1/* 2 * IBM TrackPoint PS/2 mouse driver 3 * 4 * Stephen Evanchik <evanchsa@gmail.com> 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 as published by 8 * the Free Software Foundation. 9 */ 10 11#ifndef _TRACKPOINT_H 12#define _TRACKPOINT_H 13 14/* 15 * These constants are from the TrackPoint System 16 * Engineering documentation Version 4 from IBM Watson 17 * research: 18 * http://wwwcssrv.almaden.ibm.com/trackpoint/download.html 19 */ 20 21#define TP_COMMAND 0xE2 /* Commands start with this */ 22 23#define TP_READ_ID 0xE1 /* Sent for device identification */ 24#define TP_MAGIC_IDENT 0x01 /* Sent after a TP_READ_ID followed */ 25 /* by the firmware ID */ 26 27 28/* 29 * Commands 30 */ 31#define TP_RECALIB 0x51 /* Recalibrate */ 32#define TP_POWER_DOWN 0x44 /* Can only be undone through HW reset */ 33#define TP_EXT_DEV 0x21 /* Determines if external device is connected (RO) */ 34#define TP_EXT_BTN 0x4B /* Read extended button status */ 35#define TP_POR 0x7F /* Execute Power on Reset */ 36#define TP_POR_RESULTS 0x25 /* Read Power on Self test results */ 37#define TP_DISABLE_EXT 0x40 /* Disable external pointing device */ 38#define TP_ENABLE_EXT 0x41 /* Enable external pointing device */ 39 40/* 41 * Mode manipulation 42 */ 43#define TP_SET_SOFT_TRANS 0x4E /* Set mode */ 44#define TP_CANCEL_SOFT_TRANS 0xB9 /* Cancel mode */ 45#define TP_SET_HARD_TRANS 0x45 /* Mode can only be set */ 46 47 48/* 49 * Register oriented commands/properties 50 */ 51#define TP_WRITE_MEM 0x81 52#define TP_READ_MEM 0x80 /* Not used in this implementation */ 53 54/* 55* RAM Locations for properties 56 */ 57#define TP_SENS 0x4A /* Sensitivity */ 58#define TP_MB 0x4C /* Read Middle Button Status (RO) */ 59#define TP_INERTIA 0x4D /* Negative Inertia */ 60#define TP_SPEED 0x60 /* Speed of TP Cursor */ 61#define TP_REACH 0x57 /* Backup for Z-axis press */ 62#define TP_DRAGHYS 0x58 /* Drag Hysteresis */ 63 /* (how hard it is to drag */ 64 /* with Z-axis pressed) */ 65 66#define TP_MINDRAG 0x59 /* Minimum amount of force needed */ 67 /* to trigger dragging */ 68 69#define TP_THRESH 0x5C /* Minimum value for a Z-axis press */ 70#define TP_UP_THRESH 0x5A /* Used to generate a 'click' on Z-axis */ 71#define TP_Z_TIME 0x5E /* How sharp of a press */ 72#define TP_JENKS_CURV 0x5D /* Minimum curvature for double click */ 73 74/* 75 * Toggling Flag bits 76 */ 77#define TP_TOGGLE 0x47 /* Toggle command */ 78 79#define TP_TOGGLE_MB 0x23 /* Disable/Enable Middle Button */ 80#define TP_MASK_MB 0x01 81#define TP_TOGGLE_EXT_DEV 0x23 /* Disable external device */ 82#define TP_MASK_EXT_DEV 0x02 83#define TP_TOGGLE_DRIFT 0x23 /* Drift Correction */ 84#define TP_MASK_DRIFT 0x80 85#define TP_TOGGLE_BURST 0x28 /* Burst Mode */ 86#define TP_MASK_BURST 0x80 87#define TP_TOGGLE_PTSON 0x2C /* Press to Select */ 88#define TP_MASK_PTSON 0x01 89#define TP_TOGGLE_HARD_TRANS 0x2C /* Alternate method to set Hard Transparency */ 90#define TP_MASK_HARD_TRANS 0x80 91#define TP_TOGGLE_TWOHAND 0x2D /* Two handed */ 92#define TP_MASK_TWOHAND 0x01 93#define TP_TOGGLE_STICKY_TWO 0x2D /* Sticky two handed */ 94#define TP_MASK_STICKY_TWO 0x04 95#define TP_TOGGLE_SKIPBACK 0x2D /* Suppress movement after drag release */ 96#define TP_MASK_SKIPBACK 0x08 97#define TP_TOGGLE_SOURCE_TAG 0x20 /* Bit 3 of the first packet will be set to 98 to the origin of the packet (external or TP) */ 99#define TP_MASK_SOURCE_TAG 0x80 100#define TP_TOGGLE_EXT_TAG 0x22 /* Bit 3 of the first packet coming from the 101 external device will be forced to 1 */ 102#define TP_MASK_EXT_TAG 0x04 103 104 105/* Power on Self Test Results */ 106#define TP_POR_SUCCESS 0x3B 107 108/* 109 * Default power on values 110 */ 111#define TP_DEF_SENS 0x80 112#define TP_DEF_INERTIA 0x06 113#define TP_DEF_SPEED 0x61 114#define TP_DEF_REACH 0x0A 115 116#define TP_DEF_DRAGHYS 0xFF 117#define TP_DEF_MINDRAG 0x14 118 119#define TP_DEF_THRESH 0x08 120#define TP_DEF_UP_THRESH 0xFF 121#define TP_DEF_Z_TIME 0x26 122#define TP_DEF_JENKS_CURV 0x87 123 124/* Toggles */ 125#define TP_DEF_MB 0x00 126#define TP_DEF_PTSON 0x00 127#define TP_DEF_SKIPBACK 0x00 128#define TP_DEF_EXT_DEV 0x00 /* 0 means enabled */ 129 130#define MAKE_PS2_CMD(params, results, cmd) ((params<<12) | (results<<8) | (cmd)) 131 132struct trackpoint_data 133{ 134 unsigned char sensitivity, speed, inertia, reach; 135 unsigned char draghys, mindrag; 136 unsigned char thresh, upthresh; 137 unsigned char ztime, jenks; 138 139 unsigned char press_to_select; 140 unsigned char skipback; 141 142 unsigned char ext_dev; 143}; 144 145#ifdef CONFIG_MOUSE_PS2_TRACKPOINT 146int trackpoint_detect(struct psmouse *psmouse, int set_properties); 147#else 148inline int trackpoint_detect(struct psmouse *psmouse, int set_properties) 149{ 150 return -ENOSYS; 151} 152#endif /* CONFIG_MOUSE_PS2_TRACKPOINT */ 153 154#endif /* _TRACKPOINT_H */ 155