v4.19.13 snapshot.
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
new file mode 100644
index 0000000..2faf542
--- /dev/null
+++ b/drivers/hid/hid-multitouch.c
@@ -0,0 +1,2125 @@
+/*
+ * HID driver for multitouch panels
+ *
+ * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
+ * Copyright (c) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com>
+ * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
+ * Copyright (c) 2012-2013 Red Hat, Inc
+ *
+ * This code is partly based on hid-egalax.c:
+ *
+ * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
+ * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
+ * Copyright (c) 2010 Canonical, Ltd.
+ *
+ * This code is partly based on hid-3m-pct.c:
+ *
+ * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
+ * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
+ * Copyright (c) 2010 Canonical, Ltd.
+ *
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+/*
+ * This driver is regularly tested thanks to the test suite in hid-tools[1].
+ * Please run these regression tests before patching this module so that
+ * your patch won't break existing known devices.
+ *
+ * [1] https://gitlab.freedesktop.org/libevdev/hid-tools
+ */
+
+#include <linux/device.h>
+#include <linux/hid.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/input/mt.h>
+#include <linux/jiffies.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+
+
+MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
+MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
+MODULE_DESCRIPTION("HID multitouch panels");
+MODULE_LICENSE("GPL");
+
+#include "hid-ids.h"
+
+/* quirks to control the device */
+#define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0)
+#define MT_QUIRK_SLOT_IS_CONTACTID BIT(1)
+#define MT_QUIRK_CYPRESS BIT(2)
+#define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3)
+#define MT_QUIRK_ALWAYS_VALID BIT(4)
+#define MT_QUIRK_VALID_IS_INRANGE BIT(5)
+#define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6)
+#define MT_QUIRK_CONFIDENCE BIT(7)
+#define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8)
+#define MT_QUIRK_NO_AREA BIT(9)
+#define MT_QUIRK_IGNORE_DUPLICATES BIT(10)
+#define MT_QUIRK_HOVERING BIT(11)
+#define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12)
+#define MT_QUIRK_FORCE_GET_FEATURE BIT(13)
+#define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14)
+#define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15)
+#define MT_QUIRK_STICKY_FINGERS BIT(16)
+#define MT_QUIRK_ASUS_CUSTOM_UP BIT(17)
+#define MT_QUIRK_WIN8_PTP_BUTTONS BIT(18)
+
+#define MT_INPUTMODE_TOUCHSCREEN 0x02
+#define MT_INPUTMODE_TOUCHPAD 0x03
+
+#define MT_BUTTONTYPE_CLICKPAD 0
+
+enum latency_mode {
+ HID_LATENCY_NORMAL = 0,
+ HID_LATENCY_HIGH = 1,
+};
+
+#define MT_IO_FLAGS_RUNNING 0
+#define MT_IO_FLAGS_ACTIVE_SLOTS 1
+#define MT_IO_FLAGS_PENDING_SLOTS 2
+
+static const bool mtrue = true; /* default for true */
+static const bool mfalse; /* default for false */
+static const __s32 mzero; /* default for 0 */
+
+#define DEFAULT_TRUE ((void *)&mtrue)
+#define DEFAULT_FALSE ((void *)&mfalse)
+#define DEFAULT_ZERO ((void *)&mzero)
+
+struct mt_usages {
+ struct list_head list;
+ __s32 *x, *y, *cx, *cy, *p, *w, *h, *a;
+ __s32 *contactid; /* the device ContactID assigned to this slot */
+ bool *tip_state; /* is the touch valid? */
+ bool *inrange_state; /* is the finger in proximity of the sensor? */
+ bool *confidence_state; /* is the touch made by a finger? */
+};
+
+struct mt_application {
+ struct list_head list;
+ unsigned int application;
+ struct list_head mt_usages; /* mt usages list */
+
+ __s32 quirks;
+
+ __s32 *scantime; /* scantime reported */
+ __s32 scantime_logical_max; /* max value for raw scantime */
+
+ __s32 *raw_cc; /* contact count in the report */
+ int left_button_state; /* left button state */
+ unsigned int mt_flags; /* flags to pass to input-mt */
+
+ unsigned long *pending_palm_slots; /* slots where we reported palm
+ * and need to release */
+
+ __u8 num_received; /* how many contacts we received */
+ __u8 num_expected; /* expected last contact index */
+ __u8 buttons_count; /* number of physical buttons per touchpad */
+ __u8 touches_by_report; /* how many touches are present in one report:
+ * 1 means we should use a serial protocol
+ * > 1 means hybrid (multitouch) protocol
+ */
+
+ __s32 dev_time; /* the scan time provided by the device */
+ unsigned long jiffies; /* the frame's jiffies */
+ int timestamp; /* the timestamp to be sent */
+ int prev_scantime; /* scantime reported previously */
+
+ bool have_contact_count;
+};
+
+struct mt_class {
+ __s32 name; /* MT_CLS */
+ __s32 quirks;
+ __s32 sn_move; /* Signal/noise ratio for move events */
+ __s32 sn_width; /* Signal/noise ratio for width events */
+ __s32 sn_height; /* Signal/noise ratio for height events */
+ __s32 sn_pressure; /* Signal/noise ratio for pressure events */
+ __u8 maxcontacts;
+ bool is_indirect; /* true for touchpads */
+ bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */
+};
+
+struct mt_report_data {
+ struct list_head list;
+ struct hid_report *report;
+ struct mt_application *application;
+ bool is_mt_collection;
+};
+
+struct mt_device {
+ struct mt_class mtclass; /* our mt device class */
+ struct timer_list release_timer; /* to release sticky fingers */
+ struct hid_device *hdev; /* hid_device we're attached to */
+ unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */
+ __u8 inputmode_value; /* InputMode HID feature value */
+ __u8 maxcontacts;
+ bool is_buttonpad; /* is this device a button pad? */
+ bool serial_maybe; /* need to check for serial protocol */
+
+ struct list_head applications;
+ struct list_head reports;
+};
+
+static void mt_post_parse_default_settings(struct mt_device *td,
+ struct mt_application *app);
+static void mt_post_parse(struct mt_device *td, struct mt_application *app);
+
+/* classes of device behavior */
+#define MT_CLS_DEFAULT 0x0001
+
+#define MT_CLS_SERIAL 0x0002
+#define MT_CLS_CONFIDENCE 0x0003
+#define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
+#define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
+#define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
+#define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
+/* reserved 0x0008 */
+#define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
+#define MT_CLS_NSMU 0x000a
+/* reserved 0x0010 */
+/* reserved 0x0011 */
+#define MT_CLS_WIN_8 0x0012
+#define MT_CLS_EXPORT_ALL_INPUTS 0x0013
+#define MT_CLS_WIN_8_DUAL 0x0014
+
+/* vendor specific classes */
+#define MT_CLS_3M 0x0101
+/* reserved 0x0102 */
+#define MT_CLS_EGALAX 0x0103
+#define MT_CLS_EGALAX_SERIAL 0x0104
+#define MT_CLS_TOPSEED 0x0105
+#define MT_CLS_PANASONIC 0x0106
+#define MT_CLS_FLATFROG 0x0107
+#define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108
+#define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109
+#define MT_CLS_LG 0x010a
+#define MT_CLS_ASUS 0x010b
+#define MT_CLS_VTL 0x0110
+#define MT_CLS_GOOGLE 0x0111
+#define MT_CLS_RAZER_BLADE_STEALTH 0x0112
+
+#define MT_DEFAULT_MAXCONTACT 10
+#define MT_MAX_MAXCONTACT 250
+
+/*
+ * Resync device and local timestamps after that many microseconds without
+ * receiving data.
+ */
+#define MAX_TIMESTAMP_INTERVAL 1000000
+
+#define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
+#define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
+
+/*
+ * these device-dependent functions determine what slot corresponds
+ * to a valid contact that was just read.
