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2201 lines
61 KiB
2201 lines
61 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* HID driver for multitouch panels |
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* |
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* Copyright (c) 2010-2012 Stephane Chatty <[email protected]> |
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* Copyright (c) 2010-2013 Benjamin Tissoires <[email protected]> |
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* Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France |
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* Copyright (c) 2012-2013 Red Hat, Inc |
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* |
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* This code is partly based on hid-egalax.c: |
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* |
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* Copyright (c) 2010 Stephane Chatty <[email protected]> |
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* Copyright (c) 2010 Henrik Rydberg <[email protected]> |
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* Copyright (c) 2010 Canonical, Ltd. |
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* |
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* This code is partly based on hid-3m-pct.c: |
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* |
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* Copyright (c) 2009-2010 Stephane Chatty <[email protected]> |
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* Copyright (c) 2010 Henrik Rydberg <[email protected]> |
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* Copyright (c) 2010 Canonical, Ltd. |
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*/ |
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|
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/* |
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*/ |
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|
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/* |
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* This driver is regularly tested thanks to the test suite in hid-tools[1]. |
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* Please run these regression tests before patching this module so that |
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* your patch won't break existing known devices. |
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* |
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* [1] https://gitlab.freedesktop.org/libevdev/hid-tools |
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*/ |
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#include <linux/device.h> |
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#include <linux/hid.h> |
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#include <linux/module.h> |
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#include <linux/slab.h> |
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#include <linux/input/mt.h> |
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#include <linux/jiffies.h> |
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#include <linux/string.h> |
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#include <linux/timer.h> |
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MODULE_AUTHOR("Stephane Chatty <[email protected]>"); |
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MODULE_AUTHOR("Benjamin Tissoires <[email protected]>"); |
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MODULE_DESCRIPTION("HID multitouch panels"); |
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MODULE_LICENSE("GPL"); |
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#include "hid-ids.h" |
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/* quirks to control the device */ |
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#define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0) |
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#define MT_QUIRK_SLOT_IS_CONTACTID BIT(1) |
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#define MT_QUIRK_CYPRESS BIT(2) |
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#define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3) |
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#define MT_QUIRK_ALWAYS_VALID BIT(4) |
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#define MT_QUIRK_VALID_IS_INRANGE BIT(5) |
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#define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6) |
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#define MT_QUIRK_CONFIDENCE BIT(7) |
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#define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8) |
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#define MT_QUIRK_NO_AREA BIT(9) |
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#define MT_QUIRK_IGNORE_DUPLICATES BIT(10) |
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#define MT_QUIRK_HOVERING BIT(11) |
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#define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12) |
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#define MT_QUIRK_FORCE_GET_FEATURE BIT(13) |
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#define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14) |
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#define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15) |
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#define MT_QUIRK_STICKY_FINGERS BIT(16) |
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#define MT_QUIRK_ASUS_CUSTOM_UP BIT(17) |
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#define MT_QUIRK_WIN8_PTP_BUTTONS BIT(18) |
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#define MT_QUIRK_SEPARATE_APP_REPORT BIT(19) |
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#define MT_QUIRK_FORCE_MULTI_INPUT BIT(20) |
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#define MT_QUIRK_DISABLE_WAKEUP BIT(21) |
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#define MT_INPUTMODE_TOUCHSCREEN 0x02 |
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#define MT_INPUTMODE_TOUCHPAD 0x03 |
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#define MT_BUTTONTYPE_CLICKPAD 0 |
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enum latency_mode { |
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HID_LATENCY_NORMAL = 0, |
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HID_LATENCY_HIGH = 1, |
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}; |
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#define MT_IO_FLAGS_RUNNING 0 |
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#define MT_IO_FLAGS_ACTIVE_SLOTS 1 |
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#define MT_IO_FLAGS_PENDING_SLOTS 2 |
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static const bool mtrue = true; /* default for true */ |
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static const bool mfalse; /* default for false */ |
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static const __s32 mzero; /* default for 0 */ |
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#define DEFAULT_TRUE ((void *)&mtrue) |
