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

• Lines: 226
• Date: Wed Jun 21 08:22:21 2000
• Orig file: v2.4.0-test1/linux/drivers/char/joystick/spaceorb.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.0-test1/linux/drivers/char/joystick/spaceorb.c linux/drivers/char/joystick/spaceorb.c
@@ -0,0 +1,225 @@
+/*
+ * $Id: spaceorb.c,v 1.7 2000/05/29 11:19:51 vojtech Exp $
+ *
+ *  Copyright (c) 1999-2000 Vojtech Pavlik
+ * 
+ *  Based on the work of:
+ *  	David Thompson
+ *
+ *  Sponsored by SuSE
+ */
+
+/*
+ * SpaceTec SpaceOrb 360 and Avenger 6dof controller 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/malloc.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/serio.h>
+
+/*
+ * Constants.
+ */
+
+#define SPACEORB_MAX_LENGTH	64
+
+static int spaceorb_buttons[] = { BTN_TL, BTN_TR, BTN_Y, BTN_X, BTN_B, BTN_A, BTN_MODE};
+static int spaceorb_axes[] = { ABS_X, ABS_Y, ABS_Z, ABS_RX, ABS_RY, ABS_RZ};
+static char *spaceorb_name = "SpaceTec SpaceOrb 360";
+
+/*
+ * Per-Orb data.
+ */
+
+struct spaceorb {
+	struct input_dev dev;
+	struct serio *serio;
+	int idx;
+	unsigned char data[SPACEORB_MAX_LENGTH];
+};
+
+static unsigned char spaceorb_xor[] = "SpaceWare";
+
+static unsigned char *spaceorb_errors[] = { "EEPROM storing 0 failed", "Receive queue overflow", "Transmit queue timeout",
+		"Bad packet", "Power brown-out", "EEPROM checksum error", "Hardware fault" }; 
+
+/*
+ * spaceorb_process_packet() decodes packets the driver receives from the
+ * SpaceOrb.
+ */
+
+static void spaceorb_process_packet(struct spaceorb *spaceorb)
+{
+	struct input_dev *dev = &spaceorb->dev;
+	unsigned char *data = spaceorb->data;
+	unsigned char c = 0;
+	int axes[6];
+	int i;
+
+	if (spaceorb->idx < 2) return;
+	for (i = 0; i < spaceorb->idx; i++) c ^= data[i];
+	if (c) return;
+
+	switch (data[0]) {
+
+		case 'R':				/* Reset packet */
+			spaceorb->data[spaceorb->idx - 1] = 0;
+			for (i = 1; i < spaceorb->idx && spaceorb->data[i] == ' '; i++);
+			printk(KERN_INFO "input%d: %s [%s] on serio%d\n",
+				 spaceorb->dev.number, spaceorb_name, spaceorb->data + i, spaceorb->serio->number);
+			break;
+
+		case 'D':				/* Ball + button data */
+			if (spaceorb->idx != 12) return;
+			for (i = 0; i < 9; i++) spaceorb->data[i+2] ^= spaceorb_xor[i]; 
+			axes[0] = ( data[2]	 << 3) | (data[ 3] >> 4);
+			axes[1] = ((data[3] & 0x0f) << 6) | (data[ 4] >> 1);
+			axes[2] = ((data[4] & 0x01) << 9) | (data[ 5] << 2) | (data[4] >> 5);
+			axes[3] = ((data[6] & 0x1f) << 5) | (data[ 7] >> 2);
+			axes[4] = ((data[7] & 0x03) << 8) | (data[ 8] << 1) | (data[7] >> 6);
+			axes[5] = ((data[9] & 0x3f) << 4) | (data[10] >> 3);
+			for (i = 0; i < 6; i++)
+				input_report_abs(dev, spaceorb_axes[i], axes[i] - ((axes[i] & 0x200) ? 1024 : 0));
+			for (i = 0; i < 8; i++)
