[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / hid / hid-roccat-isku.c

/*
 * Roccat Isku driver for Linux
 *
 * Copyright (c) 2011 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 Isku is a gamer keyboard with macro keys that can be configured in
 * 5 profiles.
 */

#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-isku.h"

static struct class *isku_class;

static void isku_profile_activated(struct isku_device *isku, uint new_profile)
{
	isku->actual_profile = new_profile;
}

static int isku_receive(struct usb_device *usb_dev, uint command,
		void *buf, uint size)
{
	return roccat_common_receive(usb_dev, command, buf, size);
}

static int isku_receive_control_status(struct usb_device *usb_dev)
{
	int retval;
	struct isku_control control;

	do {
		msleep(50);
		retval = isku_receive(usb_dev, ISKU_COMMAND_CONTROL,
				&control, sizeof(struct isku_control));

		if (retval)
			return retval;

		switch (control.value) {
		case ISKU_CONTROL_VALUE_STATUS_OK:
			return 0;
		case ISKU_CONTROL_VALUE_STATUS_WAIT:
			continue;
		case ISKU_CONTROL_VALUE_STATUS_INVALID:
		/* seems to be critical - replug necessary */
		case ISKU_CONTROL_VALUE_STATUS_OVERLOAD:
			return -EINVAL;
		default:
			hid_err(usb_dev, "isku_receive_control_status: "
					"unknown response value 0x%x\n",
					control.value);
			return -EINVAL;
		}

	} while (1);
}

static int isku_send(struct usb_device *usb_dev, uint command,
		void const *buf, uint size)
{
	int retval;

	retval = roccat_common_send(usb_dev, command, buf, size);
	if (retval)
		return retval;

	return isku_receive_control_status(usb_dev);
}

static int isku_get_actual_profile(struct usb_device *usb_dev)
{
	struct isku_actual_profile buf;
	int retval;

	retval = isku_receive(usb_dev, ISKU_COMMAND_ACTUAL_PROFILE,
			&buf, sizeof(struct isku_actual_profile));
	return retval ? retval : buf.actual_profile;
}

static int isku_set_actual_profile(struct usb_device *usb_dev, int new_profile)
{
	struct isku_actual_profile buf;

	buf.command = ISKU_COMMAND_ACTUAL_PROFILE;
	buf.size = sizeof(struct isku_actual_profile);
	buf.actual_profile = new_profile;
	return isku_send(usb_dev, ISKU_COMMAND_ACTUAL_PROFILE, &buf,
			sizeof(struct isku_actual_profile));
}

static ssize_t isku_sysfs_show_actual_profile(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	struct isku_device *isku =
			hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
	return snprintf(buf, PAGE_SIZE, "%d\n", isku->actual_profile);
}

static ssize_t isku_sysfs_set_actual_profile(struct device *dev,
		struct device_attribute *attr, char const *buf, size_t size)
{
	struct isku_device *isku;
	struct usb_device *usb_dev;
	unsigned long profile;
	int retval;
	struct isku_roccat_report roccat_report;

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

	retval = strict_strtoul(buf, 10, &profile);
	if (retval)
		return retval;

	if (profile > 4)
		return -EINVAL;

	mutex_lock(&isku->isku_lock);

	retval = isku_set_actual_profile(usb_dev, profile);
	if (retval) {
		mutex_unlock(&isku->isku_lock);
		return retval;
	}

	isku_profile_activated(isku, profile);

	roccat_report.event = ISKU_REPORT_BUTTON_EVENT_PROFILE;
	roccat_report.data1 = profile + 1;
	roccat_report.data2 = 0;
	roccat_report.profile = profile + 1;
	roccat_report_event(isku->chrdev_minor, (uint8_t const *)&roccat_report);

	mutex_unlock(&isku->isku_lock);

	return size;
}

static struct device_attribute isku_attributes[] = {
	__ATTR(actual_profile, 0660,
			isku_sysfs_show_actual_profile,
			isku_sysfs_set_actual_profile),
	__ATTR_NULL
};

static ssize_t isku_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 isku_device *isku = 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(&isku->isku_lock);
	retval = isku_receive(usb_dev, command, buf, real_size);
	mutex_unlock(&isku->isku_lock);

