[linux-2.6-block.git] / drivers / input / tablet / wacom_sys.c

/*
 * 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"

/* defines to get HID report descriptor */
#define HID_DEVICET_HID		(USB_TYPE_CLASS | 0x01)
#define HID_DEVICET_REPORT	(USB_TYPE_CLASS | 0x02)
#define HID_USAGE_UNDEFINED		0x00
#define HID_USAGE_PAGE			0x05
#define HID_USAGE_PAGE_DIGITIZER	0x0d
#define HID_USAGE_PAGE_DESKTOP		0x01
#define HID_USAGE			0x09
#define HID_USAGE_X			0x30
#define HID_USAGE_Y			0x31
#define HID_USAGE_X_TILT		0x3d
#define HID_USAGE_Y_TILT		0x3e
#define HID_USAGE_FINGER		0x22
#define HID_USAGE_STYLUS		0x20
#define HID_COLLECTION			0xc0

enum {
	WCM_UNDEFINED = 0,
	WCM_DESKTOP,
	WCM_DIGITIZER,
};

struct hid_descriptor {
	struct usb_descriptor_header header;
	__le16   bcdHID;
	u8       bCountryCode;
	u8       bNumDescriptors;
	u8       bDescriptorType;
	__le16   wDescriptorLength;
} __attribute__ ((packed));

/* defines to get/set USB message */
#define USB_REQ_GET_REPORT	0x01
#define USB_REQ_SET_REPORT	0x09
#define WAC_HID_FEATURE_REPORT	0x03

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);
}

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);
}

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);
}

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);
}

__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));
}

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_MISC)] |= 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_MISC)] |= 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_MOUSE)] |= 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_MISC)] |= 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_MISC)] |= 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_MISC)] |= 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_MOUSE)] |= 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);
}

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_parse_hid(struct usb_interface *intf, struct hid_descriptor *hid_desc,
			   struct wacom_wac *wacom_wac)
{
	struct usb_device *dev = interface_to_usbdev(intf);
	struct wacom_features *features = wacom_wac->features;
	char limit = 0, result = 0;
	int i = 0, usage = WCM_UNDEFINED, finger = 0, pen = 0;
	unsigned char *report;

	report = kzalloc(hid_desc->wDescriptorLength, GFP_KERNEL);
	if (!report)
		return -ENOMEM;

	/* retrive report descriptors */
	do {
		result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
			USB_REQ_GET_DESCRIPTOR,
			USB_RECIP_INTERFACE | USB_DIR_IN,
			HID_DEVICET_REPORT << 8,
			intf->altsetting[0].desc.bInterfaceNumber, /* interface */
			report,
			hid_desc->wDescriptorLength,
			5000); /* 5 secs */
	} while (result < 0 && limit++ < 5);

	if (result < 0)
		goto out;

	for (i = 0; i < hid_desc->wDescriptorLength; i++) {

		switch (report[i]) {
		case HID_USAGE_PAGE:
			switch (report[i + 1]) {
			case HID_USAGE_PAGE_DIGITIZER:
				usage = WCM_DIGITIZER;
				i++;
				break;

			case HID_USAGE_PAGE_DESKTOP:
				usage = WCM_DESKTOP;
				i++;
				break;
			}
			break;

		case HID_USAGE:
			switch (report[i + 1]) {
			case HID_USAGE_X:
				if (usage == WCM_DESKTOP) {
					if (finger) {
						features->touch_x_max =
							features->touch_y_max =
							wacom_le16_to_cpu(&report[i + 3]);
						features->x_max =
							wacom_le16_to_cpu(&report[i + 6]);
						i += 7;
					} else if (pen) {
						features->x_max =
							wacom_le16_to_cpu(&report[i + 3]);
						i += 4;
					}
				} else if (usage == WCM_DIGITIZER) {
					/* max pressure isn't reported
					features->pressure_max = (unsigned short)
							(report[i+4] << 8  | report[i + 3]);
					*/
					features->pressure_max = 255;
					i += 4;
				}
				break;

			case HID_USAGE_Y:
				if (usage == WCM_DESKTOP)
					features->y_max =
						wacom_le16_to_cpu(&report[i + 3]);
				i += 4;
				break;

			case HID_USAGE_FINGER:
				finger = 1;
				i++;
				break;

