// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  USB Wacom tablet support - Wacom specific code
 */

#include "wacom_wac.h"
#include "wacom.h"
#include <linux/input/mt.h>
#include <linux/jiffies.h>

/* resolution for penabled devices */
#define WACOM_PL_RES            20
#define WACOM_PENPRTN_RES       40
#define WACOM_VOLITO_RES        50
#define WACOM_GRAPHIRE_RES      80
#define WACOM_INTUOS_RES        100
#define WACOM_INTUOS3_RES       200

/* Newer Cintiq and DTU have an offset between tablet and screen areas */
#define WACOM_DTU_OFFSET        200
#define WACOM_CINTIQ_OFFSET     400

/*
 * Scale factor relating reported contact size to logical contact area.
 * 2^14/pi is a good approximation on Intuos5 and 3rd-gen Bamboo
 */
#define WACOM_CONTACT_AREA_SCALE 2607

static bool touch_arbitration = 1;
module_param(touch_arbitration, bool, 0644);
MODULE_PARM_DESC(touch_arbitration, " on (Y) off (N)");

static void wacom_report_numbered_buttons(struct input_dev *input_dev,
                                int button_count, int mask);

static int wacom_numbered_button_to_key(int n);

static void wacom_update_led(struct wacom *wacom, int button_count, int mask,
                             int group);

static void wacom_force_proxout(struct wacom_wac *wacom_wac)
{
        struct input_dev *input = wacom_wac->pen_input;

        wacom_wac->shared->stylus_in_proximity = 0;

        input_report_key(input, BTN_TOUCH, 0);
        input_report_key(input, BTN_STYLUS, 0);
        input_report_key(input, BTN_STYLUS2, 0);
        input_report_key(input, BTN_STYLUS3, 0);
        input_report_key(input, wacom_wac->tool[0], 0);
        if (wacom_wac->serial[0]) {
                input_report_abs(input, ABS_MISC, 0);
        }
        input_report_abs(input, ABS_PRESSURE, 0);

        wacom_wac->tool[0] = 0;
        wacom_wac->id[0] = 0;
        wacom_wac->serial[0] = 0;

        input_sync(input);
}

void wacom_idleprox_timeout(struct timer_list *list)
{
        struct wacom *wacom = timer_container_of(wacom, list, idleprox_timer);
        struct wacom_wac *wacom_wac = &wacom->wacom_wac;

        if (!wacom_wac->hid_data.sense_state) {
                return;
        }

        hid_warn(wacom->hdev, "%s: tool appears to be hung in-prox. forcing it out.\n", __func__);
        wacom_force_proxout(wacom_wac);
}

/*
 * Percent of battery capacity for Graphire.
 * 8th value means AC online and show 100% capacity.
 */
static unsigned short batcap_gr[8] = { 1, 15, 25, 35, 50, 70, 100, 100 };

/*
 * Percent of battery capacity for Intuos4 WL, AC has a separate bit.
 */
static unsigned short batcap_i4[8] = { 1, 15, 30, 45, 60, 70, 85, 100 };

static void __wacom_notify_battery(struct wacom_battery *battery,
                                   int bat_status, int bat_capacity,
                                   bool bat_charging, bool bat_connected,
                                   bool ps_connected)
{
        bool changed = battery->bat_status       != bat_status    ||
                       battery->battery_capacity != bat_capacity  ||
                       battery->bat_charging     != bat_charging  ||
                       battery->bat_connected    != bat_connected ||
                       battery->ps_connected     != ps_connected;

        if (changed) {
                battery->bat_status = bat_status;
                battery->battery_capacity = bat_capacity;
                battery->bat_charging = bat_charging;
                battery->bat_connected = bat_connected;
                battery->ps_connected = ps_connected;

                if (battery->battery)
                        power_supply_changed(battery->battery);
        }
}

static void wacom_notify_battery(struct wacom_wac *wacom_wac,
        int bat_status, int bat_capacity, bool bat_charging,
        bool bat_connected, bool ps_connected)
{
        struct wacom *wacom = container_of(wacom_wac, struct wacom, wacom_wac);
        bool bat_initialized = wacom->battery.battery;
        bool has_quirk = wacom_wac->features.quirks & WACOM_QUIRK_BATTERY;

        if (bat_initialized != has_quirk)
                wacom_schedule_work(wacom_wac, WACOM_WORKER_BATTERY);

        __wacom_notify_battery(&wacom->battery, bat_status, bat_capacity,
                               bat_charging, bat_connected, ps_connected);
}

static int wacom_penpartner_irq(struct wacom_wac *wacom)
{
        unsigned char *data = wacom->data;
        struct input_dev *input = wacom->pen_input;

        switch (data[0]) {
        case 1:
                if (data[5] & 0x80) {
                        wacom->tool[0] = (data[5] & 0x20) ? BTN_TOOL_RUBBER : BTN_TOOL_PEN;
                        wacom->id[0] = (data[5] & 0x20) ? ERASER_DEVICE_ID : STYLUS_DEVICE_ID;
                        input_report_key(input, wacom->tool[0], 1);
                        input_report_abs(input, ABS_MISC, wacom->id[0]); /* report tool id */
                        input_report_abs(input, ABS_X, get_unaligned_le16(&data[1]));
                        input_report_abs(input, ABS_Y, get_unaligned_le16(&data[3]));
                        input_report_abs(input, ABS_PRESSURE, (signed char)data[6] + 127);
                        input_report_key(input, BTN_TOUCH, ((signed char)data[6] > -127));
                        input_report_key(input, BTN_STYLUS, (data[5] & 0x40));
                } else {
                        input_report_key(input, wacom->tool[0], 0);
                        input_report_abs(input, ABS_MISC, 0); /* report tool id */
                        input_report_abs(input, ABS_PRESSURE, -1);
                        input_report_key(input, BTN_TOUCH, 0);
                }
                break;

        case 2:
                input_report_key(input, BTN_TOOL_PEN, 1);
                input_report_abs(input, ABS_MISC, STYLUS_DEVICE_ID); /* report tool id */
                input_report_abs(input, ABS_X, get_unaligned_le16(&data[1]));
                input_report_abs(input, ABS_Y, get_unaligned_le16(&data[3]));
                input_report_abs(input, ABS_PRESSURE, (signed char)data[6] + 127);
                input_report_key(input, BTN_TOUCH, ((signed char)data[6] > -80) && !(data[5] & 0x20));
                input_report_key(input, BTN_STYLUS, (data[5] & 0x40));
                break;

        default:
                dev_dbg(input->dev.parent,
                        "%s: received unknown report #%d\n", __func__, data[0]);
                return 0;
        }

        return 1;
}

static int wacom_pl_irq(struct wacom_wac *wacom)
{
        struct wacom_features *features = &wacom->features;
        unsigned char *data = wacom->data;
        struct input_dev *input = wacom->pen_input;
        int prox, pressure;

        if (data[0] != WACOM_REPORT_PENABLED) {
                dev_dbg(input->dev.parent,
                        "%s: received unknown report #%d\n", __func__, data[0]);
                return 0;
        }

        prox = data[1] & 0x40;

        if (!wacom->id[0]) {
                if ((data[0] & 0x10) || (data[4] & 0x20)) {
                        wacom->tool[0] = BTN_TOOL_RUBBER;
                        wacom->id[0] = ERASER_DEVICE_ID;
                }
                else {
                        wacom->tool[0] = BTN_TOOL_PEN;
                        wacom->id[0] = STYLUS_DEVICE_ID;
                }
        }

        /* If the eraser is in prox, STYLUS2 is always set. If we
         * mis-detected the type and notice that STYLUS2 isn't set
         * then force the eraser out of prox and let the pen in.
         */
        if (wacom->tool[0] == BTN_TOOL_RUBBER && !(data[4] & 0x20)) {
                input_report_key(input, BTN_TOOL_RUBBER, 0);
                input_report_abs(input, ABS_MISC, 0);
                input_sync(input);
                wacom->tool[0] = BTN_TOOL_PEN;
                wacom->id[0] = STYLUS_DEVICE_ID;
        }

        if (prox) {
                pressure = (signed char)((data[7] << 1) | ((data[4] >> 2) & 1));
                if (features->pressure_max > 255)
                        pressure = (pressure << 1) | ((data[4] >> 6) & 1);
                pressure += (features->pressure_max + 1) / 2;

                input_report_abs(input, ABS_X, data[3] | (data[2] << 7) | ((data[1] & 0x03) << 14));
                input_report_abs(input, ABS_Y, data[6] | (data[5] << 7) | ((data[4] & 0x03) << 14));
                input_report_abs(input, ABS_PRESSURE, pressure);

                input_report_key(input, BTN_TOUCH, data[4] & 0x08);
                input_report_key(input, BTN_STYLUS, data[4] & 0x10);
                /* Only allow the stylus2 button to be reported for the pen tool. */
                input_report_key(input, BTN_STYLUS2, (wacom->tool[0] == BTN_TOOL_PEN) && (data[4] & 0x20));
        }

        if (!prox)
                wacom->id[0] = 0;
        input_report_key(input, wacom->tool[0], prox);
        input_report_abs(input, ABS_MISC, wacom->id[0]);
        return 1;
}

static int wacom_ptu_irq(struct wacom_wac *wacom)
{
        unsigned char *data = wacom->data;
        struct input_dev *input = wacom->pen_input;

        if (data[0] != WACOM_REPORT_PENABLED) {
                dev_dbg(input->dev.parent,
                        "%s: received unknown report #%d\n", __func__, data[0]);
                return 0;
        }

        if (data[1] & 0x04) {
                input_report_key(input, BTN_TOOL_RUBBER, data[1] & 0x20);
                input_report_key(input, BTN_TOUCH, data[1] & 0x08);
                wacom->id[0] = ERASER_DEVICE_ID;
        } else {
                input_report_key(input, BTN_TOOL_PEN, data[1] & 0x20);
                input_report_key(input, BTN_TOUCH, data[1] & 0x01);
                wacom->id[0] = STYLUS_DEVICE_ID;
        }
        input_report_abs(input, ABS_MISC, wacom->id[0]); /* report tool id */
        input_report_abs(input, ABS_X, le16_to_cpup((__le16 *)&data[2]));
        input_report_abs(input, ABS_Y, le16_to_cpup((__le16 *)&data[4]));
        input_report_abs(input, ABS_PRESSURE, le16_to_cpup((__le16 *)&data[6]));
        input_report_key(input, BTN_STYLUS, data[1] & 0x02);
        input_report_key(input, BTN_STYLUS2, data[1] & 0x10);
        return 1;
}

static int wacom_dtu_irq(struct wacom_wac *wacom)
{
        unsigned char *data = wacom->data;
        struct input_dev *input = wacom->pen_input;
        int prox = data[1] & 0x20;

        dev_dbg(input->dev.parent,
                "%s: received report #%d", __func__, data[0]);

        if (prox) {
                /* Going into proximity select tool */
                wacom->tool[0] = (data[1] & 0x0c) ? BTN_TOOL_RUBBER : BTN_TOOL_PEN;
                if (wacom->tool[0] == BTN_TOOL_PEN)
                        wacom->id[0] = STYLUS_DEVICE_ID;
                else
                        wacom->id[0] = ERASER_DEVICE_ID;
        }
        input_report_key(input, BTN_STYLUS, data[1] & 0x02);
        input_report_key(input, BTN_STYLUS2, data[1] & 0x10);
        input_report_abs(input, ABS_X, le16_to_cpup((__le16 *)&data[2]));
        input_report_abs(input, ABS_Y, le16_to_cpup((__le16 *)&data[4]));
        input_report_abs(input, ABS_PRESSURE, ((data[7] & 0x01) << 8) | data[6]);
        input_report_key(input, BTN_TOUCH, data[1] & 0x05);
        if (!prox) /* out-prox */
                wacom->id[0] = 0;
        input_report_key(input, wacom->tool[0], prox);
        input_report_abs(input, ABS_MISC, wacom->id[0]);
        return 1;
}

static int wacom_dtus_irq(struct wacom_wac *wacom)
{
        unsigned char *data = wacom->data;
        struct input_dev *input = wacom->pen_input;
        unsigned short prox, pressure = 0;

        if (data[0] != WACOM_REPORT_DTUS && data[0] != WACOM_REPORT_DTUSPAD) {
                dev_dbg(input->dev.parent,
                        "%s: received unknown report #%d", __func__, data[0]);
                return 0;
        } else if (data[0] == WACOM_REPORT_DTUSPAD) {
                input = wacom->pad_input;
                input_report_key(input, BTN_0, (data[1] & 0x01));
                input_report_key(input, BTN_1, (data[1] & 0x02));
                input_report_key(input, BTN_2, (data[1] & 0x04));
                input_report_key(input, BTN_3, (data[1] & 0x08));
                input_report_abs(input, ABS_MISC,
                                 data[1] & 0x0f ? PAD_DEVICE_ID : 0);
                return 1;
        } else {
                prox = data[1] & 0x80;
                if (prox) {
                        switch ((data[1] >> 3) & 3) {
                        case 1: /* Rubber */
                                wacom->tool[0] = BTN_TOOL_RUBBER;
                                wacom->id[0] = ERASER_DEVICE_ID;
                                break;

                        case 2: /* Pen */
                                wacom->tool[0] = BTN_TOOL_PEN;
                                wacom->id[0] = STYLUS_DEVICE_ID;
                                break;
                        }
                }

                input_report_key(input, BTN_STYLUS, data[1] & 0x20);
                input_report_key(input, BTN_STYLUS2, data[1] & 0x40);
                input_report_abs(input, ABS_X, get_unaligned_be16(&data[3]));
                input_report_abs(input, ABS_Y, get_unaligned_be16(&data[5]));
                pressure = ((data[1] & 0x03) << 8) | (data[2] & 0xff);
                input_report_abs(input, ABS_PRESSURE, pressure);
                input_report_key(input, BTN_TOUCH, pressure > 10);

                if (!prox) /* out-prox */
                        wacom->id[0] = 0;
                input_report_key(input, wacom->tool[0], prox);
                input_report_abs(input, ABS_MISC, wacom->id[0]);
                return 1;
        }
}

static int wacom_graphire_irq(struct wacom_wac *wacom)
{
        struct wacom_features *features = &wacom->features;
        unsigned char *data = wacom->data;
        struct input_dev *input = wacom->pen_input;
        struct input_dev *pad_input = wacom->pad_input;
        int battery_capacity, ps_connected;
        int prox;
        int rw = 0;
        int retval = 0;

        if (features->type == GRAPHIRE_BT) {
                if (data[0] != WACOM_REPORT_PENABLED_BT) {
                        dev_dbg(input->dev.parent,
                                "%s: received unknown report #%d\n", __func__,
                                data[0]);
                        goto exit;
                }
        } else if (data[0] != WACOM_REPORT_PENABLED) {
                dev_dbg(input->dev.parent,
                        "%s: received unknown report #%d\n", __func__, data[0]);
                goto exit;
        }

        prox = data[1] & 0x80;
        if (prox || wacom->id[0]) {
                if (prox) {
                        switch ((data[1] >> 5) & 3) {

                        case 0: /* Pen */
                                wacom->tool[0] = BTN_TOOL_PEN;
                                wacom->id[0] = STYLUS_DEVICE_ID;
                                break;

                        case 1: /* Rubber */
                                wacom->tool[0] = BTN_TOOL_RUBBER;
                                wacom->id[0] = ERASER_DEVICE_ID;
                                break;

                        case 2: /* Mouse with wheel */
                                input_report_key(input, BTN_MIDDLE, data[1] & 0x04);
                                fallthrough;

                        case 3: /* Mouse without wheel */
                                wacom->tool[0] = BTN_TOOL_MOUSE;
                                wacom->id[0] = CURSOR_DEVICE_ID;
                                break;
                        }
                }
                input_report_abs(input, ABS_X, le16_to_cpup((__le16 *)&data[2]));
                input_report_abs(input, ABS_Y, le16_to_cpup((__le16 *)&data[4]));
                if (wacom->tool[0] != BTN_TOOL_MOUSE) {
                        if (features->type == GRAPHIRE_BT)
                                input_report_abs(input, ABS_PRESSURE, data[6] |
                                        (((__u16) (data[1] & 0x08)) << 5));
                        else
                                input_report_abs(input, ABS_PRESSURE, data[6] |
                                        ((data[7] & 0x03) << 8));
                        input_report_key(input, BTN_TOUCH, data[1] & 0x01);
                        input_report_key(input, BTN_STYLUS, data[1] & 0x02);
                        input_report_key(input, BTN_STYLUS2, data[1] & 0x04);
                } else {
                        input_report_key(input, BTN_LEFT, data[1] & 0x01);
                        input_report_key(input, BTN_RIGHT, data[1] & 0x02);
                        if (features->type == WACOM_G4 ||
                                        features->type == WACOM_MO) {
                                input_report_abs(input, ABS_DISTANCE, data[6] & 0x3f);
                                rw = (data[7] & 0x04) - (data[7] & 0x03);
                        } else if (features->type == GRAPHIRE_BT) {
                                /* Compute distance between mouse and tablet */
                                rw = 44 - (data[6] >> 2);
                                rw = clamp_val(rw, 0, 31);
                                input_report_abs(input, ABS_DISTANCE, rw);
                                if (((data[1] >> 5) & 3) == 2) {
                                        /* Mouse with wheel */
                                        input_report_key(input, BTN_MIDDLE,
                                                        data[1] & 0x04);
                                        rw = (data[6] & 0x01) ? -1 :
                                                (data[6] & 0x02) ? 1 : 0;
                                } else {
                                        rw = 0;
                                }
                        } else {
                                input_report_abs(input, ABS_DISTANCE, data[7] & 0x3f);
                                rw = -(signed char)data[6];
                        }
                        input_report_rel(input, REL_WHEEL, rw);
                }

                if (!prox)
                        wacom->id[0] = 0;
                input_report_abs(input, ABS_MISC, wacom->id[0]); /* report tool id */
                input_report_key(input, wacom->tool[0], prox);
                input_sync(input); /* sync last event */
        }

        /* send pad data */
        switch (features->type) {
        case WACOM_G4:
                prox = data[7] & 0xf8;
                if (prox || wacom->id[1]) {
                        wacom->id[1] = PAD_DEVICE_ID;
                        input_report_key(pad_input, BTN_BACK, (data[7] & 0x40));
                        input_report_key(pad_input, BTN_FORWARD, (data[7] & 0x80));
                        rw = ((data[7] & 0x18) >> 3) - ((data[7] & 0x20) >> 3);
                        input_report_rel(pad_input, REL_WHEEL, rw);
                        if (!prox)
                                wacom->id[1] = 0;
                        input_report_abs(pad_input, ABS_MISC, wacom->id[1]);
                        retval = 1;
                }
                break;

        case WACOM_MO:
                prox = (data[7] & 0xf8) || data[8];
                if (prox || wacom->id[1]) {
                        wacom->id[1] = PAD_DEVICE_ID;
                        input_report_key(pad_input, BTN_BACK, (data[7] & 0x08));
                        input_report_key(pad_input, BTN_LEFT, (data[7] & 0x20));
                        input_report_key(pad_input, BTN_FORWARD, (data[7] & 0x10));
                        input_report_key(pad_input, BTN_RIGHT, (data[7] & 0x40));
                        input_report_abs(pad_input, ABS_WHEEL, (data[8] & 0x7f));
                        if (!prox)
                                wacom->id[1] = 0;
                        input_report_abs(pad_input, ABS_MISC, wacom->id[1]);
                        retval = 1;
                }
                break;
        case GRAPHIRE_BT:
                prox = data[7] & 0x03;
                if (prox || wacom->id[1]) {
                        wacom->id[1] = PAD_DEVICE_ID;
                        input_report_key(pad_input, BTN_0, (data[7] & 0x02));
                        input_report_key(pad_input, BTN_1, (data[7] & 0x01));
                        if (!prox)
                                wacom->id[1] = 0;
                        input_report_abs(pad_input, ABS_MISC, wacom->id[1]);
                        retval = 1;
                }
                break;
        }

        /* Store current battery capacity and power supply state */
        if (features->type == GRAPHIRE_BT) {
                rw = (data[7] >> 2 & 0x07);
                battery_capacity = batcap_gr[rw];
                ps_connected = rw == 7;
                wacom_notify_battery(wacom, WACOM_POWER_SUPPLY_STATUS_AUTO,
                                     battery_capacity, ps_connected, 1,
                                     ps_connected);
        }
exit:
        return retval;
}

static void wacom_intuos_schedule_prox_event(struct wacom_wac *wacom_wac)
{
        struct wacom *wacom = container_of(wacom_wac, struct wacom, wacom_wac);
        struct wacom_features *features = &wacom_wac->features;
        struct hid_report *r;
        struct hid_report_enum *re;

        re = &(wacom->hdev->report_enum[HID_FEATURE_REPORT]);
        if (features->type == INTUOSHT2)
                r = re->report_id_hash[WACOM_REPORT_INTUOSHT2_ID];
        else
                r = re->report_id_hash[WACOM_REPORT_INTUOS_ID1];
        if (r) {
                hid_hw_request(wacom->hdev, r, HID_REQ_GET_REPORT);
        }
}

static int wacom_intuos_pad(struct wacom_wac *wacom)
{
        struct wacom_features *features = &wacom->features;
        unsigned char *data = wacom->data;
        struct input_dev *input = wacom->pad_input;
        int i;
        int buttons = 0, nbuttons = features->numbered_buttons;
        int keys = 0, nkeys = 0;
        int ring1 = 0, ring2 = 0;
        int strip1 = 0, strip2 = 0;
        bool prox = false;
        bool wrench = false, keyboard = false, mute_touch = false, menu = false,
             info = false;

        /* pad packets. Works as a second tool and is always in prox */
        if (!(data[0] == WACOM_REPORT_INTUOSPAD || data[0] == WACOM_REPORT_INTUOS5PAD ||
              data[0] == WACOM_REPORT_CINTIQPAD))
                return 0;

        if (features->type >= INTUOS4S && features->type <= INTUOS4L) {
                buttons = (data[3] << 1) | (data[2] & 0x01);
                ring1 = data[1];
        } else if (features->type == DTK) {
                buttons = data[6];
        } else if (features->type == WACOM_13HD) {
                buttons = (data[4] << 1) | (data[3] & 0x01);
        } else if (features->type == WACOM_24HD) {
                buttons = (data[8] << 8) | data[6];
                ring1 = data[1];
                ring2 = data[2];

                /*
                 * Three "buttons" are available on the 24HD which are
                 * physically implemented as a touchstrip. Each button
                 * is approximately 3 bits wide with a 2 bit spacing.
                 * The raw touchstrip bits are stored at:
                 *    ((data[3] & 0x1f) << 8) | data[4])
                 */
                nkeys = 3;
                keys = ((data[3] & 0x1C) ? 1<<2 : 0) |
                       ((data[4] & 0xE0) ? 1<<1 : 0) |
                       ((data[4] & 0x07) ? 1<<0 : 0);
                keyboard = !!(data[4] & 0xE0);
                info = !!(data[3] & 0x1C);

                if (features->oPid) {
                        mute_touch = !!(data[4] & 0x07);
                        if (mute_touch)
                                wacom->shared->is_touch_on =
                                        !wacom->shared->is_touch_on;
                } else {
                        wrench = !!(data[4] & 0x07);
                }
        } else if (features->type == WACOM_27QHD) {
                nkeys = 3;
                keys = data[2] & 0x07;

                wrench = !!(data[2] & 0x01);
                keyboard = !!(data[2] & 0x02);

                if (features->oPid) {
                        mute_touch = !!(data[2] & 0x04);
                        if (mute_touch)
                                wacom->shared->is_touch_on =
                                        !wacom->shared->is_touch_on;
                } else {
                        menu = !!(data[2] & 0x04);
                }
                input_report_abs(input, ABS_X, be16_to_cpup((__be16 *)&data[4]));
                input_report_abs(input, ABS_Y, be16_to_cpup((__be16 *)&data[6]));
                input_report_abs(input, ABS_Z, be16_to_cpup((__be16 *)&data[8]));
        } else if (features->type == CINTIQ_HYBRID) {
                /*
                 * Do not send hardware buttons under Android. They
                 * are already sent to the system through GPIO (and
                 * have different meaning).
                 *
                 * d-pad right  -> data[4] & 0x10
                 * d-pad up     -> data[4] & 0x20
                 * d-pad left   -> data[4] & 0x40
                 * d-pad down   -> data[4] & 0x80
                 * d-pad center -> data[3] & 0x01
                 */
                buttons = (data[4] << 1) | (data[3] & 0x01);
        } else if (features->type == CINTIQ_COMPANION_2) {
                /* d-pad right  -> data[2] & 0x10
                 * d-pad up     -> data[2] & 0x20
                 * d-pad left   -> data[2] & 0x40
                 * d-pad down   -> data[2] & 0x80
                 * d-pad center -> data[1] & 0x01
                 */
                buttons = ((data[2] >> 4) << 7) |
                          ((data[1] & 0x04) << 4) |
                          ((data[2] & 0x0F) << 2) |
                          (data[1] & 0x03);
        } else if (features->type >= INTUOS5S && features->type <= INTUOSPL) {
                /*
                 * ExpressKeys on Intuos5/Intuos Pro have a capacitive sensor in
                 * addition to the mechanical switch. Switch data is
                 * stored in data[4], capacitive data in data[5].
                 *
                 * Touch ring mode switch (data[3]) has no capacitive sensor
                 */
                buttons = (data[4] << 1) | (data[3] & 0x01);
                ring1 = data[2];
        } else {
                if (features->type == WACOM_21UX2 || features->type == WACOM_22HD) {
                        buttons = (data[8] << 10) | ((data[7] & 0x01) << 9) |
                                  (data[6] << 1) | (data[5] & 0x01);

                        if (features->type == WACOM_22HD) {
                                nkeys = 3;
                                keys = data[9] & 0x07;