	return retval ? retval : real_size;
}

static ssize_t isku_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 isku_device *isku = 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(&isku->isku_lock);
	retval = isku_send(usb_dev, command, (void *)buf, real_size);
	mutex_unlock(&isku->isku_lock);

	return retval ? retval : real_size;
}

#define ISKU_SYSFS_W(thingy, THINGY) \
static ssize_t isku_sysfs_write_ ## thingy(struct file *fp, struct kobject *kobj, \
		struct bin_attribute *attr, char *buf, \
		loff_t off, size_t count) \
{ \
	return isku_sysfs_write(fp, kobj, buf, off, count, \
			sizeof(struct isku_ ## thingy), ISKU_COMMAND_ ## THINGY); \
}

#define ISKU_SYSFS_R(thingy, THINGY) \
static ssize_t isku_sysfs_read_ ## thingy(struct file *fp, struct kobject *kobj, \
		struct bin_attribute *attr, char *buf, \
		loff_t off, size_t count) \
{ \
	return isku_sysfs_read(fp, kobj, buf, off, count, \
			sizeof(struct isku_ ## thingy), ISKU_COMMAND_ ## THINGY); \
}

#define ISKU_SYSFS_RW(thingy, THINGY) \
ISKU_SYSFS_R(thingy, THINGY) \
ISKU_SYSFS_W(thingy, THINGY)

#define ISKU_BIN_ATTR_RW(thingy) \
{ \
	.attr = { .name = #thingy, .mode = 0660 }, \
	.size = sizeof(struct isku_ ## thingy), \
	.read = isku_sysfs_read_ ## thingy, \
	.write = isku_sysfs_write_ ## thingy \
}

#define ISKU_BIN_ATTR_R(thingy) \
{ \
	.attr = { .name = #thingy, .mode = 0440 }, \
	.size = sizeof(struct isku_ ## thingy), \
	.read = isku_sysfs_read_ ## thingy, \
}

#define ISKU_BIN_ATTR_W(thingy) \
{ \
	.attr = { .name = #thingy, .mode = 0220 }, \
	.size = sizeof(struct isku_ ## thingy), \
	.write = isku_sysfs_write_ ## thingy \
}

ISKU_SYSFS_RW(macro, MACRO)
ISKU_SYSFS_RW(keys_function, KEYS_FUNCTION)
ISKU_SYSFS_RW(keys_easyzone, KEYS_EASYZONE)
ISKU_SYSFS_RW(keys_media, KEYS_MEDIA)
ISKU_SYSFS_RW(keys_thumbster, KEYS_THUMBSTER)
ISKU_SYSFS_RW(keys_macro, KEYS_MACRO)
ISKU_SYSFS_RW(keys_capslock, KEYS_CAPSLOCK)
ISKU_SYSFS_RW(light, LIGHT)
ISKU_SYSFS_RW(key_mask, KEY_MASK)
ISKU_SYSFS_RW(last_set, LAST_SET)
ISKU_SYSFS_W(talk, TALK)
ISKU_SYSFS_R(info, INFO)
ISKU_SYSFS_W(control, CONTROL)

static struct bin_attribute isku_bin_attributes[] = {
	ISKU_BIN_ATTR_RW(macro),
	ISKU_BIN_ATTR_RW(keys_function),
	ISKU_BIN_ATTR_RW(keys_easyzone),
	ISKU_BIN_ATTR_RW(keys_media),
	ISKU_BIN_ATTR_RW(keys_thumbster),
	ISKU_BIN_ATTR_RW(keys_macro),
	ISKU_BIN_ATTR_RW(keys_capslock),
	ISKU_BIN_ATTR_RW(light),
	ISKU_BIN_ATTR_RW(key_mask),
	ISKU_BIN_ATTR_RW(last_set),
	ISKU_BIN_ATTR_W(talk),
	ISKU_BIN_ATTR_R(info),
	ISKU_BIN_ATTR_W(control),
	__ATTR_NULL
};

static int isku_init_isku_device_struct(struct usb_device *usb_dev,
		struct isku_device *isku)
{
	int retval;

	mutex_init(&isku->isku_lock);

	retval = isku_get_actual_profile(usb_dev);
	if (retval < 0)
		return retval;
	isku_profile_activated(isku, retval);

	return 0;
}

static int isku_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 isku_device *isku;
	int retval;

	if (intf->cur_altsetting->desc.bInterfaceProtocol
			!= ISKU_USB_INTERFACE_PROTOCOL) {
		hid_set_drvdata(hdev, NULL);
		return 0;
	}