			case HID_USAGE_STYLUS:
				pen = 1;
				i++;
				break;

			case HID_USAGE_UNDEFINED:
				if (usage == WCM_DESKTOP && finger) /* capacity */
					features->pressure_max =
						wacom_le16_to_cpu(&report[i + 3]);
				i += 4;
				break;
			}
			break;

		case HID_COLLECTION:
			/* reset UsagePage ans Finger */
			finger = usage = 0;
			break;
		}
	}

	result = 0;

 out:
	kfree(report);
	return result;
}

static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
	struct usb_device *dev = interface_to_usbdev(intf);
	struct usb_host_interface *interface = intf->cur_altsetting;
	struct usb_endpoint_descriptor *endpoint;
	struct wacom *wacom;
	struct wacom_wac *wacom_wac;
	struct wacom_features *features;
	struct input_dev *input_dev;
	int error = -ENOMEM;
	char rep_data[2], limit = 0;
	struct hid_descriptor *hid_desc;

	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 = features = get_wacom_feature(id);
	BUG_ON(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;

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

	/* TabletPC need to retrieve the physical and logical maximum from report descriptor */
	if (wacom_wac->features->type == TABLETPC) {
		if (usb_get_extra_descriptor(interface, HID_DEVICET_HID, &hid_desc)) {
			if (usb_get_extra_descriptor(&interface->endpoint[0],
						     HID_DEVICET_REPORT, &hid_desc)) {
				printk("wacom: can not retrive extra class descriptor\n");
				goto fail2;
			}
		}
		error = wacom_parse_hid(intf, hid_desc, wacom_wac);
		if (error)
			goto fail2;
	}

	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, features->x_max, 4, 0);
	input_set_abs_params(input_dev, ABS_Y, 0, features->y_max, 4, 0);
	input_set_abs_params(input_dev, ABS_PRESSURE, 0, features->pressure_max, 0, 0);
	if (features->type == TABLETPC) {
		input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_DOUBLETAP);
		input_set_abs_params(input_dev, ABS_RX, 0, features->touch_x_max, 4, 0);
		input_set_abs_params(input_dev, ABS_RY, 0, features->touch_y_max, 4, 0);
	}
	input_dev->absbit[BIT_WORD(ABS_MISC)] |= BIT_MASK(ABS_MISC);

	wacom_init_input_dev(input_dev, wacom_wac);

	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 if it is not a Tablet PC.
	 * Repeat until it succeeds
	 */
	if (wacom_wac->features->type != TABLETPC) {
		do {
			rep_data[0] = 2;
			rep_data[1] = 2;
			error = usb_set_report(intf, WAC_HID_FEATURE_REPORT,
						2, rep_data, 2);
			if (error >= 0)
				error = usb_get_report(intf,
						WAC_HID_FEATURE_REPORT, 2,
						rep_data, 2);
		} while ((error < 0 || 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)
		printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
		       DRIVER_DESC "\n");
	return result;
}

