drivers/input/tablet/wacom_sys.c - linux - Git at Google

 /*
  * drivers/input/tablet/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;
 }

 static void wacom_sys_irq(struct urb *urb)
 {
 	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", __func__, urb->status);
 		return;
 	default:
 		dbg("%s - nonzero urb status received: %d", __func__, urb->status);
 		goto exit;
 	}

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

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

  exit:
 	usb_mark_last_busy(wacom->usbdev);
 	retval = usb_submit_urb (urb, GFP_ATOMIC);
 	if (retval)
 		err ("%s - usb_submit_urb failed with result %d",
 		     __func__, 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 = le16_to_cpu(*(__le16 *) data);
 	return value;
 }

 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 = input_get_drvdata(dev);

 	mutex_lock(&wacom->lock);

 	wacom->irq->dev = wacom->usbdev;

 	if (usb_autopm_get_interface(wacom->intf) < 0) {
 		mutex_unlock(&wacom->lock);
 		return -EIO;
 	}

 	if (usb_submit_urb(wacom->irq, GFP_KERNEL)) {
 		usb_autopm_put_interface(wacom->intf);
 		mutex_unlock(&wacom->lock);
 		return -EIO;
 	}

 	wacom->open = 1;
 	wacom->intf->needs_remote_wakeup = 1;

 	mutex_unlock(&wacom->lock);
 	return 0;
 }

 static void wacom_close(struct input_dev *dev)
 {
 	struct wacom *wacom = input_get_drvdata(dev);

 	mutex_lock(&wacom->lock);
 	usb_kill_urb(wacom->irq);
 	wacom->open = 0;
 	wacom->intf->needs_remote_wakeup = 0;
 	mutex_unlock(&wacom->lock);
 }

 void input_dev_mo(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 {
 	input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_1) |
 		BIT_MASK(BTN_5);
 	input_set_abs_params(input_dev, ABS_WHEEL, 0, 71, 0, 0);
 }

 void input_dev_g4(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 {
 	input_dev->evbit[0] |= BIT_MASK(EV_MSC);
 	input_dev->mscbit[0] |= BIT_MASK(MSC_SERIAL);
 	input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_FINGER);
 	input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_0) |
 		BIT_MASK(BTN_4);
 }

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

 void input_dev_i3s(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 {
 	input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_FINGER);
 	input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_0) |
 		BIT_MASK(BTN_1) | BIT_MASK(BTN_2) | BIT_MASK(BTN_3);
 	input_set_abs_params(input_dev, ABS_RX, 0, 4096, 0, 0);
 	input_set_abs_params(input_dev, ABS_Z, -900, 899, 0, 0);
 }

 void input_dev_i3(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 {
 	input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_4) |
 		BIT_MASK(BTN_5) | BIT_MASK(BTN_6) | BIT_MASK(BTN_7);
 	input_set_abs_params(input_dev, ABS_RY, 0, 4096, 0, 0);
 }

 void input_dev_bee(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 {
 	input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_8) | BIT_MASK(BTN_9);
 }

 void input_dev_i(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 {
 	input_dev->evbit[0] |= BIT_MASK(EV_MSC) | BIT_MASK(EV_REL);
 	input_dev->mscbit[0] |= BIT_MASK(MSC_SERIAL);
 	input_dev->relbit[0] |= BIT_MASK(REL_WHEEL);
 	input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_LEFT) |
 		BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE) |
 		BIT_MASK(BTN_SIDE) | BIT_MASK(BTN_EXTRA);
 	input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_RUBBER) |
 		BIT_MASK(BTN_TOOL_MOUSE) | BIT_MASK(BTN_TOOL_BRUSH) |
 		BIT_MASK(BTN_TOOL_PENCIL) | BIT_MASK(BTN_TOOL_AIRBRUSH) |
 		BIT_MASK(BTN_TOOL_LENS) | BIT_MASK(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[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_STYLUS2) |
 		BIT_MASK(BTN_TOOL_RUBBER);
 }

 void input_dev_pt(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 {
 	input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(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;
 	int error = -ENOMEM;
 	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;
 	wacom->intf = intf;
 	mutex_init(&wacom->lock);
 	usb_make_path(dev, wacom->phys, sizeof(wacom->phys));
 	strlcat(wacom->phys, "/input0", sizeof(wacom->phys));

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

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

 	input_dev->dev.parent = &intf->dev;

 	input_set_drvdata(input_dev, wacom);

 	input_dev->open = wacom_open;
 	input_dev->close = wacom_close;

 	input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
 	input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_PEN) |
 		BIT_MASK(BTN_TOUCH) | BIT_MASK(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[BIT_WORD(ABS_MISC)] |= BIT_MASK(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_sys_irq, wacom, endpoint->bInterval);
 	wacom->irq->transfer_dma = wacom->data_dma;
 	wacom->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;

 	error = input_register_device(wacom->dev);
 	if (error)
 		goto fail3;