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#define DEFAULT_FALSE ((void *)&mfalse) |
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#define DEFAULT_ZERO ((void *)&mzero) |
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struct mt_usages { |
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struct list_head list; |
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__s32 *x, *y, *cx, *cy, *p, *w, *h, *a; |
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__s32 *contactid; /* the device ContactID assigned to this slot */ |
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bool *tip_state; /* is the touch valid? */ |
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bool *inrange_state; /* is the finger in proximity of the sensor? */ |
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bool *confidence_state; /* is the touch made by a finger? */ |
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}; |
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struct mt_application { |
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struct list_head list; |
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unsigned int application; |
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unsigned int report_id; |
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struct list_head mt_usages; /* mt usages list */ |
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__s32 quirks; |
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__s32 *scantime; /* scantime reported */ |
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__s32 scantime_logical_max; /* max value for raw scantime */ |
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__s32 *raw_cc; /* contact count in the report */ |
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int left_button_state; /* left button state */ |
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unsigned int mt_flags; /* flags to pass to input-mt */ |
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unsigned long *pending_palm_slots; /* slots where we reported palm |
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* and need to release */ |
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__u8 num_received; /* how many contacts we received */ |
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__u8 num_expected; /* expected last contact index */ |
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__u8 buttons_count; /* number of physical buttons per touchpad */ |
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__u8 touches_by_report; /* how many touches are present in one report: |
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* 1 means we should use a serial protocol |
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* > 1 means hybrid (multitouch) protocol |
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*/ |
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__s32 dev_time; /* the scan time provided by the device */ |
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unsigned long jiffies; /* the frame's jiffies */ |
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int timestamp; /* the timestamp to be sent */ |
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int prev_scantime; /* scantime reported previously */ |
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bool have_contact_count; |
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}; |
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struct mt_class { |
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__s32 name; /* MT_CLS */ |
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__s32 quirks; |
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__s32 sn_move; /* Signal/noise ratio for move events */ |
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__s32 sn_width; /* Signal/noise ratio for width events */ |
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__s32 sn_height; /* Signal/noise ratio for height events */ |
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__s32 sn_pressure; /* Signal/noise ratio for pressure events */ |
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__u8 maxcontacts; |
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bool is_indirect; /* true for touchpads */ |
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bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */ |
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}; |
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struct mt_report_data { |
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struct list_head list; |
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struct hid_report *report; |
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struct mt_application *application; |
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bool is_mt_collection; |
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}; |
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struct mt_device { |
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struct mt_class mtclass; /* our mt device class */ |
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struct timer_list release_timer; /* to release sticky fingers */ |
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struct hid_device *hdev; /* hid_device we're attached to */ |
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unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */ |
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__u8 inputmode_value; /* InputMode HID feature value */ |
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__u8 maxcontacts; |
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bool is_buttonpad; /* is this device a button pad? */ |
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bool serial_maybe; /* need to check for serial protocol */ |
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struct list_head applications; |
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struct list_head reports; |
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}; |
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static void mt_post_parse_default_settings(struct mt_device *td, |
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struct mt_application *app); |
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static void mt_post_parse(struct mt_device *td, struct mt_application *app); |
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/* classes of device behavior */ |
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#define MT_CLS_DEFAULT 0x0001 |
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#define MT_CLS_SERIAL 0x0002 |
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#define MT_CLS_CONFIDENCE 0x0003 |
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#define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004 |
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#define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005 |
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#define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006 |
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#define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 |
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/* reserved 0x0008 */ |
