Merge branch 'wacom' into next

Merge large update to Wacom driver, converting it from USB to a HID
driver and unifying wired and bluetooth support, from Benjamin
Tissoires.

6 files changed, 0 insertions, 4319 deletions

diff --git a/drivers/input/tablet/Kconfig b/drivers/input/tablet/Kconfig
index a5121b09c63f..623bb9e0d5a4 100644
--- a/drivers/input/tablet/Kconfig
+++ b/drivers/input/tablet/Kconfig
@@ -73,22 +73,6 @@ config TABLET_USB_KBTAB
 	  To compile this driver as a module, choose M here: the
 	  module will be called kbtab.
 
-config TABLET_USB_WACOM
-	tristate "Wacom Intuos/Graphire tablet support (USB)"
-	depends on USB_ARCH_HAS_HCD
-	select POWER_SUPPLY
-	select USB
-	select NEW_LEDS
-	select LEDS_CLASS
-	help
-	  Say Y here if you want to use the USB version of the Wacom Intuos
-	  or Graphire tablet.  Make sure to say Y to "Mouse support"
-	  (CONFIG_INPUT_MOUSEDEV) and/or "Event interface support"
-	  (CONFIG_INPUT_EVDEV) as well.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called wacom.
-
 config TABLET_SERIAL_WACOM4
 	tristate "Wacom protocol 4 serial tablet support"
 	select SERIO
diff --git a/drivers/input/tablet/Makefile b/drivers/input/tablet/Makefile
index 4d9339fb3b63..2e130101cf3c 100644
--- a/drivers/input/tablet/Makefile
+++ b/drivers/input/tablet/Makefile
@@ -2,13 +2,10 @@
 # Makefile for the tablet drivers
 #
 
-# Multipart objects.
-wacom-objs	:= wacom_wac.o wacom_sys.o
 
 obj-$(CONFIG_TABLET_USB_ACECAD)	+= acecad.o
 obj-$(CONFIG_TABLET_USB_AIPTEK)	+= aiptek.o
 obj-$(CONFIG_TABLET_USB_GTCO)	+= gtco.o
 obj-$(CONFIG_TABLET_USB_HANWANG) += hanwang.o
 obj-$(CONFIG_TABLET_USB_KBTAB)	+= kbtab.o
-obj-$(CONFIG_TABLET_USB_WACOM)	+= wacom.o
 obj-$(CONFIG_TABLET_SERIAL_WACOM4) += wacom_serial4.o
diff --git a/drivers/input/tablet/wacom.h b/drivers/input/tablet/wacom.h
deleted file mode 100644
index 9ebf0ed3b3b3..000000000000
--- a/drivers/input/tablet/wacom.h
+++ /dev/null
@@ -1,139 +0,0 @@
-/*
- * drivers/input/tablet/wacom.h
- *
- *  USB Wacom tablet support
- *
- *  Copyright (c) 2000-2004 Vojtech Pavlik	<vojtech@ucw.cz>
- *  Copyright (c) 2000 Andreas Bach Aaen	<abach@stofanet.dk>
- *  Copyright (c) 2000 Clifford Wolf		<clifford@clifford.at>
- *  Copyright (c) 2000 Sam Mosel		<sam.mosel@computer.org>
- *  Copyright (c) 2000 James E. Blair		<corvus@gnu.org>
- *  Copyright (c) 2000 Daniel Egger		<egger@suse.de>
- *  Copyright (c) 2001 Frederic Lepied		<flepied@mandrakesoft.com>
- *  Copyright (c) 2004 Panagiotis Issaris	<panagiotis.issaris@mech.kuleuven.ac.be>
- *  Copyright (c) 2002-2011 Ping Cheng		<pingc@wacom.com>
- *
- *  ChangeLog:
- *      v0.1 (vp)  - Initial release
- *      v0.2 (aba) - Support for all buttons / combinations
- *      v0.3 (vp)  - Support for Intuos added
- *	v0.4 (sm)  - Support for more Intuos models, menustrip
- *			relative mode, proximity.
- *	v0.5 (vp)  - Big cleanup, nifty features removed,
- *			they belong in userspace
- *	v1.8 (vp)  - Submit URB only when operating, moved to CVS,
- *			use input_report_key instead of report_btn and
- *			other cleanups
- *	v1.11 (vp) - Add URB ->dev setting for new kernels
- *	v1.11 (jb) - Add support for the 4D Mouse & Lens
- *	v1.12 (de) - Add support for two more inking pen IDs
- *	v1.14 (vp) - Use new USB device id probing scheme.
