236 lines
6.2 KiB
C
236 lines
6.2 KiB
C
/*
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* Copyright (c) 1999-2001 Vojtech Pavlik
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*/
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/*
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* Logitech WingMan Warrior joystick driver for Linux
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*/
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/*
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* This program is free warftware; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Should you need to contact me, the author, you can do so either by
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* e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
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* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/input.h>
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#include <linux/serio.h>
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#include <linux/init.h>
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#define DRIVER_DESC "Logitech WingMan Warrior 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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/*
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* Constants.
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*/
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#define WARRIOR_MAX_LENGTH 16
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static char warrior_lengths[] = { 0, 4, 12, 3, 4, 4, 0, 0 };
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/*
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* Per-Warrior data.
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*/
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struct warrior {
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struct input_dev *dev;
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int idx, len;
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unsigned char data[WARRIOR_MAX_LENGTH];
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char phys[32];
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};
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/*
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* warrior_process_packet() decodes packets the driver receives from the
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* Warrior. It updates the data accordingly.
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*/
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static void warrior_process_packet(struct warrior *warrior)
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{
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struct input_dev *dev = warrior->dev;
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unsigned char *data = warrior->data;
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if (!warrior->idx) return;
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switch ((data[0] >> 4) & 7) {
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case 1: /* Button data */
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input_report_key(dev, BTN_TRIGGER, data[3] & 1);
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input_report_key(dev, BTN_THUMB, (data[3] >> 1) & 1);
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input_report_key(dev, BTN_TOP, (data[3] >> 2) & 1);
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input_report_key(dev, BTN_TOP2, (data[3] >> 3) & 1);
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break;
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case 3: /* XY-axis info->data */
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input_report_abs(dev, ABS_X, ((data[0] & 8) << 5) - (data[2] | ((data[0] & 4) << 5)));
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input_report_abs(dev, ABS_Y, (data[1] | ((data[0] & 1) << 7)) - ((data[0] & 2) << 7));
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break;
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case 5: /* Throttle, spinner, hat info->data */
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input_report_abs(dev, ABS_THROTTLE, (data[1] | ((data[0] & 1) << 7)) - ((data[0] & 2) << 7));
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input_report_abs(dev, ABS_HAT0X, (data[3] & 2 ? 1 : 0) - (data[3] & 1 ? 1 : 0));
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input_report_abs(dev, ABS_HAT0Y, (data[3] & 8 ? 1 : 0) - (data[3] & 4 ? 1 : 0));
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input_report_rel(dev, REL_DIAL, (data[2] | ((data[0] & 4) << 5)) - ((data[0] & 8) << 5));
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break;
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}
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input_sync(dev);
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}
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/*
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* warrior_interrupt() is called by the low level driver when characters
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* are ready for us. We then buffer them for further processing, or call the
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* packet processing routine.
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*/
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static irqreturn_t warrior_interrupt(struct serio *serio,
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unsigned char data, unsigned int flags)
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{
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struct warrior *warrior = serio_get_drvdata(serio);
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if (data & 0x80) {
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if (warrior->idx) warrior_process_packet(warrior);
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warrior->idx = 0;
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warrior->len = warrior_lengths[(data >> 4) & 7];
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}
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if (warrior->idx < warrior->len)
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warrior->data[warrior->idx++] = data;
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if (warrior->idx == warrior->len) {
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if (warrior->idx) warrior_process_packet(warrior);
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warrior->idx = 0;
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warrior->len = 0;
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}
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return IRQ_HANDLED;
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}
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/*
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* warrior_disconnect() is the opposite of warrior_connect()
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*/
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static void warrior_disconnect(struct serio *serio)
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{
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struct warrior *warrior = serio_get_drvdata(serio);
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serio_close(serio);
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serio_set_drvdata(serio, NULL);
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input_unregister_device(warrior->dev);
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kfree(warrior);
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}
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/*
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* warrior_connect() is the routine that is called when someone adds a
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* new serio device. It looks for the Warrior, and if found, registers
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* it as an input device.
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*/
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static int warrior_connect(struct serio *serio, struct serio_driver *drv)
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{
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struct warrior *warrior;
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struct input_dev *input_dev;
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int err = -ENOMEM;
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warrior = kzalloc(sizeof(struct warrior), GFP_KERNEL);
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input_dev = input_allocate_device();
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if (!warrior || !input_dev)
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goto fail1;
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warrior->dev = input_dev;
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snprintf(warrior->phys, sizeof(warrior->phys), "%s/input0", serio->phys);
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input_dev->name = "Logitech WingMan Warrior";
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input_dev->phys = warrior->phys;
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input_dev->id.bustype = BUS_RS232;
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input_dev->id.vendor = SERIO_WARRIOR;
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input_dev->id.product = 0x0001;
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input_dev->id.version = 0x0100;
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input_dev->dev.parent = &serio->dev;
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input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL) |
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BIT_MASK(EV_ABS);
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input_dev->keybit[BIT_WORD(BTN_TRIGGER)] = BIT_MASK(BTN_TRIGGER) |
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BIT_MASK(BTN_THUMB) | BIT_MASK(BTN_TOP) | BIT_MASK(BTN_TOP2);
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input_dev->relbit[0] = BIT_MASK(REL_DIAL);
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input_set_abs_params(input_dev, ABS_X, -64, 64, 0, 8);
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input_set_abs_params(input_dev, ABS_Y, -64, 64, 0, 8);
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input_set_abs_params(input_dev, ABS_THROTTLE, -112, 112, 0, 0);
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input_set_abs_params(input_dev, ABS_HAT0X, -1, 1, 0, 0);
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input_set_abs_params(input_dev, ABS_HAT0Y, -1, 1, 0, 0);
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serio_set_drvdata(serio, warrior);
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err = serio_open(serio, drv);
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if (err)
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goto fail2;
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err = input_register_device(warrior->dev);
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if (err)
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goto fail3;
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return 0;
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fail3: serio_close(serio);
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fail2: serio_set_drvdata(serio, NULL);
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fail1: input_free_device(input_dev);
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kfree(warrior);
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return err;
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}
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/*
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* The serio driver structure.
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*/
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static struct serio_device_id warrior_serio_ids[] = {
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{
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.type = SERIO_RS232,
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.proto = SERIO_WARRIOR,
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.id = SERIO_ANY,
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.extra = SERIO_ANY,
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},
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{ 0 }
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};
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MODULE_DEVICE_TABLE(serio, warrior_serio_ids);
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static struct serio_driver warrior_drv = {
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.driver = {
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.name = "warrior",
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},
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.description = DRIVER_DESC,
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.id_table = warrior_serio_ids,
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.interrupt = warrior_interrupt,
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.connect = warrior_connect,
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.disconnect = warrior_disconnect,
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};
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/*
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* The functions for inserting/removing us as a module.
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*/
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static int __init warrior_init(void)
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{
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return serio_register_driver(&warrior_drv);
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}
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static void __exit warrior_exit(void)
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{
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serio_unregister_driver(&warrior_drv);
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}
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module_init(warrior_init);
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module_exit(warrior_exit);
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