[mirror_ubuntu-artful-kernel.git] / drivers / hid / hid-roccat-pyra.c

/*
 * Roccat Pyra 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.
 */

/*
 * Roccat Pyra is a mobile gamer mouse which comes in wired and wireless
 * variant. Wireless variant is not tested.
 * Userland tools can be found at http://sourceforge.net/projects/roccat
 */

#include <linux/device.h>
#include <linux/input.h>
#include <linux/hid.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/hid-roccat.h>
#include "hid-ids.h"
#include "hid-roccat-common.h"
#include "hid-roccat-pyra.h"

static uint profile_numbers[5] = {0, 1, 2, 3, 4};

/* pyra_class is used for creating sysfs attributes via roccat char device */
static struct class *pyra_class;

static void profile_activated(struct pyra_device *pyra,
		unsigned int new_profile)
{
	pyra->actual_profile = new_profile;
	pyra->actual_cpi = pyra->profile_settings[pyra->actual_profile].y_cpi;
}

static int pyra_send_control(struct usb_device *usb_dev, int value,
		enum pyra_control_requests request)
{
	struct roccat_common2_control control;

	if ((request == PYRA_CONTROL_REQUEST_PROFILE_SETTINGS ||
			request == PYRA_CONTROL_REQUEST_PROFILE_BUTTONS) &&
			(value < 0 || value > 4))
		return -EINVAL;

	control.command = ROCCAT_COMMON_COMMAND_CONTROL;
	control.value = value;
	control.request = request;

	return roccat_common2_send(usb_dev, ROCCAT_COMMON_COMMAND_CONTROL,
			&control, sizeof(struct roccat_common2_control));
}

static int pyra_get_profile_settings(struct usb_device *usb_dev,
		struct pyra_profile_settings *buf, int number)
{
	int retval;
	retval = pyra_send_control(usb_dev, number,
			PYRA_CONTROL_REQUEST_PROFILE_SETTINGS);
	if (retval)
		return retval;
	return roccat_common2_receive(usb_dev, PYRA_COMMAND_PROFILE_SETTINGS,
			buf, PYRA_SIZE_PROFILE_SETTINGS);
}

static int pyra_get_settings(struct usb_device *usb_dev,
		struct pyra_settings *buf)
{
	return roccat_common2_receive(usb_dev, PYRA_COMMAND_SETTINGS,
			buf, PYRA_SIZE_SETTINGS);
}

static int pyra_set_settings(struct usb_device *usb_dev,
		struct pyra_settings const *settings)
{
	return roccat_common2_send_with_status(usb_dev,
			PYRA_COMMAND_SETTINGS, settings,
			PYRA_SIZE_SETTINGS);
}

static ssize_t pyra_sysfs_read(struct file *fp, struct kobject *kobj,
		char *buf, loff_t off, size_t count,
		size_t real_size, uint command)
{
	struct device *dev =
			container_of(kobj, struct device, kobj)->parent->parent;
	struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
	int retval;

	if (off >= real_size)
		return 0;

	if (off != 0 || count != real_size)
		return -EINVAL;

	mutex_lock(&pyra->pyra_lock);
	retval = roccat_common2_receive(usb_dev, command, buf, real_size);
	mutex_unlock(&pyra->pyra_lock);

	if (retval)
		return retval;

	return real_size;
}

static ssize_t pyra_sysfs_write(struct file *fp, struct kobject *kobj,
		void const *buf, loff_t off, size_t count,
		size_t real_size, uint command)
{
	struct device *dev =
			container_of(kobj, struct device, kobj)->parent->parent;
	struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
	int retval;

	if (off != 0 || count != real_size)
		return -EINVAL;

	mutex_lock(&pyra->pyra_lock);
	retval = roccat_common2_send_with_status(usb_dev, command, (void *)buf, real_size);
	mutex_unlock(&pyra->pyra_lock);

	if (retval)
		return retval;

	return real_size;
}

#define PYRA_SYSFS_W(thingy, THINGY) \
static ssize_t pyra_sysfs_write_ ## thingy(struct file *fp, \
		struct kobject *kobj, struct bin_attribute *attr, char *buf, \
		loff_t off, size_t count) \
{ \
	return pyra_sysfs_write(fp, kobj, buf, off, count, \
			PYRA_SIZE_ ## THINGY, PYRA_COMMAND_ ## THINGY); \
}

#define PYRA_SYSFS_R(thingy, THINGY) \
static ssize_t pyra_sysfs_read_ ## thingy(struct file *fp, \
		struct kobject *kobj, struct bin_attribute *attr, char *buf, \
		loff_t off, size_t count) \
{ \
	return pyra_sysfs_read(fp, kobj, buf, off, count, \
			PYRA_SIZE_ ## THINGY, PYRA_COMMAND_ ## THINGY); \
}

#define PYRA_SYSFS_RW(thingy, THINGY) \
PYRA_SYSFS_W(thingy, THINGY) \
PYRA_SYSFS_R(thingy, THINGY)

#define PYRA_BIN_ATTRIBUTE_RW(thingy, THINGY) \
PYRA_SYSFS_RW(thingy, THINGY); \
static struct bin_attribute bin_attr_##thingy = { \
	.attr = { .name = #thingy, .mode = 0660 }, \
	.size = PYRA_SIZE_ ## THINGY, \
	.read = pyra_sysfs_read_ ## thingy, \
	.write = pyra_sysfs_write_ ## thingy \
}

#define PYRA_BIN_ATTRIBUTE_R(thingy, THINGY) \
PYRA_SYSFS_R(thingy, THINGY); \
static struct bin_attribute bin_attr_##thingy = { \
	.attr = { .name = #thingy, .mode = 0440 }, \
	.size = PYRA_SIZE_ ## THINGY, \
	.read = pyra_sysfs_read_ ## thingy, \
}