+ */
+
+static int cypress_compute_slot(struct mt_application *application,
+ struct mt_usages *slot)
+{
+ if (*slot->contactid != 0 || application->num_received == 0)
+ return *slot->contactid;
+ else
+ return -1;
+}
+
+static const struct mt_class mt_classes[] = {
+ { .name = MT_CLS_DEFAULT,
+ .quirks = MT_QUIRK_ALWAYS_VALID |
+ MT_QUIRK_CONTACT_CNT_ACCURATE },
+ { .name = MT_CLS_NSMU,
+ .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
+ { .name = MT_CLS_SERIAL,
+ .quirks = MT_QUIRK_ALWAYS_VALID},
+ { .name = MT_CLS_CONFIDENCE,
+ .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
+ { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
+ .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
+ MT_QUIRK_SLOT_IS_CONTACTID },
+ { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
+ .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
+ MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
+ { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
+ .quirks = MT_QUIRK_VALID_IS_INRANGE |
+ MT_QUIRK_SLOT_IS_CONTACTID,
+ .maxcontacts = 2 },
+ { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
+ .quirks = MT_QUIRK_VALID_IS_INRANGE |
+ MT_QUIRK_SLOT_IS_CONTACTNUMBER,
+ .maxcontacts = 2 },
+ { .name = MT_CLS_INRANGE_CONTACTNUMBER,
+ .quirks = MT_QUIRK_VALID_IS_INRANGE |
+ MT_QUIRK_SLOT_IS_CONTACTNUMBER },
+ { .name = MT_CLS_WIN_8,
+ .quirks = MT_QUIRK_ALWAYS_VALID |
+ MT_QUIRK_IGNORE_DUPLICATES |
+ MT_QUIRK_HOVERING |
+ MT_QUIRK_CONTACT_CNT_ACCURATE |
+ MT_QUIRK_STICKY_FINGERS |
+ MT_QUIRK_WIN8_PTP_BUTTONS },
+ { .name = MT_CLS_EXPORT_ALL_INPUTS,
+ .quirks = MT_QUIRK_ALWAYS_VALID |
+ MT_QUIRK_CONTACT_CNT_ACCURATE,
+ .export_all_inputs = true },
+ { .name = MT_CLS_WIN_8_DUAL,
+ .quirks = MT_QUIRK_ALWAYS_VALID |
+ MT_QUIRK_IGNORE_DUPLICATES |
+ MT_QUIRK_HOVERING |
+ MT_QUIRK_CONTACT_CNT_ACCURATE |
+ MT_QUIRK_WIN8_PTP_BUTTONS,
+ .export_all_inputs = true },
+
+ /*
+ * vendor specific classes
+ */
+ { .name = MT_CLS_3M,
+ .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
+ MT_QUIRK_SLOT_IS_CONTACTID |
+ MT_QUIRK_TOUCH_SIZE_SCALING,
+ .sn_move = 2048,
+ .sn_width = 128,
+ .sn_height = 128,
+ .maxcontacts = 60,
+ },
+ { .name = MT_CLS_EGALAX,
+ .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
+ MT_QUIRK_VALID_IS_INRANGE,
+ .sn_move = 4096,
+ .sn_pressure = 32,
+ },
+ { .name = MT_CLS_EGALAX_SERIAL,
+ .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
+ MT_QUIRK_ALWAYS_VALID,
+ .sn_move = 4096,
+ .sn_pressure = 32,
+ },
+ { .name = MT_CLS_TOPSEED,
+ .quirks = MT_QUIRK_ALWAYS_VALID,
+ .is_indirect = true,
+ .maxcontacts = 2,
+ },
+ { .name = MT_CLS_PANASONIC,
+ .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
+ .maxcontacts = 4 },
+ { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
+ .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
+ MT_QUIRK_VALID_IS_INRANGE |
+ MT_QUIRK_SLOT_IS_CONTACTID,
+ .maxcontacts = 2
+ },
+ { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
+ .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
+ MT_QUIRK_SLOT_IS_CONTACTID
+ },
+
+ { .name = MT_CLS_FLATFROG,
+ .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
+ MT_QUIRK_NO_AREA,
+ .sn_move = 2048,
+ .maxcontacts = 40,
+ },
+ { .name = MT_CLS_LG,
+ .quirks = MT_QUIRK_ALWAYS_VALID |
+ MT_QUIRK_FIX_CONST_CONTACT_ID |
+ MT_QUIRK_IGNORE_DUPLICATES |
+ MT_QUIRK_HOVERING |
+ MT_QUIRK_CONTACT_CNT_ACCURATE },
+ { .name = MT_CLS_ASUS,
+ .quirks = MT_QUIRK_ALWAYS_VALID |
+ MT_QUIRK_CONTACT_CNT_ACCURATE |
+ MT_QUIRK_ASUS_CUSTOM_UP },
+ { .name = MT_CLS_VTL,
+ .quirks = MT_QUIRK_ALWAYS_VALID |
+ MT_QUIRK_CONTACT_CNT_ACCURATE |
+ MT_QUIRK_FORCE_GET_FEATURE,
+ },
+ { .name = MT_CLS_GOOGLE,
+ .quirks = MT_QUIRK_ALWAYS_VALID |
+ MT_QUIRK_CONTACT_CNT_ACCURATE |
+ MT_QUIRK_SLOT_IS_CONTACTID |
+ MT_QUIRK_HOVERING
+ },
+ { .name = MT_CLS_RAZER_BLADE_STEALTH,
+ .quirks = MT_QUIRK_ALWAYS_VALID |
+ MT_QUIRK_IGNORE_DUPLICATES |
+ MT_QUIRK_HOVERING |
+ MT_QUIRK_CONTACT_CNT_ACCURATE |
+ MT_QUIRK_WIN8_PTP_BUTTONS,
+ },
+ { }
+};
+
+static ssize_t mt_show_quirks(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct hid_device *hdev = to_hid_device(dev);
+ struct mt_device *td = hid_get_drvdata(hdev);
+
+ return sprintf(buf, "%u\n", td->mtclass.quirks);
+}
+
+static ssize_t mt_set_quirks(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct hid_device *hdev = to_hid_device(dev);
+ struct mt_device *td = hid_get_drvdata(hdev);
+ struct mt_application *application;
+
+ unsigned long val;
+
+ if (kstrtoul(buf, 0, &val))
+ return -EINVAL;
+
+ td->mtclass.quirks = val;
+
+ list_for_each_entry(application, &td->applications, list) {
+ application->quirks = val;
+ if (!application->have_contact_count)
+ application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
+ }
+
+ return count;
+}
+
+static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
+
+static struct attribute *sysfs_attrs[] = {
+ &dev_attr_quirks.attr,
+ NULL
+};
+
+static const struct attribute_group mt_attribute_group = {
+ .attrs = sysfs_attrs
+};
+
+static void mt_get_feature(struct hid_device *hdev, struct hid_report *report)
+{
+ int ret;
+ u32 size = hid_report_len(report);
+ u8 *buf;
+
+ /*
+ * Do not fetch the feature report if the device has been explicitly
+ * marked as non-capable.
