298 lines
6.9 KiB
C
298 lines
6.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2001 Vojtech Pavlik
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*
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* Based on the work of:
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* Toby Deshane
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*/
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/*
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* InterAct digital gamepad/joystick driver for Linux
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*/
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/*
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*/
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/delay.h>
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#include <linux/gameport.h>
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#include <linux/input.h>
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#include <linux/jiffies.h>
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#define DRIVER_DESC "InterAct digital joystick driver"
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MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
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#define INTERACT_MAX_START 600 /* 400 us */
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#define INTERACT_MAX_STROBE 60 /* 40 us */
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#define INTERACT_MAX_LENGTH 32 /* 32 bits */
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#define INTERACT_TYPE_HHFX 0 /* HammerHead/FX */
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#define INTERACT_TYPE_PP8D 1 /* ProPad 8 */
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struct interact {
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struct gameport *gameport;
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struct input_dev *dev;
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int bads;
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int reads;
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unsigned char type;
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unsigned char length;
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char phys[32];
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};
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static short interact_abs_hhfx[] =
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{ ABS_RX, ABS_RY, ABS_X, ABS_Y, ABS_HAT0X, ABS_HAT0Y, -1 };
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static short interact_abs_pp8d[] =
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{ ABS_X, ABS_Y, -1 };
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static short interact_btn_hhfx[] =
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{ BTN_TR, BTN_X, BTN_Y, BTN_Z, BTN_A, BTN_B, BTN_C, BTN_TL, BTN_TL2, BTN_TR2, BTN_MODE, BTN_SELECT, -1 };
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static short interact_btn_pp8d[] =
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{ BTN_C, BTN_TL, BTN_TR, BTN_A, BTN_B, BTN_Y, BTN_Z, BTN_X, -1 };
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struct interact_type {
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int id;
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short *abs;
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short *btn;
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char *name;
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unsigned char length;
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unsigned char b8;
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};
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static struct interact_type interact_type[] = {
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{ 0x6202, interact_abs_hhfx, interact_btn_hhfx, "InterAct HammerHead/FX", 32, 4 },
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{ 0x53f8, interact_abs_pp8d, interact_btn_pp8d, "InterAct ProPad 8 Digital", 16, 0 },
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{ 0 }};
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/*
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* interact_read_packet() reads and InterAct joystick data.
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*/
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static int interact_read_packet(struct gameport *gameport, int length, u32 *data)
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{
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unsigned long flags;
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unsigned char u, v;
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unsigned int t, s;
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int i;
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i = 0;
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data[0] = data[1] = data[2] = 0;
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t = gameport_time(gameport, INTERACT_MAX_START);
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s = gameport_time(gameport, INTERACT_MAX_STROBE);
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local_irq_save(flags);
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gameport_trigger(gameport);
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v = gameport_read(gameport);
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while (t > 0 && i < length) {
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t--;
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u = v; v = gameport_read(gameport);
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if (v & ~u & 0x40) {
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data[0] = (data[0] << 1) | ((v >> 4) & 1);
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data[1] = (data[1] << 1) | ((v >> 5) & 1);
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data[2] = (data[2] << 1) | ((v >> 7) & 1);
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i++;
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t = s;
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}
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}
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local_irq_restore(flags);
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return i;
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}
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/*
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* interact_poll() reads and analyzes InterAct joystick data.
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*/
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static void interact_poll(struct gameport *gameport)
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{
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struct interact *interact = gameport_get_drvdata(gameport);
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struct input_dev *dev = interact->dev;
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u32 data[3];
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int i;
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interact->reads++;
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if (interact_read_packet(interact->gameport, interact->length, data) < interact->length) {
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interact->bads++;
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} else {
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for (i = 0; i < 3; i++)
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data[i] <<= INTERACT_MAX_LENGTH - interact->length;
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switch (interact->type) {
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case INTERACT_TYPE_HHFX:
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for (i = 0; i < 4; i++)
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input_report_abs(dev, interact_abs_hhfx[i], (data[i & 1] >> ((i >> 1) << 3)) & 0xff);
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for (i = 0; i < 2; i++)
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input_report_abs(dev, ABS_HAT0Y - i,
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((data[1] >> ((i << 1) + 17)) & 1) - ((data[1] >> ((i << 1) + 16)) & 1));
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for (i = 0; i < 8; i++)
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input_report_key(dev, interact_btn_hhfx[i], (data[0] >> (i + 16)) & 1);
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for (i = 0; i < 4; i++)
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input_report_key(dev, interact_btn_hhfx[i + 8], (data[1] >> (i + 20)) & 1);
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break;
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case INTERACT_TYPE_PP8D:
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for (i = 0; i < 2; i++)
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input_report_abs(dev, interact_abs_pp8d[i],
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((data[0] >> ((i << 1) + 20)) & 1) - ((data[0] >> ((i << 1) + 21)) & 1));
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for (i = 0; i < 8; i++)
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input_report_key(dev, interact_btn_pp8d[i], (data[1] >> (i + 16)) & 1);
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break;
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}
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}
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input_sync(dev);
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}
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/*
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* interact_open() is a callback from the input open routine.
