2 * ALPS touchpad PS/2 mouse driver
4 * Copyright (c) 2003 Peter Osterlund <petero2@telia.com>
5 * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published by
9 * the Free Software Foundation.
15 #define ALPS_PROTO_V1 0
16 #define ALPS_PROTO_V2 1
17 #define ALPS_PROTO_V3 2
18 #define ALPS_PROTO_V4 3
21 * struct alps_model_info - touchpad ID table
22 * @signature: E7 response string to match.
23 * @command_mode_resp: For V3/V4 touchpads, the final byte of the EC response
24 * (aka command mode response) identifies the firmware minor version. This
25 * can be used to distinguish different hardware models which are not
26 * uniquely identifiable through their E7 responses.
27 * @proto_version: Indicates V1/V2/V3/...
28 * @byte0: Helps figure out whether a position report packet matches the
29 * known format for this model. The first byte of the report, ANDed with
30 * mask0, should match byte0.
31 * @mask0: The mask used to check the first byte of the report.
32 * @flags: Additional device capabilities (passthrough port, trackstick, etc.).
34 * Many (but not all) ALPS touchpads can be identified by looking at the
35 * values returned in the "E7 report" and/or the "EC report." This table
36 * lists a number of such touchpads.
38 struct alps_model_info {
39 unsigned char signature[3];
40 unsigned char command_mode_resp;
41 unsigned char proto_version;
42 unsigned char byte0, mask0;
47 * struct alps_nibble_commands - encodings for register accesses
48 * @command: PS/2 command used for the nibble
49 * @data: Data supplied as an argument to the PS/2 command, if applicable
51 * The ALPS protocol uses magic sequences to transmit binary data to the
52 * touchpad, as it is generally not OK to send arbitrary bytes out the
53 * PS/2 port. Each of the sequences in this table sends one nibble of the
54 * register address or (write) data. Different versions of the ALPS protocol
55 * use slightly different encodings.
57 struct alps_nibble_commands {
63 * struct alps_data - private data structure for the ALPS driver
64 * @dev2: "Relative" device used to report trackstick or mouse activity.
65 * @phys: Physical path for the relative device.
66 * @i: Information on the detected touchpad model.
67 * @nibble_commands: Command mapping used for touchpad register accesses.
68 * @addr_command: Command used to tell the touchpad that a register address
70 * @prev_fin: Finger bit from previous packet.
71 * @multi_packet: Multi-packet data in progress.
72 * @multi_data: Saved multi-packet data.
73 * @x1: First X coordinate from last MT report.
74 * @x2: Second X coordinate from last MT report.
75 * @y1: First Y coordinate from last MT report.
76 * @y2: Second Y coordinate from last MT report.
77 * @fingers: Number of fingers from last MT report.
78 * @quirks: Bitmap of ALPS_QUIRK_*.
79 * @timer: Timer for flushing out the final report packet in the stream.
82 struct input_dev *dev2;
84 const struct alps_model_info *i;
85 const struct alps_nibble_commands *nibble_commands;
89 unsigned char multi_data[6];
93 struct timer_list timer;
96 #define ALPS_QUIRK_TRACKSTICK_BUTTONS 1 /* trakcstick buttons in trackstick packet */
98 #ifdef CONFIG_MOUSE_PS2_ALPS
99 int alps_detect(struct psmouse *psmouse, bool set_properties);
100 int alps_init(struct psmouse *psmouse);
102 inline int alps_detect(struct psmouse *psmouse, bool set_properties)
106 inline int alps_init(struct psmouse *psmouse)
110 #endif /* CONFIG_MOUSE_PS2_ALPS */