[deliverable/linux.git] / drivers / usb / input / wacom_sys.c

/*
 * drivers/usb/input/wacom_sys.c
 *
 *  USB Wacom Graphire and Wacom Intuos tablet support - system specific code
 */

/*
 * 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.
 */

#include "wacom.h"
#include "wacom_wac.h"

#define USB_REQ_GET_REPORT	0x01
#define USB_REQ_SET_REPORT	0x09

static int usb_get_report(struct usb_interface *intf, unsigned char type,
				unsigned char id, void *buf, int size)
{
	return usb_control_msg(interface_to_usbdev(intf),
		usb_rcvctrlpipe(interface_to_usbdev(intf), 0),
		USB_REQ_GET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
		(type << 8) + id, intf->altsetting[0].desc.bInterfaceNumber,
		buf, size, 100);
}

static int usb_set_report(struct usb_interface *intf, unsigned char type,
				unsigned char id, void *buf, int size)
{
	return usb_control_msg(interface_to_usbdev(intf),
		usb_sndctrlpipe(interface_to_usbdev(intf), 0),
                USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
                (type << 8) + id, intf->altsetting[0].desc.bInterfaceNumber,
		buf, size, 1000);
}

static struct input_dev * get_input_dev(struct wacom_combo *wcombo)
{
	return wcombo->wacom->dev;
}

void wacom_sys_irq(struct urb *urb, struct pt_regs *regs)
{
	struct wacom *wacom = urb->context;
	struct wacom_combo wcombo;
	int retval;

	switch (urb->status) {
	case 0:
		/* success */
		break;
	case -ECONNRESET:
	case -ENOENT:
	case -ESHUTDOWN:
		/* this urb is terminated, clean up */
		dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
		return;
	default:
		dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
		goto exit;
	}

	wcombo.wacom = wacom;
	wcombo.urb = urb;
	wcombo.regs = regs;

	if (wacom_wac_irq(wacom->wacom_wac, (void *)&wcombo))
		input_sync(get_input_dev(&wcombo));

 exit:
	retval = usb_submit_urb (urb, GFP_ATOMIC);
	if (retval)
		err ("%s - usb_submit_urb failed with result %d",
		     __FUNCTION__, retval);
}

void wacom_report_key(void *wcombo, unsigned int key_type, int key_data)
{
	input_report_key(get_input_dev((struct wacom_combo *)wcombo), key_type, key_data);
	return;
}

void wacom_report_abs(void *wcombo, unsigned int abs_type, int abs_data)
{
	input_report_abs(get_input_dev((struct wacom_combo *)wcombo), abs_type, abs_data);
	return;
}

void wacom_report_rel(void *wcombo, unsigned int rel_type, int rel_data)
{
	input_report_rel(get_input_dev((struct wacom_combo *)wcombo), rel_type, rel_data);
	return;
}

void wacom_input_event(void *wcombo, unsigned int type, unsigned int code, int value)
{
	input_event(get_input_dev((struct wacom_combo *)wcombo), type, code, value);
	return;
}

__u16 wacom_be16_to_cpu(unsigned char *data)
{
	__u16 value;
	value = be16_to_cpu(*(__be16 *) data);
	return value;
}

__u16 wacom_le16_to_cpu(unsigned char *data)
{
	__u16 value;
	value = be16_to_cpu(*(__be16 *) data);
	return value;
}

void wacom_input_regs(void *wcombo)
{
	input_regs(get_input_dev((struct wacom_combo *)wcombo), ((struct wacom_combo *)wcombo)->regs);
	return;
}

void wacom_input_sync(void *wcombo)
{
	input_sync(get_input_dev((struct wacom_combo *)wcombo));
	return;
}

static int wacom_open(struct input_dev *dev)
{
	struct wacom *wacom = dev->private;

	wacom->irq->dev = wacom->usbdev;
	if (usb_submit_urb(wacom->irq, GFP_KERNEL))
		return -EIO;

	return 0;
}

static void wacom_close(struct input_dev *dev)
{
	struct wacom *wacom = dev->private;

