drivers/input/gameport/vortex.c

   1 /*
   2  * $Id: vortex.c,v 1.5 2002/07/01 15:39:30 vojtech Exp $
   3  *
   4  *  Copyright (c) 2000-2001 Vojtech Pavlik
   5  *
   6  *  Based on the work of:
   7  *      Raymond Ingles
   8  */
   9
  10 /*
  11  * Trident 4DWave and Aureal Vortex gameport driver for Linux
  12  */
  13
  14 /*
  15  * This program is free software; you can redistribute it and/or modify
  16  * it under the terms of the GNU General Public License as published by
  17  * the Free Software Foundation; either version 2 of the License, or
  18  * (at your option) any later version.
  19  *
  20  * This program is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  * GNU General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU General Public License
  26  * along with this program; if not, write to the Free Software
  27  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  28  *
  29  * Should you need to contact me, the author, you can do so either by
  30  * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
  31  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  32  */
  33
  34 #include <asm/io.h>
  35 #include <linux/delay.h>
  36 #include <linux/errno.h>
  37 #include <linux/ioport.h>
  38 #include <linux/kernel.h>
  39 #include <linux/module.h>
  40 #include <linux/pci.h>
  41 #include <linux/init.h>
  42 #include <linux/slab.h>
  43 #include <linux/delay.h>
  44 #include <linux/gameport.h>
  45
  46 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
  47 MODULE_DESCRIPTION("Aureal Vortex and Vortex2 gameport driver");
  48 MODULE_LICENSE("GPL");
  49
  50 #define VORTEX_GCR              0x0c    /* Gameport control register */
  51 #define VORTEX_LEG              0x08    /* Legacy port location */
  52 #define VORTEX_AXD              0x10    /* Axes start */
  53 #define VORTEX_DATA_WAIT        20      /* 20 ms */
  54
  55 struct vortex {
  56         struct gameport *gameport;
  57         struct pci_dev *dev;
  58         unsigned char __iomem *base;
  59         unsigned char __iomem *io;
  60 };
  61
  62 static unsigned char vortex_read(struct gameport *gameport)
  63 {
  64         struct vortex *vortex = gameport->port_data;
  65         return readb(vortex->io + VORTEX_LEG);
  66 }
  67
  68 static void vortex_trigger(struct gameport *gameport)
  69 {
  70         struct vortex *vortex = gameport->port_data;
  71         writeb(0xff, vortex->io + VORTEX_LEG);
  72 }
  73
  74 static int vortex_cooked_read(struct gameport *gameport, int *axes, int *buttons)
  75 {
  76         struct vortex *vortex = gameport->port_data;
  77         int i;
  78
  79         *buttons = (~readb(vortex->base + VORTEX_LEG) >> 4) & 0xf;
  80
  81         for (i = 0; i < 4; i++) {
  82                 axes[i] = readw(vortex->io + VORTEX_AXD + i * sizeof(u32));
  83                 if (axes[i] == 0x1fff) axes[i] = -1;
  84         }
  85
  86         return 0;
  87 }
  88
  89 static int vortex_open(struct gameport *gameport, int mode)
  90 {
  91         struct vortex *vortex = gameport->port_data;
  92
  93         switch (mode) {
  94                 case GAMEPORT_MODE_COOKED:
  95                         writeb(0x40, vortex->io + VORTEX_GCR);
  96                         msleep(VORTEX_DATA_WAIT);
  97                         return 0;
  98                 case GAMEPORT_MODE_RAW:
  99                         writeb(0x00, vortex->io + VORTEX_GCR);
 100                         return 0;
 101                 default:
 102                         return -1;
 103         }
 104
 105         return 0;
 106 }
 107
 108 static int __devinit vortex_probe(struct pci_dev *dev, const struct pci_device_id *id)
 109 {
 110         struct vortex *vortex;
 111         struct gameport *port;
 112         int i;
 113
 114         vortex = kcalloc(1, sizeof(struct vortex), GFP_KERNEL);
 115         port = gameport_allocate_port();
 116         if (!vortex || !port) {
 117                 printk(KERN_ERR "vortex: Memory allocation failed.\n");
 118                 kfree(vortex);
 119                 gameport_free_port(port);
 120                 return -ENOMEM;
 121         }
 122
 123         for (i = 0; i < 6; i++)
 124                 if (~pci_resource_flags(dev, i) & IORESOURCE_IO)
 125                         break;
 126
 127         pci_enable_device(dev);
 128
 129         vortex->dev = dev;
 130         vortex->gameport = port;
 131         vortex->base = ioremap(pci_resource_start(vortex->dev, i),
 132                                 pci_resource_len(vortex->dev, i));
 133         vortex->io = vortex->base + id->driver_data;
 134
 135         pci_set_drvdata(dev, vortex);
 136
 137         port->port_data = vortex;
 138         port->fuzz = 64;
 139
 140         gameport_set_name(port, "AU88x0");
 141         gameport_set_phys(port, "pci%s/gameport0", pci_name(dev));
 142         port->dev.parent = &dev->dev;
 143         port->read = vortex_read;
 144         port->trigger = vortex_trigger;
 145         port->cooked_read = vortex_cooked_read;
 146         port->open = vortex_open;
 147
 148         gameport_register_port(port);
 149
 150         return 0;
 151 }
 152
 153 static void __devexit vortex_remove(struct pci_dev *dev)
 154 {
 155         struct vortex *vortex = pci_get_drvdata(dev);
 156
 157         gameport_unregister_port(vortex->gameport);
 158         iounmap(vortex->base);
 159         kfree(vortex);
 160 }
 161
 162 static struct pci_device_id vortex_id_table[] = {
 163         { 0x12eb, 0x0001, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0x11000 },
 164         { 0x12eb, 0x0002, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0x28800 },
 165         { 0 }
 166 };
 167
 168 static struct pci_driver vortex_driver = {
 169         .name =         "vortex_gameport",
 170         .id_table =     vortex_id_table,
 171         .probe =        vortex_probe,
 172         .remove =       __devexit_p(vortex_remove),
 173 };
 174
 175 static int __init vortex_init(void)
 176 {
 177         return pci_register_driver(&vortex_driver);
 178 }
 179
 180 static void __exit vortex_exit(void)
 181 {
 182         pci_unregister_driver(&vortex_driver);
 183 }
 184
 185 module_init(vortex_init);
 186 module_exit(vortex_exit);