+ */
+ if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS)
+ return;
+
+ buf = hid_alloc_report_buf(report, GFP_KERNEL);
+ if (!buf)
+ return;
+
+ ret = hid_hw_raw_request(hdev, report->id, buf, size,
+ HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
+ if (ret < 0) {
+ dev_warn(&hdev->dev, "failed to fetch feature %d\n",
+ report->id);
+ } else {
+ ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf,
+ size, 0);
+ if (ret)
+ dev_warn(&hdev->dev, "failed to report feature\n");
+ }
+
+ kfree(buf);
+}
+
+static void mt_feature_mapping(struct hid_device *hdev,
+ struct hid_field *field, struct hid_usage *usage)
+{
+ struct mt_device *td = hid_get_drvdata(hdev);
+
+ switch (usage->hid) {
+ case HID_DG_CONTACTMAX:
+ mt_get_feature(hdev, field->report);
+
+ td->maxcontacts = field->value[0];
+ if (!td->maxcontacts &&
+ field->logical_maximum <= MT_MAX_MAXCONTACT)
+ td->maxcontacts = field->logical_maximum;
+ if (td->mtclass.maxcontacts)
+ /* check if the maxcontacts is given by the class */
+ td->maxcontacts = td->mtclass.maxcontacts;
+
+ break;
+ case HID_DG_BUTTONTYPE:
+ if (usage->usage_index >= field->report_count) {
+ dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n");
+ break;
+ }
+
+ mt_get_feature(hdev, field->report);
+ if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD)
+ td->is_buttonpad = true;
+
+ break;
+ case 0xff0000c5:
+ /* Retrieve the Win8 blob once to enable some devices */
+ if (usage->usage_index == 0)
+ mt_get_feature(hdev, field->report);
+ break;
+ }
+}
+
+static void set_abs(struct input_dev *input, unsigned int code,
+ struct hid_field *field, int snratio)
+{
+ int fmin = field->logical_minimum;
+ int fmax = field->logical_maximum;
+ int fuzz = snratio ? (fmax - fmin) / snratio : 0;
+ input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
+ input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
+}
+
+static struct mt_usages *mt_allocate_usage(struct hid_device *hdev,
+ struct mt_application *application)
+{
+ struct mt_usages *usage;
+
+ usage = devm_kzalloc(&hdev->dev, sizeof(*usage), GFP_KERNEL);
+ if (!usage)
+ return NULL;
+
+ /* set some defaults so we do not need to check for null pointers */
+ usage->x = DEFAULT_ZERO;
+ usage->y = DEFAULT_ZERO;
+ usage->cx = DEFAULT_ZERO;
+ usage->cy = DEFAULT_ZERO;
+ usage->p = DEFAULT_ZERO;
+ usage->w = DEFAULT_ZERO;
+ usage->h = DEFAULT_ZERO;
+ usage->a = DEFAULT_ZERO;
+ usage->contactid = DEFAULT_ZERO;
+ usage->tip_state = DEFAULT_FALSE;
+ usage->inrange_state = DEFAULT_FALSE;
+ usage->confidence_state = DEFAULT_TRUE;
+
+ list_add_tail(&usage->list, &application->mt_usages);
+
+ return usage;
+}
+
+static struct mt_application *mt_allocate_application(struct mt_device *td,
+ unsigned int application)
+{
+ struct mt_application *mt_application;
+
+ mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application),
+ GFP_KERNEL);
+ if (!mt_application)
+ return NULL;
+
+ mt_application->application = application;
+ INIT_LIST_HEAD(&mt_application->mt_usages);
+
+ if (application == HID_DG_TOUCHSCREEN)
+ mt_application->mt_flags |= INPUT_MT_DIRECT;
+
+ /*
+ * Model touchscreens providing buttons as touchpads.
+ */
+ if (application == HID_DG_TOUCHPAD) {
+ mt_application->mt_flags |= INPUT_MT_POINTER;
+ td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
+ }
+
+ mt_application->scantime = DEFAULT_ZERO;
+ mt_application->raw_cc = DEFAULT_ZERO;
+ mt_application->quirks = td->mtclass.quirks;
+
+ list_add_tail(&mt_application->list, &td->applications);
+
+ return mt_application;
+}
+
+static struct mt_application *mt_find_application(struct mt_device *td,
+ unsigned int application)
+{
+ struct mt_application *tmp, *mt_application = NULL;
+
+ list_for_each_entry(tmp, &td->applications, list) {
+ if (application == tmp->application) {
+ mt_application = tmp;
+ break;
+ }
+ }
+
+ if (!mt_application)
+ mt_application = mt_allocate_application(td, application);
+
+ return mt_application;
+}
+
+static struct mt_report_data *mt_allocate_report_data(struct mt_device *td,
+ struct hid_report *report)
+{
+ struct mt_report_data *rdata;
+ struct hid_field *field;
+ int r, n;
+
+ rdata = devm_kzalloc(&td->hdev->dev, sizeof(*rdata), GFP_KERNEL);
+ if (!rdata)
+ return NULL;
+
+ rdata->report = report;
+ rdata->application = mt_find_application(td, report->application);
+
+ if (!rdata->application) {
+ devm_kfree(&td->hdev->dev, rdata);
+ return NULL;
+ }
+
+ for (r = 0; r < report->maxfield; r++) {
+ field = report->field[r];
+
+ if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
+ continue;
+
+ for (n = 0; n < field->report_count; n++) {
+ if (field->usage[n].hid == HID_DG_CONTACTID)
+ rdata->is_mt_collection = true;
+ }
+ }
+
+ list_add_tail(&rdata->list, &td->reports);
+
+ return rdata;
+}
+
+static struct mt_report_data *mt_find_report_data(struct mt_device *td,
+ struct hid_report *report)
+{
+ struct mt_report_data *tmp, *rdata = NULL;
+
+ list_for_each_entry(tmp, &td->reports, list) {
+ if (report == tmp->report) {
+ rdata = tmp;
+ break;
+ }
+ }
+
+ if (!rdata)
+ rdata = mt_allocate_report_data(td, report);
+
+ return rdata;
+}
+
+static void mt_store_field(struct hid_device *hdev,
+ struct mt_application *application,
+ __s32 *value,
+ size_t offset)
+{
+ struct mt_usages *usage;
+ __s32 **target;
+
+ if (list_empty(&application->mt_usages))
+ usage = mt_allocate_usage(hdev, application);
+ else
+ usage = list_last_entry(&application->mt_usages,
+ struct mt_usages,
+ list);
+
+ if (!usage)
+ return;
+
+ target = (__s32 **)((char *)usage + offset);
+
+ /* the value has already been filled, create a new slot */
+ if (*target != DEFAULT_TRUE &&
+ *target != DEFAULT_FALSE &&
+ *target != DEFAULT_ZERO) {
+ usage = mt_allocate_usage(hdev, application);
+ if (!usage)
+ return;
+
+ target = (__s32 **)((char *)usage + offset);
+ }
+
+ *target = value;
+}
+
+#define MT_STORE_FIELD(__name) \
+ mt_store_field(hdev, app, \
+ &field->value[usage->usage_index], \
+ offsetof(struct mt_usages, __name))
+
+static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
+ struct hid_field *field, struct hid_usage *usage,
+ unsigned long **bit, int *max, struct mt_application *app)
+{
+ struct mt_device *td = hid_get_drvdata(hdev);
+ struct mt_class *cls = &td->mtclass;
+ int code;
+ struct hid_usage *prev_usage = NULL;
+
+ /*
+ * Model touchscreens providing buttons as touchpads.
+ */
+ if (field->application == HID_DG_TOUCHSCREEN &&
+ (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
+ app->mt_flags |= INPUT_MT_POINTER;
+ td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
+ }
+
+ /* count the buttons on touchpads */
+ if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
+ app->buttons_count++;
+
+ if (usage->usage_index)
+ prev_usage = &field->usage[usage->usage_index - 1];
+
+ switch (usage->hid & HID_USAGE_PAGE) {
+
+ case HID_UP_GENDESK:
+ switch (usage->hid) {
+ case HID_GD_X:
+ if (prev_usage && (prev_usage->hid == usage->hid)) {
+ code = ABS_MT_TOOL_X;
+ MT_STORE_FIELD(cx);
+ } else {
+ code = ABS_MT_POSITION_X;
+ MT_STORE_FIELD(x);
+ }
+
+ set_abs(hi->input, code, field, cls->sn_move);
+
+ /*
+ * A system multi-axis that exports X and Y has a high
+ * chance of being used directly on a surface
+ */
+ if (field->application == HID_GD_SYSTEM_MULTIAXIS) {
+ __set_bit(INPUT_PROP_DIRECT,
+ hi->input->propbit);
+ input_set_abs_params(hi->input,
+ ABS_MT_TOOL_TYPE,
+ MT_TOOL_DIAL,
+ MT_TOOL_DIAL, 0, 0);
+ }
+
+ return 1;
+ case HID_GD_Y:
+ if (prev_usage && (prev_usage->hid == usage->hid)) {
+ code = ABS_MT_TOOL_Y;
+ MT_STORE_FIELD(cy);
+ } else {
+ code = ABS_MT_POSITION_Y;
+ MT_STORE_FIELD(y);
+ }
+
+ set_abs(hi->input, code, field, cls->sn_move);
+
+ return 1;
+ }
+ return 0;
+
+ case HID_UP_DIGITIZER:
+ switch (usage->hid) {
+ case HID_DG_INRANGE:
+ if (app->quirks & MT_QUIRK_HOVERING) {
+ input_set_abs_params(hi->input,
+ ABS_MT_DISTANCE, 0, 1, 0, 0);
+ }
+ MT_STORE_FIELD(inrange_state);
+ return 1;
+ case HID_DG_CONFIDENCE:
+ if ((cls->name == MT_CLS_WIN_8 ||
+ cls->name == MT_CLS_WIN_8_DUAL) &&
+ (field->application == HID_DG_TOUCHPAD ||
+ field->application == HID_DG_TOUCHSCREEN))
+ app->quirks |= MT_QUIRK_CONFIDENCE;
+
+ if (app->quirks & MT_QUIRK_CONFIDENCE)
+ input_set_abs_params(hi->input,
+ ABS_MT_TOOL_TYPE,
+ MT_TOOL_FINGER,
+ MT_TOOL_PALM, 0, 0);
+
+ MT_STORE_FIELD(confidence_state);
+ return 1;
+ case HID_DG_TIPSWITCH:
+ if (field->application != HID_GD_SYSTEM_MULTIAXIS)
+ input_set_capability(hi->input,
+ EV_KEY, BTN_TOUCH);
+ MT_STORE_FIELD(tip_state);
+ return 1;
+ case HID_DG_CONTACTID:
+ MT_STORE_FIELD(contactid);
+ app->touches_by_report++;
+ return 1;
+ case HID_DG_WIDTH:
+ if (!(app->quirks & MT_QUIRK_NO_AREA))
+ set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
+ cls->sn_width);
+ MT_STORE_FIELD(w);
+ return 1;
+ case HID_DG_HEIGHT:
+ if (!(app->quirks & MT_QUIRK_NO_AREA)) {
+ set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
+ cls->sn_height);
+
+ /*
+ * Only set ABS_MT_ORIENTATION if it is not
+ * already set by the HID_DG_AZIMUTH usage.
