1 files changed, 236 insertions, 0 deletions

diff --git a/drivers/input/joystick/stinger.c b/drivers/input/joystick/stinger.c
new file mode 100644
index 000000000000..6f6e6753d590
--- /dev/null
+++ b/drivers/input/joystick/stinger.c
@@ -0,0 +1,236 @@
+/*
+ * $Id: stinger.c,v 1.10 2002/01/22 20:29:31 vojtech Exp $
+ *
+ *  Copyright (c) 2000-2001 Vojtech Pavlik
+ *  Copyright (c) 2000 Mark Fletcher
+ */
+
+/*
+ * Gravis Stinger gamepad driver for Linux
+ */
+
+/*
+ * This program is free warftware; 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/module.h>
+#include <linux/slab.h>
+#include <linux/input.h>
+#include <linux/serio.h>
+#include <linux/init.h>
+
+#define DRIVER_DESC     "Gravis Stinger gamepad driver"
+
+MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+/*
+ * Constants.
+ */
+
+#define STINGER_MAX_LENGTH 8
+
+static char *stinger_name = "Gravis Stinger";
+
+/*
+ * Per-Stinger data.
+ */
+
+struct stinger {
+        struct input_dev dev;
+        int idx;
+        unsigned char data[STINGER_MAX_LENGTH];
+        char phys[32];
+};
+
+/*
+ * stinger_process_packet() decodes packets the driver receives from the
+ * Stinger. It updates the data accordingly.
+ */
+
+static void stinger_process_packet(struct stinger *stinger, struct pt_regs *regs)
+{
+        struct input_dev *dev = &stinger->dev;
+        unsigned char *data = stinger->data;
+
+        if (!stinger->idx) return;
+
+        input_regs(dev, regs);
+
+        input_report_key(dev, BTN_A,      ((data[0] & 0x20) >> 5));
+        input_report_key(dev, BTN_B,      ((data[0] & 0x10) >> 4));
+        input_report_key(dev, BTN_C,      ((data[0] & 0x08) >> 3));
+        input_report_key(dev, BTN_X,      ((data[0] & 0x04) >> 2));
+        input_report_key(dev, BTN_Y,      ((data[3] & 0x20) >> 5));
+        input_report_key(dev, BTN_Z,      ((data[3] & 0x10) >> 4));
+        input_report_key(dev, BTN_TL,     ((data[3] & 0x08) >> 3));
+        input_report_key(dev, BTN_TR,     ((data[3] & 0x04) >> 2));
+        input_report_key(dev, BTN_SELECT, ((data[3] & 0x02) >> 1));
+        input_report_key(dev, BTN_START,   (data[3] & 0x01));
+
+        input_report_abs(dev, ABS_X, (data[1] & 0x3F) - ((data[0] & 0x01) << 6));
+        input_report_abs(dev, ABS_Y, ((data[0] & 0x02) << 5) - (data[2] & 0x3F));
+
+        input_sync(dev);
+
+        return;
+}
+
+/*
+ * stinger_interrupt() is called by the low level driver when characters
+ * are ready for us. We then buffer them for further processing, or call the
+ * packet processing routine.
+ */
+
+static irqreturn_t stinger_interrupt(struct serio *serio,
+        unsigned char data, unsigned int flags, struct pt_regs *regs)
+{
+        struct stinger *stinger = serio_get_drvdata(serio);
+
+        /* All Stinger packets are 4 bytes */
+
+        if (stinger->idx < STINGER_MAX_LENGTH)
+                stinger->data[stinger->idx++] = data;
+
+        if (stinger->idx == 4) {
+                stinger_process_packet(stinger, regs);
+                stinger->idx = 0;
+        }
+
+        return IRQ_HANDLED;
+}
+
+/*
+ * stinger_disconnect() is the opposite of stinger_connect()
+ */
+
+static void stinger_disconnect(struct serio *serio)
+{
+        struct stinger *stinger = serio_get_drvdata(serio);
+
+        input_unregister_device(&stinger->dev);
+        serio_close(serio);
+        serio_set_drvdata(serio, NULL);
+        kfree(stinger);
+}
+
+/*
+ * stinger_connect() is the routine that is called when someone adds a
+ * new serio device that supports Stinger protocol and registers it as
+ * an input device.
+ */
+
+static int stinger_connect(struct serio *serio, struct serio_driver *drv)
+{
+        struct stinger *stinger;
+        int i;
+        int err;
+
+        if (!(stinger = kmalloc(sizeof(struct stinger), GFP_KERNEL)))
+                return -ENOMEM;
+
+        memset(stinger, 0, sizeof(struct stinger));
+
+        stinger->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+        stinger->dev.keybit[LONG(BTN_A)] = BIT(BTN_A) | BIT(BTN_B) | BIT(BTN_C) | BIT(BTN_X) | \
+                                           BIT(BTN_Y) | BIT(BTN_Z) | BIT(BTN_TL) | BIT(BTN_TR) | \
+                                           BIT(BTN_START) | BIT(BTN_SELECT);
+        stinger->dev.absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
+
+        sprintf(stinger->phys, "%s/serio0", serio->phys);
+
+        init_input_dev(&stinger->dev);
+        stinger->dev.name = stinger_name;
+        stinger->dev.phys = stinger->phys;
+        stinger->dev.id.bustype = BUS_RS232;
+        stinger->dev.id.vendor = SERIO_STINGER;
+        stinger->dev.id.product = 0x0001;
+        stinger->dev.id.version = 0x0100;
+        stinger->dev.dev = &serio->dev;
+
+        for (i = 0; i < 2; i++) {
+                stinger->dev.absmax[ABS_X+i] =  64;
+                stinger->dev.absmin[ABS_X+i] = -64;
+                stinger->dev.absflat[ABS_X+i] = 4;
+        }
+
+        stinger->dev.private = stinger;
+
+        serio_set_drvdata(serio, stinger);
+
+        err = serio_open(serio, drv);
+        if (err) {
+                serio_set_drvdata(serio, NULL);
+                kfree(stinger);
+                return err;
+        }
+
+        input_register_device(&stinger->dev);
+
+        printk(KERN_INFO "input: %s on %s\n",  stinger_name, serio->phys);
+
+        return 0;
+}
+
+/*
+ * The serio driver structure.
+ */
+
+static struct serio_device_id stinger_serio_ids[] = {
+        {
+                .type   = SERIO_RS232,
+                .proto  = SERIO_STINGER,
+                .id     = SERIO_ANY,
+                .extra  = SERIO_ANY,
+        },
+        { 0 }
+};
+
+MODULE_DEVICE_TABLE(serio, stinger_serio_ids);
+
+static struct serio_driver stinger_drv = {
+        .driver         = {
+                .name   = "stinger",
+        },
+        .description    = DRIVER_DESC,
+        .id_table       = stinger_serio_ids,
+        .interrupt      = stinger_interrupt,
+        .connect        = stinger_connect,
+        .disconnect     = stinger_disconnect,
+};
+
+/*
+ * The functions for inserting/removing us as a module.
+ */
+
+static int __init stinger_init(void)
+{
+        serio_register_driver(&stinger_drv);
+        return 0;
+}
+
+static void __exit stinger_exit(void)
+{
+        serio_unregister_driver(&stinger_drv);
+}
+
+module_init(stinger_init);
+module_exit(stinger_exit);