[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/os/linux/linux-3.4.x/drivers/hid/hid-multitouch.c b/ap/os/linux/linux-3.4.x/drivers/hid/hid-multitouch.c
new file mode 100644
index 0000000..0e98570
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/hid/hid-multitouch.c
@@ -0,0 +1,1090 @@
+/*
+ * HID driver for multitouch panels
+ *
+ * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
+ * Copyright (c) 2010-2012 Benjamin Tissoires <benjamin.tissoires@gmail.com>
+ * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
+ *
+ * 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.
+ */
+
+#include <linux/device.h>
+#include <linux/hid.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/usb.h>
+#include <linux/input/mt.h>
+#include "usbhid/usbhid.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 (1 << 0)
+#define MT_QUIRK_SLOT_IS_CONTACTID (1 << 1)
+#define MT_QUIRK_CYPRESS (1 << 2)
+#define MT_QUIRK_SLOT_IS_CONTACTNUMBER (1 << 3)
+#define MT_QUIRK_ALWAYS_VALID (1 << 4)
+#define MT_QUIRK_VALID_IS_INRANGE (1 << 5)
+#define MT_QUIRK_VALID_IS_CONFIDENCE (1 << 6)
+#define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE (1 << 8)
+
+struct mt_slot {
+ __s32 x, y, p, w, h;
+ __s32 contactid; /* the device ContactID assigned to this slot */
+ bool touch_state; /* is the touch valid? */
+ bool seen_in_this_frame;/* has this slot been updated */
+};
+
+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 */
+};
+
+struct mt_fields {
+ unsigned usages[HID_MAX_FIELDS];
+ unsigned int length;
+};
+
+struct mt_device {
+ struct mt_slot curdata; /* placeholder of incoming data */
+ struct mt_class mtclass; /* our mt device class */
+ struct mt_fields *fields; /* temporary placeholder for storing the
+ multitouch fields */
+ unsigned last_field_index; /* last field index of the report */
+ unsigned last_slot_field; /* the last field of a slot */
+ __s16 inputmode; /* InputMode HID feature, -1 if non-existent */
+ __s16 maxcontact_report_id; /* Maximum Contact Number HID feature,
+ -1 if non-existent */
+ __u8 num_received; /* how many contacts we received */
+ __u8 num_expected; /* expected last contact index */
+ __u8 maxcontacts;
+ __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 */
+ bool curvalid; /* is the current contact valid? */
+ struct mt_slot *slots;
+};
+
+/* 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
+#define MT_CLS_DUAL_NSMU_CONTACTID 0x0008
+#define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
+
+/* vendor specific classes */
+#define MT_CLS_3M 0x0101
+#define MT_CLS_CYPRESS 0x0102
+#define MT_CLS_EGALAX 0x0103
+#define MT_CLS_EGALAX_SERIAL 0x0104
+#define MT_CLS_TOPSEED 0x0105
+#define MT_CLS_PANASONIC 0x0106
+
+#define MT_DEFAULT_MAXCONTACT 10
+
+/*
+ * these device-dependent functions determine what slot corresponds
+ * to a valid contact that was just read.
