168 lines
4.3 KiB
C
168 lines
4.3 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 struct dmi_system_id lifebook_dmi_table[] = {
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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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},
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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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unsigned char *packet = psmouse->packet;
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struct input_dev *dev = psmouse->dev;
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if (psmouse->pktcnt != 3)
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return PSMOUSE_GOOD_DATA;
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/* calculate X and Y */
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if ((packet[0] & 0x08) == 0x00) {
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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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} else {
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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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}
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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 = 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 (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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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, 1024, 0, 0);
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input_set_abs_params(input_dev, ABS_Y, 0, 1024, 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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psmouse->pktsize = 3;
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return 0;
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}
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