patch-2.3.31 linux/drivers/char/joystick/joy-pci.c

• Lines: 274
• Date: Tue Dec 7 10:13:11 1999
• Orig file: v2.3.30/linux/drivers/char/joystick/joy-pci.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.30/linux/drivers/char/joystick/joy-pci.c linux/drivers/char/joystick/joy-pci.c
@@ -0,0 +1,273 @@
+/*
+ *  joy-pci.c  Version 0.4.0
+ *
+ *  Copyright (c) 1999 Raymond Ingles
+ *  Copyright (c) 1999 Vojtech Pavlik
+ *
+ *  Sponsored by SuSE
+ */
+
+/*
+ * This is a module for the Linux joystick driver, supporting the
+ * gameports on Trident 4DWave and Aureal Vortex soundcards, and
+ * analog joysticks connected to them.
+ */
+
+/*
+ * 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@ucw.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/joystick.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/pci.h>
+#include <linux/pci_ids.h>
+#include <linux/init.h>
+
+MODULE_AUTHOR("Raymond Ingles <sorceror@tir.com>");
+MODULE_PARM(js_pci, "3-32i");
+
+#define NUM_CARDS              8
+static int js_pci[NUM_CARDS * 4] __initdata = { -1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,
+						-1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0 };
+
+static struct js_port * js_pci_port __initdata = NULL;
+
+#include "joy-analog.h"
+
+struct js_pci_info;
+typedef void (*js_pci_func)(struct js_pci_info *);
+
+struct js_pci_data {
+	int vendor;	/* PCI Vendor ID */
+	int model;	/* PCI Model ID */
+	int size;	/* Memory / IO region size */
+	int lcr;	/* Aureal Legacy Control Register */
+	int gcr;	/* Gameport control register */
+	int buttons;	/* Buttons location */
+	int axes;	/* Axes start */
+	int axsize;	/* Axis field size */
+	int axmax;	/* Axis field max value */
+	js_pci_func init;	
+	js_pci_func cleanup;	
+	char *name;
+};
+
+struct js_pci_info {
+        unsigned char *base;
+	struct pci_dev *pci_p;
+	__u32 lcr;
+	struct js_pci_data *data;
+        struct js_an_info an;
+};
+
+/*
+ * js_pci_*_init() sets the info->base field, disables legacy gameports,
+ * and enables the enhanced ones.
+ */
+
+static void js_pci_4dwave_init(struct js_pci_info *info)
+{
+	info->base = ioremap(BASE_ADDRESS(info->pci_p, 1), info->data->size);
+	pci_read_config_word(info->pci_p, info->data->lcr, (unsigned short *)&info->lcr);
+	pci_write_config_word(info->pci_p, info->data->lcr, info->lcr & ~0x20);
+	writeb(0x80, info->base + info->data->gcr);
+}
+
+static void js_pci_vortex_init(struct js_pci_info *info)
+{
+	info->base = ioremap(BASE_ADDRESS(info->pci_p, 0), info->data->size);
+	info->lcr = readl(info->base + info->data->lcr);
+	writel(info->lcr & ~0x8, info->base + info->data->lcr);
+	writel(0x40, info->base + info->data->gcr);
+}
+
+/*
+ * js_pci_*_cleanup does the opposite of the above functions.
+ */
+
+static void js_pci_4dwave_cleanup(struct js_pci_info *info)
+{
+	pci_write_config_word(info->pci_p, info->data->lcr, info->lcr);
+	writeb(0x00, info->base + info->data->gcr);
+	iounmap(info->base);
+}
+
+static void js_pci_vortex_cleanup(struct js_pci_info *info)
+{
+	writel(info->lcr, info->base + info->data->lcr);
+	writel(0x00, info->base + info->data->gcr);
+	iounmap(info->base);
+}
+
+static struct js_pci_data js_pci_data[] =
+{{ PCI_VENDOR_ID_TRIDENT, 0x2000, 0x10000, 0x00044 ,0x00030, 0x00031, 0x00034, 2, 0xffff,
+	js_pci_4dwave_init, js_pci_4dwave_cleanup, "Trident 4DWave DX" },
+ { PCI_VENDOR_ID_TRIDENT, 0x2001, 0x10000, 0x00044, 0x00030, 0x00031, 0x00034, 2, 0xffff,
+	js_pci_4dwave_init, js_pci_4dwave_cleanup, "Trident 4DWave NX" },
+ { PCI_VENDOR_ID_AUREAL,  0x0001, 0x40000, 0x1280c, 0x1100c, 0x11008, 0x11010, 4, 0x1fff,
+	js_pci_vortex_init, js_pci_vortex_cleanup, "Aureal Vortex1" },
+ { PCI_VENDOR_ID_AUREAL,  0x0002, 0x40000, 0x2a00c, 0x2880c, 0x28808, 0x28810, 4, 0x1fff,
+	js_pci_vortex_init, js_pci_vortex_cleanup, "Aureal Vortex2" },
+ { 0, 0, 0, 0, 0, 0, 0, 0, 0, NULL, NULL }};
+
+/*
+ * js_pci_read() reads data from a PCI gameport.
