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