#define PYRA_BIN_ATTRIBUTE_W(thingy, THINGY) \
PYRA_SYSFS_W(thingy, THINGY); \
static struct bin_attribute bin_attr_##thingy = { \
	.attr = { .name = #thingy, .mode = 0220 }, \
	.size = PYRA_SIZE_ ## THINGY, \
	.write = pyra_sysfs_write_ ## thingy \
}

PYRA_BIN_ATTRIBUTE_W(control, CONTROL);
PYRA_BIN_ATTRIBUTE_RW(info, INFO);
PYRA_BIN_ATTRIBUTE_RW(profile_settings, PROFILE_SETTINGS);
PYRA_BIN_ATTRIBUTE_RW(profile_buttons, PROFILE_BUTTONS);

static ssize_t pyra_sysfs_read_profilex_settings(struct file *fp,
		struct kobject *kobj, struct bin_attribute *attr, char *buf,
		loff_t off, size_t count)
{
	struct device *dev =
			container_of(kobj, struct device, kobj)->parent->parent;
	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
	ssize_t retval;

	retval = pyra_send_control(usb_dev, *(uint *)(attr->private),
			PYRA_CONTROL_REQUEST_PROFILE_SETTINGS);
	if (retval)
		return retval;

	return pyra_sysfs_read(fp, kobj, buf, off, count,
			PYRA_SIZE_PROFILE_SETTINGS,
			PYRA_COMMAND_PROFILE_SETTINGS);
}

static ssize_t pyra_sysfs_read_profilex_buttons(struct file *fp,
		struct kobject *kobj, struct bin_attribute *attr, char *buf,
		loff_t off, size_t count)
{
	struct device *dev =
			container_of(kobj, struct device, kobj)->parent->parent;
	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
	ssize_t retval;

	retval = pyra_send_control(usb_dev, *(uint *)(attr->private),
			PYRA_CONTROL_REQUEST_PROFILE_BUTTONS);
	if (retval)
		return retval;

	return pyra_sysfs_read(fp, kobj, buf, off, count,
			PYRA_SIZE_PROFILE_BUTTONS,
			PYRA_COMMAND_PROFILE_BUTTONS);
}

#define PROFILE_ATTR(number)						\
static struct bin_attribute bin_attr_profile##number##_settings = {	\
	.attr = { .name = "profile##number##_settings", .mode = 0440 },	\
	.size = PYRA_SIZE_PROFILE_SETTINGS,				\
	.read = pyra_sysfs_read_profilex_settings,			\
	.private = &profile_numbers[number-1],				\
};									\
static struct bin_attribute bin_attr_profile##number##_buttons = {	\
	.attr = { .name = "profile##number##_buttons", .mode = 0440 },	\
	.size = PYRA_SIZE_PROFILE_BUTTONS,				\
	.read = pyra_sysfs_read_profilex_buttons,			\
	.private = &profile_numbers[number-1],				\
};
PROFILE_ATTR(1);
PROFILE_ATTR(2);
PROFILE_ATTR(3);
PROFILE_ATTR(4);
PROFILE_ATTR(5);

static ssize_t pyra_sysfs_write_settings(struct file *fp,
		struct kobject *kobj, struct bin_attribute *attr, char *buf,
		loff_t off, size_t count)
{
	struct device *dev =
			container_of(kobj, struct device, kobj)->parent->parent;
	struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
	int retval = 0;
	struct pyra_roccat_report roccat_report;
	struct pyra_settings const *settings;

	if (off != 0 || count != PYRA_SIZE_SETTINGS)
		return -EINVAL;

	mutex_lock(&pyra->pyra_lock);

	settings = (struct pyra_settings const *)buf;

	retval = pyra_set_settings(usb_dev, settings);
	if (retval) {
		mutex_unlock(&pyra->pyra_lock);
		return retval;
	}

	profile_activated(pyra, settings->startup_profile);

	roccat_report.type = PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2;
	roccat_report.value = settings->startup_profile + 1;
	roccat_report.key = 0;
	roccat_report_event(pyra->chrdev_minor,
			(uint8_t const *)&roccat_report);

	mutex_unlock(&pyra->pyra_lock);
	return PYRA_SIZE_SETTINGS;
}

PYRA_SYSFS_R(settings, SETTINGS);
static struct bin_attribute bin_attr_settings =
	__BIN_ATTR(settings, (S_IWUSR | S_IRUGO),
		   pyra_sysfs_read_settings, pyra_sysfs_write_settings,
		   PYRA_SIZE_SETTINGS);

static ssize_t pyra_sysfs_show_actual_cpi(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	struct pyra_device *pyra =
			hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
	return snprintf(buf, PAGE_SIZE, "%d\n", pyra->actual_cpi);
}
static DEVICE_ATTR(actual_cpi, 0440, pyra_sysfs_show_actual_cpi, NULL);

static ssize_t pyra_sysfs_show_actual_profile(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	struct pyra_device *pyra =
			hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
	struct pyra_settings settings;

	mutex_lock(&pyra->pyra_lock);
	roccat_common2_receive(usb_dev, PYRA_COMMAND_SETTINGS,
			&settings, PYRA_SIZE_SETTINGS);
	mutex_unlock(&pyra->pyra_lock);

	return snprintf(buf, PAGE_SIZE, "%d\n", settings.startup_profile);
}
static DEVICE_ATTR(actual_profile, 0440, pyra_sysfs_show_actual_profile, NULL);
static DEVICE_ATTR(startup_profile, 0440, pyra_sysfs_show_actual_profile, NULL);

static ssize_t pyra_sysfs_show_firmware_version(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	struct pyra_device *pyra;
	struct usb_device *usb_dev;
	struct pyra_info info;

	dev = dev->parent->parent;
	pyra = hid_get_drvdata(dev_get_drvdata(dev));
	usb_dev = interface_to_usbdev(to_usb_interface(dev));

	mutex_lock(&pyra->pyra_lock);
	roccat_common2_receive(usb_dev, PYRA_COMMAND_INFO,
			&info, PYRA_SIZE_INFO);
	mutex_unlock(&pyra->pyra_lock);