	usb_kill_urb(wacom->irq);
}

void input_dev_g4(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
{
	input_dev->evbit[0] |= BIT(EV_MSC);
	input_dev->mscbit[0] |= BIT(MSC_SERIAL);
	input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_FINGER);
	input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_0) | BIT(BTN_1) | BIT(BTN_2) | BIT(BTN_3) | BIT(BTN_4) | BIT(BTN_5) | BIT(BTN_6) | BIT(BTN_7);
}

void input_dev_g(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
{
	input_dev->evbit[0] |= BIT(EV_REL);
	input_dev->relbit[0] |= BIT(REL_WHEEL);
	input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
	input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_RUBBER) | BIT(BTN_TOOL_MOUSE) | BIT(BTN_STYLUS2);
	input_set_abs_params(input_dev, ABS_DISTANCE, 0, wacom_wac->features->distance_max, 0, 0);
}

void input_dev_i3(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
{
	input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_FINGER);
	input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_0) | BIT(BTN_1) | BIT(BTN_2) | BIT(BTN_3) | BIT(BTN_4) | BIT(BTN_5) | BIT(BTN_6) | BIT(BTN_7);
	input_set_abs_params(input_dev, ABS_RX, 0, 4097, 0, 0);
	input_set_abs_params(input_dev, ABS_RY, 0, 4097, 0, 0);
}

void input_dev_i(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
{
	input_dev->evbit[0] |= BIT(EV_MSC) | BIT(EV_REL);
	input_dev->mscbit[0] |= BIT(MSC_SERIAL);
	input_dev->relbit[0] |= BIT(REL_WHEEL);
	input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE) | BIT(BTN_SIDE) | BIT(BTN_EXTRA);
	input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_RUBBER) | BIT(BTN_TOOL_MOUSE)	| BIT(BTN_TOOL_BRUSH)
		| BIT(BTN_TOOL_PENCIL) | BIT(BTN_TOOL_AIRBRUSH) | BIT(BTN_TOOL_LENS) | BIT(BTN_STYLUS2);
	input_set_abs_params(input_dev, ABS_DISTANCE, 0, wacom_wac->features->distance_max, 0, 0);
	input_set_abs_params(input_dev, ABS_WHEEL, 0, 1023, 0, 0);
	input_set_abs_params(input_dev, ABS_TILT_X, 0, 127, 0, 0);
	input_set_abs_params(input_dev, ABS_TILT_Y, 0, 127, 0, 0);
	input_set_abs_params(input_dev, ABS_RZ, -900, 899, 0, 0);
	input_set_abs_params(input_dev, ABS_THROTTLE, -1023, 1023, 0, 0);
}

void input_dev_pl(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
{
	input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_STYLUS2) | BIT(BTN_TOOL_RUBBER);
}

void input_dev_pt(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
{
	input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_RUBBER);
}

static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
	struct usb_device *dev = interface_to_usbdev(intf);
	struct usb_endpoint_descriptor *endpoint;
	struct wacom *wacom;
	struct wacom_wac *wacom_wac;
	struct input_dev *input_dev;
	char rep_data[2], limit = 0;

	wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
	wacom_wac = kzalloc(sizeof(struct wacom_wac), GFP_KERNEL);
	input_dev = input_allocate_device();
	if (!wacom || !input_dev || !wacom_wac)
		goto fail1;

	wacom_wac->data = usb_buffer_alloc(dev, 10, GFP_KERNEL, &wacom->data_dma);
	if (!wacom_wac->data)
		goto fail1;

	wacom->irq = usb_alloc_urb(0, GFP_KERNEL);
	if (!wacom->irq)
		goto fail2;

	wacom->usbdev = dev;
	wacom->dev = input_dev;
	usb_make_path(dev, wacom->phys, sizeof(wacom->phys));
	strlcat(wacom->phys, "/input0", sizeof(wacom->phys));

	wacom_wac->features = get_wacom_feature(id);
	if (wacom_wac->features->pktlen > 10)
		BUG();

	input_dev->name = wacom_wac->features->name;
	wacom->wacom_wac = wacom_wac;
	usb_to_input_id(dev, &input_dev->id);

	input_dev->cdev.dev = &intf->dev;
	input_dev->private = wacom;
	input_dev->open = wacom_open;
	input_dev->close = wacom_close;

