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Release 4.14 drivers/hid/hid-multitouch.c

Directory: drivers/hid
/*
 *  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 tool hid-test[1].
 * This tool relies on hid-replay[2] and a database of hid devices[3].
 * Please run these regression tests before patching this module so that
 * your patch won't break existing known devices.
 *
 * [1] https://github.com/bentiss/hid-test
 * [2] https://github.com/bentiss/hid-replay
 * [3] https://github.com/bentiss/hid-devices
 */

#include <linux/device.h>
#include <linux/hid.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/input/mt.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_INPUTMODE_TOUCHSCREEN	0x02

#define MT_INPUTMODE_TOUCHPAD		0x03


#define MT_BUTTONTYPE_CLICKPAD		0


#define MT_IO_FLAGS_RUNNING		0

#define MT_IO_FLAGS_ACTIVE_SLOTS	1

#define MT_IO_FLAGS_PENDING_SLOTS	2


struct mt_slot {
	






__s32 x, y, cx, cy, p, w, h;
	
__s32 contactid;	/* the device ContactID assigned to this slot */
	
bool touch_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_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_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 timer_list release_timer;	/* to release sticky fingers */
	
struct mt_fields *fields;	/* temporary placeholder for storing the
                                           multitouch fields */
	
unsigned long mt_io_flags;	/* mt flags (MT_IO_FLAGS_*) */
	
int cc_index;	/* contact count field index in the report */
	
int cc_value_index;	/* contact count value index in the field */
	
unsigned last_slot_field;	/* the last field of a slot */
	
unsigned mt_report_id;	/* the report ID of the multitouch device */
	
unsigned long initial_quirks;	/* initial quirks state */
	
__s16 inputmode;	/* InputMode HID feature, -1 if non-existent */
	
__s16 inputmode_index;	/* InputMode HID feature index in the report */
	
__s16 maxcontact_report_id;	/* Maximum Contact Number HID feature,
                                   -1 if non-existent */
	
__u8 inputmode_value;  /* InputMode HID feature value */
	
__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 */
	
__u8 buttons_count;	/* number of physical buttons per touchpad */
	
bool is_buttonpad;	/* is this device a button pad? */
	
bool serial_maybe;	/* need to check for serial protocol */
	
bool curvalid;		/* is the current contact valid? */
	
unsigned mt_flags;	/* flags to pass to input-mt */
};

static void mt_post_parse_default_settings(struct mt_device *td);
static void mt_post_parse(struct mt_device *td);

/* 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_DEFAULT_MAXCONTACT	10

#define MT_MAX_MAXCONTACT	250


#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_device *td) { if (td->curdata.contactid != 0 || td->num_received == 0) return td->curdata.contactid; else return -1; }

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static 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 }, { .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, .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 }, { } };
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); }

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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); unsigned long val; if (kstrtoul(buf, 0, &val)) return -EINVAL; td->mtclass.quirks = val; if (td->cc_index < 0) td->mtclass.quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; return count; }

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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) { struct mt_device *td = hid_get_drvdata(hdev); int ret, size = hid_report_len(report); u8 *buf; /* * Do not fetch the feature report if the device has been explicitly * marked as non-capable. */ if (td->initial_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); }

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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: /* Ignore if value index is out of bounds. */ if (usage->usage_index >= field->report_count) { dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n"); break; } if (td->inputmode < 0) { td->inputmode = field->report->id; td->inputmode_index = usage->usage_index; } else { /* * 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. */ dev_info(&hdev->dev, "Ignoring the extra HID_DG_INPUTMODE\n"); } break; case HID_DG_CONTACTMAX: mt_get_feature(hdev, field->report); td->maxcontact_report_id = field->report->id; 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; } }

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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)); }

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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; }