+ */
+
+static int cypress_compute_slot(struct mt_device *td)
+{
+ if (td->curdata.contactid != 0 || td->num_received == 0)
+ return td->curdata.contactid;
+ else
+ return -1;
+}
+
+static int find_slot_from_contactid(struct mt_device *td)
+{
+ int i;
+ for (i = 0; i < td->maxcontacts; ++i) {
+ if (td->slots[i].contactid == td->curdata.contactid &&
+ td->slots[i].touch_state)
+ return i;
+ }
+ for (i = 0; i < td->maxcontacts; ++i) {
+ if (!td->slots[i].seen_in_this_frame &&
+ !td->slots[i].touch_state)
+ return i;
+ }
+ /* should not occurs. If this happens that means
+ * that the device sent more touches that it says
+ * in the report descriptor. It is ignored then. */
+ return -1;
+}
+
+static struct mt_class mt_classes[] = {
+ { .name = MT_CLS_DEFAULT,
+ .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_DUAL_NSMU_CONTACTID,
+ .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
+ MT_QUIRK_SLOT_IS_CONTACTID,
+ .maxcontacts = 2 },
+ { .name = MT_CLS_INRANGE_CONTACTNUMBER,
+ .quirks = MT_QUIRK_VALID_IS_INRANGE |
+ MT_QUIRK_SLOT_IS_CONTACTNUMBER },
+
+ /*
+ * vendor specific classes
+ */
+ { .name = MT_CLS_3M,
+ .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
+ MT_QUIRK_SLOT_IS_CONTACTID,
+ .sn_move = 2048,
+ .sn_width = 128,
+ .sn_height = 128 },
+ { .name = MT_CLS_CYPRESS,
+ .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
+ MT_QUIRK_CYPRESS,
+ .maxcontacts = 10 },
+ { .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 },
+
+ { }
+};
+
+static ssize_t mt_show_quirks(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct hid_device *hdev = container_of(dev, struct 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 = container_of(dev, struct hid_device, dev);
+ struct mt_device *td = hid_get_drvdata(hdev);
+
+ unsigned long val;
+
+ if (kstrtoul(buf, 0, &val))
+ return -EINVAL;
+
+ td->mtclass.quirks = val;
+
+ 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 struct attribute_group mt_attribute_group = {
+ .attrs = sysfs_attrs
+};
+
+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_INPUTMODE:
+ td->inputmode = field->report->id;
+ break;
+ case HID_DG_CONTACTMAX:
+ td->maxcontact_report_id = field->report->id;
+ td->maxcontacts = field->value[0];
+ if (td->mtclass.maxcontacts)
+ /* check if the maxcontacts is given by the class */
+ td->maxcontacts = td->mtclass.maxcontacts;
+
+ 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);
+}
+
+static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
+ struct hid_input *hi)
+{
+ struct mt_fields *f = td->fields;
+
+ if (f->length >= HID_MAX_FIELDS)
+ return;
+
+ f->usages[f->length++] = usage->hid;
+}
+
+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_class *cls = &td->mtclass;
+ int code;
+
+ /* 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 (field->application == HID_DG_TOUCHSCREEN)
+ set_bit(INPUT_PROP_DIRECT, hi->input->propbit);
+ else if (field->application != HID_DG_TOUCHPAD)
+ return 0;
+
+ /* In case of an indirect device (touchpad), we need to add
+ * specific BTN_TOOL_* to be handled by the synaptics xorg
+ * driver.
+ * We also consider that touchscreens providing buttons are touchpads.
+ */
+ if (field->application == HID_DG_TOUCHPAD ||
+ (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON ||
+ cls->is_indirect) {
+ set_bit(INPUT_PROP_POINTER, hi->input->propbit);
+ set_bit(BTN_TOOL_FINGER, hi->input->keybit);
+ set_bit(BTN_TOOL_DOUBLETAP, hi->input->keybit);
+ set_bit(BTN_TOOL_TRIPLETAP, hi->input->keybit);
+ set_bit(BTN_TOOL_QUADTAP, hi->input->keybit);
+ }
+
+ /* eGalax devices provide a Digitizer.Stylus input which overrides
+ * the correct Digitizers.Finger X/Y ranges.
