[linux.git] / drivers / hid / hid-roccat-pyra.c

/*
 * Roccat Pyra driver for Linux
 *
 * Copyright (c) 2010 Stefan Achatz <[email protected]>
 */

/*
 * 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)
{
	if (new_profile >= ARRAY_SIZE(pyra->profile_settings))
		return;
	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 = kobj_to_dev(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 = kobj_to_dev(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 = kobj_to_dev(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 = kobj_to_dev(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 = kobj_to_dev(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;

	settings = (struct pyra_settings const *)buf;
	if (settings->startup_profile >= ARRAY_SIZE(pyra->profile_settings))
		return -EINVAL;

	mutex_lock(&pyra->pyra_lock);

	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 <[email protected]>
	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	{
606185b2 DC	38	if (new_profile >= ARRAY_SIZE(pyra->profile_settings))
606185b2 DC	39	return;
cb7cf3da SA	40	pyra->actual_profile = new_profile;
	41	pyra->actual_cpi = pyra->profile_settings[pyra->actual_profile].y_cpi;
	42	}
	43
	44	static int pyra_send_control(struct usb_device *usb_dev, int value,
	45	enum pyra_control_requests request)
	46	{
7392d73b	47	struct roccat_common2_control control;
cb7cf3da SA	48
	49	if ((request == PYRA_CONTROL_REQUEST_PROFILE_SETTINGS \|\|
	50	request == PYRA_CONTROL_REQUEST_PROFILE_BUTTONS) &&
	51	(value < 0 \|\| value > 4))
	52	return -EINVAL;
	53
4728f2dc	54	control.command = ROCCAT_COMMON_COMMAND_CONTROL;
cb7cf3da SA	55	control.value = value;
	56	control.request = request;
	57
7392d73b SA	58	return roccat_common2_send(usb_dev, ROCCAT_COMMON_COMMAND_CONTROL,
7392d73b SA	59	&control, sizeof(struct roccat_common2_control));
cb7cf3da SA	60	}
	61
	62	static int pyra_get_profile_settings(struct usb_device *usb_dev,
	63	struct pyra_profile_settings *buf, int number)
	64	{
	65	int retval;
cb7cf3da SA	66	retval = pyra_send_control(usb_dev, number,
cb7cf3da SA	67	PYRA_CONTROL_REQUEST_PROFILE_SETTINGS);
cb7cf3da SA	68	if (retval)
cb7cf3da SA	69	return retval;
7392d73b	70	return roccat_common2_receive(usb_dev, PYRA_COMMAND_PROFILE_SETTINGS,
be34380e	71	buf, PYRA_SIZE_PROFILE_SETTINGS);
cb7cf3da SA	72	}
	73
	74	static int pyra_get_settings(struct usb_device *usb_dev,
	75	struct pyra_settings *buf)
	76	{
7392d73b	77	return roccat_common2_receive(usb_dev, PYRA_COMMAND_SETTINGS,
be34380e	78	buf, PYRA_SIZE_SETTINGS);
cb7cf3da SA	79	}
	80
	81	static int pyra_set_settings(struct usb_device *usb_dev,
	82	struct pyra_settings const *settings)
	83	{
7392d73b	84	return roccat_common2_send_with_status(usb_dev,
4728f2dc	85	PYRA_COMMAND_SETTINGS, settings,
be34380e	86	PYRA_SIZE_SETTINGS);
cb7cf3da SA	87	}
cb7cf3da SA	88
be34380e SA	89	static ssize_t pyra_sysfs_read(struct file fp, struct kobject kobj,
	90	char *buf, loff_t off, size_t count,
	91	size_t real_size, uint command)
cb7cf3da	92	{
2cf83833	93	struct device *dev = kobj_to_dev(kobj)->parent->parent;
cb7cf3da	94	struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
be34380e SA	95	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
be34380e SA	96	int retval;
cb7cf3da	97
be34380e	98	if (off >= real_size)
cb7cf3da SA	99	return 0;
cb7cf3da SA	100
be34380e SA	101	if (off != 0 \|\| count != real_size)
be34380e SA	102	return -EINVAL;
cb7cf3da SA	103
cb7cf3da SA	104	mutex_lock(&pyra->pyra_lock);
be34380e	105	retval = roccat_common2_receive(usb_dev, command, buf, real_size);
