; - -static int devm_input_polldev_match(struct device *dev, void *res, void *data) -{ - struct input_polled_devres *devres = res; - - return devres->polldev == data; -} - -static void devm_input_polldev_release(struct device *dev, void *res) -{ - struct input_polled_devres *devres = res; - struct input_polled_dev *polldev = devres->polldev; - - dev_dbg(dev, "%s: dropping reference/freeing %s\n", - __func__, dev_name(&polldev->input->dev)); - - input_put_device(polldev->input); - kfree(polldev); -} - -static void devm_input_polldev_unregister(struct device *dev, void *res) -{ - struct input_polled_devres *devres = res; - struct input_polled_dev *polldev = devres->polldev; - - dev_dbg(dev, "%s: unregistering device %s\n", - __func__, dev_name(&polldev->input->dev)); - input_unregister_device(polldev->input); - - /* - * Note that we are still holding extra reference to the input - * device so it will stick around until devm_input_polldev_release() - * is called. - */ -} - -/** - * devm_input_allocate_polled_device - allocate managed polled device - * @dev: device owning the polled device being created - * - * Returns prepared &struct input_polled_dev or %NULL. - * - * Managed polled input devices do not need to be explicitly unregistered - * or freed as it will be done automatically when owner device unbinds - * from * its driver (or binding fails). Once such managed polled device - * is allocated, it is ready to be set up and registered in the same - * fashion as regular polled input devices (using - * input_register_polled_device() function). - * - * If you want to manually unregister and free such managed polled devices, - * it can be still done by calling input_unregister_polled_device() and - * input_free_polled_device(), although it is rarely needed. - * - * NOTE: the owner device is set up as parent of input device and users - * should not override it. - */ -struct input_poll |