                                info = !!(data[9] & 0x01);
                                wrench = !!(data[9] & 0x02);
                        }
                } else {
                        buttons = ((data[6] & 0x10) << 5)  |
                                  ((data[5] & 0x10) << 4)  |
                                  ((data[6] & 0x0F) << 4)  |
                                  (data[5] & 0x0F);
                }
                strip1 = ((data[1] & 0x1f) << 8) | data[2];
                strip2 = ((data[3] & 0x1f) << 8) | data[4];
        }

        prox = (buttons & ~(~0U << nbuttons)) | (keys & ~(~0U << nkeys)) |
               (ring1 & 0x80) | (ring2 & 0x80) | strip1 | strip2;

        wacom_report_numbered_buttons(input, nbuttons, buttons);

        for (i = 0; i < nkeys; i++)
                input_report_key(input, KEY_PROG1 + i, keys & (1 << i));

        input_report_key(input, KEY_BUTTONCONFIG, wrench);
        input_report_key(input, KEY_ONSCREEN_KEYBOARD, keyboard);
        input_report_key(input, KEY_CONTROLPANEL, menu);
        input_report_key(input, KEY_INFO, info);

        if (wacom->shared && wacom->shared->touch_input) {
                input_report_switch(wacom->shared->touch_input,
                                    SW_MUTE_DEVICE,
                                    !wacom->shared->is_touch_on);
                input_sync(wacom->shared->touch_input);
        }

        input_report_abs(input, ABS_RX, strip1);
        input_report_abs(input, ABS_RY, strip2);

        input_report_abs(input, ABS_WHEEL,    (ring1 & 0x80) ? (ring1 & 0x7f) : 0);
        input_report_abs(input, ABS_THROTTLE, (ring2 & 0x80) ? (ring2 & 0x7f) : 0);

        input_report_key(input, wacom->tool[1], prox ? 1 : 0);
        input_report_abs(input, ABS_MISC, prox ? PAD_DEVICE_ID : 0);

        input_event(input, EV_MSC, MSC_SERIAL, 0xffffffff);

        return 1;
}

static int wacom_intuos_id_mangle(int tool_id)
{
        return (tool_id & ~0xFFF) << 4 | (tool_id & 0xFFF);
}

static bool wacom_is_art_pen(int tool_id)
{
        bool is_art_pen = false;

        switch (tool_id) {
        case 0x885:     /* Intuos3 Marker Pen */
        case 0x804:     /* Intuos4/5 13HD/24HD Marker Pen */
        case 0x10804:   /* Intuos4/5 13HD/24HD Art Pen */
        case 0x204:     /* Art Pen 2 */
                is_art_pen = true;
                break;
        }
        return is_art_pen;
}

static int wacom_intuos_get_tool_type(int tool_id)
{
        switch (tool_id) {
        case 0x812: /* Inking pen */
        case 0x801: /* Intuos3 Inking pen */
        case 0x12802: /* Intuos4/5 Inking Pen */
        case 0x012:
                return BTN_TOOL_PENCIL;

        case 0x832: /* Stroke pen */
        case 0x032:
                return BTN_TOOL_BRUSH;

        case 0x007: /* Mouse 4D and 2D */
        case 0x09c:
        case 0x094:
        case 0x017: /* Intuos3 2D Mouse */
        case 0x806: /* Intuos4 Mouse */
                return BTN_TOOL_MOUSE;

        case 0x096: /* Lens cursor */
        case 0x097: /* Intuos3 Lens cursor */
        case 0x006: /* Intuos4 Lens cursor */
                return BTN_TOOL_LENS;

        case 0xd12:
        case 0x912:
        case 0x112:
        case 0x913: /* Intuos3 Airbrush */
        case 0x902: /* Intuos4/5 13HD/24HD Airbrush */
        case 0x10902: /* Intuos4/5 13HD/24HD Airbrush */
                return BTN_TOOL_AIRBRUSH;

        default:
                if (tool_id & 0x0008)
                        return BTN_TOOL_RUBBER;
                return BTN_TOOL_PEN;
        }
}

static void wacom_exit_report(struct wacom_wac *wacom)
{
        struct input_dev *input = wacom->pen_input;
        struct wacom_features *features = &wacom->features;
        unsigned char *data = wacom->data;
        int idx = (features->type == INTUOS) ? (data[1] & 0x01) : 0;

        /*
         * Reset all states otherwise we lose the initial states
         * when in-prox next time
         */
        input_report_abs(input, ABS_X, 0);
        input_report_abs(input, ABS_Y, 0);
        input_report_abs(input, ABS_DISTANCE, 0);
        input_report_abs(input, ABS_TILT_X, 0);
        input_report_abs(input, ABS_TILT_Y, 0);
        if (wacom->tool[idx] >= BTN_TOOL_MOUSE) {
                input_report_key(input, BTN_LEFT, 0);
                input_report_key(input, BTN_MIDDLE, 0);
                input_report_key(input, BTN_RIGHT, 0);
                input_report_key(input, BTN_SIDE, 0);
                input_report_key(input, BTN_EXTRA, 0);
                input_report_abs(input, ABS_THROTTLE, 0);
                input_report_abs(input, ABS_RZ, 0);
        } else {
                input_report_abs(input, ABS_PRESSURE, 0);
                input_report_key(input, BTN_STYLUS, 0);
                input_report_key(input, BTN_STYLUS2, 0);
                input_report_key(input, BTN_TOUCH, 0);
                input_report_abs(input, ABS_WHEEL, 0);
                if (features->type >= INTUOS3S)
                        input_report_abs(input, ABS_Z, 0);
        }
        input_report_key(input, wacom->tool[idx], 0);
        input_report_abs(input, ABS_MISC, 0); /* reset tool id */
        input_event(input, EV_MSC, MSC_SERIAL, wacom->serial[idx]);
        wacom->id[idx] = 0;
}

static int wacom_intuos_inout(struct wacom_wac *wacom)
{
        struct wacom_features *features = &wacom->features;
        unsigned char *data = wacom->data;
        struct input_dev *input = wacom->pen_input;
        int idx = (features->type == INTUOS) ? (data[1] & 0x01) : 0;

        if (!(((data[1] & 0xfc) == 0xc0) ||  /* in prox */
            ((data[1] & 0xfe) == 0x20) ||    /* in range */
            ((data[1] & 0xfe) == 0x80)))     /* out prox */
                return 0;

        /* Enter report */
        if ((data[1] & 0xfc) == 0xc0) {
                /* serial number of the tool */
                wacom->serial[idx] = ((__u64)(data[3] & 0x0f) << 28) +
                        (data[4] << 20) + (data[5] << 12) +
                        (data[6] << 4) + (data[7] >> 4);

                wacom->id[idx] = (data[2] << 4) | (data[3] >> 4) |
                     ((data[7] & 0x0f) << 16) | ((data[8] & 0xf0) << 8);

                wacom->tool[idx] = wacom_intuos_get_tool_type(wacom->id[idx]);

                wacom->shared->stylus_in_proximity = true;
                return 1;
        }

        /* in Range */
        if ((data[1] & 0xfe) == 0x20) {
                if (features->type != INTUOSHT2)
                        wacom->shared->stylus_in_proximity = true;

                /* in Range while exiting */
                if (wacom->reporting_data) {
                        input_report_key(input, BTN_TOUCH, 0);
                        input_report_abs(input, ABS_PRESSURE, 0);
                        input_report_abs(input, ABS_DISTANCE, wacom->features.distance_max);
                        return 2;
                }
                return 1;
        }

        /* Exit report */
        if ((data[1] & 0xfe) == 0x80) {
                wacom->shared->stylus_in_proximity = false;
                wacom->reporting_data = false;

                /* don't report exit if we don't know the ID */
                if (!wacom->id[idx])
                        return 1;

                wacom_exit_report(wacom);
                return 2;
        }

        return 0;
}

static inline bool touch_is_muted(struct wacom_wac *wacom_wac)
{
        return wacom_wac->probe_complete &&
               wacom_wac->shared->has_mute_touch_switch &&
               !wacom_wac->shared->is_touch_on;
}

static inline bool report_touch_events(struct wacom_wac *wacom)
{
        return (touch_arbitration ? !wacom->shared->stylus_in_proximity : 1);
}

static inline bool delay_pen_events(struct wacom_wac *wacom)
{
        return (wacom->shared->touch_down && touch_arbitration);
}

static int wacom_intuos_general(struct wacom_wac *wacom)
{
        struct wacom_features *features = &wacom->features;
        unsigned char *data = wacom->data;
        struct input_dev *input = wacom->pen_input;
        int idx = (features->type == INTUOS) ? (data[1] & 0x01) : 0;
        unsigned char type = (data[1] >> 1) & 0x0F;
        unsigned int x, y, distance, t;

        if (data[0] != WACOM_REPORT_PENABLED && data[0] != WACOM_REPORT_CINTIQ &&
                data[0] != WACOM_REPORT_INTUOS_PEN)
                return 0;

        if (delay_pen_events(wacom))
                return 1;

        /* don't report events if we don't know the tool ID */
        if (!wacom->id[idx]) {
                /* but reschedule a read of the current tool */
                wacom_intuos_schedule_prox_event(wacom);
                return 1;
        }

        /*
         * don't report events for invalid data
         */
        /* older I4 styli don't work with new Cintiqs */
        if ((!((wacom->id[idx] >> 16) & 0x01) &&
                        (features->type == WACOM_21UX2)) ||
            /* Only large Intuos support Lense Cursor */
            (wacom->tool[idx] == BTN_TOOL_LENS &&
                (features->type == INTUOS3 ||
                 features->type == INTUOS3S ||
                 features->type == INTUOS4 ||
                 features->type == INTUOS4S ||
                 features->type == INTUOS5 ||
                 features->type == INTUOS5S ||
                 features->type == INTUOSPM ||
                 features->type == INTUOSPS)) ||
           /* Cintiq doesn't send data when RDY bit isn't set */
           (features->type == CINTIQ && !(data[1] & 0x40)))
                return 1;

        x = (be16_to_cpup((__be16 *)&data[2]) << 1) | ((data[9] >> 1) & 1);
        y = (be16_to_cpup((__be16 *)&data[4]) << 1) | (data[9] & 1);
        distance = data[9] >> 2;
        if (features->type < INTUOS3S) {
                x >>= 1;
                y >>= 1;
                distance >>= 1;
        }
        if (features->type == INTUOSHT2)
                distance = features->distance_max - distance;
        input_report_abs(input, ABS_X, x);
        input_report_abs(input, ABS_Y, y);
        input_report_abs(input, ABS_DISTANCE, distance);

        switch (type) {
        case 0x00:
        case 0x01:
        case 0x02:
        case 0x03:
                /* general pen packet */
                t = (data[6] << 3) | ((data[7] & 0xC0) >> 5) | (data[1] & 1);
                if (features->pressure_max < 2047)
                        t >>= 1;
                input_report_abs(input, ABS_PRESSURE, t);
                if (features->type != INTUOSHT2) {
                    input_report_abs(input, ABS_TILT_X,
                                 (((data[7] << 1) & 0x7e) | (data[8] >> 7)) - 64);
                    input_report_abs(input, ABS_TILT_Y, (data[8] & 0x7f) - 64);
                }
                input_report_key(input, BTN_STYLUS, data[1] & 2);
                input_report_key(input, BTN_STYLUS2, data[1] & 4);
                input_report_key(input, BTN_TOUCH, t > 10);
                break;

        case 0x0a:
                /* airbrush second packet */
                input_report_abs(input, ABS_WHEEL,
                                (data[6] << 2) | ((data[7] >> 6) & 3));
                input_report_abs(input, ABS_TILT_X,
                                 (((data[7] << 1) & 0x7e) | (data[8] >> 7)) - 64);
                input_report_abs(input, ABS_TILT_Y, (data[8] & 0x7f) - 64);
                break;

        case 0x05:
                /* Rotation packet */
                if (features->type >= INTUOS3S) {
                        /* I3 marker pen rotation */
                        t = (data[6] << 3) | ((data[7] >> 5) & 7);
                        t = (data[7] & 0x20) ? ((t > 900) ? ((t-1) / 2 - 1350) :
                                ((t-1) / 2 + 450)) : (450 - t / 2) ;
                        input_report_abs(input, ABS_Z, t);
                } else {
                        /* 4D mouse 2nd packet */
                        t = (data[6] << 3) | ((data[7] >> 5) & 7);
                        input_report_abs(input, ABS_RZ, (data[7] & 0x20) ?
                                ((t - 1) / 2) : -t / 2);
                }
                break;

        case 0x04:
                /* 4D mouse 1st packet */
                input_report_key(input, BTN_LEFT,   data[8] & 0x01);
                input_report_key(input, BTN_MIDDLE, data[8] & 0x02);
                input_report_key(input, BTN_RIGHT,  data[8] & 0x04);

                input_report_key(input, BTN_SIDE,   data[8] & 0x20);
                input_report_key(input, BTN_EXTRA,  data[8] & 0x10);
                t = (data[6] << 2) | ((data[7] >> 6) & 3);
                input_report_abs(input, ABS_THROTTLE, (data[8] & 0x08) ? -t : t);
                break;

        case 0x06:
                /* I4 mouse */
                input_report_key(input, BTN_LEFT,   data[6] & 0x01);
                input_report_key(input, BTN_MIDDLE, data[6] & 0x02);
                input_report_key(input, BTN_RIGHT,  data[6] & 0x04);
                input_report_rel(input, REL_WHEEL, ((data[7] & 0x80) >> 7)
                                 - ((data[7] & 0x40) >> 6));
                input_report_key(input, BTN_SIDE,   data[6] & 0x08);
                input_report_key(input, BTN_EXTRA,  data[6] & 0x10);

                input_report_abs(input, ABS_TILT_X,
                        (((data[7] << 1) & 0x7e) | (data[8] >> 7)) - 64);
                input_report_abs(input, ABS_TILT_Y, (data[8] & 0x7f) - 64);
                break;

        case 0x08:
                if (wacom->tool[idx] == BTN_TOOL_MOUSE) {
                        /* 2D mouse packet */
                        input_report_key(input, BTN_LEFT,   data[8] & 0x04);
                        input_report_key(input, BTN_MIDDLE, data[8] & 0x08);
                        input_report_key(input, BTN_RIGHT,  data[8] & 0x10);
                        input_report_rel(input, REL_WHEEL, (data[8] & 0x01)
                                         - ((data[8] & 0x02) >> 1));

                        /* I3 2D mouse side buttons */
                        if (features->type >= INTUOS3S && features->type <= INTUOS3L) {
                                input_report_key(input, BTN_SIDE,   data[8] & 0x40);
                                input_report_key(input, BTN_EXTRA,  data[8] & 0x20);
                        }
                }
                else if (wacom->tool[idx] == BTN_TOOL_LENS) {
                        /* Lens cursor packets */
                        input_report_key(input, BTN_LEFT,   data[8] & 0x01);
                        input_report_key(input, BTN_MIDDLE, data[8] & 0x02);
                        input_report_key(input, BTN_RIGHT,  data[8] & 0x04);
                        input_report_key(input, BTN_SIDE,   data[8] & 0x10);
                        input_report_key(input, BTN_EXTRA,  data[8] & 0x08);
                }
                break;

        case 0x07:
        case 0x09:
        case 0x0b:
        case 0x0c:
        case 0x0d:
        case 0x0e:
        case 0x0f:
                /* unhandled */
                break;
        }

        input_report_abs(input, ABS_MISC,
                         wacom_intuos_id_mangle(wacom->id[idx])); /* report tool id */
        input_report_key(input, wacom->tool[idx], 1);
        input_event(input, EV_MSC, MSC_SERIAL, wacom->serial[idx]);
        wacom->reporting_data = true;
        return 2;
}

static int wacom_intuos_irq(struct wacom_wac *wacom)
{
        unsigned char *data = wacom->data;
        struct input_dev *input = wacom->pen_input;
        int result;

        if (data[0] != WACOM_REPORT_PENABLED &&
            data[0] != WACOM_REPORT_INTUOS_ID1 &&
            data[0] != WACOM_REPORT_INTUOS_ID2 &&
            data[0] != WACOM_REPORT_INTUOSPAD &&
            data[0] != WACOM_REPORT_INTUOS_PEN &&
            data[0] != WACOM_REPORT_CINTIQ &&
            data[0] != WACOM_REPORT_CINTIQPAD &&
            data[0] != WACOM_REPORT_INTUOS5PAD) {
                dev_dbg(input->dev.parent,
                        "%s: received unknown report #%d\n", __func__, data[0]);
                return 0;
        }

        /* process pad events */
        result = wacom_intuos_pad(wacom);
        if (result)
                return result;

        /* process in/out prox events */
        result = wacom_intuos_inout(wacom);
        if (result)
                return result - 1;

        /* process general packets */
        result = wacom_intuos_general(wacom);
        if (result)
                return result - 1;

        return 0;
}

static int wacom_remote_irq(struct wacom_wac *wacom_wac, size_t len)
{
        unsigned char *data = wacom_wac->data;
        struct input_dev *input;
        struct wacom *wacom = container_of(wacom_wac, struct wacom, wacom_wac);
        struct wacom_remote *remote = wacom->remote;
        int bat_charging, bat_percent, touch_ring_mode;
        __u32 serial;
        int i, index = -1;
        unsigned long flags;

        if (data[0] != WACOM_REPORT_REMOTE) {
                hid_dbg(wacom->hdev, "%s: received unknown report #%d",
                        __func__, data[0]);
                return 0;
        }

        serial = data[3] + (data[4] << 8) + (data[5] << 16);
        wacom_wac->id[0] = PAD_DEVICE_ID;

        spin_lock_irqsave(&remote->remote_lock, flags);

        for (i = 0; i < WACOM_MAX_REMOTES; i++) {
                if (remote->remotes[i].serial == serial) {
                        index = i;
                        break;
                }
        }

        if (index < 0 || !remote->remotes[index].registered)
                goto out;

        remote->remotes[i].active_time = ktime_get();
        input = remote->remotes[index].input;

        input_report_key(input, BTN_0, (data[9] & 0x01));
        input_report_key(input, BTN_1, (data[9] & 0x02));
        input_report_key(input, BTN_2, (data[9] & 0x04));
        input_report_key(input, BTN_3, (data[9] & 0x08));
        input_report_key(input, BTN_4, (data[9] & 0x10));
        input_report_key(input, BTN_5, (data[9] & 0x20));
        input_report_key(input, BTN_6, (data[9] & 0x40));
        input_report_key(input, BTN_7, (data[9] & 0x80));

        input_report_key(input, BTN_8, (data[10] & 0x01));
        input_report_key(input, BTN_9, (data[10] & 0x02));
        input_report_key(input, BTN_A, (data[10] & 0x04));
        input_report_key(input, BTN_B, (data[10] & 0x08));
        input_report_key(input, BTN_C, (data[10] & 0x10));
        input_report_key(input, BTN_X, (data[10] & 0x20));
        input_report_key(input, BTN_Y, (data[10] & 0x40));
        input_report_key(input, BTN_Z, (data[10] & 0x80));

        input_report_key(input, BTN_BASE, (data[11] & 0x01));
        input_report_key(input, BTN_BASE2, (data[11] & 0x02));

        if (data[12] & 0x80)
                input_report_abs(input, ABS_WHEEL, (data[12] & 0x7f) - 1);
        else
                input_report_abs(input, ABS_WHEEL, 0);

        bat_percent = data[7] & 0x7f;
        bat_charging = !!(data[7] & 0x80);

        if (data[9] | data[10] | (data[11] & 0x03) | data[12])
                input_report_abs(input, ABS_MISC, PAD_DEVICE_ID);
        else
                input_report_abs(input, ABS_MISC, 0);

        input_event(input, EV_MSC, MSC_SERIAL, serial);

        input_sync(input);

        /*Which mode select (LED light) is currently on?*/
        touch_ring_mode = (data[11] & 0xC0) >> 6;

        for (i = 0; i < WACOM_MAX_REMOTES; i++) {
                if (remote->remotes[i].serial == serial)
                        wacom->led.groups[i].select = touch_ring_mode;
        }

        __wacom_notify_battery(&remote->remotes[index].battery,
                                WACOM_POWER_SUPPLY_STATUS_AUTO, bat_percent,
                                bat_charging, 1, bat_charging);

out:
        spin_unlock_irqrestore(&remote->remote_lock, flags);
        return 0;
}

static void wacom_remote_status_irq(struct wacom_wac *wacom_wac, size_t len)
{
        struct wacom *wacom = container_of(wacom_wac, struct wacom, wacom_wac);
        unsigned char *data = wacom_wac->data;
        struct wacom_remote *remote = wacom->remote;
        struct wacom_remote_work_data remote_data;
        unsigned long flags;
        int i, ret;

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

        memset(&remote_data, 0, sizeof(struct wacom_remote_work_data));

        for (i = 0; i < WACOM_MAX_REMOTES; i++) {
                int j = i * 6;
                int serial = (data[j+6] << 16) + (data[j+5] << 8) + data[j+4];

                remote_data.remote[i].serial = serial;
        }

        spin_lock_irqsave(&remote->remote_lock, flags);

        ret = kfifo_in(&remote->remote_fifo, &remote_data, sizeof(remote_data));
        if (ret != sizeof(remote_data)) {
                spin_unlock_irqrestore(&remote->remote_lock, flags);
                hid_err(wacom->hdev, "Can't queue Remote status event.\n");
                return;
        }

        spin_unlock_irqrestore(&remote->remote_lock, flags);

        wacom_schedule_work(wacom_wac, WACOM_WORKER_REMOTE);
}

static int int_dist(int x1, int y1, int x2, int y2)
{
        int x = x2 - x1;
        int y = y2 - y1;

        return int_sqrt(x*x + y*y);
}

static void wacom_intuos_bt_process_data(struct wacom_wac *wacom,
                unsigned char *data)
{
        memcpy(wacom->data, data, 10);
        wacom_intuos_irq(wacom);

        input_sync(wacom->pen_input);
        if (wacom->pad_input)
                input_sync(wacom->pad_input);
}

static int wacom_intuos_bt_irq(struct wacom_wac *wacom, size_t len)
{
        u8 *data = kmemdup(wacom->data, len, GFP_KERNEL);
        int i = 1;
        unsigned power_raw, battery_capacity, bat_charging, ps_connected;

        switch (data[0]) {
        case 0x04:
                if (len < 32) {
                        dev_warn(wacom->pen_input->dev.parent,
                                 "Report 0x04 too short: %zu bytes\n", len);
                        break;
                }
                wacom_intuos_bt_process_data(wacom, data + i);
                i += 10;
                fallthrough;
        case 0x03:
                if (i == 1 && len < 22) {
                        dev_warn(wacom->pen_input->dev.parent,
                                 "Report 0x03 too short: %zu bytes\n", len);
                        break;
                }
                wacom_intuos_bt_process_data(wacom, data + i);
                i += 10;
                wacom_intuos_bt_process_data(wacom, data + i);
                i += 10;
                power_raw = data[i];
                bat_charging = (power_raw & 0x08) ? 1 : 0;
                ps_connected = (power_raw & 0x10) ? 1 : 0;
                battery_capacity = batcap_i4[power_raw & 0x07];
                wacom_notify_battery(wacom, WACOM_POWER_SUPPLY_STATUS_AUTO,
                                     battery_capacity, bat_charging,
                                     battery_capacity || bat_charging,
                                     ps_connected);
                break;
        default:
                dev_dbg(wacom->pen_input->dev.parent,
                                "Unknown report: %d,%d size:%zu\n",
                                data[0], data[1], len);
                break;
        }

        kfree(data);
        return 0;
}

static int wacom_wac_finger_count_touches(struct wacom_wac *wacom)
{
        struct input_dev *input = wacom->touch_input;
        unsigned touch_max = wacom->features.touch_max;
        int count = 0;
        int i;

        if (!touch_max)
                return 0;

        if (touch_max == 1)
                return test_bit(BTN_TOUCH, input->key) &&
                        report_touch_events(wacom);

        for (i = 0; i < input->mt->num_slots; i++) {
                struct input_mt_slot *ps = &input->mt->slots[i];
                int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID);
                if (id >= 0)
                        count++;
        }

        return count;
}

static void wacom_intuos_pro2_bt_pen(struct wacom_wac *wacom)
{
        int pen_frame_len, pen_frames;

        struct input_dev *pen_input = wacom->pen_input;
        unsigned char *data = wacom->data;
        int number_of_valid_frames = 0;
        ktime_t time_interval = 15000000;
        ktime_t time_packet_received = ktime_get();
        int i;

        if (wacom->features.type == INTUOSP2_BT ||
            wacom->features.type == INTUOSP2S_BT) {
                wacom->serial[0] = get_unaligned_le64(&data[99]);
                wacom->id[0]     = get_unaligned_le16(&data[107]);
                pen_frame_len = 14;
                pen_frames = 7;
        } else {
                wacom->serial[0] = get_unaligned_le64(&data[33]);
                wacom->id[0]     = get_unaligned_le16(&data[41]);
                pen_frame_len = 8;
                pen_frames = 4;
        }

        if (wacom->serial[0] >> 52 == 1) {
                /* Add back in missing bits of ID for non-USI pens */
                wacom->id[0] |= (wacom->serial[0] >> 32) & 0xFFFFF;
        }

        /* number of valid frames */
        for (i = 0; i < pen_frames; i++) {
                unsigned char *frame = &data[i*pen_frame_len + 1];
                bool valid = frame[0] & 0x80;

                if (valid)
                        number_of_valid_frames++;
        }

        if (number_of_valid_frames) {
                if (wacom->hid_data.time_delayed)
                        time_interval = ktime_get() - wacom->hid_data.time_delayed;
                time_interval = div_u64(time_interval, number_of_valid_frames);
                wacom->hid_data.time_delayed = time_packet_received;
        }

        for (i = 0; i < number_of_valid_frames; i++) {
                unsigned char *frame = &data[i*pen_frame_len + 1];
                bool valid = frame[0] & 0x80;
                bool prox = frame[0] & 0x40;
                bool range = frame[0] & 0x20;
                bool invert = frame[0] & 0x10;
                int frames_number_reversed = number_of_valid_frames - i - 1;
                ktime_t event_timestamp = time_packet_received - frames_number_reversed * time_interval;

                if (!valid)
                        continue;

                if (!prox) {
                        wacom->shared->stylus_in_proximity = false;
                        wacom_exit_report(wacom);
                        input_sync(pen_input);

                        wacom->tool[0] = 0;
                        wacom->id[0] = 0;
                        wacom->serial[0] = 0;
                        wacom->hid_data.time_delayed = 0;
                        return;
                }

                if (range) {
                        if (!wacom->tool[0]) { /* first in range */
                                /* Going into range select tool */
                                if (invert)
                                        wacom->tool[0] = BTN_TOOL_RUBBER;
                                else if (wacom->id[0])
                                        wacom->tool[0] = wacom_intuos_get_tool_type(wacom->id[0]);
                                else
                                        wacom->tool[0] = BTN_TOOL_PEN;
                        }