	input_dev->evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS);
	input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_PEN) | BIT(BTN_TOUCH) | BIT(BTN_STYLUS);
	input_set_abs_params(input_dev, ABS_X, 0, wacom_wac->features->x_max, 4, 0);
	input_set_abs_params(input_dev, ABS_Y, 0, wacom_wac->features->y_max, 4, 0);
	input_set_abs_params(input_dev, ABS_PRESSURE, 0, wacom_wac->features->pressure_max, 0, 0);
	input_dev->absbit[LONG(ABS_MISC)] |= BIT(ABS_MISC);

	wacom_init_input_dev(input_dev, wacom_wac);

	endpoint = &intf->cur_altsetting->endpoint[0].desc;

	usb_fill_int_urb(wacom->irq, dev,
			 usb_rcvintpipe(dev, endpoint->bEndpointAddress),
			 wacom_wac->data, wacom_wac->features->pktlen,
			 wacom_wac->features->irq, wacom, endpoint->bInterval);
	wacom->irq->transfer_dma = wacom->data_dma;
	wacom->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;

	input_register_device(wacom->dev);

	/* Ask the tablet to report tablet data. Repeat until it succeeds */
	do {
		rep_data[0] = 2;
		rep_data[1] = 2;
		usb_set_report(intf, 3, 2, rep_data, 2);
		usb_get_report(intf, 3, 2, rep_data, 2);
	} while (rep_data[1] != 2 && limit++ < 5);

	usb_set_intfdata(intf, wacom);
	return 0;

fail2:	usb_buffer_free(dev, 10, wacom_wac->data, wacom->data_dma);
fail1:	input_free_device(input_dev);
	kfree(wacom);
	kfree(wacom_wac);
	return -ENOMEM;
}

static void wacom_disconnect(struct usb_interface *intf)
{
	struct wacom *wacom = usb_get_intfdata (intf);

	usb_set_intfdata(intf, NULL);
	if (wacom) {
		usb_kill_urb(wacom->irq);
		input_unregister_device(wacom->dev);
		usb_free_urb(wacom->irq);
		usb_buffer_free(interface_to_usbdev(intf), 10, wacom->wacom_wac->data, wacom->data_dma);
		kfree(wacom);
		kfree(wacom->wacom_wac);
	}
}

static struct usb_driver wacom_driver = {
	.name =		"wacom",
	.probe =	wacom_probe,
	.disconnect =	wacom_disconnect,
};

static int __init wacom_init(void)
{
	int result;
	wacom_driver.id_table = get_device_table();
	result = usb_register(&wacom_driver);
	if (result == 0)
		info(DRIVER_VERSION ":" DRIVER_DESC);
	return result;
}