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#define MT_CLS_INRANGE_CONTACTNUMBER 0x0009 |
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#define MT_CLS_NSMU 0x000a |
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/* reserved 0x0010 */ |
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/* reserved 0x0011 */ |
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#define MT_CLS_WIN_8 0x0012 |
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#define MT_CLS_EXPORT_ALL_INPUTS 0x0013 |
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/* reserved 0x0014 */ |
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#define MT_CLS_WIN_8_FORCE_MULTI_INPUT 0x0015 |
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#define MT_CLS_WIN_8_DISABLE_WAKEUP 0x0016 |
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/* vendor specific classes */ |
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#define MT_CLS_3M 0x0101 |
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/* reserved 0x0102 */ |
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#define MT_CLS_EGALAX 0x0103 |
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#define MT_CLS_EGALAX_SERIAL 0x0104 |
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#define MT_CLS_TOPSEED 0x0105 |
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#define MT_CLS_PANASONIC 0x0106 |
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#define MT_CLS_FLATFROG 0x0107 |
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#define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108 |
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#define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109 |
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#define MT_CLS_LG 0x010a |
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#define MT_CLS_ASUS 0x010b |
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#define MT_CLS_VTL 0x0110 |
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#define MT_CLS_GOOGLE 0x0111 |
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#define MT_CLS_RAZER_BLADE_STEALTH 0x0112 |
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#define MT_CLS_SMART_TECH 0x0113 |
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#define MT_DEFAULT_MAXCONTACT 10 |
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#define MT_MAX_MAXCONTACT 250 |
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/* |
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* Resync device and local timestamps after that many microseconds without |
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* receiving data. |
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*/ |
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#define MAX_TIMESTAMP_INTERVAL 1000000 |
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#define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p) |
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#define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p) |
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/* |
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* these device-dependent functions determine what slot corresponds |
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* to a valid contact that was just read. |
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*/ |
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static int cypress_compute_slot(struct mt_application *application, |
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struct mt_usages *slot) |
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{ |
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if (*slot->contactid != 0 || application->num_received == 0) |
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return *slot->contactid; |
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else |
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return -1; |
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} |
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static const struct mt_class mt_classes[] = { |
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{ .name = MT_CLS_DEFAULT, |
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.quirks = MT_QUIRK_ALWAYS_VALID | |
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MT_QUIRK_CONTACT_CNT_ACCURATE }, |
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{ .name = MT_CLS_NSMU, |
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.quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, |
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{ .name = MT_CLS_SERIAL, |
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.quirks = MT_QUIRK_ALWAYS_VALID}, |
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{ .name = MT_CLS_CONFIDENCE, |
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.quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, |
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{ .name = MT_CLS_CONFIDENCE_CONTACT_ID, |
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.quirks = MT_QUIRK_VALID_IS_CONFIDENCE | |
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MT_QUIRK_SLOT_IS_CONTACTID }, |
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{ .name = MT_CLS_CONFIDENCE_MINUS_ONE, |
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.quirks = MT_QUIRK_VALID_IS_CONFIDENCE | |
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MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, |
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{ .name = MT_CLS_DUAL_INRANGE_CONTACTID, |
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.quirks = MT_QUIRK_VALID_IS_INRANGE | |
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MT_QUIRK_SLOT_IS_CONTACTID, |
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.maxcontacts = 2 }, |
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{ .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, |
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.quirks = MT_QUIRK_VALID_IS_INRANGE | |
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MT_QUIRK_SLOT_IS_CONTACTNUMBER, |
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.maxcontacts = 2 }, |
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{ .name = MT_CLS_INRANGE_CONTACTNUMBER, |
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.quirks = MT_QUIRK_VALID_IS_INRANGE | |
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MT_QUIRK_SLOT_IS_CONTACTNUMBER }, |
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{ .name = MT_CLS_WIN_8, |
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.quirks = MT_QUIRK_ALWAYS_VALID | |
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MT_QUIRK_IGNORE_DUPLICATES | |
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MT_QUIRK_HOVERING | |
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MT_QUIRK_CONTACT_CNT_ACCURATE | |
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MT_QUIRK_STICKY_FINGERS | |
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MT_QUIRK_WIN8_PTP_BUTTONS, |
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.export_all_inputs = true }, |
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{ .name = MT_CLS_EXPORT_ALL_INPUTS, |
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.quirks = MT_QUIRK_ALWAYS_VALID | |