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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_device *td = hid_get_drvdata(hdev); struct mt_class *cls = &td->mtclass; int code; struct hid_usage *prev_usage = NULL; if (field->application == HID_DG_TOUCHSCREEN) td->mt_flags |= INPUT_MT_DIRECT; /* * Model touchscreens providing buttons as touchpads. */ if (field->application == HID_DG_TOUCHPAD || (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { td->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) td->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)) { hid_map_usage(hi, usage, bit, max, EV_ABS, ABS_MT_TOOL_X); set_abs(hi->input, ABS_MT_TOOL_X, field, cls->sn_move); } else { 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); } mt_store_field(usage, td, hi); return 1; case HID_GD_Y: if (prev_usage && (prev_usage->hid == usage->hid)) { hid_map_usage(hi, usage, bit, max, EV_ABS, ABS_MT_TOOL_Y); set_abs(hi->input, ABS_MT_TOOL_Y, field, cls->sn_move); } else { 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); } mt_store_field(usage, td, hi); return 1; } return 0; case HID_UP_DIGITIZER: switch (usage->hid) { case HID_DG_INRANGE: if (cls->quirks & MT_QUIRK_HOVERING) { hid_map_usage(hi, usage, bit, max, EV_ABS, ABS_MT_DISTANCE); input_set_abs_params(hi->input, ABS_MT_DISTANCE, 0, 1, 0, 0); } mt_store_field(usage, td, hi); 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) cls->quirks |= MT_QUIRK_CONFIDENCE; mt_store_field(usage, td, hi); 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); return 1; case HID_DG_CONTACTID: mt_store_field(usage, td, hi); td->touches_by_report++; td->mt_report_id = field->report->id; return 1; case HID_DG_WIDTH: hid_map_usage(hi, usage, bit, max, EV_ABS, ABS_MT_TOUCH_MAJOR); if (!(cls->quirks & MT_QUIRK_NO_AREA)) set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, cls->sn_width); mt_store_field(usage, td, hi); return 1; case HID_DG_HEIGHT: hid_map_usage(hi, usage, bit, max, EV_ABS, ABS_MT_TOUCH_MINOR); if (!(cls->quirks & MT_QUIRK_NO_AREA)) { 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); 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); mt_store_field(usage, td, hi); return 1; case HID_DG_CONTACTCOUNT: /* Ignore if indexes are out of bounds. */ if (field->index >= field->report->maxfield || usage->usage_index >= field->report_count) return 1; td->cc_index = field->index; td->cc_value_index = usage->usage_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 */ 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 ((cls->name == MT_CLS_WIN_8 || cls->name == MT_CLS_WIN_8_DUAL) && field->application == HID_DG_TOUCHPAD && (usage->hid & HID_USAGE) > 1) code--; 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; }

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Alan Cox10.11%13.70%
Total882100.00%27100.00%


static int mt_compute_slot(struct mt_device *td, struct input_dev *input) { __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 input_mt_get_slot_by_key(input, td->curdata.contactid); }

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Total88100.00%7100.00%

/* * 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, struct input_dev *input) { if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && td->num_received >= td->num_expected) return; if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) { int active; int slotnum = mt_compute_slot(td, input); struct mt_slot *s = &td->curdata; struct input_mt *mt = input->mt; if (slotnum < 0 || slotnum >= td->maxcontacts) return; if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) { struct input_mt_slot *slot = &mt->slots[slotnum]; if (input_mt_is_active(slot) && input_mt_is_used(mt, slot)) return; } if (!(td->mtclass.quirks & MT_QUIRK_CONFIDENCE)) s->confidence_state = 1; active = (s->touch_state || s->inrange_state) && s->confidence_state; input_mt_slot(input, slotnum); input_mt_report_slot_state(input, MT_TOOL_FINGER, active); if (active) { /* this finger is in proximity of the sensor */ int wide = (s->w > s->h); int major = max(s->w, s->h); int minor = min(s->w, s->h); /* * divided by two to match visual scale of touch * for devices with this quirk */ if (td->mtclass.quirks & MT_QUIRK_TOUCH_SIZE_SCALING) { major = major >> 1; minor = minor >> 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_TOOL_X, s->cx); input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy); input_event(input, EV_ABS, ABS_MT_DISTANCE, !s->touch_state); 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); set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags); } } td->num_received++; }

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PersonTokensPropCommitsCommitProp
Benjamin Tissoires31078.48%975.00%
Allen Hung4010.13%18.33%
HungNien Chen246.08%18.33%
Henrik Rydberg215.32%18.33%
Total395100.00%12100.00%

/* * 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 input_dev *input) { input_mt_sync_frame(input); input_sync(input); td->num_received = 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); }

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PersonTokensPropCommitsCommitProp
Benjamin Tissoires5978.67%250.00%
Henrik Rydberg1621.33%250.00%
Total75100.00%4100.00%