+ */
+ if (!test_bit(ABS_MT_ORIENTATION,
+ hi->input->absbit))
+ input_set_abs_params(hi->input,
+ ABS_MT_ORIENTATION, 0, 1, 0, 0);
+ }
+ MT_STORE_FIELD(h);
+ return 1;
+ case HID_DG_TIPPRESSURE:
+ set_abs(hi->input, ABS_MT_PRESSURE, field,
+ cls->sn_pressure);
+ MT_STORE_FIELD(p);
+ return 1;
+ case HID_DG_SCANTIME:
+ input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP);
+ app->scantime = &field->value[usage->usage_index];
+ app->scantime_logical_max = field->logical_maximum;
+ return 1;
+ case HID_DG_CONTACTCOUNT:
+ app->have_contact_count = true;
+ app->raw_cc = &field->value[usage->usage_index];
+ return 1;
+ case HID_DG_AZIMUTH:
+ /*
+ * Azimuth has the range of [0, MAX) representing a full
+ * revolution. Set ABS_MT_ORIENTATION to a quarter of
+ * MAX according the definition of ABS_MT_ORIENTATION
+ */
+ input_set_abs_params(hi->input, ABS_MT_ORIENTATION,
+ -field->logical_maximum / 4,
+ field->logical_maximum / 4,
+ cls->sn_move ?
+ field->logical_maximum / cls->sn_move : 0, 0);
+ MT_STORE_FIELD(a);
+ return 1;
+ case HID_DG_CONTACTMAX:
+ /* contact max are global to the report */
+ return -1;
+ case HID_DG_TOUCH:
+ /* Legacy devices use TIPSWITCH and not TOUCH.
+ * Let's just ignore this field. */
+ return -1;
+ }
+ /* let hid-input decide for the others */
+ return 0;
+
+ case HID_UP_BUTTON:
+ code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
+ /*
+ * MS PTP spec says that external buttons left and right have
+ * usages 2 and 3.
+ */
+ if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) &&
+ field->application == HID_DG_TOUCHPAD &&
+ (usage->hid & HID_USAGE) > 1)
+ code--;
+
+ if (field->application == HID_GD_SYSTEM_MULTIAXIS)
+ code = BTN_0 + ((usage->hid - 1) & HID_USAGE);
+
+ hid_map_usage(hi, usage, bit, max, EV_KEY, code);
+ input_set_capability(hi->input, EV_KEY, code);
+ return 1;
+
+ case 0xff000000:
+ /* we do not want to map these: no input-oriented meaning */
+ return -1;
+ }
+
+ return 0;
+}
+
+static int mt_compute_slot(struct mt_device *td, struct mt_application *app,
+ struct mt_usages *slot,
+ struct input_dev *input)
+{
+ __s32 quirks = app->quirks;
+
+ if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
+ return *slot->contactid;
+
+ if (quirks & MT_QUIRK_CYPRESS)
+ return cypress_compute_slot(app, slot);
+
+ if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
+ return app->num_received;
+
+ if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
+ return *slot->contactid - 1;
+
+ return input_mt_get_slot_by_key(input, *slot->contactid);
+}
+
+static void mt_release_pending_palms(struct mt_device *td,
+ struct mt_application *app,
+ struct input_dev *input)
+{
+ int slotnum;
+ bool need_sync = false;
+
+ for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) {
+ clear_bit(slotnum, app->pending_palm_slots);
+
+ input_mt_slot(input, slotnum);
+ input_mt_report_slot_state(input, MT_TOOL_PALM, false);
+
+ need_sync = true;
+ }
+
+ if (need_sync) {
+ input_mt_sync_frame(input);
+ input_sync(input);
+ }
+}
+
+/*
+ * this function is called when a whole packet has been received and processed,
+ * so that it can decide what to send to the input layer.
+ */
+static void mt_sync_frame(struct mt_device *td, struct mt_application *app,
+ struct input_dev *input)
+{
+ if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS)
+ input_event(input, EV_KEY, BTN_LEFT, app->left_button_state);
+
+ input_mt_sync_frame(input);
+ input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp);
+ input_sync(input);
+
+ mt_release_pending_palms(td, app, input);
+
+ app->num_received = 0;
+ app->left_button_state = 0;
+
+ if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags))
+ set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
+ else
+ clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
+ clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
+}
+
+static int mt_compute_timestamp(struct mt_application *app, __s32 value)
+{
+ long delta = value - app->prev_scantime;
+ unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies);
+
+ app->jiffies = jiffies;
+
+ if (delta < 0)
+ delta += app->scantime_logical_max;
+
+ /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */
+ delta *= 100;
+
+ if (jdelta > MAX_TIMESTAMP_INTERVAL)
+ /* No data received for a while, resync the timestamp. */
+ return 0;
+ else
+ return app->timestamp + delta;
+}
+
+static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
+ struct hid_usage *usage, __s32 value)
+{
+ /* we will handle the hidinput part later, now remains hiddev */
+ if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
+ hid->hiddev_hid_event(hid, field, usage, value);
+
+ return 1;
+}
+
+static int mt_process_slot(struct mt_device *td, struct input_dev *input,
+ struct mt_application *app,
+ struct mt_usages *slot)
+{
+ struct input_mt *mt = input->mt;
+ __s32 quirks = app->quirks;
+ bool valid = true;
+ bool confidence_state = true;
+ bool inrange_state = false;
+ int active;
+ int slotnum;
+ int tool = MT_TOOL_FINGER;
+
+ if (!slot)
+ return -EINVAL;
+
+ if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
+ app->num_received >= app->num_expected)
+ return -EAGAIN;
+
+ if (!(quirks & MT_QUIRK_ALWAYS_VALID)) {
+ if (quirks & MT_QUIRK_VALID_IS_INRANGE)
+ valid = *slot->inrange_state;
+ if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
+ valid = *slot->tip_state;
+ if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
+ valid = *slot->confidence_state;
+
+ if (!valid)
+ return 0;
+ }
+
+ slotnum = mt_compute_slot(td, app, slot, input);
+ if (slotnum < 0 || slotnum >= td->maxcontacts)
+ return 0;
+
+ if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
+ struct input_mt_slot *i_slot = &mt->slots[slotnum];
+
+ if (input_mt_is_active(i_slot) &&
+ input_mt_is_used(mt, i_slot))
+ return -EAGAIN;
+ }
+
+ if (quirks & MT_QUIRK_CONFIDENCE)
+ confidence_state = *slot->confidence_state;
+
+ if (quirks & MT_QUIRK_HOVERING)
+ inrange_state = *slot->inrange_state;
+
+ active = *slot->tip_state || inrange_state;
+
+ if (app->application == HID_GD_SYSTEM_MULTIAXIS)
+ tool = MT_TOOL_DIAL;
+ else if (unlikely(!confidence_state)) {
+ tool = MT_TOOL_PALM;
+ if (!active &&
+ input_mt_is_active(&mt->slots[slotnum])) {
+ /*
+ * The non-confidence was reported for
+ * previously valid contact that is also no
+ * longer valid. We can't simply report
+ * lift-off as userspace will not be aware
+ * of non-confidence, so we need to split
+ * it into 2 events: active MT_TOOL_PALM
+ * and a separate liftoff.
