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

• Lines: 259
• Date: Wed Jun 21 08:22:21 2000
• Orig file: v2.4.0-test1/linux/drivers/char/joystick/turbografx.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.0-test1/linux/drivers/char/joystick/turbografx.c linux/drivers/char/joystick/turbografx.c
@@ -0,0 +1,258 @@
+/*
+ * $Id: turbografx.c,v 1.8 2000/05/29 20:39:38 vojtech Exp $
+ *
+ *  Copyright (c) 1998-2000 Vojtech Pavlik
+ *
+ *  Based on the work of:
+ *	Steffen Schwenke
+ *
+ *  Sponsored by SuSE
+ */
+
+/*
+ * TurboGraFX parallel port interface 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 <linux/kernel.h>
+#include <linux/parport.h>
+#include <linux/input.h>
+#include <linux/module.h>
+#include <linux/init.h>
+
+MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
+MODULE_PARM(tgfx, "2-8i");
+MODULE_PARM(tgfx_2, "2-8i");
+MODULE_PARM(tgfx_3, "2-8i");
+
+#define TGFX_REFRESH_TIME	HZ/100	/* 10 ms */
+
+#define TGFX_TRIGGER		0x08
+#define TGFX_UP			0x10
+#define TGFX_DOWN		0x20	
+#define TGFX_LEFT		0x40
+#define TGFX_RIGHT		0x80
+
+#define TGFX_THUMB		0x02
+#define TGFX_THUMB2		0x04
+#define TGFX_TOP		0x01
+#define TGFX_TOP2		0x08
+
+static int tgfx[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 };
+static int tgfx_2[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 };
+static int tgfx_3[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 };
+
+static int tgfx_buttons[] = { BTN_TRIGGER, BTN_THUMB, BTN_THUMB2, BTN_TOP, BTN_TOP2 };
+static char *tgfx_name = "TurboGraFX Multisystem joystick";
+
+struct tgfx {
+	struct pardevice *pd;
+	struct timer_list timer;
+	struct input_dev dev[7];
+	int sticks;
+	int used;
+} *tgfx_base[3];
+
+/*
+ * tgfx_timer() reads and analyzes TurboGraFX joystick data.
+ */
+
+static void tgfx_timer(unsigned long private)
+{
+	struct tgfx *tgfx = (void *) private;
+	struct input_dev *dev;
+	int data1, data2, i;
+
+	for (i = 0; i < 7; i++)
+		if (tgfx->sticks & (1 << i)) {
+
+ 			dev = tgfx->dev + i;
+
+			parport_write_data(tgfx->pd->port, ~(1 << i));
+			data1 = parport_read_status(tgfx->pd->port) ^ 0x7f;
+			data2 = parport_read_control(tgfx->pd->port) ^ 0x04;	/* CAVEAT parport */
+
+			input_report_abs(dev, ABS_X, !!(data1 & TGFX_RIGHT) - !!(data1 & TGFX_LEFT));
+			input_report_abs(dev, ABS_Y, !!(data1 & TGFX_DOWN ) - !!(data1 & TGFX_UP  ));
+
+			input_report_key(dev, BTN_TRIGGER, (data1 & TGFX_TRIGGER));
+			input_report_key(dev, BTN_THUMB,   (data2 & TGFX_THUMB  ));
+			input_report_key(dev, BTN_THUMB2,  (data2 & TGFX_THUMB2 ));
+			input_report_key(dev, BTN_TOP,     (data2 & TGFX_TOP    ));
+			input_report_key(dev, BTN_TOP2,    (data2 & TGFX_TOP2   ));
+		}
+
+	mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME);
+}
+
+static int tgfx_open(struct input_dev *dev)
+{
+        struct tgfx *tgfx = dev->private;
+        if (!tgfx->used++) {
+		parport_claim(tgfx->pd);
+		parport_write_control(tgfx->pd->port, 0x04);
+                mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME); 
+	}
+        return 0;
+}
+
+static void tgfx_close(struct input_dev *dev)
+{
+        struct tgfx *tgfx = dev->private;
+        if (!--tgfx->used) {
+                del_timer(&tgfx->timer);
+		parport_write_control(tgfx->pd->port, 0x00);
+        	parport_release(tgfx->pd);
+	}
+}
+
+/*
+ * tgfx_probe() probes for tg gamepads.