- *		     Fix Wacom Graphire mouse wheel
- *	v1.18 (vp) - Fix mouse wheel direction
- *		     Make mouse relative
- *      v1.20 (fl) - Report tool id for Intuos devices
- *                 - Multi tools support
- *                 - Corrected Intuos protocol decoding (airbrush, 4D mouse, lens cursor...)
- *                 - Add PL models support
- *		   - Fix Wacom Graphire mouse wheel again
- *	v1.21 (vp) - Removed protocol descriptions
- *		   - Added MISC_SERIAL for tool serial numbers
- *	      (gb) - Identify version on module load.
- *    v1.21.1 (fl) - added Graphire2 support
- *    v1.21.2 (fl) - added Intuos2 support
- *                 - added all the PL ids
- *    v1.21.3 (fl) - added another eraser id from Neil Okamoto
- *                 - added smooth filter for Graphire from Peri Hankey
- *                 - added PenPartner support from Olaf van Es
- *                 - new tool ids from Ole Martin Bjoerndalen
- *	v1.29 (pc) - Add support for more tablets
- *		   - Fix pressure reporting
- *	v1.30 (vp) - Merge 2.4 and 2.5 drivers
- *		   - Since 2.5 now has input_sync(), remove MSC_SERIAL abuse
- *		   - Cleanups here and there
- *    v1.30.1 (pi) - Added Graphire3 support
- *	v1.40 (pc) - Add support for several new devices, fix eraser reporting, ...
- *	v1.43 (pc) - Added support for Cintiq 21UX
- *		   - Fixed a Graphire bug
- *		   - Merged wacom_intuos3_irq into wacom_intuos_irq
- *	v1.44 (pc) - Added support for Graphire4, Cintiq 710, Intuos3 6x11, etc.
- *		   - Report Device IDs
- *      v1.45 (pc) - Added support for DTF 521, Intuos3 12x12 and 12x19
- *                 - Minor data report fix
- *      v1.46 (pc) - Split wacom.c into wacom_sys.c and wacom_wac.c,
- *		   - where wacom_sys.c deals with system specific code,
- *		   - and wacom_wac.c deals with Wacom specific code
- *		   - Support Intuos3 4x6
- *      v1.47 (pc) - Added support for Bamboo
- *      v1.48 (pc) - Added support for Bamboo1, BambooFun, and Cintiq 12WX
- *      v1.49 (pc) - Added support for USB Tablet PC (0x90, 0x93, and 0x9A)
- *      v1.50 (pc) - Fixed a TabletPC touch bug in 2.6.28
- *      v1.51 (pc) - Added support for Intuos4
- *      v1.52 (pc) - Query Wacom data upon system resume
- *                 - add defines for features->type
- *                 - add new devices (0x9F, 0xE2, and 0XE3)
- */
-
-/*
- * 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.
- */
-#ifndef WACOM_H
-#define WACOM_H
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/mod_devicetable.h>
-#include <linux/usb/input.h>
-#include <linux/power_supply.h>
-#include <asm/unaligned.h>
-
-/*
- * Version Information
- */
-#define DRIVER_VERSION "v1.53"
-#define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>"
-#define DRIVER_DESC "USB Wacom tablet driver"
-#define DRIVER_LICENSE "GPL"
-
-MODULE_AUTHOR(DRIVER_AUTHOR);
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_LICENSE(DRIVER_LICENSE);
-
-#define USB_VENDOR_ID_WACOM	0x056a
-#define USB_VENDOR_ID_LENOVO	0x17ef
-
-struct wacom {
-	dma_addr_t data_dma;
-	struct usb_device *usbdev;
-	struct usb_interface *intf;
-	struct urb *irq;
-	struct wacom_wac wacom_wac;
-	struct mutex lock;
-	struct work_struct work;
-	bool open;
-	char phys[32];
-	struct wacom_led {
-		u8 select[2]; /* status led selector (0..3) */
-		u8 llv;       /* status led brightness no button (1..127) */
-		u8 hlv;       /* status led brightness button pressed (1..127) */
-		u8 img_lum;   /* OLED matrix display brightness */
-	} led;
-	struct power_supply battery;
-};
-
-static inline void wacom_schedule_work(struct wacom_wac *wacom_wac)
-{
-	struct wacom *wacom = container_of(wacom_wac, struct wacom, wacom_wac);
-	schedule_work(&wacom->work);
-}
-
-extern const struct usb_device_id wacom_ids[];
-
-void wacom_wac_irq(struct wacom_wac *wacom_wac, size_t len);
-void wacom_setup_device_quirks(struct wacom_features *features);
-int wacom_setup_input_capabilities(struct input_dev *input_dev,
-				   struct wacom_wac *wacom_wac);
