1/* 2 * 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 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 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 133