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1da177e4 LT |
1 | /* |
2 | * $Id: au88x0_game.c,v 1.9 2003/09/22 03:51:28 mjander Exp $ | |
3 | * | |
4 | * Manuel Jander. | |
5 | * | |
6 | * Based on the work of: | |
7 | * Vojtech Pavlik | |
8 | * Raymond Ingles | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
23 | * | |
24 | * Should you need to contact me, the author, you can do so either by | |
25 | * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail: | |
26 | * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic | |
27 | * | |
28 | * Based 90% on Vojtech Pavlik pcigame driver. | |
29 | * Merged and modified by Manuel Jander, for the OpenVortex | |
30 | * driver. (email: mjander@embedded.cl). | |
31 | */ | |
32 | ||
33 | #include <sound/driver.h> | |
34 | #include <linux/time.h> | |
35 | #include <linux/delay.h> | |
36 | #include <linux/init.h> | |
37 | #include <sound/core.h> | |
38 | #include "au88x0.h" | |
39 | #include <linux/gameport.h> | |
40 | ||
41 | #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE)) | |
42 | ||
43 | #define VORTEX_GAME_DWAIT 20 /* 20 ms */ | |
44 | ||
45 | static unsigned char vortex_game_read(struct gameport *gameport) | |
46 | { | |
47 | vortex_t *vortex = gameport_get_port_data(gameport); | |
48 | return hwread(vortex->mmio, VORTEX_GAME_LEGACY); | |
49 | } | |
50 | ||
51 | static void vortex_game_trigger(struct gameport *gameport) | |
52 | { | |
53 | vortex_t *vortex = gameport_get_port_data(gameport); | |
54 | hwwrite(vortex->mmio, VORTEX_GAME_LEGACY, 0xff); | |
55 | } | |
56 | ||
57 | static int | |
58 | vortex_game_cooked_read(struct gameport *gameport, int *axes, int *buttons) | |
59 | { | |
60 | vortex_t *vortex = gameport_get_port_data(gameport); | |
61 | int i; | |
62 | ||
63 | *buttons = (~hwread(vortex->mmio, VORTEX_GAME_LEGACY) >> 4) & 0xf; | |
64 | ||
65 | for (i = 0; i < 4; i++) { | |
66 | axes[i] = | |
67 | hwread(vortex->mmio, VORTEX_GAME_AXIS + (i * AXIS_SIZE)); | |
68 | if (axes[i] == AXIS_RANGE) | |
69 | axes[i] = -1; | |
70 | } | |
71 | return 0; | |
72 | } | |
73 | ||
74 | static int vortex_game_open(struct gameport *gameport, int mode) | |
75 | { | |
76 | vortex_t *vortex = gameport_get_port_data(gameport); | |
77 | ||
78 | switch (mode) { | |
79 | case GAMEPORT_MODE_COOKED: | |
80 | hwwrite(vortex->mmio, VORTEX_CTRL2, | |
81 | hwread(vortex->mmio, | |
82 | VORTEX_CTRL2) | CTRL2_GAME_ADCMODE); | |
83 | msleep(VORTEX_GAME_DWAIT); | |
84 | return 0; | |
85 | case GAMEPORT_MODE_RAW: | |
86 | hwwrite(vortex->mmio, VORTEX_CTRL2, | |
87 | hwread(vortex->mmio, | |
88 | VORTEX_CTRL2) & ~CTRL2_GAME_ADCMODE); | |
89 | return 0; | |
90 | default: | |
91 | return -1; | |
92 | } | |
93 | ||
94 | return 0; | |
95 | } | |
96 | ||
97 | static int __devinit vortex_gameport_register(vortex_t * vortex) | |
98 | { | |
99 | struct gameport *gp; | |
100 | ||
101 | vortex->gameport = gp = gameport_allocate_port(); | |
102 | if (!gp) { | |
103 | printk(KERN_ERR "vortex: cannot allocate memory for gameport\n"); | |
104 | return -ENOMEM; | |
105 | }; | |
106 | ||
107 | gameport_set_name(gp, "AU88x0 Gameport"); | |
108 | gameport_set_phys(gp, "pci%s/gameport0", pci_name(vortex->pci_dev)); | |
109 | gameport_set_dev_parent(gp, &vortex->pci_dev->dev); | |
110 | ||
111 | gp->read = vortex_game_read; | |
112 | gp->trigger = vortex_game_trigger; | |
113 | gp->cooked_read = vortex_game_cooked_read; | |
114 | gp->open = vortex_game_open; | |
115 | ||
116 | gameport_set_port_data(gp, vortex); | |
117 | gp->fuzz = 64; | |
118 | ||
119 | gameport_register_port(gp); | |
120 | ||
121 | return 0; | |
122 | } | |
123 | ||
124 | static void vortex_gameport_unregister(vortex_t * vortex) | |
125 | { | |
126 | if (vortex->gameport) { | |
127 | gameport_unregister_port(vortex->gameport); | |
128 | vortex->gameport = NULL; | |
129 | } | |
130 | } | |
131 | ||
132 | #else | |
133 | static inline int vortex_gameport_register(vortex_t * vortex) { return -ENOSYS; } | |
134 | static inline void vortex_gameport_unregister(vortex_t * vortex) { } | |
135 | #endif |