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

	retval = isku_init_isku_device_struct(usb_dev, isku);
	if (retval) {
		hid_err(hdev, "couldn't init struct isku_device\n");
		goto exit_free;
	}

	retval = roccat_connect(isku_class, hdev,
			sizeof(struct isku_roccat_report));
	if (retval < 0) {
		hid_err(hdev, "couldn't init char dev\n");
	} else {
		isku->chrdev_minor = retval;
		isku->roccat_claimed = 1;
	}

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

static void isku_remove_specials(struct hid_device *hdev)
{
	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
	struct isku_device *isku;

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

	isku = hid_get_drvdata(hdev);
	if (isku->roccat_claimed)
		roccat_disconnect(isku->chrdev_minor);
	kfree(isku);
}

static int isku_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 = isku_init_specials(hdev);
	if (retval) {
		hid_err(hdev, "couldn't install keyboard\n");
		goto exit_stop;
	}

	return 0;

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

static void isku_remove(struct hid_device *hdev)
{
	isku_remove_specials(hdev);
	hid_hw_stop(hdev);
}

static void isku_keep_values_up_to_date(struct isku_device *isku,
		u8 const *data)
{
	struct isku_report_button const *button_report;

	switch (data[0]) {
	case ISKU_REPORT_NUMBER_BUTTON:
		button_report = (struct isku_report_button const *)data;
		switch (button_report->event) {
		case ISKU_REPORT_BUTTON_EVENT_PROFILE:
			isku_profile_activated(isku, button_report->data1 - 1);
			break;
		}
		break;
	}
}

static void isku_report_to_chrdev(struct isku_device const *isku,
		u8 const *data)
{
	struct isku_roccat_report roccat_report;
	struct isku_report_button const *button_report;

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

	button_report = (struct isku_report_button const *)data;

	roccat_report.event = button_report->event;
	roccat_report.data1 = button_report->data1;
	roccat_report.data2 = button_report->data2;
	roccat_report.profile = isku->actual_profile + 1;
	roccat_report_event(isku->chrdev_minor,
			(uint8_t const *)&roccat_report);
}

static int isku_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 isku_device *isku = hid_get_drvdata(hdev);

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

	if (isku == NULL)
		return 0;

	isku_keep_values_up_to_date(isku, data);

	if (isku->roccat_claimed)
		isku_report_to_chrdev(isku, data);

	return 0;
}

static const struct hid_device_id isku_devices[] = {
	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
	{ }
};

MODULE_DEVICE_TABLE(hid, isku_devices);

static struct hid_driver isku_driver = {
		.name = "isku",
		.id_table = isku_devices,
		.probe = isku_probe,
		.remove = isku_remove,
		.raw_event = isku_raw_event
};

static int __init isku_init(void)
{
	int retval;
	isku_class = class_create(THIS_MODULE, "isku");
	if (IS_ERR(isku_class))
		return PTR_ERR(isku_class);
	isku_class->dev_attrs = isku_attributes;
	isku_class->dev_bin_attrs = isku_bin_attributes;

	retval = hid_register_driver(&isku_driver);
	if (retval)
		class_destroy(isku_class);
	return retval;
}

static void __exit isku_exit(void)
{
	hid_unregister_driver(&isku_driver);
	class_destroy(isku_class);
}

module_init(isku_init);
module_exit(isku_exit);