                        input_report_abs(pen_input, ABS_X, get_unaligned_le16(&frame[1]));
                        input_report_abs(pen_input, ABS_Y, get_unaligned_le16(&frame[3]));

                        if (wacom->features.type == INTUOSP2_BT ||
                            wacom->features.type == INTUOSP2S_BT) {
                                /* Fix rotation alignment: userspace expects zero at left */
                                int16_t rotation =
                                        (int16_t)get_unaligned_le16(&frame[9]);
                                rotation += 1800/4;

                                if (rotation > 899)
                                        rotation -= 1800;

                                input_report_abs(pen_input, ABS_TILT_X,
                                                 (signed char)frame[7]);
                                input_report_abs(pen_input, ABS_TILT_Y,
                                                 (signed char)frame[8]);
                                input_report_abs(pen_input, ABS_Z, rotation);
                                input_report_abs(pen_input, ABS_WHEEL,
                                                 get_unaligned_le16(&frame[11]));
                        }
                }

                if (wacom->tool[0]) {
                        input_report_abs(pen_input, ABS_PRESSURE, get_unaligned_le16(&frame[5]));
                        if (wacom->features.type == INTUOSP2_BT ||
                            wacom->features.type == INTUOSP2S_BT) {
                                input_report_abs(pen_input, ABS_DISTANCE,
                                                 range ? frame[13] : wacom->features.distance_max);
                        } else {
                                input_report_abs(pen_input, ABS_DISTANCE,
                                                 range ? frame[7] : wacom->features.distance_max);
                        }

                        input_report_key(pen_input, BTN_TOUCH, frame[0] & 0x09);
                        input_report_key(pen_input, BTN_STYLUS, frame[0] & 0x02);
                        input_report_key(pen_input, BTN_STYLUS2, frame[0] & 0x04);

                        input_report_key(pen_input, wacom->tool[0], prox);
                        input_event(pen_input, EV_MSC, MSC_SERIAL, wacom->serial[0]);
                        input_report_abs(pen_input, ABS_MISC,
                                         wacom_intuos_id_mangle(wacom->id[0])); /* report tool id */
                }

                wacom->shared->stylus_in_proximity = prox;

                /* add timestamp to unpack the frames */
                input_set_timestamp(pen_input, event_timestamp);

                input_sync(pen_input);
        }
}

static void wacom_intuos_pro2_bt_touch(struct wacom_wac *wacom)
{
        const int finger_touch_len = 8;
        const int finger_frames = 4;
        const int finger_frame_len = 43;

        struct input_dev *touch_input = wacom->touch_input;
        unsigned char *data = wacom->data;
        int num_contacts_left = 5;
        int i, j;

        for (i = 0; i < finger_frames; i++) {
                unsigned char *frame = &data[i*finger_frame_len + 109];
                int current_num_contacts = frame[0] & 0x7F;
                int contacts_to_send;

                if (!(frame[0] & 0x80))
                        continue;

                /*
                 * First packet resets the counter since only the first
                 * packet in series will have non-zero current_num_contacts.
                 */
                if (current_num_contacts)
                        wacom->num_contacts_left = current_num_contacts;

                contacts_to_send = min(num_contacts_left, wacom->num_contacts_left);

                for (j = 0; j < contacts_to_send; j++) {
                        unsigned char *touch = &frame[j*finger_touch_len + 1];
                        int slot = input_mt_get_slot_by_key(touch_input, touch[0]);
                        int x = get_unaligned_le16(&touch[2]);
                        int y = get_unaligned_le16(&touch[4]);
                        int w = touch[6] * input_abs_get_res(touch_input, ABS_MT_POSITION_X);
                        int h = touch[7] * input_abs_get_res(touch_input, ABS_MT_POSITION_Y);

                        if (slot < 0)
                                continue;

                        input_mt_slot(touch_input, slot);
                        input_mt_report_slot_state(touch_input, MT_TOOL_FINGER, touch[1] & 0x01);
                        input_report_abs(touch_input, ABS_MT_POSITION_X, x);
                        input_report_abs(touch_input, ABS_MT_POSITION_Y, y);
                        input_report_abs(touch_input, ABS_MT_TOUCH_MAJOR, max(w, h));
                        input_report_abs(touch_input, ABS_MT_TOUCH_MINOR, min(w, h));
                        input_report_abs(touch_input, ABS_MT_ORIENTATION, w > h);
                }

                input_mt_sync_frame(touch_input);

                wacom->num_contacts_left -= contacts_to_send;
                if (wacom->num_contacts_left <= 0) {
                        wacom->num_contacts_left = 0;
                        wacom->shared->touch_down = wacom_wac_finger_count_touches(wacom);
                        input_sync(touch_input);
                }
        }

        if (wacom->num_contacts_left == 0) {
                // Be careful that we don't accidentally call input_sync with
                // only a partial set of fingers of processed
                input_report_switch(touch_input, SW_MUTE_DEVICE, !(data[281] >> 7));
                input_sync(touch_input);
        }

}

static void wacom_intuos_pro2_bt_pad(struct wacom_wac *wacom)
{
        struct input_dev *pad_input = wacom->pad_input;
        unsigned char *data = wacom->data;
        int nbuttons = wacom->features.numbered_buttons;

        int expresskeys = data[282];
        int center = (data[281] & 0x40) >> 6;
        int ring = data[285] & 0x7F;
        bool ringstatus = data[285] & 0x80;
        bool prox = expresskeys || center || ringstatus;

        /* Fix touchring data: userspace expects 0 at left and increasing clockwise */
        ring = 71 - ring;
        ring += 3*72/16;
        if (ring > 71)
                ring -= 72;

        wacom_report_numbered_buttons(pad_input, nbuttons,
                                      expresskeys | (center << (nbuttons - 1)));

        input_report_abs(pad_input, ABS_WHEEL, ringstatus ? ring : 0);

        input_report_key(pad_input, wacom->tool[1], prox ? 1 : 0);
        input_report_abs(pad_input, ABS_MISC, prox ? PAD_DEVICE_ID : 0);
        input_event(pad_input, EV_MSC, MSC_SERIAL, 0xffffffff);

        input_sync(pad_input);
}

static void wacom_intuos_pro2_bt_battery(struct wacom_wac *wacom)
{
        unsigned char *data = wacom->data;

        bool chg = data[284] & 0x80;
        int battery_status = data[284] & 0x7F;

        wacom_notify_battery(wacom, WACOM_POWER_SUPPLY_STATUS_AUTO,
                             battery_status, chg, 1, chg);
}

static void wacom_intuos_gen3_bt_pad(struct wacom_wac *wacom)
{
        struct input_dev *pad_input = wacom->pad_input;
        unsigned char *data = wacom->data;

        int buttons = data[44];

        wacom_report_numbered_buttons(pad_input, 4, buttons);

        input_report_key(pad_input, wacom->tool[1], buttons ? 1 : 0);
        input_report_abs(pad_input, ABS_MISC, buttons ? PAD_DEVICE_ID : 0);
        input_event(pad_input, EV_MSC, MSC_SERIAL, 0xffffffff);

        input_sync(pad_input);
}

static void wacom_intuos_gen3_bt_battery(struct wacom_wac *wacom)
{
        unsigned char *data = wacom->data;

        bool chg = data[45] & 0x80;
        int battery_status = data[45] & 0x7F;

        wacom_notify_battery(wacom, WACOM_POWER_SUPPLY_STATUS_AUTO,
                             battery_status, chg, 1, chg);
}

static int wacom_intuos_pro2_bt_irq(struct wacom_wac *wacom, size_t len)
{
        unsigned char *data = wacom->data;

        if (data[0] != 0x80 && data[0] != 0x81) {
                dev_dbg(wacom->pen_input->dev.parent,
                        "%s: received unknown report #%d\n", __func__, data[0]);
                return 0;
        }

        wacom_intuos_pro2_bt_pen(wacom);
        if (wacom->features.type == INTUOSP2_BT ||
            wacom->features.type == INTUOSP2S_BT) {
                wacom_intuos_pro2_bt_touch(wacom);
                wacom_intuos_pro2_bt_pad(wacom);
                wacom_intuos_pro2_bt_battery(wacom);
        } else {
                wacom_intuos_gen3_bt_pad(wacom);
                wacom_intuos_gen3_bt_battery(wacom);
        }
        return 0;
}

static int wacom_24hdt_irq(struct wacom_wac *wacom)
{
        struct input_dev *input = wacom->touch_input;
        unsigned char *data = wacom->data;
        int i;
        int current_num_contacts = data[61];
        int contacts_to_send = 0;
        int num_contacts_left = 4; /* maximum contacts per packet */
        int byte_per_packet = WACOM_BYTES_PER_24HDT_PACKET;
        int y_offset = 2;

        if (touch_is_muted(wacom) && !wacom->shared->touch_down)
                return 0;

        if (wacom->features.type == WACOM_27QHDT) {
                current_num_contacts = data[63];
                num_contacts_left = 10;
                byte_per_packet = WACOM_BYTES_PER_QHDTHID_PACKET;
                y_offset = 0;
        }

        /*
         * First packet resets the counter since only the first
         * packet in series will have non-zero current_num_contacts.
         */
        if (current_num_contacts)
                wacom->num_contacts_left = current_num_contacts;

        contacts_to_send = min(num_contacts_left, wacom->num_contacts_left);

        for (i = 0; i < contacts_to_send; i++) {
                int offset = (byte_per_packet * i) + 1;
                bool touch = (data[offset] & 0x1) && report_touch_events(wacom);
                int slot = input_mt_get_slot_by_key(input, data[offset + 1]);

                if (slot < 0)
                        continue;
                input_mt_slot(input, slot);
                input_mt_report_slot_state(input, MT_TOOL_FINGER, touch);

                if (touch) {
                        int t_x = get_unaligned_le16(&data[offset + 2]);
                        int t_y = get_unaligned_le16(&data[offset + 4 + y_offset]);

                        input_report_abs(input, ABS_MT_POSITION_X, t_x);
                        input_report_abs(input, ABS_MT_POSITION_Y, t_y);

                        if (wacom->features.type != WACOM_27QHDT) {
                                int c_x = get_unaligned_le16(&data[offset + 4]);
                                int c_y = get_unaligned_le16(&data[offset + 8]);
                                int w = get_unaligned_le16(&data[offset + 10]);
                                int h = get_unaligned_le16(&data[offset + 12]);

                                input_report_abs(input, ABS_MT_TOUCH_MAJOR, min(w,h));
                                input_report_abs(input, ABS_MT_WIDTH_MAJOR,
                                                 min(w, h) + int_dist(t_x, t_y, c_x, c_y));
                                input_report_abs(input, ABS_MT_WIDTH_MINOR, min(w, h));
                                input_report_abs(input, ABS_MT_ORIENTATION, w > h);
                        }
                }
        }
        input_mt_sync_frame(input);

        wacom->num_contacts_left -= contacts_to_send;
        if (wacom->num_contacts_left <= 0) {
                wacom->num_contacts_left = 0;
                wacom->shared->touch_down = wacom_wac_finger_count_touches(wacom);
        }
        return 1;
}

static int wacom_mt_touch(struct wacom_wac *wacom)
{
        struct input_dev *input = wacom->touch_input;
        unsigned char *data = wacom->data;
        int i;
        int current_num_contacts = data[2];
        int contacts_to_send = 0;
        int x_offset = 0;

        /* MTTPC does not support Height and Width */
        if (wacom->features.type == MTTPC || wacom->features.type == MTTPC_B)
                x_offset = -4;

        /*
         * First packet resets the counter since only the first
         * packet in series will have non-zero current_num_contacts.
         */
        if (current_num_contacts)
                wacom->num_contacts_left = current_num_contacts;

        /* There are at most 5 contacts per packet */
        contacts_to_send = min(5, wacom->num_contacts_left);

        for (i = 0; i < contacts_to_send; i++) {
                int offset = (WACOM_BYTES_PER_MT_PACKET + x_offset) * i + 3;
                bool touch = (data[offset] & 0x1) && report_touch_events(wacom);
                int id = get_unaligned_le16(&data[offset + 1]);
                int slot = input_mt_get_slot_by_key(input, id);

                if (slot < 0)
                        continue;

                input_mt_slot(input, slot);
                input_mt_report_slot_state(input, MT_TOOL_FINGER, touch);
                if (touch) {
                        int x = get_unaligned_le16(&data[offset + x_offset + 7]);
                        int y = get_unaligned_le16(&data[offset + x_offset + 9]);
                        input_report_abs(input, ABS_MT_POSITION_X, x);
                        input_report_abs(input, ABS_MT_POSITION_Y, y);
                }
        }
        input_mt_sync_frame(input);

        wacom->num_contacts_left -= contacts_to_send;
        if (wacom->num_contacts_left <= 0) {
                wacom->num_contacts_left = 0;
                wacom->shared->touch_down = wacom_wac_finger_count_touches(wacom);
        }
        return 1;
}

static int wacom_tpc_mt_touch(struct wacom_wac *wacom)
{
        struct input_dev *input = wacom->touch_input;
        unsigned char *data = wacom->data;
        int i;

        for (i = 0; i < 2; i++) {
                int p = data[1] & (1 << i);
                bool touch = p && report_touch_events(wacom);

                input_mt_slot(input, i);
                input_mt_report_slot_state(input, MT_TOOL_FINGER, touch);
                if (touch) {
                        int x = le16_to_cpup((__le16 *)&data[i * 2 + 2]) & 0x7fff;
                        int y = le16_to_cpup((__le16 *)&data[i * 2 + 6]) & 0x7fff;

                        input_report_abs(input, ABS_MT_POSITION_X, x);
                        input_report_abs(input, ABS_MT_POSITION_Y, y);
                }
        }
        input_mt_sync_frame(input);

        /* keep touch state for pen event */
        wacom->shared->touch_down = wacom_wac_finger_count_touches(wacom);

        return 1;
}

static int wacom_tpc_single_touch(struct wacom_wac *wacom, size_t len)
{
        unsigned char *data = wacom->data;
        struct input_dev *input = wacom->touch_input;
        bool prox = report_touch_events(wacom);
        int x = 0, y = 0;

        if (wacom->features.touch_max > 1 || len > WACOM_PKGLEN_TPC2FG)
                return 0;

        if (len == WACOM_PKGLEN_TPC1FG) {
                prox = prox && (data[0] & 0x01);
                x = get_unaligned_le16(&data[1]);
                y = get_unaligned_le16(&data[3]);
        } else if (len == WACOM_PKGLEN_TPC1FG_B) {
                prox = prox && (data[2] & 0x01);
                x = get_unaligned_le16(&data[3]);
                y = get_unaligned_le16(&data[5]);
        } else {
                prox = prox && (data[1] & 0x01);
                x = le16_to_cpup((__le16 *)&data[2]);
                y = le16_to_cpup((__le16 *)&data[4]);
        }

        if (prox) {
                input_report_abs(input, ABS_X, x);
                input_report_abs(input, ABS_Y, y);
        }
        input_report_key(input, BTN_TOUCH, prox);

        /* keep touch state for pen events */
        wacom->shared->touch_down = prox;

        return 1;
}

static int wacom_tpc_pen(struct wacom_wac *wacom)
{
        unsigned char *data = wacom->data;
        struct input_dev *input = wacom->pen_input;
        bool prox = data[1] & 0x20;

        if (!wacom->shared->stylus_in_proximity) /* first in prox */
                /* Going into proximity select tool */
                wacom->tool[0] = (data[1] & 0x0c) ? BTN_TOOL_RUBBER : BTN_TOOL_PEN;

        /* keep pen state for touch events */
        wacom->shared->stylus_in_proximity = prox;

        /* send pen events only when touch is up or forced out
         * or touch arbitration is off
         */
        if (!delay_pen_events(wacom)) {
                input_report_key(input, BTN_STYLUS, data[1] & 0x02);
                input_report_key(input, BTN_STYLUS2, data[1] & 0x10);
                input_report_abs(input, ABS_X, le16_to_cpup((__le16 *)&data[2]));
                input_report_abs(input, ABS_Y, le16_to_cpup((__le16 *)&data[4]));
                input_report_abs(input, ABS_PRESSURE, ((data[7] & 0x07) << 8) | data[6]);
                input_report_key(input, BTN_TOUCH, data[1] & 0x05);
                input_report_key(input, wacom->tool[0], prox);
                return 1;
        }

        return 0;
}

static int wacom_tpc_irq(struct wacom_wac *wacom, size_t len)
{
        unsigned char *data = wacom->data;

        if (wacom->pen_input) {
                dev_dbg(wacom->pen_input->dev.parent,
                        "%s: received report #%d\n", __func__, data[0]);

                if (len == WACOM_PKGLEN_PENABLED ||
                    data[0] == WACOM_REPORT_PENABLED)
                        return wacom_tpc_pen(wacom);
        }
        else if (wacom->touch_input) {
                dev_dbg(wacom->touch_input->dev.parent,
                        "%s: received report #%d\n", __func__, data[0]);

                switch (len) {
                case WACOM_PKGLEN_TPC1FG:
                        return wacom_tpc_single_touch(wacom, len);

                case WACOM_PKGLEN_TPC2FG:
                        return wacom_tpc_mt_touch(wacom);

                default:
                        switch (data[0]) {
                        case WACOM_REPORT_TPC1FG:
                        case WACOM_REPORT_TPCHID:
                        case WACOM_REPORT_TPCST:
                        case WACOM_REPORT_TPC1FGE:
                                return wacom_tpc_single_touch(wacom, len);

                        case WACOM_REPORT_TPCMT:
                        case WACOM_REPORT_TPCMT2:
                                return wacom_mt_touch(wacom);

                        }
                }
        }

        return 0;
}

static int wacom_offset_rotation(struct input_dev *input, struct hid_usage *usage,
                                 int value, int num, int denom)
{
        struct input_absinfo *abs = &input->absinfo[usage->code];
        int range = (abs->maximum - abs->minimum + 1);

        value += num*range/denom;
        if (value > abs->maximum)
                value -= range;
        else if (value < abs->minimum)
                value += range;
        return value;
}

int wacom_equivalent_usage(int usage)
{
        if ((usage & HID_USAGE_PAGE) == WACOM_HID_UP_WACOMDIGITIZER) {
                int subpage = (usage & 0xFF00) << 8;
                int subusage = (usage & 0xFF);

                if (subpage == WACOM_HID_SP_PAD ||
                    subpage == WACOM_HID_SP_BUTTON ||
                    subpage == WACOM_HID_SP_DIGITIZER ||
                    subpage == WACOM_HID_SP_DIGITIZERINFO ||
                    usage == WACOM_HID_WD_SENSE ||
                    usage == WACOM_HID_WD_SERIALHI ||
                    usage == WACOM_HID_WD_TOOLTYPE ||
                    usage == WACOM_HID_WD_DISTANCE ||
                    usage == WACOM_HID_WD_TOUCHSTRIP ||
                    usage == WACOM_HID_WD_TOUCHSTRIP2 ||
                    usage == WACOM_HID_WD_TOUCHRING ||
                    usage == WACOM_HID_WD_TOUCHRINGSTATUS ||
                    usage == WACOM_HID_WD_REPORT_VALID ||
                    usage == WACOM_HID_WD_BARRELSWITCH3 ||
                    usage == WACOM_HID_WD_SEQUENCENUMBER) {
                        return usage;
                }

                if (subpage == HID_UP_UNDEFINED)
                        subpage = HID_UP_DIGITIZER;

                return subpage | subusage;
        }

        if ((usage & HID_USAGE_PAGE) == WACOM_HID_UP_WACOMTOUCH) {
                int subpage = (usage & 0xFF00) << 8;
                int subusage = (usage & 0xFF);

                if (usage == WACOM_HID_WT_REPORT_VALID)
                        return usage;

                if (subpage == HID_UP_UNDEFINED)
                        subpage = WACOM_HID_SP_DIGITIZER;

                return subpage | subusage;
        }

        return usage;
}

static void wacom_map_usage(struct input_dev *input, struct hid_usage *usage,
                struct hid_field *field, __u8 type, __u16 code, int fuzz)
{
        struct wacom *wacom = input_get_drvdata(input);
        struct wacom_wac *wacom_wac = &wacom->wacom_wac;
        struct wacom_features *features = &wacom_wac->features;
        int fmin = field->logical_minimum;
        int fmax = field->logical_maximum;
        unsigned int equivalent_usage = wacom_equivalent_usage(usage->hid);
        int resolution_code = code;
        int resolution;

        if (equivalent_usage == HID_DG_TWIST) {
                resolution_code = ABS_RZ;
        }

        resolution = hidinput_calc_abs_res(field, resolution_code);

        if (equivalent_usage == HID_GD_X) {
                fmin += features->offset_left;
                fmax -= features->offset_right;
        }
        if (equivalent_usage == HID_GD_Y) {
                fmin += features->offset_top;
                fmax -= features->offset_bottom;
        }

        usage->type = type;
        usage->code = code;

        switch (type) {
        case EV_ABS:
                input_set_abs_params(input, code, fmin, fmax, fuzz, 0);

                /* older tablet may miss physical usage */
                if ((code == ABS_X || code == ABS_Y) && !resolution) {
                        resolution = WACOM_INTUOS_RES;
                        hid_warn(input,
                                 "Using default resolution for axis type 0x%x code 0x%x\n",
                                 type, code);
                }
                input_abs_set_res(input, code, resolution);
                break;
        case EV_REL:
        case EV_KEY:
        case EV_MSC:
        case EV_SW:
                input_set_capability(input, type, code);
                break;
        }
}

static void wacom_wac_battery_usage_mapping(struct hid_device *hdev,
                struct hid_field *field, struct hid_usage *usage)
{
        return;
}

static void wacom_wac_battery_event(struct hid_device *hdev, struct hid_field *field,
                struct hid_usage *usage, __s32 value)
{
        struct wacom *wacom = hid_get_drvdata(hdev);
        struct wacom_wac *wacom_wac = &wacom->wacom_wac;
        unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);

        switch (equivalent_usage) {
        case HID_DG_BATTERYSTRENGTH:
                if (value == 0) {
                        wacom_wac->hid_data.bat_status = POWER_SUPPLY_STATUS_UNKNOWN;
                }
                else {
                        value = value * 100 / (field->logical_maximum - field->logical_minimum);
                        wacom_wac->hid_data.battery_capacity = value;
                        wacom_wac->hid_data.bat_connected = 1;
                        wacom_wac->hid_data.bat_status = WACOM_POWER_SUPPLY_STATUS_AUTO;
                }
                wacom_wac->features.quirks |= WACOM_QUIRK_BATTERY;
                break;
        case WACOM_HID_WD_BATTERY_LEVEL:
                value = value * 100 / (field->logical_maximum - field->logical_minimum);
                wacom_wac->hid_data.battery_capacity = value;
                wacom_wac->hid_data.bat_connected = 1;
                wacom_wac->hid_data.bat_status = WACOM_POWER_SUPPLY_STATUS_AUTO;
                wacom_wac->features.quirks |= WACOM_QUIRK_BATTERY;
                break;
        case WACOM_HID_WD_BATTERY_CHARGING:
                wacom_wac->hid_data.bat_charging = value;
                wacom_wac->hid_data.ps_connected = value;
                wacom_wac->hid_data.bat_connected = 1;
                wacom_wac->hid_data.bat_status = WACOM_POWER_SUPPLY_STATUS_AUTO;
                wacom_wac->features.quirks |= WACOM_QUIRK_BATTERY;
                break;
        }
}

static void wacom_wac_battery_pre_report(struct hid_device *hdev,
                struct hid_report *report)
{
        return;
}

static void wacom_wac_battery_report(struct hid_device *hdev,
                struct hid_report *report)
{
        struct wacom *wacom = hid_get_drvdata(hdev);
        struct wacom_wac *wacom_wac = &wacom->wacom_wac;

        int status = wacom_wac->hid_data.bat_status;
        int capacity = wacom_wac->hid_data.battery_capacity;
        bool charging = wacom_wac->hid_data.bat_charging;
        bool connected = wacom_wac->hid_data.bat_connected;
        bool powered = wacom_wac->hid_data.ps_connected;

        wacom_notify_battery(wacom_wac, status, capacity, charging,
                             connected, powered);
}

static void wacom_wac_pad_usage_mapping(struct hid_device *hdev,
                struct hid_field *field, struct hid_usage *usage)
{
        struct wacom *wacom = hid_get_drvdata(hdev);
        struct wacom_wac *wacom_wac = &wacom->wacom_wac;
        struct wacom_features *features = &wacom_wac->features;
        struct input_dev *input = wacom_wac->pad_input;
        unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);