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

module_init(wacom_init);
module_exit(wacom_exit);
Commit	Line	Data
3bea733a	1	/*
4104d13f	2	* drivers/input/tablet/wacom_sys.c
3bea733a PC	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
545f4e99 PC	17	/* defines to get HID report descriptor */
	18	#define HID_DEVICET_HID (USB_TYPE_CLASS \| 0x01)
	19	#define HID_DEVICET_REPORT (USB_TYPE_CLASS \| 0x02)
	20	#define HID_USAGE_UNDEFINED 0x00
	21	#define HID_USAGE_PAGE 0x05
	22	#define HID_USAGE_PAGE_DIGITIZER 0x0d
	23	#define HID_USAGE_PAGE_DESKTOP 0x01
	24	#define HID_USAGE 0x09
	25	#define HID_USAGE_X 0x30
	26	#define HID_USAGE_Y 0x31
	27	#define HID_USAGE_X_TILT 0x3d
	28	#define HID_USAGE_Y_TILT 0x3e
	29	#define HID_USAGE_FINGER 0x22
	30	#define HID_USAGE_STYLUS 0x20
	31	#define HID_COLLECTION 0xc0
	32
	33	enum {
	34	WCM_UNDEFINED = 0,
	35	WCM_DESKTOP,
	36	WCM_DIGITIZER,
	37	};
	38
	39	struct hid_descriptor {
	40	struct usb_descriptor_header header;
	41	__le16 bcdHID;
	42	u8 bCountryCode;
	43	u8 bNumDescriptors;
	44	u8 bDescriptorType;
	45	__le16 wDescriptorLength;
	46	} __attribute__ ((packed));
	47
	48	/* defines to get/set USB message */
3bea733a PC	49	#define USB_REQ_GET_REPORT 0x01
3bea733a PC	50	#define USB_REQ_SET_REPORT 0x09
545f4e99	51	#define WAC_HID_FEATURE_REPORT 0x03
3bea733a PC	52
	53	static int usb_get_report(struct usb_interface *intf, unsigned char type,
	54	unsigned char id, void *buf, int size)
	55	{
	56	return usb_control_msg(interface_to_usbdev(intf),
	57	usb_rcvctrlpipe(interface_to_usbdev(intf), 0),
	58	USB_REQ_GET_REPORT, USB_TYPE_CLASS \| USB_RECIP_INTERFACE,
	59	(type << 8) + id, intf->altsetting[0].desc.bInterfaceNumber,
	60	buf, size, 100);
	61	}
	62
	63	static int usb_set_report(struct usb_interface *intf, unsigned char type,
	64	unsigned char id, void *buf, int size)
	65	{
	66	return usb_control_msg(interface_to_usbdev(intf),
	67	usb_sndctrlpipe(interface_to_usbdev(intf), 0),
	68	USB_REQ_SET_REPORT, USB_TYPE_CLASS \| USB_RECIP_INTERFACE,
	69	(type << 8) + id, intf->altsetting[0].desc.bInterfaceNumber,
	70	buf, size, 1000);
	71	}
	72
	73	static struct input_dev * get_input_dev(struct wacom_combo *wcombo)
	74	{
	75	return wcombo->wacom->dev;
	76	}
	77
54c9b226	78	static void wacom_sys_irq(struct urb *urb)
3bea733a PC	79	{
	80	struct wacom *wacom = urb->context;
	81	struct wacom_combo wcombo;
	82	int retval;
	83
	84	switch (urb->status) {
	85	case 0:
	86	/* success */
	87	break;
	88	case -ECONNRESET:
	89	case -ENOENT:
	90	case -ESHUTDOWN:
	91	/* this urb is terminated, clean up */
ea3e6c59	92	dbg("%s - urb shutting down with status: %d", __func__, urb->status);
3bea733a PC	93	return;
3bea733a PC	94	default:
ea3e6c59	95	dbg("%s - nonzero urb status received: %d", __func__, urb->status);
3bea733a PC	96	goto exit;
	97	}
	98
	99	wcombo.wacom = wacom;
	100	wcombo.urb = urb;
3bea733a PC	101
	102	if (wacom_wac_irq(wacom->wacom_wac, (void *)&wcombo))
	103	input_sync(get_input_dev(&wcombo));
	104
	105	exit:
e7224094	106	usb_mark_last_busy(wacom->usbdev);
3bea733a PC	107	retval = usb_submit_urb (urb, GFP_ATOMIC);