MODULE_AUTHOR("Stefan Achatz");
MODULE_DESCRIPTION("USB Roccat Isku driver");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
d41c2a70 SA	1	/*
	2	* Roccat Isku driver for Linux
	3	*
	4	* Copyright (c) 2011 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 Isku is a gamer keyboard with macro keys that can be configured in
	16	* 5 profiles.
	17	*/
	18
	19	#include <linux/device.h>
	20	#include <linux/input.h>
	21	#include <linux/hid.h>
	22	#include <linux/module.h>
	23	#include <linux/slab.h>
	24	#include <linux/hid-roccat.h>
	25	#include "hid-ids.h"
	26	#include "hid-roccat-common.h"
	27	#include "hid-roccat-isku.h"
	28
	29	static struct class *isku_class;
	30
	31	static void isku_profile_activated(struct isku_device *isku, uint new_profile)
	32	{
	33	isku->actual_profile = new_profile;
	34	}
	35
	36	static int isku_receive(struct usb_device *usb_dev, uint command,
	37	void *buf, uint size)
	38	{
	39	return roccat_common_receive(usb_dev, command, buf, size);
	40	}
	41
	42	static int isku_receive_control_status(struct usb_device *usb_dev)
	43	{
	44	int retval;
	45	struct isku_control control;
	46
	47	do {
	48	msleep(50);
	49	retval = isku_receive(usb_dev, ISKU_COMMAND_CONTROL,
	50	&control, sizeof(struct isku_control));
	51
	52	if (retval)
	53	return retval;
	54
	55	switch (control.value) {
	56	case ISKU_CONTROL_VALUE_STATUS_OK:
	57	return 0;
	58	case ISKU_CONTROL_VALUE_STATUS_WAIT:
	59	continue;
	60	case ISKU_CONTROL_VALUE_STATUS_INVALID:
	61	/* seems to be critical - replug necessary */
	62	case ISKU_CONTROL_VALUE_STATUS_OVERLOAD:
	63	return -EINVAL;
	64	default:
65	hid_err(usb_dev, "isku_receive_control_status: "
66	"unknown response value 0x%x\n",
67	control.value);
68	return -EINVAL;
69	}
70
71	} while (1);
72	}
73
74	static int isku_send(struct usb_device *usb_dev, uint command,
75	void const *buf, uint size)
76	{
77	int retval;
78
79	retval = roccat_common_send(usb_dev, command, buf, size);
80	if (retval)
81	return retval;
82
83	return isku_receive_control_status(usb_dev);
84	}
85
86	static int isku_get_actual_profile(struct usb_device *usb_dev)
87	{
88	struct isku_actual_profile buf;
89	int retval;
90
91	retval = isku_receive(usb_dev, ISKU_COMMAND_ACTUAL_PROFILE,
92	&buf, sizeof(struct isku_actual_profile));
93	return retval ? retval : buf.actual_profile;
94	}
95
96	static int isku_set_actual_profile(struct usb_device *usb_dev, int new_profile)
97	{
98	struct isku_actual_profile buf;
99
100	buf.command = ISKU_COMMAND_ACTUAL_PROFILE;
101	buf.size = sizeof(struct isku_actual_profile);
102	buf.actual_profile = new_profile;
103	return isku_send(usb_dev, ISKU_COMMAND_ACTUAL_PROFILE, &buf,
104	sizeof(struct isku_actual_profile));
105	}
106
107	static ssize_t isku_sysfs_show_actual_profile(struct device *dev,
108	struct device_attribute attr, char buf)
109	{
110	struct isku_device *isku =
111	hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
112	return snprintf(buf, PAGE_SIZE, "%d\n", isku->actual_profile);
113	}
114
115	static ssize_t isku_sysfs_set_actual_profile(struct device *dev,
116	struct device_attribute attr, char const buf, size_t size)
117	{
118	struct isku_device *isku;
119	struct usb_device *usb_dev;
120	unsigned long profile;
121	int retval;
122	struct isku_roccat_report roccat_report;
123
124	dev = dev->parent->parent;