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; }

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Benjamin Tissoires53100.00%3100.00%
Total53100.00%3100.00%


static void mt_process_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; struct input_dev *input = field->hidinput->input; if (hid->claimed & HID_CLAIMED_INPUT) { switch (usage->hid) { case HID_DG_INRANGE: if (quirks & MT_QUIRK_VALID_IS_INRANGE) td->curvalid = value; if (quirks & MT_QUIRK_HOVERING) td->curdata.inrange_state = 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_CONFIDENCE) td->curdata.confidence_state = value; 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: if (usage->code == ABS_MT_TOOL_X) td->curdata.cx = value; else td->curdata.x = value; break; case HID_GD_Y: if (usage->code == ABS_MT_TOOL_Y) td->curdata.cy = value; else 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: break; case HID_DG_TOUCH: /* do nothing */ break; default: if (usage->type) input_event(input, usage->type, usage->code, value); return; } if (usage->usage_index + 1 == field->report_count) { /* we only take into account the last report. */ if (usage->hid == td->last_slot_field) mt_complete_slot(td, field->hidinput->input); } } }

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PersonTokensPropCommitsCommitProp
Benjamin Tissoires31595.45%981.82%
Allen Hung144.24%19.09%
Henrik Rydberg10.30%19.09%
Total330100.00%11100.00%


static void mt_touch_report(struct hid_device *hid, struct hid_report *report) { struct mt_device *td = hid_get_drvdata(hid); struct hid_field *field; unsigned count; int r, n; /* sticky fingers release in progress, abort */ if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags)) return; /* * Includes multi-packet support where subsequent * packets are sent with zero contactcount. */ if (td->cc_index >= 0) { struct hid_field *field = report->field[td->cc_index]; int value = field->value[td->cc_value_index]; if (value) td->num_expected = value; } 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, field, &field->usage[n], field->value[n]); } if (td->num_received >= td->num_expected) mt_sync_frame(td, report->field[0]->hidinput->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 (td->mtclass.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); }

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PersonTokensPropCommitsCommitProp
Benjamin Tissoires264100.00%8100.00%
Total264100.00%8100.00%


static int mt_touch_input_configured(struct hid_device *hdev, struct hid_input *hi) { 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); if (td->serial_maybe) mt_post_parse_default_settings(td); if (cls->is_indirect) td->mt_flags |= INPUT_MT_POINTER; if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) td->mt_flags |= INPUT_MT_DROP_UNUSED; /* check for clickpads */ if ((td->mt_flags & INPUT_MT_POINTER) && (td->buttons_count == 1)) td->is_buttonpad = true; if (td->is_buttonpad) __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); ret = input_mt_init_slots(input, td->maxcontacts, td->mt_flags); if (ret) return ret; td->mt_flags = 0; return 0; }

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PersonTokensPropCommitsCommitProp
Benjamin Tissoires14683.91%466.67%
Dmitry Torokhov169.20%116.67%
Seth Forshee126.90%116.67%
Total174100.00%6100.00%

#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); /* * 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_VD_ASUS_CUSTOM_MEDIA_KEYS && td->mtclass.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 && td->mtclass.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; } /* * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" * for the stylus. * The check for mt_report_id ensures we don't process * HID_DG_CONTACTCOUNT from the pen report as it is outside the physical * collection, but within the report ID. */ if (field->physical == HID_DG_STYLUS) return 0; else if ((field->physical == 0) && (field->report->id != td->mt_report_id) && (td->mt_report_id != -1)) return 0; if (field->application == HID_DG_TOUCHSCREEN || field->application == HID_DG_TOUCHPAD) return mt_touch_input_mapping(hdev, hi, field, usage, bit, max); /* let hid-core decide for the others */ return 0; }

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PersonTokensPropCommitsCommitProp
Benjamin Tissoires14044.03%758.33%
João Paulo Rechi Vita13542.45%216.67%
Brent Adam3611.32%18.33%
Hans de Goede61.89%18.33%
Jiri Kosina10.31%18.33%
Total318100.00%12100.00%


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) { /* * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" * for the stylus. */ if (field->physical == HID_DG_STYLUS) return 0; if (field->application == HID_DG_TOUCHSCREEN || field->application == HID_DG_TOUCHPAD) { /* We own these mappings, tell hid-input to ignore them */ return -1; } /* let hid-core decide for the others */ return 0; }

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PersonTokensPropCommitsCommitProp
Benjamin Tissoires6893.15%480.00%
Dmitry Torokhov56.85%120.00%
Total73100.00%5100.00%