+ * Let's just ignore this input. */
+ if (field->physical == HID_DG_STYLUS)
+ return -1;
+
+ /* 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 (field->application == HID_DG_TOUCHSCREEN)
+ set_bit(INPUT_PROP_DIRECT, hi->input->propbit);
+ else if (field->application == HID_DG_TOUCHPAD)
+ set_bit(INPUT_PROP_POINTER, hi->input->propbit);
+ else
+ return 0;
+
+ switch (usage->hid & HID_USAGE_PAGE) {
+
+ case HID_UP_GENDESK:
+ switch (usage->hid) {
+ case HID_GD_X:
+ hid_map_usage(hi, usage, bit, max,
+ EV_ABS, ABS_MT_POSITION_X);
+ set_abs(hi->input, ABS_MT_POSITION_X, field,
+ cls->sn_move);
+ /* touchscreen emulation */
+ set_abs(hi->input, ABS_X, field, cls->sn_move);
+ mt_store_field(usage, td, hi);
+ td->last_field_index = field->index;
+ return 1;
+ case HID_GD_Y:
+ hid_map_usage(hi, usage, bit, max,
+ EV_ABS, ABS_MT_POSITION_Y);
+ set_abs(hi->input, ABS_MT_POSITION_Y, field,
+ cls->sn_move);
+ /* touchscreen emulation */
+ set_abs(hi->input, ABS_Y, field, cls->sn_move);
+ mt_store_field(usage, td, hi);
+ td->last_field_index = field->index;
+ return 1;
+ }
+ return 0;
+
+ case HID_UP_DIGITIZER:
+ switch (usage->hid) {
+ case HID_DG_INRANGE:
+ mt_store_field(usage, td, hi);
+ td->last_field_index = field->index;
+ return 1;
+ case HID_DG_CONFIDENCE:
+ mt_store_field(usage, td, hi);
+ td->last_field_index = field->index;
+ return 1;
+ case HID_DG_TIPSWITCH:
+ hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
+ input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
+ mt_store_field(usage, td, hi);
+ td->last_field_index = field->index;
+ return 1;
+ case HID_DG_CONTACTID:
+ if (!td->maxcontacts)
+ td->maxcontacts = MT_DEFAULT_MAXCONTACT;
+ input_mt_init_slots(hi->input, td->maxcontacts);
+ mt_store_field(usage, td, hi);
+ td->last_field_index = field->index;
+ td->touches_by_report++;
+ return 1;
+ case HID_DG_WIDTH:
+ hid_map_usage(hi, usage, bit, max,
+ EV_ABS, ABS_MT_TOUCH_MAJOR);
+ set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
+ cls->sn_width);
+ mt_store_field(usage, td, hi);
+ td->last_field_index = field->index;
+ return 1;
+ case HID_DG_HEIGHT:
+ hid_map_usage(hi, usage, bit, max,
+ EV_ABS, ABS_MT_TOUCH_MINOR);
+ set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
+ cls->sn_height);
+ input_set_abs_params(hi->input,
+ ABS_MT_ORIENTATION, 0, 1, 0, 0);
+ mt_store_field(usage, td, hi);
+ td->last_field_index = field->index;
+ return 1;
+ case HID_DG_TIPPRESSURE:
+ hid_map_usage(hi, usage, bit, max,
+ EV_ABS, ABS_MT_PRESSURE);
+ set_abs(hi->input, ABS_MT_PRESSURE, field,
+ cls->sn_pressure);
+ /* touchscreen emulation */
+ set_abs(hi->input, ABS_PRESSURE, field,
+ cls->sn_pressure);
+ mt_store_field(usage, td, hi);
+ td->last_field_index = field->index;
+ return 1;
+ case HID_DG_CONTACTCOUNT:
+ td->last_field_index = field->index;
+ return 1;
+ case HID_DG_CONTACTMAX:
+ /* we don't set td->last_slot_field as contactcount and
+ * contact max are global to the report */
+ td->last_field_index = field->index;
+ 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);
+ 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_input_mapped(struct hid_device *hdev, struct hid_input *hi,
+ struct hid_field *field, struct hid_usage *usage,
+ unsigned long **bit, int *max)
+{
+ if (usage->type == EV_KEY || usage->type == EV_ABS)
+ set_bit(usage->type, hi->input->evbit);
+
+ return -1;
+}
+
+static int mt_compute_slot(struct mt_device *td)
+{
+ __s32 quirks = td->mtclass.quirks;
+
+ if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
+ return td->curdata.contactid;
+
+ if (quirks & MT_QUIRK_CYPRESS)
+ return cypress_compute_slot(td);
+
+ if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
+ return td->num_received;
+
+ if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
+ return td->curdata.contactid - 1;
+
+ return find_slot_from_contactid(td);
+}
+
+/*
+ * this function is called when a whole contact has been processed,
+ * so that it can assign it to a slot and store the data there
+ */
+static void mt_complete_slot(struct mt_device *td)
+{
+ td->curdata.seen_in_this_frame = true;
+ if (td->curvalid) {
+ int slotnum = mt_compute_slot(td);
+
+ if (slotnum >= 0 && slotnum < td->maxcontacts)
+ td->slots[slotnum] = td->curdata;
+ }
+ td->num_received++;
+}
+
+
+/*
+ * 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_emit_event(struct mt_device *td, struct input_dev *input)
+{