cb7cf3da SA	106	mutex_unlock(&pyra->pyra_lock);
cb7cf3da SA	107
be34380e SA	108	if (retval)
	109	return retval;
	110
	111	return real_size;
cb7cf3da SA	112	}
cb7cf3da SA	113
be34380e SA	114	static ssize_t pyra_sysfs_write(struct file fp, struct kobject kobj,
	115	void const *buf, loff_t off, size_t count,
	116	size_t real_size, uint command)
cb7cf3da	117	{
2cf83833	118	struct device *dev = kobj_to_dev(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	{
2cf83833	192	struct device *dev = kobj_to_dev(kobj)->parent->parent;
cb7cf3da	193	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
be34380e	194	ssize_t retval;
cb7cf3da	195
be34380e SA	196	retval = pyra_send_control(usb_dev, (uint )(attr->private),
be34380e SA	197	PYRA_CONTROL_REQUEST_PROFILE_SETTINGS);
cb7cf3da SA	198	if (retval)
	199	return retval;
	200
be34380e SA	201	return pyra_sysfs_read(fp, kobj, buf, off, count,
	202	PYRA_SIZE_PROFILE_SETTINGS,
	203	PYRA_COMMAND_PROFILE_SETTINGS);
cb7cf3da SA	204	}
cb7cf3da SA	205
be34380e	206	static ssize_t pyra_sysfs_read_profilex_buttons(struct file *fp,
cb7cf3da SA	207	struct kobject kobj, struct bin_attribute attr, char *buf,
	208	loff_t off, size_t count)
	209	{
2cf83833	210	struct device *dev = kobj_to_dev(kobj)->parent->parent;
be34380e SA	211	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
be34380e SA	212	ssize_t retval;
cb7cf3da	213
be34380e SA	214	retval = pyra_send_control(usb_dev, (uint )(attr->private),
	215	PYRA_CONTROL_REQUEST_PROFILE_BUTTONS);
	216	if (retval)
	217	return retval;
cb7cf3da	218
be34380e SA	219	return pyra_sysfs_read(fp, kobj, buf, off, count,
	220	PYRA_SIZE_PROFILE_BUTTONS,
	221	PYRA_COMMAND_PROFILE_BUTTONS);
cb7cf3da SA	222	}
cb7cf3da SA	223
a7492451 GKH	224	#define PROFILE_ATTR(number) \
a7492451 GKH	225	static struct bin_attribute bin_attr_profile##number##_settings = { \
550dbf47	226	.attr = { .name = "profile" #number "_settings", .mode = 0440 }, \
a7492451 GKH	227	.size = PYRA_SIZE_PROFILE_SETTINGS, \
	228	.read = pyra_sysfs_read_profilex_settings, \
	229	.private = &profile_numbers[number-1], \
	230	}; \
	231	static struct bin_attribute bin_attr_profile##number##_buttons = { \
550dbf47	232	.attr = { .name = "profile" #number "_buttons", .mode = 0440 }, \
a7492451 GKH	233	.size = PYRA_SIZE_PROFILE_BUTTONS, \
	234	.read = pyra_sysfs_read_profilex_buttons, \
	235	.private = &profile_numbers[number-1], \
	236	};
	237	PROFILE_ATTR(1);
	238	PROFILE_ATTR(2);
	239	PROFILE_ATTR(3);
	240	PROFILE_ATTR(4);
	241	PROFILE_ATTR(5);
	242
cb7cf3da SA	243	static ssize_t pyra_sysfs_write_settings(struct file *fp,
	244	struct kobject kobj, struct bin_attribute attr, char *buf,
	245	loff_t off, size_t count)
	246	{
2cf83833	247	struct device *dev = kobj_to_dev(kobj)->parent->parent;
cb7cf3da SA	248	struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
	249	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
	250	int retval = 0;
dc186b66	251	struct pyra_roccat_report roccat_report;
be34380e	252	struct pyra_settings const *settings;
cb7cf3da	253
be34380e	254	if (off != 0 \|\| count != PYRA_SIZE_SETTINGS)
cb7cf3da SA	255	return -EINVAL;
cb7cf3da SA	256
be34380e	257	settings = (struct pyra_settings const *)buf;
606185b2 DC	258	if (settings->startup_profile >= ARRAY_SIZE(pyra->profile_settings))
	259	return -EINVAL;
	260
	261	mutex_lock(&pyra->pyra_lock);
cb7cf3da	262
be34380e SA	263	retval = pyra_set_settings(usb_dev, settings);
	264	if (retval) {
	265	mutex_unlock(&pyra->pyra_lock);
	266	return retval;
dc186b66	267	}
be34380e SA	268
	269	profile_activated(pyra, settings->startup_profile);
