blob: e291aa59742e7c31c85e8f220a5248c661916c80 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * Manuel Jander.
3 *
4 * Based on the work of:
5 * Vojtech Pavlik
6 * Raymond Ingles
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 * Should you need to contact me, the author, you can do so either by
23 * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
24 * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
25 *
26 * Based 90% on Vojtech Pavlik pcigame driver.
27 * Merged and modified by Manuel Jander, for the OpenVortex
28 * driver. (email: mjander@embedded.cl).
29 */
30
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#include <linux/time.h>
32#include <linux/delay.h>
33#include <linux/init.h>
34#include <sound/core.h>
35#include "au88x0.h"
36#include <linux/gameport.h>
37
38#if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
39
40#define VORTEX_GAME_DWAIT 20 /* 20 ms */
41
42static unsigned char vortex_game_read(struct gameport *gameport)
43{
44 vortex_t *vortex = gameport_get_port_data(gameport);
45 return hwread(vortex->mmio, VORTEX_GAME_LEGACY);
46}
47
48static void vortex_game_trigger(struct gameport *gameport)
49{
50 vortex_t *vortex = gameport_get_port_data(gameport);
51 hwwrite(vortex->mmio, VORTEX_GAME_LEGACY, 0xff);
52}
53
54static int
55vortex_game_cooked_read(struct gameport *gameport, int *axes, int *buttons)
56{
57 vortex_t *vortex = gameport_get_port_data(gameport);
58 int i;
59
60 *buttons = (~hwread(vortex->mmio, VORTEX_GAME_LEGACY) >> 4) & 0xf;
61
62 for (i = 0; i < 4; i++) {
63 axes[i] =
64 hwread(vortex->mmio, VORTEX_GAME_AXIS + (i * AXIS_SIZE));
65 if (axes[i] == AXIS_RANGE)
66 axes[i] = -1;
67 }
68 return 0;
69}
70
71static int vortex_game_open(struct gameport *gameport, int mode)
72{
73 vortex_t *vortex = gameport_get_port_data(gameport);
74
75 switch (mode) {
76 case GAMEPORT_MODE_COOKED:
77 hwwrite(vortex->mmio, VORTEX_CTRL2,
78 hwread(vortex->mmio,
79 VORTEX_CTRL2) | CTRL2_GAME_ADCMODE);
80 msleep(VORTEX_GAME_DWAIT);
81 return 0;
82 case GAMEPORT_MODE_RAW:
83 hwwrite(vortex->mmio, VORTEX_CTRL2,
84 hwread(vortex->mmio,
85 VORTEX_CTRL2) & ~CTRL2_GAME_ADCMODE);
86 return 0;
87 default:
88 return -1;
89 }
90
91 return 0;
92}
93
94static int __devinit vortex_gameport_register(vortex_t * vortex)
95{
96 struct gameport *gp;
97
98 vortex->gameport = gp = gameport_allocate_port();
99 if (!gp) {
100 printk(KERN_ERR "vortex: cannot allocate memory for gameport\n");
101 return -ENOMEM;
102 };
103
104 gameport_set_name(gp, "AU88x0 Gameport");
105 gameport_set_phys(gp, "pci%s/gameport0", pci_name(vortex->pci_dev));
106 gameport_set_dev_parent(gp, &vortex->pci_dev->dev);
107
108 gp->read = vortex_game_read;
109 gp->trigger = vortex_game_trigger;
110 gp->cooked_read = vortex_game_cooked_read;
111 gp->open = vortex_game_open;
112
113 gameport_set_port_data(gp, vortex);
114 gp->fuzz = 64;
115
116 gameport_register_port(gp);
117
118 return 0;
119}
120
121static void vortex_gameport_unregister(vortex_t * vortex)
122{
123 if (vortex->gameport) {
124 gameport_unregister_port(vortex->gameport);
125 vortex->gameport = NULL;
126 }
127}
128
129#else
130static inline int vortex_gameport_register(vortex_t * vortex) { return -ENOSYS; }
131static inline void vortex_gameport_unregister(vortex_t * vortex) { }
132#endif