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tmp_suning_uos_patched/drivers/hid/wacom_wac.h
Jason Gerecke 8fc5e3c7ca HID: wacom: Use "Confidence" flag to prevent reporting invalid contacts 
commit 7fb0413baa7f8a04caef0c504df9af7e0623d296 upstream.

The HID descriptor of many of Wacom's touch input devices include a
"Confidence" usage that signals if a particular touch collection contains
useful data. The driver does not look at this flag, however, which causes
even invalid contacts to be reported to userspace. A lucky combination of
kernel event filtering and device behavior (specifically: contact ID 0 ==
invalid, contact ID >0 == valid; and order all data so that all valid
contacts are reported before any invalid contacts) spare most devices from
any visibly-bad behavior.

The DTH-2452 is one example of an unlucky device that misbehaves. It uses
ID 0 for both the first valid contact and all invalid contacts. Because
we report both the valid and invalid contacts, the kernel reports that
contact 0 first goes down (valid) and then goes up (invalid) in every
report. This causes ~100 clicks per second simply by touching the screen.

This patch inroduces new `confidence` flag in our `hid_data` structure.
The value is initially set to `true` at the start of a report and can be
set to `false` if an invalid touch usage is seen.

Link: https://github.com/linuxwacom/input-wacom/issues/270
Fixes: f8b6a74719 ("HID: wacom: generic: Support multiple tools per report")
Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Tested-by: Joshua Dickens <joshua.dickens@wacom.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-01 09:19:00 +01:00

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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* drivers/input/tablet/wacom_wac.h
*/
#ifndef WACOM_WAC_H
#define WACOM_WAC_H
#include <linux/types.h>
#include <linux/hid.h>
#include <linux/kfifo.h>
/* maximum packet length for USB/BT devices */
#define WACOM_PKGLEN_MAX 361
#define WACOM_NAME_MAX 64
#define WACOM_MAX_REMOTES 5
#define WACOM_STATUS_UNKNOWN 255
/* packet length for individual models */
#define WACOM_PKGLEN_BBFUN 9
#define WACOM_PKGLEN_TPC1FG 5
#define WACOM_PKGLEN_TPC1FG_B 10
#define WACOM_PKGLEN_TPC2FG 14
#define WACOM_PKGLEN_BBTOUCH 20
#define WACOM_PKGLEN_BBTOUCH3 64
#define WACOM_PKGLEN_BBPEN 10
#define WACOM_PKGLEN_WIRELESS 32
#define WACOM_PKGLEN_PENABLED 8
#define WACOM_PKGLEN_BPAD_TOUCH 32
#define WACOM_PKGLEN_BPAD_TOUCH_USB 64
/* wacom data size per MT contact */
#define WACOM_BYTES_PER_MT_PACKET 11
#define WACOM_BYTES_PER_24HDT_PACKET 14
#define WACOM_BYTES_PER_QHDTHID_PACKET 6
/* device IDs */
#define STYLUS_DEVICE_ID 0x02
#define TOUCH_DEVICE_ID 0x03
#define CURSOR_DEVICE_ID 0x06
#define ERASER_DEVICE_ID 0x0A
#define PAD_DEVICE_ID 0x0F
/* wacom data packet report IDs */
#define WACOM_REPORT_PENABLED 2
#define WACOM_REPORT_PENABLED_BT 3
#define WACOM_REPORT_INTUOS_ID1 5
#define WACOM_REPORT_INTUOS_ID2 6
#define WACOM_REPORT_INTUOSPAD 12
#define WACOM_REPORT_INTUOS5PAD 3
#define WACOM_REPORT_DTUSPAD 21
#define WACOM_REPORT_TPC1FG 6