	108	if (retval)
	109	err ("%s - usb_submit_urb failed with result %d",
ea3e6c59	110	__func__, retval);
3bea733a PC	111	}
	112
	113	void wacom_report_key(void *wcombo, unsigned int key_type, int key_data)
	114	{
	115	input_report_key(get_input_dev((struct wacom_combo *)wcombo), key_type, key_data);
3bea733a PC	116	}
	117
	118	void wacom_report_abs(void *wcombo, unsigned int abs_type, int abs_data)
	119	{
	120	input_report_abs(get_input_dev((struct wacom_combo *)wcombo), abs_type, abs_data);
3bea733a PC	121	}
	122
	123	void wacom_report_rel(void *wcombo, unsigned int rel_type, int rel_data)
	124	{
	125	input_report_rel(get_input_dev((struct wacom_combo *)wcombo), rel_type, rel_data);
3bea733a PC	126	}
	127
	128	void wacom_input_event(void *wcombo, unsigned int type, unsigned int code, int value)
	129	{
	130	input_event(get_input_dev((struct wacom_combo *)wcombo), type, code, value);
3bea733a PC	131	}
	132
	133	__u16 wacom_be16_to_cpu(unsigned char *data)
	134	{
	135	__u16 value;
	136	value = be16_to_cpu((__be16 ) data);
	137	return value;
	138	}
	139
	140	__u16 wacom_le16_to_cpu(unsigned char *data)
	141	{
	142	__u16 value;
8d32e3ae	143	value = le16_to_cpu((__le16 ) data);
3bea733a PC	144	return value;
	145	}
	146
3bea733a PC	147	void wacom_input_sync(void *wcombo)
	148	{
	149	input_sync(get_input_dev((struct wacom_combo *)wcombo));
3bea733a PC	150	}
	151
	152	static int wacom_open(struct input_dev *dev)
	153	{
7791bdae	154	struct wacom *wacom = input_get_drvdata(dev);
3bea733a	155
e7224094 ON	156	mutex_lock(&wacom->lock);
e7224094 ON	157
3bea733a	158	wacom->irq->dev = wacom->usbdev;
e7224094 ON	159
	160	if (usb_autopm_get_interface(wacom->intf) < 0) {
	161	mutex_unlock(&wacom->lock);
3bea733a	162	return -EIO;
e7224094 ON	163	}
	164
	165	if (usb_submit_urb(wacom->irq, GFP_KERNEL)) {
	166	usb_autopm_put_interface(wacom->intf);
	167	mutex_unlock(&wacom->lock);
	168	return -EIO;
	169	}
	170
	171	wacom->open = 1;
	172	wacom->intf->needs_remote_wakeup = 1;
3bea733a	173
e7224094	174	mutex_unlock(&wacom->lock);
3bea733a PC	175	return 0;
	176	}
	177
	178	static void wacom_close(struct input_dev *dev)
	179	{
7791bdae	180	struct wacom *wacom = input_get_drvdata(dev);
3bea733a	181
e7224094	182	mutex_lock(&wacom->lock);
3bea733a	183	usb_kill_urb(wacom->irq);
e7224094 ON	184	wacom->open = 0;
	185	wacom->intf->needs_remote_wakeup = 0;
	186	mutex_unlock(&wacom->lock);
3bea733a PC	187	}
3bea733a PC	188
7ecfbfd3 PC	189	void input_dev_mo(struct input_dev input_dev, struct wacom_wac wacom_wac)
7ecfbfd3 PC	190	{
545f4e99	191	input_dev->keybit[BIT_WORD(BTN_MISC)] \|= BIT_MASK(BTN_1) \|
7b19ada2	192	BIT_MASK(BTN_5);
7ecfbfd3 PC	193	input_set_abs_params(input_dev, ABS_WHEEL, 0, 71, 0, 0);
	194	}
	195
3bea733a PC	196	void input_dev_g4(struct input_dev input_dev, struct wacom_wac wacom_wac)
3bea733a PC	197	{
7b19ada2 JS	198	input_dev->evbit[0] \|= BIT_MASK(EV_MSC);
	199	input_dev->mscbit[0] \|= BIT_MASK(MSC_SERIAL);
	200	input_dev->keybit[BIT_WORD(BTN_DIGI)] \|= BIT_MASK(BTN_TOOL_FINGER);
545f4e99	201	input_dev->keybit[BIT_WORD(BTN_MISC)] \|= BIT_MASK(BTN_0) \|