+ */
+
+static int js_pci_read(void *xinfo, int **axes, int **buttons)
+{
+        struct js_pci_info *info = xinfo;
+	int i;
+
+	info->an.buttons = ~readb(info->base + info->data->buttons) >> 4;
+
+	for (i = 0; i < 4; i++)
+		info->an.axes[i] = readw(info->base + info->data->axes + i * info->data->axsize);
+
+        js_an_decode(&info->an, axes, buttons);
+        
+        return 0;
+}
+	
+/*
+ * js_pci_open() is a callback from the file open routine.
+ */
+
+static int js_pci_open(struct js_dev *jd)
+{
+        MOD_INC_USE_COUNT;
+        return 0;
+}
+
+/*
+ * js_pci_close() is a callback from the file release routine.
+ */
+
+static int js_pci_close(struct js_dev *jd)
+{
+        MOD_DEC_USE_COUNT;
+        return 0;
+}
+
+static struct js_port * __init js_pci_probe(struct js_port *port, int type, int number,
+					struct pci_dev *pci_p, struct js_pci_data *data)
+{
+	int i;
+	unsigned char u;
+	int mask0, mask1, numdev;
+        struct js_pci_info iniinfo;
+        struct js_pci_info *info = &iniinfo;
+
+	mask0 = mask1 = 0;
+	
+	for (i = 0; i < NUM_CARDS; i++)
+		if (js_pci[i * 4] == type && js_pci[i * 4 + 1] == number) {
+			mask0 = js_pci[i * 4 + 2];
+			mask1 = js_pci[i * 4 + 3];
+			if (!mask0 && !mask1) return port;
+			break;
+		}
+
+	memset(info, 0,  sizeof(struct js_pci_info));
+
+	info->data = data;
+	info->pci_p = pci_p;
+	data->init(info);
+
+	mdelay(10);
+	js_pci_read(info, NULL, NULL);
+
+	for (i = u = 0; i < 4; i++)
+		if (info->an.axes[i] < info->data->axmax) u |= 1 << i;
+
+	if ((numdev = js_an_probe_devs(&info->an, u, mask0, mask1, port)) <= 0)
+		return port;
+
+	port = js_register_port(port, info, numdev, sizeof(struct js_pci_info), js_pci_read);
+
+	info = port->info;
+
+	for (i = 0; i < numdev; i++)
+		printk(KERN_WARNING "js%d: %s on %s #%d\n",
+			js_register_device(port, i, js_an_axes(i, &info->an), js_an_buttons(i, &info->an),
+			js_an_name(i, &info->an), js_pci_open, js_pci_close), js_an_name(i, &info->an), data->name, number);
+
+	js_pci_read(info, port->axes, port->buttons);
+	js_an_init_corr(&info->an, port->axes, port->corr, 32);
+
+	return port;
+}
+
+#ifndef MODULE
+int __init js_pci_setup(SETUP_PARAM)
+{
+        int i;
+	SETUP_PARSE(NUM_CARDS*4);
+        for (i = 0; i <= ints[0] && i < NUM_CARDS*4; i++)
+		js_pci[i] = ints[i+1];
+	return 1;
+}
+__setup("js_pci=", js_pci_setup);
+#endif
+
+#ifdef MODULE
+int init_module(void)
+#else
+int __init js_pci_init(void)
+#endif
+{
+        struct pci_dev *pci_p = NULL;
+        int i, j;
+
+	for (i = 0; js_pci_data[i].vendor; i++)
+		for (j = 0; (pci_p = pci_find_device(js_pci_data[i].vendor, js_pci_data[i].model, pci_p)); j++)
+			js_pci_port = js_pci_probe(js_pci_port, i, j, pci_p, js_pci_data + i);
+
+        if (!js_pci_port) {
+#ifdef MODULE
+                printk(KERN_WARNING "joy-pci: no joysticks found\n");
+#endif
+                return -ENODEV;
+        }
+
+        return 0;
+}
+
+#ifdef MODULE
+void cleanup_module(void)
+{
+        int i;
+        struct js_pci_info *info;
+
+        while (js_pci_port) {
+                for (i = 0; i < js_pci_port->ndevs; i++)
+                        if (js_pci_port->devs[i])
+                                js_unregister_device(js_pci_port->devs[i]);
+                info = js_pci_port->info;
+		info->data->cleanup(info);
+                js_pci_port = js_unregister_port(js_pci_port);
+        }
+}
+#endif