#define WACOM_REPORT_TPC2FG 13
#define WACOM_REPORT_TPCMT 13
#define WACOM_REPORT_TPCMT2 3
#define WACOM_REPORT_TPCHID 15
#define WACOM_REPORT_CINTIQ 16
#define WACOM_REPORT_CINTIQPAD 17
#define WACOM_REPORT_TPCST 16
#define WACOM_REPORT_DTUS 17
#define WACOM_REPORT_TPC1FGE 18
#define WACOM_REPORT_24HDT 1
#define WACOM_REPORT_WL 128
#define WACOM_REPORT_USB 192
#define WACOM_REPORT_BPAD_PEN 3
#define WACOM_REPORT_BPAD_TOUCH 16
#define WACOM_REPORT_DEVICE_LIST 16
#define WACOM_REPORT_INTUOS_PEN 16
#define WACOM_REPORT_REMOTE 17
#define WACOM_REPORT_INTUOSHT2_ID 8
/* wacom command report ids */
#define WAC_CMD_WL_LED_CONTROL 0x03
#define WAC_CMD_LED_CONTROL 0x20
#define WAC_CMD_ICON_START 0x21
#define WAC_CMD_ICON_XFER 0x23
#define WAC_CMD_ICON_BT_XFER 0x26
#define WAC_CMD_DELETE_PAIRING 0x20
#define WAC_CMD_LED_CONTROL_GENERIC 0x32
#define WAC_CMD_UNPAIR_ALL 0xFF
#define WAC_CMD_WL_INTUOSP2 0x82
/* device quirks */
#define WACOM_QUIRK_BBTOUCH_LOWRES 0x0001
#define WACOM_QUIRK_SENSE 0x0002
#define WACOM_QUIRK_AESPEN 0x0004
#define WACOM_QUIRK_BATTERY 0x0008
#define WACOM_QUIRK_TOOLSERIAL 0x0010
/* device types */
#define WACOM_DEVICETYPE_NONE 0x0000
#define WACOM_DEVICETYPE_PEN 0x0001
#define WACOM_DEVICETYPE_TOUCH 0x0002
#define WACOM_DEVICETYPE_PAD 0x0004
#define WACOM_DEVICETYPE_WL_MONITOR 0x0008
#define WACOM_DEVICETYPE_DIRECT 0x0010
#define WACOM_POWER_SUPPLY_STATUS_AUTO -1
#define WACOM_HID_UP_WACOMDIGITIZER 0xff0d0000
#define WACOM_HID_SP_PAD 0x00040000
#define WACOM_HID_SP_BUTTON 0x00090000
#define WACOM_HID_SP_DIGITIZER 0x000d0000
#define WACOM_HID_SP_DIGITIZERINFO 0x00100000
#define WACOM_HID_WD_DIGITIZER (WACOM_HID_UP_WACOMDIGITIZER | 0x01)
#define WACOM_HID_WD_PEN (WACOM_HID_UP_WACOMDIGITIZER | 0x02)
#define WACOM_HID_WD_SENSE (WACOM_HID_UP_WACOMDIGITIZER | 0x36)
#define WACOM_HID_WD_DIGITIZERFNKEYS (WACOM_HID_UP_WACOMDIGITIZER | 0x39)
#define WACOM_HID_WD_SERIALNUMBER (WACOM_HID_UP_WACOMDIGITIZER | 0x5b)
#define WACOM_HID_WD_SERIALHI (WACOM_HID_UP_WACOMDIGITIZER | 0x5c)
#define WACOM_HID_WD_TOOLTYPE (WACOM_HID_UP_WACOMDIGITIZER | 0x77)
#define WACOM_HID_WD_DISTANCE (WACOM_HID_UP_WACOMDIGITIZER | 0x0132)
#define WACOM_HID_WD_TOUCHSTRIP (WACOM_HID_UP_WACOMDIGITIZER | 0x0136)
#define WACOM_HID_WD_TOUCHSTRIP2 (WACOM_HID_UP_WACOMDIGITIZER | 0x0137)
#define WACOM_HID_WD_TOUCHRING (WACOM_HID_UP_WACOMDIGITIZER | 0x0138)
#define WACOM_HID_WD_TOUCHRINGSTATUS (WACOM_HID_UP_WACOMDIGITIZER | 0x0139)
#define WACOM_HID_WD_REPORT_VALID (WACOM_HID_UP_WACOMDIGITIZER | 0x01d0)
#define WACOM_HID_WD_ACCELEROMETER_X (WACOM_HID_UP_WACOMDIGITIZER | 0x0401)
#define WACOM_HID_WD_ACCELEROMETER_Y (WACOM_HID_UP_WACOMDIGITIZER | 0x0402)
#define WACOM_HID_WD_ACCELEROMETER_Z (WACOM_HID_UP_WACOMDIGITIZER | 0x0403)
#define WACOM_HID_WD_BATTERY_CHARGING (WACOM_HID_UP_WACOMDIGITIZER | 0x0404)
#define WACOM_HID_WD_TOUCHONOFF (WACOM_HID_UP_WACOMDIGITIZER | 0x0454)
#define WACOM_HID_WD_BATTERY_LEVEL (WACOM_HID_UP_WACOMDIGITIZER | 0x043b)
#define WACOM_HID_WD_EXPRESSKEY00 (WACOM_HID_UP_WACOMDIGITIZER | 0x0910)
#define WACOM_HID_WD_EXPRESSKEYCAP00 (WACOM_HID_UP_WACOMDIGITIZER | 0x0940)