7b19ada2	202	BIT_MASK(BTN_4);
3bea733a PC	203	}
	204
	205	void input_dev_g(struct input_dev input_dev, struct wacom_wac wacom_wac)
	206	{
7b19ada2 JS	207	input_dev->evbit[0] \|= BIT_MASK(EV_REL);
7b19ada2 JS	208	input_dev->relbit[0] \|= BIT_MASK(REL_WHEEL);
545f4e99	209	input_dev->keybit[BIT_WORD(BTN_MOUSE)] \|= BIT_MASK(BTN_LEFT) \|
7b19ada2 JS	210	BIT_MASK(BTN_RIGHT) \| BIT_MASK(BTN_MIDDLE);
	211	input_dev->keybit[BIT_WORD(BTN_DIGI)] \|= BIT_MASK(BTN_TOOL_RUBBER) \|
	212	BIT_MASK(BTN_TOOL_MOUSE) \| BIT_MASK(BTN_STYLUS2);
3bea733a PC	213	input_set_abs_params(input_dev, ABS_DISTANCE, 0, wacom_wac->features->distance_max, 0, 0);
	214	}
	215
8d32e3ae	216	void input_dev_i3s(struct input_dev input_dev, struct wacom_wac wacom_wac)
3bea733a	217	{
7b19ada2	218	input_dev->keybit[BIT_WORD(BTN_DIGI)] \|= BIT_MASK(BTN_TOOL_FINGER);
545f4e99	219	input_dev->keybit[BIT_WORD(BTN_MISC)] \|= BIT_MASK(BTN_0) \|
7b19ada2	220	BIT_MASK(BTN_1) \| BIT_MASK(BTN_2) \| BIT_MASK(BTN_3);
071e0a2a	221	input_set_abs_params(input_dev, ABS_RX, 0, 4096, 0, 0);
0e1763f5	222	input_set_abs_params(input_dev, ABS_Z, -900, 899, 0, 0);
8d32e3ae PC	223	}
	224
	225	void input_dev_i3(struct input_dev input_dev, struct wacom_wac wacom_wac)
	226	{
545f4e99	227	input_dev->keybit[BIT_WORD(BTN_MISC)] \|= BIT_MASK(BTN_4) \|
7b19ada2	228	BIT_MASK(BTN_5) \| BIT_MASK(BTN_6) \| BIT_MASK(BTN_7);
071e0a2a	229	input_set_abs_params(input_dev, ABS_RY, 0, 4096, 0, 0);
3bea733a PC	230	}
3bea733a PC	231
0e1763f5 PC	232	void input_dev_bee(struct input_dev input_dev, struct wacom_wac wacom_wac)
0e1763f5 PC	233	{
545f4e99	234	input_dev->keybit[BIT_WORD(BTN_MISC)] \|= BIT_MASK(BTN_8) \| BIT_MASK(BTN_9);
0e1763f5 PC	235	}
0e1763f5 PC	236
3bea733a PC	237	void input_dev_i(struct input_dev input_dev, struct wacom_wac wacom_wac)
3bea733a PC	238	{
7b19ada2 JS	239	input_dev->evbit[0] \|= BIT_MASK(EV_MSC) \| BIT_MASK(EV_REL);
	240	input_dev->mscbit[0] \|= BIT_MASK(MSC_SERIAL);
	241	input_dev->relbit[0] \|= BIT_MASK(REL_WHEEL);
545f4e99	242	input_dev->keybit[BIT_WORD(BTN_MOUSE)] \|= BIT_MASK(BTN_LEFT) \|
7b19ada2 JS	243	BIT_MASK(BTN_RIGHT) \| BIT_MASK(BTN_MIDDLE) \|
	244	BIT_MASK(BTN_SIDE) \| BIT_MASK(BTN_EXTRA);
	245	input_dev->keybit[BIT_WORD(BTN_DIGI)] \|= BIT_MASK(BTN_TOOL_RUBBER) \|
	246	BIT_MASK(BTN_TOOL_MOUSE) \| BIT_MASK(BTN_TOOL_BRUSH) \|
	247	BIT_MASK(BTN_TOOL_PENCIL) \| BIT_MASK(BTN_TOOL_AIRBRUSH) \|
	248	BIT_MASK(BTN_TOOL_LENS) \| BIT_MASK(BTN_STYLUS2);
3bea733a PC	249	input_set_abs_params(input_dev, ABS_DISTANCE, 0, wacom_wac->features->distance_max, 0, 0);
	250	input_set_abs_params(input_dev, ABS_WHEEL, 0, 1023, 0, 0);
	251	input_set_abs_params(input_dev, ABS_TILT_X, 0, 127, 0, 0);
	252	input_set_abs_params(input_dev, ABS_TILT_Y, 0, 127, 0, 0);
	253	input_set_abs_params(input_dev, ABS_RZ, -900, 899, 0, 0);
	254	input_set_abs_params(input_dev, ABS_THROTTLE, -1023, 1023, 0, 0);
	255	}
	256
	257	void input_dev_pl(struct input_dev input_dev, struct wacom_wac wacom_wac)
	258	{
545f4e99	259	input_dev->keybit[BIT_WORD(BTN_DIGI)] \|= BIT_MASK(BTN_STYLUS2);
3bea733a PC	260	}
	261