	return snprintf(buf, PAGE_SIZE, "%d\n", info.firmware_version);
}
static DEVICE_ATTR(firmware_version, 0440, pyra_sysfs_show_firmware_version,
		   NULL);

static struct attribute *pyra_attrs[] = {
	&dev_attr_actual_cpi.attr,
	&dev_attr_actual_profile.attr,
	&dev_attr_firmware_version.attr,
	&dev_attr_startup_profile.attr,
	NULL,
};

static struct bin_attribute *pyra_bin_attributes[] = {
	&bin_attr_control,
	&bin_attr_info,
	&bin_attr_profile_settings,
	&bin_attr_profile_buttons,
	&bin_attr_settings,
	&bin_attr_profile1_settings,
	&bin_attr_profile2_settings,
	&bin_attr_profile3_settings,
	&bin_attr_profile4_settings,
	&bin_attr_profile5_settings,
	&bin_attr_profile1_buttons,
	&bin_attr_profile2_buttons,
	&bin_attr_profile3_buttons,
	&bin_attr_profile4_buttons,
	&bin_attr_profile5_buttons,
	NULL,
};

static const struct attribute_group pyra_group = {
	.attrs = pyra_attrs,
	.bin_attrs = pyra_bin_attributes,
};

static const struct attribute_group *pyra_groups[] = {
	&pyra_group,
	NULL,
};

static int pyra_init_pyra_device_struct(struct usb_device *usb_dev,
		struct pyra_device *pyra)
{
	struct pyra_settings settings;
	int retval, i;

	mutex_init(&pyra->pyra_lock);

	retval = pyra_get_settings(usb_dev, &settings);
	if (retval)
		return retval;

	for (i = 0; i < 5; ++i) {
		retval = pyra_get_profile_settings(usb_dev,
				&pyra->profile_settings[i], i);
		if (retval)
			return retval;
	}

	profile_activated(pyra, settings.startup_profile);

	return 0;
}

static int pyra_init_specials(struct hid_device *hdev)
{
	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
	struct usb_device *usb_dev = interface_to_usbdev(intf);
	struct pyra_device *pyra;
	int retval;

	if (intf->cur_altsetting->desc.bInterfaceProtocol
			== USB_INTERFACE_PROTOCOL_MOUSE) {

		pyra = kzalloc(sizeof(*pyra), GFP_KERNEL);
		if (!pyra) {
			hid_err(hdev, "can't alloc device descriptor\n");
			return -ENOMEM;
		}
		hid_set_drvdata(hdev, pyra);

		retval = pyra_init_pyra_device_struct(usb_dev, pyra);
		if (retval) {
			hid_err(hdev, "couldn't init struct pyra_device\n");
			goto exit_free;
		}

		retval = roccat_connect(pyra_class, hdev,
				sizeof(struct pyra_roccat_report));
		if (retval < 0) {
			hid_err(hdev, "couldn't init char dev\n");
		} else {
			pyra->chrdev_minor = retval;
			pyra->roccat_claimed = 1;
		}
	} else {
		hid_set_drvdata(hdev, NULL);
	}

	return 0;
exit_free:
	kfree(pyra);
	return retval;
}

static void pyra_remove_specials(struct hid_device *hdev)
{
	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
	struct pyra_device *pyra;

	if (intf->cur_altsetting->desc.bInterfaceProtocol
			== USB_INTERFACE_PROTOCOL_MOUSE) {
		pyra = hid_get_drvdata(hdev);
		if (pyra->roccat_claimed)
			roccat_disconnect(pyra->chrdev_minor);
		kfree(hid_get_drvdata(hdev));
	}
}

static int pyra_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
	int retval;

	retval = hid_parse(hdev);
	if (retval) {
		hid_err(hdev, "parse failed\n");
		goto exit;
	}

	retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
	if (retval) {
		hid_err(hdev, "hw start failed\n");
		goto exit;
	}

	retval = pyra_init_specials(hdev);
	if (retval) {
		hid_err(hdev, "couldn't install mouse\n");
		goto exit_stop;
	}
	return 0;

exit_stop:
	hid_hw_stop(hdev);
exit:
	return retval;
}

static void pyra_remove(struct hid_device *hdev)
{
	pyra_remove_specials(hdev);
	hid_hw_stop(hdev);
}

static void pyra_keep_values_up_to_date(struct pyra_device *pyra,
		u8 const *data)
{
	struct pyra_mouse_event_button const *button_event;

	switch (data[0]) {
	case PYRA_MOUSE_REPORT_NUMBER_BUTTON:
		button_event = (struct pyra_mouse_event_button const *)data;
		switch (button_event->type) {
		case PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2:
			profile_activated(pyra, button_event->data1 - 1);
			break;
		case PYRA_MOUSE_EVENT_BUTTON_TYPE_CPI:
			pyra->actual_cpi = button_event->data1;
			break;
		}
		break;
	}
}

static void pyra_report_to_chrdev(struct pyra_device const *pyra,
		u8 const *data)
{
	struct pyra_roccat_report roccat_report;
	struct pyra_mouse_event_button const *button_event;

	if (data[0] != PYRA_MOUSE_REPORT_NUMBER_BUTTON)
		return;

	button_event = (struct pyra_mouse_event_button const *)data;

	switch (button_event->type) {
	case PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2:
	case PYRA_MOUSE_EVENT_BUTTON_TYPE_CPI:
		roccat_report.type = button_event->type;
		roccat_report.value = button_event->data1;
		roccat_report.key = 0;
		roccat_report_event(pyra->chrdev_minor,
				(uint8_t const *)&roccat_report);
		break;
	case PYRA_MOUSE_EVENT_BUTTON_TYPE_MACRO:
	case PYRA_MOUSE_EVENT_BUTTON_TYPE_SHORTCUT:
	case PYRA_MOUSE_EVENT_BUTTON_TYPE_QUICKLAUNCH:
		if (button_event->data2 == PYRA_MOUSE_EVENT_BUTTON_PRESS) {
			roccat_report.type = button_event->type;
			roccat_report.key = button_event->data1;
			/*
			 * pyra reports profile numbers with range 1-5.
			 * Keeping this behaviour.
			 */
			roccat_report.value = pyra->actual_profile + 1;
			roccat_report_event(pyra->chrdev_minor,
					(uint8_t const *)&roccat_report);
		}
		break;
	}
}