-#endif
diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c
deleted file mode 100644
index 2c613cd41dd6..000000000000
--- a/drivers/input/tablet/wacom_sys.c
+++ /dev/null
@@ -1,1497 +0,0 @@
-/*
- * drivers/input/tablet/wacom_sys.c
- *
- *  USB Wacom 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_wac.h"
-#include "wacom.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			((HID_USAGE_PAGE_DESKTOP << 16) | 0x30)
-#define HID_USAGE_Y			((HID_USAGE_PAGE_DESKTOP << 16) | 0x31)
-#define HID_USAGE_PRESSURE		((HID_USAGE_PAGE_DIGITIZER << 16) | 0x30)
-#define HID_USAGE_X_TILT		((HID_USAGE_PAGE_DIGITIZER << 16) | 0x3d)
-#define HID_USAGE_Y_TILT		((HID_USAGE_PAGE_DIGITIZER << 16) | 0x3e)
-#define HID_USAGE_FINGER		((HID_USAGE_PAGE_DIGITIZER << 16) | 0x22)
-#define HID_USAGE_STYLUS		((HID_USAGE_PAGE_DIGITIZER << 16) | 0x20)
-#define HID_USAGE_CONTACTMAX		((HID_USAGE_PAGE_DIGITIZER << 16) | 0x55)
-#define HID_COLLECTION			0xa1
-#define HID_COLLECTION_LOGICAL		0x02
-#define HID_COLLECTION_END		0xc0
-
-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
-#define WAC_MSG_RETRIES		5
-
-#define WAC_CMD_LED_CONTROL	0x20
-#define WAC_CMD_ICON_START	0x21
-#define WAC_CMD_ICON_XFER	0x23
-#define WAC_CMD_RETRIES		10
-
-static int wacom_get_report(struct usb_interface *intf, u8 type, u8 id,
-			    void *buf, size_t size, unsigned int retries)
-{
-	struct usb_device *dev = interface_to_usbdev(intf);
-	int retval;
-
-	do {
-		retval = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
-				USB_REQ_GET_REPORT,
-				USB_DIR_IN | USB_TYPE_CLASS |
-				USB_RECIP_INTERFACE,
-				(type << 8) + id,
-				intf->altsetting[0].desc.bInterfaceNumber,
-				buf, size, 100);
-	} while ((retval == -ETIMEDOUT || retval == -EPIPE) && --retries);
-
-	return retval;
-}
-
-static int wacom_set_report(struct usb_interface *intf, u8 type, u8 id,
-			    void *buf, size_t size, unsigned int retries)
-{
-	struct usb_device *dev = interface_to_usbdev(intf);
-	int retval;
-
-	do {
-		retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
-				USB_REQ_SET_REPORT,
-				USB_TYPE_CLASS | USB_RECIP_INTERFACE,
-				(type << 8) + id,
-				intf->altsetting[0].desc.bInterfaceNumber,
-				buf, size, 1000);
-	} while ((retval == -ETIMEDOUT || retval == -EPIPE) && --retries);
-
-	return retval;
-}
-
-static void wacom_sys_irq(struct urb *urb)
-{
-	struct wacom *wacom = urb->context;
-	struct device *dev = &wacom->intf->dev;
-	int retval;
-
-	switch (urb->status) {
-	case 0:
-		/* success */
-		break;
-	case -ECONNRESET:
-	case -ENOENT:
-	case -ESHUTDOWN:
-		/* this urb is terminated, clean up */
-		dev_dbg(dev, "%s - urb shutting down with status: %d\n",
-			__func__, urb->status);
-		return;
-	default:
-		dev_dbg(dev, "%s - nonzero urb status received: %d\n",
-			__func__, urb->status);
-		goto exit;
-	}
-
-	wacom_wac_irq(&wacom->wacom_wac, urb->actual_length);
-
- exit:
-	usb_mark_last_busy(wacom->usbdev);
-	retval = usb_submit_urb(urb, GFP_ATOMIC);
-	if (retval)
-		dev_err(dev, "%s - usb_submit_urb failed with result %d\n",
-			__func__, retval);
-}
-
-static int wacom_open(struct input_dev *dev)
-{
-	struct wacom *wacom = input_get_drvdata(dev);
-	int retval = 0;
-
-	if (usb_autopm_get_interface(wacom->intf) < 0)
-		return -EIO;
-
-	mutex_lock(&wacom->lock);
-
-	if (usb_submit_urb(wacom->irq, GFP_KERNEL)) {
-		retval = -EIO;
-		goto out;
-	}
-
-	wacom->open = true;
-	wacom->intf->needs_remote_wakeup = 1;
-
-out:
-	mutex_unlock(&wacom->lock);
-	usb_autopm_put_interface(wacom->intf);
-	return retval;
-}
-
-static void wacom_close(struct input_dev *dev)
-{
-	struct wacom *wacom = input_get_drvdata(dev);
-	int autopm_error;
-
-	autopm_error = usb_autopm_get_interface(wacom->intf);
-
-	mutex_lock(&wacom->lock);
-	usb_kill_urb(wacom->irq);
-	wacom->open = false;
-	wacom->intf->needs_remote_wakeup = 0;
-	mutex_unlock(&wacom->lock);
-
-	if (!autopm_error)
-		usb_autopm_put_interface(wacom->intf);
-}
-
-/*
- * Calculate the resolution of the X or Y axis, given appropriate HID data.
