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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/input/joystick/stinger.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/input/joystick/stinger.c')
-rw-r--r--drivers/input/joystick/stinger.c236
1 files changed, 236 insertions, 0 deletions
diff --git a/drivers/input/joystick/stinger.c b/drivers/input/joystick/stinger.c
new file mode 100644
index 000000000000..6f6e6753d590
--- /dev/null
+++ b/drivers/input/joystick/stinger.c
@@ -0,0 +1,236 @@
1/*
2 * $Id: stinger.c,v 1.10 2002/01/22 20:29:31 vojtech Exp $
3 *
4 * Copyright (c) 2000-2001 Vojtech Pavlik
5 * Copyright (c) 2000 Mark Fletcher
6 */
7
8/*
9 * Gravis Stinger gamepad driver for Linux
10 */
11
12/*
13 * This program is free warftware; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 *
27 * Should you need to contact me, the author, you can do so either by
28 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
29 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
30 */
31
32#include <linux/kernel.h>
33#include <linux/module.h>
34#include <linux/slab.h>
35#include <linux/input.h>
36#include <linux/serio.h>
37#include <linux/init.h>
38
39#define DRIVER_DESC "Gravis Stinger gamepad driver"
40
41MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
42MODULE_DESCRIPTION(DRIVER_DESC);
43MODULE_LICENSE("GPL");
44
45/*
46 * Constants.
47 */
48
49#define STINGER_MAX_LENGTH 8
50
51static char *stinger_name = "Gravis Stinger";
52
53/*
54 * Per-Stinger data.
55 */
56
57struct stinger {
58 struct input_dev dev;
59 int idx;
60 unsigned char data[STINGER_MAX_LENGTH];
61 char phys[32];
62};
63
64/*
65 * stinger_process_packet() decodes packets the driver receives from the
66 * Stinger. It updates the data accordingly.
67 */
68
69static void stinger_process_packet(struct stinger *stinger, struct pt_regs *regs)
70{
71 struct input_dev *dev = &stinger->dev;
72 unsigned char *data = stinger->data;
73
74 if (!stinger->idx) return;
75
76 input_regs(dev, regs);
77
78 input_report_key(dev, BTN_A, ((data[0] & 0x20) >> 5));
79 input_report_key(dev, BTN_B, ((data[0] & 0x10) >> 4));
80 input_report_key(dev, BTN_C, ((data[0] & 0x08) >> 3));
81 input_report_key(dev, BTN_X, ((data[0] & 0x04) >> 2));
82 input_report_key(dev, BTN_Y, ((data[3] & 0x20) >> 5));
83 input_report_key(dev, BTN_Z, ((data[3] & 0x10) >> 4));
84 input_report_key(dev, BTN_TL, ((data[3] & 0x08) >> 3));
85 input_report_key(dev, BTN_TR, ((data[3] & 0x04) >> 2));
86 input_report_key(dev, BTN_SELECT, ((data[3] & 0x02) >> 1));
87 input_report_key(dev, BTN_START, (data[3] & 0x01));
88
89 input_report_abs(dev, ABS_X, (data[1] & 0x3F) - ((data[0] & 0x01) << 6));
90 input_report_abs(dev, ABS_Y, ((data[0] & 0x02) << 5) - (data[2] & 0x3F));
91
92 input_sync(dev);
93
94 return;
95}
96
97/*
98 * stinger_interrupt() is called by the low level driver when characters
99 * are ready for us. We then buffer them for further processing, or call the
100 * packet processing routine.