+ */
+
+static struct tgfx __init *tgfx_probe(int *config)
+{
+	struct tgfx *tgfx;
+	struct parport *pp;
+	int i, j;
+
+	if (config[0] < 0)
+		return NULL;
+
+	for (pp = parport_enumerate(); pp && (config[0] > 0); pp = pp->next)
+		config[0]--;
+
+	if (!pp) {
+		printk(KERN_ERR "turbografx.c: no such parport\n");
+		return NULL;
+	}
+
+	if (!(tgfx = kmalloc(sizeof(struct tgfx), GFP_KERNEL)))
+		return NULL;
+	memset(tgfx, 0, sizeof(struct tgfx));
+
+	tgfx->pd = parport_register_device(pp, "turbografx", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
+
+	if (!tgfx->pd) {
+		printk(KERN_ERR "turbografx.c: parport busy already - lp.o loaded?\n");
+		kfree(tgfx);
+		return NULL;
+	}
+
+	init_timer(&tgfx->timer);
+	tgfx->timer.data = (long) tgfx;
+	tgfx->timer.function = tgfx_timer;
+
+	tgfx->sticks = 0;
+
+	for (i = 0; i < 7; i++)
+		if (config[i+1] > 0 && config[i+1] < 6) {
+
+			tgfx->sticks |= (1 << i);
+
+			tgfx->dev[i].private = tgfx;
+			tgfx->dev[i].open = tgfx_open;
+			tgfx->dev[i].close = tgfx_close;
+
+			tgfx->dev[i].name = tgfx_name;
+			tgfx->dev[i].idbus = BUS_PARPORT;
+			tgfx->dev[i].idvendor = 0x0003;
+			tgfx->dev[i].idproduct = config[i+1];
+			tgfx->dev[i].idversion = 0x0100;
+
+			tgfx->dev[i].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+			tgfx->dev[i].absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
+
+			for (j = 0; j < config[i+1]; j++)
+				set_bit(tgfx_buttons[j], tgfx->dev[i].keybit); 
+
+			tgfx->dev[i].absmin[ABS_X] = -1; tgfx->dev[i].absmax[ABS_X] = 1;
+			tgfx->dev[i].absmin[ABS_Y] = -1; tgfx->dev[i].absmax[ABS_Y] = 1;
+
+			input_register_device(tgfx->dev + i);
+			printk(KERN_INFO "input%d: %d-button Multisystem joystick on %s\n",
+				tgfx->dev[i].number, config[i+1], tgfx->pd->port->name);
+		}
+
+        if (!tgfx->sticks) {
+		parport_unregister_device(tgfx->pd);
+		kfree(tgfx);
+		return NULL;
+        }
+		
+	return tgfx;
+}
+
+#ifndef MODULE
+int __init tgfx_setup(char *str)
+{
+	int i, ints[9];
+	get_options(str, ARRAY_SIZE(ints), ints);
+	for (i = 0; i <= ints[0] && i < 8; i++) tgfx[i] = ints[i + 1];
+	return 1;
+}
+int __init tgfx_setup_2(char *str)
+{
+	int i, ints[9];
+	get_options(str, ARRAY_SIZE(ints), ints);
+	for (i = 0; i <= ints[0] && i < 8; i++) tgfx_2[i] = ints[i + 1];
+	return 1;
+}
+int __init tgfx_setup_3(char *str)
+{
+	int i, ints[9];
+	get_options(str, ARRAY_SIZE(ints), ints);
+	for (i = 0; i <= ints[0] && i < 8; i++) tgfx_3[i] = ints[i + 1];
+	return 1;
+}
+__setup("tgfx=", tgfx_setup);
+__setup("tgfx_2=", tgfx_setup_2);
+__setup("tgfx_3=", tgfx_setup_3);
+#endif
+
+int __init tgfx_init(void)
+{
+	tgfx_base[0] = tgfx_probe(tgfx);
+	tgfx_base[1] = tgfx_probe(tgfx_2);
+	tgfx_base[2] = tgfx_probe(tgfx_3);
+
+	if (tgfx_base[0] || tgfx_base[1] || tgfx_base[2])
+		return 0;
+
+	return -ENODEV;
+}
+
+void __exit tgfx_exit(void)
+{
+	int i, j;
+
+	for (i = 0; i < 3; i++) 
+		if (tgfx_base[i]) {
+			for (j = 0; j < 7; j++)
+				if (tgfx_base[i]->sticks & (1 << j))
+					input_unregister_device(tgfx_base[i]->dev + j);
+		parport_unregister_device(tgfx_base[i]->pd);
+	}
+}
+
+module_init(tgfx_init);
+module_exit(tgfx_exit);