- * This function is little more than hidinput_calc_abs_res stripped down.
- */
-static int wacom_calc_hid_res(int logical_extents, int physical_extents,
-                              unsigned char unit, unsigned char exponent)
-{
-	int prev, unit_exponent;
-
-	/* Check if the extents are sane */
-	if (logical_extents <= 0 || physical_extents <= 0)
-		return 0;
-
-	/* Get signed value of nybble-sized twos-compliment exponent */
-	unit_exponent = exponent;
-	if (unit_exponent > 7)
-		unit_exponent -= 16;
-
-	/* Convert physical_extents to millimeters */
-	if (unit == 0x11) {		/* If centimeters */
-		unit_exponent += 1;
-	} else if (unit == 0x13) {	/* If inches */
-		prev = physical_extents;
-		physical_extents *= 254;
-		if (physical_extents < prev)
-			return 0;
-		unit_exponent -= 1;
-	} else {
-		return 0;
-	}
-
-	/* Apply negative unit exponent */
-	for (; unit_exponent < 0; unit_exponent++) {
-		prev = logical_extents;
-		logical_extents *= 10;
-		if (logical_extents < prev)
-			return 0;
-	}
-	/* Apply positive unit exponent */
-	for (; unit_exponent > 0; unit_exponent--) {
-		prev = physical_extents;
-		physical_extents *= 10;
-		if (physical_extents < prev)
-			return 0;
-	}
-
-	/* Calculate resolution */
-	return logical_extents / physical_extents;
-}
-
-static int wacom_parse_logical_collection(unsigned char *report,
-					  struct wacom_features *features)
-{
-	int length = 0;
-
-	if (features->type == BAMBOO_PT) {
-
-		/* Logical collection is only used by 3rd gen Bamboo Touch */
-		features->pktlen = WACOM_PKGLEN_BBTOUCH3;
-		features->device_type = BTN_TOOL_FINGER;
-
-		features->x_max = features->y_max =
-			get_unaligned_le16(&report[10]);
-
-		length = 11;
-	}
-	return length;
-}
-
-static void wacom_retrieve_report_data(struct usb_interface *intf,
-				       struct wacom_features *features)
-{
-	int result = 0;
-	unsigned char *rep_data;
-
-	rep_data = kmalloc(2, GFP_KERNEL);
-	if (rep_data) {
-
-		rep_data[0] = 12;
-		result = wacom_get_report(intf, WAC_HID_FEATURE_REPORT,
-					  rep_data[0], rep_data, 2,
-					  WAC_MSG_RETRIES);
-
-		if (result >= 0 && rep_data[1] > 2)
-			features->touch_max = rep_data[1];
-
-		kfree(rep_data);
-	}
-}
-
-/*
- * Interface Descriptor of wacom devices can be incomplete and
- * inconsistent so wacom_features table is used to store stylus
- * device's packet lengths, various maximum values, and tablet
- * resolution based on product ID's.
- *
- * For devices that contain 2 interfaces, wacom_features table is
- * inaccurate for the touch interface.  Since the Interface Descriptor
- * for touch interfaces has pretty complete data, this function exists
- * to query tablet for this missing information instead of hard coding in
- * an additional table.
- *
- * A typical Interface Descriptor for a stylus will contain a
- * boot mouse application collection that is not of interest and this
- * function will ignore it.
- *
- * It also contains a digitizer application collection that also is not
- * of interest since any information it contains would be duplicate
- * of what is in wacom_features. Usually it defines a report of an array
- * of bytes that could be used as max length of the stylus packet returned.
- * If it happens to define a Digitizer-Stylus Physical Collection then
- * the X and Y logical values contain valid data but it is ignored.
- *
- * A typical Interface Descriptor for a touch interface will contain a
- * Digitizer-Finger Physical Collection which will define both logical
- * X/Y maximum as well as the physical size of tablet. Since touch
- * interfaces haven't supported pressure or distance, this is enough
- * information to override invalid values in the wacom_features table.
- *
- * 3rd gen Bamboo Touch no longer define a Digitizer-Finger Pysical
- * Collection. Instead they define a Logical Collection with a single
- * Logical Maximum for both X and Y.