125	isku = hid_get_drvdata(dev_get_drvdata(dev));
126	usb_dev = interface_to_usbdev(to_usb_interface(dev));
127
128	retval = strict_strtoul(buf, 10, &profile);
129	if (retval)
130	return retval;
131
132	if (profile > 4)
133	return -EINVAL;
134
135	mutex_lock(&isku->isku_lock);
136
137	retval = isku_set_actual_profile(usb_dev, profile);
138	if (retval) {
139	mutex_unlock(&isku->isku_lock);
140	return retval;
141	}
142
143	isku_profile_activated(isku, profile);
144
145	roccat_report.event = ISKU_REPORT_BUTTON_EVENT_PROFILE;
146	roccat_report.data1 = profile + 1;
147	roccat_report.data2 = 0;
148	roccat_report.profile = profile + 1;
149	roccat_report_event(isku->chrdev_minor, (uint8_t const *)&roccat_report);
150
151	mutex_unlock(&isku->isku_lock);
152
153	return size;
154	}
155
156	static struct device_attribute isku_attributes[] = {
157	__ATTR(actual_profile, 0660,
158	isku_sysfs_show_actual_profile,
159	isku_sysfs_set_actual_profile),
160	__ATTR_NULL
161	};
162
163	static ssize_t isku_sysfs_read(struct file fp, struct kobject kobj,
164	char *buf, loff_t off, size_t count,
165	size_t real_size, uint command)
166	{
167	struct device *dev =
168	container_of(kobj, struct device, kobj)->parent->parent;
169	struct isku_device *isku = hid_get_drvdata(dev_get_drvdata(dev));
170	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
171	int retval;
172
173	if (off >= real_size)
174	return 0;
175
176	if (off != 0 \|\| count != real_size)
177	return -EINVAL;
178
179	mutex_lock(&isku->isku_lock);
180	retval = isku_receive(usb_dev, command, buf, real_size);
181	mutex_unlock(&isku->isku_lock);
182
183	return retval ? retval : real_size;
184	}
185
186	static ssize_t isku_sysfs_write(struct file fp, struct kobject kobj,
187	void const *buf, loff_t off, size_t count,
188	size_t real_size, uint command)
189	{
190	struct device *dev =
191	container_of(kobj, struct device, kobj)->parent->parent;
192	struct isku_device *isku = hid_get_drvdata(dev_get_drvdata(dev));
193	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
194	int retval;
195
196	if (off != 0 \|\| count != real_size)
197	return -EINVAL;
198
199	mutex_lock(&isku->isku_lock);
200	retval = isku_send(usb_dev, command, (void *)buf, real_size);
201	mutex_unlock(&isku->isku_lock);
202
203	return retval ? retval : real_size;
204	}
205
206	#define ISKU_SYSFS_W(thingy, THINGY) \
207	static ssize_t isku_sysfs_write_ ## thingy(struct file fp, struct kobject kobj, \
208	struct bin_attribute attr, char buf, \
209	loff_t off, size_t count) \
210	{ \
211	return isku_sysfs_write(fp, kobj, buf, off, count, \
212	sizeof(struct isku_ ## thingy), ISKU_COMMAND_ ## THINGY); \
213	}
214
215	#define ISKU_SYSFS_R(thingy, THINGY) \
216	static ssize_t isku_sysfs_read_ ## thingy(struct file fp, struct kobject kobj, \
217	struct bin_attribute attr, char buf, \
218	loff_t off, size_t count) \
219	{ \
220	return isku_sysfs_read(fp, kobj, buf, off, count, \
221	sizeof(struct isku_ ## thingy), ISKU_COMMAND_ ## THINGY); \
222	}
223
224	#define ISKU_SYSFS_RW(thingy, THINGY) \
225	ISKU_SYSFS_R(thingy, THINGY) \
226	ISKU_SYSFS_W(thingy, THINGY)
227
228	#define ISKU_BIN_ATTR_RW(thingy) \
229	{ \
230	.attr = { .name = #thingy, .mode = 0660 }, \
231	.size = sizeof(struct isku_ ## thingy), \
232	.read = isku_sysfs_read_ ## thingy, \