	262	void input_dev_pt(struct input_dev input_dev, struct wacom_wac wacom_wac)
	263	{
7b19ada2	264	input_dev->keybit[BIT_WORD(BTN_DIGI)] \|= BIT_MASK(BTN_TOOL_RUBBER);
3bea733a PC	265	}
3bea733a PC	266
545f4e99 PC	267	static int wacom_parse_hid(struct usb_interface intf, struct hid_descriptor hid_desc,
	268	struct wacom_wac *wacom_wac)
	269	{
	270	struct usb_device *dev = interface_to_usbdev(intf);
	271	struct wacom_features *features = wacom_wac->features;
	272	char limit = 0, result = 0;
	273	int i = 0, usage = WCM_UNDEFINED, finger = 0, pen = 0;
	274	unsigned char *report;
	275
	276	report = kzalloc(hid_desc->wDescriptorLength, GFP_KERNEL);
	277	if (!report)
	278	return -ENOMEM;
	279
	280	/* retrive report descriptors */
	281	do {
	282	result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
	283	USB_REQ_GET_DESCRIPTOR,
	284	USB_RECIP_INTERFACE \| USB_DIR_IN,
	285	HID_DEVICET_REPORT << 8,
	286	intf->altsetting[0].desc.bInterfaceNumber, /* interface */
	287	report,
	288	hid_desc->wDescriptorLength,
	289	5000); /* 5 secs */
	290	} while (result < 0 && limit++ < 5);
	291
	292	if (result < 0)
	293	goto out;
	294
	295	for (i = 0; i < hid_desc->wDescriptorLength; i++) {
	296
	297	switch (report[i]) {
	298	case HID_USAGE_PAGE:
	299	switch (report[i + 1]) {
	300	case HID_USAGE_PAGE_DIGITIZER:
	301	usage = WCM_DIGITIZER;
	302	i++;
	303	break;
	304
	305	case HID_USAGE_PAGE_DESKTOP:
	306	usage = WCM_DESKTOP;
	307	i++;
	308	break;
	309	}
	310	break;
	311
	312	case HID_USAGE:
	313	switch (report[i + 1]) {
	314	case HID_USAGE_X:
	315	if (usage == WCM_DESKTOP) {
	316	if (finger) {
	317	features->touch_x_max =
	318	features->touch_y_max =
	319	wacom_le16_to_cpu(&report[i + 3]);
	320	features->x_max =
	321	wacom_le16_to_cpu(&report[i + 6]);
	322	i += 7;
	323	} else if (pen) {
	324	features->x_max =
	325	wacom_le16_to_cpu(&report[i + 3]);
	326	i += 4;
	327	}
	328	} else if (usage == WCM_DIGITIZER) {
	329	/* max pressure isn't reported
	330	features->pressure_max = (unsigned short)
331	(report[i+4] << 8 \| report[i + 3]);
332	*/
333	features->pressure_max = 255;
334	i += 4;
335	}
336	break;
337
338	case HID_USAGE_Y:
339	if (usage == WCM_DESKTOP)
340	features->y_max =
341	wacom_le16_to_cpu(&report[i + 3]);
342	i += 4;
343	break;
344
345	case HID_USAGE_FINGER:
346	finger = 1;
347	i++;
348	break;
349
350	case HID_USAGE_STYLUS:
351	pen = 1;
352	i++;
353	break;
354
355	case HID_USAGE_UNDEFINED:
356	if (usage == WCM_DESKTOP && finger) /* capacity */
357	features->pressure_max =
358	wacom_le16_to_cpu(&report[i + 3]);
359	i += 4;
360	break;
361	}
362	break;
363
364	case HID_COLLECTION:
365	/* reset UsagePage ans Finger */
366	finger = usage = 0;
367	break;
368	}
369	}
370
371	result = 0;
372
373	out:
374	kfree(report);
375	return result;
376	}
377
3bea733a PC	378	static int wacom_probe(struct usb_interface intf, const struct usb_device_id id)
	379	{
	380	struct usb_device *dev = interface_to_usbdev(intf);
545f4e99	381	struct usb_host_interface *interface = intf->cur_altsetting;
3bea733a PC	382	struct usb_endpoint_descriptor *endpoint;
	383	struct wacom *wacom;
