Merge tag 'locks-v3.16-2' of git://git.samba.org/jlayton/linux
[linux/fpc-iii.git] / sound / pci / au88x0 / au88x0_game.c
blob280f86de223086ab1b26d2639e12334ab2dceb37
1 /*
2 * Manuel Jander.
4 * Based on the work of:
5 * Vojtech Pavlik
6 * Raymond Ingles
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.
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.
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
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
26 * Based 90% on Vojtech Pavlik pcigame driver.
27 * Merged and modified by Manuel Jander, for the OpenVortex
28 * driver. (email: mjander@embedded.cl).
31 #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 #include <linux/export.h>
39 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
41 #define VORTEX_GAME_DWAIT 20 /* 20 ms */
43 static unsigned char vortex_game_read(struct gameport *gameport)
45 vortex_t *vortex = gameport_get_port_data(gameport);
46 return hwread(vortex->mmio, VORTEX_GAME_LEGACY);
49 static void vortex_game_trigger(struct gameport *gameport)
51 vortex_t *vortex = gameport_get_port_data(gameport);
52 hwwrite(vortex->mmio, VORTEX_GAME_LEGACY, 0xff);
55 static int
56 vortex_game_cooked_read(struct gameport *gameport, int *axes, int *buttons)
58 vortex_t *vortex = gameport_get_port_data(gameport);
59 int i;
61 *buttons = (~hwread(vortex->mmio, VORTEX_GAME_LEGACY) >> 4) & 0xf;
63 for (i = 0; i < 4; i++) {
64 axes[i] =
65 hwread(vortex->mmio, VORTEX_GAME_AXIS + (i * AXIS_SIZE));
66 if (axes[i] == AXIS_RANGE)
67 axes[i] = -1;
69 return 0;
72 static int vortex_game_open(struct gameport *gameport, int mode)
74 vortex_t *vortex = gameport_get_port_data(gameport);
76 switch (mode) {
77 case GAMEPORT_MODE_COOKED:
78 hwwrite(vortex->mmio, VORTEX_CTRL2,
79 hwread(vortex->mmio,
80 VORTEX_CTRL2) | CTRL2_GAME_ADCMODE);
81 msleep(VORTEX_GAME_DWAIT);
82 return 0;
83 case GAMEPORT_MODE_RAW:
84 hwwrite(vortex->mmio, VORTEX_CTRL2,
85 hwread(vortex->mmio,
86 VORTEX_CTRL2) & ~CTRL2_GAME_ADCMODE);
87 return 0;
88 default:
89 return -1;
92 return 0;
95 static int vortex_gameport_register(vortex_t *vortex)
97 struct gameport *gp;
99 vortex->gameport = gp = gameport_allocate_port();
100 if (!gp) {
101 printk(KERN_ERR "vortex: cannot allocate memory for gameport\n");
102 return -ENOMEM;
105 gameport_set_name(gp, "AU88x0 Gameport");
106 gameport_set_phys(gp, "pci%s/gameport0", pci_name(vortex->pci_dev));
107 gameport_set_dev_parent(gp, &vortex->pci_dev->dev);
109 gp->read = vortex_game_read;
110 gp->trigger = vortex_game_trigger;
111 gp->cooked_read = vortex_game_cooked_read;
112 gp->open = vortex_game_open;
114 gameport_set_port_data(gp, vortex);
115 gp->fuzz = 64;
117 gameport_register_port(gp);
119 return 0;
122 static void vortex_gameport_unregister(vortex_t * vortex)
124 if (vortex->gameport) {
125 gameport_unregister_port(vortex->gameport);
126 vortex->gameport = NULL;
130 #else
131 static inline int vortex_gameport_register(vortex_t * vortex) { return -ENOSYS; }
132 static inline void vortex_gameport_unregister(vortex_t * vortex) { }
133 #endif