+ int i;
+
+ for (i = 0; i < td->maxcontacts; ++i) {
+ struct mt_slot *s = &(td->slots[i]);
+ if ((td->mtclass.quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) &&
+ !s->seen_in_this_frame) {
+ s->touch_state = false;
+ }
+
+ input_mt_slot(input, i);
+ input_mt_report_slot_state(input, MT_TOOL_FINGER,
+ s->touch_state);
+ if (s->touch_state) {
+ /* this finger is on the screen */
+ int wide = (s->w > s->h);
+ /* divided by two to match visual scale of touch */
+ int major = max(s->w, s->h) >> 1;
+ int minor = min(s->w, s->h) >> 1;
+
+ input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
+ input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
+ input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
+ input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
+ input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
+ input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
+ }
+ s->seen_in_this_frame = false;
+
+ }
+
+ input_mt_report_pointer_emulation(input, true);
+ input_sync(input);
+ td->num_received = 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);
+ __s32 quirks = td->mtclass.quirks;
+
+ if (hid->claimed & HID_CLAIMED_INPUT && td->slots) {
+ switch (usage->hid) {
+ case HID_DG_INRANGE:
+ if (quirks & MT_QUIRK_ALWAYS_VALID)
+ td->curvalid = true;
+ else if (quirks & MT_QUIRK_VALID_IS_INRANGE)
+ td->curvalid = value;
+ break;
+ case HID_DG_TIPSWITCH:
+ if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
+ td->curvalid = value;
+ td->curdata.touch_state = value;
+ break;
+ case HID_DG_CONFIDENCE:
+ if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
+ td->curvalid = value;
+ break;
+ case HID_DG_CONTACTID:
+ td->curdata.contactid = value;
+ break;
+ case HID_DG_TIPPRESSURE:
+ td->curdata.p = value;
+ break;
+ case HID_GD_X:
+ td->curdata.x = value;
+ break;
+ case HID_GD_Y:
+ td->curdata.y = value;
+ break;
+ case HID_DG_WIDTH:
+ td->curdata.w = value;
+ break;
+ case HID_DG_HEIGHT:
+ td->curdata.h = value;
+ break;
+ case HID_DG_CONTACTCOUNT:
+ /*
+ * Includes multi-packet support where subsequent
+ * packets are sent with zero contactcount.
+ */
+ if (value)
+ td->num_expected = value;
+ break;
+ case HID_DG_TOUCH:
+ /* do nothing */
+ break;
+
+ default:
+ /* fallback to the generic hidinput handling */
+ return 0;
+ }
+
+ if (usage->hid == td->last_slot_field)
+ mt_complete_slot(td);
+
+ if (field->index == td->last_field_index
+ && td->num_received >= td->num_expected)
+ mt_emit_event(td, field->hidinput->input);
+
+ }
+
+ /* we have handled the hidinput part, now remains hiddev */
+ if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
+ hid->hiddev_hid_event(hid, field, usage, value);
+
+ return 1;
+}
+
+static void mt_set_input_mode(struct hid_device *hdev)
+{
+ struct mt_device *td = hid_get_drvdata(hdev);
+ struct hid_report *r;
+ struct hid_report_enum *re;
+
+ if (td->inputmode < 0)
+ return;
+
+ re = &(hdev->report_enum[HID_FEATURE_REPORT]);
+ r = re->report_id_hash[td->inputmode];
+ if (r) {
+ r->field[0]->value[0] = 0x02;
+ usbhid_submit_report(hdev, r, USB_DIR_OUT);
+ }
+}
+
+static void mt_set_maxcontacts(struct hid_device *hdev)
+{
+ struct mt_device *td = hid_get_drvdata(hdev);
+ struct hid_report *r;
+ struct hid_report_enum *re;
+ int fieldmax, max;
+
+ if (td->maxcontact_report_id < 0)
+ return;
+
+ if (!td->mtclass.maxcontacts)
+ return;
+
+ re = &hdev->report_enum[HID_FEATURE_REPORT];
+ r = re->report_id_hash[td->maxcontact_report_id];
+ if (r) {
+ max = td->mtclass.maxcontacts;
+ fieldmax = r->field[0]->logical_maximum;
+ max = min(fieldmax, max);
+ if (r->field[0]->value[0] != max) {
+ r->field[0]->value[0] = max;
+ usbhid_submit_report(hdev, r, USB_DIR_OUT);
+ }
+ }
+}
+
+static void mt_post_parse(struct mt_device *td)
+{
+ struct mt_fields *f = td->fields;
+
+ if (td->touches_by_report > 0) {
+ int field_count_per_touch = f->length / td->touches_by_report;
+ td->last_slot_field = f->usages[field_count_per_touch - 1];
+ }
+}
+
+static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
+{
+ int ret, i;
+ struct mt_device *td;
+ struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
+
+ if (id) {
+ for (i = 0; mt_classes[i].name ; i++) {
+ if (id->driver_data == mt_classes[i].name) {
+ mtclass = &(mt_classes[i]);
+ break;
+ }
+ }
+ }
+
+ /* This allows the driver to correctly support devices
+ * that emit events over several HID messages.