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MT_QUIRK_CONTACT_CNT_ACCURATE, |
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.export_all_inputs = true }, |
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{ .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT, |
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.quirks = MT_QUIRK_ALWAYS_VALID | |
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MT_QUIRK_IGNORE_DUPLICATES | |
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MT_QUIRK_HOVERING | |
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MT_QUIRK_CONTACT_CNT_ACCURATE | |
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MT_QUIRK_STICKY_FINGERS | |
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MT_QUIRK_WIN8_PTP_BUTTONS | |
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MT_QUIRK_FORCE_MULTI_INPUT, |
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.export_all_inputs = true }, |
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{ .name = MT_CLS_WIN_8_DISABLE_WAKEUP, |
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.quirks = MT_QUIRK_ALWAYS_VALID | |
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MT_QUIRK_IGNORE_DUPLICATES | |
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MT_QUIRK_HOVERING | |
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MT_QUIRK_CONTACT_CNT_ACCURATE | |
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MT_QUIRK_STICKY_FINGERS | |
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MT_QUIRK_WIN8_PTP_BUTTONS | |
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MT_QUIRK_DISABLE_WAKEUP, |
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.export_all_inputs = true }, |
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/* |
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* vendor specific classes |
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*/ |
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{ .name = MT_CLS_3M, |
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.quirks = MT_QUIRK_VALID_IS_CONFIDENCE | |
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MT_QUIRK_SLOT_IS_CONTACTID | |
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MT_QUIRK_TOUCH_SIZE_SCALING, |
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.sn_move = 2048, |
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.sn_width = 128, |
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.sn_height = 128, |
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.maxcontacts = 60, |
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}, |
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{ .name = MT_CLS_EGALAX, |
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.quirks = MT_QUIRK_SLOT_IS_CONTACTID | |
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MT_QUIRK_VALID_IS_INRANGE, |
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.sn_move = 4096, |
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.sn_pressure = 32, |
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}, |
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{ .name = MT_CLS_EGALAX_SERIAL, |
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.quirks = MT_QUIRK_SLOT_IS_CONTACTID | |
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MT_QUIRK_ALWAYS_VALID, |
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.sn_move = 4096, |
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.sn_pressure = 32, |
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}, |
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{ .name = MT_CLS_TOPSEED, |
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.quirks = MT_QUIRK_ALWAYS_VALID, |
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.is_indirect = true, |
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.maxcontacts = 2, |
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}, |
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{ .name = MT_CLS_PANASONIC, |
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.quirks = MT_QUIRK_NOT_SEEN_MEANS_UP, |
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.maxcontacts = 4 }, |
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{ .name = MT_CLS_GENERALTOUCH_TWOFINGERS, |
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.quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | |
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MT_QUIRK_VALID_IS_INRANGE | |
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MT_QUIRK_SLOT_IS_CONTACTID, |
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.maxcontacts = 2 |
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}, |
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{ .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS, |
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.quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | |
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MT_QUIRK_SLOT_IS_CONTACTID |
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}, |
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{ .name = MT_CLS_FLATFROG, |
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.quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | |
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MT_QUIRK_NO_AREA, |
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.sn_move = 2048, |
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.maxcontacts = 40, |
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}, |
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{ .name = MT_CLS_LG, |
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.quirks = MT_QUIRK_ALWAYS_VALID | |
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MT_QUIRK_FIX_CONST_CONTACT_ID | |
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MT_QUIRK_IGNORE_DUPLICATES | |
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MT_QUIRK_HOVERING | |
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MT_QUIRK_CONTACT_CNT_ACCURATE }, |
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{ .name = MT_CLS_ASUS, |
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.quirks = MT_QUIRK_ALWAYS_VALID | |
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MT_QUIRK_CONTACT_CNT_ACCURATE | |
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MT_QUIRK_ASUS_CUSTOM_UP }, |
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{ .name = MT_CLS_VTL, |
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.quirks = MT_QUIRK_ALWAYS_VALID | |
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MT_QUIRK_CONTACT_CNT_ACCURATE | |
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MT_QUIRK_FORCE_GET_FEATURE, |
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}, |
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{ .name = MT_CLS_GOOGLE, |
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.quirks = MT_QUIRK_ALWAYS_VALID | |
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MT_QUIRK_CONTACT_CNT_ACCURATE | |
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MT_QUIRK_SLOT_IS_CONTACTID | |
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MT_QUIRK_HOVERING |
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}, |
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{ .name = MT_CLS_RAZER_BLADE_STEALTH, |
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.quirks = MT_QUIRK_ALWAYS_VALID | |
