245 lines
6 KiB
C
245 lines
6 KiB
C
/*
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* Fujitsu B-series Lifebook PS/2 TouchScreen driver
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*
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* Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
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* Copyright (c) 2005 Kenan Esau <kenan.esau@conan.de>
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*
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* TouchScreen detection, absolute mode setting and packet layout is taken from
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* Harald Hoyer's description of the device.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*/
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#include <linux/input.h>
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#include <linux/serio.h>
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#include <linux/libps2.h>
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#include <linux/dmi.h>
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#include "psmouse.h"
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#include "lifebook.h"
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static const char *desired_serio_phys;
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static int lifebook_set_serio_phys(struct dmi_system_id *d)
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{
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desired_serio_phys = d->driver_data;
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return 0;
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}
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static unsigned char lifebook_use_6byte_proto;
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static int lifebook_set_6byte_proto(struct dmi_system_id *d)
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{
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lifebook_use_6byte_proto = 1;
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return 0;
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}
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static struct dmi_system_id lifebook_dmi_table[] = {
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{
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.ident = "FLORA-ie 55mi",
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.matches = {
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DMI_MATCH(DMI_PRODUCT_NAME, "FLORA-ie 55mi"),
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},
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},
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{
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.ident = "LifeBook B",
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.matches = {
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DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B Series"),
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},
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},
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{
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.ident = "Lifebook B",
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.matches = {
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DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"),
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},
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},
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{
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.ident = "Lifebook B213x/B2150",
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.matches = {
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DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B2131/B2133/B2150"),
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},
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},
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{
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.ident = "Zephyr",
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.matches = {
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DMI_MATCH(DMI_PRODUCT_NAME, "ZEPHYR"),
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},
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},
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{
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.ident = "CF-18",
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.matches = {
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DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"),
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},
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.callback = lifebook_set_serio_phys,
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.driver_data = "isa0060/serio3",
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},
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{
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.ident = "Panasonic CF-28",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
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DMI_MATCH(DMI_PRODUCT_NAME, "CF-28"),
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},
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.callback = lifebook_set_6byte_proto,
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},
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{
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.ident = "Panasonic CF-29",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
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DMI_MATCH(DMI_PRODUCT_NAME, "CF-29"),
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},
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.callback = lifebook_set_6byte_proto,
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},
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{
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.ident = "Lifebook B142",
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.matches = {
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DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"),
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},
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},
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{ }
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};
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static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse)
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{
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struct input_dev *dev = psmouse->dev;
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unsigned char *packet = psmouse->packet;
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int relative_packet = packet[0] & 0x08;
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if (relative_packet || !lifebook_use_6byte_proto) {
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if (psmouse->pktcnt != 3)
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return PSMOUSE_GOOD_DATA;
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} else {
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switch (psmouse->pktcnt) {
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case 1:
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return (packet[0] & 0xf8) == 0x00 ?
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PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
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case 2:
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return PSMOUSE_GOOD_DATA;
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case 3:
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return ((packet[2] & 0x30) << 2) == (packet[2] & 0xc0) ?
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PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
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case 4:
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return (packet[3] & 0xf8) == 0xc0 ?
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PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
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case 5:
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return (packet[4] & 0xc0) == (packet[2] & 0xc0) ?
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PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
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case 6:
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if (((packet[5] & 0x30) << 2) != (packet[5] & 0xc0))
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return PSMOUSE_BAD_DATA;
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if ((packet[5] & 0xc0) != (packet[1] & 0xc0))
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return PSMOUSE_BAD_DATA;
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break; /* report data */
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}
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}
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if (relative_packet) {
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input_report_rel(dev, REL_X,
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((packet[0] & 0x10) ? packet[1] - 256 : packet[1]));
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input_report_rel(dev, REL_Y,
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-(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2]));
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} else if (lifebook_use_6byte_proto) {
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input_report_abs(dev, ABS_X,
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((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f));
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input_report_abs(dev, ABS_Y,
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4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f)));
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} else {
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input_report_abs(dev, ABS_X,
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(packet[1] | ((packet[0] & 0x30) << 4)));
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input_report_abs(dev, ABS_Y,
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1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));
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}
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input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
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input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
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input_report_key(dev, BTN_TOUCH, packet[0] & 0x04);
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input_sync(dev);
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return PSMOUSE_FULL_PACKET;
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}
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static int lifebook_absolute_mode(struct psmouse *psmouse)
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{
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struct ps2dev *ps2dev = &psmouse->ps2dev;
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unsigned char param;
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if (psmouse_reset(psmouse))
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return -1;
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/*
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Enable absolute output -- ps2_command fails always but if
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you leave this call out the touchsreen will never send
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absolute coordinates
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*/
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param = lifebook_use_6byte_proto ? 0x08 : 0x07;
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ps2_command(ps2dev, ¶m, PSMOUSE_CMD_SETRES);
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return 0;
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}
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static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution)
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{
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static const unsigned char params[] = { 0, 1, 2, 2, 3 };
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unsigned char p;
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if (resolution == 0 || resolution > 400)
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resolution = 400;
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p = params[resolution / 100];
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ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
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psmouse->resolution = 50 << p;
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}
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static void lifebook_disconnect(struct psmouse *psmouse)
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{
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psmouse_reset(psmouse);
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}
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int lifebook_detect(struct psmouse *psmouse, int set_properties)
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{
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if (!dmi_check_system(lifebook_dmi_table))
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return -1;
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if (desired_serio_phys &&
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strcmp(psmouse->ps2dev.serio->phys, desired_serio_phys))
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return -1;
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if (set_properties) {
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psmouse->vendor = "Fujitsu";
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psmouse->name = "Lifebook TouchScreen";
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}
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return 0;
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}
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int lifebook_init(struct psmouse *psmouse)
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{
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struct input_dev *input_dev = psmouse->dev;
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int max_coord = lifebook_use_6byte_proto ? 1024 : 4096;
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if (lifebook_absolute_mode(psmouse))
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return -1;
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input_dev->evbit[0] = BIT(EV_ABS) | BIT(EV_KEY) | BIT(EV_REL);
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input_dev->keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
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input_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
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input_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y);
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input_set_abs_params(input_dev, ABS_X, 0, max_coord, 0, 0);
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input_set_abs_params(input_dev, ABS_Y, 0, max_coord, 0, 0);
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psmouse->protocol_handler = lifebook_process_byte;
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psmouse->set_resolution = lifebook_set_resolution;
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psmouse->disconnect = lifebook_disconnect;
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psmouse->reconnect = lifebook_absolute_mode;
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/*
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* Use packet size = 3 even when using 6-byte protocol because
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* that's what POLL will return on Lifebooks (according to spec).
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*/
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psmouse->pktsize = 3;
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return 0;
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}
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