- *
- * Intuos5 touch interface does not contain useful data. We deal with
- * this after returning from this function.
- */
-static int wacom_parse_hid(struct usb_interface *intf,
-			   struct hid_descriptor *hid_desc,
-			   struct wacom_features *features)
-{
-	struct usb_device *dev = interface_to_usbdev(intf);
-	char limit = 0;
-	/* result has to be defined as int for some devices */
-	int result = 0, touch_max = 0;
-	int i = 0, page = 0, 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++ < WAC_MSG_RETRIES);
-
-	/* No need to parse the Descriptor. It isn't an error though */
-	if (result < 0)
-		goto out;
-
-	for (i = 0; i < hid_desc->wDescriptorLength; i++) {
-
-		switch (report[i]) {
-		case HID_USAGE_PAGE:
-			page = report[i + 1];
-			i++;
-			break;
-
-		case HID_USAGE:
-			switch (page << 16 | report[i + 1]) {
-			case HID_USAGE_X:
-				if (finger) {
-					features->device_type = BTN_TOOL_FINGER;
-					/* touch device at least supports one touch point */
-					touch_max = 1;
-					switch (features->type) {
-					case TABLETPC2FG:
-						features->pktlen = WACOM_PKGLEN_TPC2FG;
-						break;
-
-					case MTSCREEN:
-					case WACOM_24HDT:
-						features->pktlen = WACOM_PKGLEN_MTOUCH;
-						break;
-
-					case MTTPC:
-					case MTTPC_B:
-						features->pktlen = WACOM_PKGLEN_MTTPC;
-						break;
-
-					case BAMBOO_PT:
-						features->pktlen = WACOM_PKGLEN_BBTOUCH;
-						break;
-
-					default:
-						features->pktlen = WACOM_PKGLEN_GRAPHIRE;
-						break;
-					}
-
-					switch (features->type) {
-					case BAMBOO_PT:
-						features->x_phy =
-							get_unaligned_le16(&report[i + 5]);
-						features->x_max =
-							get_unaligned_le16(&report[i + 8]);
-						i += 15;
-						break;
-
-					case WACOM_24HDT:
-						features->x_max =
-							get_unaligned_le16(&report[i + 3]);
-						features->x_phy =
-							get_unaligned_le16(&report[i + 8]);
-						features->unit = report[i - 1];
-						features->unitExpo = report[i - 3];
-						i += 12;
-						break;
-
-					case MTTPC_B:
-						features->x_max =
-							get_unaligned_le16(&report[i + 3]);
-						features->x_phy =
-							get_unaligned_le16(&report[i + 6]);
-						features->unit = report[i - 5];
-						features->unitExpo = report[i - 3];
-						i += 9;
-						break;
-
-					default:
-						features->x_max =
-							get_unaligned_le16(&report[i + 3]);
-						features->x_phy =
-							get_unaligned_le16(&report[i + 6]);
-						features->unit = report[i + 9];
-						features->unitExpo = report[i + 11];
-						i += 12;
-						break;
-					}
-				} else if (pen) {
-					/* penabled only accepts exact bytes of data */
-					if (features->type >= TABLETPC)
-						features->pktlen = WACOM_PKGLEN_GRAPHIRE;
-					features->device_type = BTN_TOOL_PEN;
-					features->x_max =
-						get_unaligned_le16(&report[i + 3]);
-					i += 4;
-				}
-				break;
-
-			case HID_USAGE_Y:
-				if (finger) {
-					switch (features->type) {
-					case TABLETPC2FG:
-					case MTSCREEN:
-					case MTTPC:
-						features->y_max =
-							get_unaligned_le16(&report[i + 3]);
-						features->y_phy =
-							get_unaligned_le16(&report[i + 6]);
-						i += 7;
-						break;
-
-					case WACOM_24HDT:
-						features->y_max =
-							get_unaligned_le16(&report[i + 3]);
-						features->y_phy =
-							get_unaligned_le16(&report[i - 2]);
-						i += 7;
-						break;
-
-					case BAMBOO_PT:
-						features->y_phy =
-							get_unaligned_le16(&report[i + 3]);
-						features->y_max =
-							get_unaligned_le16(&report[i + 6]);
-						i += 12;
-						break;
-
-					case MTTPC_B:
-						features->y_max =
-							get_unaligned_le16(&report[i + 3]);
-						features->y_phy =
-							get_unaligned_le16(&report[i + 6]);
-						i += 9;
-						break;
-
-					default:
-						features->y_max =
-							features->x_max;
-						features->y_phy =
-							get_unaligned_le16(&report[i + 3]);
-						i += 4;
-						break;
-					}
-				} else if (pen) {
-					features->y_max =
-						get_unaligned_le16(&report[i + 3]);
-					i += 4;
-				}
-				break;
-
-			case HID_USAGE_FINGER:
-				finger = 1;
-				i++;
-				break;
-
-			/*
-			 * Requiring Stylus Usage will ignore boot mouse
-			 * X/Y values and some cases of invalid Digitizer X/Y
-			 * values commonly reported.