static void __exit wacom_exit(void)
{
	usb_deregister(&wacom_driver);
}

module_init(wacom_init);
module_exit(wacom_exit);
Commit	Line	Data
3bea733a PC	1	/*
	2	* drivers/usb/input/wacom_sys.c
	3	*
	4	* USB Wacom Graphire and Wacom Intuos tablet support - system specific code
	5	*/
	6
	7	/*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*/
	13
	14	#include "wacom.h"
	15	#include "wacom_wac.h"
	16
	17	#define USB_REQ_GET_REPORT 0x01
	18	#define USB_REQ_SET_REPORT 0x09
	19
	20	static int usb_get_report(struct usb_interface *intf, unsigned char type,
	21	unsigned char id, void *buf, int size)
	22	{
	23	return usb_control_msg(interface_to_usbdev(intf),
	24	usb_rcvctrlpipe(interface_to_usbdev(intf), 0),
	25	USB_REQ_GET_REPORT, USB_TYPE_CLASS \| USB_RECIP_INTERFACE,
	26	(type << 8) + id, intf->altsetting[0].desc.bInterfaceNumber,
	27	buf, size, 100);
	28	}
	29
	30	static int usb_set_report(struct usb_interface *intf, unsigned char type,
	31	unsigned char id, void *buf, int size)
	32	{
	33	return usb_control_msg(interface_to_usbdev(intf),
	34	usb_sndctrlpipe(interface_to_usbdev(intf), 0),
	35	USB_REQ_SET_REPORT, USB_TYPE_CLASS \| USB_RECIP_INTERFACE,
	36	(type << 8) + id, intf->altsetting[0].desc.bInterfaceNumber,
	37	buf, size, 1000);
	38	}
	39
	40	static struct input_dev * get_input_dev(struct wacom_combo *wcombo)
	41	{
	42	return wcombo->wacom->dev;
	43	}
	44
	45	void wacom_sys_irq(struct urb urb, struct pt_regs regs)
	46	{
	47	struct wacom *wacom = urb->context;
	48	struct wacom_combo wcombo;
	49	int retval;
	50
	51	switch (urb->status) {
	52	case 0:
	53	/* success */
	54	break;
	55	case -ECONNRESET:
	56	case -ENOENT:
	57	case -ESHUTDOWN:
	58	/* this urb is terminated, clean up */
	59	dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
	60	return;
	61	default:
	62	dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
	63	goto exit;
	64	}
65
66	wcombo.wacom = wacom;
67	wcombo.urb = urb;
68	wcombo.regs = regs;
69
70	if (wacom_wac_irq(wacom->wacom_wac, (void *)&wcombo))
71	input_sync(get_input_dev(&wcombo));
72
73	exit:
74	retval = usb_submit_urb (urb, GFP_ATOMIC);
75	if (retval)
76	err ("%s - usb_submit_urb failed with result %d",
77	__FUNCTION__, retval);
78	}
79
80	void wacom_report_key(void *wcombo, unsigned int key_type, int key_data)
81	{
82	input_report_key(get_input_dev((struct wacom_combo *)wcombo), key_type, key_data);
83	return;
84	}
85
86	void wacom_report_abs(void *wcombo, unsigned int abs_type, int abs_data)
87	{
88	input_report_abs(get_input_dev((struct wacom_combo *)wcombo), abs_type, abs_data);
89	return;
90	}
91
92	void wacom_report_rel(void *wcombo, unsigned int rel_type, int rel_data)
93	{
94	input_report_rel(get_input_dev((struct wacom_combo *)wcombo), rel_type, rel_data);
95	return;
96	}
97
98	void wacom_input_event(void *wcombo, unsigned int type, unsigned int code, int value)
99	{
100	input_event(get_input_dev((struct wacom_combo *)wcombo), type, code, value);
101	return;
102	}
103
104	__u16 wacom_be16_to_cpu(unsigned char *data)
105	{
106	__u16 value;
107	value = be16_to_cpu((__be16 ) data);
108	return value;
109	}
110
111	__u16 wacom_le16_to_cpu(unsigned char *data)
112	{
113	__u16 value;
114	value = be16_to_cpu((__be16 ) data);
115	return value;
116	}
117
118	void wacom_input_regs(void *wcombo)
119	{
120	input_regs(get_input_dev((struct wacom_combo )wcombo), ((struct wacom_combo )wcombo)->regs);
121	return;
122	}
123