233	.write = isku_sysfs_write_ ## thingy \
234	}
235
236	#define ISKU_BIN_ATTR_R(thingy) \
237	{ \
238	.attr = { .name = #thingy, .mode = 0440 }, \
239	.size = sizeof(struct isku_ ## thingy), \
240	.read = isku_sysfs_read_ ## thingy, \
241	}
242
243	#define ISKU_BIN_ATTR_W(thingy) \
244	{ \
245	.attr = { .name = #thingy, .mode = 0220 }, \
246	.size = sizeof(struct isku_ ## thingy), \
247	.write = isku_sysfs_write_ ## thingy \
248	}
249
250	ISKU_SYSFS_RW(macro, MACRO)
251	ISKU_SYSFS_RW(keys_function, KEYS_FUNCTION)
252	ISKU_SYSFS_RW(keys_easyzone, KEYS_EASYZONE)
253	ISKU_SYSFS_RW(keys_media, KEYS_MEDIA)
254	ISKU_SYSFS_RW(keys_thumbster, KEYS_THUMBSTER)
255	ISKU_SYSFS_RW(keys_macro, KEYS_MACRO)
256	ISKU_SYSFS_RW(keys_capslock, KEYS_CAPSLOCK)
257	ISKU_SYSFS_RW(light, LIGHT)
258	ISKU_SYSFS_RW(key_mask, KEY_MASK)
259	ISKU_SYSFS_RW(last_set, LAST_SET)
260	ISKU_SYSFS_W(talk, TALK)
261	ISKU_SYSFS_R(info, INFO)
262	ISKU_SYSFS_W(control, CONTROL)
263
264	static struct bin_attribute isku_bin_attributes[] = {
265	ISKU_BIN_ATTR_RW(macro),
266	ISKU_BIN_ATTR_RW(keys_function),
267	ISKU_BIN_ATTR_RW(keys_easyzone),
268	ISKU_BIN_ATTR_RW(keys_media),
269	ISKU_BIN_ATTR_RW(keys_thumbster),
270	ISKU_BIN_ATTR_RW(keys_macro),
271	ISKU_BIN_ATTR_RW(keys_capslock),
272	ISKU_BIN_ATTR_RW(light),
273	ISKU_BIN_ATTR_RW(key_mask),
274	ISKU_BIN_ATTR_RW(last_set),
275	ISKU_BIN_ATTR_W(talk),
276	ISKU_BIN_ATTR_R(info),
277	ISKU_BIN_ATTR_W(control),
278	__ATTR_NULL
279	};
280
281	static int isku_init_isku_device_struct(struct usb_device *usb_dev,
282	struct isku_device *isku)
283	{
284	int retval;
285
286	mutex_init(&isku->isku_lock);
287
288	retval = isku_get_actual_profile(usb_dev);
289	if (retval < 0)
290	return retval;
291	isku_profile_activated(isku, retval);
292
293	return 0;
294	}
295
296	static int isku_init_specials(struct hid_device *hdev)
297	{
298	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
299	struct usb_device *usb_dev = interface_to_usbdev(intf);
300	struct isku_device *isku;
301	int retval;
302
303	if (intf->cur_altsetting->desc.bInterfaceProtocol
304	!= ISKU_USB_INTERFACE_PROTOCOL) {
305	hid_set_drvdata(hdev, NULL);
306	return 0;
307	}
308
309	isku = kzalloc(sizeof(*isku), GFP_KERNEL);
310	if (!isku) {
311	hid_err(hdev, "can't alloc device descriptor\n");
312	return -ENOMEM;
313	}
314	hid_set_drvdata(hdev, isku);
315
316	retval = isku_init_isku_device_struct(usb_dev, isku);
317	if (retval) {
318	hid_err(hdev, "couldn't init struct isku_device\n");
319	goto exit_free;
320	}
321
322	retval = roccat_connect(isku_class, hdev,
323	sizeof(struct isku_roccat_report));
324	if (retval < 0) {
325	hid_err(hdev, "couldn't init char dev\n");
326	} else {
327	isku->chrdev_minor = retval;
328	isku->roccat_claimed = 1;
329	}
330
331	return 0;
332	exit_free:
333	kfree(isku);
334	return retval;
335	}
336
337	static void isku_remove_specials(struct hid_device *hdev)
338	{
339	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
340	struct isku_device *isku;
341
342	if (intf->cur_altsetting->desc.bInterfaceProtocol
343	!= ISKU_USB_INTERFACE_PROTOCOL)
344	return;
345
346	isku = hid_get_drvdata(hdev);
347	if (isku->roccat_claimed)
348	roccat_disconnect(isku->chrdev_minor);
349	kfree(isku);
350	}
351
352	static int isku_probe(struct hid_device *hdev,
353	const struct hid_device_id *id)