+ */
+ active = true;
+ set_bit(slotnum, app->pending_palm_slots);
+ }
+ }
+
+ input_mt_slot(input, slotnum);
+ input_mt_report_slot_state(input, tool, active);
+ if (active) {
+ /* this finger is in proximity of the sensor */
+ int wide = (*slot->w > *slot->h);
+ int major = max(*slot->w, *slot->h);
+ int minor = min(*slot->w, *slot->h);
+ int orientation = wide;
+ int max_azimuth;
+ int azimuth;
+
+ if (slot->a != DEFAULT_ZERO) {
+ /*
+ * Azimuth is counter-clockwise and ranges from [0, MAX)
+ * (a full revolution). Convert it to clockwise ranging
+ * [-MAX/2, MAX/2].
+ *
+ * Note that ABS_MT_ORIENTATION require us to report
+ * the limit of [-MAX/4, MAX/4], but the value can go
+ * out of range to [-MAX/2, MAX/2] to report an upside
+ * down ellipsis.
+ */
+ azimuth = *slot->a;
+ max_azimuth = input_abs_get_max(input,
+ ABS_MT_ORIENTATION);
+ if (azimuth > max_azimuth * 2)
+ azimuth -= max_azimuth * 4;
+ orientation = -azimuth;
+ }
+
+ if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) {
+ /*
+ * divided by two to match visual scale of touch
+ * for devices with this quirk
+ */
+ major = major >> 1;
+ minor = minor >> 1;
+ }
+
+ input_event(input, EV_ABS, ABS_MT_POSITION_X, *slot->x);
+ input_event(input, EV_ABS, ABS_MT_POSITION_Y, *slot->y);
+ input_event(input, EV_ABS, ABS_MT_TOOL_X, *slot->cx);
+ input_event(input, EV_ABS, ABS_MT_TOOL_Y, *slot->cy);
+ input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state);
+ input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation);
+ input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p);
+ input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
+ input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
+
+ set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
+ }
+
+ return 0;
+}
+
+static void mt_process_mt_event(struct hid_device *hid,
+ struct mt_application *app,
+ struct hid_field *field,
+ struct hid_usage *usage,
+ __s32 value,
+ bool first_packet)
+{
+ __s32 quirks = app->quirks;
+ struct input_dev *input = field->hidinput->input;
+
+ if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT))
+ return;
+
+ if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) {
+
+ /*
+ * For Win8 PTP touchpads we should only look at
+ * non finger/touch events in the first_packet of a
+ * (possible) multi-packet frame.
+ */
+ if (!first_packet)
+ return;
+
+ /*
+ * For Win8 PTP touchpads we map both the clickpad click
+ * and any "external" left buttons to BTN_LEFT if a
+ * device claims to have both we need to report 1 for
+ * BTN_LEFT if either is pressed, so we or all values
+ * together and report the result in mt_sync_frame().
+ */
+ if (usage->type == EV_KEY && usage->code == BTN_LEFT) {
+ app->left_button_state |= value;
+ return;
+ }
+ }
+
+ input_event(input, usage->type, usage->code, value);
+}
+
+static void mt_touch_report(struct hid_device *hid,
+ struct mt_report_data *rdata)
+{
+ struct mt_device *td = hid_get_drvdata(hid);
+ struct hid_report *report = rdata->report;
+ struct mt_application *app = rdata->application;
+ struct hid_field *field;
+ struct input_dev *input;
+ struct mt_usages *slot;
+ bool first_packet;
+ unsigned count;
+ int r, n;
+ int scantime = 0;
+ int contact_count = -1;
+
+ /* sticky fingers release in progress, abort */
+ if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
+ return;
+
+ scantime = *app->scantime;
+ app->timestamp = mt_compute_timestamp(app, scantime);
+ if (app->raw_cc != DEFAULT_ZERO)
+ contact_count = *app->raw_cc;
+
+ /*
+ * Includes multi-packet support where subsequent
+ * packets are sent with zero contactcount.
+ */
+ if (contact_count >= 0) {
+ /*
+ * For Win8 PTPs the first packet (td->num_received == 0) may
+ * have a contactcount of 0 if there only is a button event.
+ * We double check that this is not a continuation packet
+ * of a possible multi-packet frame be checking that the
+ * timestamp has changed.
+ */
+ if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) &&
+ app->num_received == 0 &&
+ app->prev_scantime != scantime)
+ app->num_expected = contact_count;
+ /* A non 0 contact count always indicates a first packet */
+ else if (contact_count)
+ app->num_expected = contact_count;
+ }
+ app->prev_scantime = scantime;
+
+ first_packet = app->num_received == 0;
+
+ input = report->field[0]->hidinput->input;
+
+ list_for_each_entry(slot, &app->mt_usages, list) {
+ if (!mt_process_slot(td, input, app, slot))
+ app->num_received++;
+ }
+
+ for (r = 0; r < report->maxfield; r++) {
+ field = report->field[r];
+ count = field->report_count;
+
+ if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
+ continue;
+
+ for (n = 0; n < count; n++)
+ mt_process_mt_event(hid, app, field,
+ &field->usage[n], field->value[n],
+ first_packet);
+ }
+
+ if (app->num_received >= app->num_expected)
+ mt_sync_frame(td, app, input);
+
+ /*
+ * Windows 8 specs says 2 things:
+ * - once a contact has been reported, it has to be reported in each
+ * subsequent report
+ * - the report rate when fingers are present has to be at least
+ * the refresh rate of the screen, 60 or 120 Hz
+ *
+ * I interprete this that the specification forces a report rate of
+ * at least 60 Hz for a touchscreen to be certified.
+ * Which means that if we do not get a report whithin 16 ms, either
+ * something wrong happens, either the touchscreen forgets to send
+ * a release. Taking a reasonable margin allows to remove issues
+ * with USB communication or the load of the machine.
+ *
+ * Given that Win 8 devices are forced to send a release, this will
+ * only affect laggish machines and the ones that have a firmware
+ * defect.
+ */
+ if (app->quirks & MT_QUIRK_STICKY_FINGERS) {
+ if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
+ mod_timer(&td->release_timer,
+ jiffies + msecs_to_jiffies(100));
+ else
+ del_timer(&td->release_timer);
+ }
+
+ clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
+}
+
+static int mt_touch_input_configured(struct hid_device *hdev,
+ struct hid_input *hi,
+ struct mt_application *app)
+{
+ struct mt_device *td = hid_get_drvdata(hdev);
+ struct mt_class *cls = &td->mtclass;
+ struct input_dev *input = hi->input;
+ int ret;
+
+ if (!td->maxcontacts)
+ td->maxcontacts = MT_DEFAULT_MAXCONTACT;
+
+ mt_post_parse(td, app);
+ if (td->serial_maybe)
+ mt_post_parse_default_settings(td, app);
+
+ if (cls->is_indirect)
+ app->mt_flags |= INPUT_MT_POINTER;
+
+ if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
+ app->mt_flags |= INPUT_MT_DROP_UNUSED;
+
+ /* check for clickpads */
+ if ((app->mt_flags & INPUT_MT_POINTER) &&
+ (app->buttons_count == 1))
+ td->is_buttonpad = true;
+
+ if (td->is_buttonpad)
+ __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
+
+ app->pending_palm_slots = devm_kcalloc(&hi->input->dev,
+ BITS_TO_LONGS(td->maxcontacts),
+ sizeof(long),
+ GFP_KERNEL);
+ if (!app->pending_palm_slots)
+ return -ENOMEM;
+
+ ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags);
+ if (ret)
+ return ret;
+
+ app->mt_flags = 0;
+ return 0;
+}
+
+#define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
+ max, EV_KEY, (c))
+static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
+ struct hid_field *field, struct hid_usage *usage,
+ unsigned long **bit, int *max)
+{
+ struct mt_device *td = hid_get_drvdata(hdev);
+ struct mt_application *application;
+ struct mt_report_data *rdata;
+
+ rdata = mt_find_report_data(td, field->report);
+ if (!rdata) {
+ hid_err(hdev, "failed to allocate data for report\n");
+ return 0;
+ }
+
+ application = rdata->application;
+
+ /*
+ * If mtclass.export_all_inputs is not set, only map fields from
+ * TouchScreen or TouchPad collections. We need to ignore fields
+ * that belong to other collections such as Mouse that might have
+ * the same GenericDesktop usages.