+ */
+ hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
+ hdev->quirks &= ~HID_QUIRK_MULTITOUCH;
+
+ td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
+ if (!td) {
+ dev_err(&hdev->dev, "cannot allocate multitouch data\n");
+ return -ENOMEM;
+ }
+ td->mtclass = *mtclass;
+ td->inputmode = -1;
+ td->maxcontact_report_id = -1;
+ hid_set_drvdata(hdev, td);
+
+ td->fields = kzalloc(sizeof(struct mt_fields), GFP_KERNEL);
+ if (!td->fields) {
+ dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ ret = hid_parse(hdev);
+ if (ret != 0)
+ goto fail;
+
+ ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
+ if (ret)
+ goto fail;
+
+ mt_post_parse(td);
+
+ if (!id && td->touches_by_report == 1) {
+ /* the device has been sent by hid-generic */
+ mtclass = &td->mtclass;
+ mtclass->quirks |= MT_QUIRK_ALWAYS_VALID;
+ mtclass->quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
+ mtclass->quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
+ mtclass->quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
+ }
+
+ td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot),
+ GFP_KERNEL);
+ if (!td->slots) {
+ dev_err(&hdev->dev, "cannot allocate multitouch slots\n");
+ hid_hw_stop(hdev);
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
+
+ mt_set_maxcontacts(hdev);
+ mt_set_input_mode(hdev);
+
+ kfree(td->fields);
+ td->fields = NULL;
+
+ return 0;
+
+fail:
+ kfree(td->fields);
+ kfree(td);
+ return ret;
+}
+
+#ifdef CONFIG_PM
+static int mt_reset_resume(struct hid_device *hdev)
+{
+ mt_set_maxcontacts(hdev);
+ mt_set_input_mode(hdev);
+ return 0;
+}
+#endif
+
+static void mt_remove(struct hid_device *hdev)
+{
+ struct mt_device *td = hid_get_drvdata(hdev);
+ sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
+ hid_hw_stop(hdev);
+ kfree(td->slots);
+ kfree(td);
+ hid_set_drvdata(hdev, NULL);
+}
+
+static const struct hid_device_id mt_devices[] = {
+
+ /* 3M panels */
+ { .driver_data = MT_CLS_3M,
+ HID_USB_DEVICE(USB_VENDOR_ID_3M,
+ USB_DEVICE_ID_3M1968) },
+ { .driver_data = MT_CLS_3M,
+ HID_USB_DEVICE(USB_VENDOR_ID_3M,
+ USB_DEVICE_ID_3M2256) },
+ { .driver_data = MT_CLS_3M,
+ HID_USB_DEVICE(USB_VENDOR_ID_3M,
+ USB_DEVICE_ID_3M3266) },
+
+ /* ActionStar panels */
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR,
+ USB_DEVICE_ID_ACTIONSTAR_1011) },
+
+ /* Atmel panels */
+ { .driver_data = MT_CLS_SERIAL,
+ HID_USB_DEVICE(USB_VENDOR_ID_ATMEL,
+ USB_DEVICE_ID_ATMEL_MULTITOUCH) },
+ { .driver_data = MT_CLS_SERIAL,
+ HID_USB_DEVICE(USB_VENDOR_ID_ATMEL,
+ USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
+
+ /* Baanto multitouch devices */
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_USB_DEVICE(USB_VENDOR_ID_BAANTO,
+ USB_DEVICE_ID_BAANTO_MT_190W2) },
+ /* Cando panels */
+ { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
+ HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
+ USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
+ { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
+ HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
+ USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
+ { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
+ HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
+ USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
+ { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
+ HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
+ USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
+
+ /* Chunghwa Telecom touch panels */
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
+ USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
+
+ /* CVTouch panels */
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
+ USB_DEVICE_ID_CVTOUCH_SCREEN) },
+
+ /* Cypress panel */
+ { .driver_data = MT_CLS_CYPRESS,
+ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
+ USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
+
+ /* eGalax devices (resistive) */
+ { .driver_data = MT_CLS_EGALAX,
+ HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
+ { .driver_data = MT_CLS_EGALAX,
+ HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
