Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/* ----------------------------------------------------------------------------
|
|
* touchkit_ps2.c -- Driver for eGalax TouchKit PS/2 Touchscreens
|
|
*
|
|
* Copyright (C) 2005 by Stefan Lucke
|
|
* Copyright (C) 2004 by Daniel Ritz
|
|
* Copyright (C) by Todd E. Johnson (mtouchusb.c)
|
|
*
|
|
* Based upon touchkitusb.c
|
|
*
|
|
* Vendor documentation is available at:
|
|
* http://home.eeti.com.tw/web20/drivers/Software%20Programming%20Guide_v2.0.pdf
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/input.h>
|
|
#include <linux/serio.h>
|
|
#include <linux/libps2.h>
|
|
|
|
#include "psmouse.h"
|
|
#include "touchkit_ps2.h"
|
|
|
|
#define TOUCHKIT_MAX_XC 0x07ff
|
|
#define TOUCHKIT_MAX_YC 0x07ff
|
|
|
|
#define TOUCHKIT_CMD 0x0a
|
|
#define TOUCHKIT_CMD_LENGTH 1
|
|
|
|
#define TOUCHKIT_CMD_ACTIVE 'A'
|
|
#define TOUCHKIT_CMD_FIRMWARE_VERSION 'D'
|
|
#define TOUCHKIT_CMD_CONTROLLER_TYPE 'E'
|
|
|
|
#define TOUCHKIT_SEND_PARMS(s, r, c) ((s) << 12 | (r) << 8 | (c))
|
|
|
|
#define TOUCHKIT_GET_TOUCHED(packet) (((packet)[0]) & 0x01)
|
|
#define TOUCHKIT_GET_X(packet) (((packet)[1] << 7) | (packet)[2])
|
|
#define TOUCHKIT_GET_Y(packet) (((packet)[3] << 7) | (packet)[4])
|
|
|
|
static psmouse_ret_t touchkit_ps2_process_byte(struct psmouse *psmouse)
|
|
{
|
|
unsigned char *packet = psmouse->packet;
|
|
struct input_dev *dev = psmouse->dev;
|
|
|
|
if (psmouse->pktcnt != 5)
|
|
return PSMOUSE_GOOD_DATA;
|
|
|
|
input_report_abs(dev, ABS_X, TOUCHKIT_GET_X(packet));
|
|
input_report_abs(dev, ABS_Y, TOUCHKIT_GET_Y(packet));
|
|
input_report_key(dev, BTN_TOUCH, TOUCHKIT_GET_TOUCHED(packet));
|
|
input_sync(dev);
|
|
|
|
return PSMOUSE_FULL_PACKET;
|
|
}
|
|
|
|
int touchkit_ps2_detect(struct psmouse *psmouse, bool set_properties)
|
|
{
|
|
struct input_dev *dev = psmouse->dev;
|
|
unsigned char param[3];
|
|
int command;
|
|
|
|
param[0] = TOUCHKIT_CMD_LENGTH;
|
|
param[1] = TOUCHKIT_CMD_ACTIVE;
|
|
command = TOUCHKIT_SEND_PARMS(2, 3, TOUCHKIT_CMD);
|
|
|
|
if (ps2_command(&psmouse->ps2dev, param, command))
|
|
return -ENODEV;
|
|
|
|
if (param[0] != TOUCHKIT_CMD || param[1] != 0x01 ||
|
|
param[2] != TOUCHKIT_CMD_ACTIVE)
|
|
return -ENODEV;
|
|
|
|
if (set_properties) {
|
|
dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
|
|
dev->keybit[BIT_WORD(BTN_MOUSE)] = 0;
|
|
dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
|
|
input_set_abs_params(dev, ABS_X, 0, TOUCHKIT_MAX_XC, 0, 0);
|
|
input_set_abs_params(dev, ABS_Y, 0, TOUCHKIT_MAX_YC, 0, 0);
|
|
|
|
psmouse->vendor = "eGalax";
|
|
psmouse->name = "Touchscreen";
|
|
psmouse->protocol_handler = touchkit_ps2_process_byte;
|
|
psmouse->pktsize = 5;
|
|
}
|
|
|
|
return 0;
|
|
}
|