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review.evervolv.com / android_kernel_oneplus_msm8996 / 1dc6edec127e1fdb89d246189c232fe635d2f921 / . / drivers / input / mouse / elantech.h
blob: 7ecaef0c07c43aeedb6d7005b2c08c4457daafb3 [file] [log] [blame]
Arjan Opmeer2a0bd752008-10-16 22:10:19 -0400[diff] [blame]1/*
Arjan Opmeer3f8c0df2009-04-18 19:05:40 -0700[diff] [blame]2 * Elantech Touchpad driver (v6)
Arjan Opmeer2a0bd752008-10-16 22:10:19 -0400[diff] [blame]3 *
Arjan Opmeer3f8c0df2009-04-18 19:05:40 -0700[diff] [blame]4 * Copyright (C) 2007-2009 Arjan Opmeer <arjan@opmeer.net>
Arjan Opmeer2a0bd752008-10-16 22:10:19 -0400[diff] [blame]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 */
JJ Ding28f49612011-09-09 10:30:31 -0700[diff] [blame]19#define ETP_FW_ID_QUERY 0x00
Arjan Opmeer2a0bd752008-10-16 22:10:19 -0400[diff] [blame]20#define ETP_FW_VERSION_QUERY 0x01
21#define ETP_CAPABILITIES_QUERY 0x02
22
23/*
24 * Command values for register reading or writing
25 */
26#define ETP_REGISTER_READ 0x10
27#define ETP_REGISTER_WRITE 0x11
JJ Ding28f49612011-09-09 10:30:31 -0700[diff] [blame]28#define ETP_REGISTER_READWRITE 0x00
Arjan Opmeer2a0bd752008-10-16 22:10:19 -0400[diff] [blame]29
30/*
31 * Hardware version 2 custom PS/2 command value
32 */
33#define ETP_PS2_CUSTOM_COMMAND 0xf8
34
35/*
36 * Times to retry a ps2_command and millisecond delay between tries
37 */
38#define ETP_PS2_COMMAND_TRIES 3
39#define ETP_PS2_COMMAND_DELAY 500
40
41/*
42 * Times to try to read back a register and millisecond delay between tries
43 */
44#define ETP_READ_BACK_TRIES 5
45#define ETP_READ_BACK_DELAY 2000
46
47/*
48 * Register bitmasks for hardware version 1
49 */
50#define ETP_R10_ABSOLUTE_MODE 0x04
51#define ETP_R11_4_BYTE_MODE 0x02
52
53/*
54 * Capability bitmasks
55 */
56#define ETP_CAP_HAS_ROCKER 0x04
57
58/*
59 * One hard to find application note states that X axis range is 0 to 576
60 * and Y axis range is 0 to 384 for harware version 1.
61 * Edge fuzz might be necessary because of bezel around the touchpad
62 */
63#define ETP_EDGE_FUZZ_V1 32
64
65#define ETP_XMIN_V1 ( 0 + ETP_EDGE_FUZZ_V1)
66#define ETP_XMAX_V1 (576 - ETP_EDGE_FUZZ_V1)
67#define ETP_YMIN_V1 ( 0 + ETP_EDGE_FUZZ_V1)
68#define ETP_YMAX_V1 (384 - ETP_EDGE_FUZZ_V1)
69
70/*
JJ Ding8a360d02011-09-09 10:27:42 -0700[diff] [blame]71 * The resolution for older v2 hardware doubled.
72 * (newer v2's firmware provides command so we can query)
Arjan Opmeer2a0bd752008-10-16 22:10:19 -0400[diff] [blame]73 */
JJ Ding8a360d02011-09-09 10:27:42 -0700[diff] [blame]74#define ETP_XMIN_V2 0
75#define ETP_XMAX_V2 1152
76#define ETP_YMIN_V2 0
77#define ETP_YMAX_V2 768
Arjan Opmeer2a0bd752008-10-16 22:10:19 -0400[diff] [blame]78
Éric Pielf941c702011-05-16 22:45:54 -0700[diff] [blame]79#define ETP_PMIN_V2 0
80#define ETP_PMAX_V2 255
81#define ETP_WMIN_V2 0
82#define ETP_WMAX_V2 15
83
JJ Ding28f49612011-09-09 10:30:31 -0700[diff] [blame]84/*
JJ Ding1dc6ede2011-09-09 10:31:58 -0700[diff] [blame^]85 * v3 hardware has 2 kinds of packet types,
86 * v4 hardware has 3.
