1 files changed, 0 insertions, 451 deletions
diff --git a/ANDROID_3.4.5/drivers/hid/hid-roccat.c b/ANDROID_3.4.5/drivers/hid/hid-roccat.c
deleted file mode 100644
index b685b04d..00000000
--- a/ANDROID_3.4.5/drivers/hid/hid-roccat.c
+++ /dev/null
@@ -1,451 +0,0 @@
-/*
- * Roccat driver for Linux
- *
- * Copyright (c) 2010 Stefan Achatz <erazor_de@users.sourceforge.net>
- */
-
-/*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- */
-
-/*
- * Module roccat is a char device used to report special events of roccat
- * hardware to userland. These events include requests for on-screen-display of
- * profile or dpi settings or requests for execution of macro sequences that are
- * not stored in device. The information in these events depends on hid device
- * implementation and contains data that is not available in a single hid event
- * or else hidraw could have been used.
- * It is inspired by hidraw, but uses only one circular buffer for all readers.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/cdev.h>
-#include <linux/poll.h>
-#include <linux/sched.h>
-#include <linux/hid-roccat.h>
-#include <linux/module.h>
-
-#define ROCCAT_FIRST_MINOR 0
-#define ROCCAT_MAX_DEVICES 8
-
-/* should be a power of 2 for performance reason */
-#define ROCCAT_CBUF_SIZE 16
-
-struct roccat_report {
-	uint8_t *value;
-};
-
-struct roccat_device {
-	unsigned int minor;
-	int report_size;
-	int open;
-	int exist;
-	wait_queue_head_t wait;
-	struct device *dev;
-	struct hid_device *hid;
-	struct list_head readers;
-	/* protects modifications of readers list */
-	struct mutex readers_lock;
-
-	/*
-	 * circular_buffer has one writer and multiple readers with their own
-	 * read pointers
-	 */
-	struct roccat_report cbuf[ROCCAT_CBUF_SIZE];
-	int cbuf_end;
-	struct mutex cbuf_lock;
-};
-
-struct roccat_reader {
-	struct list_head node;
-	struct roccat_device *device;
-	int cbuf_start;
-};
-
-static int roccat_major;
-static struct cdev roccat_cdev;
-
-static struct roccat_device *devices[ROCCAT_MAX_DEVICES];
-/* protects modifications of devices array */
-static DEFINE_MUTEX(devices_lock);
-
-static ssize_t roccat_read(struct file *file, char __user *buffer,
-		size_t count, loff_t *ppos)
-{
-	struct roccat_reader *reader = file->private_data;
-	struct roccat_device *device = reader->device;
-	struct roccat_report *report;
-	ssize_t retval = 0, len;
-	DECLARE_WAITQUEUE(wait, current);
-
-	mutex_lock(&device->cbuf_lock);
-
-	/* no data? */
-	if (reader->cbuf_start == device->cbuf_end) {
-		add_wait_queue(&device->wait, &wait);
-		set_current_state(TASK_INTERRUPTIBLE);
-
-		/* wait for data */
-		while (reader->cbuf_start == device->cbuf_end) {
-			if (file->f_flags & O_NONBLOCK) {
-				retval = -EAGAIN;
-				break;
-			}
-			if (signal_pending(current)) {
-				retval = -ERESTARTSYS;
-				break;
-			}
-			if (!device->exist) {
-				retval = -EIO;
-				break;
-			}
-
-			mutex_unlock(&device->cbuf_lock);
-			schedule();
-			mutex_lock(&device->cbuf_lock);
-			set_current_state(TASK_INTERRUPTIBLE);
-		}
-
-		set_current_state(TASK_RUNNING);
-		remove_wait_queue(&device->wait, &wait);
-	}
-
-	/* here we either have data or a reason to return if retval is set */
-	if (retval)
-		goto exit_unlock;
-
-	report = &device->cbuf[reader->cbuf_start];
-	/*
-	 * If report is larger than requested amount of data, rest of report
-	 * is lost!