 	/* 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;

  fail3:	usb_free_urb(wacom->irq);
  fail2:	usb_buffer_free(dev, 10, wacom_wac->data, wacom->data_dma);
  fail1:	input_free_device(input_dev);
 	kfree(wacom);
 	kfree(wacom_wac);
 	return error;
 }

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

 	usb_set_intfdata(intf, NULL);

 	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->wacom_wac);
 	kfree(wacom);
 }

 static int wacom_suspend(struct usb_interface *intf, pm_message_t message)
 {
 	struct wacom *wacom = usb_get_intfdata(intf);

 	mutex_lock(&wacom->lock);
 	usb_kill_urb(wacom->irq);
 	mutex_unlock(&wacom->lock);

 	return 0;
 }

 static int wacom_resume(struct usb_interface *intf)
 {
 	struct wacom *wacom = usb_get_intfdata(intf);
 	int rv;

 	mutex_lock(&wacom->lock);
 	if (wacom->open)
 		rv = usb_submit_urb(wacom->irq, GFP_NOIO);
 	else
 		rv = 0;
 	mutex_unlock(&wacom->lock);

 	return rv;
 }

 static int wacom_reset_resume(struct usb_interface *intf)
 {
 	return wacom_resume(intf);
 }

 static struct usb_driver wacom_driver = {
 	.name =		"wacom",
 	.probe =	wacom_probe,
 	.disconnect =	wacom_disconnect,
 	.suspend =	wacom_suspend,
 	.resume =	wacom_resume,
 	.reset_resume =	wacom_reset_resume,
 	.supports_autosuspend = 1,
 };

 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);
	/*
	* drivers/input/tablet/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;
	}

	static void wacom_sys_irq(struct urb *urb)
	{
	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", __func__, urb->status);
	return;
	default:
	dbg("%s - nonzero urb status received: %d", __func__, urb->status);
	goto exit;
	}

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

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

	exit:
	usb_mark_last_busy(wacom->usbdev);
	retval = usb_submit_urb (urb, GFP_ATOMIC);
	if (retval)
	err ("%s - usb_submit_urb failed with result %d",
	__func__, 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 = le16_to_cpu((__le16 ) data);
	return value;
	}

	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 = input_get_drvdata(dev);

	mutex_lock(&wacom->lock);

	wacom->irq->dev = wacom->usbdev;

	if (usb_autopm_get_interface(wacom->intf) < 0) {
	mutex_unlock(&wacom->lock);
	return -EIO;
	}

	if (usb_submit_urb(wacom->irq, GFP_KERNEL)) {
	usb_autopm_put_interface(wacom->intf);
	mutex_unlock(&wacom->lock);
	return -EIO;
	}

	wacom->open = 1;
	wacom->intf->needs_remote_wakeup = 1;

	mutex_unlock(&wacom->lock);
	return 0;
	}

	static void wacom_close(struct input_dev *dev)
	{
	struct wacom *wacom = input_get_drvdata(dev);

	mutex_lock(&wacom->lock);
	usb_kill_urb(wacom->irq);
	wacom->open = 0;
	wacom->intf->needs_remote_wakeup = 0;
	mutex_unlock(&wacom->lock);
	}

	void input_dev_mo(struct input_dev input_dev, struct wacom_wac wacom_wac)
	{
	input_dev->keybit[BIT_WORD(BTN_LEFT)] \|= BIT_MASK(BTN_1) \|
	BIT_MASK(BTN_5);
	input_set_abs_params(input_dev, ABS_WHEEL, 0, 71, 0, 0);
	}

	void input_dev_g4(struct input_dev input_dev, struct wacom_wac wacom_wac)
	{
	input_dev->evbit[0] \|= BIT_MASK(EV_MSC);
	input_dev->mscbit[0] \|= BIT_MASK(MSC_SERIAL);
	input_dev->keybit[BIT_WORD(BTN_DIGI)] \|= BIT_MASK(BTN_TOOL_FINGER);
	input_dev->keybit[BIT_WORD(BTN_LEFT)] \|= BIT_MASK(BTN_0) \|
	BIT_MASK(BTN_4);
	}

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

	void input_dev_i3s(struct input_dev input_dev, struct wacom_wac wacom_wac)
	{
	input_dev->keybit[BIT_WORD(BTN_DIGI)] \|= BIT_MASK(BTN_TOOL_FINGER);
	input_dev->keybit[BIT_WORD(BTN_LEFT)] \|= BIT_MASK(BTN_0) \|
	BIT_MASK(BTN_1) \| BIT_MASK(BTN_2) \| BIT_MASK(BTN_3);
	input_set_abs_params(input_dev, ABS_RX, 0, 4096, 0, 0);
	input_set_abs_params(input_dev, ABS_Z, -900, 899, 0, 0);
	}