	384	struct wacom_wac *wacom_wac;
545f4e99	385	struct wacom_features *features;
3bea733a	386	struct input_dev *input_dev;
5014186d	387	int error = -ENOMEM;
3bea733a	388	char rep_data[2], limit = 0;
545f4e99	389	struct hid_descriptor *hid_desc;
3bea733a PC	390
	391	wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
	392	wacom_wac = kzalloc(sizeof(struct wacom_wac), GFP_KERNEL);
	393	input_dev = input_allocate_device();
	394	if (!wacom \|\| !input_dev \|\| !wacom_wac)
	395	goto fail1;
	396
	397	wacom_wac->data = usb_buffer_alloc(dev, 10, GFP_KERNEL, &wacom->data_dma);
	398	if (!wacom_wac->data)
	399	goto fail1;
	400
	401	wacom->irq = usb_alloc_urb(0, GFP_KERNEL);
	402	if (!wacom->irq)
	403	goto fail2;
	404
	405	wacom->usbdev = dev;
	406	wacom->dev = input_dev;
e7224094 ON	407	wacom->intf = intf;
e7224094 ON	408	mutex_init(&wacom->lock);
3bea733a PC	409	usb_make_path(dev, wacom->phys, sizeof(wacom->phys));
	410	strlcat(wacom->phys, "/input0", sizeof(wacom->phys));
	411
545f4e99 PC	412	wacom_wac->features = features = get_wacom_feature(id);
545f4e99 PC	413	BUG_ON(features->pktlen > 10);
3bea733a PC	414
	415	input_dev->name = wacom_wac->features->name;
	416	wacom->wacom_wac = wacom_wac;
	417	usb_to_input_id(dev, &input_dev->id);
	418
c0f82d57	419	input_dev->dev.parent = &intf->dev;
7791bdae DT	420
	421	input_set_drvdata(input_dev, wacom);
	422
3bea733a PC	423	input_dev->open = wacom_open;
	424	input_dev->close = wacom_close;
	425
545f4e99 PC	426	endpoint = &intf->cur_altsetting->endpoint[0].desc;
	427
	428	/* TabletPC need to retrieve the physical and logical maximum from report descriptor */
	429	if (wacom_wac->features->type == TABLETPC) {
	430	if (usb_get_extra_descriptor(interface, HID_DEVICET_HID, &hid_desc)) {
	431	if (usb_get_extra_descriptor(&interface->endpoint[0],
	432	HID_DEVICET_REPORT, &hid_desc)) {
	433	printk("wacom: can not retrive extra class descriptor\n");
	434	goto fail2;
	435	}
	436	}
	437	error = wacom_parse_hid(intf, hid_desc, wacom_wac);
	438	if (error)
	439	goto fail2;
	440	}
	441
7b19ada2 JS	442	input_dev->evbit[0] \|= BIT_MASK(EV_KEY) \| BIT_MASK(EV_ABS);
	443	input_dev->keybit[BIT_WORD(BTN_DIGI)] \|= BIT_MASK(BTN_TOOL_PEN) \|
	444	BIT_MASK(BTN_TOUCH) \| BIT_MASK(BTN_STYLUS);
545f4e99 PC	445	input_set_abs_params(input_dev, ABS_X, 0, features->x_max, 4, 0);
	446	input_set_abs_params(input_dev, ABS_Y, 0, features->y_max, 4, 0);
	447	input_set_abs_params(input_dev, ABS_PRESSURE, 0, features->pressure_max, 0, 0);
	448	if (features->type == TABLETPC) {
	449	input_dev->keybit[BIT_WORD(BTN_DIGI)] \|= BIT_MASK(BTN_TOOL_DOUBLETAP);
	450	input_set_abs_params(input_dev, ABS_RX, 0, features->touch_x_max, 4, 0);
	451	input_set_abs_params(input_dev, ABS_RY, 0, features->touch_y_max, 4, 0);
	452	}
7b19ada2	453	input_dev->absbit[BIT_WORD(ABS_MISC)] \|= BIT_MASK(ABS_MISC);
3bea733a PC	454
	455	wacom_init_input_dev(input_dev, wacom_wac);
	456
3bea733a PC	457	usb_fill_int_urb(wacom->irq, dev,
	458	usb_rcvintpipe(dev, endpoint->bEndpointAddress),
	459	wacom_wac->data, wacom_wac->features->pktlen,
8d32e3ae	460	wacom_sys_irq, wacom, endpoint->bInterval);
