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/drivers/input/joystick/warrior.c

https://bitbucket.org/evzijst/gittest
C | 248 lines | 146 code | 46 blank | 56 comment | 12 complexity | ee523c03da4fa76cd9f567569707dbee MD5 | raw file
  1/*
  2 * $Id: warrior.c,v 1.14 2002/01/22 20:32:10 vojtech Exp $
  3 *
  4 *  Copyright (c) 1999-2001 Vojtech Pavlik
  5 */
  6
  7/*
  8 * Logitech WingMan Warrior joystick driver for Linux
  9 */
 10
 11/*
 12 * This program is free warftware; you can redistribute it and/or modify
 13 * it under the terms of the GNU General Public License as published by
 14 * the Free Software Foundation; either version 2 of the License, or
 15 * (at your option) any later version.
 16 *
 17 * This program is distributed in the hope that it will be useful,
 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 20 * GNU General Public License for more details.
 21 *
 22 * You should have received a copy of the GNU General Public License
 23 * along with this program; if not, write to the Free Software
 24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 25 *
 26 *  Should you need to contact me, the author, you can do so either by
 27 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
 28 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
 29 */
 30
 31#include <linux/kernel.h>
 32#include <linux/module.h>
 33#include <linux/slab.h>
 34#include <linux/input.h>
 35#include <linux/serio.h>
 36#include <linux/init.h>
 37
 38#define DRIVER_DESC	"Logitech WingMan Warrior joystick driver"
 39
 40MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
 41MODULE_DESCRIPTION(DRIVER_DESC);
 42MODULE_LICENSE("GPL");
 43
 44/*
 45 * Constants.
 46 */
 47
 48#define WARRIOR_MAX_LENGTH	16
 49static char warrior_lengths[] = { 0, 4, 12, 3, 4, 4, 0, 0 };
 50static char *warrior_name = "Logitech WingMan Warrior";
 51
 52/*
 53 * Per-Warrior data.
 54 */
 55
 56struct warrior {
 57	struct input_dev dev;
 58	int idx, len;
 59	unsigned char data[WARRIOR_MAX_LENGTH];
 60	char phys[32];
 61};
 62
 63/*
 64 * warrior_process_packet() decodes packets the driver receives from the
 65 * Warrior. It updates the data accordingly.
 66 */
 67
 68static void warrior_process_packet(struct warrior *warrior, struct pt_regs *regs)
 69{
 70	struct input_dev *dev = &warrior->dev;
 71	unsigned char *data = warrior->data;
 72
 73	if (!warrior->idx) return;
 74
 75	input_regs(dev, regs);
 76
 77	switch ((data[0] >> 4) & 7) {
 78		case 1:					/* Button data */
 79			input_report_key(dev, BTN_TRIGGER,  data[3]       & 1);
 80			input_report_key(dev, BTN_THUMB,   (data[3] >> 1) & 1);
 81			input_report_key(dev, BTN_TOP,     (data[3] >> 2) & 1);
 82			input_report_key(dev, BTN_TOP2,    (data[3] >> 3) & 1);
 83			break;
 84		case 3:					/* XY-axis info->data */
 85			input_report_abs(dev, ABS_X, ((data[0] & 8) << 5) - (data[2] | ((data[0] & 4) << 5)));
 86			input_report_abs(dev, ABS_Y, (data[1] | ((data[0] & 1) << 7)) - ((data[0] & 2) << 7));
 87			break;
 88		case 5:					/* Throttle, spinner, hat info->data */
 89			input_report_abs(dev, ABS_THROTTLE, (data[1] | ((data[0] & 1) << 7)) - ((data[0] & 2) << 7));
 90			input_report_abs(dev, ABS_HAT0X, (data[3] & 2 ? 1 : 0) - (data[3] & 1 ? 1 : 0));
 91			input_report_abs(dev, ABS_HAT0Y, (data[3] & 8 ? 1 : 0) - (data[3] & 4 ? 1 : 0));
 92			input_report_rel(dev, REL_DIAL,  (data[2] | ((data[0] & 4) << 5)) - ((data[0] & 8) << 5));
 93			break;
 94	}
 95	input_sync(dev);
 96}
 97
 98/*
 99 * warrior_interrupt() is called by the low level driver when characters
100 * are ready for us. We then buffer them for further processing, or call the
101 * packet processing routine.