static int pyra_raw_event(struct hid_device *hdev, struct hid_report *report,
		u8 *data, int size)
{
	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
	struct pyra_device *pyra = hid_get_drvdata(hdev);

	if (intf->cur_altsetting->desc.bInterfaceProtocol
			!= USB_INTERFACE_PROTOCOL_MOUSE)
		return 0;

	if (pyra == NULL)
		return 0;

	pyra_keep_values_up_to_date(pyra, data);

	if (pyra->roccat_claimed)
		pyra_report_to_chrdev(pyra, data);

	return 0;
}

static const struct hid_device_id pyra_devices[] = {
	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT,
			USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT,
			USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
	{ }
};

MODULE_DEVICE_TABLE(hid, pyra_devices);

static struct hid_driver pyra_driver = {
		.name = "pyra",
		.id_table = pyra_devices,
		.probe = pyra_probe,
		.remove = pyra_remove,
		.raw_event = pyra_raw_event
};

static int __init pyra_init(void)
{
	int retval;

	/* class name has to be same as driver name */
	pyra_class = class_create(THIS_MODULE, "pyra");
	if (IS_ERR(pyra_class))
		return PTR_ERR(pyra_class);
	pyra_class->dev_groups = pyra_groups;

	retval = hid_register_driver(&pyra_driver);
	if (retval)
		class_destroy(pyra_class);
	return retval;
}

static void __exit pyra_exit(void)
{
	hid_unregister_driver(&pyra_driver);
	class_destroy(pyra_class);
}

module_init(pyra_init);
module_exit(pyra_exit);

