^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* ----------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * touchkit_ps2.c -- Driver for eGalax TouchKit PS/2 Touchscreens
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2005 by Stefan Lucke
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2004 by Daniel Ritz
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (C) by Todd E. Johnson (mtouchusb.c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Based upon touchkitusb.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * Vendor documentation is available at:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * http://home.eeti.com.tw/web20/drivers/Software%20Programming%20Guide_v2.0.pdf
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/serio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/libps2.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include "psmouse.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include "touchkit_ps2.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define TOUCHKIT_MAX_XC 0x07ff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define TOUCHKIT_MAX_YC 0x07ff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define TOUCHKIT_CMD 0x0a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define TOUCHKIT_CMD_LENGTH 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define TOUCHKIT_CMD_ACTIVE 'A'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define TOUCHKIT_CMD_FIRMWARE_VERSION 'D'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define TOUCHKIT_CMD_CONTROLLER_TYPE 'E'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define TOUCHKIT_SEND_PARMS(s, r, c) ((s) << 12 | (r) << 8 | (c))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define TOUCHKIT_GET_TOUCHED(packet) (((packet)[0]) & 0x01)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define TOUCHKIT_GET_X(packet) (((packet)[1] << 7) | (packet)[2])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define TOUCHKIT_GET_Y(packet) (((packet)[3] << 7) | (packet)[4])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static psmouse_ret_t touchkit_ps2_process_byte(struct psmouse *psmouse)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) unsigned char *packet = psmouse->packet;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) struct input_dev *dev = psmouse->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) if (psmouse->pktcnt != 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) return PSMOUSE_GOOD_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) input_report_abs(dev, ABS_X, TOUCHKIT_GET_X(packet));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) input_report_abs(dev, ABS_Y, TOUCHKIT_GET_Y(packet));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) input_report_key(dev, BTN_TOUCH, TOUCHKIT_GET_TOUCHED(packet));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) input_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) return PSMOUSE_FULL_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) int touchkit_ps2_detect(struct psmouse *psmouse, bool set_properties)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) struct input_dev *dev = psmouse->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) unsigned char param[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) int command;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) param[0] = TOUCHKIT_CMD_LENGTH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) param[1] = TOUCHKIT_CMD_ACTIVE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) command = TOUCHKIT_SEND_PARMS(2, 3, TOUCHKIT_CMD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) if (ps2_command(&psmouse->ps2dev, param, command))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) if (param[0] != TOUCHKIT_CMD || param[1] != 0x01 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) param[2] != TOUCHKIT_CMD_ACTIVE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) if (set_properties) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) dev->keybit[BIT_WORD(BTN_MOUSE)] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) input_set_abs_params(dev, ABS_X, 0, TOUCHKIT_MAX_XC, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) input_set_abs_params(dev, ABS_Y, 0, TOUCHKIT_MAX_YC, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) psmouse->vendor = "eGalax";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) psmouse->name = "Touchscreen";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) psmouse->protocol_handler = touchkit_ps2_process_byte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) psmouse->pktsize = 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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