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MT_QUIRK_IGNORE_DUPLICATES | |
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MT_QUIRK_HOVERING | |
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MT_QUIRK_CONTACT_CNT_ACCURATE | |
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MT_QUIRK_WIN8_PTP_BUTTONS, |
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}, |
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{ .name = MT_CLS_SMART_TECH, |
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.quirks = MT_QUIRK_ALWAYS_VALID | |
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MT_QUIRK_IGNORE_DUPLICATES | |
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MT_QUIRK_CONTACT_CNT_ACCURATE | |
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MT_QUIRK_SEPARATE_APP_REPORT, |
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}, |
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{ } |
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}; |
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static ssize_t mt_show_quirks(struct device *dev, |
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struct device_attribute *attr, |
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char *buf) |
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{ |
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struct hid_device *hdev = to_hid_device(dev); |
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struct mt_device *td = hid_get_drvdata(hdev); |
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return sprintf(buf, "%u\n", td->mtclass.quirks); |
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} |
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static ssize_t mt_set_quirks(struct device *dev, |
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struct device_attribute *attr, |
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const char *buf, size_t count) |
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{ |
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struct hid_device *hdev = to_hid_device(dev); |
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struct mt_device *td = hid_get_drvdata(hdev); |
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struct mt_application *application; |
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unsigned long val; |
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if (kstrtoul(buf, 0, &val)) |
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return -EINVAL; |
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td->mtclass.quirks = val; |
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list_for_each_entry(application, &td->applications, list) { |
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application->quirks = val; |
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if (!application->have_contact_count) |
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application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; |
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} |
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return count; |
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} |
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static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); |
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|
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static struct attribute *sysfs_attrs[] = { |
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&dev_attr_quirks.attr, |
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NULL |
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}; |
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static const struct attribute_group mt_attribute_group = { |
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.attrs = sysfs_attrs |
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}; |
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static void mt_get_feature(struct hid_device *hdev, struct hid_report *report) |
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{ |
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int ret; |
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u32 size = hid_report_len(report); |
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u8 *buf; |
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/* |
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* Do not fetch the feature report if the device has been explicitly |
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* marked as non-capable. |
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*/ |
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if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS) |
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return; |
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buf = hid_alloc_report_buf(report, GFP_KERNEL); |
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if (!buf) |
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return; |
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ret = hid_hw_raw_request(hdev, report->id, buf, size, |
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HID_FEATURE_REPORT, HID_REQ_GET_REPORT); |
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if (ret < 0) { |
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dev_warn(&hdev->dev, "failed to fetch feature %d\n", |
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report->id); |
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} else { |
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ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf, |
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size, 0); |
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if (ret) |
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dev_warn(&hdev->dev, "failed to report feature\n"); |
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} |
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kfree(buf); |
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} |
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static void mt_feature_mapping(struct hid_device *hdev, |
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struct hid_field *field, struct hid_usage *usage) |
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{ |
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struct mt_device *td = hid_get_drvdata(hdev); |
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|
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switch (usage->hid) { |
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case HID_DG_CONTACTMAX: |
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mt_get_feature(hdev, field->report); |
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|
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td->maxcontacts = field->value[0]; |
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if (!td->maxcontacts && |
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field->logical_maximum <= MT_MAX_MAXCONTACT) |
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td->maxcontacts = field->logical_maximum; |
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if (td->mtclass.maxcontacts) |
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/* check if the maxcontacts is given by the class */ |
