2 * Copyright (c) 1995 Jean-Marc Zucconi
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer
10 * in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software withough specific prior written permission
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 * $FreeBSD: src/sys/isa/joy.c,v 1.38.2.1 2001/09/01 05:55:31 murray Exp $
29 * $DragonFly: src/sys/dev/misc/joy/joy.c,v 1.12 2007/10/23 03:04:49 y0netan1 Exp $
32 #include <sys/param.h>
33 #include <sys/systm.h>
35 #include <sys/device.h>
37 #include <sys/kernel.h>
38 #include <sys/module.h>
41 #include <sys/thread2.h>
43 #include <sys/joystick.h>
45 #include <bus/isa/isavar.h>
48 /* The game port can manage 4 buttons and 4 variable resistors (usually 2
49 * joysticks, each with 2 buttons and 2 pots.) via the port at address 0x201.
50 * Getting the state of the buttons is done by reading the game port:
51 * buttons 1-4 correspond to bits 4-7 and resistors 1-4 (X1, Y1, X2, Y2)
53 * if button 1 (resp 2, 3, 4) is pressed, the bit 4 (resp 5, 6, 7) is set to 0
54 * to get the value of a resistor, write the value 0xff at port and
55 * wait until the corresponding bit returns to 0.
58 #define joypart(d) (minor(d)&1)
59 #define UNIT(d) ((minor(d)>>1)&3)
61 #define JOY_TIMEOUT 2000 /* 2 milliseconds */
66 bus_space_handle_t port;
67 int x_off[2], y_off[2];
71 #define JOY_SOFTC(unit) (struct joy_softc *) \
72 devclass_get_softc(joy_devclass,(unit))
74 static int joy_probe (device_t);
75 static int joy_attach (device_t);
78 static d_open_t joyopen;
79 static d_close_t joyclose;
80 static d_read_t joyread;
81 static d_ioctl_t joyioctl;
83 static struct dev_ops joy_ops = {
84 { "joy", CDEV_MAJOR, 0 },
91 devclass_t joy_devclass;
93 static struct isa_pnp_id joy_ids[] = {
94 {0x0100630e, "CSC0001 PnP Joystick"}, /* CSC0001 */
95 {0x0101630e, "CSC0101 PnP Joystick"}, /* CSC0101 */
96 {0x01100002, "ALS0110 PnP Joystick"}, /* @P@1001 */
97 {0x01200002, "ALS0120 PnP Joystick"}, /* @P@2001 */
98 {0x01007316, "ESS0001 PnP Joystick"}, /* ESS0001 */
99 {0x2fb0d041, "Generic PnP Joystick"}, /* PNPb02f */
100 {0x2200a865, "YMH0022 PnP Joystick"}, /* YMH0022 */
101 {0x82719304, NULL}, /* ADS7182 */
106 joy_probe (device_t dev)
108 if (ISA_PNP_PROBE(device_get_parent(dev), dev, joy_ids) == ENXIO)
110 #ifdef WANT_JOYSTICK_CONNECTED
112 outb (dev->id_iobase, 0xff);
113 DELAY (10000); /* 10 ms delay */
114 return (inb (dev->id_iobase) & 0x0f) != 0x0f;
122 joy_attach (device_t dev)
124 int unit = device_get_unit(dev);
126 struct resource *res;
127 struct joy_softc *joy = device_get_softc(dev);
129 res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1, RF_ACTIVE);
132 joy->bt = rman_get_bustag(res);
133 joy->port = rman_get_bushandle(res);
134 joy->timeout[0] = joy->timeout[1] = 0;
135 dev_ops_add(&joy_ops, -1, unit);
136 make_dev(&joy_ops, unit, 0, 0, 0600, "joy%d", unit);
140 static device_method_t joy_methods[] = {
141 DEVMETHOD(device_probe, joy_probe),
142 DEVMETHOD(device_attach, joy_attach),
146 static driver_t joy_isa_driver = {
149 sizeof (struct joy_softc)
152 DRIVER_MODULE(joy, isa, joy_isa_driver, joy_devclass, 0, 0);
153 DRIVER_MODULE(joy, acpi, joy_isa_driver, joy_devclass, 0, 0);
156 joyopen(struct dev_open_args *ap)
158 cdev_t dev = ap->a_head.a_dev;
159 int i = joypart (dev);
160 struct joy_softc *joy = JOY_SOFTC(UNIT(dev));
164 joy->x_off[i] = joy->y_off[i] = 0;
165 joy->timeout[i] = JOY_TIMEOUT;
170 joyclose(struct dev_close_args *ap)
172 cdev_t dev = ap->a_head.a_dev;
173 int i = joypart (dev);
174 struct joy_softc *joy = JOY_SOFTC(UNIT(dev));
181 joyread(struct dev_read_args *ap)
183 cdev_t dev = ap->a_head.a_dev;
184 struct uio *uio = ap->a_uio;
185 struct joy_softc *joy = JOY_SOFTC(UNIT(dev));
186 bus_space_handle_t port = joy->port;
187 bus_space_tag_t bt = joy->bt;
188 struct timespec t, start, end;
190 struct timespec x, y;
195 bus_space_write_1 (bt, port, 0, 0xff);
198 end.tv_nsec = joy->timeout[joypart(dev)] * 1000;
199 timespecadd(&end, &start);
203 while (timespeccmp(&t, &end, <)) {
204 state = bus_space_read_1 (bt, port, 0);
205 if (joypart(dev) == 1)
208 if (!timespecisset(&x) && !(state & 0x01))
210 if (!timespecisset(&y) && !(state & 0x02))
212 if (timespecisset(&x) && timespecisset(&y))
218 if (timespecisset(&x)) {
219 timespecsub(&x, &start);
220 c.x = joy->x_off[joypart(dev)] + x.tv_nsec / 1000;
223 if (timespecisset(&y)) {
224 timespecsub(&y, &start);
225 c.y = joy->y_off[joypart(dev)] + y.tv_nsec / 1000;
230 c.b2 = ~(state >> 1) & 1;
231 return uiomove ((caddr_t)&c, sizeof(struct joystick), uio);
235 joyioctl(struct dev_ioctl_args *ap)
237 cdev_t dev = ap->a_head.a_dev;
238 caddr_t data = ap->a_data;
239 struct joy_softc *joy = JOY_SOFTC(UNIT(dev));
240 int i = joypart (dev);
246 if (x < 1 || x > 10000) /* 10ms maximum! */
251 *(int *) data = joy->timeout[i];
253 case JOY_SET_X_OFFSET:
254 joy->x_off[i] = *(int *) data;
256 case JOY_SET_Y_OFFSET:
257 joy->y_off[i] = *(int *) data;
259 case JOY_GET_X_OFFSET:
260 *(int *) data = joy->x_off[i];
262 case JOY_GET_Y_OFFSET:
263 *(int *) data = joy->y_off[i];