MODULE_AUTHOR("Stefan Achatz");
MODULE_DESCRIPTION("USB Roccat Pyra driver");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
cb7cf3da SA	1	/*
	2	* Roccat Pyra driver for Linux
	3	*
	4	* Copyright (c) 2010 Stefan Achatz <erazor_de@users.sourceforge.net>
	5	*/
	6
	7	/*
	8	* This program is free software; you can redistribute it and/or modify it
	9	* under the terms of the GNU General Public License as published by the Free
	10	* Software Foundation; either version 2 of the License, or (at your option)
	11	* any later version.
	12	*/
	13
	14	/*
	15	* Roccat Pyra is a mobile gamer mouse which comes in wired and wireless
	16	* variant. Wireless variant is not tested.
	17	* Userland tools can be found at http://sourceforge.net/projects/roccat
	18	*/
	19
	20	#include <linux/device.h>
	21	#include <linux/input.h>
	22	#include <linux/hid.h>
cb7cf3da SA	23	#include <linux/module.h>
cb7cf3da SA	24	#include <linux/slab.h>
5dc0c983	25	#include <linux/hid-roccat.h>
cb7cf3da	26	#include "hid-ids.h"
5772f636	27	#include "hid-roccat-common.h"
cb7cf3da SA	28	#include "hid-roccat-pyra.h"
cb7cf3da SA	29
14a057f8 SA	30	static uint profile_numbers[5] = {0, 1, 2, 3, 4};
14a057f8 SA	31
5012aada SA	32	/* pyra_class is used for creating sysfs attributes via roccat char device */
	33	static struct class *pyra_class;
	34
cb7cf3da SA	35	static void profile_activated(struct pyra_device *pyra,
	36	unsigned int new_profile)
	37	{
	38	pyra->actual_profile = new_profile;
	39	pyra->actual_cpi = pyra->profile_settings[pyra->actual_profile].y_cpi;
	40	}
	41
	42	static int pyra_send_control(struct usb_device *usb_dev, int value,
	43	enum pyra_control_requests request)
	44	{
7392d73b	45	struct roccat_common2_control control;
cb7cf3da SA	46
	47	if ((request == PYRA_CONTROL_REQUEST_PROFILE_SETTINGS \|\|
	48	request == PYRA_CONTROL_REQUEST_PROFILE_BUTTONS) &&
	49	(value < 0 \|\| value > 4))
	50	return -EINVAL;
	51
4728f2dc	52	control.command = ROCCAT_COMMON_COMMAND_CONTROL;
cb7cf3da SA	53	control.value = value;
	54	control.request = request;
	55
7392d73b SA	56	return roccat_common2_send(usb_dev, ROCCAT_COMMON_COMMAND_CONTROL,
7392d73b SA	57	&control, sizeof(struct roccat_common2_control));
cb7cf3da SA	58	}
	59
	60	static int pyra_get_profile_settings(struct usb_device *usb_dev,
	61	struct pyra_profile_settings *buf, int number)
	62	{
	63	int retval;
cb7cf3da SA	64	retval = pyra_send_control(usb_dev, number,
cb7cf3da SA	65	PYRA_CONTROL_REQUEST_PROFILE_SETTINGS);
cb7cf3da SA	66	if (retval)
cb7cf3da SA	67	return retval;
7392d73b	68	return roccat_common2_receive(usb_dev, PYRA_COMMAND_PROFILE_SETTINGS,
be34380e	69	buf, PYRA_SIZE_PROFILE_SETTINGS);
cb7cf3da SA	70	}
	71
	72	static int pyra_get_settings(struct usb_device *usb_dev,
	73	struct pyra_settings *buf)
	74	{
7392d73b	75	return roccat_common2_receive(usb_dev, PYRA_COMMAND_SETTINGS,
be34380e	76	buf, PYRA_SIZE_SETTINGS);
cb7cf3da SA	77	}
	78
	79	static int pyra_set_settings(struct usb_device *usb_dev,
	80	struct pyra_settings const *settings)
	81	{
7392d73b	82	return roccat_common2_send_with_status(usb_dev,
4728f2dc	83	PYRA_COMMAND_SETTINGS, settings,
be34380e	84	PYRA_SIZE_SETTINGS);
cb7cf3da SA	85	}
cb7cf3da SA	86
be34380e SA	87	static ssize_t pyra_sysfs_read(struct file fp, struct kobject kobj,
	88	char *buf, loff_t off, size_t count,
	89	size_t real_size, uint command)
cb7cf3da	90	{
5012aada SA	91	struct device *dev =
5012aada SA	92	container_of(kobj, struct device, kobj)->parent->parent;
cb7cf3da	93	struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
be34380e SA	94	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
be34380e SA	95	int retval;
cb7cf3da	96
be34380e	97	if (off >= real_size)
cb7cf3da SA	98	return 0;
cb7cf3da SA	99
be34380e SA	100	if (off != 0 \|\| count != real_size)
be34380e SA	101	return -EINVAL;
cb7cf3da SA	102
cb7cf3da SA	103	mutex_lock(&pyra->pyra_lock);
be34380e	104	retval = roccat_common2_receive(usb_dev, command, buf, real_size);
cb7cf3da SA	105	mutex_unlock(&pyra->pyra_lock);
cb7cf3da SA	106
be34380e SA	107	if (retval)
	108	return retval;
	109
	110	return real_size;
cb7cf3da SA	111	}
cb7cf3da SA	112
be34380e SA	113	static ssize_t pyra_sysfs_write(struct file fp, struct kobject kobj,
	114	void const *buf, loff_t off, size_t count,
	115	size_t real_size, uint command)
cb7cf3da	116	{
5012aada SA	117	struct device *dev =
5012aada SA	118	container_of(kobj, struct device, kobj)->parent->parent;
cb7cf3da	119	struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
be34380e SA	120	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
be34380e SA	121	int retval;
cb7cf3da	122
be34380e SA	123	if (off != 0 \|\| count != real_size)
be34380e SA	124	return -EINVAL;
cb7cf3da SA	125
cb7cf3da SA	126	mutex_lock(&pyra->pyra_lock);
be34380e	127	retval = roccat_common2_send_with_status(usb_dev, command, (void *)buf, real_size);
cb7cf3da SA	128	mutex_unlock(&pyra->pyra_lock);
cb7cf3da SA	129
be34380e SA	130	if (retval)
	131	return retval;
	132
	133	return real_size;
cb7cf3da SA	134	}
cb7cf3da SA	135
be34380e SA	136	#define PYRA_SYSFS_W(thingy, THINGY) \
	137	static ssize_t pyra_sysfs_write_ ## thingy(struct file *fp, \
	138	struct kobject kobj, struct bin_attribute attr, char *buf, \
	139	loff_t off, size_t count) \
	140	{ \
	141	return pyra_sysfs_write(fp, kobj, buf, off, count, \