	void input_dev_i3(struct input_dev input_dev, struct wacom_wac wacom_wac)
	{
	input_dev->keybit[BIT_WORD(BTN_LEFT)] \|= BIT_MASK(BTN_4) \|
	BIT_MASK(BTN_5) \| BIT_MASK(BTN_6) \| BIT_MASK(BTN_7);
	input_set_abs_params(input_dev, ABS_RY, 0, 4096, 0, 0);
	}

	void input_dev_bee(struct input_dev input_dev, struct wacom_wac wacom_wac)
	{
	input_dev->keybit[BIT_WORD(BTN_LEFT)] \|= BIT_MASK(BTN_8) \| BIT_MASK(BTN_9);
	}

	void input_dev_i(struct input_dev input_dev, struct wacom_wac wacom_wac)
	{
	input_dev->evbit[0] \|= BIT_MASK(EV_MSC) \| BIT_MASK(EV_REL);
	input_dev->mscbit[0] \|= BIT_MASK(MSC_SERIAL);
	input_dev->relbit[0] \|= BIT_MASK(REL_WHEEL);
	input_dev->keybit[BIT_WORD(BTN_LEFT)] \|= BIT_MASK(BTN_LEFT) \|
	BIT_MASK(BTN_RIGHT) \| BIT_MASK(BTN_MIDDLE) \|
	BIT_MASK(BTN_SIDE) \| BIT_MASK(BTN_EXTRA);
	input_dev->keybit[BIT_WORD(BTN_DIGI)] \|= BIT_MASK(BTN_TOOL_RUBBER) \|
	BIT_MASK(BTN_TOOL_MOUSE) \| BIT_MASK(BTN_TOOL_BRUSH) \|
	BIT_MASK(BTN_TOOL_PENCIL) \| BIT_MASK(BTN_TOOL_AIRBRUSH) \|
	BIT_MASK(BTN_TOOL_LENS) \| BIT_MASK(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[BIT_WORD(BTN_DIGI)] \|= BIT_MASK(BTN_STYLUS2) \|
	BIT_MASK(BTN_TOOL_RUBBER);
	}

	void input_dev_pt(struct input_dev input_dev, struct wacom_wac wacom_wac)
	{
	input_dev->keybit[BIT_WORD(BTN_DIGI)] \|= BIT_MASK(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;
	int error = -ENOMEM;
	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;
	wacom->intf = intf;
	mutex_init(&wacom->lock);
	usb_make_path(dev, wacom->phys, sizeof(wacom->phys));
	strlcat(wacom->phys, "/input0", sizeof(wacom->phys));

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

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

	input_dev->dev.parent = &intf->dev;

	input_set_drvdata(input_dev, wacom);

	input_dev->open = wacom_open;
	input_dev->close = wacom_close;

	input_dev->evbit[0] \|= BIT_MASK(EV_KEY) \| BIT_MASK(EV_ABS);
	input_dev->keybit[BIT_WORD(BTN_DIGI)] \|= BIT_MASK(BTN_TOOL_PEN) \|
	BIT_MASK(BTN_TOUCH) \| BIT_MASK(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[BIT_WORD(ABS_MISC)] \|= BIT_MASK(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_sys_irq, wacom, endpoint->bInterval);
	wacom->irq->transfer_dma = wacom->data_dma;
	wacom->irq->transfer_flags \|= URB_NO_TRANSFER_DMA_MAP;

	error = input_register_device(wacom->dev);
	if (error)
	goto fail3;

	/* 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;

	fail3: usb_free_urb(wacom->irq);
	fail2: usb_buffer_free(dev, 10, wacom_wac->data, wacom->data_dma);
	fail1: input_free_device(input_dev);
	kfree(wacom);
	kfree(wacom_wac);
	return error;
	}

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

	usb_set_intfdata(intf, NULL);

	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->wacom_wac);
	kfree(wacom);
	}

	static int wacom_suspend(struct usb_interface *intf, pm_message_t message)
	{
	struct wacom *wacom = usb_get_intfdata(intf);

	mutex_lock(&wacom->lock);
	usb_kill_urb(wacom->irq);
	mutex_unlock(&wacom->lock);

	return 0;
	}

	static int wacom_resume(struct usb_interface *intf)
	{
	struct wacom *wacom = usb_get_intfdata(intf);
	int rv;

	mutex_lock(&wacom->lock);
	if (wacom->open)
	rv = usb_submit_urb(wacom->irq, GFP_NOIO);
	else
	rv = 0;
	mutex_unlock(&wacom->lock);

	return rv;
	}

	static int wacom_reset_resume(struct usb_interface *intf)
	{
	return wacom_resume(intf);
	}

	static struct usb_driver wacom_driver = {
	.name = "wacom",
	.probe = wacom_probe,
	.disconnect = wacom_disconnect,
	.suspend = wacom_suspend,
	.resume = wacom_resume,
	.reset_resume = wacom_reset_resume,
	.supports_autosuspend = 1,
	};

	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);