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 <linux/time.h> 34 #include <linux/delay.h> 35 #include <linux/init.h> 36 #include <sound/core.h> 37 #include "au88x0.h" 38 #include <linux/gameport.h> 39 40 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE)) 41 42 #define VORTEX_GAME_DWAIT 20 /* 20 ms */ 43 44 static unsigned char vortex_game_read(struct gameport *gameport) 45 { 46 vortex_t *vortex = gameport_get_port_data(gameport); 47 return hwread(vortex->mmio, VORTEX_GAME_LEGACY); 48 } 49 50 static void vortex_game_trigger(struct gameport *gameport) 51 { 52 vortex_t *vortex = gameport_get_port_data(gameport); 53 hwwrite(vortex->mmio, VORTEX_GAME_LEGACY, 0xff); 54 } 55 56 static int 57 vortex_game_cooked_read(struct gameport *gameport, int *axes, int *buttons) 58 { 59 vortex_t *vortex = gameport_get_port_data(gameport); 60 int i; 61 62 *buttons = (~hwread(vortex->mmio, VORTEX_GAME_LEGACY) >> 4) & 0xf; 63 64 for (i = 0; i < 4; i++) { 65 axes[i] = 66 hwread(vortex->mmio, VORTEX_GAME_AXIS + (i * AXIS_SIZE)); 67 if (axes[i] == AXIS_RANGE) 68 axes[i] = -1; 69 } 70 return 0; 71 } 72 73 static int vortex_game_open(struct gameport *gameport, int mode) 74 { 75 vortex_t *vortex = gameport_get_port_data(gameport); 76 77 switch (mode) { 78 case GAMEPORT_MODE_COOKED: 79 hwwrite(vortex->mmio, VORTEX_CTRL2, 80 hwread(vortex->mmio, 81 VORTEX_CTRL2) | CTRL2_GAME_ADCMODE); 82 msleep(VORTEX_GAME_DWAIT); 83 return 0; 84 case GAMEPORT_MODE_RAW: 85 hwwrite(vortex->mmio, VORTEX_CTRL2, 86 hwread(vortex->mmio, 87 VORTEX_CTRL2) & ~CTRL2_GAME_ADCMODE); 88 return 0; 89 default: 90 return -1; 91 } 92 93 return 0; 94 } 95 96 static int __devinit vortex_gameport_register(vortex_t * vortex) 97 { 98 struct gameport *gp; 99 100 vortex->gameport = gp = gameport_allocate_port(); 101 if (!gp) { 102 printk(KERN_ERR "vortex: cannot allocate memory for gameport\n"); 103 return -ENOMEM; 104 }; 105 106 gameport_set_name(gp, "AU88x0 Gameport"); 107 gameport_set_phys(gp, "pci%s/gameport0", pci_name(vortex->pci_dev)); 108 gameport_set_dev_parent(gp, &vortex->pci_dev->dev); 109 110 gp->read = vortex_game_read; 111 gp->trigger = vortex_game_trigger; 112 gp->cooked_read = vortex_game_cooked_read; 113 gp->open = vortex_game_open; 114 115 gameport_set_port_data(gp, vortex); 116 gp->fuzz = 64; 117 118 gameport_register_port(gp); 119 120 return 0; 121 } 122 123 static void vortex_gameport_unregister(vortex_t * vortex) 124 { 125 if (vortex->gameport) { 126 gameport_unregister_port(vortex->gameport); 127 vortex->gameport = NULL; 128 } 129 } 130 131 #else 132 static inline int vortex_gameport_register(vortex_t * vortex) { return -ENOSYS; } 133 static inline void vortex_gameport_unregister(vortex_t * vortex) { } 134 #endif 135