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); if (field->report->id == td->mt_report_id) return mt_touch_event(hid, field, usage, value); return 0; }

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PersonTokensPropCommitsCommitProp
Benjamin Tissoires61100.00%2100.00%
Total61100.00%2100.00%


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]; if (!(hid->claimed & HID_CLAIMED_INPUT)) return; if (report->id == td->mt_report_id) return mt_touch_report(hid, report); if (field && field->hidinput && field->hidinput->input) input_sync(field->hidinput->input); }

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Benjamin Tissoires91100.00%5100.00%
Total91100.00%5100.00%


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; struct mt_class *cls = &td->mtclass; char *buf; int report_len; if (td->inputmode < 0) return; re = &(hdev->report_enum[HID_FEATURE_REPORT]); r = re->report_id_hash[td->inputmode]; if (r) { if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) { report_len = hid_report_len(r); buf = hid_alloc_report_buf(r, GFP_KERNEL); if (!buf) { hid_err(hdev, "failed to allocate buffer for report\n"); return; } hid_hw_raw_request(hdev, r->id, buf, report_len, HID_FEATURE_REPORT, HID_REQ_GET_REPORT); kfree(buf); } r->field[0]->value[td->inputmode_index] = td->inputmode_value; hid_hw_request(hdev, r, HID_REQ_SET_REPORT); } }

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Benjamin Tissoires9352.84%350.00%
Mathieu Magnaudet8045.45%233.33%
Andrew Duggan31.70%116.67%
Total176100.00%6100.00%


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; hid_hw_request(hdev, r, HID_REQ_SET_REPORT); } } }

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PersonTokensPropCommitsCommitProp
Benjamin Tissoires151100.00%2100.00%
Total151100.00%2100.00%


static void mt_post_parse_default_settings(struct mt_device *td) { __s32 quirks = td->mtclass.quirks; /* unknown serial device needs special quirks */ if (td->touches_by_report == 1) { 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; } td->mtclass.quirks = quirks; }

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Henrik Rydberg5892.06%150.00%
Benjamin Tissoires57.94%150.00%
Total63100.00%2100.00%


static void mt_post_parse(struct mt_device *td) { struct mt_fields *f = td->fields; struct mt_class *cls = &td->mtclass; 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]; } if (td->cc_index < 0) cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; }

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Benjamin Tissoires79100.00%3100.00%
Total79100.00%3100.00%


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; struct hid_field *field = hi->report->field[0]; int ret; if (hi->report->id == td->mt_report_id) { ret = mt_touch_input_configured(hdev, hi); if (ret) return ret; } /* * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" * for the stylus. Check this first, and then rely on the application * field. */ if (hi->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); } else { switch (field->application) { case HID_GD_KEYBOARD: suffix = "Keyboard"; break; case HID_GD_KEYPAD: suffix = "Keypad"; break; case HID_GD_MOUSE: suffix = "Mouse"; break; case HID_DG_STYLUS: suffix = "Pen"; /* force BTN_STYLUS to allow tablet matching in udev */ __set_bit(BTN_STYLUS, hi->input->keybit); break; case HID_DG_TOUCHSCREEN: /* we do not set suffix = "Touchscreen" */ break; case HID_DG_TOUCHPAD: suffix = "Touchpad"; break; case HID_GD_SYSTEM_CONTROL: suffix = "System Control"; break; case HID_CP_CONSUMER_CONTROL: suffix = "Consumer Control"; break; case HID_GD_WIRELESS_RADIO_CTLS: suffix = "Wireless Radio Control"; 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; }

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PersonTokensPropCommitsCommitProp
Benjamin Tissoires20069.44%753.85%
Henrik Rydberg4615.97%215.38%
Dmitry Torokhov186.25%17.69%
João Paulo Rechi Vita165.56%215.38%
Mika Westerberg82.78%17.69%
Total288100.00%13100.00%


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; }

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Benjamin Tissoires51100.00%1100.00%
Total51100.00%1100.00%


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); } }

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Benjamin Tissoires81100.00%1100.00%
Total81100.00%1100.00%


static void mt_release_contacts(struct hid_device *hid) { struct hid_input *hidinput; 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); } } td->num_received = 0; }

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Benjamin Tissoires112100.00%1100.00%
Total112100.00%1100.00%


static void mt_expired_timeout(unsigned long arg) { struct hid_device *hdev = (void *)arg; struct mt_device *td = hid_get_drvdata(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); }