+ */
+ if (!td->mtclass.export_all_inputs &&
+ field->application != HID_DG_TOUCHSCREEN &&
+ field->application != HID_DG_PEN &&
+ field->application != HID_DG_TOUCHPAD &&
+ field->application != HID_GD_KEYBOARD &&
+ field->application != HID_GD_SYSTEM_CONTROL &&
+ field->application != HID_CP_CONSUMER_CONTROL &&
+ field->application != HID_GD_WIRELESS_RADIO_CTLS &&
+ field->application != HID_GD_SYSTEM_MULTIAXIS &&
+ !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
+ application->quirks & MT_QUIRK_ASUS_CUSTOM_UP))
+ return -1;
+
+ /*
+ * Some Asus keyboard+touchpad devices have the hotkeys defined in the
+ * touchpad report descriptor. We need to treat these as an array to
+ * map usages to input keys.
+ */
+ if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
+ application->quirks & MT_QUIRK_ASUS_CUSTOM_UP &&
+ (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) {
+ set_bit(EV_REP, hi->input->evbit);
+ if (field->flags & HID_MAIN_ITEM_VARIABLE)
+ field->flags &= ~HID_MAIN_ITEM_VARIABLE;
+ switch (usage->hid & HID_USAGE) {
+ case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break;
+ case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break;
+ case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break;
+ case 0x6b: mt_map_key_clear(KEY_F21); break;
+ case 0x6c: mt_map_key_clear(KEY_SLEEP); break;
+ default:
+ return -1;
+ }
+ return 1;
+ }
+
+ if (rdata->is_mt_collection)
+ return mt_touch_input_mapping(hdev, hi, field, usage, bit, max,
+ application);
+
+ /* let hid-core decide for the others */
+ return 0;
+}
+
+static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
+ struct hid_field *field, struct hid_usage *usage,
+ unsigned long **bit, int *max)
+{
+ struct mt_device *td = hid_get_drvdata(hdev);
+ struct mt_report_data *rdata;
+
+ rdata = mt_find_report_data(td, field->report);
+ if (rdata && rdata->is_mt_collection) {
+ /* We own these mappings, tell hid-input to ignore them */
+ return -1;
+ }
+
+ /* let hid-core decide for the others */
+ return 0;
+}
+
+static int mt_event(struct hid_device *hid, struct hid_field *field,
+ struct hid_usage *usage, __s32 value)
+{
+ struct mt_device *td = hid_get_drvdata(hid);
+ struct mt_report_data *rdata;
+
+ rdata = mt_find_report_data(td, field->report);
+ if (rdata && rdata->is_mt_collection)
+ return mt_touch_event(hid, field, usage, value);
+
+ return 0;
+}
+
+static void mt_report(struct hid_device *hid, struct hid_report *report)
+{
+ struct mt_device *td = hid_get_drvdata(hid);
+ struct hid_field *field = report->field[0];
+ struct mt_report_data *rdata;
+
+ if (!(hid->claimed & HID_CLAIMED_INPUT))
+ return;
+
+ rdata = mt_find_report_data(td, report);
+ if (rdata && rdata->is_mt_collection)
+ return mt_touch_report(hid, rdata);
+
+ if (field && field->hidinput && field->hidinput->input)
+ input_sync(field->hidinput->input);
+}
+
+static bool mt_need_to_apply_feature(struct hid_device *hdev,
+ struct hid_field *field,
+ struct hid_usage *usage,
+ enum latency_mode latency,
+ bool surface_switch,
+ bool button_switch,
+ bool *inputmode_found)
+{
+ struct mt_device *td = hid_get_drvdata(hdev);
+ struct mt_class *cls = &td->mtclass;
+ struct hid_report *report = field->report;
+ unsigned int index = usage->usage_index;
+ char *buf;
+ u32 report_len;
+ int max;
+
+ switch (usage->hid) {
+ case HID_DG_INPUTMODE:
+ /*
+ * Some elan panels wrongly declare 2 input mode features,
+ * and silently ignore when we set the value in the second
+ * field. Skip the second feature and hope for the best.
+ */
+ if (*inputmode_found)
+ return false;
+
+ if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
+ report_len = hid_report_len(report);
+ buf = hid_alloc_report_buf(report, GFP_KERNEL);
+ if (!buf) {
+ hid_err(hdev,
+ "failed to allocate buffer for report\n");
+ return false;
+ }
+ hid_hw_raw_request(hdev, report->id, buf, report_len,
+ HID_FEATURE_REPORT,
+ HID_REQ_GET_REPORT);
+ kfree(buf);
+ }
+
+ field->value[index] = td->inputmode_value;
+ *inputmode_found = true;
+ return true;
+
+ case HID_DG_CONTACTMAX:
+ if (cls->maxcontacts) {
+ max = min_t(int, field->logical_maximum,
+ cls->maxcontacts);
+ if (field->value[index] != max) {
+ field->value[index] = max;
+ return true;
+ }
+ }
+ break;
+
+ case HID_DG_LATENCYMODE:
+ field->value[index] = latency;
+ return true;
+
+ case HID_DG_SURFACESWITCH:
+ field->value[index] = surface_switch;
+ return true;
+
+ case HID_DG_BUTTONSWITCH:
+ field->value[index] = button_switch;
+ return true;
+ }
+
+ return false; /* no need to update the report */
+}
+
+static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency,
+ bool surface_switch, bool button_switch)
+{
+ struct hid_report_enum *rep_enum;
+ struct hid_report *rep;
+ struct hid_usage *usage;
+ int i, j;
+ bool update_report;
+ bool inputmode_found = false;
+
+ rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
+ list_for_each_entry(rep, &rep_enum->report_list, list) {
+ update_report = false;
+
+ for (i = 0; i < rep->maxfield; i++) {
+ /* Ignore if report count is out of bounds. */
+ if (rep->field[i]->report_count < 1)
+ continue;
+
+ for (j = 0; j < rep->field[i]->maxusage; j++) {
+ usage = &rep->field[i]->usage[j];
+
+ if (mt_need_to_apply_feature(hdev,
+ rep->field[i],
+ usage,
+ latency,
+ surface_switch,
+ button_switch,
+ &inputmode_found))
+ update_report = true;
+ }
+ }
+
+ if (update_report)
+ hid_hw_request(hdev, rep, HID_REQ_SET_REPORT);
+ }
+}
+
+static void mt_post_parse_default_settings(struct mt_device *td,
+ struct mt_application *app)
+{
+ __s32 quirks = app->quirks;
+
+ /* unknown serial device needs special quirks */
+ if (list_is_singular(&app->mt_usages)) {
+ quirks |= MT_QUIRK_ALWAYS_VALID;
+ quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
+ quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
+ quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
+ quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
+ }
+
+ app->quirks = quirks;
+}
+
+static void mt_post_parse(struct mt_device *td, struct mt_application *app)
+{
+ if (!app->have_contact_count)
+ app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
+}
+
+static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
+{
+ struct mt_device *td = hid_get_drvdata(hdev);
+ char *name;
+ const char *suffix = NULL;
+ unsigned int application = 0;
+ struct mt_report_data *rdata;
+ struct mt_application *mt_application = NULL;
+ struct hid_report *report;
+ int ret;
+
+ list_for_each_entry(report, &hi->reports, hidinput_list) {
+ application = report->application;
+ rdata = mt_find_report_data(td, report);
+ if (!rdata) {
+ hid_err(hdev, "failed to allocate data for report\n");
+ return -ENOMEM;
+ }
+
+ mt_application = rdata->application;
+
+ if (rdata->is_mt_collection) {
+ ret = mt_touch_input_configured(hdev, hi,
+ mt_application);
+ if (ret)
+ return ret;
+ }
+
+ /*
+ * some egalax touchscreens have "application == DG_TOUCHSCREEN"
+ * for the stylus. Check this first, and then rely on
+ * the application field.