	270
	271	roccat_report.type = PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2;
	272	roccat_report.value = settings->startup_profile + 1;
	273	roccat_report.key = 0;
	274	roccat_report_event(pyra->chrdev_minor,
	275	(uint8_t const *)&roccat_report);
	276
dc186b66	277	mutex_unlock(&pyra->pyra_lock);
be34380e	278	return PYRA_SIZE_SETTINGS;
cb7cf3da SA	279	}
cb7cf3da SA	280
a7492451 GKH	281	PYRA_SYSFS_R(settings, SETTINGS);
	282	static struct bin_attribute bin_attr_settings =
	283	__BIN_ATTR(settings, (S_IWUSR \| S_IRUGO),
	284	pyra_sysfs_read_settings, pyra_sysfs_write_settings,
	285	PYRA_SIZE_SETTINGS);
cb7cf3da SA	286
	287	static ssize_t pyra_sysfs_show_actual_cpi(struct device *dev,
	288	struct device_attribute attr, char buf)
	289	{
5012aada SA	290	struct pyra_device *pyra =
5012aada SA	291	hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
cb7cf3da SA	292	return snprintf(buf, PAGE_SIZE, "%d\n", pyra->actual_cpi);
cb7cf3da SA	293	}
46a58c44	294	static DEVICE_ATTR(actual_cpi, 0440, pyra_sysfs_show_actual_cpi, NULL);
cb7cf3da SA	295
	296	static ssize_t pyra_sysfs_show_actual_profile(struct device *dev,
	297	struct device_attribute attr, char buf)
	298	{
5012aada SA	299	struct pyra_device *pyra =
5012aada SA	300	hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
be34380e SA	301	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
	302	struct pyra_settings settings;
	303
	304	mutex_lock(&pyra->pyra_lock);
	305	roccat_common2_receive(usb_dev, PYRA_COMMAND_SETTINGS,
	306	&settings, PYRA_SIZE_SETTINGS);
	307	mutex_unlock(&pyra->pyra_lock);
	308
	309	return snprintf(buf, PAGE_SIZE, "%d\n", settings.startup_profile);
cb7cf3da	310	}
46a58c44 GKH	311	static DEVICE_ATTR(actual_profile, 0440, pyra_sysfs_show_actual_profile, NULL);
46a58c44 GKH	312	static DEVICE_ATTR(startup_profile, 0440, pyra_sysfs_show_actual_profile, NULL);
cb7cf3da SA	313
	314	static ssize_t pyra_sysfs_show_firmware_version(struct device *dev,
	315	struct device_attribute attr, char buf)
	316	{
be34380e SA	317	struct pyra_device *pyra;
	318	struct usb_device *usb_dev;
	319	struct pyra_info info;
cb7cf3da	320
be34380e SA	321	dev = dev->parent->parent;
	322	pyra = hid_get_drvdata(dev_get_drvdata(dev));
	323	usb_dev = interface_to_usbdev(to_usb_interface(dev));
	324
	325	mutex_lock(&pyra->pyra_lock);
	326	roccat_common2_receive(usb_dev, PYRA_COMMAND_INFO,
	327	&info, PYRA_SIZE_INFO);
	328	mutex_unlock(&pyra->pyra_lock);
	329
	330	return snprintf(buf, PAGE_SIZE, "%d\n", info.firmware_version);
cb7cf3da	331	}
46a58c44 GKH	332	static DEVICE_ATTR(firmware_version, 0440, pyra_sysfs_show_firmware_version,
	333	NULL);
	334
	335	static struct attribute *pyra_attrs[] = {
	336	&dev_attr_actual_cpi.attr,
	337	&dev_attr_actual_profile.attr,
	338	&dev_attr_firmware_version.attr,
	339	&dev_attr_startup_profile.attr,
	340	NULL,
cb7cf3da	341	};
a7492451 GKH	342
	343	static struct bin_attribute *pyra_bin_attributes[] = {
	344	&bin_attr_control,
	345	&bin_attr_info,
	346	&bin_attr_profile_settings,
	347	&bin_attr_profile_buttons,
	348	&bin_attr_settings,
	349	&bin_attr_profile1_settings,
	350	&bin_attr_profile2_settings,
	351	&bin_attr_profile3_settings,
	352	&bin_attr_profile4_settings,
	353	&bin_attr_profile5_settings,
	354	&bin_attr_profile1_buttons,
	355	&bin_attr_profile2_buttons,
	356	&bin_attr_profile3_buttons,
	357	&bin_attr_profile4_buttons,
	358	&bin_attr_profile5_buttons,
	359	NULL,
	360	};
	361
	362	static const struct attribute_group pyra_group = {
	363	.attrs = pyra_attrs,
	364	.bin_attrs = pyra_bin_attributes,