        switch (equivalent_usage) {
        case WACOM_HID_WD_ACCELEROMETER_X:
                __set_bit(INPUT_PROP_ACCELEROMETER, input->propbit);
                wacom_map_usage(input, usage, field, EV_ABS, ABS_X, 0);
                features->device_type |= WACOM_DEVICETYPE_PAD;
                break;
        case WACOM_HID_WD_ACCELEROMETER_Y:
                __set_bit(INPUT_PROP_ACCELEROMETER, input->propbit);
                wacom_map_usage(input, usage, field, EV_ABS, ABS_Y, 0);
                features->device_type |= WACOM_DEVICETYPE_PAD;
                break;
        case WACOM_HID_WD_ACCELEROMETER_Z:
                __set_bit(INPUT_PROP_ACCELEROMETER, input->propbit);
                wacom_map_usage(input, usage, field, EV_ABS, ABS_Z, 0);
                features->device_type |= WACOM_DEVICETYPE_PAD;
                break;
        case WACOM_HID_WD_BUTTONCENTER:
        case WACOM_HID_WD_BUTTONHOME:
        case WACOM_HID_WD_BUTTONUP:
        case WACOM_HID_WD_BUTTONDOWN:
        case WACOM_HID_WD_BUTTONLEFT:
        case WACOM_HID_WD_BUTTONRIGHT:
                wacom_map_usage(input, usage, field, EV_KEY,
                                wacom_numbered_button_to_key(features->numbered_buttons),
                                0);
                features->numbered_buttons++;
                features->device_type |= WACOM_DEVICETYPE_PAD;
                break;
        case WACOM_HID_WD_MUTE_DEVICE:
                /* softkey touch switch */
                wacom_wac->is_soft_touch_switch = true;
                fallthrough;
        case WACOM_HID_WD_TOUCHONOFF:
                /*
                 * These two usages, which are used to mute touch events, come
                 * from the pad packet, but are reported on the touch
                 * interface. Because the touch interface may not have
                 * been created yet, we cannot call wacom_map_usage(). In
                 * order to process the usages when we receive them, we set
                 * the usage type and code directly.
                 */
                wacom_wac->has_mute_touch_switch = true;
                usage->type = EV_SW;
                usage->code = SW_MUTE_DEVICE;
                break;
        case WACOM_HID_WD_TOUCHSTRIP:
                wacom_map_usage(input, usage, field, EV_ABS, ABS_RX, 0);
                features->device_type |= WACOM_DEVICETYPE_PAD;
                break;
        case WACOM_HID_WD_TOUCHSTRIP2:
                wacom_map_usage(input, usage, field, EV_ABS, ABS_RY, 0);
                features->device_type |= WACOM_DEVICETYPE_PAD;
                break;
        case WACOM_HID_WD_TOUCHRING:
                if (field->flags & HID_MAIN_ITEM_RELATIVE) {
                        wacom_wac->relring_count++;
                        if (wacom_wac->relring_count == 1) {
                                wacom_map_usage(input, usage, field, EV_REL, REL_WHEEL_HI_RES, 0);
                                set_bit(REL_WHEEL, input->relbit);
                        }
                        else if (wacom_wac->relring_count == 2) {
                                wacom_map_usage(input, usage, field, EV_REL, REL_HWHEEL_HI_RES, 0);
                                set_bit(REL_HWHEEL, input->relbit);
                        }
                } else {
                        wacom_wac->absring_count++;
                        if (wacom_wac->absring_count == 1)
                                wacom_map_usage(input, usage, field, EV_ABS, ABS_WHEEL, 0);
                        else if (wacom_wac->absring_count == 2)
                                wacom_map_usage(input, usage, field, EV_ABS, ABS_THROTTLE, 0);
                }
                features->device_type |= WACOM_DEVICETYPE_PAD;
                break;
        case WACOM_HID_WD_TOUCHRINGSTATUS:
                /*
                 * Only set up type/code association. Completely mapping
                 * this usage may overwrite the axis resolution and range.
                 */
                usage->type = EV_ABS;
                usage->code = ABS_WHEEL;
                set_bit(EV_ABS, input->evbit);
                features->device_type |= WACOM_DEVICETYPE_PAD;
                break;
        case WACOM_HID_WD_BUTTONCONFIG:
                wacom_map_usage(input, usage, field, EV_KEY, KEY_BUTTONCONFIG, 0);
                features->device_type |= WACOM_DEVICETYPE_PAD;
                break;
        case WACOM_HID_WD_ONSCREEN_KEYBOARD:
                wacom_map_usage(input, usage, field, EV_KEY, KEY_ONSCREEN_KEYBOARD, 0);
                features->device_type |= WACOM_DEVICETYPE_PAD;
                break;
        case WACOM_HID_WD_CONTROLPANEL:
                wacom_map_usage(input, usage, field, EV_KEY, KEY_CONTROLPANEL, 0);
                features->device_type |= WACOM_DEVICETYPE_PAD;
                break;
        case WACOM_HID_WD_MODE_CHANGE:
                /* do not overwrite previous data */
                if (!wacom_wac->has_mode_change) {
                        wacom_wac->has_mode_change = true;
                        wacom_wac->is_direct_mode = true;
                }
                features->device_type |= WACOM_DEVICETYPE_PAD;
                break;
        }

        switch (equivalent_usage & 0xfffffff0) {
        case WACOM_HID_WD_EXPRESSKEY00:
                wacom_map_usage(input, usage, field, EV_KEY,
                                wacom_numbered_button_to_key(features->numbered_buttons),
                                0);
                features->numbered_buttons++;
                features->device_type |= WACOM_DEVICETYPE_PAD;
                break;
        }
}

static void wacom_wac_pad_event(struct hid_device *hdev, struct hid_field *field,
                struct hid_usage *usage, __s32 value)
{
        struct wacom *wacom = hid_get_drvdata(hdev);
        struct wacom_wac *wacom_wac = &wacom->wacom_wac;
        struct input_dev *input = wacom_wac->pad_input;
        struct wacom_features *features = &wacom_wac->features;
        unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);
        int i;
        bool do_report = false;

        /*
         * Avoid reporting this event and setting inrange_state if this usage
         * hasn't been mapped.
         */
        if (!usage->type && equivalent_usage != WACOM_HID_WD_MODE_CHANGE)
                return;

        if (wacom_equivalent_usage(field->physical) == HID_DG_TABLETFUNCTIONKEY) {
                bool is_abs_touchring = usage->hid == WACOM_HID_WD_TOUCHRING &&
                                        !(field->flags & HID_MAIN_ITEM_RELATIVE);

                if (!is_abs_touchring)
                        wacom_wac->hid_data.inrange_state |= value;
        }

        /* Process touch switch state first since it is reported through touch interface,
         * which is indepentent of pad interface. In the case when there are no other pad
         * events, the pad interface will not even be created.
         */
        if ((equivalent_usage == WACOM_HID_WD_MUTE_DEVICE) ||
           (equivalent_usage == WACOM_HID_WD_TOUCHONOFF)) {
                if (wacom_wac->shared->touch_input) {
                        bool *is_touch_on = &wacom_wac->shared->is_touch_on;

                        if (equivalent_usage == WACOM_HID_WD_MUTE_DEVICE && value)
                                *is_touch_on = !(*is_touch_on);
                        else if (equivalent_usage == WACOM_HID_WD_TOUCHONOFF)
                                *is_touch_on = value;

                        input_report_switch(wacom_wac->shared->touch_input,
                                            SW_MUTE_DEVICE, !(*is_touch_on));
                        input_sync(wacom_wac->shared->touch_input);
                }
                return;
        }

        if (!input)
                return;

        switch (equivalent_usage) {
        case WACOM_HID_WD_TOUCHRING:
                /*
                 * Userspace expects touchrings to increase in value with
                 * clockwise gestures and have their zero point at the
                 * tablet's left. HID events "should" be clockwise-
                 * increasing and zero at top, though the MobileStudio
                 * Pro and 2nd-gen Intuos Pro don't do this...
                 */
                if (hdev->vendor == 0x56a &&
                    (hdev->product == 0x34d || hdev->product == 0x34e ||  /* MobileStudio Pro */
                     hdev->product == 0x357 || hdev->product == 0x358 ||  /* Intuos Pro 2 */
                     hdev->product == 0x392 ||                            /* Intuos Pro 2 */
                     hdev->product == 0x398 || hdev->product == 0x399 ||  /* MobileStudio Pro */
                     hdev->product == 0x3AA)) {                           /* MobileStudio Pro */
                        value = (field->logical_maximum - value);

                        if (hdev->product == 0x357 || hdev->product == 0x358 ||
                            hdev->product == 0x392)
                                value = wacom_offset_rotation(input, usage, value, 3, 16);
                        else if (hdev->product == 0x34d || hdev->product == 0x34e ||
                                 hdev->product == 0x398 || hdev->product == 0x399 ||
                                 hdev->product == 0x3AA)
                                value = wacom_offset_rotation(input, usage, value, 1, 2);
                }
                else if (field->flags & HID_MAIN_ITEM_RELATIVE) {
                        int hires_value = value * 120 / usage->resolution_multiplier;
                        int *ring_value;
                        int lowres_code;

                        if (usage->code == REL_WHEEL_HI_RES) {
                                /* We must invert the sign for vertical
                                 * relative scrolling. Clockwise
                                 * rotation produces positive values
                                 * from HW, but userspace treats
                                 * positive REL_WHEEL as a scroll *up*!
                                 */
                                hires_value = -hires_value;
                                ring_value = &wacom_wac->hid_data.ring_value;
                                lowres_code = REL_WHEEL;
                        }
                        else if (usage->code == REL_HWHEEL_HI_RES) {
                                /* No need to invert the sign for
                                 * horizontal relative scrolling.
                                 * Clockwise rotation produces positive
                                 * values from HW and userspace treats
                                 * positive REL_HWHEEL as a scroll
                                 * right.
                                 */
                                ring_value = &wacom_wac->hid_data.ring2_value;
                                lowres_code = REL_HWHEEL;
                        }
                        else {
                                hid_err(wacom->hdev, "unrecognized relative wheel with code %d\n",
                                        usage->code);
                                break;
                        }

                        value = hires_value;
                        *ring_value += hires_value;

                        /* Emulate a legacy wheel click for every 120
                         * units of hi-res travel.
                         */
                        if (*ring_value >= 120 || *ring_value <= -120) {
                                int clicks = *ring_value / 120;

                                input_event(input, usage->type, lowres_code, clicks);
                                *ring_value -= clicks * 120;
                        }
                }
                else {
                        value = wacom_offset_rotation(input, usage, value, 1, 4);
                }
                do_report = true;
                break;
        case WACOM_HID_WD_TOUCHRINGSTATUS:
                if (!value)
                        input_event(input, usage->type, usage->code, 0);
                break;

        case WACOM_HID_WD_MODE_CHANGE:
                if (wacom_wac->is_direct_mode != value) {
                        wacom_wac->is_direct_mode = value;
                        wacom_schedule_work(&wacom->wacom_wac, WACOM_WORKER_MODE_CHANGE);
                }
                break;

        case WACOM_HID_WD_BUTTONCENTER:
                for (i = 0; i < wacom->led.count; i++)
                        wacom_update_led(wacom, features->numbered_buttons,
                                         value, i);
                fallthrough;
        default:
                do_report = true;
                break;
        }

        if (do_report) {
                input_event(input, usage->type, usage->code, value);
                if (value)
                        wacom_wac->hid_data.pad_input_event_flag = true;
        }
}

static void wacom_wac_pad_pre_report(struct hid_device *hdev,
                struct hid_report *report)
{
        struct wacom *wacom = hid_get_drvdata(hdev);
        struct wacom_wac *wacom_wac = &wacom->wacom_wac;

        wacom_wac->hid_data.inrange_state = 0;
}

static void wacom_wac_pad_report(struct hid_device *hdev,
                struct hid_report *report, struct hid_field *field)
{
        struct wacom *wacom = hid_get_drvdata(hdev);
        struct wacom_wac *wacom_wac = &wacom->wacom_wac;
        struct input_dev *input = wacom_wac->pad_input;
        bool active = wacom_wac->hid_data.inrange_state != 0;

        /* report prox for expresskey events */
        if (wacom_wac->hid_data.pad_input_event_flag) {
                input_event(input, EV_ABS, ABS_MISC, active ? PAD_DEVICE_ID : 0);
                input_sync(input);
                if (!active)
                        wacom_wac->hid_data.pad_input_event_flag = false;
        }
}

static void wacom_set_barrel_switch3_usage(struct wacom_wac *wacom_wac)
{
        struct input_dev *input = wacom_wac->pen_input;
        struct wacom_features *features = &wacom_wac->features;

        if (!(features->quirks & WACOM_QUIRK_AESPEN) &&
            wacom_wac->hid_data.barrelswitch &&
            wacom_wac->hid_data.barrelswitch2 &&
            wacom_wac->hid_data.serialhi &&
            !wacom_wac->hid_data.barrelswitch3) {
                input_set_capability(input, EV_KEY, BTN_STYLUS3);
                features->quirks |= WACOM_QUIRK_PEN_BUTTON3;
        }
}

static void wacom_wac_pen_usage_mapping(struct hid_device *hdev,
                struct hid_field *field, struct hid_usage *usage)
{
        struct wacom *wacom = hid_get_drvdata(hdev);
        struct wacom_wac *wacom_wac = &wacom->wacom_wac;
        struct wacom_features *features = &wacom_wac->features;
        struct input_dev *input = wacom_wac->pen_input;
        unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);

        switch (equivalent_usage) {
        case HID_GD_X:
                wacom_map_usage(input, usage, field, EV_ABS, ABS_X, 4);
                break;
        case HID_GD_Y:
                wacom_map_usage(input, usage, field, EV_ABS, ABS_Y, 4);
                break;
        case WACOM_HID_WD_DISTANCE:
        case HID_GD_Z:
                wacom_map_usage(input, usage, field, EV_ABS, ABS_DISTANCE, 0);
                break;
        case HID_DG_TIPPRESSURE:
                wacom_map_usage(input, usage, field, EV_ABS, ABS_PRESSURE, 0);
                break;
        case HID_DG_INRANGE:
                wacom_map_usage(input, usage, field, EV_KEY, BTN_TOOL_PEN, 0);
                break;
        case HID_DG_INVERT:
                wacom_map_usage(input, usage, field, EV_KEY,
                                BTN_TOOL_RUBBER, 0);
                break;
        case HID_DG_TILT_X:
                wacom_map_usage(input, usage, field, EV_ABS, ABS_TILT_X, 0);
                break;
        case HID_DG_TILT_Y:
                wacom_map_usage(input, usage, field, EV_ABS, ABS_TILT_Y, 0);
                break;
        case HID_DG_TWIST:
                wacom_map_usage(input, usage, field, EV_ABS, ABS_Z, 0);
                break;
        case HID_DG_ERASER:
                input_set_capability(input, EV_KEY, BTN_TOOL_RUBBER);
                wacom_map_usage(input, usage, field, EV_KEY, BTN_TOUCH, 0);
                break;
        case HID_DG_TIPSWITCH:
                input_set_capability(input, EV_KEY, BTN_TOOL_PEN);
                wacom_map_usage(input, usage, field, EV_KEY, BTN_TOUCH, 0);
                break;
        case HID_DG_BARRELSWITCH:
                wacom_wac->hid_data.barrelswitch = true;
                wacom_set_barrel_switch3_usage(wacom_wac);
                wacom_map_usage(input, usage, field, EV_KEY, BTN_STYLUS, 0);
                break;
        case HID_DG_BARRELSWITCH2:
                wacom_wac->hid_data.barrelswitch2 = true;
                wacom_set_barrel_switch3_usage(wacom_wac);
                wacom_map_usage(input, usage, field, EV_KEY, BTN_STYLUS2, 0);
                break;
        case HID_DG_TOOLSERIALNUMBER:
                features->quirks |= WACOM_QUIRK_TOOLSERIAL;
                wacom_map_usage(input, usage, field, EV_MSC, MSC_SERIAL, 0);
                break;
        case HID_DG_SCANTIME:
                wacom_map_usage(input, usage, field, EV_MSC, MSC_TIMESTAMP, 0);
                break;
        case WACOM_HID_WD_SENSE:
                features->quirks |= WACOM_QUIRK_SENSE;
                wacom_map_usage(input, usage, field, EV_KEY, BTN_TOOL_PEN, 0);
                break;
        case WACOM_HID_WD_SERIALHI:
                wacom_wac->hid_data.serialhi = true;
                wacom_set_barrel_switch3_usage(wacom_wac);
                wacom_map_usage(input, usage, field, EV_ABS, ABS_MISC, 0);
                break;
        case WACOM_HID_WD_FINGERWHEEL:
                input_set_capability(input, EV_KEY, BTN_TOOL_AIRBRUSH);
                wacom_map_usage(input, usage, field, EV_ABS, ABS_WHEEL, 0);
                break;
        case WACOM_HID_WD_BARRELSWITCH3:
                wacom_wac->hid_data.barrelswitch3 = true;
                wacom_map_usage(input, usage, field, EV_KEY, BTN_STYLUS3, 0);
                features->quirks &= ~WACOM_QUIRK_PEN_BUTTON3;
                break;
        case WACOM_HID_WD_SEQUENCENUMBER:
                wacom_wac->hid_data.sequence_number = -1;
                break;
        }
}

static void wacom_wac_pen_event(struct hid_device *hdev, struct hid_field *field,
                struct hid_usage *usage, __s32 value)
{
        struct wacom *wacom = hid_get_drvdata(hdev);
        struct wacom_wac *wacom_wac = &wacom->wacom_wac;
        struct wacom_features *features = &wacom_wac->features;
        struct input_dev *input = wacom_wac->pen_input;
        unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);

        if (wacom_wac->is_invalid_bt_frame)
                return;

        switch (equivalent_usage) {
        case HID_GD_Z:
                /*
                 * HID_GD_Z "should increase as the control's position is
                 * moved from high to low", while ABS_DISTANCE instead
                 * increases in value as the tool moves from low to high.
                 */
                value = field->logical_maximum - value;
                break;
        case HID_DG_INRANGE:
                mod_timer(&wacom->idleprox_timer, jiffies + msecs_to_jiffies(100));
                wacom_wac->hid_data.inrange_state = value;
                if (!(features->quirks & WACOM_QUIRK_SENSE))
                        wacom_wac->hid_data.sense_state = value;
                return;
        case HID_DG_INVERT:
                wacom_wac->hid_data.eraser |= value;
                return;
        case HID_DG_ERASER:
                wacom_wac->hid_data.eraser |= value;
                fallthrough;
        case HID_DG_TIPSWITCH:
                wacom_wac->hid_data.tipswitch |= value;
                return;
        case HID_DG_BARRELSWITCH:
                wacom_wac->hid_data.barrelswitch = value;
                return;
        case HID_DG_BARRELSWITCH2:
                wacom_wac->hid_data.barrelswitch2 = value;
                return;
        case HID_DG_TOOLSERIALNUMBER:
                if (value) {
                        wacom_wac->serial[0] = (wacom_wac->serial[0] & ~0xFFFFFFFFULL);
                        wacom_wac->serial[0] |= wacom_s32tou(value, field->report_size);
                }
                return;
        case HID_DG_TWIST:
                /* don't modify the value if the pen doesn't support the feature */
                if (!wacom_is_art_pen(wacom_wac->id[0])) return;

                /*
                 * Userspace expects pen twist to have its zero point when
                 * the buttons/finger is on the tablet's left. HID values
                 * are zero when buttons are toward the top.
                 */
                value = wacom_offset_rotation(input, usage, value, 1, 4);
                break;
        case WACOM_HID_WD_SENSE:
                wacom_wac->hid_data.sense_state = value;
                return;
        case WACOM_HID_WD_SERIALHI:
                if (value) {
                        __u32 raw_value = wacom_s32tou(value, field->report_size);

                        wacom_wac->serial[0] = (wacom_wac->serial[0] & 0xFFFFFFFF);
                        wacom_wac->serial[0] |= ((__u64)raw_value) << 32;
                        /*
                         * Non-USI EMR devices may contain additional tool type
                         * information here. See WACOM_HID_WD_TOOLTYPE case for
                         * more details.
                         */
                        if (value >> 20 == 1) {
                                wacom_wac->id[0] |= raw_value & 0xFFFFF;
                        }
                }
                return;
        case WACOM_HID_WD_TOOLTYPE:
                /*
                 * Some devices (MobileStudio Pro, and possibly later
                 * devices as well) do not return the complete tool
                 * type in their WACOM_HID_WD_TOOLTYPE usage. Use a
                 * bitwise OR so the complete value can be built
                 * up over time :(
                 */
                wacom_wac->id[0] |= wacom_s32tou(value, field->report_size);
                return;
        case WACOM_HID_WD_OFFSETLEFT:
                if (features->offset_left && value != features->offset_left)
                        hid_warn(hdev, "%s: overriding existing left offset "
                                 "%d -> %d\n", __func__, value,
                                 features->offset_left);
                features->offset_left = value;
                return;
        case WACOM_HID_WD_OFFSETRIGHT:
                if (features->offset_right && value != features->offset_right)
                        hid_warn(hdev, "%s: overriding existing right offset "
                                 "%d -> %d\n", __func__, value,
                                 features->offset_right);
                features->offset_right = value;
                return;
        case WACOM_HID_WD_OFFSETTOP:
                if (features->offset_top && value != features->offset_top)
                        hid_warn(hdev, "%s: overriding existing top offset "
                                 "%d -> %d\n", __func__, value,
                                 features->offset_top);
                features->offset_top = value;
                return;
        case WACOM_HID_WD_OFFSETBOTTOM:
                if (features->offset_bottom && value != features->offset_bottom)
                        hid_warn(hdev, "%s: overriding existing bottom offset "
                                 "%d -> %d\n", __func__, value,
                                 features->offset_bottom);
                features->offset_bottom = value;
                return;
        case WACOM_HID_WD_REPORT_VALID:
                wacom_wac->is_invalid_bt_frame = !value;
                return;
        case WACOM_HID_WD_BARRELSWITCH3:
                wacom_wac->hid_data.barrelswitch3 = value;
                return;
        case WACOM_HID_WD_SEQUENCENUMBER:
                if (wacom_wac->hid_data.sequence_number != value &&
                    wacom_wac->hid_data.sequence_number >= 0) {
                        int sequence_size = field->logical_maximum - field->logical_minimum + 1;
                        int drop_count = (value - wacom_wac->hid_data.sequence_number) % sequence_size;
                        hid_warn(hdev, "Dropped %d packets", drop_count);
                }
                wacom_wac->hid_data.sequence_number = value + 1;
                if (wacom_wac->hid_data.sequence_number > field->logical_maximum)
                        wacom_wac->hid_data.sequence_number = field->logical_minimum;
                return;
        }

        /* send pen events only when touch is up or forced out
         * or touch arbitration is off
         */
        if (!usage->type || delay_pen_events(wacom_wac))
                return;

        /* send pen events only when the pen is in range */
        if (wacom_wac->hid_data.inrange_state)
                input_event(input, usage->type, usage->code, value);
        else if (wacom_wac->shared->stylus_in_proximity && !wacom_wac->hid_data.sense_state)
                input_event(input, usage->type, usage->code, 0);
}

static void wacom_wac_pen_pre_report(struct hid_device *hdev,
                struct hid_report *report)
{
        struct wacom *wacom = hid_get_drvdata(hdev);
        struct wacom_wac *wacom_wac = &wacom->wacom_wac;

        wacom_wac->is_invalid_bt_frame = false;
        return;
}

static void wacom_wac_pen_report(struct hid_device *hdev,
                struct hid_report *report)
{
        struct wacom *wacom = hid_get_drvdata(hdev);
        struct wacom_wac *wacom_wac = &wacom->wacom_wac;
        struct input_dev *input = wacom_wac->pen_input;
        bool range = wacom_wac->hid_data.inrange_state;
        bool sense = wacom_wac->hid_data.sense_state;
        bool entering_range = !wacom_wac->tool[0] && range;

        if (wacom_wac->is_invalid_bt_frame)
                return;

        if (entering_range) { /* first in range */
                /* Going into range select tool */
                if (wacom_wac->hid_data.eraser)
                        wacom_wac->tool[0] = BTN_TOOL_RUBBER;
                else if (wacom_wac->features.quirks & WACOM_QUIRK_AESPEN)
                        wacom_wac->tool[0] = BTN_TOOL_PEN;
                else if (wacom_wac->id[0])
                        wacom_wac->tool[0] = wacom_intuos_get_tool_type(wacom_wac->id[0]);
                else
                        wacom_wac->tool[0] = BTN_TOOL_PEN;
        }

        /* keep pen state for touch events */
        wacom_wac->shared->stylus_in_proximity = sense;

        if (!delay_pen_events(wacom_wac) && wacom_wac->tool[0]) {
                int id = wacom_wac->id[0];
                if (wacom_wac->features.quirks & WACOM_QUIRK_PEN_BUTTON3) {
                        int sw_state = wacom_wac->hid_data.barrelswitch |
                                       (wacom_wac->hid_data.barrelswitch2 << 1);
                        wacom_wac->hid_data.barrelswitch = sw_state == 1;
                        wacom_wac->hid_data.barrelswitch2 = sw_state == 2;
                        wacom_wac->hid_data.barrelswitch3 = sw_state == 3;
                }
                input_report_key(input, BTN_STYLUS, wacom_wac->hid_data.barrelswitch);
                input_report_key(input, BTN_STYLUS2, wacom_wac->hid_data.barrelswitch2);
                input_report_key(input, BTN_STYLUS3, wacom_wac->hid_data.barrelswitch3);

                /*
                 * Non-USI EMR tools should have their IDs mangled to
                 * match the legacy behavior of wacom_intuos_general
                 */
                if (wacom_wac->serial[0] >> 52 == 1)
                        id = wacom_intuos_id_mangle(id);