124	void wacom_input_sync(void *wcombo)
125	{
126	input_sync(get_input_dev((struct wacom_combo *)wcombo));
127	return;
128	}
129
130	static int wacom_open(struct input_dev *dev)
131	{
132	struct wacom *wacom = dev->private;
133
134	wacom->irq->dev = wacom->usbdev;
135	if (usb_submit_urb(wacom->irq, GFP_KERNEL))
136	return -EIO;
137
138	return 0;
139	}
140
141	static void wacom_close(struct input_dev *dev)
142	{
143	struct wacom *wacom = dev->private;
144
145	usb_kill_urb(wacom->irq);
146	}
147
148	void input_dev_g4(struct input_dev input_dev, struct wacom_wac wacom_wac)
149	{
150	input_dev->evbit[0] \|= BIT(EV_MSC);
151	input_dev->mscbit[0] \|= BIT(MSC_SERIAL);
152	input_dev->keybit[LONG(BTN_DIGI)] \|= BIT(BTN_TOOL_FINGER);
153	input_dev->keybit[LONG(BTN_LEFT)] \|= BIT(BTN_0) \| BIT(BTN_1) \| BIT(BTN_2) \| BIT(BTN_3) \| BIT(BTN_4) \| BIT(BTN_5) \| BIT(BTN_6) \| BIT(BTN_7);
154	}
155
156	void input_dev_g(struct input_dev input_dev, struct wacom_wac wacom_wac)
157	{
158	input_dev->evbit[0] \|= BIT(EV_REL);
159	input_dev->relbit[0] \|= BIT(REL_WHEEL);
160	input_dev->keybit[LONG(BTN_LEFT)] \|= BIT(BTN_LEFT) \| BIT(BTN_RIGHT) \| BIT(BTN_MIDDLE);
161	input_dev->keybit[LONG(BTN_DIGI)] \|= BIT(BTN_TOOL_RUBBER) \| BIT(BTN_TOOL_MOUSE) \| BIT(BTN_STYLUS2);
162	input_set_abs_params(input_dev, ABS_DISTANCE, 0, wacom_wac->features->distance_max, 0, 0);
163	}
164
165	void input_dev_i3(struct input_dev input_dev, struct wacom_wac wacom_wac)
166	{
167	input_dev->keybit[LONG(BTN_DIGI)] \|= BIT(BTN_TOOL_FINGER);
168	input_dev->keybit[LONG(BTN_LEFT)] \|= BIT(BTN_0) \| BIT(BTN_1) \| BIT(BTN_2) \| BIT(BTN_3) \| BIT(BTN_4) \| BIT(BTN_5) \| BIT(BTN_6) \| BIT(BTN_7);
169	input_set_abs_params(input_dev, ABS_RX, 0, 4097, 0, 0);
170	input_set_abs_params(input_dev, ABS_RY, 0, 4097, 0, 0);
171	}
172
173	void input_dev_i(struct input_dev input_dev, struct wacom_wac wacom_wac)
174	{
175	input_dev->evbit[0] \|= BIT(EV_MSC) \| BIT(EV_REL);
176	input_dev->mscbit[0] \|= BIT(MSC_SERIAL);
177	input_dev->relbit[0] \|= BIT(REL_WHEEL);
178	input_dev->keybit[LONG(BTN_LEFT)] \|= BIT(BTN_LEFT) \| BIT(BTN_RIGHT) \| BIT(BTN_MIDDLE) \| BIT(BTN_SIDE) \| BIT(BTN_EXTRA);
179	input_dev->keybit[LONG(BTN_DIGI)] \|= BIT(BTN_TOOL_RUBBER) \| BIT(BTN_TOOL_MOUSE) \| BIT(BTN_TOOL_BRUSH)
180	\| BIT(BTN_TOOL_PENCIL) \| BIT(BTN_TOOL_AIRBRUSH) \| BIT(BTN_TOOL_LENS) \| BIT(BTN_STYLUS2);
181	input_set_abs_params(input_dev, ABS_DISTANCE, 0, wacom_wac->features->distance_max, 0, 0);
182	input_set_abs_params(input_dev, ABS_WHEEL, 0, 1023, 0, 0);
183	input_set_abs_params(input_dev, ABS_TILT_X, 0, 127, 0, 0);
184	input_set_abs_params(input_dev, ABS_TILT_Y, 0, 127, 0, 0);
185	input_set_abs_params(input_dev, ABS_RZ, -900, 899, 0, 0);
186	input_set_abs_params(input_dev, ABS_THROTTLE, -1023, 1023, 0, 0);
187	}
188
189	void input_dev_pl(struct input_dev input_dev, struct wacom_wac wacom_wac)
190	{
191	input_dev->keybit[LONG(BTN_DIGI)] \|= BIT(BTN_STYLUS2) \| BIT(BTN_TOOL_RUBBER);
192	}
193
194	void input_dev_pt(struct input_dev input_dev, struct wacom_wac wacom_wac)
195	{
196	input_dev->keybit[LONG(BTN_DIGI)] \|= BIT(BTN_TOOL_RUBBER);
197	}
198
199	static int wacom_probe(struct usb_interface intf, const struct usb_device_id id)
200	{
201	struct usb_device *dev = interface_to_usbdev(intf);
202	struct usb_endpoint_descriptor *endpoint;
203	struct wacom *wacom;
204	struct wacom_wac *wacom_wac;
205	struct input_dev *input_dev;