-			 */
-			case HID_USAGE_STYLUS:
-				pen = 1;
-				i++;
-				break;
-
-			case HID_USAGE_CONTACTMAX:
-				/* leave touch_max as is if predefined */
-				if (!features->touch_max)
-					wacom_retrieve_report_data(intf, features);
-				i++;
-				break;
-
-			case HID_USAGE_PRESSURE:
-				if (pen) {
-					features->pressure_max =
-						get_unaligned_le16(&report[i + 3]);
-					i += 4;
-				}
-				break;
-			}
-			break;
-
-		case HID_COLLECTION_END:
-			/* reset UsagePage and Finger */
-			finger = page = 0;
-			break;
-
-		case HID_COLLECTION:
-			i++;
-			switch (report[i]) {
-			case HID_COLLECTION_LOGICAL:
-				i += wacom_parse_logical_collection(&report[i],
-								    features);
-				break;
-			}
-			break;
-		}
-	}
-
- out:
-	if (!features->touch_max && touch_max)
-		features->touch_max = touch_max;
-	result = 0;
-	kfree(report);
-	return result;
-}
-
-static int wacom_set_device_mode(struct usb_interface *intf, int report_id, int length, int mode)
-{
-	unsigned char *rep_data;
-	int error = -ENOMEM, limit = 0;
-
-	rep_data = kzalloc(length, GFP_KERNEL);
-	if (!rep_data)
-		return error;
-
-	do {
-		rep_data[0] = report_id;
-		rep_data[1] = mode;
-
-		error = wacom_set_report(intf, WAC_HID_FEATURE_REPORT,
-		                         report_id, rep_data, length, 1);
-	} while ((error < 0 || rep_data[1] != mode) && limit++ < WAC_MSG_RETRIES);
-
-	kfree(rep_data);
-
-	return error < 0 ? error : 0;
-}
-
-/*
- * Switch the tablet into its most-capable mode. Wacom tablets are
- * typically configured to power-up in a mode which sends mouse-like
- * reports to the OS. To get absolute position, pressure data, etc.
- * from the tablet, it is necessary to switch the tablet out of this
- * mode and into one which sends the full range of tablet data.
- */
-static int wacom_query_tablet_data(struct usb_interface *intf, struct wacom_features *features)
-{
-	if (features->device_type == BTN_TOOL_FINGER) {
-		if (features->type > TABLETPC) {
-			/* MT Tablet PC touch */
-			return wacom_set_device_mode(intf, 3, 4, 4);
-		}
-		else if (features->type == WACOM_24HDT || features->type == CINTIQ_HYBRID) {
-			return wacom_set_device_mode(intf, 18, 3, 2);
-		}
-	} else if (features->device_type == BTN_TOOL_PEN) {
-		if (features->type <= BAMBOO_PT && features->type != WIRELESS) {
-			return wacom_set_device_mode(intf, 2, 2, 2);
-		}
-	}
-
-	return 0;
-}
-
-static int wacom_retrieve_hid_descriptor(struct usb_interface *intf,
-					 struct wacom_features *features)
-{
-	int error = 0;
-	struct usb_host_interface *interface = intf->cur_altsetting;
-	struct hid_descriptor *hid_desc;
-
-	/* default features */
-	features->device_type = BTN_TOOL_PEN;
-	features->x_fuzz = 4;
-	features->y_fuzz = 4;
-	features->pressure_fuzz = 0;
-	features->distance_fuzz = 0;
-
-	/*
-	 * The wireless device HID is basic and layout conflicts with
-	 * other tablets (monitor and touch interface can look like pen).
-	 * Skip the query for this type and modify defaults based on
-	 * interface number.