                /*
                 * To ensure compatibility with xf86-input-wacom, we should
                 * report the BTN_TOOL_* event prior to the ABS_MISC or
                 * MSC_SERIAL events.
                 */
                input_report_key(input, BTN_TOUCH,
                                wacom_wac->hid_data.tipswitch);
                input_report_key(input, wacom_wac->tool[0], sense);
                if (wacom_wac->serial[0]) {
                        /*
                         * xf86-input-wacom does not accept a serial number
                         * of '0'. Report the low 32 bits if possible, but
                         * if they are zero, report the upper ones instead.
                         */
                        __u32 serial_lo = wacom_wac->serial[0] & 0xFFFFFFFFu;
                        __u32 serial_hi = wacom_wac->serial[0] >> 32;
                        input_event(input, EV_MSC, MSC_SERIAL, (int)(serial_lo ? serial_lo : serial_hi));
                        input_report_abs(input, ABS_MISC, sense ? id : 0);
                }

                wacom_wac->hid_data.tipswitch = false;
                wacom_wac->hid_data.eraser = false;

                input_sync(input);
        }

        /* Handle AES battery timeout behavior */
        if (wacom_wac->features.quirks & WACOM_QUIRK_AESPEN) {
                if (entering_range)
                        cancel_delayed_work(&wacom->aes_battery_work);
                if (!sense)
                        schedule_delayed_work(&wacom->aes_battery_work,
                                              msecs_to_jiffies(WACOM_AES_BATTERY_TIMEOUT));
        }

        if (!sense) {
                wacom_wac->tool[0] = 0;
                wacom_wac->id[0] = 0;
                wacom_wac->serial[0] = 0;
        }
}

static void wacom_wac_finger_usage_mapping(struct hid_device *hdev,
                struct hid_field *field, struct hid_usage *usage)
{
        struct wacom *wacom = hid_get_drvdata(hdev);
        struct wacom_wac *wacom_wac = &wacom->wacom_wac;
        struct input_dev *input = wacom_wac->touch_input;
        unsigned touch_max = wacom_wac->features.touch_max;
        unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);

        switch (equivalent_usage) {
        case HID_GD_X:
                if (touch_max == 1)
                        wacom_map_usage(input, usage, field, EV_ABS, ABS_X, 4);
                else
                        wacom_map_usage(input, usage, field, EV_ABS,
                                        ABS_MT_POSITION_X, 4);
                break;
        case HID_GD_Y:
                if (touch_max == 1)
                        wacom_map_usage(input, usage, field, EV_ABS, ABS_Y, 4);
                else
                        wacom_map_usage(input, usage, field, EV_ABS,
                                        ABS_MT_POSITION_Y, 4);
                break;
        case HID_DG_WIDTH:
        case HID_DG_HEIGHT:
                wacom_map_usage(input, usage, field, EV_ABS, ABS_MT_TOUCH_MAJOR, 0);
                wacom_map_usage(input, usage, field, EV_ABS, ABS_MT_TOUCH_MINOR, 0);
                input_set_abs_params(input, ABS_MT_ORIENTATION, 0, 1, 0, 0);
                break;
        case HID_DG_TIPSWITCH:
                wacom_map_usage(input, usage, field, EV_KEY, BTN_TOUCH, 0);
                break;
        case HID_DG_CONTACTCOUNT:
                wacom_wac->hid_data.cc_report = field->report->id;
                wacom_wac->hid_data.cc_index = field->index;
                wacom_wac->hid_data.cc_value_index = usage->usage_index;
                break;
        case HID_DG_CONTACTID:
                if ((field->logical_maximum - field->logical_minimum) < touch_max) {
                        /*
                         * The HID descriptor for G11 sensors leaves logical
                         * maximum set to '1' despite it being a multitouch
                         * device. Override to a sensible number.
                         */
                        field->logical_maximum = 255;
                }
                break;
        case HID_DG_SCANTIME:
                wacom_map_usage(input, usage, field, EV_MSC, MSC_TIMESTAMP, 0);
                break;
        }
}

static void wacom_wac_finger_slot(struct wacom_wac *wacom_wac,
                struct input_dev *input)
{
        struct hid_data *hid_data = &wacom_wac->hid_data;
        bool mt = wacom_wac->features.touch_max > 1;
        bool touch_down = hid_data->tipswitch && hid_data->confidence;
        bool prox = touch_down && report_touch_events(wacom_wac);

        if (touch_is_muted(wacom_wac)) {
                if (!wacom_wac->shared->touch_down)
                        return;
                prox = false;
        }

        wacom_wac->hid_data.num_received++;
        if (wacom_wac->hid_data.num_received > wacom_wac->hid_data.num_expected)
                return;

        if (mt) {
                int slot;

                slot = input_mt_get_slot_by_key(input, hid_data->id);
                if (slot < 0) {
                        return;
                } else {
                        struct input_mt_slot *ps = &input->mt->slots[slot];
                        int mt_id = input_mt_get_value(ps, ABS_MT_TRACKING_ID);

                        if (!prox && mt_id < 0) {
                                // No data to send for this slot; short-circuit
                                return;
                        }
                }

                input_mt_slot(input, slot);
                input_mt_report_slot_state(input, MT_TOOL_FINGER, prox);
        }
        else {
                input_report_key(input, BTN_TOUCH, prox);
        }

        if (prox) {
                input_report_abs(input, mt ? ABS_MT_POSITION_X : ABS_X,
                                 hid_data->x);
                input_report_abs(input, mt ? ABS_MT_POSITION_Y : ABS_Y,
                                 hid_data->y);

                if (test_bit(ABS_MT_TOUCH_MAJOR, input->absbit)) {
                        input_report_abs(input, ABS_MT_TOUCH_MAJOR, max(hid_data->width, hid_data->height));
                        input_report_abs(input, ABS_MT_TOUCH_MINOR, min(hid_data->width, hid_data->height));
                        if (hid_data->width != hid_data->height)
                                input_report_abs(input, ABS_MT_ORIENTATION, hid_data->width <= hid_data->height ? 0 : 1);
                }
        }
}

static void wacom_wac_finger_event(struct hid_device *hdev,
                struct hid_field *field, struct hid_usage *usage, __s32 value)
{
        struct wacom *wacom = hid_get_drvdata(hdev);
        struct wacom_wac *wacom_wac = &wacom->wacom_wac;
        unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);
        struct wacom_features *features = &wacom->wacom_wac.features;

        if (touch_is_muted(wacom_wac) && !wacom_wac->shared->touch_down)
                return;

        if (wacom_wac->is_invalid_bt_frame)
                return;

        switch (equivalent_usage) {
        case HID_DG_CONFIDENCE:
                wacom_wac->hid_data.confidence = value;
                break;
        case HID_GD_X:
                wacom_wac->hid_data.x = value;
                break;
        case HID_GD_Y:
                wacom_wac->hid_data.y = value;
                break;
        case HID_DG_WIDTH:
                wacom_wac->hid_data.width = value;
                break;
        case HID_DG_HEIGHT:
                wacom_wac->hid_data.height = value;
                break;
        case HID_DG_CONTACTID:
                wacom_wac->hid_data.id = value;
                break;
        case HID_DG_TIPSWITCH:
                wacom_wac->hid_data.tipswitch = value;
                break;
        case WACOM_HID_WT_REPORT_VALID:
                wacom_wac->is_invalid_bt_frame = !value;
                return;
        case HID_DG_CONTACTMAX:
                if (!features->touch_max) {
                        features->touch_max = value;
                } else {
                        hid_warn(hdev, "%s: ignoring attempt to overwrite non-zero touch_max "
                                 "%d -> %d\n", __func__, features->touch_max, value);
                }
                return;
        }

        if (usage->usage_index + 1 == field->report_count) {
                if (equivalent_usage == wacom_wac->hid_data.last_slot_field)
                        wacom_wac_finger_slot(wacom_wac, wacom_wac->touch_input);
        }
}

static void wacom_wac_finger_pre_report(struct hid_device *hdev,
                struct hid_report *report)
{
        struct wacom *wacom = hid_get_drvdata(hdev);
        struct wacom_wac *wacom_wac = &wacom->wacom_wac;
        struct hid_data* hid_data = &wacom_wac->hid_data;
        int i;

        if (touch_is_muted(wacom_wac) && !wacom_wac->shared->touch_down)
                return;

        wacom_wac->is_invalid_bt_frame = false;

        hid_data->confidence = true;

        hid_data->cc_report = 0;
        hid_data->cc_index = -1;
        hid_data->cc_value_index = -1;

        for (i = 0; i < report->maxfield; i++) {
                struct hid_field *field = report->field[i];
                int j;

                for (j = 0; j < field->maxusage; j++) {
                        struct hid_usage *usage = &field->usage[j];
                        unsigned int equivalent_usage =
                                wacom_equivalent_usage(usage->hid);

                        switch (equivalent_usage) {
                        case HID_GD_X:
                        case HID_GD_Y:
                        case HID_DG_WIDTH:
                        case HID_DG_HEIGHT:
                        case HID_DG_CONTACTID:
                        case HID_DG_INRANGE:
                        case HID_DG_INVERT:
                        case HID_DG_TIPSWITCH:
                                hid_data->last_slot_field = equivalent_usage;
                                break;
                        case HID_DG_CONTACTCOUNT:
                                hid_data->cc_report = report->id;
                                hid_data->cc_index = i;
                                hid_data->cc_value_index = j;
                                break;
                        }
                }
        }

        if (hid_data->cc_report != 0 &&
            hid_data->cc_index >= 0) {
                struct hid_field *field = report->field[hid_data->cc_index];
                int value = field->value[hid_data->cc_value_index];
                if (value) {
                        hid_data->num_expected = value;
                        hid_data->num_received = 0;
                }
        }
        else {
                hid_data->num_expected = wacom_wac->features.touch_max;
                hid_data->num_received = 0;
        }
}

static void wacom_wac_finger_report(struct hid_device *hdev,
                struct hid_report *report)
{
        struct wacom *wacom = hid_get_drvdata(hdev);
        struct wacom_wac *wacom_wac = &wacom->wacom_wac;
        struct input_dev *input = wacom_wac->touch_input;
        unsigned touch_max = wacom_wac->features.touch_max;

        /* if there was nothing to process, don't send an empty sync */
        if (wacom_wac->hid_data.num_expected == 0)
                return;

        /* If more packets of data are expected, give us a chance to
         * process them rather than immediately syncing a partial
         * update.
         */
        if (wacom_wac->hid_data.num_received < wacom_wac->hid_data.num_expected)
                return;

        if (touch_max > 1)
                input_mt_sync_frame(input);

        input_sync(input);
        wacom_wac->hid_data.num_received = 0;
        wacom_wac->hid_data.num_expected = 0;

        /* keep touch state for pen event */
        wacom_wac->shared->touch_down = wacom_wac_finger_count_touches(wacom_wac);
}

void wacom_wac_usage_mapping(struct hid_device *hdev,
                struct hid_field *field, struct hid_usage *usage)
{
        struct wacom *wacom = hid_get_drvdata(hdev);
        struct wacom_wac *wacom_wac = &wacom->wacom_wac;
        struct wacom_features *features = &wacom_wac->features;

        if (WACOM_DIRECT_DEVICE(field))
                features->device_type |= WACOM_DEVICETYPE_DIRECT;

        /* usage tests must precede field tests */
        if (WACOM_BATTERY_USAGE(usage))
                wacom_wac_battery_usage_mapping(hdev, field, usage);
        else if (WACOM_PAD_FIELD(field))
                wacom_wac_pad_usage_mapping(hdev, field, usage);
        else if (WACOM_PEN_FIELD(field))
                wacom_wac_pen_usage_mapping(hdev, field, usage);
        else if (WACOM_FINGER_FIELD(field))
                wacom_wac_finger_usage_mapping(hdev, field, usage);
}

void wacom_wac_event(struct hid_device *hdev, struct hid_field *field,
                struct hid_usage *usage, __s32 value)
{
        struct wacom *wacom = hid_get_drvdata(hdev);

        if (wacom->wacom_wac.features.type != HID_GENERIC)
                return;

        if (value > field->logical_maximum || value < field->logical_minimum)
                return;

        /* usage tests must precede field tests */
        if (WACOM_BATTERY_USAGE(usage))
                wacom_wac_battery_event(hdev, field, usage, value);
        else if (WACOM_PAD_FIELD(field))
                wacom_wac_pad_event(hdev, field, usage, value);
        else if (WACOM_PEN_FIELD(field) && wacom->wacom_wac.pen_input)
                wacom_wac_pen_event(hdev, field, usage, value);
        else if (WACOM_FINGER_FIELD(field) && wacom->wacom_wac.touch_input)
                wacom_wac_finger_event(hdev, field, usage, value);
}

static void wacom_report_events(struct hid_device *hdev,
                                struct hid_report *report, int collection_index,
                                int field_index)
{
        int r;

        for (r = field_index; r < report->maxfield; r++) {
                struct hid_field *field;
                unsigned count, n;

                field = report->field[r];
                count = field->report_count;

                if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
                        continue;

                for (n = 0 ; n < count; n++) {
                        if (field->usage[n].collection_index == collection_index)
                                wacom_wac_event(hdev, field, &field->usage[n],
                                                field->value[n]);
                        else
                                return;
                }
        }
}

static int wacom_wac_collection(struct hid_device *hdev, struct hid_report *report,
                         int collection_index, struct hid_field *field,
                         int field_index)
{
        struct wacom *wacom = hid_get_drvdata(hdev);

        wacom_report_events(hdev, report, collection_index, field_index);

        /*
         * Non-input reports may be sent prior to the device being
         * completely initialized. Since only their events need
         * to be processed, exit after 'wacom_report_events' has
         * been called to prevent potential crashes in the report-
         * processing functions.
         */
        if (report->type != HID_INPUT_REPORT)
                return -1;

        if (WACOM_PAD_FIELD(field))
                return 0;
        else if (WACOM_PEN_FIELD(field) && wacom->wacom_wac.pen_input)
                wacom_wac_pen_report(hdev, report);
        else if (WACOM_FINGER_FIELD(field) && wacom->wacom_wac.touch_input)
                wacom_wac_finger_report(hdev, report);

        return 0;
}

void wacom_wac_report(struct hid_device *hdev, struct hid_report *report)
{
        struct wacom *wacom = hid_get_drvdata(hdev);
        struct wacom_wac *wacom_wac = &wacom->wacom_wac;
        struct hid_field *field;
        bool pad_in_hid_field = false, pen_in_hid_field = false,
                finger_in_hid_field = false, true_pad = false;
        int r;
        int prev_collection = -1;

        if (wacom_wac->features.type != HID_GENERIC)
                return;

        for (r = 0; r < report->maxfield; r++) {
                field = report->field[r];

                if (WACOM_PAD_FIELD(field))
                        pad_in_hid_field = true;
                if (WACOM_PEN_FIELD(field))
                        pen_in_hid_field = true;
                if (WACOM_FINGER_FIELD(field))
                        finger_in_hid_field = true;
                if (wacom_equivalent_usage(field->physical) == HID_DG_TABLETFUNCTIONKEY)
                        true_pad = true;
        }

        wacom_wac_battery_pre_report(hdev, report);

        if (pad_in_hid_field && wacom_wac->pad_input)
                wacom_wac_pad_pre_report(hdev, report);
        if (pen_in_hid_field && wacom_wac->pen_input)
                wacom_wac_pen_pre_report(hdev, report);
        if (finger_in_hid_field && wacom_wac->touch_input)
                wacom_wac_finger_pre_report(hdev, report);

        for (r = 0; r < report->maxfield; r++) {
                field = report->field[r];

                if (field->usage[0].collection_index != prev_collection) {
                        if (wacom_wac_collection(hdev, report,
                                field->usage[0].collection_index, field, r) < 0)
                                return;
                        prev_collection = field->usage[0].collection_index;
                }
        }

        wacom_wac_battery_report(hdev, report);

        if (true_pad && wacom_wac->pad_input)
                wacom_wac_pad_report(hdev, report, field);
}

static int wacom_bpt_touch(struct wacom_wac *wacom)
{
        struct wacom_features *features = &wacom->features;
        struct input_dev *input = wacom->touch_input;
        struct input_dev *pad_input = wacom->pad_input;
        unsigned char *data = wacom->data;
        int i;

        if (data[0] != 0x02)
            return 0;

        for (i = 0; i < 2; i++) {
                int offset = (data[1] & 0x80) ? (8 * i) : (9 * i);
                bool touch = report_touch_events(wacom)
                           && (data[offset + 3] & 0x80);

                input_mt_slot(input, i);
                input_mt_report_slot_state(input, MT_TOOL_FINGER, touch);
                if (touch) {
                        int x = get_unaligned_be16(&data[offset + 3]) & 0x7ff;
                        int y = get_unaligned_be16(&data[offset + 5]) & 0x7ff;
                        if (features->quirks & WACOM_QUIRK_BBTOUCH_LOWRES) {
                                x <<= 5;
                                y <<= 5;
                        }
                        input_report_abs(input, ABS_MT_POSITION_X, x);
                        input_report_abs(input, ABS_MT_POSITION_Y, y);
                }
        }

        input_mt_sync_frame(input);

        input_report_key(pad_input, BTN_LEFT, (data[1] & 0x08) != 0);
        input_report_key(pad_input, BTN_FORWARD, (data[1] & 0x04) != 0);
        input_report_key(pad_input, BTN_BACK, (data[1] & 0x02) != 0);
        input_report_key(pad_input, BTN_RIGHT, (data[1] & 0x01) != 0);
        wacom->shared->touch_down = wacom_wac_finger_count_touches(wacom);

        return 1;
}

static void wacom_bpt3_touch_msg(struct wacom_wac *wacom, unsigned char *data)
{
        struct wacom_features *features = &wacom->features;
        struct input_dev *input = wacom->touch_input;
        bool touch = data[1] & 0x80;
        int slot = input_mt_get_slot_by_key(input, data[0]);

        if (slot < 0)
                return;

        touch = touch && report_touch_events(wacom);

        input_mt_slot(input, slot);
        input_mt_report_slot_state(input, MT_TOOL_FINGER, touch);

        if (touch) {
                int x = (data[2] << 4) | (data[4] >> 4);
                int y = (data[3] << 4) | (data[4] & 0x0f);
                int width, height;

                if (features->type >= INTUOSPS && features->type <= INTUOSHT2) {
                        width  = data[5] * 100;
                        height = data[6] * 100;
                } else {
                        /*
                         * "a" is a scaled-down area which we assume is
                         * roughly circular and which can be described as:
                         * a=(pi*r^2)/C.
                         */
                        int a = data[5];
                        int x_res = input_abs_get_res(input, ABS_MT_POSITION_X);
                        int y_res = input_abs_get_res(input, ABS_MT_POSITION_Y);
                        width = 2 * int_sqrt(a * WACOM_CONTACT_AREA_SCALE);
                        height = width * y_res / x_res;
                }

                input_report_abs(input, ABS_MT_POSITION_X, x);
                input_report_abs(input, ABS_MT_POSITION_Y, y);
                input_report_abs(input, ABS_MT_TOUCH_MAJOR, width);
                input_report_abs(input, ABS_MT_TOUCH_MINOR, height);
        }
}

static void wacom_bpt3_button_msg(struct wacom_wac *wacom, unsigned char *data)
{
        struct input_dev *input = wacom->pad_input;
        struct wacom_features *features = &wacom->features;

        if (features->type == INTUOSHT || features->type == INTUOSHT2) {
                input_report_key(input, BTN_LEFT, (data[1] & 0x02) != 0);
                input_report_key(input, BTN_BACK, (data[1] & 0x08) != 0);
        } else {
                input_report_key(input, BTN_BACK, (data[1] & 0x02) != 0);
                input_report_key(input, BTN_LEFT, (data[1] & 0x08) != 0);
        }
        input_report_key(input, BTN_FORWARD, (data[1] & 0x04) != 0);
        input_report_key(input, BTN_RIGHT, (data[1] & 0x01) != 0);
}

static int wacom_bpt3_touch(struct wacom_wac *wacom)
{
        unsigned char *data = wacom->data;
        int count = data[1] & 0x07;
        int  touch_changed = 0, i;

        if (data[0] != 0x02)
            return 0;

        /* data has up to 7 fixed sized 8-byte messages starting at data[2] */
        for (i = 0; i < count; i++) {
                int offset = (8 * i) + 2;
                int msg_id = data[offset];

                if (msg_id >= 2 && msg_id <= 17) {
                        wacom_bpt3_touch_msg(wacom, data + offset);
                        touch_changed++;
                } else if (msg_id == 128)
                        wacom_bpt3_button_msg(wacom, data + offset);

        }

        /* only update touch if we actually have a touchpad and touch data changed */
        if (wacom->touch_input && touch_changed) {
                input_mt_sync_frame(wacom->touch_input);
                wacom->shared->touch_down = wacom_wac_finger_count_touches(wacom);
        }

        return 1;
}

static int wacom_bpt_pen(struct wacom_wac *wacom)
{
        struct wacom_features *features = &wacom->features;
        struct input_dev *input = wacom->pen_input;
        unsigned char *data = wacom->data;
        int x = 0, y = 0, p = 0, d = 0;
        bool pen = false, btn1 = false, btn2 = false;
        bool range, prox, rdy;

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

        range = (data[1] & 0x80) == 0x80;
        prox = (data[1] & 0x40) == 0x40;
        rdy = (data[1] & 0x20) == 0x20;

        wacom->shared->stylus_in_proximity = range;
        if (delay_pen_events(wacom))
                return 0;

        if (rdy) {
                p = le16_to_cpup((__le16 *)&data[6]);
                pen = data[1] & 0x01;
                btn1 = data[1] & 0x02;
                btn2 = data[1] & 0x04;
        }
        if (prox) {
                x = le16_to_cpup((__le16 *)&data[2]);
                y = le16_to_cpup((__le16 *)&data[4]);

                if (data[1] & 0x08) {
                        wacom->tool[0] = BTN_TOOL_RUBBER;
                        wacom->id[0] = ERASER_DEVICE_ID;
                } else {
                        wacom->tool[0] = BTN_TOOL_PEN;
                        wacom->id[0] = STYLUS_DEVICE_ID;
                }
                wacom->reporting_data = true;
        }
        if (range) {
                /*
                 * Convert distance from out prox to distance from tablet.
                 * distance will be greater than distance_max once
                 * touching and applying pressure; do not report negative
                 * distance.
                 */
                if (data[8] <= features->distance_max)
                        d = features->distance_max - data[8];
        } else {
                wacom->id[0] = 0;
        }

        if (wacom->reporting_data) {
                input_report_key(input, BTN_TOUCH, pen);
                input_report_key(input, BTN_STYLUS, btn1);
                input_report_key(input, BTN_STYLUS2, btn2);

                if (prox || !range) {
                        input_report_abs(input, ABS_X, x);
                        input_report_abs(input, ABS_Y, y);
                }
                input_report_abs(input, ABS_PRESSURE, p);
                input_report_abs(input, ABS_DISTANCE, d);

                input_report_key(input, wacom->tool[0], range); /* PEN or RUBBER */
                input_report_abs(input, ABS_MISC, wacom->id[0]); /* TOOL ID */
        }

        if (!range) {
                wacom->reporting_data = false;
        }

        return 1;
}

static int wacom_bpt_irq(struct wacom_wac *wacom, size_t len)
{
        struct wacom_features *features = &wacom->features;

        if ((features->type == INTUOSHT2) &&
            (features->device_type & WACOM_DEVICETYPE_PEN))
                return wacom_intuos_irq(wacom);
        else if (len == WACOM_PKGLEN_BBTOUCH)
                return wacom_bpt_touch(wacom);
        else if (len == WACOM_PKGLEN_BBTOUCH3)
                return wacom_bpt3_touch(wacom);
        else if (len == WACOM_PKGLEN_BBFUN || len == WACOM_PKGLEN_BBPEN)
                return wacom_bpt_pen(wacom);

        return 0;
}

static void wacom_bamboo_pad_pen_event(struct wacom_wac *wacom,
                unsigned char *data)
{
        unsigned char prefix;

        /*
         * We need to reroute the event from the debug interface to the
         * pen interface.
         * We need to add the report ID to the actual pen report, so we
         * temporary overwrite the first byte to prevent having to kzalloc/kfree
         * and memcpy the report.
         */
        prefix = data[0];
        data[0] = WACOM_REPORT_BPAD_PEN;

        /*
         * actually reroute the event.
         * No need to check if wacom->shared->pen is valid, hid_input_report()
         * will check for us.
         */
        hid_input_report(wacom->shared->pen, HID_INPUT_REPORT, data,
                         WACOM_PKGLEN_PENABLED, 1);

        data[0] = prefix;
}

static int wacom_bamboo_pad_touch_event(struct wacom_wac *wacom,
                unsigned char *data)
{
        struct input_dev *input = wacom->touch_input;
        unsigned char *finger_data, prefix;
        unsigned id;
        int x, y;
        bool valid;

        prefix = data[0];

        for (id = 0; id < wacom->features.touch_max; id++) {
                valid = !!(prefix & BIT(id)) &&
                        report_touch_events(wacom);

                input_mt_slot(input, id);
                input_mt_report_slot_state(input, MT_TOOL_FINGER, valid);

                if (!valid)
                        continue;

                finger_data = data + 1 + id * 3;
                x = finger_data[0] | ((finger_data[1] & 0x0f) << 8);
                y = (finger_data[2] << 4) | (finger_data[1] >> 4);

                input_report_abs(input, ABS_MT_POSITION_X, x);
                input_report_abs(input, ABS_MT_POSITION_Y, y);
        }

        input_mt_sync_frame(input);

        input_report_key(input, BTN_LEFT, prefix & 0x40);
        input_report_key(input, BTN_RIGHT, prefix & 0x80);

        /* keep touch state for pen event */
        wacom->shared->touch_down = !!prefix && report_touch_events(wacom);

        return 1;
}

static int wacom_bamboo_pad_irq(struct wacom_wac *wacom, size_t len)
{
        unsigned char *data = wacom->data;

        if (!((len == WACOM_PKGLEN_BPAD_TOUCH) ||
              (len == WACOM_PKGLEN_BPAD_TOUCH_USB)) ||
            (data[0] != WACOM_REPORT_BPAD_TOUCH))
                return 0;

        if (data[1] & 0x01)
                wacom_bamboo_pad_pen_event(wacom, &data[1]);

        if (data[1] & 0x02)
                return wacom_bamboo_pad_touch_event(wacom, &data[9]);

        return 0;
}

static int wacom_wireless_irq(struct wacom_wac *wacom, size_t len)
{
        unsigned char *data = wacom->data;
        int connected;

        if (len != WACOM_PKGLEN_WIRELESS || data[0] != WACOM_REPORT_WL)
                return 0;

        connected = data[1] & 0x01;
        if (connected) {
                int pid, battery, charging;

                if ((wacom->shared->type == INTUOSHT ||
                    wacom->shared->type == INTUOSHT2) &&
                    wacom->shared->touch_input &&
                    wacom->shared->touch_max) {
                        input_report_switch(wacom->shared->touch_input,
                                        SW_MUTE_DEVICE, data[5] & 0x40);
                        input_sync(wacom->shared->touch_input);
                }

                pid = get_unaligned_be16(&data[6]);
                battery = (data[5] & 0x3f) * 100 / 31;
                charging = !!(data[5] & 0x80);
                if (wacom->pid != pid) {
                        wacom->pid = pid;
                        wacom_schedule_work(wacom, WACOM_WORKER_WIRELESS);
                }

                wacom_notify_battery(wacom, WACOM_POWER_SUPPLY_STATUS_AUTO,
                                     battery, charging, 1, 0);

        } else if (wacom->pid != 0) {
                /* disconnected while previously connected */
                wacom->pid = 0;
                wacom_schedule_work(wacom, WACOM_WORKER_WIRELESS);
                wacom_notify_battery(wacom, POWER_SUPPLY_STATUS_UNKNOWN, 0, 0, 0, 0);
        }

        return 0;
}

static int wacom_status_irq(struct wacom_wac *wacom_wac, size_t len)
{
        struct wacom *wacom = container_of(wacom_wac, struct wacom, wacom_wac);
        struct wacom_features *features = &wacom_wac->features;
        unsigned char *data = wacom_wac->data;

