mirror of https://gitee.com/openkylin/linux.git
127 lines
3.4 KiB
C
127 lines
3.4 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 int max_y = 1024;
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static struct dmi_system_id lifebook_dmi_table[] = {
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{
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.ident = "Fujitsu Siemens Lifebook B-Sereis",
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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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};
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static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse, struct pt_regs *regs)
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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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input_regs(dev, regs);
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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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max_y - (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_initialize(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 (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
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return -1;
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if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_BAT))
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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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psmouse->set_rate(psmouse, psmouse->rate);
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psmouse->set_resolution(psmouse, psmouse->resolution);
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if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE))
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return -1;
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return 0;
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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, unsigned int max_proto,
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int set_properties)
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{
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if (!dmi_check_system(lifebook_dmi_table) &&
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(max_proto != PSMOUSE_LIFEBOOK) )
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return -1;
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if (set_properties) {
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psmouse->vendor = "Fujitsu Lifebook";
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psmouse->name = "TouchScreen";
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psmouse->dev.evbit[0] = BIT(EV_ABS) | BIT(EV_KEY) | BIT(EV_REL);
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psmouse->dev.keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
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psmouse->dev.keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
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psmouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y);
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input_set_abs_params(&psmouse->dev, ABS_X, 0, 1024, 0, 0);
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input_set_abs_params(&psmouse->dev, ABS_Y, 0, 1024, 0, 0);
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psmouse->protocol_handler = lifebook_process_byte;
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psmouse->disconnect = lifebook_disconnect;
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psmouse->reconnect = lifebook_initialize;
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psmouse->pktsize = 3;
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}
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return lifebook_initialize(psmouse);
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}
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