	365	};
	366
	367	static const struct attribute_group *pyra_groups[] = {
	368	&pyra_group,
	369	NULL,
cb7cf3da SA	370	};
cb7cf3da SA	371
cb7cf3da SA	372	static int pyra_init_pyra_device_struct(struct usb_device *usb_dev,
	373	struct pyra_device *pyra)
	374	{
be34380e	375	struct pyra_settings settings;
cb7cf3da SA	376	int retval, i;
	377
	378	mutex_init(&pyra->pyra_lock);
	379
be34380e	380	retval = pyra_get_settings(usb_dev, &settings);
cb7cf3da SA	381	if (retval)
	382	return retval;
	383
	384	for (i = 0; i < 5; ++i) {
	385	retval = pyra_get_profile_settings(usb_dev,
	386	&pyra->profile_settings[i], i);
	387	if (retval)
	388	return retval;
cb7cf3da SA	389	}
cb7cf3da SA	390
be34380e	391	profile_activated(pyra, settings.startup_profile);
cb7cf3da SA	392
	393	return 0;
	394	}
	395
	396	static int pyra_init_specials(struct hid_device *hdev)
	397	{
	398	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
	399	struct usb_device *usb_dev = interface_to_usbdev(intf);
	400	struct pyra_device *pyra;
	401	int retval;
	402
	403	if (intf->cur_altsetting->desc.bInterfaceProtocol
	404	== USB_INTERFACE_PROTOCOL_MOUSE) {
	405
	406	pyra = kzalloc(sizeof(*pyra), GFP_KERNEL);
	407	if (!pyra) {
4291ee30	408	hid_err(hdev, "can't alloc device descriptor\n");
cb7cf3da SA	409	return -ENOMEM;
	410	}
	411	hid_set_drvdata(hdev, pyra);
	412
	413	retval = pyra_init_pyra_device_struct(usb_dev, pyra);
	414	if (retval) {
4291ee30	415	hid_err(hdev, "couldn't init struct pyra_device\n");
cb7cf3da SA	416	goto exit_free;
	417	}
	418
8211e460 SA	419	retval = roccat_connect(pyra_class, hdev,
8211e460 SA	420	sizeof(struct pyra_roccat_report));
cb7cf3da	421	if (retval < 0) {
4291ee30	422	hid_err(hdev, "couldn't init char dev\n");
cb7cf3da SA	423	} else {
	424	pyra->chrdev_minor = retval;
	425	pyra->roccat_claimed = 1;
	426	}
cb7cf3da SA	427	} else {
	428	hid_set_drvdata(hdev, NULL);
	429	}
	430
	431	return 0;
	432	exit_free:
	433	kfree(pyra);
	434	return retval;
	435	}
	436
	437	static void pyra_remove_specials(struct hid_device *hdev)
	438	{
	439	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
	440	struct pyra_device *pyra;
	441
	442	if (intf->cur_altsetting->desc.bInterfaceProtocol
	443	== USB_INTERFACE_PROTOCOL_MOUSE) {
cb7cf3da SA	444	pyra = hid_get_drvdata(hdev);
	445	if (pyra->roccat_claimed)
	446	roccat_disconnect(pyra->chrdev_minor);
	447	kfree(hid_get_drvdata(hdev));
	448	}
	449	}
	450
	451	static int pyra_probe(struct hid_device hdev, const struct hid_device_id id)
	452	{
	453	int retval;
	454
	455	retval = hid_parse(hdev);
	456	if (retval) {
4291ee30	457	hid_err(hdev, "parse failed\n");
cb7cf3da SA	458	goto exit;
	459	}
	460
	461	retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
	462	if (retval) {
4291ee30	463	hid_err(hdev, "hw start failed\n");
cb7cf3da SA	464	goto exit;
	465	}
	466
	467	retval = pyra_init_specials(hdev);
	468	if (retval) {
4291ee30	469	hid_err(hdev, "couldn't install mouse\n");
cb7cf3da SA	470	goto exit_stop;
	471	}
	472	return 0;
	473
	474	exit_stop:
	475	hid_hw_stop(hdev);
	476	exit:
	477	return retval;
	478	}
	479
	480	static void pyra_remove(struct hid_device *hdev)
	481	{
	482	pyra_remove_specials(hdev);
	483	hid_hw_stop(hdev);
	484	}
	485
	486	static void pyra_keep_values_up_to_date(struct pyra_device *pyra,
	487	u8 const *data)
	488	{
	489	struct pyra_mouse_event_button const *button_event;
	490
	491	switch (data[0]) {
	492	case PYRA_MOUSE_REPORT_NUMBER_BUTTON:
	493	button_event = (struct pyra_mouse_event_button const *)data;
	494	switch (button_event->type) {
