/*
* 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 <linux/slab.h>
#include "psmouse.h"
#include "lifebook.h"
struct lifebook_data {
struct input_dev *dev2; /* Relative device */
char phys[32];
};
static bool lifebook_present;
static const char *desired_serio_phys;
static int lifebook_limit_serio3(const struct dmi_system_id *d)
{
desired_serio_phys = "isa0060/serio3";
return 0;
}
static bool lifebook_use_6byte_proto;
static int lifebook_set_6byte_proto(const struct dmi_system_id *d)
{
lifebook_use_6byte_proto = true;
return 0;
}
static const struct dmi_system_id __initconst lifebook_dmi_table[] = {
{
/* FLORA-ie 55mi */
.matches = {
DMI_MATCH(DMI_PRODUCT_NAME, "FLORA-ie 55mi"),
},
},
{
/* LifeBook B */
.matches = {
DMI_MATCH(DMI_PRODUCT_NAME, "Lifebook B Series"),
},
},
{
/* LifeBook B */
.matches = {
DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B Series"),
},
},
{
/* Lifebook B */
.matches = {
DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"),
},
},
{
/* Lifebook B-2130 */
.matches = {
DMI_MATCH(DMI_BOARD_NAME, "ZEPHYR"),
},
},
{
/* Lifebook B213x/B2150 */
.matches = {
DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B2131/B2133/B2150"),
},
},
{
/* Zephyr */
.matches = {
DMI_MATCH(DMI_PRODUCT_NAME, "ZEPHYR"),
},
},
{
/* Panasonic CF-18 */
.matches = {
DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"),
},
.callback = lifebook_limit_serio3,
},
{
/* Panasonic CF-28 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
DMI_MATCH(DMI_PRODUCT_NAME, "CF-28"),
},
.callback = lifebook_set_6byte_proto,
},
{
/* Panasonic CF-29 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
DMI_MATCH(DMI_PRODUCT_NAME, "CF-29"),
},
.callback = lifebook_set_6byte_proto,
},
{
/* Panasonic CF-72 */
.matches = {
DMI_MATCH(DMI_PRODUCT_NAME, "CF-72"),
},
.callback = lifebook_set_6byte_proto,
},
{
/* Lifebook B142 */
.matches = {
DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"),
},
},
{ }
};
void __init lifebook_module_init(void)
{
lifebook_present = dmi_check_system(lifebook_dmi_table);
}
static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse)
{
struct lifebook_data *priv = psmouse->private;
struct input_dev *dev1 = psmouse->dev;
struct input_dev *dev2 = priv ? priv->dev2 : NULL;
unsigned char *packet = psmouse->packet;
bool 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) {
if (!dev2)
printk(KERN_WARNING "lifebook.c: got relative packet "
"but no relative device set up\n");
} else {
if (lifebook_use_6byte_proto) {
input_report_abs(dev1, ABS_X,
((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f));
input_report_abs(dev1, ABS_Y,
4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f)));
} else {
input_report_abs(dev1, ABS_X,
(packet[1] | ((packet[0] & 0x30) << 4)));
input_report_abs(dev1, ABS_Y,
1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));
}
input_report_key(dev1, BTN_TOUCH, packet[0] & 0x04);
input_sync(dev1);
}
if (dev2) {
if (relative_packet) {
input_report_rel(dev2, REL_X,
((packet[0] & 0x10) ? packet[1] - 256 : packet[1]));
input_report_rel(dev2, REL_Y,
-(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2]));
}
input_report_key(dev2, BTN_LEFT, packet[0] & 0x01);
input_report_key(dev2, BTN_RIGHT, packet[0] & 0x02);
input_sync(dev2);
}
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_relative_mode(struct psmouse *psmouse)
{
struct ps2dev *ps2dev = &psmouse->ps2dev;
unsigned char param = 0x06;
ps2_command(ps2dev, ¶m, PSMOUSE_CMD_SETRES);
}
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)
{
struct lifebook_data *priv = psmouse->private;
psmouse_reset(psmouse);
if (priv) {
input_unregister_device(priv->dev2);
kfree(priv);
}
psmouse->private = NULL;
}
int lifebook_detect(struct psmouse *psmouse, bool set_properties)
{
if (!lifebook_present)
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;
}
static int lifebook_create_relative_device(struct psmouse *psmouse)
{
struct input_dev *dev2;
struct lifebook_data *priv;
int error = -ENOMEM;
priv = kzalloc(sizeof(struct lifebook_data), GFP_KERNEL);
dev2 = input_allocate_device();
if (!priv || !dev2)
goto err_out;
priv->dev2 = dev2;
snprintf(priv->phys, sizeof(priv->phys),
"%s/input1", psmouse->ps2dev.serio->phys);
dev2->phys = priv->phys;
dev2->name = "PS/2 Touchpad";
dev2->id.bustype = BUS_I8042;
dev2->id.vendor = 0x0002;
dev2->id.product = PSMOUSE_LIFEBOOK;
dev2->id.version = 0x0000;
dev2->dev.parent = &psmouse->ps2dev.serio->dev;
dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
dev2->keybit[BIT_WORD(BTN_LEFT)] =
BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
error = input_register_device(priv->dev2);
if (error)
goto err_out;
psmouse->private = priv;
return 0;
err_out:
input_free_device(dev2);
kfree(priv);
return error;
}
int lifebook_init(struct psmouse *psmouse)
{
struct input_dev *dev1 = psmouse->dev;
int max_coord = lifebook_use_6byte_proto ? 4096 : 1024;
if (lifebook_absolute_mode(psmouse))
return -1;
dev1->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY);
dev1->relbit[0] = 0;
dev1->keybit[BIT_WORD(BTN_MOUSE)] = 0;
dev1->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
input_set_abs_params(dev1, ABS_X, 0, max_coord, 0, 0);
input_set_abs_params(dev1, ABS_Y, 0, max_coord, 0, 0);
if (!desired_serio_phys) {
if (lifebook_create_relative_device(psmouse)) {
lifebook_relative_mode(psmouse);
return -1;
}
}
psmouse->protocol_handler = lifebook_process_byte;
psmouse->set_resolution = lifebook_set_resolution;
psmouse->disconnect = lifebook_disconnect;
psmouse->reconnect = lifebook_absolute_mode;
psmouse->model = lifebook_use_6byte_proto ? 6 : 3;
/*
* 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;
}