Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 319 insertions, 0 deletions

diff --git a/drivers/input/joystick/spaceball.c b/drivers/input/joystick/spaceball.c
new file mode 100644
index 0000000..ec0a2a6
--- /dev/null
+++ b/drivers/input/joystick/spaceball.c
@@ -0,0 +1,319 @@
+/*
+ * $Id: spaceball.c,v 1.17 2002/01/22 20:29:03 vojtech Exp $
+ *
+ *  Copyright (c) 1999-2001 Vojtech Pavlik
+ *
+ *  Based on the work of:
+ *  	David Thompson
+ *  	Joseph Krahn
+ */
+
+/*
+ * SpaceTec SpaceBall 2003/3003/4000 FLX 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@ucw.cz>, or by paper mail:
+ * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/serio.h>
+
+#define DRIVER_DESC	"SpaceTec SpaceBall 2003/3003/4000 FLX driver"
+
+MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+/*
+ * Constants.
+ */
+
+#define SPACEBALL_MAX_LENGTH	128
+#define SPACEBALL_MAX_ID	8
+
+#define SPACEBALL_1003      1
+#define SPACEBALL_2003B     3
+#define SPACEBALL_2003C     4
+#define SPACEBALL_3003C     7
+#define SPACEBALL_4000FLX   8
+#define SPACEBALL_4000FLX_L 9
+
+static int spaceball_axes[] = { ABS_X, ABS_Z, ABS_Y, ABS_RX, ABS_RZ, ABS_RY };
+static char *spaceball_names[] = {
+	"?", "SpaceTec SpaceBall 1003", "SpaceTec SpaceBall 2003", "SpaceTec SpaceBall 2003B",
+	"SpaceTec SpaceBall 2003C", "SpaceTec SpaceBall 3003", "SpaceTec SpaceBall SpaceController",
+	"SpaceTec SpaceBall 3003C", "SpaceTec SpaceBall 4000FLX", "SpaceTec SpaceBall 4000FLX Lefty" };
+
+/*
+ * Per-Ball data.
+ */
+
+struct spaceball {
+	struct input_dev dev;
+	struct serio *serio;
+	int idx;
+	int escape;
+	unsigned char data[SPACEBALL_MAX_LENGTH];
+	char phys[32];
+};
+
+/*
+ * spaceball_process_packet() decodes packets the driver receives from the
+ * SpaceBall.
+ */
+
+static void spaceball_process_packet(struct spaceball* spaceball, struct pt_regs *regs)
+{
+	struct input_dev *dev = &spaceball->dev;
+	unsigned char *data = spaceball->data;
+	int i;
+
+	if (spaceball->idx < 2) return;
+
+	input_regs(dev, regs);
+
+	switch (spaceball->data[0]) {
+
+		case 'D':					/* Ball data */
+			if (spaceball->idx != 15) return;
+			for (i = 0; i < 6; i++)
+				input_report_abs(dev, spaceball_axes[i],
+					(__s16)((data[2 * i + 3] << 8) | data[2 * i + 2]));
+			break;
+
+		case 'K':					/* Button data */
+			if (spaceball->idx != 3) return;
+			input_report_key(dev, BTN_1, (data[2] & 0x01) || (data[2] & 0x20));
+			input_report_key(dev, BTN_2, data[2] & 0x02);
+			input_report_key(dev, BTN_3, data[2] & 0x04);
+			input_report_key(dev, BTN_4, data[2] & 0x08);
+			input_report_key(dev, BTN_5, data[1] & 0x01);
+			input_report_key(dev, BTN_6, data[1] & 0x02);
+			input_report_key(dev, BTN_7, data[1] & 0x04);
+			input_report_key(dev, BTN_8, data[1] & 0x10);
+			break;
+
+		case '.':					/* Advanced button data */
+			if (spaceball->idx != 3) return;
+			input_report_key(dev, BTN_1, data[2] & 0x01);
+			input_report_key(dev, BTN_2, data[2] & 0x02);
+			input_report_key(dev, BTN_3, data[2] & 0x04);
+			input_report_key(dev, BTN_4, data[2] & 0x08);
+			input_report_key(dev, BTN_5, data[2] & 0x10);
+			input_report_key(dev, BTN_6, data[2] & 0x20);
+			input_report_key(dev, BTN_7, data[2] & 0x80);
+			input_report_key(dev, BTN_8, data[1] & 0x01);
+			input_report_key(dev, BTN_9, data[1] & 0x02);
+			input_report_key(dev, BTN_A, data[1] & 0x04);
+			input_report_key(dev, BTN_B, data[1] & 0x08);
+			input_report_key(dev, BTN_C, data[1] & 0x10);
+			input_report_key(dev, BTN_MODE, data[1] & 0x20);
+			break;
+
+		case 'E':					/* Device error */
+			spaceball->data[spaceball->idx - 1] = 0;
+			printk(KERN_ERR "spaceball: Device error. [%s]\n", spaceball->data + 1);
+			break;
+
+		case '?':					/* Bad command packet */
+			spaceball->data[spaceball->idx - 1] = 0;
+			printk(KERN_ERR "spaceball: Bad command. [%s]\n", spaceball->data + 1);
+			break;
+	}
+
+	input_sync(dev);
+}
+
+/*
+ * Spaceball 4000 FLX packets all start with a one letter packet-type decriptor,
+ * and end in 0x0d. It uses '^' as an escape for CR, XOFF and XON characters which
+ * can occur in the axis values.