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

        if ((features->type == INTUOSHT ||
            features->type == INTUOSHT2) &&
            wacom_wac->shared->touch_input &&
            features->touch_max) {
                input_report_switch(wacom_wac->shared->touch_input,
                                    SW_MUTE_DEVICE, data[8] & 0x40);
                input_sync(wacom_wac->shared->touch_input);
        }

        if (data[9] & 0x02) { /* wireless module is attached */
                int battery = (data[8] & 0x3f) * 100 / 31;
                bool charging = !!(data[8] & 0x80);

                features->quirks |= WACOM_QUIRK_BATTERY;
                wacom_notify_battery(wacom_wac, WACOM_POWER_SUPPLY_STATUS_AUTO,
                                     battery, charging, battery || charging, 1);
        }
        else if ((features->quirks & WACOM_QUIRK_BATTERY) &&
                 wacom->battery.battery) {
                features->quirks &= ~WACOM_QUIRK_BATTERY;
                wacom_notify_battery(wacom_wac, POWER_SUPPLY_STATUS_UNKNOWN, 0, 0, 0, 0);
        }
        return 0;
}

void wacom_wac_irq(struct wacom_wac *wacom_wac, size_t len)
{
        bool sync;

        switch (wacom_wac->features.type) {
        case PENPARTNER:
                sync = wacom_penpartner_irq(wacom_wac);
                break;

        case PL:
                sync = wacom_pl_irq(wacom_wac);
                break;

        case WACOM_G4:
        case GRAPHIRE:
        case GRAPHIRE_BT:
        case WACOM_MO:
                sync = wacom_graphire_irq(wacom_wac);
                break;

        case PTU:
                sync = wacom_ptu_irq(wacom_wac);
                break;

        case DTU:
                sync = wacom_dtu_irq(wacom_wac);
                break;

        case DTUS:
        case DTUSX:
                sync = wacom_dtus_irq(wacom_wac);
                break;

        case INTUOS:
        case INTUOS3S:
        case INTUOS3:
        case INTUOS3L:
        case INTUOS4S:
        case INTUOS4:
        case INTUOS4L:
        case CINTIQ:
        case WACOM_BEE:
        case WACOM_13HD:
        case WACOM_21UX2:
        case WACOM_22HD:
        case WACOM_24HD:
        case WACOM_27QHD:
        case DTK:
        case CINTIQ_HYBRID:
        case CINTIQ_COMPANION_2:
                sync = wacom_intuos_irq(wacom_wac);
                break;

        case INTUOS4WL:
                sync = wacom_intuos_bt_irq(wacom_wac, len);
                break;

        case WACOM_24HDT:
        case WACOM_27QHDT:
                sync = wacom_24hdt_irq(wacom_wac);
                break;

        case INTUOS5S:
        case INTUOS5:
        case INTUOS5L:
        case INTUOSPS:
        case INTUOSPM:
        case INTUOSPL:
                if (len == WACOM_PKGLEN_BBTOUCH3)
                        sync = wacom_bpt3_touch(wacom_wac);
                else if (wacom_wac->data[0] == WACOM_REPORT_USB)
                        sync = wacom_status_irq(wacom_wac, len);
                else
                        sync = wacom_intuos_irq(wacom_wac);
                break;

        case INTUOSP2_BT:
        case INTUOSP2S_BT:
        case INTUOSHT3_BT:
                sync = wacom_intuos_pro2_bt_irq(wacom_wac, len);
                break;

        case TABLETPC:
        case TABLETPCE:
        case TABLETPC2FG:
        case MTSCREEN:
        case MTTPC:
        case MTTPC_B:
                sync = wacom_tpc_irq(wacom_wac, len);
                break;

        case BAMBOO_PT:
        case BAMBOO_PEN:
        case BAMBOO_TOUCH:
        case INTUOSHT:
        case INTUOSHT2:
                if (wacom_wac->data[0] == WACOM_REPORT_USB)
                        sync = wacom_status_irq(wacom_wac, len);
                else
                        sync = wacom_bpt_irq(wacom_wac, len);
                break;

        case BAMBOO_PAD:
                sync = wacom_bamboo_pad_irq(wacom_wac, len);
                break;

        case WIRELESS:
                sync = wacom_wireless_irq(wacom_wac, len);
                break;

        case REMOTE:
                sync = false;
                if (wacom_wac->data[0] == WACOM_REPORT_DEVICE_LIST)
                        wacom_remote_status_irq(wacom_wac, len);
                else
                        sync = wacom_remote_irq(wacom_wac, len);
                break;

        default:
                sync = false;
                break;
        }

        if (sync) {
                if (wacom_wac->pen_input)
                        input_sync(wacom_wac->pen_input);
                if (wacom_wac->touch_input)
                        input_sync(wacom_wac->touch_input);
                if (wacom_wac->pad_input)
                        input_sync(wacom_wac->pad_input);
        }
}

static void wacom_setup_basic_pro_pen(struct wacom_wac *wacom_wac)
{
        struct input_dev *input_dev = wacom_wac->pen_input;

        input_set_capability(input_dev, EV_MSC, MSC_SERIAL);

        __set_bit(BTN_TOOL_PEN, input_dev->keybit);
        __set_bit(BTN_STYLUS, input_dev->keybit);
        __set_bit(BTN_STYLUS2, input_dev->keybit);

        input_set_abs_params(input_dev, ABS_DISTANCE,
                             0, wacom_wac->features.distance_max, wacom_wac->features.distance_fuzz, 0);
}

static void wacom_setup_cintiq(struct wacom_wac *wacom_wac)
{
        struct input_dev *input_dev = wacom_wac->pen_input;
        struct wacom_features *features = &wacom_wac->features;

        wacom_setup_basic_pro_pen(wacom_wac);

        __set_bit(BTN_TOOL_RUBBER, input_dev->keybit);
        __set_bit(BTN_TOOL_BRUSH, input_dev->keybit);
        __set_bit(BTN_TOOL_PENCIL, input_dev->keybit);
        __set_bit(BTN_TOOL_AIRBRUSH, input_dev->keybit);

        input_set_abs_params(input_dev, ABS_WHEEL, 0, 1023, 0, 0);
        input_set_abs_params(input_dev, ABS_TILT_X, -64, 63, features->tilt_fuzz, 0);
        input_abs_set_res(input_dev, ABS_TILT_X, 57);
        input_set_abs_params(input_dev, ABS_TILT_Y, -64, 63, features->tilt_fuzz, 0);
        input_abs_set_res(input_dev, ABS_TILT_Y, 57);
}

static void wacom_setup_intuos(struct wacom_wac *wacom_wac)
{
        struct input_dev *input_dev = wacom_wac->pen_input;

        input_set_capability(input_dev, EV_REL, REL_WHEEL);

        wacom_setup_cintiq(wacom_wac);

        __set_bit(BTN_LEFT, input_dev->keybit);
        __set_bit(BTN_RIGHT, input_dev->keybit);
        __set_bit(BTN_MIDDLE, input_dev->keybit);
        __set_bit(BTN_SIDE, input_dev->keybit);
        __set_bit(BTN_EXTRA, input_dev->keybit);
        __set_bit(BTN_TOOL_MOUSE, input_dev->keybit);
        __set_bit(BTN_TOOL_LENS, input_dev->keybit);

        input_set_abs_params(input_dev, ABS_RZ, -900, 899, 0, 0);
        input_abs_set_res(input_dev, ABS_RZ, 287);
        input_set_abs_params(input_dev, ABS_THROTTLE, -1023, 1023, 0, 0);
}

void wacom_setup_device_quirks(struct wacom *wacom)
{
        struct wacom_wac *wacom_wac = &wacom->wacom_wac;
        struct wacom_features *features = &wacom->wacom_wac.features;

        /* The pen and pad share the same interface on most devices */
        if (features->type == GRAPHIRE_BT || features->type == WACOM_G4 ||
            features->type == DTUS ||
            (features->type >= INTUOS3S && features->type <= WACOM_MO)) {
                if (features->device_type & WACOM_DEVICETYPE_PEN)
                        features->device_type |= WACOM_DEVICETYPE_PAD;
        }

        /* touch device found but size is not defined. use default */
        if (features->device_type & WACOM_DEVICETYPE_TOUCH && !features->x_max) {
                features->x_max = 1023;
                features->y_max = 1023;
        }

        /*
         * Intuos5/Pro and Bamboo 3rd gen have no useful data about its
         * touch interface in its HID descriptor. If this is the touch
         * interface (PacketSize of WACOM_PKGLEN_BBTOUCH3), override the
         * tablet values.
         */
        if ((features->type >= INTUOS5S && features->type <= INTUOSPL) ||
                (features->type >= INTUOSHT && features->type <= BAMBOO_PT)) {
                if (features->pktlen == WACOM_PKGLEN_BBTOUCH3) {
                        if (features->touch_max)
                                features->device_type |= WACOM_DEVICETYPE_TOUCH;
                        if (features->type >= INTUOSHT && features->type <= BAMBOO_PT)
                                features->device_type |= WACOM_DEVICETYPE_PAD;

                        if (features->type == INTUOSHT2) {
                                features->x_max = features->x_max / 10;
                                features->y_max = features->y_max / 10;
                        }
                        else {
                                features->x_max = 4096;
                                features->y_max = 4096;
                        }
                }
                else if (features->pktlen == WACOM_PKGLEN_BBTOUCH) {
                        features->device_type |= WACOM_DEVICETYPE_PAD;
                }
        }

        /*
         * Hack for the Bamboo One:
         * the device presents a PAD/Touch interface as most Bamboos and even
         * sends ghosts PAD data on it. However, later, we must disable this
         * ghost interface, and we can not detect it unless we set it here
         * to WACOM_DEVICETYPE_PAD or WACOM_DEVICETYPE_TOUCH.
         */
        if (features->type == BAMBOO_PEN &&
            features->pktlen == WACOM_PKGLEN_BBTOUCH3)
                features->device_type |= WACOM_DEVICETYPE_PAD;

        /*
         * Raw Wacom-mode pen and touch events both come from interface
         * 0, whose HID descriptor has an application usage of 0xFF0D
         * (i.e., WACOM_HID_WD_DIGITIZER). We route pen packets back
         * out through the HID_GENERIC device created for interface 1,
         * so rewrite this one to be of type WACOM_DEVICETYPE_TOUCH.
         */
        if (features->type == BAMBOO_PAD)
                features->device_type = WACOM_DEVICETYPE_TOUCH;

        if (features->type == REMOTE)
                features->device_type = WACOM_DEVICETYPE_PAD;

        if (features->type == INTUOSP2_BT ||
            features->type == INTUOSP2S_BT) {
                features->device_type |= WACOM_DEVICETYPE_PEN |
                                         WACOM_DEVICETYPE_PAD |
                                         WACOM_DEVICETYPE_TOUCH;
                features->quirks |= WACOM_QUIRK_BATTERY;
        }

        if (features->type == INTUOSHT3_BT) {
                features->device_type |= WACOM_DEVICETYPE_PEN |
                                         WACOM_DEVICETYPE_PAD;
                features->quirks |= WACOM_QUIRK_BATTERY;
        }

        switch (features->type) {
        case PL:
        case DTU:
        case DTUS:
        case DTUSX:
        case WACOM_21UX2:
        case WACOM_22HD:
        case DTK:
        case WACOM_24HD:
        case WACOM_27QHD:
        case CINTIQ_HYBRID:
        case CINTIQ_COMPANION_2:
        case CINTIQ:
        case WACOM_BEE:
        case WACOM_13HD:
        case WACOM_24HDT:
        case WACOM_27QHDT:
        case TABLETPC:
        case TABLETPCE:
        case TABLETPC2FG:
        case MTSCREEN:
        case MTTPC:
        case MTTPC_B:
                features->device_type |= WACOM_DEVICETYPE_DIRECT;
                break;
        }

        if (wacom->hdev->bus == BUS_BLUETOOTH)
                features->quirks |= WACOM_QUIRK_BATTERY;

        /* quirk for bamboo touch with 2 low res touches */
        if ((features->type == BAMBOO_PT || features->type == BAMBOO_TOUCH) &&
            features->pktlen == WACOM_PKGLEN_BBTOUCH) {
                features->x_max <<= 5;
                features->y_max <<= 5;
                features->x_fuzz <<= 5;
                features->y_fuzz <<= 5;
                features->quirks |= WACOM_QUIRK_BBTOUCH_LOWRES;
        }

        if (features->type == WIRELESS) {
                if (features->device_type == WACOM_DEVICETYPE_WL_MONITOR) {
                        features->quirks |= WACOM_QUIRK_BATTERY;
                }
        }

        if (features->type == REMOTE)
                features->device_type |= WACOM_DEVICETYPE_WL_MONITOR;

        /* HID descriptor for DTK-2451 / DTH-2452 claims to report lots
         * of things it shouldn't. Lets fix up the damage...
         */
        if (wacom->hdev->product == 0x382 || wacom->hdev->product == 0x37d) {
                features->quirks &= ~WACOM_QUIRK_TOOLSERIAL;
                __clear_bit(BTN_TOOL_BRUSH, wacom_wac->pen_input->keybit);
                __clear_bit(BTN_TOOL_PENCIL, wacom_wac->pen_input->keybit);
                __clear_bit(BTN_TOOL_AIRBRUSH, wacom_wac->pen_input->keybit);
                __clear_bit(ABS_Z, wacom_wac->pen_input->absbit);
                __clear_bit(ABS_DISTANCE, wacom_wac->pen_input->absbit);
                __clear_bit(ABS_TILT_X, wacom_wac->pen_input->absbit);
                __clear_bit(ABS_TILT_Y, wacom_wac->pen_input->absbit);
                __clear_bit(ABS_WHEEL, wacom_wac->pen_input->absbit);
                __clear_bit(ABS_MISC, wacom_wac->pen_input->absbit);
                __clear_bit(MSC_SERIAL, wacom_wac->pen_input->mscbit);
                __clear_bit(EV_MSC, wacom_wac->pen_input->evbit);
        }
}

int wacom_setup_pen_input_capabilities(struct input_dev *input_dev,
                                   struct wacom_wac *wacom_wac)
{
        struct wacom_features *features = &wacom_wac->features;

        if (!(features->device_type & WACOM_DEVICETYPE_PEN))
                return -ENODEV;

        if (features->device_type & WACOM_DEVICETYPE_DIRECT)
                __set_bit(INPUT_PROP_DIRECT, input_dev->propbit);
        else
                __set_bit(INPUT_PROP_POINTER, input_dev->propbit);

        if (features->type == HID_GENERIC)
                /* setup has already been done */
                return 0;

        input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
        __set_bit(BTN_TOUCH, input_dev->keybit);
        __set_bit(ABS_MISC, input_dev->absbit);

        input_set_abs_params(input_dev, ABS_X, 0 + features->offset_left,
                             features->x_max - features->offset_right,
                             features->x_fuzz, 0);
        input_set_abs_params(input_dev, ABS_Y, 0 + features->offset_top,
                             features->y_max - features->offset_bottom,
                             features->y_fuzz, 0);
        input_set_abs_params(input_dev, ABS_PRESSURE, 0,
                features->pressure_max, features->pressure_fuzz, 0);

        /* penabled devices have fixed resolution for each model */
        input_abs_set_res(input_dev, ABS_X, features->x_resolution);
        input_abs_set_res(input_dev, ABS_Y, features->y_resolution);

        switch (features->type) {
        case GRAPHIRE_BT:
                __clear_bit(ABS_MISC, input_dev->absbit);
                fallthrough;

        case WACOM_MO:
        case WACOM_G4:
                input_set_abs_params(input_dev, ABS_DISTANCE, 0,
                                              features->distance_max,
                                              features->distance_fuzz, 0);
                fallthrough;

        case GRAPHIRE:
                input_set_capability(input_dev, EV_REL, REL_WHEEL);

                __set_bit(BTN_LEFT, input_dev->keybit);
                __set_bit(BTN_RIGHT, input_dev->keybit);
                __set_bit(BTN_MIDDLE, input_dev->keybit);

                __set_bit(BTN_TOOL_RUBBER, input_dev->keybit);
                __set_bit(BTN_TOOL_PEN, input_dev->keybit);
                __set_bit(BTN_TOOL_MOUSE, input_dev->keybit);
                __set_bit(BTN_STYLUS, input_dev->keybit);
                __set_bit(BTN_STYLUS2, input_dev->keybit);
                break;

        case WACOM_27QHD:
        case WACOM_24HD:
        case DTK:
        case WACOM_22HD:
        case WACOM_21UX2:
        case WACOM_BEE:
        case CINTIQ:
        case WACOM_13HD:
        case CINTIQ_HYBRID:
        case CINTIQ_COMPANION_2:
                input_set_abs_params(input_dev, ABS_Z, -900, 899, 0, 0);
                input_abs_set_res(input_dev, ABS_Z, 287);
                wacom_setup_cintiq(wacom_wac);
                break;

        case INTUOS3:
        case INTUOS3L:
        case INTUOS3S:
        case INTUOS4:
        case INTUOS4WL:
        case INTUOS4L:
        case INTUOS4S:
                input_set_abs_params(input_dev, ABS_Z, -900, 899, 0, 0);
                input_abs_set_res(input_dev, ABS_Z, 287);
                fallthrough;

        case INTUOS:
                wacom_setup_intuos(wacom_wac);
                break;

        case INTUOS5:
        case INTUOS5L:
        case INTUOSPM:
        case INTUOSPL:
        case INTUOS5S:
        case INTUOSPS:
        case INTUOSP2_BT:
        case INTUOSP2S_BT:
                input_set_abs_params(input_dev, ABS_DISTANCE, 0,
                                      features->distance_max,
                                      features->distance_fuzz, 0);

                input_set_abs_params(input_dev, ABS_Z, -900, 899, 0, 0);
                input_abs_set_res(input_dev, ABS_Z, 287);

                wacom_setup_intuos(wacom_wac);
                break;

        case WACOM_24HDT:
        case WACOM_27QHDT:
        case MTSCREEN:
        case MTTPC:
        case MTTPC_B:
        case TABLETPC2FG:
        case TABLETPC:
        case TABLETPCE:
                __clear_bit(ABS_MISC, input_dev->absbit);
                fallthrough;

        case DTUS:
        case DTUSX:
        case PL:
        case DTU:
                __set_bit(BTN_TOOL_PEN, input_dev->keybit);
                __set_bit(BTN_TOOL_RUBBER, input_dev->keybit);
                __set_bit(BTN_STYLUS, input_dev->keybit);
                __set_bit(BTN_STYLUS2, input_dev->keybit);
                break;

        case PTU:
                __set_bit(BTN_STYLUS2, input_dev->keybit);
                fallthrough;

        case PENPARTNER:
                __set_bit(BTN_TOOL_PEN, input_dev->keybit);
                __set_bit(BTN_TOOL_RUBBER, input_dev->keybit);
                __set_bit(BTN_STYLUS, input_dev->keybit);
                break;

        case INTUOSHT:
        case BAMBOO_PT:
        case BAMBOO_PEN:
        case INTUOSHT2:
        case INTUOSHT3_BT:
                if (features->type == INTUOSHT2 ||
                    features->type == INTUOSHT3_BT) {
                        wacom_setup_basic_pro_pen(wacom_wac);
                } else {
                        __clear_bit(ABS_MISC, input_dev->absbit);
                        __set_bit(BTN_TOOL_PEN, input_dev->keybit);
                        __set_bit(BTN_TOOL_RUBBER, input_dev->keybit);
                        __set_bit(BTN_STYLUS, input_dev->keybit);
                        __set_bit(BTN_STYLUS2, input_dev->keybit);
                        input_set_abs_params(input_dev, ABS_DISTANCE, 0,
                                      features->distance_max,
                                      features->distance_fuzz, 0);
                }
                break;
        case BAMBOO_PAD:
                __clear_bit(ABS_MISC, input_dev->absbit);
                break;
        }
        return 0;
}

int wacom_setup_touch_input_capabilities(struct input_dev *input_dev,
                                         struct wacom_wac *wacom_wac)
{
        struct wacom_features *features = &wacom_wac->features;

        if (!(features->device_type & WACOM_DEVICETYPE_TOUCH))
                return -ENODEV;

        if (features->device_type & WACOM_DEVICETYPE_DIRECT)
                __set_bit(INPUT_PROP_DIRECT, input_dev->propbit);
        else
                __set_bit(INPUT_PROP_POINTER, input_dev->propbit);

        if (features->type == HID_GENERIC)
                /* setup has already been done */
                return 0;

        input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
        __set_bit(BTN_TOUCH, input_dev->keybit);

        if (features->touch_max == 1) {
                input_set_abs_params(input_dev, ABS_X, 0,
                        features->x_max, features->x_fuzz, 0);
                input_set_abs_params(input_dev, ABS_Y, 0,
                        features->y_max, features->y_fuzz, 0);
                input_abs_set_res(input_dev, ABS_X,
                                  features->x_resolution);
                input_abs_set_res(input_dev, ABS_Y,
                                  features->y_resolution);
        }
        else if (features->touch_max > 1) {
                input_set_abs_params(input_dev, ABS_MT_POSITION_X, 0,
                        features->x_max, features->x_fuzz, 0);
                input_set_abs_params(input_dev, ABS_MT_POSITION_Y, 0,
                        features->y_max, features->y_fuzz, 0);
                input_abs_set_res(input_dev, ABS_MT_POSITION_X,
                                  features->x_resolution);
                input_abs_set_res(input_dev, ABS_MT_POSITION_Y,
                                  features->y_resolution);
        }

        switch (features->type) {
        case INTUOSP2_BT:
        case INTUOSP2S_BT:
                input_dev->evbit[0] |= BIT_MASK(EV_SW);
                __set_bit(SW_MUTE_DEVICE, input_dev->swbit);

                if (wacom_wac->shared->touch->product == 0x361) {
                        input_set_abs_params(input_dev, ABS_MT_POSITION_X,
                                             0, 12440, 4, 0);
                        input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
                                             0, 8640, 4, 0);
                }
                else if (wacom_wac->shared->touch->product == 0x360) {
                        input_set_abs_params(input_dev, ABS_MT_POSITION_X,
                                             0, 8960, 4, 0);
                        input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
                                             0, 5920, 4, 0);
                }
                else if (wacom_wac->shared->touch->product == 0x393) {
                        input_set_abs_params(input_dev, ABS_MT_POSITION_X,
                                             0, 6400, 4, 0);
                        input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
                                             0, 4000, 4, 0);
                }
                input_abs_set_res(input_dev, ABS_MT_POSITION_X, 40);
                input_abs_set_res(input_dev, ABS_MT_POSITION_Y, 40);

                fallthrough;

        case INTUOS5:
        case INTUOS5L:
        case INTUOSPM:
        case INTUOSPL:
        case INTUOS5S:
        case INTUOSPS:
                input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, 0, features->x_max, 0, 0);
                input_set_abs_params(input_dev, ABS_MT_TOUCH_MINOR, 0, features->y_max, 0, 0);
                input_mt_init_slots(input_dev, features->touch_max, INPUT_MT_POINTER);
                break;

        case WACOM_24HDT:
                input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, 0, features->x_max, 0, 0);
                input_set_abs_params(input_dev, ABS_MT_WIDTH_MAJOR, 0, features->x_max, 0, 0);
                input_set_abs_params(input_dev, ABS_MT_WIDTH_MINOR, 0, features->y_max, 0, 0);
                input_set_abs_params(input_dev, ABS_MT_ORIENTATION, 0, 1, 0, 0);
                fallthrough;

        case WACOM_27QHDT:
                if (wacom_wac->shared->touch->product == 0x32C ||
                    wacom_wac->shared->touch->product == 0xF6) {
                        input_dev->evbit[0] |= BIT_MASK(EV_SW);
                        __set_bit(SW_MUTE_DEVICE, input_dev->swbit);
                        wacom_wac->has_mute_touch_switch = true;
                        wacom_wac->is_soft_touch_switch = true;
                }
                fallthrough;

        case MTSCREEN:
        case MTTPC:
        case MTTPC_B:
        case TABLETPC2FG:
                input_mt_init_slots(input_dev, features->touch_max, INPUT_MT_DIRECT);
                fallthrough;

        case TABLETPC:
        case TABLETPCE:
                break;

        case INTUOSHT:
        case INTUOSHT2:
                input_dev->evbit[0] |= BIT_MASK(EV_SW);
                __set_bit(SW_MUTE_DEVICE, input_dev->swbit);
                fallthrough;

        case BAMBOO_PT:
        case BAMBOO_TOUCH:
                if (features->pktlen == WACOM_PKGLEN_BBTOUCH3) {
                        input_set_abs_params(input_dev,
                                     ABS_MT_TOUCH_MAJOR,
                                     0, features->x_max, 0, 0);
                        input_set_abs_params(input_dev,
                                     ABS_MT_TOUCH_MINOR,
                                     0, features->y_max, 0, 0);
                }
                input_mt_init_slots(input_dev, features->touch_max, INPUT_MT_POINTER);
                break;

        case BAMBOO_PAD:
                input_mt_init_slots(input_dev, features->touch_max,
                                    INPUT_MT_POINTER);
                __set_bit(BTN_LEFT, input_dev->keybit);
                __set_bit(BTN_RIGHT, input_dev->keybit);
                break;
        }
        return 0;
}

static int wacom_numbered_button_to_key(int n)
{
        if (n < 10)
                return BTN_0 + n;
        else if (n < 16)
                return BTN_A + (n-10);
        else if (n < 18)
                return BTN_BASE + (n-16);
        else
                return 0;
}

static void wacom_setup_numbered_buttons(struct input_dev *input_dev,
                                int button_count)
{
        int i;

        for (i = 0; i < button_count; i++) {
                int key = wacom_numbered_button_to_key(i);

                if (key)
                        __set_bit(key, input_dev->keybit);
        }
}

static void wacom_24hd_update_leds(struct wacom *wacom, int mask, int group)
{
        struct wacom_led *led;
        int i;
        bool updated = false;

        /*
         * 24HD has LED group 1 to the left and LED group 0 to the right.
         * So group 0 matches the second half of the buttons and thus the mask
         * needs to be shifted.
         */
        if (group == 0)
                mask >>= 8;

        for (i = 0; i < 3; i++) {
                led = wacom_led_find(wacom, group, i);
                if (!led) {
                        hid_err(wacom->hdev, "can't find LED %d in group %d\n",
                                i, group);
                        continue;
                }
                if (!updated && mask & BIT(i)) {
                        led->held = true;
                        led_trigger_event(&led->trigger, LED_FULL);
                } else {
                        led->held = false;
                }
        }
}

static bool wacom_is_led_toggled(struct wacom *wacom, int button_count,
                                 int mask, int group)
{
        int group_button;

