1/* 2 * FM801 gameport driver for Linux 3 * 4 * Copyright (c) by Takashi Iwai <tiwai@suse.de> 5 * 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 * 21 */ 22 23#include <asm/io.h> 24#include <linux/delay.h> 25#include <linux/errno.h> 26#include <linux/ioport.h> 27#include <linux/kernel.h> 28#include <linux/module.h> 29#include <linux/pci.h> 30#include <linux/init.h> 31#include <linux/slab.h> 32#include <linux/gameport.h> 33 34#define PCI_VENDOR_ID_FORTEMEDIA 0x1319 35#define PCI_DEVICE_ID_FM801_GP 0x0802 36 37#define HAVE_COOKED 38 39struct fm801_gp { 40 struct gameport *gameport; 41 struct resource *res_port; 42}; 43 44#ifdef HAVE_COOKED 45static int fm801_gp_cooked_read(struct gameport *gameport, int *axes, int *buttons) 46{ 47 unsigned short w; 48 49 w = inw(gameport->io + 2); 50 *buttons = (~w >> 14) & 0x03; 51 axes[0] = (w == 0xffff) ? -1 : ((w & 0x1fff) << 5); 52 w = inw(gameport->io + 4); 53 axes[1] = (w == 0xffff) ? -1 : ((w & 0x1fff) << 5); 54 w = inw(gameport->io + 6); 55 *buttons |= ((~w >> 14) & 0x03) << 2; 56 axes[2] = (w == 0xffff) ? -1 : ((w & 0x1fff) << 5); 57 w = inw(gameport->io + 8); 58 axes[3] = (w == 0xffff) ? -1 : ((w & 0x1fff) << 5); 59 outw(0xff, gameport->io); /* reset */ 60 61 return 0; 62} 63#endif 64 65static int fm801_gp_open(struct gameport *gameport, int mode) 66{ 67 switch (mode) { 68#ifdef HAVE_COOKED 69 case GAMEPORT_MODE_COOKED: 70 return 0; 71#endif 72 case GAMEPORT_MODE_RAW: 73 return 0; 74 default: 75 return -1; 76 } 77 78 return 0; 79} 80 81static int __devinit fm801_gp_probe(struct pci_dev *pci, const struct pci_device_id *id) 82{ 83 struct fm801_gp *gp; 84 struct gameport *port; 85 int error; 86 87 gp = kzalloc(sizeof(struct fm801_gp), GFP_KERNEL); 88 port = gameport_allocate_port(); 89 if (!gp || !port) { 90 printk(KERN_ERR "fm801-gp: Memory allocation failed\n"); 91 error = -ENOMEM; 92 goto err_out_free; 93 } 94 95 error = pci_enable_device(pci); 96 if (error) 97 goto err_out_free; 98 99 port->open = fm801_gp_open; 100#ifdef HAVE_COOKED 101 port->cooked_read = fm801_gp_cooked_read; 102#endif 103 gameport_set_name(port, "FM801"); 104 gameport_set_phys(port, "pci%s/gameport0", pci_name(pci)); 105 port->dev.parent = &pci->dev; 106 port->io = pci_resource_start(pci, 0); 107 108 gp->gameport = port; 109 gp->res_port = request_region(port->io, 0x10, "FM801 GP"); 110 if (!gp->res_port) { 111 printk(KERN_DEBUG "fm801-gp: unable to grab region 0x%x-0x%x\n", 112 port->io, port->io + 0x0f); 113 error = -EBUSY; 114 goto err_out_disable_dev; 115 } 116 117 pci_set_drvdata(pci, gp); 118 119 outb(0x60, port->io + 0x0d); /* enable joystick 1 and 2 */ 120 gameport_register_port(port); 121 122 return 0; 123 124 err_out_disable_dev: 125 pci_disable_device(pci); 126 err_out_free: 127 gameport_free_port(port); 128 kfree(gp); 129 return error; 130} 131 132static void __devexit fm801_gp_remove(struct pci_dev *pci) 133{ 134 struct fm801_gp *gp = pci_get_drvdata(pci); 135 136 if (gp) { 137 gameport_unregister_port(gp->gameport); 138 release_resource(gp->res_port); 139 kfree(gp); 140 } 141} 142 143static const struct pci_device_id fm801_gp_id_table[] = { 144 { PCI_VENDOR_ID_FORTEMEDIA, PCI_DEVICE_ID_FM801_GP, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, 145 { 0 } 146}; 147 148static struct pci_driver fm801_gp_driver = { 149 .name = "FM801_gameport", 150 .id_table = fm801_gp_id_table, 151 .probe = fm801_gp_probe, 152 .remove = __devexit_p(fm801_gp_remove), 153}; 154 155static int __init fm801_gp_init(void) 156{ 157 return pci_register_driver(&fm801_gp_driver); 158} 159 160static void __exit fm801_gp_exit(void) 161{ 162 pci_unregister_driver(&fm801_gp_driver); 163} 164 165module_init(fm801_gp_init); 166module_exit(fm801_gp_exit); 167 168MODULE_DEVICE_TABLE(pci, fm801_gp_id_table); 169 170MODULE_DESCRIPTION("FM801 gameport driver"); 171MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>"); 172MODULE_LICENSE("GPL"); 173