+ */
+
+static irqreturn_t spaceball_interrupt(struct serio *serio,
+		unsigned char data, unsigned int flags, struct pt_regs *regs)
+{
+	struct spaceball *spaceball = serio_get_drvdata(serio);
+
+	switch (data) {
+		case 0xd:
+			spaceball_process_packet(spaceball, regs);
+			spaceball->idx = 0;
+			spaceball->escape = 0;
+			break;
+		case '^':
+			if (!spaceball->escape) {
+				spaceball->escape = 1;
+				break;
+			}
+			spaceball->escape = 0;
+		case 'M':
+		case 'Q':
+		case 'S':
+			if (spaceball->escape) {
+				spaceball->escape = 0;
+				data &= 0x1f;
+			}
+		default:
+			if (spaceball->escape)
+				spaceball->escape = 0;
+			if (spaceball->idx < SPACEBALL_MAX_LENGTH)
+				spaceball->data[spaceball->idx++] = data;
+			break;
+	}
+	return IRQ_HANDLED;
+}
+
+/*
+ * spaceball_disconnect() is the opposite of spaceball_connect()
+ */
+
+static void spaceball_disconnect(struct serio *serio)
+{
+	struct spaceball* spaceball = serio_get_drvdata(serio);
+
+	input_unregister_device(&spaceball->dev);
+	serio_close(serio);
+	serio_set_drvdata(serio, NULL);
+	kfree(spaceball);
+}
+
+/*
+ * spaceball_connect() is the routine that is called when someone adds a
+ * new serio device that supports Spaceball protocol and registers it as
+ * an input device.
+ */
+
+static int spaceball_connect(struct serio *serio, struct serio_driver *drv)
+{
+	struct spaceball *spaceball;
+	int i, t, id;
+	int err;
+
+	if ((id = serio->id.id) > SPACEBALL_MAX_ID)
+		return -ENODEV;
+
+	if (!(spaceball = kmalloc(sizeof(struct spaceball), GFP_KERNEL)))
+		return - ENOMEM;
+
+	memset(spaceball, 0, sizeof(struct spaceball));
+
+	spaceball->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+
+	switch (id) {
+		case SPACEBALL_4000FLX:
+		case SPACEBALL_4000FLX_L:
+			spaceball->dev.keybit[LONG(BTN_0)] |= BIT(BTN_9);
+			spaceball->dev.keybit[LONG(BTN_A)] |= BIT(BTN_A) | BIT(BTN_B) | BIT(BTN_C) | BIT(BTN_MODE);
+		default:
+			spaceball->dev.keybit[LONG(BTN_0)] |= BIT(BTN_2) | BIT(BTN_3) | BIT(BTN_4)
+				| BIT(BTN_5) | BIT(BTN_6) | BIT(BTN_7) | BIT(BTN_8);
+		case SPACEBALL_3003C:
+			spaceball->dev.keybit[LONG(BTN_0)] |= BIT(BTN_1) | BIT(BTN_8);
+	}
+
+	for (i = 0; i < 6; i++) {
+		t = spaceball_axes[i];
+		set_bit(t, spaceball->dev.absbit);
+		spaceball->dev.absmin[t] = i < 3 ? -8000 : -1600;
+		spaceball->dev.absmax[t] = i < 3 ?  8000 :  1600;
+		spaceball->dev.absflat[t] = i < 3 ? 40 : 8;
+		spaceball->dev.absfuzz[t] = i < 3 ? 8 : 2;
+	}
+
+	spaceball->serio = serio;
+	spaceball->dev.private = spaceball;
+
+	sprintf(spaceball->phys, "%s/input0", serio->phys);
+
+	init_input_dev(&spaceball->dev);
+	spaceball->dev.name = spaceball_names[id];
+	spaceball->dev.phys = spaceball->phys;
+	spaceball->dev.id.bustype = BUS_RS232;
+	spaceball->dev.id.vendor = SERIO_SPACEBALL;
+	spaceball->dev.id.product = id;
+	spaceball->dev.id.version = 0x0100;
+	spaceball->dev.dev = &serio->dev;
+
+	serio_set_drvdata(serio, spaceball);
+
+	err = serio_open(serio, drv);
+	if (err) {
+		serio_set_drvdata(serio, NULL);
+		kfree(spaceball);
+		return err;
+	}
+
+	input_register_device(&spaceball->dev);
+
+	printk(KERN_INFO "input: %s on serio%s\n",
+		spaceball_names[id], serio->phys);
+
+	return 0;
+}
+
+/*
+ * The serio driver structure.
+ */
+
+static struct serio_device_id spaceball_serio_ids[] = {
+	{
+		.type	= SERIO_RS232,
+		.proto	= SERIO_SPACEBALL,
+		.id	= SERIO_ANY,
+		.extra	= SERIO_ANY,
+	},
+	{ 0 }
+};
+
+MODULE_DEVICE_TABLE(serio, spaceball_serio_ids);
+
+static struct serio_driver spaceball_drv = {
+	.driver		= {
+		.name	= "spaceball",
+	},
+	.description	= DRIVER_DESC,
+	.id_table	= spaceball_serio_ids,
+	.interrupt	= spaceball_interrupt,
+	.connect	= spaceball_connect,
+	.disconnect	= spaceball_disconnect,
+};
+
+/*
+ * The functions for inserting/removing us as a module.
+ */
+
+static int __init spaceball_init(void)
+{
+	serio_register_driver(&spaceball_drv);
+	return 0;
+}
+
+static void __exit spaceball_exit(void)
+{
+	serio_unregister_driver(&spaceball_drv);
+}
+
+module_init(spaceball_init);
+module_exit(spaceball_exit);