#define WACOM_HID_WD_MODE_CHANGE (WACOM_HID_UP_WACOMDIGITIZER | 0x0980)
#define WACOM_HID_WD_MUTE_DEVICE (WACOM_HID_UP_WACOMDIGITIZER | 0x0981)
#define WACOM_HID_WD_CONTROLPANEL (WACOM_HID_UP_WACOMDIGITIZER | 0x0982)
#define WACOM_HID_WD_ONSCREEN_KEYBOARD (WACOM_HID_UP_WACOMDIGITIZER | 0x0983)
#define WACOM_HID_WD_BUTTONCONFIG (WACOM_HID_UP_WACOMDIGITIZER | 0x0986)
#define WACOM_HID_WD_BUTTONHOME (WACOM_HID_UP_WACOMDIGITIZER | 0x0990)
#define WACOM_HID_WD_BUTTONUP (WACOM_HID_UP_WACOMDIGITIZER | 0x0991)
#define WACOM_HID_WD_BUTTONDOWN (WACOM_HID_UP_WACOMDIGITIZER | 0x0992)
#define WACOM_HID_WD_BUTTONLEFT (WACOM_HID_UP_WACOMDIGITIZER | 0x0993)
#define WACOM_HID_WD_BUTTONRIGHT (WACOM_HID_UP_WACOMDIGITIZER | 0x0994)
#define WACOM_HID_WD_BUTTONCENTER (WACOM_HID_UP_WACOMDIGITIZER | 0x0995)
#define WACOM_HID_WD_FINGERWHEEL (WACOM_HID_UP_WACOMDIGITIZER | 0x0d03)
#define WACOM_HID_WD_OFFSETLEFT (WACOM_HID_UP_WACOMDIGITIZER | 0x0d30)
#define WACOM_HID_WD_OFFSETTOP (WACOM_HID_UP_WACOMDIGITIZER | 0x0d31)
#define WACOM_HID_WD_OFFSETRIGHT (WACOM_HID_UP_WACOMDIGITIZER | 0x0d32)
#define WACOM_HID_WD_OFFSETBOTTOM (WACOM_HID_UP_WACOMDIGITIZER | 0x0d33)
#define WACOM_HID_WD_DATAMODE (WACOM_HID_UP_WACOMDIGITIZER | 0x1002)
#define WACOM_HID_WD_DIGITIZERINFO (WACOM_HID_UP_WACOMDIGITIZER | 0x1013)
#define WACOM_HID_WD_TOUCH_RING_SETTING (WACOM_HID_UP_WACOMDIGITIZER | 0x1032)
#define WACOM_HID_UP_G9 0xff090000
#define WACOM_HID_G9_PEN (WACOM_HID_UP_G9 | 0x02)
#define WACOM_HID_G9_TOUCHSCREEN (WACOM_HID_UP_G9 | 0x11)
#define WACOM_HID_UP_G11 0xff110000
#define WACOM_HID_G11_PEN (WACOM_HID_UP_G11 | 0x02)
#define WACOM_HID_G11_TOUCHSCREEN (WACOM_HID_UP_G11 | 0x11)
#define WACOM_HID_UP_WACOMTOUCH 0xff000000
#define WACOM_HID_WT_TOUCHSCREEN (WACOM_HID_UP_WACOMTOUCH | 0x04)
#define WACOM_HID_WT_TOUCHPAD (WACOM_HID_UP_WACOMTOUCH | 0x05)
#define WACOM_HID_WT_CONTACTMAX (WACOM_HID_UP_WACOMTOUCH | 0x55)
#define WACOM_HID_WT_SERIALNUMBER (WACOM_HID_UP_WACOMTOUCH | 0x5b)
#define WACOM_HID_WT_X (WACOM_HID_UP_WACOMTOUCH | 0x130)
#define WACOM_HID_WT_Y (WACOM_HID_UP_WACOMTOUCH | 0x131)
#define WACOM_HID_WT_REPORT_VALID (WACOM_HID_UP_WACOMTOUCH | 0x1d0)
#define WACOM_BATTERY_USAGE(f) (((f)->hid == HID_DG_BATTERYSTRENGTH) || \
((f)->hid == WACOM_HID_WD_BATTERY_CHARGING) || \
((f)->hid == WACOM_HID_WD_BATTERY_LEVEL))
#define WACOM_PAD_FIELD(f) (((f)->physical == HID_DG_TABLETFUNCTIONKEY) || \
((f)->physical == WACOM_HID_WD_DIGITIZERFNKEYS) || \
((f)->physical == WACOM_HID_WD_DIGITIZERINFO))
#define WACOM_PEN_FIELD(f) (((f)->logical == HID_DG_STYLUS) || \
((f)->physical == HID_DG_STYLUS) || \
((f)->physical == HID_DG_PEN) || \
((f)->application == HID_DG_PEN) || \
((f)->application == HID_DG_DIGITIZER) || \
((f)->application == WACOM_HID_WD_PEN) || \
((f)->application == WACOM_HID_WD_DIGITIZER) || \
((f)->application == WACOM_HID_G9_PEN) || \
((f)->application == WACOM_HID_G11_PEN))
#define WACOM_FINGER_FIELD(f) (((f)->logical == HID_DG_FINGER) || \
((f)->physical == HID_DG_FINGER) || \
((f)->application == HID_DG_TOUCHSCREEN) || \
((f)->application == WACOM_HID_G9_TOUCHSCREEN) || \
