2 * Fujitsu B-series Lifebook PS/2 TouchScreen driver
4 * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
5 * Copyright (c) 2005 Kenan Esau <kenan.esau@conan.de>
7 * TouchScreen detection, absolute mode setting and packet layout is taken from
8 * Harald Hoyer's description of the device.
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.
15 #include <linux/input.h>
16 #include <linux/serio.h>
17 #include <linux/libps2.h>
18 #include <linux/dmi.h>
23 static struct dmi_system_id lifebook_dmi_table[] = {
25 .ident = "Lifebook B",
27 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"),
34 static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse, struct pt_regs *regs)
36 unsigned char *packet = psmouse->packet;
37 struct input_dev *dev = &psmouse->dev;
39 if (psmouse->pktcnt != 3)
40 return PSMOUSE_GOOD_DATA;
42 input_regs(dev, regs);
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)));
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]));
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);
63 return PSMOUSE_FULL_PACKET;
66 static int lifebook_initialize(struct psmouse *psmouse)
68 struct ps2dev *ps2dev = &psmouse->ps2dev;
71 if (psmouse_reset(psmouse))
75 Enable absolute output -- ps2_command fails always but if
76 you leave this call out the touchsreen will never send
80 ps2_command(ps2dev, ¶m, PSMOUSE_CMD_SETRES);
85 static void lifebook_disconnect(struct psmouse *psmouse)
87 psmouse_reset(psmouse);
90 int lifebook_detect(struct psmouse *psmouse, unsigned int max_proto,
93 if (!dmi_check_system(lifebook_dmi_table) && max_proto != PSMOUSE_LIFEBOOK)
97 psmouse->vendor = "Fujitsu Lifebook";
98 psmouse->name = "TouchScreen";
99 psmouse->dev.evbit[0] = BIT(EV_ABS) | BIT(EV_KEY) | BIT(EV_REL);
100 psmouse->dev.keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
101 psmouse->dev.keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
102 psmouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y);
103 input_set_abs_params(&psmouse->dev, ABS_X, 0, 1024, 0, 0);
104 input_set_abs_params(&psmouse->dev, ABS_Y, 0, 1024, 0, 0);
106 psmouse->protocol_handler = lifebook_process_byte;
107 psmouse->disconnect = lifebook_disconnect;
108 psmouse->reconnect = lifebook_initialize;
109 psmouse->pktsize = 3;
112 return lifebook_initialize(psmouse);