+				input_report_key(dev, spaceorb_buttons[i], (data[1] >> i) & 1);
+			break;
+
+		case 'K':				/* Button data */
+			if (spaceorb->idx != 5) return;
+			for (i = 0; i < 7; i++)
+				input_report_key(dev, spaceorb_buttons[i], (data[2] >> i) & 1);
+
+			break;
+
+		case 'E':				/* Error packet */
+			if (spaceorb->idx != 4) return;
+			printk(KERN_ERR "joy-spaceorb: Device error. [ ");
+			for (i = 0; i < 7; i++) if (data[1] & (1 << i)) printk("%s ", spaceorb_errors[i]);
+			printk("]\n");
+			break;
+	}
+}
+
+static void spaceorb_interrupt(struct serio *serio, unsigned char data, unsigned int flags)
+{
+	struct spaceorb* spaceorb = serio->private;
+
+	if (~data & 0x80) {
+		if (spaceorb->idx) spaceorb_process_packet(spaceorb);
+		spaceorb->idx = 0;
+	}
+	if (spaceorb->idx < SPACEORB_MAX_LENGTH)
+		spaceorb->data[spaceorb->idx++] = data & 0x7f;
+}
+
+/*
+ * spaceorb_disconnect() is the opposite of spaceorb_connect()
+ */
+
+static void spaceorb_disconnect(struct serio *serio)
+{
+	struct spaceorb* spaceorb = serio->private;
+	input_unregister_device(&spaceorb->dev);
+	serio_close(serio);
+	kfree(spaceorb);
+}
+
+/*
+ * spaceorb_connect() is the routine that is called when someone adds a
+ * new serio device. It looks for the SpaceOrb/Avenger, and if found, registers
+ * it as an input device.
+ */
+
+static void spaceorb_connect(struct serio *serio, struct serio_dev *dev)
+{
+	struct spaceorb *spaceorb;
+	int i, t;
+
+	if (serio->type != (SERIO_RS232 | SERIO_SPACEORB))
+		return;
+
+	if (!(spaceorb = kmalloc(sizeof(struct spaceorb), GFP_KERNEL)))
+		return;
+	memset(spaceorb, 0, sizeof(struct spaceorb));
+
+	spaceorb->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);	
+
+	for (i = 0; i < 7; i++)
+		set_bit(spaceorb_buttons[i], &spaceorb->dev.keybit);
+
+	for (i = 0; i < 6; i++) {
+		t = spaceorb_axes[i];
+		set_bit(t, spaceorb->dev.absbit);
+		spaceorb->dev.absmin[t] = -508;
+		spaceorb->dev.absmax[t] =  508;
+	}
+
+	spaceorb->serio = serio;
+	spaceorb->dev.private = spaceorb;
+
+	spaceorb->dev.name = spaceorb_name;
+	spaceorb->dev.idbus = BUS_RS232;
+	spaceorb->dev.idvendor = SERIO_SPACEORB;
+	spaceorb->dev.idproduct = 0x0001;
+	spaceorb->dev.idversion = 0x0100;
+	
+	serio->private = spaceorb;
+
+	if (serio_open(serio, dev)) {
+		kfree(spaceorb);
+		return;
+	}
+
+	input_register_device(&spaceorb->dev);
+}
+
+/*
+ * The serio device structure.
+ */
+
+static struct serio_dev spaceorb_dev = {
+	interrupt:	spaceorb_interrupt,
+	connect:	spaceorb_connect,
+	disconnect:	spaceorb_disconnect,
+};
+
+/*
+ * The functions for inserting/removing us as a module.
+ */
+
+int __init spaceorb_init(void)
+{
+	serio_register_device(&spaceorb_dev);
+	return 0;
+}
+
+void __exit spaceorb_exit(void)
+{
+	serio_unregister_device(&spaceorb_dev);
+}
+
+module_init(spaceorb_init);
+module_exit(spaceorb_exit);