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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 | |
b8044c74 | 81 | #define TP_TOGGLE_EXT_DEV 0x23 /* Disable external device */ |
541e316a SE |
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 | |
b8044c74 | 128 | #define TP_DEF_EXT_DEV 0x00 /* 0 means enabled */ |
0c6a6165 SN |
129 | #define TP_DEF_TWOHAND 0x00 |
130 | #define TP_DEF_SOURCE_TAG 0x00 | |
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131 | |
132 | #define MAKE_PS2_CMD(params, results, cmd) ((params<<12) | (results<<8) | (cmd)) | |
133 | ||
134 | struct trackpoint_data | |
135 | { | |
136 | unsigned char sensitivity, speed, inertia, reach; | |
137 | unsigned char draghys, mindrag; | |
138 | unsigned char thresh, upthresh; | |
139 | unsigned char ztime, jenks; | |
140 | ||
0c6a6165 | 141 | /* toggles */ |
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142 | unsigned char press_to_select; |
143 | unsigned char skipback; | |
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144 | unsigned char ext_dev; |
145 | }; | |
146 | ||
55e3d922 | 147 | #ifdef CONFIG_MOUSE_PS2_TRACKPOINT |
b7802c5c | 148 | int trackpoint_detect(struct psmouse *psmouse, bool set_properties); |
55e3d922 | 149 | #else |
b7802c5c | 150 | inline int trackpoint_detect(struct psmouse *psmouse, bool set_properties) |
55e3d922 AS |
151 | { |
152 | return -ENOSYS; | |
153 | } | |
154 | #endif /* CONFIG_MOUSE_PS2_TRACKPOINT */ | |
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155 | |
156 | #endif /* _TRACKPOINT_H */ |