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 000000000000..ec0a2a64d49c
--- /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);