102 */
103
104static irqreturn_t warrior_interrupt(struct serio *serio,
105		unsigned char data, unsigned int flags, struct pt_regs *regs)
106{
107	struct warrior *warrior = serio_get_drvdata(serio);
108
109	if (data & 0x80) {
110		if (warrior->idx) warrior_process_packet(warrior, regs);
111		warrior->idx = 0;
112		warrior->len = warrior_lengths[(data >> 4) & 7];
113	}
114
115	if (warrior->idx < warrior->len)
116		warrior->data[warrior->idx++] = data;
117
118	if (warrior->idx == warrior->len) {
119		if (warrior->idx) warrior_process_packet(warrior, regs);
120		warrior->idx = 0;
121		warrior->len = 0;
122	}
123	return IRQ_HANDLED;
124}
125
126/*
127 * warrior_disconnect() is the opposite of warrior_connect()
128 */
129
130static void warrior_disconnect(struct serio *serio)
131{
132	struct warrior *warrior = serio_get_drvdata(serio);
133
134	input_unregister_device(&warrior->dev);
135	serio_close(serio);
136	serio_set_drvdata(serio, NULL);
137	kfree(warrior);
138}
139
140/*
141 * warrior_connect() is the routine that is called when someone adds a
142 * new serio device. It looks for the Warrior, and if found, registers
143 * it as an input device.
144 */
145
146static int warrior_connect(struct serio *serio, struct serio_driver *drv)
147{
148	struct warrior *warrior;
149	int i;
150	int err;
151
152	if (!(warrior = kmalloc(sizeof(struct warrior), GFP_KERNEL)))
153		return -ENOMEM;
154
155	memset(warrior, 0, sizeof(struct warrior));
156
157	warrior->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REL) | BIT(EV_ABS);
158	warrior->dev.keybit[LONG(BTN_TRIGGER)] = BIT(BTN_TRIGGER) | BIT(BTN_THUMB) | BIT(BTN_TOP) | BIT(BTN_TOP2);
159	warrior->dev.relbit[0] = BIT(REL_DIAL);
160	warrior->dev.absbit[0] = BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_THROTTLE) | BIT(ABS_HAT0X) | BIT(ABS_HAT0Y);
161
162	sprintf(warrior->phys, "%s/input0", serio->phys);
163
164	init_input_dev(&warrior->dev);
165	warrior->dev.name = warrior_name;
166	warrior->dev.phys = warrior->phys;
167	warrior->dev.id.bustype = BUS_RS232;
168	warrior->dev.id.vendor = SERIO_WARRIOR;
169	warrior->dev.id.product = 0x0001;
170	warrior->dev.id.version = 0x0100;
171	warrior->dev.dev = &serio->dev;
172
173	for (i = 0; i < 2; i++) {
174		warrior->dev.absmax[ABS_X+i] = -64;
175		warrior->dev.absmin[ABS_X+i] =  64;
176		warrior->dev.absflat[ABS_X+i] = 8;
177	}
178
179	warrior->dev.absmax[ABS_THROTTLE] = -112;
180	warrior->dev.absmin[ABS_THROTTLE] =  112;
181
182	for (i = 0; i < 2; i++) {
183		warrior->dev.absmax[ABS_HAT0X+i] = -1;
184		warrior->dev.absmin[ABS_HAT0X+i] =  1;
185	}
186
187	warrior->dev.private = warrior;
188
189	serio_set_drvdata(serio, warrior);
190
191	err = serio_open(serio, drv);
192	if (err) {
193		serio_set_drvdata(serio, NULL);
194		kfree(warrior);
195		return err;
196	}
197
198	input_register_device(&warrior->dev);
199
200	printk(KERN_INFO "input: Logitech WingMan Warrior on %s\n", serio->phys);
201
202	return 0;
203}
204
205/*
206 * The serio driver structure.
207 */
208
209static struct serio_device_id warrior_serio_ids[] = {
210	{
211		.type	= SERIO_RS232,
212		.proto	= SERIO_WARRIOR,
213		.id	= SERIO_ANY,
214		.extra	= SERIO_ANY,
215	},
216	{ 0 }
217};
218
219MODULE_DEVICE_TABLE(serio, warrior_serio_ids);
220
221static struct serio_driver warrior_drv = {
222	.driver		= {
223		.name	= "warrior",
224	},
225	.description	= DRIVER_DESC,
226	.id_table	= warrior_serio_ids,
227	.interrupt	= warrior_interrupt,
228	.connect	= warrior_connect,
229	.disconnect	= warrior_disconnect,
230};
231
232/*
233 * The functions for inserting/removing us as a module.
234 */
235
236static int __init warrior_init(void)
237{
238	serio_register_driver(&warrior_drv);
239	return 0;
240}
241
242static void __exit warrior_exit(void)
243{
244	serio_unregister_driver(&warrior_drv);
245}
246
247module_init(warrior_init);
248module_exit(warrior_exit);