+ */
+ if (report->field[0]->physical == HID_DG_STYLUS) {
+ suffix = "Pen";
+ /* force BTN_STYLUS to allow tablet matching in udev */
+ __set_bit(BTN_STYLUS, hi->input->keybit);
+ }
+ }
+
+ if (!suffix) {
+ switch (application) {
+ case HID_GD_KEYBOARD:
+ case HID_GD_KEYPAD:
+ case HID_GD_MOUSE:
+ case HID_DG_TOUCHPAD:
+ case HID_GD_SYSTEM_CONTROL:
+ case HID_CP_CONSUMER_CONTROL:
+ case HID_GD_WIRELESS_RADIO_CTLS:
+ case HID_GD_SYSTEM_MULTIAXIS:
+ /* already handled by hid core */
+ break;
+ case HID_DG_TOUCHSCREEN:
+ /* we do not set suffix = "Touchscreen" */
+ hi->input->name = hdev->name;
+ break;
+ case HID_DG_STYLUS:
+ /* force BTN_STYLUS to allow tablet matching in udev */
+ __set_bit(BTN_STYLUS, hi->input->keybit);
+ break;
+ case HID_VD_ASUS_CUSTOM_MEDIA_KEYS:
+ suffix = "Custom Media Keys";
+ break;
+ default:
+ suffix = "UNKNOWN";
+ break;
+ }
+ }
+
+ if (suffix) {
+ name = devm_kzalloc(&hi->input->dev,
+ strlen(hdev->name) + strlen(suffix) + 2,
+ GFP_KERNEL);
+ if (name) {
+ sprintf(name, "%s %s", hdev->name, suffix);
+ hi->input->name = name;
+ }
+ }
+
+ return 0;
+}
+
+static void mt_fix_const_field(struct hid_field *field, unsigned int usage)
+{
+ if (field->usage[0].hid != usage ||
+ !(field->flags & HID_MAIN_ITEM_CONSTANT))
+ return;
+
+ field->flags &= ~HID_MAIN_ITEM_CONSTANT;
+ field->flags |= HID_MAIN_ITEM_VARIABLE;
+}
+
+static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage)
+{
+ struct hid_report *report;
+ int i;
+
+ list_for_each_entry(report,
+ &hdev->report_enum[HID_INPUT_REPORT].report_list,
+ list) {
+
+ if (!report->maxfield)
+ continue;
+
+ for (i = 0; i < report->maxfield; i++)
+ if (report->field[i]->maxusage >= 1)
+ mt_fix_const_field(report->field[i], usage);
+ }
+}
+
+static void mt_release_contacts(struct hid_device *hid)
+{
+ struct hid_input *hidinput;
+ struct mt_application *application;
+ struct mt_device *td = hid_get_drvdata(hid);
+
+ list_for_each_entry(hidinput, &hid->inputs, list) {
+ struct input_dev *input_dev = hidinput->input;
+ struct input_mt *mt = input_dev->mt;
+ int i;
+
+ if (mt) {
+ for (i = 0; i < mt->num_slots; i++) {
+ input_mt_slot(input_dev, i);
+ input_mt_report_slot_state(input_dev,
+ MT_TOOL_FINGER,
+ false);
+ }
+ input_mt_sync_frame(input_dev);
+ input_sync(input_dev);
+ }
+ }
+
+ list_for_each_entry(application, &td->applications, list) {
+ application->num_received = 0;
+ }
+}
+
+static void mt_expired_timeout(struct timer_list *t)
+{
+ struct mt_device *td = from_timer(td, t, release_timer);
+ struct hid_device *hdev = td->hdev;
+
+ /*
+ * An input report came in just before we release the sticky fingers,
+ * it will take care of the sticky fingers.
+ */
+ if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
+ return;
+ if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
+ mt_release_contacts(hdev);
+ clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
+}
+
+static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
+{
+ int ret, i;
+ struct mt_device *td;
+ const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
+
+ for (i = 0; mt_classes[i].name ; i++) {
+ if (id->driver_data == mt_classes[i].name) {
+ mtclass = &(mt_classes[i]);
+ break;
+ }
+ }
+
+ td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
+ if (!td) {
+ dev_err(&hdev->dev, "cannot allocate multitouch data\n");
+ return -ENOMEM;
+ }
+ td->hdev = hdev;
+ td->mtclass = *mtclass;
+ td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
+ hid_set_drvdata(hdev, td);
+
+ INIT_LIST_HEAD(&td->applications);
+ INIT_LIST_HEAD(&td->reports);
+
+ if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
+ td->serial_maybe = true;
+
+ /* This allows the driver to correctly support devices
+ * that emit events over several HID messages.
+ */
+ hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
+
+ /*
+ * This allows the driver to handle different input sensors
+ * that emits events through different applications on the same HID
+ * device.
+ */
+ hdev->quirks |= HID_QUIRK_INPUT_PER_APP;
+
+ if (id->group != HID_GROUP_MULTITOUCH_WIN_8)
+ hdev->quirks |= HID_QUIRK_MULTI_INPUT;
+
+ timer_setup(&td->release_timer, mt_expired_timeout, 0);
+
+ ret = hid_parse(hdev);
+ if (ret != 0)
+ return ret;
+
+ if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID)
+ mt_fix_const_fields(hdev, HID_DG_CONTACTID);
+
+ ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
+ if (ret)
+ return ret;
+
+ ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
+ if (ret)
+ dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n",
+ hdev->name);
+
+ mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int mt_reset_resume(struct hid_device *hdev)
+{
+ mt_release_contacts(hdev);
+ mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true);
+ return 0;
+}
+
+static int mt_resume(struct hid_device *hdev)
+{
+ /* Some Elan legacy devices require SET_IDLE to be set on resume.
+ * It should be safe to send it to other devices too.
+ * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
+
+ hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
+
+ return 0;
+}
+#endif
+
+static void mt_remove(struct hid_device *hdev)
+{
+ struct mt_device *td = hid_get_drvdata(hdev);
+
+ del_timer_sync(&td->release_timer);
+
+ sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
+ hid_hw_stop(hdev);
+}
+
+/*
+ * This list contains only:
+ * - VID/PID of products not working with the default multitouch handling
+ * - 2 generic rules.
+ * So there is no point in adding here any device with MT_CLS_DEFAULT.
