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 136