	142	PYRA_SIZE_ ## THINGY, PYRA_COMMAND_ ## THINGY); \
	143	}
cb7cf3da	144
be34380e SA	145	#define PYRA_SYSFS_R(thingy, THINGY) \
	146	static ssize_t pyra_sysfs_read_ ## thingy(struct file *fp, \
	147	struct kobject kobj, struct bin_attribute attr, char *buf, \
	148	loff_t off, size_t count) \
	149	{ \
	150	return pyra_sysfs_read(fp, kobj, buf, off, count, \
	151	PYRA_SIZE_ ## THINGY, PYRA_COMMAND_ ## THINGY); \
	152	}
cb7cf3da	153
be34380e SA	154	#define PYRA_SYSFS_RW(thingy, THINGY) \
	155	PYRA_SYSFS_W(thingy, THINGY) \
	156	PYRA_SYSFS_R(thingy, THINGY)
cb7cf3da	157
be34380e	158	#define PYRA_BIN_ATTRIBUTE_RW(thingy, THINGY) \
a7492451 GKH	159	PYRA_SYSFS_RW(thingy, THINGY); \
a7492451 GKH	160	static struct bin_attribute bin_attr_##thingy = { \
be34380e SA	161	.attr = { .name = #thingy, .mode = 0660 }, \
	162	.size = PYRA_SIZE_ ## THINGY, \
	163	.read = pyra_sysfs_read_ ## thingy, \
	164	.write = pyra_sysfs_write_ ## thingy \
	165	}
cb7cf3da	166
be34380e	167	#define PYRA_BIN_ATTRIBUTE_R(thingy, THINGY) \
a7492451 GKH	168	PYRA_SYSFS_R(thingy, THINGY); \
a7492451 GKH	169	static struct bin_attribute bin_attr_##thingy = { \
be34380e SA	170	.attr = { .name = #thingy, .mode = 0440 }, \
	171	.size = PYRA_SIZE_ ## THINGY, \
	172	.read = pyra_sysfs_read_ ## thingy, \
	173	}
cb7cf3da	174
be34380e	175	#define PYRA_BIN_ATTRIBUTE_W(thingy, THINGY) \
a7492451 GKH	176	PYRA_SYSFS_W(thingy, THINGY); \
a7492451 GKH	177	static struct bin_attribute bin_attr_##thingy = { \
be34380e SA	178	.attr = { .name = #thingy, .mode = 0220 }, \
	179	.size = PYRA_SIZE_ ## THINGY, \
	180	.write = pyra_sysfs_write_ ## thingy \
cb7cf3da SA	181	}
cb7cf3da SA	182
a7492451 GKH	183	PYRA_BIN_ATTRIBUTE_W(control, CONTROL);
	184	PYRA_BIN_ATTRIBUTE_RW(info, INFO);
	185	PYRA_BIN_ATTRIBUTE_RW(profile_settings, PROFILE_SETTINGS);
	186	PYRA_BIN_ATTRIBUTE_RW(profile_buttons, PROFILE_BUTTONS);
be34380e SA	187
be34380e SA	188	static ssize_t pyra_sysfs_read_profilex_settings(struct file *fp,
cb7cf3da SA	189	struct kobject kobj, struct bin_attribute attr, char *buf,
	190	loff_t off, size_t count)
	191	{
5012aada SA	192	struct device *dev =
5012aada SA	193	container_of(kobj, struct device, kobj)->parent->parent;
cb7cf3da	194	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
be34380e	195	ssize_t retval;
cb7cf3da	196
be34380e SA	197	retval = pyra_send_control(usb_dev, (uint )(attr->private),
be34380e SA	198	PYRA_CONTROL_REQUEST_PROFILE_SETTINGS);
cb7cf3da SA	199	if (retval)
	200	return retval;
	201
be34380e SA	202	return pyra_sysfs_read(fp, kobj, buf, off, count,
	203	PYRA_SIZE_PROFILE_SETTINGS,
	204	PYRA_COMMAND_PROFILE_SETTINGS);
cb7cf3da SA	205	}
cb7cf3da SA	206
be34380e	207	static ssize_t pyra_sysfs_read_profilex_buttons(struct file *fp,
cb7cf3da SA	208	struct kobject kobj, struct bin_attribute attr, char *buf,
	209	loff_t off, size_t count)
	210	{
5012aada SA	211	struct device *dev =
5012aada SA	212	container_of(kobj, struct device, kobj)->parent->parent;
be34380e SA	213	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
be34380e SA	214	ssize_t retval;
cb7cf3da	215
be34380e SA	216	retval = pyra_send_control(usb_dev, (uint )(attr->private),
	217	PYRA_CONTROL_REQUEST_PROFILE_BUTTONS);
	218	if (retval)
	219	return retval;
cb7cf3da	220
be34380e SA	221	return pyra_sysfs_read(fp, kobj, buf, off, count,
	222	PYRA_SIZE_PROFILE_BUTTONS,
	223	PYRA_COMMAND_PROFILE_BUTTONS);
cb7cf3da SA	224	}
cb7cf3da SA	225
a7492451 GKH	226	#define PROFILE_ATTR(number) \
	227	static struct bin_attribute bin_attr_profile##number##_settings = { \
	228	.attr = { .name = "profile##number##_settings", .mode = 0440 }, \
	229	.size = PYRA_SIZE_PROFILE_SETTINGS, \
	230	.read = pyra_sysfs_read_profilex_settings, \
	231	.private = &profile_numbers[number-1], \
	232	}; \
	233	static struct bin_attribute bin_attr_profile##number##_buttons = { \
	234	.attr = { .name = "profile##number##_buttons", .mode = 0440 }, \
	235	.size = PYRA_SIZE_PROFILE_BUTTONS, \
	236	.read = pyra_sysfs_read_profilex_buttons, \
	237	.private = &profile_numbers[number-1], \
	238	};
	239	PROFILE_ATTR(1);
	240	PROFILE_ATTR(2);
	241	PROFILE_ATTR(3);
	242	PROFILE_ATTR(4);
	243	PROFILE_ATTR(5);
	244
cb7cf3da SA	245	static ssize_t pyra_sysfs_write_settings(struct file *fp,
	246	struct kobject kobj, struct bin_attribute attr, char *buf,
	247	loff_t off, size_t count)
	248	{
5012aada SA	249	struct device *dev =
5012aada SA	250	container_of(kobj, struct device, kobj)->parent->parent;
cb7cf3da SA	251	struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
	252	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
	253	int retval = 0;
dc186b66	254	struct pyra_roccat_report roccat_report;
be34380e	255	struct pyra_settings const *settings;
cb7cf3da	256
be34380e	257	if (off != 0 \|\| count != PYRA_SIZE_SETTINGS)
cb7cf3da SA	258	return -EINVAL;
	259
	260	mutex_lock(&pyra->pyra_lock);
cb7cf3da	261
be34380e	262	settings = (struct pyra_settings const *)buf;
cb7cf3da	263
be34380e SA	264	retval = pyra_set_settings(usb_dev, settings);
	265	if (retval) {
	266	mutex_unlock(&pyra->pyra_lock);
	267	return retval;
dc186b66	268	}
be34380e SA	269
	270	profile_activated(pyra, settings->startup_profile);
	271
	272	roccat_report.type = PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2;