-	 */
-	if (features->type == WIRELESS) {
-		if (intf->cur_altsetting->desc.bInterfaceNumber == 0) {
-			features->device_type = 0;
-		} else if (intf->cur_altsetting->desc.bInterfaceNumber == 2) {
-			features->device_type = BTN_TOOL_FINGER;
-			features->pktlen = WACOM_PKGLEN_BBTOUCH3;
-		}
-	}
-
-	/* only devices that support touch need to retrieve the info */
-	if (features->type < BAMBOO_PT) {
-		goto out;
-	}
-
-	error = usb_get_extra_descriptor(interface, HID_DEVICET_HID, &hid_desc);
-	if (error) {
-		error = usb_get_extra_descriptor(&interface->endpoint[0],
-						 HID_DEVICET_REPORT, &hid_desc);
-		if (error) {
-			dev_err(&intf->dev,
-				"can not retrieve extra class descriptor\n");
-			goto out;
-		}
-	}
-	error = wacom_parse_hid(intf, hid_desc, features);
-
- out:
-	return error;
-}
-
-struct wacom_usbdev_data {
-	struct list_head list;
-	struct kref kref;
-	struct usb_device *dev;
-	struct wacom_shared shared;
-};
-
-static LIST_HEAD(wacom_udev_list);
-static DEFINE_MUTEX(wacom_udev_list_lock);
-
-static struct usb_device *wacom_get_sibling(struct usb_device *dev, int vendor, int product)
-{
-	int port1;
-	struct usb_device *sibling;
-
-	if (vendor == 0 && product == 0)
-		return dev;
-
-	if (dev->parent == NULL)
-		return NULL;
-
-	usb_hub_for_each_child(dev->parent, port1, sibling) {
-		struct usb_device_descriptor *d;
-		if (sibling == NULL)
-			continue;
-
-		d = &sibling->descriptor;
-		if (d->idVendor == vendor && d->idProduct == product)
-			return sibling;
-	}
-
-	return NULL;
-}
-
-static struct wacom_usbdev_data *wacom_get_usbdev_data(struct usb_device *dev)
-{
-	struct wacom_usbdev_data *data;
-
-	list_for_each_entry(data, &wacom_udev_list, list) {
-		if (data->dev == dev) {
-			kref_get(&data->kref);
-			return data;
-		}
-	}
-
-	return NULL;
-}
-
-static int wacom_add_shared_data(struct wacom_wac *wacom,
-				 struct usb_device *dev)
-{
-	struct wacom_usbdev_data *data;
-	int retval = 0;
-
-	mutex_lock(&wacom_udev_list_lock);
-
-	data = wacom_get_usbdev_data(dev);
-	if (!data) {
-		data = kzalloc(sizeof(struct wacom_usbdev_data), GFP_KERNEL);
-		if (!data) {
-			retval = -ENOMEM;
-			goto out;
-		}
-
-		kref_init(&data->kref);
-		data->dev = dev;
-		list_add_tail(&data->list, &wacom_udev_list);
-	}
-
-	wacom->shared = &data->shared;
-
-out:
-	mutex_unlock(&wacom_udev_list_lock);
-	return retval;
-}
-
-static void wacom_release_shared_data(struct kref *kref)
-{
-	struct wacom_usbdev_data *data =
-		container_of(kref, struct wacom_usbdev_data, kref);
-
-	mutex_lock(&wacom_udev_list_lock);
-	list_del(&data->list);
-	mutex_unlock(&wacom_udev_list_lock);
-
-	kfree(data);
-}
-
-static void wacom_remove_shared_data(struct wacom_wac *wacom)
-{
-	struct wacom_usbdev_data *data;
-
-	if (wacom->shared) {
-		data = container_of(wacom->shared, struct wacom_usbdev_data, shared);
-		kref_put(&data->kref, wacom_release_shared_data);
-		wacom->shared = NULL;
-	}
-}
-
-static int wacom_led_control(struct wacom *wacom)
-{
-	unsigned char *buf;
-	int retval;
-
-	buf = kzalloc(9, GFP_KERNEL);
-	if (!buf)
-		return -ENOMEM;
-
-	if (wacom->wacom_wac.features.type >= INTUOS5S &&
-	    wacom->wacom_wac.features.type <= INTUOSPL) {
-		/*
-		 * Touch Ring and crop mark LED luminance may take on
-		 * one of four values:
-		 *    0 = Low; 1 = Medium; 2 = High; 3 = Off
-		 */
-		int ring_led = wacom->led.select[0] & 0x03;
-		int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03;
-		int crop_lum = 0;
-
-		buf[0] = WAC_CMD_LED_CONTROL;
-		buf[1] = (crop_lum << 4) | (ring_lum << 2) | (ring_led);
-	}
-	else {
-		int led = wacom->led.select[0] | 0x4;
-
-		if (wacom->wacom_wac.features.type == WACOM_21UX2 ||