JJ Ding28f49612011-09-09 10:30:31 -0700[diff] [blame]87 */
88#define PACKET_UNKNOWN 0x01
89#define PACKET_DEBOUNCE 0x02
90#define PACKET_V3_HEAD 0x03
91#define PACKET_V3_TAIL 0x04
JJ Ding1dc6ede2011-09-09 10:31:58 -0700[diff] [blame^]92#define PACKET_V4_HEAD 0x05
93#define PACKET_V4_MOTION 0x06
94#define PACKET_V4_STATUS 0x07
95
96/*
97 * track up to 5 fingers for v4 hardware
98 */
99#define ETP_MAX_FINGERS 5
100
101/*
102 * weight value for v4 hardware
103 */
104#define ETP_WEIGHT_VALUE 5
105
106/*
107 * The base position for one finger, v4 hardware
108 */
109struct finger_pos {
110 unsigned int x;
111 unsigned int y;
112};
JJ Ding28f49612011-09-09 10:30:31 -0700[diff] [blame]113
Arjan Opmeer2a0bd752008-10-16 22:10:19 -0400[diff] [blame]114struct elantech_data {
JJ Ding1dc6ede2011-09-09 10:31:58 -0700[diff] [blame^]115 unsigned char reg_07;
Arjan Opmeer2a0bd752008-10-16 22:10:19 -0400[diff] [blame]116 unsigned char reg_10;
117 unsigned char reg_11;
118 unsigned char reg_20;
119 unsigned char reg_21;
120 unsigned char reg_22;
121 unsigned char reg_23;
122 unsigned char reg_24;
123 unsigned char reg_25;
124 unsigned char reg_26;
125 unsigned char debug;
JJ Ding230282a2011-09-09 10:26:16 -0700[diff] [blame]126 unsigned char capabilities[3];
Éric Piel7f29f172010-08-05 23:51:49 -0700[diff] [blame]127 bool paritycheck;
128 bool jumpy_cursor;
Éric Pielf941c702011-05-16 22:45:54 -0700[diff] [blame]129 bool reports_pressure;
Dmitry Torokhov504e8be2010-05-13 00:41:15 -0700[diff] [blame]130 unsigned char hw_version;
Éric Piel7f29f172010-08-05 23:51:49 -0700[diff] [blame]131 unsigned int fw_version;
132 unsigned int single_finger_reports;
JJ Ding230282a2011-09-09 10:26:16 -0700[diff] [blame]133 unsigned int y_max;
JJ Ding1dc6ede2011-09-09 10:31:58 -0700[diff] [blame^]134 unsigned int width;
135 struct finger_pos mt[ETP_MAX_FINGERS];
Arjan Opmeer2a0bd752008-10-16 22:10:19 -0400[diff] [blame]136 unsigned char parity[256];
137};
138
139#ifdef CONFIG_MOUSE_PS2_ELANTECH
Dmitry Torokhovb7802c52009-09-09 19:13:20 -0700[diff] [blame]140int elantech_detect(struct psmouse *psmouse, bool set_properties);
Arjan Opmeer2a0bd752008-10-16 22:10:19 -0400[diff] [blame]141int elantech_init(struct psmouse *psmouse);
142#else
Dmitry Torokhovb7802c52009-09-09 19:13:20 -0700[diff] [blame]143static inline int elantech_detect(struct psmouse *psmouse, bool set_properties)
Arjan Opmeer2a0bd752008-10-16 22:10:19 -0400[diff] [blame]144{
145 return -ENOSYS;
146}
147static inline int elantech_init(struct psmouse *psmouse)
148{
149 return -ENOSYS;
150}
151#endif /* CONFIG_MOUSE_PS2_ELANTECH */
152
153#endif