	273	roccat_report.value = settings->startup_profile + 1;
	274	roccat_report.key = 0;
	275	roccat_report_event(pyra->chrdev_minor,
	276	(uint8_t const *)&roccat_report);
	277
dc186b66	278	mutex_unlock(&pyra->pyra_lock);
be34380e	279	return PYRA_SIZE_SETTINGS;
cb7cf3da SA	280	}
cb7cf3da SA	281
a7492451 GKH	282	PYRA_SYSFS_R(settings, SETTINGS);
	283	static struct bin_attribute bin_attr_settings =
	284	__BIN_ATTR(settings, (S_IWUSR \| S_IRUGO),
	285	pyra_sysfs_read_settings, pyra_sysfs_write_settings,
	286	PYRA_SIZE_SETTINGS);
cb7cf3da SA	287
	288	static ssize_t pyra_sysfs_show_actual_cpi(struct device *dev,
	289	struct device_attribute attr, char buf)
	290	{
5012aada SA	291	struct pyra_device *pyra =
5012aada SA	292	hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
cb7cf3da SA	293	return snprintf(buf, PAGE_SIZE, "%d\n", pyra->actual_cpi);
cb7cf3da SA	294	}
46a58c44	295	static DEVICE_ATTR(actual_cpi, 0440, pyra_sysfs_show_actual_cpi, NULL);
cb7cf3da SA	296
	297	static ssize_t pyra_sysfs_show_actual_profile(struct device *dev,
	298	struct device_attribute attr, char buf)
	299	{
5012aada SA	300	struct pyra_device *pyra =
5012aada SA	301	hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
be34380e SA	302	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
	303	struct pyra_settings settings;
	304
	305	mutex_lock(&pyra->pyra_lock);
	306	roccat_common2_receive(usb_dev, PYRA_COMMAND_SETTINGS,
	307	&settings, PYRA_SIZE_SETTINGS);
	308	mutex_unlock(&pyra->pyra_lock);
	309
	310	return snprintf(buf, PAGE_SIZE, "%d\n", settings.startup_profile);
cb7cf3da	311	}
46a58c44 GKH	312	static DEVICE_ATTR(actual_profile, 0440, pyra_sysfs_show_actual_profile, NULL);
46a58c44 GKH	313	static DEVICE_ATTR(startup_profile, 0440, pyra_sysfs_show_actual_profile, NULL);
cb7cf3da SA	314
	315	static ssize_t pyra_sysfs_show_firmware_version(struct device *dev,
	316	struct device_attribute attr, char buf)
	317	{
be34380e SA	318	struct pyra_device *pyra;
	319	struct usb_device *usb_dev;
	320	struct pyra_info info;
cb7cf3da	321
be34380e SA	322	dev = dev->parent->parent;
	323	pyra = hid_get_drvdata(dev_get_drvdata(dev));
	324	usb_dev = interface_to_usbdev(to_usb_interface(dev));
	325
	326	mutex_lock(&pyra->pyra_lock);
	327	roccat_common2_receive(usb_dev, PYRA_COMMAND_INFO,
	328	&info, PYRA_SIZE_INFO);
	329	mutex_unlock(&pyra->pyra_lock);
	330
	331	return snprintf(buf, PAGE_SIZE, "%d\n", info.firmware_version);
cb7cf3da	332	}
46a58c44 GKH	333	static DEVICE_ATTR(firmware_version, 0440, pyra_sysfs_show_firmware_version,
	334	NULL);
	335
	336	static struct attribute *pyra_attrs[] = {
	337	&dev_attr_actual_cpi.attr,
	338	&dev_attr_actual_profile.attr,
	339	&dev_attr_firmware_version.attr,
	340	&dev_attr_startup_profile.attr,
	341	NULL,
cb7cf3da	342	};
a7492451 GKH	343
	344	static struct bin_attribute *pyra_bin_attributes[] = {
	345	&bin_attr_control,
	346	&bin_attr_info,
	347	&bin_attr_profile_settings,
	348	&bin_attr_profile_buttons,
	349	&bin_attr_settings,
	350	&bin_attr_profile1_settings,
	351	&bin_attr_profile2_settings,
	352	&bin_attr_profile3_settings,
	353	&bin_attr_profile4_settings,
	354	&bin_attr_profile5_settings,
	355	&bin_attr_profile1_buttons,
	356	&bin_attr_profile2_buttons,
	357	&bin_attr_profile3_buttons,
	358	&bin_attr_profile4_buttons,
	359	&bin_attr_profile5_buttons,
	360	NULL,
	361	};
	362
	363	static const struct attribute_group pyra_group = {
	364	.attrs = pyra_attrs,
	365	.bin_attrs = pyra_bin_attributes,
	366	};
	367
	368	static const struct attribute_group *pyra_groups[] = {
	369	&pyra_group,
	370	NULL,
cb7cf3da SA	371	};
cb7cf3da SA	372
cb7cf3da SA	373	static int pyra_init_pyra_device_struct(struct usb_device *usb_dev,
	374	struct pyra_device *pyra)
	375	{
be34380e	376	struct pyra_settings settings;
cb7cf3da SA	377	int retval, i;
	378
	379	mutex_init(&pyra->pyra_lock);
	380
be34380e	381	retval = pyra_get_settings(usb_dev, &settings);
cb7cf3da SA	382	if (retval)
	383	return retval;
	384
	385	for (i = 0; i < 5; ++i) {
	386	retval = pyra_get_profile_settings(usb_dev,
	387	&pyra->profile_settings[i], i);
	388	if (retval)
	389	return retval;
cb7cf3da SA	390	}
cb7cf3da SA	391
be34380e	392	profile_activated(pyra, settings.startup_profile);
cb7cf3da SA	393
	394	return 0;
	395	}
	396
	397	static int pyra_init_specials(struct hid_device *hdev)
	398	{
	399	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
	400	struct usb_device *usb_dev = interface_to_usbdev(intf);
	401	struct pyra_device *pyra;
	402	int retval;
	403
	404	if (intf->cur_altsetting->desc.bInterfaceProtocol
	405	== USB_INTERFACE_PROTOCOL_MOUSE) {
	406
	407	pyra = kzalloc(sizeof(*pyra), GFP_KERNEL);
	408	if (!pyra) {
4291ee30	409	hid_err(hdev, "can't alloc device descriptor\n");
cb7cf3da SA	410	return -ENOMEM;
	411	}
	412	hid_set_drvdata(hdev, pyra);
	413
	414	retval = pyra_init_pyra_device_struct(usb_dev, pyra);
	415	if (retval) {
4291ee30	416	hid_err(hdev, "couldn't init struct pyra_device\n");
cb7cf3da SA	417	goto exit_free;
	418	}
	419
8211e460 SA	420	retval = roccat_connect(pyra_class, hdev,
8211e460 SA	421	sizeof(struct pyra_roccat_report));
cb7cf3da	422	if (retval < 0) {
4291ee30	423	hid_err(hdev, "couldn't init char dev\n");
cb7cf3da SA	424	} else {
	425	pyra->chrdev_minor = retval;
	426	pyra->roccat_claimed = 1;
	427	}
cb7cf3da SA	428	} else {