-		    wacom->wacom_wac.features.type == WACOM_24HD)
-			led |= (wacom->led.select[1] << 4) | 0x40;
-
-		buf[0] = WAC_CMD_LED_CONTROL;
-		buf[1] = led;
-		buf[2] = wacom->led.llv;
-		buf[3] = wacom->led.hlv;
-		buf[4] = wacom->led.img_lum;
-	}
-
-	retval = wacom_set_report(wacom->intf, 0x03, WAC_CMD_LED_CONTROL,
-				  buf, 9, WAC_CMD_RETRIES);
-	kfree(buf);
-
-	return retval;
-}
-
-static int wacom_led_putimage(struct wacom *wacom, int button_id, const void *img)
-{
-	unsigned char *buf;
-	int i, retval;
-
-	buf = kzalloc(259, GFP_KERNEL);
-	if (!buf)
-		return -ENOMEM;
-
-	/* Send 'start' command */
-	buf[0] = WAC_CMD_ICON_START;
-	buf[1] = 1;
-	retval = wacom_set_report(wacom->intf, 0x03, WAC_CMD_ICON_START,
-				  buf, 2, WAC_CMD_RETRIES);
-	if (retval < 0)
-		goto out;
-
-	buf[0] = WAC_CMD_ICON_XFER;
-	buf[1] = button_id & 0x07;
-	for (i = 0; i < 4; i++) {
-		buf[2] = i;
-		memcpy(buf + 3, img + i * 256, 256);
-
-		retval = wacom_set_report(wacom->intf, 0x03, WAC_CMD_ICON_XFER,
-					  buf, 259, WAC_CMD_RETRIES);
-		if (retval < 0)
-			break;
-	}
-
-	/* Send 'stop' */
-	buf[0] = WAC_CMD_ICON_START;
-	buf[1] = 0;
-	wacom_set_report(wacom->intf, 0x03, WAC_CMD_ICON_START,
-			 buf, 2, WAC_CMD_RETRIES);
-
-out:
-	kfree(buf);
-	return retval;
-}
-
-static ssize_t wacom_led_select_store(struct device *dev, int set_id,
-				      const char *buf, size_t count)
-{
-	struct wacom *wacom = dev_get_drvdata(dev);
-	unsigned int id;
-	int err;
-
-	err = kstrtouint(buf, 10, &id);
-	if (err)
-		return err;
-
-	mutex_lock(&wacom->lock);
-
-	wacom->led.select[set_id] = id & 0x3;
-	err = wacom_led_control(wacom);
-
-	mutex_unlock(&wacom->lock);
-
-	return err < 0 ? err : count;
-}
-
-#define DEVICE_LED_SELECT_ATTR(SET_ID)					\
-static ssize_t wacom_led##SET_ID##_select_store(struct device *dev,	\
-	struct device_attribute *attr, const char *buf, size_t count)	\
-{									\
-	return wacom_led_select_store(dev, SET_ID, buf, count);		\
-}									\
-static ssize_t wacom_led##SET_ID##_select_show(struct device *dev,	\
-	struct device_attribute *attr, char *buf)			\
-{									\
-	struct wacom *wacom = dev_get_drvdata(dev);			\
-	return snprintf(buf, 2, "%d\n", wacom->led.select[SET_ID]);	\
-}									\
-static DEVICE_ATTR(status_led##SET_ID##_select, S_IWUSR | S_IRUSR,	\
-		    wacom_led##SET_ID##_select_show,			\
-		    wacom_led##SET_ID##_select_store)
-
-DEVICE_LED_SELECT_ATTR(0);
-DEVICE_LED_SELECT_ATTR(1);
-
-static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest,
-				     const char *buf, size_t count)
-{
-	unsigned int value;
-	int err;
-
-	err = kstrtouint(buf, 10, &value);
-	if (err)
-		return err;
-
-	mutex_lock(&wacom->lock);
-
-	*dest = value & 0x7f;
-	err = wacom_led_control(wacom);
-
-	mutex_unlock(&wacom->lock);
-
-	return err < 0 ? err : count;
-}
-
-#define DEVICE_LUMINANCE_ATTR(name, field)				\
-static ssize_t wacom_##name##_luminance_store(struct device *dev,	\
-	struct device_attribute *attr, const char *buf, size_t count)	\
-{									\
-	struct wacom *wacom = dev_get_drvdata(dev);			\
-									\
-	return wacom_luminance_store(wacom, &wacom->led.field,		\
-				     buf, count);			\
-}									\
-static DEVICE_ATTR(name##_luminance, S_IWUSR,				\
-		   NULL, wacom_##name##_luminance_store)
-
-DEVICE_LUMINANCE_ATTR(status0, llv);
-DEVICE_LUMINANCE_ATTR(status1, hlv);
-DEVICE_LUMINANCE_ATTR(buttons, img_lum);
-
-static ssize_t wacom_button_image_store(struct device *dev, int button_id,
-					const char *buf, size_t count)
-{
-	struct wacom *wacom = dev_get_drvdata(dev);
-	int err;
-
-	if (count != 1024)
-		return -EINVAL;
-
-	mutex_lock(&wacom->lock);
-
-	err = wacom_led_putimage(wacom, button_id, buf);
-
-	mutex_unlock(&wacom->lock);
-</