206	char rep_data[2], limit = 0;
207
208	wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
209	wacom_wac = kzalloc(sizeof(struct wacom_wac), GFP_KERNEL);
210	input_dev = input_allocate_device();
211	if (!wacom \|\| !input_dev \|\| !wacom_wac)
212	goto fail1;
213
214	wacom_wac->data = usb_buffer_alloc(dev, 10, GFP_KERNEL, &wacom->data_dma);
215	if (!wacom_wac->data)
216	goto fail1;
217
218	wacom->irq = usb_alloc_urb(0, GFP_KERNEL);
219	if (!wacom->irq)
220	goto fail2;
221
222	wacom->usbdev = dev;
223	wacom->dev = input_dev;
224	usb_make_path(dev, wacom->phys, sizeof(wacom->phys));
225	strlcat(wacom->phys, "/input0", sizeof(wacom->phys));
226
227	wacom_wac->features = get_wacom_feature(id);
228	if (wacom_wac->features->pktlen > 10)
229	BUG();
230
231	input_dev->name = wacom_wac->features->name;
232	wacom->wacom_wac = wacom_wac;
233	usb_to_input_id(dev, &input_dev->id);
234
235	input_dev->cdev.dev = &intf->dev;
236	input_dev->private = wacom;
237	input_dev->open = wacom_open;
238	input_dev->close = wacom_close;
239
240	input_dev->evbit[0] \|= BIT(EV_KEY) \| BIT(EV_ABS);
241	input_dev->keybit[LONG(BTN_DIGI)] \|= BIT(BTN_TOOL_PEN) \| BIT(BTN_TOUCH) \| BIT(BTN_STYLUS);
242	input_set_abs_params(input_dev, ABS_X, 0, wacom_wac->features->x_max, 4, 0);
243	input_set_abs_params(input_dev, ABS_Y, 0, wacom_wac->features->y_max, 4, 0);
244	input_set_abs_params(input_dev, ABS_PRESSURE, 0, wacom_wac->features->pressure_max, 0, 0);
245	input_dev->absbit[LONG(ABS_MISC)] \|= BIT(ABS_MISC);
246
247	wacom_init_input_dev(input_dev, wacom_wac);
248
249	endpoint = &intf->cur_altsetting->endpoint[0].desc;
250
251	usb_fill_int_urb(wacom->irq, dev,
252	usb_rcvintpipe(dev, endpoint->bEndpointAddress),
253	wacom_wac->data, wacom_wac->features->pktlen,
254	wacom_wac->features->irq, wacom, endpoint->bInterval);
255	wacom->irq->transfer_dma = wacom->data_dma;
256	wacom->irq->transfer_flags \|= URB_NO_TRANSFER_DMA_MAP;
257
258	input_register_device(wacom->dev);
259
260	/* Ask the tablet to report tablet data. Repeat until it succeeds */
261	do {
262	rep_data[0] = 2;
263	rep_data[1] = 2;
264	usb_set_report(intf, 3, 2, rep_data, 2);
265	usb_get_report(intf, 3, 2, rep_data, 2);
266	} while (rep_data[1] != 2 && limit++ < 5);
267
268	usb_set_intfdata(intf, wacom);
269	return 0;
270
271	fail2: usb_buffer_free(dev, 10, wacom_wac->data, wacom->data_dma);
272	fail1: input_free_device(input_dev);
273	kfree(wacom);
274	kfree(wacom_wac);
275	return -ENOMEM;
276	}
277
278	static void wacom_disconnect(struct usb_interface *intf)
279	{
280	struct wacom *wacom = usb_get_intfdata (intf);
281
282	usb_set_intfdata(intf, NULL);
283	if (wacom) {
284	usb_kill_urb(wacom->irq);
285	input_unregister_device(wacom->dev);
286	usb_free_urb(wacom->irq);
287	usb_buffer_free(interface_to_usbdev(intf), 10, wacom->wacom_wac->data, wacom->data_dma);
288	kfree(wacom);
289	kfree(wacom->wacom_wac);
290	}
291	}
292
293	static struct usb_driver wacom_driver = {
294	.name = "wacom",
295	.probe = wacom_probe,
296	.disconnect = wacom_disconnect,
297	};
298
299	static int __init wacom_init(void)
300	{
301	int result;
302	wacom_driver.id_table = get_device_table();
303	result = usb_register(&wacom_driver);
304	if (result == 0)
305	info(DRIVER_VERSION ":" DRIVER_DESC);
306	return result;
307	}
308
309	static void __exit wacom_exit(void)
310	{
311	usb_deregister(&wacom_driver);
312	}
313
314	module_init(wacom_init);
315	module_exit(wacom_exit);