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Benjamin Tissoires72100.00%2100.00%
Total72100.00%2100.00%


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 */ 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->mtclass = *mtclass; td->inputmode = -1; td->maxcontact_report_id = -1; td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; td->cc_index = -1; td->mt_report_id = -1; hid_set_drvdata(hdev, td); td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields), GFP_KERNEL); if (!td->fields) { dev_err(&hdev->dev, "cannot allocate multitouch fields data\n"); return -ENOMEM; } if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) td->serial_maybe = true; /* * Store the initial quirk state */ td->initial_quirks = hdev->quirks; /* 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 reports on the same HID * device. */ hdev->quirks |= HID_QUIRK_MULTI_INPUT; hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT; /* * Some multitouch screens do not like to be polled for input * reports. Fortunately, the Win8 spec says that all touches * should be sent during each report, making the initialization * of input reports unnecessary. For Win7 devices, well, let's hope * they will still be happy (this is only be a problem if a touch * was already there while probing the device). * * In addition some touchpads do not behave well if we read * all feature reports from them. Instead we prevent * initial report fetching and then selectively fetch each * report we are interested in. */ hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; setup_timer(&td->release_timer, mt_expired_timeout, (long)hdev); 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_maxcontacts(hdev); mt_set_input_mode(hdev); /* release .fields memory as it is not used anymore */ devm_kfree(&hdev->dev, td->fields); td->fields = NULL; return 0; }

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Benjamin Tissoires35289.80%1280.00%
Henrik Rydberg205.10%16.67%
Nicholas Krause184.59%16.67%
Andrew Duggan20.51%16.67%
Total392100.00%15100.00%

#ifdef CONFIG_PM
static int mt_reset_resume(struct hid_device *hdev) { mt_release_contacts(hdev); mt_set_maxcontacts(hdev); mt_set_input_mode(hdev); return 0; }

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Benjamin Tissoires2482.76%266.67%
Benson Leung517.24%133.33%
Total29100.00%3100.00%


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; }

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Scott Liu2388.46%150.00%
Benjamin Tissoires311.54%150.00%
Total26100.00%2100.00%

#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); hdev->quirks = td->initial_quirks; }

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Benjamin Tissoires55100.00%5100.00%
Total55100.00%5100.00%

/* * 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) }, /* 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) }, /* 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) }, /* 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) }, /* 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) }, /* 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);

Overall Contributors

PersonTokensPropCommitsCommitProp
Benjamin Tissoires547473.64%8459.15%
Henrik Rydberg3564.79%64.23%
João Paulo Rechi Vita2012.70%21.41%
Mika Westerberg1662.23%21.41%
Mathieu Magnaudet1181.59%21.41%
Masatoshi Hoshikawa1091.47%10.70%
Allen Hung811.09%10.70%
Masaki Ota801.08%10.70%
Luosong720.97%10.70%
Seth Forshee660.89%10.70%
Jiri Kosina560.75%74.93%
Aaron Tian540.73%10.70%
Xianhan Yu490.66%10.70%
Denis Kovalev480.65%10.70%
Wei-Ning Huang410.55%10.70%
Dmitry Torokhov390.52%21.41%
Richard Nauber360.48%10.70%
Brent Adam360.48%10.70%
Austin Zhang330.44%21.41%
Yang Bo290.39%10.70%
HungNien Chen290.39%10.70%
Scott Liu280.38%10.70%
Andy Shevchenko270.36%10.70%
Andrew Duggan250.34%10.70%
Stephane Chatty200.27%10.70%
Pavel Tatashin190.26%10.70%
Nicholas Krause180.24%10.70%
Tomas Sokorai150.20%10.70%
KaiChung Cheng150.20%10.70%
ice chien130.17%10.70%
Austin Hendrix130.17%10.70%
Thierry Reding120.16%10.70%
Andreas Nielsen110.15%10.70%
Jeff Brown100.13%10.70%
Chris Bagwell80.11%10.70%
Hans de Goede60.08%10.70%
John Sung60.08%10.70%
Benson Leung50.07%10.70%
Marek Vašut30.04%10.70%
Geliang Tang20.03%10.70%
H Hartley Sweeten20.03%10.70%
Arvind Yadav10.01%10.70%
Alan Cox10.01%10.70%
Total7433100.00%142100.00%
Directory: drivers/hid
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