+ */
+static const struct hid_device_id mt_devices[] = {
+
+ /* 3M panels */
+ { .driver_data = MT_CLS_3M,
+ MT_USB_DEVICE(USB_VENDOR_ID_3M,
+ USB_DEVICE_ID_3M1968) },
+ { .driver_data = MT_CLS_3M,
+ MT_USB_DEVICE(USB_VENDOR_ID_3M,
+ USB_DEVICE_ID_3M2256) },
+ { .driver_data = MT_CLS_3M,
+ MT_USB_DEVICE(USB_VENDOR_ID_3M,
+ USB_DEVICE_ID_3M3266) },
+
+ /* Alps devices */
+ { .driver_data = MT_CLS_WIN_8_DUAL,
+ HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
+ USB_VENDOR_ID_ALPS_JP,
+ HID_DEVICE_ID_ALPS_U1_DUAL_PTP) },
+ { .driver_data = MT_CLS_WIN_8_DUAL,
+ HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
+ USB_VENDOR_ID_ALPS_JP,
+ HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP) },
+
+ /* Lenovo X1 TAB Gen 2 */
+ { .driver_data = MT_CLS_WIN_8_DUAL,
+ HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
+ USB_VENDOR_ID_LENOVO,
+ USB_DEVICE_ID_LENOVO_X1_TAB) },
+
+ /* Anton devices */
+ { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
+ MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
+ USB_DEVICE_ID_ANTON_TOUCH_PAD) },
+
+ /* Asus T304UA */
+ { .driver_data = MT_CLS_ASUS,
+ HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
+ USB_VENDOR_ID_ASUSTEK,
+ USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) },
+
+ /* Atmel panels */
+ { .driver_data = MT_CLS_SERIAL,
+ MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
+ USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
+
+ /* Baanto multitouch devices */
+ { .driver_data = MT_CLS_NSMU,
+ MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
+ USB_DEVICE_ID_BAANTO_MT_190W2) },
+
+ /* Cando panels */
+ { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
+ MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
+ USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
+ { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
+ MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
+ USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
+
+ /* Chunghwa Telecom touch panels */
+ { .driver_data = MT_CLS_NSMU,
+ MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
+ USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
+
+ /* Cirque devices */
+ { .driver_data = MT_CLS_WIN_8_DUAL,
+ HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
+ I2C_VENDOR_ID_CIRQUE,
+ I2C_PRODUCT_ID_CIRQUE_121F) },
+
+ /* CJTouch panels */
+ { .driver_data = MT_CLS_NSMU,
+ MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
+ USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) },
+ { .driver_data = MT_CLS_NSMU,
+ MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
+ USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) },
+
+ /* CVTouch panels */
+ { .driver_data = MT_CLS_NSMU,
+ MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
+ USB_DEVICE_ID_CVTOUCH_SCREEN) },
+
+ /* eGalax devices (resistive) */
+ { .driver_data = MT_CLS_EGALAX,
+ MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
+ { .driver_data = MT_CLS_EGALAX,
+ MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
+
+ /* eGalax devices (capacitive) */
+ { .driver_data = MT_CLS_EGALAX_SERIAL,
+ MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
+ { .driver_data = MT_CLS_EGALAX,
+ MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
+ { .driver_data = MT_CLS_EGALAX_SERIAL,
+ MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
+ { .driver_data = MT_CLS_EGALAX_SERIAL,
+ MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
+ { .driver_data = MT_CLS_EGALAX_SERIAL,
+ MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
+ { .driver_data = MT_CLS_EGALAX_SERIAL,
+ MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
+ { .driver_data = MT_CLS_EGALAX,
+ MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
+ { .driver_data = MT_CLS_EGALAX,
+ MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
+ { .driver_data = MT_CLS_EGALAX_SERIAL,
+ MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
+ { .driver_data = MT_CLS_EGALAX,
+ HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
+ { .driver_data = MT_CLS_EGALAX,
+ HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
+ { .driver_data = MT_CLS_EGALAX,
+ MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
+ { .driver_data = MT_CLS_EGALAX,
+ MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
+ { .driver_data = MT_CLS_EGALAX_SERIAL,
+ MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
+ { .driver_data = MT_CLS_EGALAX_SERIAL,
+ MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
+ { .driver_data = MT_CLS_EGALAX_SERIAL,
+ MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
+
+ /* Elitegroup panel */
+ { .driver_data = MT_CLS_SERIAL,
+ MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
+ USB_DEVICE_ID_ELITEGROUP_05D8) },
+
+ /* Flatfrog Panels */
+ { .driver_data = MT_CLS_FLATFROG,
+ MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
+ USB_DEVICE_ID_MULTITOUCH_3200) },
+
+ /* FocalTech Panels */
+ { .driver_data = MT_CLS_SERIAL,
+ MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
+ USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
+
+ /* GeneralTouch panel */
+ { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
+ MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
+ USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
+ { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
+ MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
+ USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
+ { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
+ MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
+ USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
+ { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
+ MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
+ USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
+ { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
+ MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
+ USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) },
+ { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
+ MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
+ USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) },
+ { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
+ MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
+ USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) },
+
+ /* Gametel game controller */
+ { .driver_data = MT_CLS_NSMU,
+ MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
+ USB_DEVICE_ID_GAMETEL_MT_MODE) },
+
+ /* GoodTouch panels */
+ { .driver_data = MT_CLS_NSMU,
+ MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
+ USB_DEVICE_ID_GOODTOUCH_000f) },
+
+ /* Hanvon panels */
+ { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
+ MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
+ USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
+
+ /* Ilitek dual touch panel */
+ { .driver_data = MT_CLS_NSMU,
+ MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
+ USB_DEVICE_ID_ILITEK_MULTITOUCH) },
+
+ /* LG Melfas panel */
+ { .driver_data = MT_CLS_LG,
+ HID_USB_DEVICE(USB_VENDOR_ID_LG,
+ USB_DEVICE_ID_LG_MELFAS_MT) },
+
+ /* MosArt panels */
+ { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
+ MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
+ USB_DEVICE_ID_ASUS_T91MT)},
+ { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
+ MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
+ USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
+ { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
+ MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
+ USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
+
+ /* Novatek Panel */
+ { .driver_data = MT_CLS_NSMU,
+ MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
+ USB_DEVICE_ID_NOVATEK_PCT) },
+
+ /* Ntrig Panel */
+ { .driver_data = MT_CLS_NSMU,
+ HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
+ USB_VENDOR_ID_NTRIG, 0x1b05) },
+
+ /* Panasonic panels */
+ { .driver_data = MT_CLS_PANASONIC,
+ MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
+ USB_DEVICE_ID_PANABOARD_UBT780) },
+ { .driver_data = MT_CLS_PANASONIC,
+ MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
+ USB_DEVICE_ID_PANABOARD_UBT880) },
+
+ /* PixArt optical touch screen */
+ { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
+ MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
+ USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
+ { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
+ MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
+ USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
+ { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
+ MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
+ USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
+
+ /* PixCir-based panels */
+ { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
+ MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
+ USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
+
+ /* Quanta-based panels */
+ { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
+ MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
+ USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
+
+ /* Razer touchpads */
+ { .driver_data = MT_CLS_RAZER_BLADE_STEALTH,
+ HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
+ USB_VENDOR_ID_SYNAPTICS, 0x8323) },
+
+ /* Stantum panels */
+ { .driver_data = MT_CLS_CONFIDENCE,
+ MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
+ USB_DEVICE_ID_MTP_STM)},
+
+ /* TopSeed panels */
+ { .driver_data = MT_CLS_TOPSEED,
+ MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
+ USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
+
+ /* Touch International panels */
+ { .driver_data = MT_CLS_NSMU,
+ MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
+ USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
+
+ /* Unitec panels */
+ { .driver_data = MT_CLS_NSMU,
+ MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
+ USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
+ { .driver_data = MT_CLS_NSMU,
+ MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
+ USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
+
+ /* VTL panels */
+ { .driver_data = MT_CLS_VTL,
+ MT_USB_DEVICE(USB_VENDOR_ID_VTL,
+ USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
+
+ /* Wistron panels */
+ { .driver_data = MT_CLS_NSMU,
+ MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
+ USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
+
+ /* XAT */
+ { .driver_data = MT_CLS_NSMU,
+ MT_USB_DEVICE(USB_VENDOR_ID_XAT,
+ USB_DEVICE_ID_XAT_CSR) },
+
+ /* Xiroku */
+ { .driver_data = MT_CLS_NSMU,
+ MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
+ USB_DEVICE_ID_XIROKU_SPX) },
+ { .driver_data = MT_CLS_NSMU,
+ MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
+ USB_DEVICE_ID_XIROKU_MPX) },
+ { .driver_data = MT_CLS_NSMU,
+ MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
+ USB_DEVICE_ID_XIROKU_CSR) },
+ { .driver_data = MT_CLS_NSMU,
+ MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
+ USB_DEVICE_ID_XIROKU_SPX1) },
+ { .driver_data = MT_CLS_NSMU,
+ MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
+ USB_DEVICE_ID_XIROKU_MPX1) },
+ { .driver_data = MT_CLS_NSMU,
+ MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
+ USB_DEVICE_ID_XIROKU_CSR1) },
+ { .driver_data = MT_CLS_NSMU,
+ MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
+ USB_DEVICE_ID_XIROKU_SPX2) },
+ { .driver_data = MT_CLS_NSMU,
+ MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
+ USB_DEVICE_ID_XIROKU_MPX2) },
+ { .driver_data = MT_CLS_NSMU,
+ MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
+ USB_DEVICE_ID_XIROKU_CSR2) },
+
+ /* Google MT devices */
+ { .driver_data = MT_CLS_GOOGLE,
+ HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE,
+ USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) },
+
+ /* Generic MT device */
+ { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
+
+ /* Generic Win 8 certified MT device */
+ { .driver_data = MT_CLS_WIN_8,
+ HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
+ HID_ANY_ID, HID_ANY_ID) },
+ { }
+};
+MODULE_DEVICE_TABLE(hid, mt_devices);
+
+static const struct hid_usage_id mt_grabbed_usages[] = {
+ { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
+ { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
+};
+
+static struct hid_driver mt_driver = {
+ .name = "hid-multitouch",
+ .id_table = mt_devices,
+ .probe = mt_probe,
+ .remove = mt_remove,
+ .input_mapping = mt_input_mapping,
+ .input_mapped = mt_input_mapped,
+ .input_configured = mt_input_configured,
+ .feature_mapping = mt_feature_mapping,
+ .usage_table = mt_grabbed_usages,
+ .event = mt_event,
+ .report = mt_report,
+#ifdef CONFIG_PM
+ .reset_resume = mt_reset_resume,
+ .resume = mt_resume,
+#endif
+};
+module_hid_driver(mt_driver);