3bea733a PC	461	wacom->irq->transfer_dma = wacom->data_dma;
	462	wacom->irq->transfer_flags \|= URB_NO_TRANSFER_DMA_MAP;
	463
5014186d DT	464	error = input_register_device(wacom->dev);
	465	if (error)
	466	goto fail3;
3bea733a	467
545f4e99 PC	468	/*
	469	* Ask the tablet to report tablet data if it is not a Tablet PC.
	470	* Repeat until it succeeds
	471	*/
	472	if (wacom_wac->features->type != TABLETPC) {
	473	do {
	474	rep_data[0] = 2;
	475	rep_data[1] = 2;
	476	error = usb_set_report(intf, WAC_HID_FEATURE_REPORT,
	477	2, rep_data, 2);
	478	if (error >= 0)
	479	error = usb_get_report(intf,
	480	WAC_HID_FEATURE_REPORT, 2,
	481	rep_data, 2);
	482	} while ((error < 0 \|\| rep_data[1] != 2) && limit++ < 5);
	483	}
3bea733a PC	484
	485	usb_set_intfdata(intf, wacom);
	486	return 0;
	487
5014186d DT	488	fail3: usb_free_urb(wacom->irq);
	489	fail2: usb_buffer_free(dev, 10, wacom_wac->data, wacom->data_dma);
	490	fail1: input_free_device(input_dev);
3bea733a PC	491	kfree(wacom);
3bea733a PC	492	kfree(wacom_wac);
5014186d	493	return error;
3bea733a PC	494	}
	495
	496	static void wacom_disconnect(struct usb_interface *intf)
	497	{
e7224094	498	struct wacom *wacom = usb_get_intfdata(intf);
3bea733a PC	499
3bea733a PC	500	usb_set_intfdata(intf, NULL);
e7224094 ON	501
	502	usb_kill_urb(wacom->irq);
	503	input_unregister_device(wacom->dev);
	504	usb_free_urb(wacom->irq);
545f4e99 PC	505	usb_buffer_free(interface_to_usbdev(intf), 10,
545f4e99 PC	506	wacom->wacom_wac->data, wacom->data_dma);
e7224094 ON	507	kfree(wacom->wacom_wac);
	508	kfree(wacom);
	509	}
	510
	511	static int wacom_suspend(struct usb_interface *intf, pm_message_t message)
	512	{
	513	struct wacom *wacom = usb_get_intfdata(intf);
	514
	515	mutex_lock(&wacom->lock);
	516	usb_kill_urb(wacom->irq);
	517	mutex_unlock(&wacom->lock);
	518
	519	return 0;
	520	}
	521
	522	static int wacom_resume(struct usb_interface *intf)
	523	{
	524	struct wacom *wacom = usb_get_intfdata(intf);
	525	int rv;
	526
	527	mutex_lock(&wacom->lock);
	528	if (wacom->open)
	529	rv = usb_submit_urb(wacom->irq, GFP_NOIO);
	530	else
	531	rv = 0;
	532	mutex_unlock(&wacom->lock);
	533
	534	return rv;
	535	}
	536
	537	static int wacom_reset_resume(struct usb_interface *intf)
	538	{
	539	return wacom_resume(intf);
3bea733a PC	540	}
	541
	542	static struct usb_driver wacom_driver = {
	543	.name = "wacom",
	544	.probe = wacom_probe,
	545	.disconnect = wacom_disconnect,
e7224094 ON	546	.suspend = wacom_suspend,
	547	.resume = wacom_resume,
	548	.reset_resume = wacom_reset_resume,
	549	.supports_autosuspend = 1,
3bea733a PC	550	};
	551
	552	static int __init wacom_init(void)
	553	{
	554	int result;
	555	wacom_driver.id_table = get_device_table();
	556	result = usb_register(&wacom_driver);
	557	if (result == 0)
899ef6e7 GKH	558	printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
899ef6e7 GKH	559	DRIVER_DESC "\n");
3bea733a PC	560	return result;
	561	}
	562
	563	static void __exit wacom_exit(void)
	564	{
	565	usb_deregister(&wacom_driver);
	566	}
	567
	568	module_init(wacom_init);
	569	module_exit(wacom_exit);