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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168/* SPDX-License-Identifier: GPL-2.0-only *//* * IBM TrackPoint PS/2 mouse driver * * Stephen Evanchik <evanchsa@gmail.com> */
#ifndef _TRACKPOINT_H#define _TRACKPOINT_H
/* * These constants are from the TrackPoint System * Engineering documentation Version 4 from IBM Watson * research: * http://wwwcssrv.almaden.ibm.com/trackpoint/download.html */
#define TP_COMMAND 0xE2 /* Commands start with this */
#define TP_READ_ID 0xE1 /* Sent for device identification */
/* * Valid first byte responses to the "Read Secondary ID" (0xE1) command. * 0x01 was the original IBM trackpoint, others implement very limited * subset of trackpoint features. */#define TP_VARIANT_IBM 0x01#define TP_VARIANT_ALPS 0x02#define TP_VARIANT_ELAN 0x03#define TP_VARIANT_NXP 0x04#define TP_VARIANT_JYT_SYNAPTICS 0x05#define TP_VARIANT_SYNAPTICS 0x06
/* * Commands */#define TP_RECALIB 0x51 /* Recalibrate */#define TP_POWER_DOWN 0x44 /* Can only be undone through HW reset */#define TP_EXT_DEV 0x21 /* Determines if external device is connected (RO) */#define TP_EXT_BTN 0x4B /* Read extended button status */#define TP_POR 0x7F /* Execute Power on Reset */#define TP_POR_RESULTS 0x25 /* Read Power on Self test results */#define TP_DISABLE_EXT 0x40 /* Disable external pointing device */#define TP_ENABLE_EXT 0x41 /* Enable external pointing device */
/* * Mode manipulation */#define TP_SET_SOFT_TRANS 0x4E /* Set mode */#define TP_CANCEL_SOFT_TRANS 0xB9 /* Cancel mode */#define TP_SET_HARD_TRANS 0x45 /* Mode can only be set */
/* * Register oriented commands/properties */#define TP_WRITE_MEM 0x81#define TP_READ_MEM 0x80 /* Not used in this implementation */
/** RAM Locations for properties */#define TP_SENS 0x4A /* Sensitivity */#define TP_MB 0x4C /* Read Middle Button Status (RO) */#define TP_INERTIA 0x4D /* Negative Inertia */#define TP_SPEED 0x60 /* Speed of TP Cursor */#define TP_REACH 0x57 /* Backup for Z-axis press */#define TP_DRAGHYS 0x58 /* Drag Hysteresis */ /* (how hard it is to drag */ /* with Z-axis pressed) */
#define TP_DOUBLETAP 0x58 /* TrackPoint doubletap register */
#define TP_MINDRAG 0x59 /* Minimum amount of force needed */ /* to trigger dragging */
#define TP_THRESH 0x5C /* Minimum value for a Z-axis press */#define TP_UP_THRESH 0x5A /* Used to generate a 'click' on Z-axis */#define TP_Z_TIME 0x5E /* How sharp of a press */#define TP_JENKS_CURV 0x5D /* Minimum curvature for double click */#define TP_DRIFT_TIME 0x5F /* How long a 'hands off' condition */ /* must last (x*107ms) for drift */ /* correction to occur */
/* * Toggling Flag bits */#define TP_TOGGLE 0x47 /* Toggle command */
#define TP_TOGGLE_MB 0x23 /* Disable/Enable Middle Button */#define TP_MASK_MB 0x01#define TP_TOGGLE_EXT_DEV 0x23 /* Disable external device */#define TP_MASK_EXT_DEV 0x02#define TP_TOGGLE_DRIFT 0x23 /* Drift Correction */#define TP_MASK_DRIFT 0x80#define TP_TOGGLE_BURST 0x28 /* Burst Mode */#define TP_MASK_BURST 0x80#define TP_TOGGLE_PTSON 0x2C /* Press to Select */#define TP_MASK_PTSON 0x01#define TP_TOGGLE_HARD_TRANS 0x2C /* Alternate method to set Hard Transparency */#define TP_MASK_HARD_TRANS 0x80#define TP_TOGGLE_TWOHAND 0x2D /* Two handed */#define TP_MASK_TWOHAND 0x01#define TP_TOGGLE_STICKY_TWO 0x2D /* Sticky two handed */#define TP_MASK_STICKY_TWO 0x04#define TP_TOGGLE_SKIPBACK 0x2D /* Suppress movement after drag release */#define TP_MASK_SKIPBACK 0x08#define TP_TOGGLE_SOURCE_TAG 0x20 /* Bit 3 of the first packet will be set to to the origin of the packet (external or TP) */#define TP_MASK_SOURCE_TAG 0x80#define TP_TOGGLE_EXT_TAG 0x22 /* Bit 3 of the first packet coming from the external device will be forced to 1 */#define TP_MASK_EXT_TAG 0x04
/* Doubletap register values */#define TP_DOUBLETAP_ENABLE 0xFF /* Enable value */#define TP_DOUBLETAP_DISABLE 0xFE /* Disable value */
/* Power on Self Test Results */#define TP_POR_SUCCESS 0x3B
/* * Default power on values */#define TP_DEF_SENS 0x80#define TP_DEF_INERTIA 0x06#define TP_DEF_SPEED 0x61#define TP_DEF_REACH 0x0A
#define TP_DEF_DRAGHYS 0xFF#define TP_DEF_MINDRAG 0x14
#define TP_DEF_THRESH 0x08#define TP_DEF_UP_THRESH 0xFF#define TP_DEF_Z_TIME 0x26#define TP_DEF_JENKS_CURV 0x87#define TP_DEF_DRIFT_TIME 0x05
/* Toggles */#define TP_DEF_MB 0x00#define TP_DEF_PTSON 0x00#define TP_DEF_SKIPBACK 0x00#define TP_DEF_EXT_DEV 0x00 /* 0 means enabled */#define TP_DEF_TWOHAND 0x00#define TP_DEF_SOURCE_TAG 0x00
#define MAKE_PS2_CMD(params, results, cmd) ((params<<12) | (results<<8) | (cmd))
struct trackpoint_data { u8 variant_id; u8 firmware_id;
u8 sensitivity, speed, inertia, reach; u8 draghys, mindrag; u8 thresh, upthresh; u8 ztime, jenks; u8 drift_time;
/* toggles */ bool press_to_select; bool skipback; bool ext_dev;};
int trackpoint_detect(struct psmouse *psmouse, bool set_properties);
#endif /* _TRACKPOINT_H */