        /*
         * 21UX2 has LED group 1 to the left and LED group 0
         * to the right. We need to reverse the group to match this
         * historical behavior.
         */
        if (wacom->wacom_wac.features.type == WACOM_21UX2)
                group = 1 - group;

        group_button = group * (button_count/wacom->led.count);

        if (wacom->wacom_wac.features.type == INTUOSP2_BT)
                group_button = 8;

        return mask & (1 << group_button);
}

static void wacom_update_led(struct wacom *wacom, int button_count, int mask,
                             int group)
{
        struct wacom_led *led, *next_led;
        int cur;
        bool pressed;

        if (wacom->wacom_wac.features.type == WACOM_24HD)
                return wacom_24hd_update_leds(wacom, mask, group);

        pressed = wacom_is_led_toggled(wacom, button_count, mask, group);
        cur = wacom->led.groups[group].select;

        led = wacom_led_find(wacom, group, cur);
        if (!led) {
                hid_err(wacom->hdev, "can't find current LED %d in group %d\n",
                        cur, group);
                return;
        }

        if (!pressed) {
                led->held = false;
                return;
        }

        if (led->held && pressed)
                return;

        next_led = wacom_led_next(wacom, led);
        if (!next_led) {
                hid_err(wacom->hdev, "can't find next LED in group %d\n",
                        group);
                return;
        }
        if (next_led == led)
                return;

        next_led->held = true;
        led_trigger_event(&next_led->trigger,
                          wacom_leds_brightness_get(next_led));
}

static void wacom_report_numbered_buttons(struct input_dev *input_dev,
                                int button_count, int mask)
{
        struct wacom *wacom = input_get_drvdata(input_dev);
        int i;

        for (i = 0; i < wacom->led.count; i++)
                wacom_update_led(wacom,  button_count, mask, i);

        for (i = 0; i < button_count; i++) {
                int key = wacom_numbered_button_to_key(i);

                if (key)
                        input_report_key(input_dev, key, mask & (1 << i));
        }
}

int wacom_setup_pad_input_capabilities(struct input_dev *input_dev,
                                   struct wacom_wac *wacom_wac)
{
        struct wacom_features *features = &wacom_wac->features;

        if ((features->type == HID_GENERIC) && features->numbered_buttons > 0)
                features->device_type |= WACOM_DEVICETYPE_PAD;

        if (!(features->device_type & WACOM_DEVICETYPE_PAD))
                return -ENODEV;

        if (features->type == REMOTE && input_dev == wacom_wac->pad_input)
                return -ENODEV;

        input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);

        /* kept for making legacy xf86-input-wacom working with the wheels */
        __set_bit(ABS_MISC, input_dev->absbit);

        /* kept for making legacy xf86-input-wacom accepting the pad */
        if (!(input_dev->absinfo && (input_dev->absinfo[ABS_X].minimum ||
              input_dev->absinfo[ABS_X].maximum)))
                input_set_abs_params(input_dev, ABS_X, 0, 1, 0, 0);
        if (!(input_dev->absinfo && (input_dev->absinfo[ABS_Y].minimum ||
              input_dev->absinfo[ABS_Y].maximum)))
                input_set_abs_params(input_dev, ABS_Y, 0, 1, 0, 0);

        /* kept for making udev and libwacom accepting the pad */
        __set_bit(BTN_STYLUS, input_dev->keybit);

        wacom_setup_numbered_buttons(input_dev, features->numbered_buttons);

        switch (features->type) {

        case CINTIQ_HYBRID:
        case CINTIQ_COMPANION_2:
        case DTK:
        case DTUS:
        case GRAPHIRE_BT:
                break;

        case WACOM_MO:
                __set_bit(BTN_BACK, input_dev->keybit);
                __set_bit(BTN_LEFT, input_dev->keybit);
                __set_bit(BTN_FORWARD, input_dev->keybit);
                __set_bit(BTN_RIGHT, input_dev->keybit);
                input_set_abs_params(input_dev, ABS_WHEEL, 0, 71, 0, 0);
                break;

        case WACOM_G4:
                __set_bit(BTN_BACK, input_dev->keybit);
                __set_bit(BTN_FORWARD, input_dev->keybit);
                input_set_capability(input_dev, EV_REL, REL_WHEEL);
                break;

        case WACOM_24HD:
                __set_bit(KEY_PROG1, input_dev->keybit);
                __set_bit(KEY_PROG2, input_dev->keybit);
                __set_bit(KEY_PROG3, input_dev->keybit);

                __set_bit(KEY_ONSCREEN_KEYBOARD, input_dev->keybit);
                __set_bit(KEY_INFO, input_dev->keybit);

                if (!features->oPid)
                        __set_bit(KEY_BUTTONCONFIG, input_dev->keybit);

                input_set_abs_params(input_dev, ABS_WHEEL, 0, 71, 0, 0);
                input_set_abs_params(input_dev, ABS_THROTTLE, 0, 71, 0, 0);
                break;

        case WACOM_27QHD:
                __set_bit(KEY_PROG1, input_dev->keybit);
                __set_bit(KEY_PROG2, input_dev->keybit);
                __set_bit(KEY_PROG3, input_dev->keybit);

                __set_bit(KEY_ONSCREEN_KEYBOARD, input_dev->keybit);
                __set_bit(KEY_BUTTONCONFIG, input_dev->keybit);

                if (!features->oPid)
                        __set_bit(KEY_CONTROLPANEL, input_dev->keybit);
                input_set_abs_params(input_dev, ABS_X, -2048, 2048, 0, 0);
                input_abs_set_res(input_dev, ABS_X, 1024); /* points/g */
                input_set_abs_params(input_dev, ABS_Y, -2048, 2048, 0, 0);
                input_abs_set_res(input_dev, ABS_Y, 1024);
                input_set_abs_params(input_dev, ABS_Z, -2048, 2048, 0, 0);
                input_abs_set_res(input_dev, ABS_Z, 1024);
                __set_bit(INPUT_PROP_ACCELEROMETER, input_dev->propbit);
                break;

        case WACOM_22HD:
                __set_bit(KEY_PROG1, input_dev->keybit);
                __set_bit(KEY_PROG2, input_dev->keybit);
                __set_bit(KEY_PROG3, input_dev->keybit);

                __set_bit(KEY_BUTTONCONFIG, input_dev->keybit);
                __set_bit(KEY_INFO, input_dev->keybit);
                fallthrough;

        case WACOM_21UX2:
        case WACOM_BEE:
        case CINTIQ:
                input_set_abs_params(input_dev, ABS_RX, 0, 4096, 0, 0);
                input_set_abs_params(input_dev, ABS_RY, 0, 4096, 0, 0);
                break;

        case WACOM_13HD:
                input_set_abs_params(input_dev, ABS_WHEEL, 0, 71, 0, 0);
                break;

        case INTUOS3:
        case INTUOS3L:
                input_set_abs_params(input_dev, ABS_RY, 0, 4096, 0, 0);
                fallthrough;

        case INTUOS3S:
                input_set_abs_params(input_dev, ABS_RX, 0, 4096, 0, 0);
                break;

        case INTUOS5:
        case INTUOS5L:
        case INTUOSPM:
        case INTUOSPL:
        case INTUOS5S:
        case INTUOSPS:
        case INTUOSP2_BT:
        case INTUOSP2S_BT:
                input_set_abs_params(input_dev, ABS_WHEEL, 0, 71, 0, 0);
                break;

        case INTUOS4WL:
                /*
                 * For Bluetooth devices, the udev rule does not work correctly
                 * for pads unless we add a stylus capability, which forces
                 * ID_INPUT_TABLET to be set.
                 */
                __set_bit(BTN_STYLUS, input_dev->keybit);
                fallthrough;

        case INTUOS4:
        case INTUOS4L:
        case INTUOS4S:
                input_set_abs_params(input_dev, ABS_WHEEL, 0, 71, 0, 0);
                break;

        case INTUOSHT:
        case BAMBOO_PT:
        case BAMBOO_TOUCH:
        case INTUOSHT2:
                __clear_bit(ABS_MISC, input_dev->absbit);

                __set_bit(BTN_LEFT, input_dev->keybit);
                __set_bit(BTN_FORWARD, input_dev->keybit);
                __set_bit(BTN_BACK, input_dev->keybit);
                __set_bit(BTN_RIGHT, input_dev->keybit);

                break;

        case REMOTE:
                input_set_capability(input_dev, EV_MSC, MSC_SERIAL);
                input_set_abs_params(input_dev, ABS_WHEEL, 0, 71, 0, 0);
                break;

        case INTUOSHT3_BT:
        case HID_GENERIC:
                break;

        default:
                /* no pad supported */
                return -ENODEV;
        }
        return 0;
}

static const struct wacom_features wacom_features_0x00 =
        { "Wacom Penpartner", 5040, 3780, 255, 0,
          PENPARTNER, WACOM_PENPRTN_RES, WACOM_PENPRTN_RES };
static const struct wacom_features wacom_features_0x10 =
        { "Wacom Graphire", 10206, 7422, 511, 63,
          GRAPHIRE, WACOM_GRAPHIRE_RES, WACOM_GRAPHIRE_RES };
static const struct wacom_features wacom_features_0x81 =
        { "Wacom Graphire BT", 16704, 12064, 511, 32,
          GRAPHIRE_BT, WACOM_GRAPHIRE_RES, WACOM_GRAPHIRE_RES, 2 };
static const struct wacom_features wacom_features_0x11 =
        { "Wacom Graphire2 4x5", 10206, 7422, 511, 63,
          GRAPHIRE, WACOM_GRAPHIRE_RES, WACOM_GRAPHIRE_RES };
static const struct wacom_features wacom_features_0x12 =
        { "Wacom Graphire2 5x7", 13918, 10206, 511, 63,
          GRAPHIRE, WACOM_GRAPHIRE_RES, WACOM_GRAPHIRE_RES };
static const struct wacom_features wacom_features_0x13 =
        { "Wacom Graphire3", 10208, 7424, 511, 63,
          GRAPHIRE, WACOM_GRAPHIRE_RES, WACOM_GRAPHIRE_RES };
static const struct wacom_features wacom_features_0x14 =
        { "Wacom Graphire3 6x8", 16704, 12064, 511, 63,
          GRAPHIRE, WACOM_GRAPHIRE_RES, WACOM_GRAPHIRE_RES };
static const struct wacom_features wacom_features_0x15 =
        { "Wacom Graphire4 4x5", 10208, 7424, 511, 63,
          WACOM_G4, WACOM_GRAPHIRE_RES, WACOM_GRAPHIRE_RES };
static const struct wacom_features wacom_features_0x16 =
        { "Wacom Graphire4 6x8", 16704, 12064, 511, 63,
          WACOM_G4, WACOM_GRAPHIRE_RES, WACOM_GRAPHIRE_RES };
static const struct wacom_features wacom_features_0x17 =
        { "Wacom BambooFun 4x5", 14760, 9225, 511, 63,
          WACOM_MO, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x18 =
        { "Wacom BambooFun 6x8", 21648, 13530, 511, 63,
          WACOM_MO, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x19 =
        { "Wacom Bamboo1 Medium", 16704, 12064, 511, 63,
          GRAPHIRE, WACOM_GRAPHIRE_RES, WACOM_GRAPHIRE_RES };
static const struct wacom_features wacom_features_0x60 =
        { "Wacom Volito", 5104, 3712, 511, 63,
          GRAPHIRE, WACOM_VOLITO_RES, WACOM_VOLITO_RES };
static const struct wacom_features wacom_features_0x61 =
        { "Wacom PenStation2", 3250, 2320, 255, 63,
          GRAPHIRE, WACOM_VOLITO_RES, WACOM_VOLITO_RES };
static const struct wacom_features wacom_features_0x62 =
        { "Wacom Volito2 4x5", 5104, 3712, 511, 63,
          GRAPHIRE, WACOM_VOLITO_RES, WACOM_VOLITO_RES };
static const struct wacom_features wacom_features_0x63 =
        { "Wacom Volito2 2x3", 3248, 2320, 511, 63,
          GRAPHIRE, WACOM_VOLITO_RES, WACOM_VOLITO_RES };
static const struct wacom_features wacom_features_0x64 =
        { "Wacom PenPartner2", 3250, 2320, 511, 63,
          GRAPHIRE, WACOM_VOLITO_RES, WACOM_VOLITO_RES };
static const struct wacom_features wacom_features_0x65 =
        { "Wacom Bamboo", 14760, 9225, 511, 63,
          WACOM_MO, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x69 =
        { "Wacom Bamboo1", 5104, 3712, 511, 63,
          GRAPHIRE, WACOM_PENPRTN_RES, WACOM_PENPRTN_RES };
static const struct wacom_features wacom_features_0x6A =
        { "Wacom Bamboo1 4x6", 14760, 9225, 1023, 63,
          GRAPHIRE, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x6B =
        { "Wacom Bamboo1 5x8", 21648, 13530, 1023, 63,
          GRAPHIRE, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x20 =
        { "Wacom Intuos 4x5", 12700, 10600, 1023, 31,
          INTUOS, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x21 =
        { "Wacom Intuos 6x8", 20320, 16240, 1023, 31,
          INTUOS, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x22 =
        { "Wacom Intuos 9x12", 30480, 24060, 1023, 31,
          INTUOS, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x23 =
        { "Wacom Intuos 12x12", 30480, 31680, 1023, 31,
          INTUOS, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x24 =
        { "Wacom Intuos 12x18", 45720, 31680, 1023, 31,
          INTUOS, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x30 =
        { "Wacom PL400", 5408, 4056, 255, 0,
          PL, WACOM_PL_RES, WACOM_PL_RES };
static const struct wacom_features wacom_features_0x31 =
        { "Wacom PL500", 6144, 4608, 255, 0,
          PL, WACOM_PL_RES, WACOM_PL_RES };
static const struct wacom_features wacom_features_0x32 =
        { "Wacom PL600", 6126, 4604, 255, 0,
          PL, WACOM_PL_RES, WACOM_PL_RES };
static const struct wacom_features wacom_features_0x33 =
        { "Wacom PL600SX", 6260, 5016, 255, 0,
          PL, WACOM_PL_RES, WACOM_PL_RES };
static const struct wacom_features wacom_features_0x34 =
        { "Wacom PL550", 6144, 4608, 511, 0,
          PL, WACOM_PL_RES, WACOM_PL_RES };
static const struct wacom_features wacom_features_0x35 =
        { "Wacom PL800", 7220, 5780, 511, 0,
          PL, WACOM_PL_RES, WACOM_PL_RES };
static const struct wacom_features wacom_features_0x37 =
        { "Wacom PL700", 6758, 5406, 511, 0,
          PL, WACOM_PL_RES, WACOM_PL_RES };
static const struct wacom_features wacom_features_0x38 =
        { "Wacom PL510", 6282, 4762, 511, 0,
          PL, WACOM_PL_RES, WACOM_PL_RES };
static const struct wacom_features wacom_features_0x39 =
        { "Wacom DTU710", 34080, 27660, 511, 0,
          PL, WACOM_PL_RES, WACOM_PL_RES };
static const struct wacom_features wacom_features_0xC4 =
        { "Wacom DTF521", 6282, 4762, 511, 0,
          PL, WACOM_PL_RES, WACOM_PL_RES };
static const struct wacom_features wacom_features_0xC0 =
        { "Wacom DTF720", 6858, 5506, 511, 0,
          PL, WACOM_PL_RES, WACOM_PL_RES };
static const struct wacom_features wacom_features_0xC2 =
        { "Wacom DTF720a", 6858, 5506, 511, 0,
          PL, WACOM_PL_RES, WACOM_PL_RES };
static const struct wacom_features wacom_features_0x03 =
        { "Wacom Cintiq Partner", 20480, 15360, 511, 0,
          PTU, WACOM_PL_RES, WACOM_PL_RES };
static const struct wacom_features wacom_features_0x41 =
        { "Wacom Intuos2 4x5", 12700, 10600, 1023, 31,
          INTUOS, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x42 =
        { "Wacom Intuos2 6x8", 20320, 16240, 1023, 31,
          INTUOS, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x43 =
        { "Wacom Intuos2 9x12", 30480, 24060, 1023, 31,
          INTUOS, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x44 =
        { "Wacom Intuos2 12x12", 30480, 31680, 1023, 31,
          INTUOS, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x45 =
        { "Wacom Intuos2 12x18", 45720, 31680, 1023, 31,
          INTUOS, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0xB0 =
        { "Wacom Intuos3 4x5", 25400, 20320, 1023, 63,
          INTUOS3S, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 4 };
static const struct wacom_features wacom_features_0xB1 =
        { "Wacom Intuos3 6x8", 40640, 30480, 1023, 63,
          INTUOS3, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 8 };
static const struct wacom_features wacom_features_0xB2 =
        { "Wacom Intuos3 9x12", 60960, 45720, 1023, 63,
          INTUOS3, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 8 };
static const struct wacom_features wacom_features_0xB3 =
        { "Wacom Intuos3 12x12", 60960, 60960, 1023, 63,
          INTUOS3L, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 8 };
static const struct wacom_features wacom_features_0xB4 =
        { "Wacom Intuos3 12x19", 97536, 60960, 1023, 63,
          INTUOS3L, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 8 };
static const struct wacom_features wacom_features_0xB5 =
        { "Wacom Intuos3 6x11", 54204, 31750, 1023, 63,
          INTUOS3, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 8 };
static const struct wacom_features wacom_features_0xB7 =
        { "Wacom Intuos3 4x6", 31496, 19685, 1023, 63,
          INTUOS3S, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 4 };
static const struct wacom_features wacom_features_0xB8 =
        { "Wacom Intuos4 4x6", 31496, 19685, 2047, 63,
          INTUOS4S, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 7 };
static const struct wacom_features wacom_features_0xB9 =
        { "Wacom Intuos4 6x9", 44704, 27940, 2047, 63,
          INTUOS4, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 9 };
static const struct wacom_features wacom_features_0xBA =
        { "Wacom Intuos4 8x13", 65024, 40640, 2047, 63,
          INTUOS4L, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 9 };
static const struct wacom_features wacom_features_0xBB =
        { "Wacom Intuos4 12x19", 97536, 60960, 2047, 63,
          INTUOS4L, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 9 };
static const struct wacom_features wacom_features_0xBC =
        { "Wacom Intuos4 WL", 40640, 25400, 2047, 63,
          INTUOS4, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 9 };
static const struct wacom_features wacom_features_0xBD =
        { "Wacom Intuos4 WL", 40640, 25400, 2047, 63,
          INTUOS4WL, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 9 };
static const struct wacom_features wacom_features_0x26 =
        { "Wacom Intuos5 touch S", 31496, 19685, 2047, 63,
          INTUOS5S, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 7, .touch_max = 16 };
static const struct wacom_features wacom_features_0x27 =
        { "Wacom Intuos5 touch M", 44704, 27940, 2047, 63,
          INTUOS5, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 9, .touch_max = 16 };
static const struct wacom_features wacom_features_0x28 =
        { "Wacom Intuos5 touch L", 65024, 40640, 2047, 63,
          INTUOS5L, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 9, .touch_max = 16 };
static const struct wacom_features wacom_features_0x29 =
        { "Wacom Intuos5 S", 31496, 19685, 2047, 63,
          INTUOS5S, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 7 };
static const struct wacom_features wacom_features_0x2A =
        { "Wacom Intuos5 M", 44704, 27940, 2047, 63,
          INTUOS5, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 9 };
static const struct wacom_features wacom_features_0x314 =
        { "Wacom Intuos Pro S", 31496, 19685, 2047, 63,
          INTUOSPS, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 7, .touch_max = 16,
          .check_for_hid_type = true, .hid_type = HID_TYPE_USBNONE };
static const struct wacom_features wacom_features_0x315 =
        { "Wacom Intuos Pro M", 44704, 27940, 2047, 63,
          INTUOSPM, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 9, .touch_max = 16,
          .check_for_hid_type = true, .hid_type = HID_TYPE_USBNONE };
static const struct wacom_features wacom_features_0x317 =
        { "Wacom Intuos Pro L", 65024, 40640, 2047, 63,
          INTUOSPL, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 9, .touch_max = 16,
          .check_for_hid_type = true, .hid_type = HID_TYPE_USBNONE };
static const struct wacom_features wacom_features_0xF4 =
        { "Wacom Cintiq 24HD", 104480, 65600, 2047, 63,
          WACOM_24HD, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 16,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET };
static const struct wacom_features wacom_features_0xF8 =
        { "Wacom Cintiq 24HD touch", 104480, 65600, 2047, 63, /* Pen */
          WACOM_24HD, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 16,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET,
          .oVid = USB_VENDOR_ID_WACOM, .oPid = 0xf6 };
static const struct wacom_features wacom_features_0xF6 =
        { "Wacom Cintiq 24HD touch", .type = WACOM_24HDT, /* Touch */
          .oVid = USB_VENDOR_ID_WACOM, .oPid = 0xf8, .touch_max = 10,
          .check_for_hid_type = true, .hid_type = HID_TYPE_USBNONE };
static const struct wacom_features wacom_features_0x32A =
        { "Wacom Cintiq 27QHD", 120140, 67920, 2047, 63,
          WACOM_27QHD, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 0,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET };
static const struct wacom_features wacom_features_0x32B =
        { "Wacom Cintiq 27QHD touch", 120140, 67920, 2047, 63,
          WACOM_27QHD, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 0,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET,
          .oVid = USB_VENDOR_ID_WACOM, .oPid = 0x32C };
static const struct wacom_features wacom_features_0x32C =
        { "Wacom Cintiq 27QHD touch", .type = WACOM_27QHDT,
          .oVid = USB_VENDOR_ID_WACOM, .oPid = 0x32B, .touch_max = 10 };
static const struct wacom_features wacom_features_0x3F =
        { "Wacom Cintiq 21UX", 87200, 65600, 1023, 63,
          CINTIQ, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 8 };
static const struct wacom_features wacom_features_0xC5 =
        { "Wacom Cintiq 20WSX", 86680, 54180, 1023, 63,
          WACOM_BEE, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 10 };
static const struct wacom_features wacom_features_0xC6 =
        { "Wacom Cintiq 12WX", 53020, 33440, 1023, 63,
          WACOM_BEE, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 10 };
static const struct wacom_features wacom_features_0x304 =
        { "Wacom Cintiq 13HD", 59552, 33848, 1023, 63,
          WACOM_13HD, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 9,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET };
static const struct wacom_features wacom_features_0x333 =
        { "Wacom Cintiq 13HD touch", 59552, 33848, 2047, 63,
          WACOM_13HD, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 9,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET,
          .oVid = USB_VENDOR_ID_WACOM, .oPid = 0x335 };
static const struct wacom_features wacom_features_0x335 =
        { "Wacom Cintiq 13HD touch", .type = WACOM_24HDT, /* Touch */
          .oVid = USB_VENDOR_ID_WACOM, .oPid = 0x333, .touch_max = 10,
          .check_for_hid_type = true, .hid_type = HID_TYPE_USBNONE };
static const struct wacom_features wacom_features_0xC7 =
        { "Wacom DTU1931", 37832, 30305, 511, 0,
          PL, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0xCE =
        { "Wacom DTU2231", 47864, 27011, 511, 0,
          DTU, WACOM_INTUOS_RES, WACOM_INTUOS_RES,
          .check_for_hid_type = true, .hid_type = HID_TYPE_USBMOUSE };
static const struct wacom_features wacom_features_0xF0 =
        { "Wacom DTU1631", 34623, 19553, 511, 0,
          DTU, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0xFB =
        { "Wacom DTU1031", 22096, 13960, 511, 0,
          DTUS, WACOM_INTUOS_RES, WACOM_INTUOS_RES, 4,
          WACOM_DTU_OFFSET, WACOM_DTU_OFFSET,
          WACOM_DTU_OFFSET, WACOM_DTU_OFFSET };
static const struct wacom_features wacom_features_0x32F =
        { "Wacom DTU1031X", 22672, 12928, 511, 0,
          DTUSX, WACOM_INTUOS_RES, WACOM_INTUOS_RES, 0,
          WACOM_DTU_OFFSET, WACOM_DTU_OFFSET,
          WACOM_DTU_OFFSET, WACOM_DTU_OFFSET };
static const struct wacom_features wacom_features_0x336 =
        { "Wacom DTU1141", 23672, 13403, 1023, 0,
          DTUS, WACOM_INTUOS_RES, WACOM_INTUOS_RES, 4,
          WACOM_DTU_OFFSET, WACOM_DTU_OFFSET,
          WACOM_DTU_OFFSET, WACOM_DTU_OFFSET };
static const struct wacom_features wacom_features_0x57 =
        { "Wacom DTK2241", 95840, 54260, 2047, 63,
          DTK, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 6,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET };
static const struct wacom_features wacom_features_0x59 = /* Pen */
        { "Wacom DTH2242", 95840, 54260, 2047, 63,
          DTK, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 6,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET,
          .oVid = USB_VENDOR_ID_WACOM, .oPid = 0x5D };
static const struct wacom_features wacom_features_0x5D = /* Touch */
        { "Wacom DTH2242",       .type = WACOM_24HDT,
          .oVid = USB_VENDOR_ID_WACOM, .oPid = 0x59, .touch_max = 10,
          .check_for_hid_type = true, .hid_type = HID_TYPE_USBNONE };
static const struct wacom_features wacom_features_0xCC =
        { "Wacom Cintiq 21UX2", 87200, 65600, 2047, 63,
          WACOM_21UX2, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 18,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET };
static const struct wacom_features wacom_features_0xFA =
        { "Wacom Cintiq 22HD", 95840, 54260, 2047, 63,
          WACOM_22HD, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 18,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET };
static const struct wacom_features wacom_features_0x5B =
        { "Wacom Cintiq 22HDT", 95840, 54260, 2047, 63,
          WACOM_22HD, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 18,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET,
          .oVid = USB_VENDOR_ID_WACOM, .oPid = 0x5e };
static const struct wacom_features wacom_features_0x5E =
        { "Wacom Cintiq 22HDT", .type = WACOM_24HDT,
          .oVid = USB_VENDOR_ID_WACOM, .oPid = 0x5b, .touch_max = 10,
          .check_for_hid_type = true, .hid_type = HID_TYPE_USBNONE };
static const struct wacom_features wacom_features_0x90 =
        { "Wacom ISDv4 90", 26202, 16325, 255, 0,
          TABLETPC, WACOM_INTUOS_RES, WACOM_INTUOS_RES }; /* Pen-only */
static const struct wacom_features wacom_features_0x93 =
        { "Wacom ISDv4 93", 26202, 16325, 255, 0,
          TABLETPC, WACOM_INTUOS_RES, WACOM_INTUOS_RES, .touch_max = 1 };
static const struct wacom_features wacom_features_0x97 =
        { "Wacom ISDv4 97", 26202, 16325, 511, 0,
          TABLETPC, WACOM_INTUOS_RES, WACOM_INTUOS_RES }; /* Pen-only */
static const struct wacom_features wacom_features_0x9A =
        { "Wacom ISDv4 9A", 26202, 16325, 255, 0,
          TABLETPC, WACOM_INTUOS_RES, WACOM_INTUOS_RES, .touch_max = 1 };
static const struct wacom_features wacom_features_0x9F =
        { "Wacom ISDv4 9F", 26202, 16325, 255, 0,
          TABLETPC, WACOM_INTUOS_RES, WACOM_INTUOS_RES, .touch_max = 1 };
static const struct wacom_features wacom_features_0xE2 =
        { "Wacom ISDv4 E2", 26202, 16325, 255, 0,
          TABLETPC2FG, WACOM_INTUOS_RES, WACOM_INTUOS_RES, .touch_max = 2 };
static const struct wacom_features wacom_features_0xE3 =
        { "Wacom ISDv4 E3", 26202, 16325, 255, 0,
          TABLETPC2FG, WACOM_INTUOS_RES, WACOM_INTUOS_RES, .touch_max = 2 };
static const struct wacom_features wacom_features_0xE5 =
        { "Wacom ISDv4 E5", 26202, 16325, 255, 0,
          MTSCREEN, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0xE6 =
        { "Wacom ISDv4 E6", 27760, 15694, 255, 0,
          TABLETPC2FG, WACOM_INTUOS_RES, WACOM_INTUOS_RES, .touch_max = 2 };
static const struct wacom_features wacom_features_0xEC =
        { "Wacom ISDv4 EC", 25710, 14500, 255, 0,
          TABLETPC,    WACOM_INTUOS_RES, WACOM_INTUOS_RES }; /* Pen-only */
static const struct wacom_features wacom_features_0xED =
        { "Wacom ISDv4 ED", 26202, 16325, 255, 0,
          TABLETPCE, WACOM_INTUOS_RES, WACOM_INTUOS_RES, .touch_max = 1 };
static const struct wacom_features wacom_features_0xEF =
        { "Wacom ISDv4 EF", 26202, 16325, 255, 0,
          TABLETPC, WACOM_INTUOS_RES, WACOM_INTUOS_RES }; /* Pen-only */
static const struct wacom_features wacom_features_0x100 =
        { "Wacom ISDv4 100", 26202, 16325, 255, 0,
          MTTPC, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x101 =
        { "Wacom ISDv4 101", 26202, 16325, 255, 0,
          MTTPC, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x10D =
        { "Wacom ISDv4 10D", 26202, 16325, 255, 0,
          MTTPC, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x10E =
        { "Wacom ISDv4 10E", 27760, 15694, 255, 0,
          MTTPC, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x10F =
        { "Wacom ISDv4 10F", 27760, 15694, 255, 0,
          MTTPC, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x116 =
        { "Wacom ISDv4 116", 26202, 16325, 255, 0,
          TABLETPCE, WACOM_INTUOS_RES, WACOM_INTUOS_RES, .touch_max = 1 };
static const struct wacom_features wacom_features_0x12C =
        { "Wacom ISDv4 12C", 27848, 15752, 2047, 0,
          TABLETPC, WACOM_INTUOS_RES, WACOM_INTUOS_RES }; /* Pen-only */
static const struct wacom_features wacom_features_0x4001 =
        { "Wacom ISDv4 4001", 26202, 16325, 255, 0,
          MTTPC, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x4004 =
        { "Wacom ISDv4 4004", 11060, 6220, 255, 0,
          MTTPC_B, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x5000 =
        { "Wacom ISDv4 5000", 27848, 15752, 1023, 0,
          MTTPC_B, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x5002 =
        { "Wacom ISDv4 5002", 29576, 16724, 1023, 0,
          MTTPC_B, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x47 =
        { "Wacom Intuos2 6x8", 20320, 16240, 1023, 31,
          INTUOS, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x84 =
        { "Wacom Wireless Receiver", .type = WIRELESS, .touch_max = 16 };
static const struct wacom_features wacom_features_0xD0 =
        { "Wacom Bamboo 2FG", 14720, 9200, 1023, 31,
          BAMBOO_TOUCH, WACOM_INTUOS_RES, WACOM_INTUOS_RES, .touch_max = 2 };
static const struct wacom_features wacom_features_0xD1 =
        { "Wacom Bamboo 2FG 4x5", 14720, 9200, 1023, 31,
          BAMBOO_PT, WACOM_INTUOS_RES, WACOM_INTUOS_RES, .touch_max = 2 };
static const struct wacom_features wacom_features_0xD2 =
        { "Wacom Bamboo Craft", 14720, 9200, 1023, 31,
          BAMBOO_PT, WACOM_INTUOS_RES, WACOM_INTUOS_RES, .touch_max = 2 };
static const struct wacom_features wacom_features_0xD3 =
        { "Wacom Bamboo 2FG 6x8", 21648, 13700, 1023, 31,
          BAMBOO_PT, WACOM_INTUOS_RES, WACOM_INTUOS_RES, .touch_max = 2 };
static const struct wacom_features wacom_features_0xD4 =
        { "Wacom Bamboo Pen", 14720, 9200, 1023, 31,
          BAMBOO_PEN, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0xD5 =
        { "Wacom Bamboo Pen 6x8", 21648, 13700, 1023, 31,
          BAMBOO_PEN, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0xD6 =
        { "Wacom BambooPT 2FG 4x5", 14720, 9200, 1023, 31,
          BAMBOO_PT, WACOM_INTUOS_RES, WACOM_INTUOS_RES, .touch_max = 2 };
static const struct wacom_features wacom_features_0xD7 =
        { "Wacom BambooPT 2FG Small", 14720, 9200, 1023, 31,
          BAMBOO_PT, WACOM_INTUOS_RES, WACOM_INTUOS_RES, .touch_max = 2 };
static const struct wacom_features wacom_features_0xD8 =
        { "Wacom Bamboo Comic 2FG", 21648, 13700, 1023, 31,
          BAMBOO_PT, WACOM_INTUOS_RES, WACOM_INTUOS_RES, .touch_max = 2 };
static const struct wacom_features wacom_features_0xDA =
        { "Wacom Bamboo 2FG 4x5 SE", 14720, 9200, 1023, 31,
          BAMBOO_PT, WACOM_INTUOS_RES, WACOM_INTUOS_RES, .touch_max = 2 };
static const struct wacom_features wacom_features_0xDB =
        { "Wacom Bamboo 2FG 6x8 SE", 21648, 13700, 1023, 31,
          BAMBOO_PT, WACOM_INTUOS_RES, WACOM_INTUOS_RES, .touch_max = 2 };
static const struct wacom_features wacom_features_0xDD =
        { "Wacom Bamboo Connect", 14720, 9200, 1023, 31,
          BAMBOO_PT, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0xDE =
        { "Wacom Bamboo 16FG 4x5", 14720, 9200, 1023, 31,
          BAMBOO_PT, WACOM_INTUOS_RES, WACOM_INTUOS_RES, .touch_max = 16 };
static const struct wacom_features wacom_features_0xDF =
        { "Wacom Bamboo 16FG 6x8", 21648, 13700, 1023, 31,
          BAMBOO_PT, WACOM_INTUOS_RES, WACOM_INTUOS_RES, .touch_max = 16 };
static const struct wacom_features wacom_features_0x300 =
        { "Wacom Bamboo One S", 14720, 9225, 1023, 31,
          BAMBOO_PEN, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x301 =
        { "Wacom Bamboo One M", 21648, 13530, 1023, 31,
          BAMBOO_PEN, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x302 =
        { "Wacom Intuos PT S", 15200, 9500, 1023, 31,
          INTUOSHT, WACOM_INTUOS_RES, WACOM_INTUOS_RES, .touch_max = 16,
          .check_for_hid_type = true, .hid_type = HID_TYPE_USBNONE };
static const struct wacom_features wacom_features_0x303 =
        { "Wacom Intuos PT M", 21600, 13500, 1023, 31,
          INTUOSHT, WACOM_INTUOS_RES, WACOM_INTUOS_RES, .touch_max = 16,
          .check_for_hid_type = true, .hid_type = HID_TYPE_USBNONE };
static const struct wacom_features wacom_features_0x30E =
        { "Wacom Intuos S", 15200, 9500, 1023, 31,
          INTUOSHT, WACOM_INTUOS_RES, WACOM_INTUOS_RES,
          .check_for_hid_type = true, .hid_type = HID_TYPE_USBNONE };
static const struct wacom_features wacom_features_0x6004 =
        { "ISD-V4", 12800, 8000, 255, 0,
          TABLETPC, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x307 =
        { "Wacom ISDv5 307", 59552, 33848, 2047, 63,
          CINTIQ_HYBRID, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 9,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET,
          .oVid = USB_VENDOR_ID_WACOM, .oPid = 0x309 };
static const struct wacom_features wacom_features_0x309 =
        { "Wacom ISDv5 309", .type = WACOM_24HDT, /* Touch */
          .oVid = USB_VENDOR_ID_WACOM, .oPid = 0x0307, .touch_max = 10,
          .check_for_hid_type = true, .hid_type = HID_TYPE_USBNONE };
static const struct wacom_features wacom_features_0x30A =
        { "Wacom ISDv5 30A", 59552, 33848, 2047, 63,
          CINTIQ_HYBRID, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 9,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET,
          .oVid = USB_VENDOR_ID_WACOM, .oPid = 0x30C };
static const struct wacom_features wacom_features_0x30C =
        { "Wacom ISDv5 30C", .type = WACOM_24HDT, /* Touch */
          .oVid = USB_VENDOR_ID_WACOM, .oPid = 0x30A, .touch_max = 10,
          .check_for_hid_type = true, .hid_type = HID_TYPE_USBNONE };
static const struct wacom_features wacom_features_0x318 =
        { "Wacom USB Bamboo PAD", 4095, 4095, /* Touch */
          .type = BAMBOO_PAD, 35, 48, .touch_max = 4 };
static const struct wacom_features wacom_features_0x319 =
        { "Wacom Wireless Bamboo PAD", 4095, 4095, /* Touch */
          .type = BAMBOO_PAD, 35, 48, .touch_max = 4 };
static const struct wacom_features wacom_features_0x325 =
        { "Wacom ISDv5 325", 59552, 33848, 2047, 63,
          CINTIQ_COMPANION_2, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 11,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET,
          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET,
          .oVid = USB_VENDOR_ID_WACOM, .oPid = 0x326 };
static const struct wacom_features wacom_features_0x326 = /* Touch */
        { "Wacom ISDv5 326", .type = HID_GENERIC, .oVid = USB_VENDOR_ID_WACOM,
          .oPid = 0x325 };
static const struct wacom_features wacom_features_0x323 =
        { "Wacom Intuos P M", 21600, 13500, 1023, 31,
          INTUOSHT, WACOM_INTUOS_RES, WACOM_INTUOS_RES,
          .check_for_hid_type = true, .hid_type = HID_TYPE_USBNONE };
static const struct wacom_features wacom_features_0x331 =
        { "Wacom Express Key Remote", .type = REMOTE,
          .numbered_buttons = 18, .check_for_hid_type = true,
          .hid_type = HID_TYPE_USBNONE };
static const struct wacom_features wacom_features_0x33B =
        { "Wacom Intuos S 2", 15200, 9500, 2047, 63,
          INTUOSHT2, WACOM_INTUOS_RES, WACOM_INTUOS_RES,
          .check_for_hid_type = true, .hid_type = HID_TYPE_USBNONE };
static const struct wacom_features wacom_features_0x33C =
        { "Wacom Intuos PT S 2", 15200, 9500, 2047, 63,
          INTUOSHT2, WACOM_INTUOS_RES, WACOM_INTUOS_RES, .touch_max = 16,
          .check_for_hid_type = true, .hid_type = HID_TYPE_USBNONE };
static const struct wacom_features wacom_features_0x33D =
        { "Wacom Intuos P M 2", 21600, 13500, 2047, 63,
          INTUOSHT2, WACOM_INTUOS_RES, WACOM_INTUOS_RES,
          .check_for_hid_type = true, .hid_type = HID_TYPE_USBNONE };
static const struct wacom_features wacom_features_0x33E =
        { "Wacom Intuos PT M 2", 21600, 13500, 2047, 63,
          INTUOSHT2, WACOM_INTUOS_RES, WACOM_INTUOS_RES, .touch_max = 16,
          .check_for_hid_type = true, .hid_type = HID_TYPE_USBNONE };
static const struct wacom_features wacom_features_0x343 =
        { "Wacom DTK1651", 34816, 19759, 1023, 0,
          DTUS, WACOM_INTUOS_RES, WACOM_INTUOS_RES, 4,
          WACOM_DTU_OFFSET, WACOM_DTU_OFFSET,
          WACOM_DTU_OFFSET, WACOM_DTU_OFFSET };
static const struct wacom_features wacom_features_0x360 =
        { "Wacom Intuos Pro M", 44800, 29600, 8191, 63,
          INTUOSP2_BT, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 9, .touch_max = 10 };
static const struct wacom_features wacom_features_0x361 =
        { "Wacom Intuos Pro L", 62200, 43200, 8191, 63,
          INTUOSP2_BT, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 9, .touch_max = 10 };
static const struct wacom_features wacom_features_0x377 =
        { "Wacom Intuos BT S", 15200, 9500, 4095, 63,
          INTUOSHT3_BT, WACOM_INTUOS_RES, WACOM_INTUOS_RES, 4 };
static const struct wacom_features wacom_features_0x379 =
        { "Wacom Intuos BT M", 21600, 13500, 4095, 63,
          INTUOSHT3_BT, WACOM_INTUOS_RES, WACOM_INTUOS_RES, 4 };
static const struct wacom_features wacom_features_0x37A =
        { "Wacom One by Wacom S", 15200, 9500, 2047, 63,
          BAMBOO_PEN, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x37B =
        { "Wacom One by Wacom M", 21600, 13500, 2047, 63,
          BAMBOO_PEN, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0x393 =
        { "Wacom Intuos Pro S", 31920, 19950, 8191, 63,
          INTUOSP2S_BT, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 7,
          .touch_max = 10 };
static const struct wacom_features wacom_features_0x3c6 =
        { "Wacom Intuos BT S", 15200, 9500, 4095, 63,
          INTUOSHT3_BT, WACOM_INTUOS_RES, WACOM_INTUOS_RES, 4 };
static const struct wacom_features wacom_features_0x3c8 =
        { "Wacom Intuos BT M", 21600, 13500, 4095, 63,
          INTUOSHT3_BT, WACOM_INTUOS_RES, WACOM_INTUOS_RES, 4 };
static const struct wacom_features wacom_features_0x3dd =
        { "Wacom Intuos Pro S", 31920, 19950, 8191, 63,
          INTUOSP2S_BT, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES, 7,
          .touch_max = 10 };

