Commit | Line | Data |
---|---|---|
2a0bd75e | 1 | /* |
3f8c0df4 | 2 | * Elantech Touchpad driver (v6) |
2a0bd75e | 3 | * |
3f8c0df4 | 4 | * Copyright (C) 2007-2009 Arjan Opmeer <arjan@opmeer.net> |
2a0bd75e AO |
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 | |
8 | * by the Free Software Foundation. | |
9 | * | |
10 | * Trademarks are the property of their respective owners. | |
11 | */ | |
12 | ||
13 | #ifndef _ELANTECH_H | |
14 | #define _ELANTECH_H | |
15 | ||
16 | /* | |
17 | * Command values for Synaptics style queries | |
18 | */ | |
19 | #define ETP_FW_VERSION_QUERY 0x01 | |
20 | #define ETP_CAPABILITIES_QUERY 0x02 | |
21 | ||
22 | /* | |
23 | * Command values for register reading or writing | |
24 | */ | |
25 | #define ETP_REGISTER_READ 0x10 | |
26 | #define ETP_REGISTER_WRITE 0x11 | |
27 | ||
28 | /* | |
29 | * Hardware version 2 custom PS/2 command value | |
30 | */ | |
31 | #define ETP_PS2_CUSTOM_COMMAND 0xf8 | |
32 | ||
33 | /* | |
34 | * Times to retry a ps2_command and millisecond delay between tries | |
35 | */ | |
36 | #define ETP_PS2_COMMAND_TRIES 3 | |
37 | #define ETP_PS2_COMMAND_DELAY 500 | |
38 | ||
39 | /* | |
40 | * Times to try to read back a register and millisecond delay between tries | |
41 | */ | |
42 | #define ETP_READ_BACK_TRIES 5 | |
43 | #define ETP_READ_BACK_DELAY 2000 | |
44 | ||
45 | /* | |
46 | * Register bitmasks for hardware version 1 | |
47 | */ | |
48 | #define ETP_R10_ABSOLUTE_MODE 0x04 | |
49 | #define ETP_R11_4_BYTE_MODE 0x02 | |
50 | ||
51 | /* | |
52 | * Capability bitmasks | |
53 | */ | |
54 | #define ETP_CAP_HAS_ROCKER 0x04 | |
55 | ||
56 | /* | |
57 | * One hard to find application note states that X axis range is 0 to 576 | |
58 | * and Y axis range is 0 to 384 for harware version 1. | |
59 | * Edge fuzz might be necessary because of bezel around the touchpad | |
60 | */ | |
61 | #define ETP_EDGE_FUZZ_V1 32 | |
62 | ||
63 | #define ETP_XMIN_V1 ( 0 + ETP_EDGE_FUZZ_V1) | |
64 | #define ETP_XMAX_V1 (576 - ETP_EDGE_FUZZ_V1) | |
65 | #define ETP_YMIN_V1 ( 0 + ETP_EDGE_FUZZ_V1) | |
66 | #define ETP_YMAX_V1 (384 - ETP_EDGE_FUZZ_V1) | |
67 | ||
68 | /* | |
69 | * It seems the resolution for hardware version 2 doubled. | |
70 | * Hence the X and Y ranges are doubled too. | |
71 | * The bezel around the pad also appears to be smaller | |
72 | */ | |
73 | #define ETP_EDGE_FUZZ_V2 8 | |
74 | ||
75 | #define ETP_XMIN_V2 ( 0 + ETP_EDGE_FUZZ_V2) | |
76 | #define ETP_XMAX_V2 (1152 - ETP_EDGE_FUZZ_V2) | |
77 | #define ETP_YMIN_V2 ( 0 + ETP_EDGE_FUZZ_V2) | |
78 | #define ETP_YMAX_V2 ( 768 - ETP_EDGE_FUZZ_V2) | |
79 | ||
80 | /* | |
81 | * For two finger touches the coordinate of each finger gets reported | |
82 | * separately but with reduced resolution. | |
83 | */ | |
84 | #define ETP_2FT_FUZZ 4 | |
85 | ||
86 | #define ETP_2FT_XMIN ( 0 + ETP_2FT_FUZZ) | |
87 | #define ETP_2FT_XMAX (288 - ETP_2FT_FUZZ) | |
88 | #define ETP_2FT_YMIN ( 0 + ETP_2FT_FUZZ) | |
89 | #define ETP_2FT_YMAX (192 - ETP_2FT_FUZZ) | |
90 | ||
91 | struct elantech_data { | |
92 | unsigned char reg_10; | |
93 | unsigned char reg_11; | |
94 | unsigned char reg_20; | |
95 | unsigned char reg_21; | |
96 | unsigned char reg_22; | |
97 | unsigned char reg_23; | |
98 | unsigned char reg_24; | |
99 | unsigned char reg_25; | |
100 | unsigned char reg_26; | |
101 | unsigned char debug; | |
102 | unsigned char capabilities; | |
103 | unsigned char fw_version_maj; | |
104 | unsigned char fw_version_min; | |
105 | unsigned char hw_version; | |
106 | unsigned char paritycheck; | |
3f8c0df4 | 107 | unsigned char jumpy_cursor; |
2a0bd75e AO |
108 | unsigned char parity[256]; |
109 | }; | |
110 | ||
111 | #ifdef CONFIG_MOUSE_PS2_ELANTECH | |
b7802c5c | 112 | int elantech_detect(struct psmouse *psmouse, bool set_properties); |
2a0bd75e AO |
113 | int elantech_init(struct psmouse *psmouse); |
114 | #else | |
b7802c5c | 115 | static inline int elantech_detect(struct psmouse *psmouse, bool set_properties) |
2a0bd75e AO |
116 | { |
117 | return -ENOSYS; | |
118 | } | |
119 | static inline int elantech_init(struct psmouse *psmouse) | |
120 | { | |
121 | return -ENOSYS; | |
122 | } | |
123 | #endif /* CONFIG_MOUSE_PS2_ELANTECH */ | |
124 | ||
125 | #endif |