patch-2.4.8 linux/drivers/sound/emu10k1/joystick.c

• Lines: 205
• Date: Fri Aug 10 21:02:18 2001
• Orig file: v2.4.7/linux/drivers/sound/emu10k1/joystick.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.7/linux/drivers/sound/emu10k1/joystick.c linux/drivers/sound/emu10k1/joystick.c
@@ -0,0 +1,204 @@
+/*
+ **********************************************************************
+ *     joystick.c - Creative EMU10K1 Joystick port driver
+ *     Copyright 2000 Rui Sousa.
+ *
+ **********************************************************************
+ *
+ *     Date                 Author          Summary of changes
+ *     ----                 ------          ------------------
+ *     April  1, 2000       Rui Sousa       initial version 
+ *     April 28, 2000       Rui Sousa       fixed a kernel oops,
+ *					    make use of kcompat24 for
+ *					    2.2 kernels compatibility.
+ *     May    1, 2000       Rui Sousa       improved kernel compatibility
+ *                                          layer.
+ *
+ **********************************************************************
+ *
+ *     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., 675 Mass Ave, Cambridge, MA 02139,
+ *     USA.
+ *
+ **********************************************************************/
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/version.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <linux/list.h>
+
+#define DRIVER_VERSION "0.3.1"
+
+#ifndef PCI_VENDOR_ID_CREATIVE
+#define PCI_VENDOR_ID_CREATIVE 0x1102
+#endif
+
+#ifndef PCI_DEVICE_ID_CREATIVE_EMU10K1_JOYSTICK
+#define PCI_DEVICE_ID_CREATIVE_EMU10K1_JOYSTICK 0x7002
+#endif
+
+/* PCI function 1 registers, address = <val> + PCIBASE1 */
+
+#define JOYSTICK1               0x00            /* Analog joystick port register                */
+#define JOYSTICK2               0x01            /* Analog joystick port register                */
+#define JOYSTICK3               0x02            /* Analog joystick port register                */
+#define JOYSTICK4               0x03            /* Analog joystick port register                */
+#define JOYSTICK5               0x04            /* Analog joystick port register                */
+#define JOYSTICK6               0x05            /* Analog joystick port register                */
+#define JOYSTICK7               0x06            /* Analog joystick port register                */
+#define JOYSTICK8               0x07            /* Analog joystick port register                */
+
+/* When writing, any write causes JOYSTICK_COMPARATOR output enable to be pulsed on write.      */
+/* When reading, use these bitfields: */
+#define JOYSTICK_BUTTONS        0x0f            /* Joystick button data                         */
+#define JOYSTICK_COMPARATOR     0xf0            /* Joystick comparator data                     */
+
+#define NR_DEV 5
+
+static int io[NR_DEV] = { 0, };
+
+enum {
+	EMU10K1_JOYSTICK = 0
+};
+
+static char *card_names[] = {
+	"EMU10K1 Joystick Port"
+};
+
+static struct pci_device_id emu10k1_joy_pci_tbl[] __devinitdata = {
+	{PCI_VENDOR_ID_CREATIVE, PCI_DEVICE_ID_CREATIVE_EMU10K1_JOYSTICK,
+	 PCI_ANY_ID, PCI_ANY_ID, 0, 0, EMU10K1_JOYSTICK},
+	{0,}
+};
+