-	 */
-	len = device->report_size > count ? count : device->report_size;
-
-	if (copy_to_user(buffer, report->value, len)) {
-		retval = -EFAULT;
-		goto exit_unlock;
-	}
-	retval += len;
-	reader->cbuf_start = (reader->cbuf_start + 1) % ROCCAT_CBUF_SIZE;
-
-exit_unlock:
-	mutex_unlock(&device->cbuf_lock);
-	return retval;
-}
-
-static unsigned int roccat_poll(struct file *file, poll_table *wait)
-{
-	struct roccat_reader *reader = file->private_data;
-	poll_wait(file, &reader->device->wait, wait);
-	if (reader->cbuf_start != reader->device->cbuf_end)
-		return POLLIN | POLLRDNORM;
-	if (!reader->device->exist)
-		return POLLERR | POLLHUP;
-	return 0;
-}
-
-static int roccat_open(struct inode *inode, struct file *file)
-{
-	unsigned int minor = iminor(inode);
-	struct roccat_reader *reader;
-	struct roccat_device *device;
-	int error = 0;
-
-	reader = kzalloc(sizeof(struct roccat_reader), GFP_KERNEL);
-	if (!reader)
-		return -ENOMEM;
-
-	mutex_lock(&devices_lock);
-
-	device = devices[minor];
-
-	if (!device) {
-		pr_emerg("roccat device with minor %d doesn't exist\n", minor);
-		error = -ENODEV;
-		goto exit_err_devices;
-	}
-
-	mutex_lock(&device->readers_lock);
-
-	if (!device->open++) {
-		/* power on device on adding first reader */
-		error = hid_hw_power(device->hid, PM_HINT_FULLON);
-		if (error < 0) {
-			--device->open;
-			goto exit_err_readers;
-		}
-
-		error = hid_hw_open(device->hid);
-		if (error < 0) {
-			hid_hw_power(device->hid, PM_HINT_NORMAL);
-			--device->open;
-			goto exit_err_readers;
-		}
-	}
-
-	reader->device = device;
-	/* new reader doesn't get old events */
-	reader->cbuf_start = device->cbuf_end;
-
-	list_add_tail(&reader->node, &device->readers);
-	file->private_data = reader;
-
-exit_err_readers:
-	mutex_unlock(&device->readers_lock);
-exit_err_devices:
-	mutex_unlock(&devices_lock);
-	if (error)
-		kfree(reader);
-	return error;
-}
-
-static int roccat_release(struct inode *inode, struct file *file)
-{
-	unsigned int minor = iminor(inode);
-	struct roccat_reader *reader = file->private_data;
-	struct roccat_device *device;
-
-	mutex_lock(&devices_lock);
-
-	device = devices[minor];
-	if (!device) {
-		mutex_unlock(&devices_lock);
-		pr_emerg("roccat device with minor %d doesn't exist\n", minor);
-		return -ENODEV;
-	}
-
-	mutex_lock(&device->readers_lock);
-	list_del(&reader->node);
-	mutex_unlock(&device->readers_lock);
-	kfree(reader);
-
-	if (!--device->open) {
-		/* removing last reader */
-		if (device->exist) {
-			hid_hw_power(device->hid, PM_HINT_NORMAL);
-			hid_hw_close(device->hid);
-		} else {
-			kfree(device);
-		}
-	}
-
-	mutex_unlock(&devices_lock);
-
-	return 0;
-}
-
-/*
- * roccat_report_event() - output data to readers
- * @minor: minor device number returned by roccat_connect()
- * @data: pointer to data
- * @len: size of data
- *
- * Return value is zero on success, a negative error code on failure.
- *
- * This is called from interrupt handler.
- */
-int roccat_report_event(int minor, u8 const *data)
-{
-	struct roccat_device *device;
-	struct roccat_reader *reader;
-	struct roccat_report *report;
-	uint8_t *new_value;
-
-	device = devices[minor];
-
-	new_value = kmemdup(data, device->report_size, GFP_ATOMIC);
-	if (!new_value)
-		return -ENOMEM;
-
-	report = &device->cbuf[device->cbuf_end];
-
-	/* passing NULL is safe */
-	kfree(report->value);
-
-	report->value = new_value;
-	device->cbuf_end = (device->cbuf_end + 1) % ROCCAT_CBUF_SIZE;
-
-	list_for_each_entry(reader, &device->readers, node) {
-		/*
-		 * As we already inserted one element, the buffer can't be
-		 * empty. If start and end are equal, buffer is full and we
-		 * increase start, so that slow reader misses one event, but
-		 * gets the newer ones in the right order.
-		 */
-		if (reader->cbuf_start == device->cbuf_end)
-			reader->cbuf_start = (reader->cbuf_start + 1) % ROCCAT_CBUF_SIZE;
-	}
-
-	wake_up_interruptible(&device->wait);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(roccat_report_event);
-
-/*
- * roccat_connect() - create a char device for special event output
- * @class: the class thats used to create the device. Meant to hold device
- * specific sysfs attributes.
- * @hid: the hid device the char device should be connected to.
- *
- * Return value is minor device number in Range [0, ROCCAT_MAX_DEVICES] on
- * success, a negative error code on failure.