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td->maxcontacts = td->mtclass.maxcontacts; |
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|
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break; |
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case HID_DG_BUTTONTYPE: |
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if (usage->usage_index >= field->report_count) { |
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dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n"); |
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break; |
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} |
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|
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mt_get_feature(hdev, field->report); |
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if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD) |
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td->is_buttonpad = true; |
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|
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break; |
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case 0xff0000c5: |
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/* Retrieve the Win8 blob once to enable some devices */ |
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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, |
|
struct hid_report *report) |
|
{ |
|
unsigned int application = report->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; |
|
mt_application->report_id = report->id; |
|
|
|
list_add_tail(&mt_application->list, &td->applications); |
|
|
|
return mt_application; |
|
} |
|
|
|
static struct mt_application *mt_find_application(struct mt_device *td, |
|
struct hid_report *report) |
|
{ |
|
unsigned int application = report->application; |
|
struct mt_application *tmp, *mt_application = NULL; |
|
|
|
list_for_each_entry(tmp, &td->applications, list) { |
|
if (application == tmp->application) { |
|
if (!(td->mtclass.quirks & MT_QUIRK_SEPARATE_APP_REPORT) || |
|
tmp->report_id == report->id) { |
|
mt_application = tmp; |
|
break; |
|
} |
|
} |
|
} |
|
|
|
if (!mt_application) |
|
mt_application = mt_allocate_application(td, report); |
|
|
|
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); |
|
|
|
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; |
|
|
|
if (field->logical == HID_DG_FINGER || td->hdev->group != HID_GROUP_MULTITOUCH_WIN_8) { |
|
for (n = 0; n < field->report_count; n++) { |
|
if (field->usage[n].hid == HID_DG_CONTACTID) { |
|
rdata->is_mt_collection = true; |
|
break; |
|
} |
|
} |
|
} |
|
} |
|
|
|
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) { |
|
if (usage->contactid == DEFAULT_ZERO || |
|
usage->x == DEFAULT_ZERO || |
|
usage->y == DEFAULT_ZERO) { |
|
hid_dbg(hdev, |
|
"ignoring duplicate usage on incomplete"); |
|
return; |
|
} |
|
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_FORCE_MULTI_INPUT || |
|
cls->name == MT_CLS_WIN_8_DISABLE_WAKEUP) && |
|
(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); |
|
if (!*bit) |
|
return -1; |
|
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_inactive(input); |
|
|
|
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 && mt && |
|
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); |
|
|
|
/* |
|
* some egalax touchscreens have "application == DG_TOUCHSCREEN" |
|
* for the stylus. Overwrite the hid_input application |
|
*/ |
|
if (field->physical == HID_DG_STYLUS) |
|
hi->application = HID_DG_STYLUS; |
|
|
|
/* 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; |
|
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) { |
|
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; |
|
} |
|
} |
|
|
|
switch (hi->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_VD_ASUS_CUSTOM_MEDIA_KEYS: |
|
suffix = "Custom Media Keys"; |
|
break; |
|
case HID_DG_STYLUS: |
|
/* force BTN_STYLUS to allow tablet matching in udev */ |
|
__set_bit(BTN_STYLUS, hi->input->keybit); |
|
fallthrough; |
|
case HID_DG_PEN: |
|
suffix = "Stylus"; |
|
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_inactive(input_dev); |
|
} |
|
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; |
|
|
|
if (mtclass->quirks & MT_QUIRK_FORCE_MULTI_INPUT) { |
|
hdev->quirks &= ~HID_QUIRK_INPUT_PER_APP; |
|
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_suspend(struct hid_device *hdev, pm_message_t state) |
|
{ |
|
struct mt_device *td = hid_get_drvdata(hdev); |
|
|
|
/* High latency is desirable for power savings during S3/S0ix */ |
|
if ((td->mtclass.quirks & MT_QUIRK_DISABLE_WAKEUP) || |
|
!hid_hw_may_wakeup(hdev)) |
|
mt_set_modes(hdev, HID_LATENCY_HIGH, false, false); |
|
else |
|
mt_set_modes(hdev, HID_LATENCY_HIGH, true, true); |
|
|
|
return 0; |
|
} |
|
|
|
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); |
|
|
|
mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); |
|
|
|
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) }, |
|
|
|
/* Anton devices */ |
|
{ .driver_data = MT_CLS_EXPORT_ALL_INPUTS, |
|
MT_USB_DEVICE(USB_VENDOR_ID_ANTON, |
|
USB_DEVICE_ID_ANTON_TOUCH_PAD) }, |
|
|
|
/* Asus T101HA */ |
|
{ .driver_data = MT_CLS_WIN_8_DISABLE_WAKEUP, |
|
HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, |
|
USB_VENDOR_ID_ASUSTEK, |
|
USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD) }, |
|
|
|
/* 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) }, |
|
{ .driver_data = MT_CLS_EGALAX, |
|
MT_USB_DEVICE(USB_VENDOR_ID_DWAV, |
|
USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002) }, |
|
|
|
/* Elan devices */ |
|
{ .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, |
|
HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, |
|
USB_VENDOR_ID_ELAN, 0x313a) }, |
|
|
|
/* 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) }, |
|
{ .driver_data = MT_CLS_LG, |
|
HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC, |
|
USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_7010) }, |
|
|
|
/* Lenovo X1 TAB Gen 2 */ |
|
{ .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, |
|
HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, |
|
USB_VENDOR_ID_LENOVO, |
|
USB_DEVICE_ID_LENOVO_X1_TAB) }, |
|
|
|
/* Lenovo X1 TAB Gen 3 */ |
|
{ .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, |
|
HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, |
|
USB_VENDOR_ID_LENOVO, |
|
USB_DEVICE_ID_LENOVO_X1_TAB3) }, |
|
|
|
/* 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) }, |
|
|
|
/* Smart Tech panels */ |
|
{ .driver_data = MT_CLS_SMART_TECH, |
|
MT_USB_DEVICE(0x0b8c, 0x0092)}, |
|
|
|
/* Stantum panels */ |
|
{ .driver_data = MT_CLS_CONFIDENCE, |
|
MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, |
|
USB_DEVICE_ID_MTP_STM)}, |
|
|
|
/* Synaptics devices */ |
|
{ .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, |
|
HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, |
|
USB_VENDOR_ID_SYNAPTICS, 0xce08) }, |
|
|
|
{ .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT, |
|
HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, |
|
USB_VENDOR_ID_SYNAPTICS, 0xce09) }, |
|
|
|
/* 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 |
|
.suspend = mt_suspend, |
|
.reset_resume = mt_reset_resume, |
|
.resume = mt_resume, |
|
#endif |
|
}; |
|
module_hid_driver(mt_driver);
|
|
|