+
+ /* eGalax devices (capacitive) */
+ { .driver_data = MT_CLS_EGALAX,
+ HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
+ { .driver_data = MT_CLS_EGALAX_SERIAL,
+ HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
+ { .driver_data = MT_CLS_EGALAX_SERIAL,
+ HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
+ { .driver_data = MT_CLS_EGALAX_SERIAL,
+ HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
+ { .driver_data = MT_CLS_EGALAX_SERIAL,
+ HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
+ { .driver_data = MT_CLS_EGALAX,
+ HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
+ { .driver_data = MT_CLS_EGALAX_SERIAL,
+ HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
+ { .driver_data = MT_CLS_EGALAX,
+ HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
+ { .driver_data = MT_CLS_EGALAX_SERIAL,
+ HID_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_72FA) },
+ { .driver_data = MT_CLS_EGALAX,
+ HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
+ { .driver_data = MT_CLS_EGALAX_SERIAL,
+ HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
+ { .driver_data = MT_CLS_EGALAX_SERIAL,
+ HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
+ USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
+
+ /* Elo TouchSystems IntelliTouch Plus panel */
+ { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID,
+ HID_USB_DEVICE(USB_VENDOR_ID_ELO,
+ USB_DEVICE_ID_ELO_TS2515) },
+
+ /* GeneralTouch panel */
+ { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
+ HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
+ USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
+
+ /* Gametel game controller */
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_FRUCTEL,
+ USB_DEVICE_ID_GAMETEL_MT_MODE) },
+
+ /* GoodTouch panels */
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
+ USB_DEVICE_ID_GOODTOUCH_000f) },
+
+ /* Hanvon panels */
+ { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
+ HID_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
+ USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
+
+ /* Ideacom panel */
+ { .driver_data = MT_CLS_SERIAL,
+ HID_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
+ USB_DEVICE_ID_IDEACOM_IDC6650) },
+ { .driver_data = MT_CLS_SERIAL,
+ HID_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
+ USB_DEVICE_ID_IDEACOM_IDC6651) },
+
+ /* Ilitek dual touch panel */
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_USB_DEVICE(USB_VENDOR_ID_ILITEK,
+ USB_DEVICE_ID_ILITEK_MULTITOUCH) },
+
+ /* IRTOUCH panels */
+ { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
+ HID_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
+ USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
+
+ /* LG Display panels */
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_USB_DEVICE(USB_VENDOR_ID_LG,
+ USB_DEVICE_ID_LG_MULTITOUCH) },
+
+ /* Lumio panels */
+ { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
+ HID_USB_DEVICE(USB_VENDOR_ID_LUMIO,
+ USB_DEVICE_ID_CRYSTALTOUCH) },
+ { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
+ HID_USB_DEVICE(USB_VENDOR_ID_LUMIO,
+ USB_DEVICE_ID_CRYSTALTOUCH_DUAL) },
+
+ /* MosArt panels */
+ { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
+ HID_USB_DEVICE(USB_VENDOR_ID_ASUS,
+ USB_DEVICE_ID_ASUS_T91MT)},
+ { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
+ HID_USB_DEVICE(USB_VENDOR_ID_ASUS,
+ USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
+ { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
+ HID_USB_DEVICE(USB_VENDOR_ID_TURBOX,
+ USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
+
+ /* Panasonic panels */
+ { .driver_data = MT_CLS_PANASONIC,
+ HID_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
+ USB_DEVICE_ID_PANABOARD_UBT780) },
+ { .driver_data = MT_CLS_PANASONIC,
+ HID_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
+ USB_DEVICE_ID_PANABOARD_UBT880) },
+
+ /* Novatek Panel */
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
+ USB_DEVICE_ID_NOVATEK_PCT) },
+
+ /* PenMount panels */