+MODULE_DEVICE_TABLE(pci, emu10k1_joy_pci_tbl);
+
+struct emu10k1_joy_card {
+	struct list_head list;
+
+	struct pci_dev *pci_dev;
+	unsigned long iobase;
+	unsigned long length;
+	u8 addr_changed;
+};
+
+static LIST_HEAD(emu10k1_joy_devs);
+static unsigned int devindex = 0;
+
+/* Driver initialization routine */
+static int __devinit emu10k1_joy_probe(struct pci_dev *pci_dev, const struct pci_device_id *pci_id)
+{
+	struct emu10k1_joy_card *card;
+	u16 model;
+	u8 chiprev;
+
+	if ((card = kmalloc(sizeof(struct emu10k1_joy_card), GFP_KERNEL)) == NULL) {
+		printk(KERN_ERR "emu10k1-joy: out of memory\n");
+		return -ENOMEM;
+	}
+	memset(card, 0, sizeof(struct emu10k1_joy_card));
+
+	if (pci_enable_device(pci_dev)) {
+		printk(KERN_ERR "emu10k1-joy: couldn't enable device\n");
+		kfree(card);
+		return -ENODEV;
+	}
+
+	card->iobase = pci_resource_start(pci_dev, 0); 
+	card->length = pci_resource_len(pci_dev, 0);
+
+	if (request_region(card->iobase, card->length, card_names[pci_id->driver_data])
+	    == NULL) {
+		printk(KERN_ERR "emu10k1-joy: IO space in use\n");
+		kfree(card);
+		return -ENODEV;
+	}
+
+	pci_set_drvdata(pci_dev, card);
+
+	card->pci_dev = pci_dev;
+	card->addr_changed = 0;
+
+	pci_read_config_byte(pci_dev, PCI_REVISION_ID, &chiprev);
+	pci_read_config_word(pci_dev, PCI_SUBSYSTEM_ID, &model);
+
+	printk(KERN_INFO "emu10k1-joy: %s rev %d model 0x%x found, IO at 0x%04lx-0x%04lx\n",
+		card_names[pci_id->driver_data], chiprev, model, card->iobase,
+		card->iobase + card->length - 1);
+
+	if (io[devindex]) {
+		if ((io[devindex] & ~0x18) != 0x200) {
+			printk(KERN_ERR "emu10k1-joy: invalid io value\n");
+			release_region(card->iobase, card->length);
+			kfree(card);
+			return -ENODEV;
+		}
+
+		card->addr_changed = 1;
+		pci_write_config_dword(pci_dev, PCI_BASE_ADDRESS_0, io[devindex]);
+		printk(KERN_INFO "emu10k1-joy: IO ports mirrored at 0x%03x\n", io[devindex]);
+	}
+
+	list_add(&card->list, &emu10k1_joy_devs);
+	devindex++;
+
+	return 0;
+}
+
+static void __devexit emu10k1_joy_remove(struct pci_dev *pci_dev)
+{
+	struct emu10k1_joy_card *card = pci_get_drvdata(pci_dev);
+
+	if(card->addr_changed)
+		pci_write_config_dword(pci_dev, PCI_BASE_ADDRESS_0, card->iobase);
+
+	release_region(card->iobase, card->length);
+
+	list_del(&card->list);
+	kfree(card);
+	pci_set_drvdata(pci_dev, NULL);
+}
+
+MODULE_PARM(io, "1-" __MODULE_STRING(NR_DEV) "i");
+MODULE_PARM_DESC(io, "sets joystick port address");
+MODULE_AUTHOR("Rui Sousa (Email to: emu10k1-devel@opensource.creative.com)");
+MODULE_DESCRIPTION("Creative EMU10K1 PCI Joystick Port v" DRIVER_VERSION
+		   "\nCopyright (C) 2000 Rui Sousa");
+
+static struct pci_driver emu10k1_joy_pci_driver = {
+	name:"emu10k1 joystick",
+	id_table:emu10k1_joy_pci_tbl,
+	probe:emu10k1_joy_probe,
+	remove:emu10k1_joy_remove,
+};
+
+static int __init emu10k1_joy_init_module(void)
+{
+	printk(KERN_INFO "Creative EMU10K1 PCI Joystick Port, version " DRIVER_VERSION ", " __TIME__
+	       " " __DATE__ "\n");
+
+	return pci_module_init(&emu10k1_joy_pci_driver);
+}
+
+static void __exit emu10k1_joy_cleanup_module(void)
+{
+	pci_unregister_driver(&emu10k1_joy_pci_driver);
+	return;
+}
+
+module_init(emu10k1_joy_init_module);
+module_exit(emu10k1_joy_cleanup_module);