	429	hid_set_drvdata(hdev, NULL);
	430	}
	431
	432	return 0;
	433	exit_free:
	434	kfree(pyra);
	435	return retval;
	436	}
	437
	438	static void pyra_remove_specials(struct hid_device *hdev)
	439	{
	440	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
	441	struct pyra_device *pyra;
	442
	443	if (intf->cur_altsetting->desc.bInterfaceProtocol
	444	== USB_INTERFACE_PROTOCOL_MOUSE) {
cb7cf3da SA	445	pyra = hid_get_drvdata(hdev);
	446	if (pyra->roccat_claimed)
	447	roccat_disconnect(pyra->chrdev_minor);
	448	kfree(hid_get_drvdata(hdev));
	449	}
	450	}
	451
	452	static int pyra_probe(struct hid_device hdev, const struct hid_device_id id)
	453	{
	454	int retval;
	455
	456	retval = hid_parse(hdev);
	457	if (retval) {
4291ee30	458	hid_err(hdev, "parse failed\n");
cb7cf3da SA	459	goto exit;
	460	}
	461
	462	retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
	463	if (retval) {
4291ee30	464	hid_err(hdev, "hw start failed\n");
cb7cf3da SA	465	goto exit;
	466	}
	467
	468	retval = pyra_init_specials(hdev);
	469	if (retval) {
4291ee30	470	hid_err(hdev, "couldn't install mouse\n");
cb7cf3da SA	471	goto exit_stop;
	472	}
	473	return 0;
	474
	475	exit_stop:
	476	hid_hw_stop(hdev);
	477	exit:
	478	return retval;
	479	}
	480
	481	static void pyra_remove(struct hid_device *hdev)
	482	{
	483	pyra_remove_specials(hdev);
	484	hid_hw_stop(hdev);
	485	}
	486
	487	static void pyra_keep_values_up_to_date(struct pyra_device *pyra,
	488	u8 const *data)
	489	{
	490	struct pyra_mouse_event_button const *button_event;
	491
	492	switch (data[0]) {
	493	case PYRA_MOUSE_REPORT_NUMBER_BUTTON:
	494	button_event = (struct pyra_mouse_event_button const *)data;
	495	switch (button_event->type) {
	496	case PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2:
	497	profile_activated(pyra, button_event->data1 - 1);
	498	break;
	499	case PYRA_MOUSE_EVENT_BUTTON_TYPE_CPI:
	500	pyra->actual_cpi = button_event->data1;
	501	break;
	502	}
	503	break;
	504	}
	505	}
	506
	507	static void pyra_report_to_chrdev(struct pyra_device const *pyra,
	508	u8 const *data)
	509	{
	510	struct pyra_roccat_report roccat_report;
	511	struct pyra_mouse_event_button const *button_event;
	512
	513	if (data[0] != PYRA_MOUSE_REPORT_NUMBER_BUTTON)
	514	return;
	515
	516	button_event = (struct pyra_mouse_event_button const *)data;
	517
	518	switch (button_event->type) {
	519	case PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2:
	520	case PYRA_MOUSE_EVENT_BUTTON_TYPE_CPI:
	521	roccat_report.type = button_event->type;
	522	roccat_report.value = button_event->data1;
	523	roccat_report.key = 0;
	524	roccat_report_event(pyra->chrdev_minor,
8211e460	525	(uint8_t const *)&roccat_report);
cb7cf3da SA	526	break;
	527	case PYRA_MOUSE_EVENT_BUTTON_TYPE_MACRO:
	528	case PYRA_MOUSE_EVENT_BUTTON_TYPE_SHORTCUT:
	529	case PYRA_MOUSE_EVENT_BUTTON_TYPE_QUICKLAUNCH:
	530	if (button_event->data2 == PYRA_MOUSE_EVENT_BUTTON_PRESS) {
	531	roccat_report.type = button_event->type;
	532	roccat_report.key = button_event->data1;
d2b570a5 SA	533	/*
	534	* pyra reports profile numbers with range 1-5.
	535	* Keeping this behaviour.
	536	*/
	537	roccat_report.value = pyra->actual_profile + 1;
cb7cf3da	538	roccat_report_event(pyra->chrdev_minor,
8211e460	539	(uint8_t const *)&roccat_report);
cb7cf3da SA	540	}
	541	break;
	542	}
	543	}
	544
	545	static int pyra_raw_event(struct hid_device hdev, struct hid_report report,
	546	u8 *data, int size)
	547	{
	548	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
	549	struct pyra_device *pyra = hid_get_drvdata(hdev);
	550
	551	if (intf->cur_altsetting->desc.bInterfaceProtocol
	552	!= USB_INTERFACE_PROTOCOL_MOUSE)
	553	return 0;
	554
901e64db SA	555	if (pyra == NULL)
	556	return 0;
	557
cb7cf3da SA	558	pyra_keep_values_up_to_date(pyra, data);
	559
	560	if (pyra->roccat_claimed)
	561	pyra_report_to_chrdev(pyra, data);
	562
	563	return 0;
	564	}
	565
	566	static const struct hid_device_id pyra_devices[] = {
	567	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT,
	568	USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
3fce2246 SA	569	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT,
3fce2246 SA	570	USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
cb7cf3da SA	571	{ }
	572	};
	573
	574	MODULE_DEVICE_TABLE(hid, pyra_devices);
	575
	576	static struct hid_driver pyra_driver = {
	577	.name = "pyra",
	578	.id_table = pyra_devices,
	579	.probe = pyra_probe,
	580	.remove = pyra_remove,
	581	.raw_event = pyra_raw_event
	582	};
	583
	584	static int __init pyra_init(void)
	585	{
5012aada SA	586	int retval;
	587
	588	/* class name has to be same as driver name */
	589	pyra_class = class_create(THIS_MODULE, "pyra");
	590	if (IS_ERR(pyra_class))
	591	return PTR_ERR(pyra_class);
46a58c44	592	pyra_class->dev_groups = pyra_groups;
5012aada SA	593
	594	retval = hid_register_driver(&pyra_driver);
	595	if (retval)
	596	class_destroy(pyra_class);
	597	return retval;
cb7cf3da SA	598	}
	599
	600	static void __exit pyra_exit(void)
	601	{
	602	hid_unregister_driver(&pyra_driver);
74b643da	603	class_destroy(pyra_class);
cb7cf3da SA	604	}
	605
	606	module_init(pyra_init);
	607	module_exit(pyra_exit);
	608
	609	MODULE_AUTHOR("Stefan Achatz");
	610	MODULE_DESCRIPTION("USB Roccat Pyra driver");
	611	MODULE_LICENSE("GPL v2");