((f)->application == WACOM_HID_G11_TOUCHSCREEN) || \
((f)->application == WACOM_HID_WT_TOUCHPAD) || \
((f)->application == HID_DG_TOUCHPAD))
#define WACOM_DIRECT_DEVICE(f) (((f)->application == HID_DG_TOUCHSCREEN) || \
((f)->application == WACOM_HID_WT_TOUCHSCREEN) || \
((f)->application == HID_DG_PEN) || \
((f)->application == WACOM_HID_WD_PEN))
enum {
PENPARTNER = 0,
GRAPHIRE,
GRAPHIRE_BT,
WACOM_G4,
PTU,
PL,
DTU,
DTUS,
DTUSX,
INTUOS,
INTUOS3S,
INTUOS3,
INTUOS3L,
INTUOS4S,
INTUOS4,
INTUOS4WL,
INTUOS4L,
INTUOS5S,
INTUOS5,
INTUOS5L,
INTUOSPS,
INTUOSPM,
INTUOSPL,
INTUOSP2_BT,
INTUOSP2S_BT,
INTUOSHT3_BT,
WACOM_21UX2,
WACOM_22HD,
DTK,
WACOM_24HD,
WACOM_27QHD,
CINTIQ_HYBRID,
CINTIQ_COMPANION_2,
CINTIQ,
WACOM_BEE,
WACOM_13HD,
WACOM_MO,
BAMBOO_PEN,
INTUOSHT,
INTUOSHT2,
BAMBOO_TOUCH,
BAMBOO_PT,
WACOM_24HDT,
WACOM_27QHDT,
BAMBOO_PAD,
WIRELESS,
REMOTE,
TABLETPC, /* add new TPC below */
TABLETPCE,
TABLETPC2FG,
MTSCREEN,
MTTPC,
MTTPC_B,
HID_GENERIC,
MAX_TYPE
};
struct wacom_features {
const char *name;
int x_max;
int y_max;
int pressure_max;
int distance_max;
int type;
int x_resolution;
int y_resolution;
int numbered_buttons;
int offset_left;
int offset_right;
int offset_top;
int offset_bottom;
int device_type;
int x_phy;
int y_phy;
unsigned unit;
int unitExpo;
int x_fuzz;
int y_fuzz;
int pressure_fuzz;
int distance_fuzz;
int tilt_fuzz;
unsigned quirks;
unsigned touch_max;
int oVid;
int oPid;
int pktlen;
bool check_for_hid_type;
int hid_type;
};
struct wacom_shared {
bool stylus_in_proximity;
bool touch_down;
/* for wireless device to access USB interfaces */
unsigned touch_max;
int type;
struct input_dev *touch_input;
struct hid_device *pen;
struct hid_device *touch;
bool has_mute_touch_switch;
bool is_touch_on;
};
struct hid_data {
__s16 inputmode; /* InputMode HID feature, -1 if non-existent */
__s16 inputmode_index; /* InputMode HID feature index in the report */
bool sense_state;
bool inrange_state;
bool invert_state;
bool tipswitch;
bool barrelswitch;
bool barrelswitch2;
bool confidence;
int x;
int y;
int pressure;
int width;
int height;
int id;
int cc_report;
int cc_index;
int cc_value_index;
int last_slot_field;
int num_expected;
int num_received;
int bat_status;
int battery_capacity;
int bat_charging;
int bat_connected;
int ps_connected;
bool pad_input_event_flag;
};
struct wacom_remote_data {
struct {
u32 serial;
bool connected;
} remote[WACOM_MAX_REMOTES];
};
struct wacom_wac {
char name[WACOM_NAME_MAX];
char pen_name[WACOM_NAME_MAX];
char touch_name[WACOM_NAME_MAX];
char pad_name[WACOM_NAME_MAX];
unsigned char data[WACOM_PKGLEN_MAX];
int tool[2];
int id[2];
__u64 serial[2];
bool reporting_data;
struct wacom_features features;
struct wacom_shared *shared;
struct input_dev *pen_input;
struct input_dev *touch_input;
struct input_dev *pad_input;
struct kfifo_rec_ptr_2 *pen_fifo;
int pid;
int num_contacts_left;
u8 bt_features;
u8 bt_high_speed;
int mode_report;
int mode_value;
struct hid_data hid_data;
bool has_mute_touch_switch;
bool has_mode_change;
bool is_direct_mode;
bool is_invalid_bt_frame;
};
#endif
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