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*/
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static int interact_open(struct input_dev *dev)
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{
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struct interact *interact = input_get_drvdata(dev);
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gameport_start_polling(interact->gameport);
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return 0;
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}
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/*
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* interact_close() is a callback from the input close routine.
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*/
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static void interact_close(struct input_dev *dev)
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{
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struct interact *interact = input_get_drvdata(dev);
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gameport_stop_polling(interact->gameport);
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}
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/*
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* interact_connect() probes for InterAct joysticks.
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*/
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static int interact_connect(struct gameport *gameport, struct gameport_driver *drv)
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{
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struct interact *interact;
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struct input_dev *input_dev;
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__u32 data[3];
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int i, t;
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int err;
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interact = kzalloc(sizeof(struct interact), GFP_KERNEL);
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input_dev = input_allocate_device();
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if (!interact || !input_dev) {
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err = -ENOMEM;
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goto fail1;
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}
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interact->gameport = gameport;
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interact->dev = input_dev;
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gameport_set_drvdata(gameport, interact);
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err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
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if (err)
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goto fail1;
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i = interact_read_packet(gameport, INTERACT_MAX_LENGTH * 2, data);
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if (i != 32 || (data[0] >> 24) != 0x0c || (data[1] >> 24) != 0x02) {
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err = -ENODEV;
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goto fail2;
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}
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for (i = 0; interact_type[i].length; i++)
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if (interact_type[i].id == (data[2] >> 16))
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break;
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if (!interact_type[i].length) {
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printk(KERN_WARNING "interact.c: Unknown joystick on %s. [len %d d0 %08x d1 %08x i2 %08x]\n",
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gameport->phys, i, data[0], data[1], data[2]);
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err = -ENODEV;
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goto fail2;
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}
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gameport_set_poll_handler(gameport, interact_poll);
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gameport_set_poll_interval(gameport, 20);
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snprintf(interact->phys, sizeof(interact->phys), "%s/input0", gameport->phys);
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interact->type = i;
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interact->length = interact_type[i].length;
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input_dev->name = interact_type[i].name;
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input_dev->phys = interact->phys;
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input_dev->id.bustype = BUS_GAMEPORT;
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input_dev->id.vendor = GAMEPORT_ID_VENDOR_INTERACT;
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input_dev->id.product = interact_type[i].id;
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input_dev->id.version = 0x0100;
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input_dev->dev.parent = &gameport->dev;
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input_set_drvdata(input_dev, interact);
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input_dev->open = interact_open;
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input_dev->close = interact_close;
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input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
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for (i = 0; (t = interact_type[interact->type].abs[i]) >= 0; i++) {
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if (i < interact_type[interact->type].b8)
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input_set_abs_params(input_dev, t, 0, 255, 0, 0);
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else
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input_set_abs_params(input_dev, t, -1, 1, 0, 0);
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}
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for (i = 0; (t = interact_type[interact->type].btn[i]) >= 0; i++)
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__set_bit(t, input_dev->keybit);
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err = input_register_device(interact->dev);
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if (err)
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goto fail2;
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return 0;
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fail2: gameport_close(gameport);
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fail1: gameport_set_drvdata(gameport, NULL);
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input_free_device(input_dev);
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kfree(interact);
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return err;
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}
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static void interact_disconnect(struct gameport *gameport)
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{
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struct interact *interact = gameport_get_drvdata(gameport);
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input_unregister_device(interact->dev);
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gameport_close(gameport);
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gameport_set_drvdata(gameport, NULL);
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kfree(interact);
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}
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static struct gameport_driver interact_drv = {
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.driver = {
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.name = "interact",
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},
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.description = DRIVER_DESC,
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.connect = interact_connect,
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.disconnect = interact_disconnect,
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};
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module_gameport_driver(interact_drv);
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