static const struct wacom_features wacom_features_HID_ANY_ID =
        { "Wacom HID", .type = HID_GENERIC, .oVid = HID_ANY_ID, .oPid = HID_ANY_ID };

static const struct wacom_features wacom_features_0x94 =
        { "Wacom Bootloader", .type = BOOTLOADER };

#define USB_DEVICE_WACOM(prod)                                          \
        HID_DEVICE(BUS_USB, HID_GROUP_WACOM, USB_VENDOR_ID_WACOM, prod),\
        .driver_data = (kernel_ulong_t)&wacom_features_##prod

#define BT_DEVICE_WACOM(prod)                                           \
        HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_WACOM, USB_VENDOR_ID_WACOM, prod),\
        .driver_data = (kernel_ulong_t)&wacom_features_##prod

#define I2C_DEVICE_WACOM(prod)                                          \
        HID_DEVICE(BUS_I2C, HID_GROUP_WACOM, USB_VENDOR_ID_WACOM, prod),\
        .driver_data = (kernel_ulong_t)&wacom_features_##prod

#define PCI_DEVICE_WACOM(prod)                                          \
        HID_DEVICE(BUS_PCI, HID_GROUP_WACOM, USB_VENDOR_ID_WACOM, prod),\
        .driver_data = (kernel_ulong_t)&wacom_features_##prod

#define USB_DEVICE_LENOVO(prod)                                 \
        HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, prod),                     \
        .driver_data = (kernel_ulong_t)&wacom_features_##prod

const struct hid_device_id wacom_ids[] = {
        { USB_DEVICE_WACOM(0x00) },
        { USB_DEVICE_WACOM(0x03) },
        { USB_DEVICE_WACOM(0x10) },
        { USB_DEVICE_WACOM(0x11) },
        { USB_DEVICE_WACOM(0x12) },
        { USB_DEVICE_WACOM(0x13) },
        { USB_DEVICE_WACOM(0x14) },
        { USB_DEVICE_WACOM(0x15) },
        { USB_DEVICE_WACOM(0x16) },
        { USB_DEVICE_WACOM(0x17) },
        { USB_DEVICE_WACOM(0x18) },
        { USB_DEVICE_WACOM(0x19) },
        { USB_DEVICE_WACOM(0x20) },
        { USB_DEVICE_WACOM(0x21) },
        { USB_DEVICE_WACOM(0x22) },
        { USB_DEVICE_WACOM(0x23) },
        { USB_DEVICE_WACOM(0x24) },
        { USB_DEVICE_WACOM(0x26) },
        { USB_DEVICE_WACOM(0x27) },
        { USB_DEVICE_WACOM(0x28) },
        { USB_DEVICE_WACOM(0x29) },
        { USB_DEVICE_WACOM(0x2A) },
        { USB_DEVICE_WACOM(0x30) },
        { USB_DEVICE_WACOM(0x31) },
        { USB_DEVICE_WACOM(0x32) },
        { USB_DEVICE_WACOM(0x33) },
        { USB_DEVICE_WACOM(0x34) },
        { USB_DEVICE_WACOM(0x35) },
        { USB_DEVICE_WACOM(0x37) },
        { USB_DEVICE_WACOM(0x38) },
        { USB_DEVICE_WACOM(0x39) },
        { USB_DEVICE_WACOM(0x3F) },
        { USB_DEVICE_WACOM(0x41) },
        { USB_DEVICE_WACOM(0x42) },
        { USB_DEVICE_WACOM(0x43) },
        { USB_DEVICE_WACOM(0x44) },
        { USB_DEVICE_WACOM(0x45) },
        { USB_DEVICE_WACOM(0x47) },
        { USB_DEVICE_WACOM(0x57) },
        { USB_DEVICE_WACOM(0x59) },
        { USB_DEVICE_WACOM(0x5B) },
        { USB_DEVICE_WACOM(0x5D) },
        { USB_DEVICE_WACOM(0x5E) },
        { USB_DEVICE_WACOM(0x60) },
        { USB_DEVICE_WACOM(0x61) },
        { USB_DEVICE_WACOM(0x62) },
        { USB_DEVICE_WACOM(0x63) },
        { USB_DEVICE_WACOM(0x64) },
        { USB_DEVICE_WACOM(0x65) },
        { USB_DEVICE_WACOM(0x69) },
        { USB_DEVICE_WACOM(0x6A) },
        { USB_DEVICE_WACOM(0x6B) },
        { BT_DEVICE_WACOM(0x81) },
        { USB_DEVICE_WACOM(0x84) },
        { USB_DEVICE_WACOM(0x90) },
        { USB_DEVICE_WACOM(0x93) },
        { USB_DEVICE_WACOM(0x94) },
        { USB_DEVICE_WACOM(0x97) },
        { USB_DEVICE_WACOM(0x9A) },
        { USB_DEVICE_WACOM(0x9F) },
        { USB_DEVICE_WACOM(0xB0) },
        { USB_DEVICE_WACOM(0xB1) },
        { USB_DEVICE_WACOM(0xB2) },
        { USB_DEVICE_WACOM(0xB3) },
        { USB_DEVICE_WACOM(0xB4) },
        { USB_DEVICE_WACOM(0xB5) },
        { USB_DEVICE_WACOM(0xB7) },
        { USB_DEVICE_WACOM(0xB8) },
        { USB_DEVICE_WACOM(0xB9) },
        { USB_DEVICE_WACOM(0xBA) },
        { USB_DEVICE_WACOM(0xBB) },
        { USB_DEVICE_WACOM(0xBC) },
        { BT_DEVICE_WACOM(0xBD) },
        { USB_DEVICE_WACOM(0xC0) },
        { USB_DEVICE_WACOM(0xC2) },
        { USB_DEVICE_WACOM(0xC4) },
        { USB_DEVICE_WACOM(0xC5) },
        { USB_DEVICE_WACOM(0xC6) },
        { USB_DEVICE_WACOM(0xC7) },
        { USB_DEVICE_WACOM(0xCC) },
        { USB_DEVICE_WACOM(0xCE) },
        { USB_DEVICE_WACOM(0xD0) },
        { USB_DEVICE_WACOM(0xD1) },
        { USB_DEVICE_WACOM(0xD2) },
        { USB_DEVICE_WACOM(0xD3) },
        { USB_DEVICE_WACOM(0xD4) },
        { USB_DEVICE_WACOM(0xD5) },
        { USB_DEVICE_WACOM(0xD6) },
        { USB_DEVICE_WACOM(0xD7) },
        { USB_DEVICE_WACOM(0xD8) },
        { USB_DEVICE_WACOM(0xDA) },
        { USB_DEVICE_WACOM(0xDB) },
        { USB_DEVICE_WACOM(0xDD) },
        { USB_DEVICE_WACOM(0xDE) },
        { USB_DEVICE_WACOM(0xDF) },
        { USB_DEVICE_WACOM(0xE2) },
        { USB_DEVICE_WACOM(0xE3) },
        { USB_DEVICE_WACOM(0xE5) },
        { USB_DEVICE_WACOM(0xE6) },
        { USB_DEVICE_WACOM(0xEC) },
        { USB_DEVICE_WACOM(0xED) },
        { USB_DEVICE_WACOM(0xEF) },
        { USB_DEVICE_WACOM(0xF0) },
        { USB_DEVICE_WACOM(0xF4) },
        { USB_DEVICE_WACOM(0xF6) },
        { USB_DEVICE_WACOM(0xF8) },
        { USB_DEVICE_WACOM(0xFA) },
        { USB_DEVICE_WACOM(0xFB) },
        { USB_DEVICE_WACOM(0x100) },
        { USB_DEVICE_WACOM(0x101) },
        { USB_DEVICE_WACOM(0x10D) },
        { USB_DEVICE_WACOM(0x10E) },
        { USB_DEVICE_WACOM(0x10F) },
        { USB_DEVICE_WACOM(0x116) },
        { USB_DEVICE_WACOM(0x12C) },
        { USB_DEVICE_WACOM(0x300) },
        { USB_DEVICE_WACOM(0x301) },
        { USB_DEVICE_WACOM(0x302) },
        { USB_DEVICE_WACOM(0x303) },
        { USB_DEVICE_WACOM(0x304) },
        { USB_DEVICE_WACOM(0x307) },
        { USB_DEVICE_WACOM(0x309) },
        { USB_DEVICE_WACOM(0x30A) },
        { USB_DEVICE_WACOM(0x30C) },
        { USB_DEVICE_WACOM(0x30E) },
        { USB_DEVICE_WACOM(0x314) },
        { USB_DEVICE_WACOM(0x315) },
        { USB_DEVICE_WACOM(0x317) },
        { USB_DEVICE_WACOM(0x318) },
        { USB_DEVICE_WACOM(0x319) },
        { USB_DEVICE_WACOM(0x323) },
        { USB_DEVICE_WACOM(0x325) },
        { USB_DEVICE_WACOM(0x326) },
        { USB_DEVICE_WACOM(0x32A) },
        { USB_DEVICE_WACOM(0x32B) },
        { USB_DEVICE_WACOM(0x32C) },
        { USB_DEVICE_WACOM(0x32F) },
        { USB_DEVICE_WACOM(0x331) },
        { USB_DEVICE_WACOM(0x333) },
        { USB_DEVICE_WACOM(0x335) },
        { USB_DEVICE_WACOM(0x336) },
        { USB_DEVICE_WACOM(0x33B) },
        { USB_DEVICE_WACOM(0x33C) },
        { USB_DEVICE_WACOM(0x33D) },
        { USB_DEVICE_WACOM(0x33E) },
        { USB_DEVICE_WACOM(0x343) },
        { BT_DEVICE_WACOM(0x360) },
        { BT_DEVICE_WACOM(0x361) },
        { BT_DEVICE_WACOM(0x377) },
        { BT_DEVICE_WACOM(0x379) },
        { USB_DEVICE_WACOM(0x37A) },
        { USB_DEVICE_WACOM(0x37B) },
        { BT_DEVICE_WACOM(0x393) },
        { BT_DEVICE_WACOM(0x3c6) },
        { BT_DEVICE_WACOM(0x3c8) },
        { BT_DEVICE_WACOM(0x3dd) },
        { USB_DEVICE_WACOM(0x4001) },
        { USB_DEVICE_WACOM(0x4004) },
        { USB_DEVICE_WACOM(0x5000) },
        { USB_DEVICE_WACOM(0x5002) },
        { USB_DEVICE_LENOVO(0x6004) },

        { USB_DEVICE_WACOM(HID_ANY_ID) },
        { I2C_DEVICE_WACOM(HID_ANY_ID) },
        { PCI_DEVICE_WACOM(HID_ANY_ID) },
        { BT_DEVICE_WACOM(HID_ANY_ID) },
        { }
};
MODULE_DEVICE_TABLE(hid, wacom_ids);