+ { .driver_data = MT_CLS_CONFIDENCE,
+ HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
+ USB_DEVICE_ID_PENMOUNT_PCI) },
+
+ /* PixArt optical touch screen */
+ { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
+ HID_USB_DEVICE(USB_VENDOR_ID_PIXART,
+ USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
+ { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
+ HID_USB_DEVICE(USB_VENDOR_ID_PIXART,
+ USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
+ { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
+ HID_USB_DEVICE(USB_VENDOR_ID_PIXART,
+ USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
+
+ /* PixCir-based panels */
+ { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
+ HID_USB_DEVICE(USB_VENDOR_ID_HANVON,
+ USB_DEVICE_ID_HANVON_MULTITOUCH) },
+ { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
+ HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
+ USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
+
+ /* Quanta-based panels */
+ { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
+ HID_USB_DEVICE(USB_VENDOR_ID_QUANTA,
+ USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) },
+ { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
+ HID_USB_DEVICE(USB_VENDOR_ID_QUANTA,
+ USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
+ { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
+ HID_USB_DEVICE(USB_VENDOR_ID_QUANTA,
+ USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008) },
+
+ /* Stantum panels */
+ { .driver_data = MT_CLS_CONFIDENCE,
+ HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
+ USB_DEVICE_ID_MTP)},
+ { .driver_data = MT_CLS_CONFIDENCE,
+ HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
+ USB_DEVICE_ID_MTP_STM)},
+ { .driver_data = MT_CLS_CONFIDENCE,
+ HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX,
+ USB_DEVICE_ID_MTP_SITRONIX)},
+
+ /* TopSeed panels */
+ { .driver_data = MT_CLS_TOPSEED,
+ HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
+ USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
+
+ /* Touch International panels */
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
+ USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
+
+ /* Unitec panels */
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_USB_DEVICE(USB_VENDOR_ID_UNITEC,
+ USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_USB_DEVICE(USB_VENDOR_ID_UNITEC,
+ USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
+ /* XAT */
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_USB_DEVICE(USB_VENDOR_ID_XAT,
+ USB_DEVICE_ID_XAT_CSR) },
+
+ /* Xiroku */
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_USB_DEVICE(USB_VENDOR_ID_XIROKU,
+ USB_DEVICE_ID_XIROKU_SPX) },
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_USB_DEVICE(USB_VENDOR_ID_XIROKU,
+ USB_DEVICE_ID_XIROKU_MPX) },
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_USB_DEVICE(USB_VENDOR_ID_XIROKU,
+ USB_DEVICE_ID_XIROKU_CSR) },
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_USB_DEVICE(USB_VENDOR_ID_XIROKU,
+ USB_DEVICE_ID_XIROKU_SPX1) },
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_USB_DEVICE(USB_VENDOR_ID_XIROKU,
+ USB_DEVICE_ID_XIROKU_MPX1) },
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_USB_DEVICE(USB_VENDOR_ID_XIROKU,
+ USB_DEVICE_ID_XIROKU_CSR1) },
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_USB_DEVICE(USB_VENDOR_ID_XIROKU,
+ USB_DEVICE_ID_XIROKU_SPX2) },
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_USB_DEVICE(USB_VENDOR_ID_XIROKU,
+ USB_DEVICE_ID_XIROKU_MPX2) },
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_USB_DEVICE(USB_VENDOR_ID_XIROKU,
+ USB_DEVICE_ID_XIROKU_CSR2) },
+
+ { }
+};
+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,
+ .feature_mapping = mt_feature_mapping,
+ .usage_table = mt_grabbed_usages,
+ .event = mt_event,
+#ifdef CONFIG_PM
+ .reset_resume = mt_reset_resume,
+#endif
+};
+
+static int __init mt_init(void)
+{
+ return hid_register_driver(&mt_driver);
+}
+
+static void __exit mt_exit(void)
+{
+ hid_unregister_driver(&mt_driver);
+}
+
+module_init(mt_init);
+module_exit(mt_exit);