Automerge with /usr/src/ntfs-2.6.git.
[linux-2.6] / drivers / input / mouse / lifebook.c
1 /*
2  * Fujitsu B-series Lifebook PS/2 TouchScreen driver
3  *
4  * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
5  * Copyright (c) 2005 Kenan Esau <kenan.esau@conan.de>
6  *
7  * TouchScreen detection, absolute mode setting and packet layout is taken from
8  * Harald Hoyer's description of the device.
9  *
10  * This program is free software; you can redistribute it and/or modify it
11  * under the terms of the GNU General Public License version 2 as published by
12  * the Free Software Foundation.
13  */
14
15 #include <linux/input.h>
16 #include <linux/serio.h>
17 #include <linux/libps2.h>
18 #include <linux/dmi.h>
19
20 #include "psmouse.h"
21 #include "lifebook.h"
22
23 static struct dmi_system_id lifebook_dmi_table[] = {
24        {
25                .ident = "Lifebook B",
26                .matches = {
27                        DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"),
28                },
29        },
30        { }
31 };
32
33
34 static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse, struct pt_regs *regs)
35 {
36         unsigned char *packet = psmouse->packet;
37         struct input_dev *dev = &psmouse->dev;
38
39         if (psmouse->pktcnt != 3)
40                 return PSMOUSE_GOOD_DATA;
41
42         input_regs(dev, regs);
43
44         /* calculate X and Y */
45         if ((packet[0] & 0x08) == 0x00) {
46                 input_report_abs(dev, ABS_X,
47                                  (packet[1] | ((packet[0] & 0x30) << 4)));
48                 input_report_abs(dev, ABS_Y,
49                                  1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));
50         } else {
51                 input_report_rel(dev, REL_X,
52                                 ((packet[0] & 0x10) ? packet[1] - 256 : packet[1]));
53                 input_report_rel(dev, REL_Y,
54                                  -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2]));
55         }
56
57         input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
58         input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
59         input_report_key(dev, BTN_TOUCH, packet[0] & 0x04);
60
61         input_sync(dev);
62
63         return PSMOUSE_FULL_PACKET;
64 }
65
66 static int lifebook_absolute_mode(struct psmouse *psmouse)
67 {
68         struct ps2dev *ps2dev = &psmouse->ps2dev;
69         unsigned char param;
70
71         if (psmouse_reset(psmouse))
72                 return -1;
73
74         /*
75            Enable absolute output -- ps2_command fails always but if
76            you leave this call out the touchsreen will never send
77            absolute coordinates
78         */
79         param = 0x07;
80         ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
81
82         return 0;
83 }
84
85 static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution)
86 {
87         unsigned char params[] = { 0, 1, 2, 2, 3 };
88
89         if (resolution == 0 || resolution > 400)
90                 resolution = 400;
91
92         ps2_command(&psmouse->ps2dev, &params[resolution / 100], PSMOUSE_CMD_SETRES);
93         psmouse->resolution = 50 << params[resolution / 100];
94 }
95
96 static void lifebook_disconnect(struct psmouse *psmouse)
97 {
98         psmouse_reset(psmouse);
99 }
100
101 int lifebook_detect(struct psmouse *psmouse, int set_properties)
102 {
103         if (!dmi_check_system(lifebook_dmi_table))
104                 return -1;
105
106         if (set_properties) {
107                 psmouse->vendor = "Fujitsu";
108                 psmouse->name = "Lifebook TouchScreen";
109         }
110
111         return 0;
112 }
113
114 int lifebook_init(struct psmouse *psmouse)
115 {
116         if (lifebook_absolute_mode(psmouse))
117                 return -1;
118
119         psmouse->dev.evbit[0] = BIT(EV_ABS) | BIT(EV_KEY) | BIT(EV_REL);
120         psmouse->dev.keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
121         psmouse->dev.keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
122         psmouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y);
123         input_set_abs_params(&psmouse->dev, ABS_X, 0, 1024, 0, 0);
124         input_set_abs_params(&psmouse->dev, ABS_Y, 0, 1024, 0, 0);
125
126         psmouse->protocol_handler = lifebook_process_byte;
127         psmouse->set_resolution = lifebook_set_resolution;
128         psmouse->disconnect = lifebook_disconnect;
129         psmouse->reconnect  = lifebook_absolute_mode;
130         psmouse->pktsize = 3;
131
132         return 0;
133 }
134