354	{
355	int retval;
356
357	retval = hid_parse(hdev);
358	if (retval) {
359	hid_err(hdev, "parse failed\n");
360	goto exit;
361	}
362
363	retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
364	if (retval) {
365	hid_err(hdev, "hw start failed\n");
366	goto exit;
367	}
368
369	retval = isku_init_specials(hdev);
370	if (retval) {
371	hid_err(hdev, "couldn't install keyboard\n");
372	goto exit_stop;
373	}
374
375	return 0;
376
377	exit_stop:
378	hid_hw_stop(hdev);
379	exit:
380	return retval;
381	}
382
383	static void isku_remove(struct hid_device *hdev)
384	{
385	isku_remove_specials(hdev);
386	hid_hw_stop(hdev);
387	}
388
389	static void isku_keep_values_up_to_date(struct isku_device *isku,
390	u8 const *data)
391	{
392	struct isku_report_button const *button_report;
393
394	switch (data[0]) {
395	case ISKU_REPORT_NUMBER_BUTTON:
396	button_report = (struct isku_report_button const *)data;
397	switch (button_report->event) {
398	case ISKU_REPORT_BUTTON_EVENT_PROFILE:
399	isku_profile_activated(isku, button_report->data1 - 1);
400	break;
401	}
402	break;
403	}
404	}
405
406	static void isku_report_to_chrdev(struct isku_device const *isku,
407	u8 const *data)
408	{
409	struct isku_roccat_report roccat_report;
410	struct isku_report_button const *button_report;
411
412	if (data[0] != ISKU_REPORT_NUMBER_BUTTON)
413	return;
414
415	button_report = (struct isku_report_button const *)data;
416
417	roccat_report.event = button_report->event;
418	roccat_report.data1 = button_report->data1;
419	roccat_report.data2 = button_report->data2;
420	roccat_report.profile = isku->actual_profile + 1;
421	roccat_report_event(isku->chrdev_minor,
422	(uint8_t const *)&roccat_report);
423	}
424
425	static int isku_raw_event(struct hid_device *hdev,
426	struct hid_report report, u8 data, int size)
427	{
428	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
429	struct isku_device *isku = hid_get_drvdata(hdev);
430
431	if (intf->cur_altsetting->desc.bInterfaceProtocol
432	!= ISKU_USB_INTERFACE_PROTOCOL)
433	return 0;
434
435	if (isku == NULL)
436	return 0;
437
438	isku_keep_values_up_to_date(isku, data);
439
440	if (isku->roccat_claimed)
441	isku_report_to_chrdev(isku, data);
442
443	return 0;
444	}
445
446	static const struct hid_device_id isku_devices[] = {
447	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
448	{ }
449	};
450
451	MODULE_DEVICE_TABLE(hid, isku_devices);
452
453	static struct hid_driver isku_driver = {
454	.name = "isku",
455	.id_table = isku_devices,
456	.probe = isku_probe,
457	.remove = isku_remove,
458	.raw_event = isku_raw_event
459	};
460
461	static int __init isku_init(void)
462	{
463	int retval;
464	isku_class = class_create(THIS_MODULE, "isku");
465	if (IS_ERR(isku_class))
466	return PTR_ERR(isku_class);
467	isku_class->dev_attrs = isku_attributes;
468	isku_class->dev_bin_attrs = isku_bin_attributes;
469
470	retval = hid_register_driver(&isku_driver);
471	if (retval)
472	class_destroy(isku_class);
473	return retval;
474	}
475
476	static void __exit isku_exit(void)
477	{
478	hid_unregister_driver(&isku_driver);
479	class_destroy(isku_class);
480	}
481
482	module_init(isku_init);
483	module_exit(isku_exit);
484
485	MODULE_AUTHOR("Stefan Achatz");
486	MODULE_DESCRIPTION("USB Roccat Isku driver");
487	MODULE_LICENSE("GPL v2");