101 */
102
103static irqreturn_t stinger_interrupt(struct serio *serio,
104 unsigned char data, unsigned int flags, struct pt_regs *regs)
105{
106 struct stinger *stinger = serio_get_drvdata(serio);
107
108 /* All Stinger packets are 4 bytes */
109
110 if (stinger->idx < STINGER_MAX_LENGTH)
111 stinger->data[stinger->idx++] = data;
112
113 if (stinger->idx == 4) {
114 stinger_process_packet(stinger, regs);
115 stinger->idx = 0;
116 }
117
118 return IRQ_HANDLED;
119}
120
121/*
122 * stinger_disconnect() is the opposite of stinger_connect()
123 */
124
125static void stinger_disconnect(struct serio *serio)
126{
127 struct stinger *stinger = serio_get_drvdata(serio);
128
129 input_unregister_device(&stinger->dev);
130 serio_close(serio);
131 serio_set_drvdata(serio, NULL);
132 kfree(stinger);
133}
134
135/*
136 * stinger_connect() is the routine that is called when someone adds a
137 * new serio device that supports Stinger protocol and registers it as
138 * an input device.
139 */
140
141static int stinger_connect(struct serio *serio, struct serio_driver *drv)
142{
143 struct stinger *stinger;
144 int i;
145 int err;
146
147 if (!(stinger = kmalloc(sizeof(struct stinger), GFP_KERNEL)))
148 return -ENOMEM;
149
150 memset(stinger, 0, sizeof(struct stinger));
151
152 stinger->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
153 stinger->dev.keybit[LONG(BTN_A)] = BIT(BTN_A) | BIT(BTN_B) | BIT(BTN_C) | BIT(BTN_X) | \
154 BIT(BTN_Y) | BIT(BTN_Z) | BIT(BTN_TL) | BIT(BTN_TR) | \
155 BIT(BTN_START) | BIT(BTN_SELECT);
156 stinger->dev.absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
157
158 sprintf(stinger->phys, "%s/serio0", serio->phys);
159
160 init_input_dev(&stinger->dev);
161 stinger->dev.name = stinger_name;
162 stinger->dev.phys = stinger->phys;
163 stinger->dev.id.bustype = BUS_RS232;
164 stinger->dev.id.vendor = SERIO_STINGER;
165 stinger->dev.id.product = 0x0001;
166 stinger->dev.id.version = 0x0100;
167 stinger->dev.dev = &serio->dev;
168
169 for (i = 0; i < 2; i++) {
170 stinger->dev.absmax[ABS_X+i] = 64;
171 stinger->dev.absmin[ABS_X+i] = -64;
172 stinger->dev.absflat[ABS_X+i] = 4;
173 }
174
175 stinger->dev.private = stinger;
176
177 serio_set_drvdata(serio, stinger);
178
179 err = serio_open(serio, drv);
180 if (err) {
181 serio_set_drvdata(serio, NULL);
182 kfree(stinger);
183 return err;
184 }
185
186 input_register_device(&stinger->dev);
187
188 printk(KERN_INFO "input: %s on %s\n", stinger_name, serio->phys);
189
190 return 0;
191}
192
193/*
194 * The serio driver structure.
195 */
196
197static struct serio_device_id stinger_serio_ids[] = {
198 {
199 .type = SERIO_RS232,
200 .proto = SERIO_STINGER,
201 .id = SERIO_ANY,
202 .extra = SERIO_ANY,
203 },
204 { 0 }
205};
206
207MODULE_DEVICE_TABLE(serio, stinger_serio_ids);
208
209static struct serio_driver stinger_drv = {
210 .driver = {
211 .name = "stinger",
212 },
213 .description = DRIVER_DESC,
214 .id_table = stinger_serio_ids,
215 .interrupt = stinger_interrupt,
216 .connect = stinger_connect,
217 .disconnect = stinger_disconnect,
218};
219
220/*
221 * The functions for inserting/removing us as a module.
222 */
223
224static int __init stinger_init(void)
225{
226 serio_register_driver(&stinger_drv);
227 return 0;
228}
229
230static void __exit stinger_exit(void)
231{
232 serio_unregister_driver(&stinger_drv);
233}
234
235module_init(stinger_init);
236module_exit(stinger_exit);