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1// SPDX-License-Identifier: GPL-2.0-or-later
2/* ----------------------------------------------------------------------------
3 * touchkit_ps2.c -- Driver for eGalax TouchKit PS/2 Touchscreens
4 *
5 * Copyright (C) 2005 by Stefan Lucke
6 * Copyright (C) 2004 by Daniel Ritz
7 * Copyright (C) by Todd E. Johnson (mtouchusb.c)
8 *
9 * Based upon touchkitusb.c
10 *
11 * Vendor documentation is available at:
12 * http://home.eeti.com.tw/web20/drivers/Software%20Programming%20Guide_v2.0.pdf
13 */
14
15#include <linux/kernel.h>
16
17#include <linux/input.h>
18#include <linux/serio.h>
19#include <linux/libps2.h>
20
21#include "psmouse.h"
22#include "touchkit_ps2.h"
23
24#define TOUCHKIT_MAX_XC 0x07ff
25#define TOUCHKIT_MAX_YC 0x07ff
26
27#define TOUCHKIT_CMD 0x0a
28#define TOUCHKIT_CMD_LENGTH 1
29
30#define TOUCHKIT_CMD_ACTIVE 'A'
31#define TOUCHKIT_CMD_FIRMWARE_VERSION 'D'
32#define TOUCHKIT_CMD_CONTROLLER_TYPE 'E'
33
34#define TOUCHKIT_SEND_PARMS(s, r, c) ((s) << 12 | (r) << 8 | (c))
35
36#define TOUCHKIT_GET_TOUCHED(packet) (((packet)[0]) & 0x01)
37#define TOUCHKIT_GET_X(packet) (((packet)[1] << 7) | (packet)[2])
38#define TOUCHKIT_GET_Y(packet) (((packet)[3] << 7) | (packet)[4])
39
40static psmouse_ret_t touchkit_ps2_process_byte(struct psmouse *psmouse)
41{
42 unsigned char *packet = psmouse->packet;
43 struct input_dev *dev = psmouse->dev;
44
45 if (psmouse->pktcnt != 5)
46 return PSMOUSE_GOOD_DATA;
47
48 input_report_abs(dev, ABS_X, TOUCHKIT_GET_X(packet));
49 input_report_abs(dev, ABS_Y, TOUCHKIT_GET_Y(packet));
50 input_report_key(dev, BTN_TOUCH, TOUCHKIT_GET_TOUCHED(packet));
51 input_sync(dev);
52
53 return PSMOUSE_FULL_PACKET;
54}
55
56int touchkit_ps2_detect(struct psmouse *psmouse, bool set_properties)
57{
58 struct input_dev *dev = psmouse->dev;
59 unsigned char param[3];
60 int command;
61
62 param[0] = TOUCHKIT_CMD_LENGTH;
63 param[1] = TOUCHKIT_CMD_ACTIVE;
64 command = TOUCHKIT_SEND_PARMS(2, 3, TOUCHKIT_CMD);
65
66 if (ps2_command(&psmouse->ps2dev, param, command))
67 return -ENODEV;
68
69 if (param[0] != TOUCHKIT_CMD || param[1] != 0x01 ||
70 param[2] != TOUCHKIT_CMD_ACTIVE)
71 return -ENODEV;
72
73 if (set_properties) {
74 dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
75 dev->keybit[BIT_WORD(BTN_MOUSE)] = 0;
76 dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
77 input_set_abs_params(dev, ABS_X, 0, TOUCHKIT_MAX_XC, 0, 0);
78 input_set_abs_params(dev, ABS_Y, 0, TOUCHKIT_MAX_YC, 0, 0);
79
80 psmouse->vendor = "eGalax";
81 psmouse->name = "Touchscreen";
82 psmouse->protocol_handler = touchkit_ps2_process_byte;
83 psmouse->pktsize = 5;
84 }
85
86 return 0;
87}
1/* ----------------------------------------------------------------------------
2 * touchkit_ps2.c -- Driver for eGalax TouchKit PS/2 Touchscreens
3 *
4 * Copyright (C) 2005 by Stefan Lucke
5 * Copyright (C) 2004 by Daniel Ritz
6 * Copyright (C) by Todd E. Johnson (mtouchusb.c)
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of the
11 * License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 *
22 * Based upon touchkitusb.c
23 *
24 * Vendor documentation is available at:
25 * http://home.eeti.com.tw/web20/drivers/Software%20Programming%20Guide_v2.0.pdf
26 */
27
28#include <linux/kernel.h>
29
30#include <linux/input.h>
31#include <linux/serio.h>
32#include <linux/libps2.h>
33
34#include "psmouse.h"
35#include "touchkit_ps2.h"
36
37#define TOUCHKIT_MAX_XC 0x07ff
38#define TOUCHKIT_MAX_YC 0x07ff
39
40#define TOUCHKIT_CMD 0x0a
41#define TOUCHKIT_CMD_LENGTH 1
42
43#define TOUCHKIT_CMD_ACTIVE 'A'
44#define TOUCHKIT_CMD_FIRMWARE_VERSION 'D'
45#define TOUCHKIT_CMD_CONTROLLER_TYPE 'E'
46
47#define TOUCHKIT_SEND_PARMS(s, r, c) ((s) << 12 | (r) << 8 | (c))
48
49#define TOUCHKIT_GET_TOUCHED(packet) (((packet)[0]) & 0x01)
50#define TOUCHKIT_GET_X(packet) (((packet)[1] << 7) | (packet)[2])
51#define TOUCHKIT_GET_Y(packet) (((packet)[3] << 7) | (packet)[4])
52
53static psmouse_ret_t touchkit_ps2_process_byte(struct psmouse *psmouse)
54{
55 unsigned char *packet = psmouse->packet;
56 struct input_dev *dev = psmouse->dev;
57
58 if (psmouse->pktcnt != 5)
59 return PSMOUSE_GOOD_DATA;
60
61 input_report_abs(dev, ABS_X, TOUCHKIT_GET_X(packet));
62 input_report_abs(dev, ABS_Y, TOUCHKIT_GET_Y(packet));
63 input_report_key(dev, BTN_TOUCH, TOUCHKIT_GET_TOUCHED(packet));
64 input_sync(dev);
65
66 return PSMOUSE_FULL_PACKET;
67}
68
69int touchkit_ps2_detect(struct psmouse *psmouse, bool set_properties)
70{
71 struct input_dev *dev = psmouse->dev;
72 unsigned char param[3];
73 int command;
74
75 param[0] = TOUCHKIT_CMD_LENGTH;
76 param[1] = TOUCHKIT_CMD_ACTIVE;
77 command = TOUCHKIT_SEND_PARMS(2, 3, TOUCHKIT_CMD);
78
79 if (ps2_command(&psmouse->ps2dev, param, command))
80 return -ENODEV;
81
82 if (param[0] != TOUCHKIT_CMD || param[1] != 0x01 ||
83 param[2] != TOUCHKIT_CMD_ACTIVE)
84 return -ENODEV;
85
86 if (set_properties) {
87 dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
88 dev->keybit[BIT_WORD(BTN_MOUSE)] = 0;
89 dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
90 input_set_abs_params(dev, ABS_X, 0, TOUCHKIT_MAX_XC, 0, 0);
91 input_set_abs_params(dev, ABS_Y, 0, TOUCHKIT_MAX_YC, 0, 0);
92
93 psmouse->vendor = "eGalax";
94 psmouse->name = "Touchscreen";
95 psmouse->protocol_handler = touchkit_ps2_process_byte;
96 psmouse->pktsize = 5;
97 }
98
99 return 0;
100}