- */
-int roccat_connect(struct class *klass, struct hid_device *hid, int report_size)
-{
-	unsigned int minor;
-	struct roccat_device *device;
-	int temp;
-
-	device = kzalloc(sizeof(struct roccat_device), GFP_KERNEL);
-	if (!device)
-		return -ENOMEM;
-
-	mutex_lock(&devices_lock);
-
-	for (minor = 0; minor < ROCCAT_MAX_DEVICES; ++minor) {
-		if (devices[minor])
-			continue;
-		break;
-	}
-
-	if (minor < ROCCAT_MAX_DEVICES) {
-		devices[minor] = device;
-	} else {
-		mutex_unlock(&devices_lock);
-		kfree(device);
-		return -EINVAL;
-	}
-
-	device->dev = device_create(klass, &hid->dev,
-			MKDEV(roccat_major, minor), NULL,
-			"%s%s%d", "roccat", hid->driver->name, minor);
-
-	if (IS_ERR(device->dev)) {
-		devices[minor] = NULL;
-		mutex_unlock(&devices_lock);
-		temp = PTR_ERR(device->dev);
-		kfree(device);
-		return temp;
-	}
-
-	mutex_unlock(&devices_lock);
-
-	init_waitqueue_head(&device->wait);
-	INIT_LIST_HEAD(&device->readers);
-	mutex_init(&device->readers_lock);
-	mutex_init(&device->cbuf_lock);
-	device->minor = minor;
-	device->hid = hid;
-	device->exist = 1;
-	device->cbuf_end = 0;
-	device->report_size = report_size;
-
-	return minor;
-}
-EXPORT_SYMBOL_GPL(roccat_connect);
-
-/* roccat_disconnect() - remove char device from hid device
- * @minor: the minor device number returned by roccat_connect()
- */
-void roccat_disconnect(int minor)
-{
-	struct roccat_device *device;
-
-	mutex_lock(&devices_lock);
-	device = devices[minor];
-	mutex_unlock(&devices_lock);
-
-	device->exist = 0; /* TODO exist maybe not needed */
-
-	device_destroy(device->dev->class, MKDEV(roccat_major, minor));
-
-	mutex_lock(&devices_lock);
-	devices[minor] = NULL;
-	mutex_unlock(&devices_lock);
-	
-	if (device->open) {
-		hid_hw_close(device->hid);
-		wake_up_interruptible(&device->wait);
-	} else {
-		kfree(device);
-	}
-}
-EXPORT_SYMBOL_GPL(roccat_disconnect);
-
-static long roccat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
-	struct inode *inode = file->f_path.dentry->d_inode;
-	struct roccat_device *device;
-	unsigned int minor = iminor(inode);
-	long retval = 0;
-
-	mutex_lock(&devices_lock);
-
-	device = devices[minor];
-	if (!device) {
-		retval = -ENODEV;
-		goto out;
-	}
-
-	switch (cmd) {
-	case ROCCATIOCGREPSIZE:
-		if (put_user(device->report_size, (int __user *)arg))
-			retval = -EFAULT;
-		break;
-	default:
-		retval = -ENOTTY;
-	}
-out:
-	mutex_unlock(&devices_lock);
-	return retval;
-}
-
-static const struct file_operations roccat_ops = {
-	.owner = THIS_MODULE,
-	.read = roccat_read,
-	.poll = roccat_poll,
-	.open = roccat_open,
-	.release = roccat_release,
-	.llseek = noop_llseek,
-	.unlocked_ioctl = roccat_ioctl,
-};
-
-static int __init roccat_init(void)
-{
-	int retval;
-	dev_t dev_id;
-
-	retval = alloc_chrdev_region(&dev_id, ROCCAT_FIRST_MINOR,
-			ROCCAT_MAX_DEVICES, "roccat");
-
-	roccat_major = MAJOR(dev_id);
-
-	if (retval < 0) {
-		pr_warn("can't get major number\n");
-		return retval;
-	}
-
-	cdev_init(&roccat_cdev, &roccat_ops);
-	cdev_add(&roccat_cdev, dev_id, ROCCAT_MAX_DEVICES);
-
-	return 0;
-}
-
-static void __exit roccat_exit(void)
-{
-	dev_t dev_id = MKDEV(roccat_major, 0);
-
-	cdev_del(&roccat_cdev);
-	unregister_chrdev_region(dev_id, ROCCAT_MAX_DEVICES);
-}
-
-module_init(roccat_init);
-module_exit(roccat_exit);
-
-MODULE_AUTHOR("Stefan Achatz");
-MODULE_DESCRIPTION("USB Roccat char device");
-MODULE_LICENSE("GPL v2");