	495	case PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2:
	496	profile_activated(pyra, button_event->data1 - 1);
	497	break;
	498	case PYRA_MOUSE_EVENT_BUTTON_TYPE_CPI:
	499	pyra->actual_cpi = button_event->data1;
	500	break;
	501	}
	502	break;
	503	}
	504	}
	505
	506	static void pyra_report_to_chrdev(struct pyra_device const *pyra,
	507	u8 const *data)
	508	{
	509	struct pyra_roccat_report roccat_report;
	510	struct pyra_mouse_event_button const *button_event;
	511
	512	if (data[0] != PYRA_MOUSE_REPORT_NUMBER_BUTTON)
	513	return;
	514
	515	button_event = (struct pyra_mouse_event_button const *)data;
	516
	517	switch (button_event->type) {
	518	case PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2:
	519	case PYRA_MOUSE_EVENT_BUTTON_TYPE_CPI:
	520	roccat_report.type = button_event->type;
	521	roccat_report.value = button_event->data1;
	522	roccat_report.key = 0;
	523	roccat_report_event(pyra->chrdev_minor,
8211e460	524	(uint8_t const *)&roccat_report);
cb7cf3da SA	525	break;
	526	case PYRA_MOUSE_EVENT_BUTTON_TYPE_MACRO:
	527	case PYRA_MOUSE_EVENT_BUTTON_TYPE_SHORTCUT:
	528	case PYRA_MOUSE_EVENT_BUTTON_TYPE_QUICKLAUNCH:
	529	if (button_event->data2 == PYRA_MOUSE_EVENT_BUTTON_PRESS) {
	530	roccat_report.type = button_event->type;
	531	roccat_report.key = button_event->data1;
d2b570a5 SA	532	/*
	533	* pyra reports profile numbers with range 1-5.
	534	* Keeping this behaviour.
	535	*/
	536	roccat_report.value = pyra->actual_profile + 1;
cb7cf3da	537	roccat_report_event(pyra->chrdev_minor,
8211e460	538	(uint8_t const *)&roccat_report);
cb7cf3da SA	539	}
	540	break;
	541	}
	542	}
	543
	544	static int pyra_raw_event(struct hid_device hdev, struct hid_report report,
	545	u8 *data, int size)
	546	{
	547	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
	548	struct pyra_device *pyra = hid_get_drvdata(hdev);
	549
	550	if (intf->cur_altsetting->desc.bInterfaceProtocol
	551	!= USB_INTERFACE_PROTOCOL_MOUSE)
	552	return 0;
	553
901e64db SA	554	if (pyra == NULL)
	555	return 0;
	556
cb7cf3da SA	557	pyra_keep_values_up_to_date(pyra, data);
	558
	559	if (pyra->roccat_claimed)
	560	pyra_report_to_chrdev(pyra, data);
	561
	562	return 0;
	563	}
	564
	565	static const struct hid_device_id pyra_devices[] = {
	566	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT,
	567	USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
3fce2246 SA	568	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT,
3fce2246 SA	569	USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
cb7cf3da SA	570	{ }
	571	};
	572
	573	MODULE_DEVICE_TABLE(hid, pyra_devices);
	574
	575	static struct hid_driver pyra_driver = {
	576	.name = "pyra",
	577	.id_table = pyra_devices,
	578	.probe = pyra_probe,
	579	.remove = pyra_remove,
	580	.raw_event = pyra_raw_event
	581	};
	582
	583	static int __init pyra_init(void)
	584	{
5012aada SA	585	int retval;
	586
	587	/* class name has to be same as driver name */
	588	pyra_class = class_create(THIS_MODULE, "pyra");
	589	if (IS_ERR(pyra_class))
	590	return PTR_ERR(pyra_class);
46a58c44	591	pyra_class->dev_groups = pyra_groups;
5012aada SA	592
	593	retval = hid_register_driver(&pyra_driver);
	594	if (retval)
	595	class_destroy(pyra_class);
	596	return retval;
cb7cf3da SA	597	}
	598
	599	static void __exit pyra_exit(void)
	600	{
	601	hid_unregister_driver(&pyra_driver);
74b643da	602	class_destroy(pyra_class);
cb7cf3da SA	603	}
	604
	605	module_init(pyra_init);
	606	module_exit(pyra_exit);
	607
	608	MODULE_AUTHOR("Stefan Achatz");
	609	MODULE_DESCRIPTION("USB Roccat Pyra driver");
	610	MODULE_LICENSE("GPL v2");