patch-2.4.0-test2 linux/drivers/char/joystick/pcigame.c

• Lines: 199
• Date: Wed Jun 21 08:22:21 2000
• Orig file: v2.4.0-test1/linux/drivers/char/joystick/pcigame.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.0-test1/linux/drivers/char/joystick/pcigame.c linux/drivers/char/joystick/pcigame.c
@@ -0,0 +1,198 @@
+/*
+ * $Id: pcigame.c,v 1.6 2000/05/25 12:05:24 vojtech Exp $
+ *
+ *  Copyright (c) 2000 Vojtech Pavlik
+ *
+ *  Based on the work of:
+ *	Raymond Ingles
+ *
+ *  Sponsored by SuSE
+ */
+
+/*
+ * Trident 4DWave and Aureal Vortex gameport driver for Linux
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Should you need to contact me, the author, you can do so either by
+ * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
+ * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
+ */
+
+#include <asm/io.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/pci_ids.h>
+#include <linux/init.h>
+#include <linux/gameport.h>
+
+#define PCI_VENDOR_ID_AUREAL	0x12eb
+
+#define PCIGAME_DATA_WAIT	20	/* 20 ms */
+
+#define PCIGAME_4DWAVE		0
+#define PCIGAME_VORTEX		1
+#define PCIGAME_VORTEX2		2
+
+struct pcigame_data {
+	int gcr;	/* Gameport control register */
+	int legacy;	/* Legacy port location */
+	int axes;	/* Axes start */
+	int axsize;	/* Axis field size */
+	int axmax;	/* Axis field max value */
+	int adcmode;	/* Value to enable ADC mode in GCR */
+};
+
+static struct pcigame_data pcigame_data[] __devinitdata =
+{{ 0x00030, 0x00031, 0x00034, 2, 0xffff, 0x80 },
+ { 0x1100c, 0x11008, 0x11010, 4, 0x1fff, 0x40 },
+ { 0x2880c, 0x28808, 0x28810, 4, 0x1fff, 0x40 },
+ { 0 }};
+
+struct pcigame {
+	struct gameport gameport;
+	struct pci_dev *dev;
+        unsigned char *base;
+	struct pcigame_data *data;
+};
+
+static unsigned char pcigame_read(struct gameport *gameport)
+{
+	struct pcigame *pcigame = gameport->driver;
+	return readb(pcigame->base + pcigame->data->legacy);
+}
+
+static void pcigame_trigger(struct gameport *gameport)
+{
+	struct pcigame *pcigame = gameport->driver;
+	writeb(0xff, pcigame->base + pcigame->data->legacy);
+}
+
+static int pcigame_cooked_read(struct gameport *gameport, int *axes, int *buttons)
+{
+        struct pcigame *pcigame = gameport->driver;
+	int i;
+
+	*buttons = (~readb(pcigame->base + pcigame->data->legacy) >> 4) & 0xf;
+
+	for (i = 0; i < 4; i++) {
+		axes[i] = readw(pcigame->base + pcigame->data->axes + i * pcigame->data->axsize);
+		if (axes[i] == pcigame->data->axmax) axes[i] = -1;
+	}
+        
+        return 0;
+}
+
+static int pcigame_open(struct gameport *gameport, int mode)
+{
+	struct pcigame *pcigame = gameport->driver;
+
+	switch (mode) {
+		case GAMEPORT_MODE_COOKED:
+			writeb(pcigame->data->adcmode, pcigame->base + pcigame->data->gcr);
+			wait_ms(PCIGAME_DATA_WAIT);
+			return 0;
+		case GAMEPORT_MODE_RAW:
+			writeb(0, pcigame->base + pcigame->data->gcr);
+			return 0;
+		default:
+			return -1;
+	}
+
+	return 0;
+}
+
+static int __devinit pcigame_probe(struct pci_dev *dev, const struct pci_device_id *id)
+{
+	struct pcigame *pcigame;
+	int i;
+
+	if (!(pcigame = kmalloc(sizeof(struct pcigame), GFP_KERNEL)))
+		return -1;
+        memset(pcigame, 0, sizeof(struct pcigame));
+
+
+	pcigame->data = pcigame_data + id->driver_data;
+
+	pcigame->dev = dev;
+	dev->driver_data = pcigame;
+
+	pcigame->gameport.driver = pcigame;
+	pcigame->gameport.type = GAMEPORT_EXT;
+	pcigame->gameport.fuzz = 64;
+	
+	pcigame->gameport.read = pcigame_read;
+	pcigame->gameport.trigger = pcigame_trigger;
+	pcigame->gameport.cooked_read = pcigame_cooked_read;
+	pcigame->gameport.open = pcigame_open;
+
+	for (i = 0; i < 6; i++)
+		if (~pci_resource_flags(dev, i) & IORESOURCE_IO)
+			break;
+
+	pci_enable_device(dev);
+
+	pcigame->base = ioremap(pci_resource_start(pcigame->dev, i),
+				pci_resource_len(pcigame->dev, i));
+
+	gameport_register_port(&pcigame->gameport);
+	
+	printk(KERN_INFO "gameport%d: %s at pci%02x:%02x.%x speed %d kHz\n",
+		pcigame->gameport.number, dev->name, dev->bus->number,
+			PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn), pcigame->gameport.speed);
+
+	return 0;
+}
+
+static void __devexit pcigame_remove(struct pci_dev *dev)
+{
+	struct pcigame *pcigame = dev->driver_data;
+	gameport_unregister_port(&pcigame->gameport);
+	iounmap(pcigame->base);
+	kfree(pcigame);
+}
+
+static struct pci_device_id pcigame_id_table[] __devinitdata =
+{{ PCI_VENDOR_ID_TRIDENT, 0x2000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCIGAME_4DWAVE  },
+ { PCI_VENDOR_ID_TRIDENT, 0x2001, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCIGAME_4DWAVE  },
+ { PCI_VENDOR_ID_AUREAL,  0x0001, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCIGAME_VORTEX  },
+ { PCI_VENDOR_ID_AUREAL,  0x0002, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCIGAME_VORTEX2 },
+ { 0 }};
+
+static struct pci_driver pcigame_driver = {
+	name:		"pcigame",
+	id_table:	pcigame_id_table,
+	probe:		pcigame_probe,
+	remove:		pcigame_remove,
+};
+
+int __init pcigame_init(void)
+{
+	return pci_module_init(&pcigame_driver);
+}
+
+void __exit pcigame_exit(void)
+{
+	pci_unregister_driver(&pcigame_driver);
+}
+
+module_init(pcigame_init);
+module_exit(pcigame_exit);