1 files changed, 188 insertions, 0 deletions

diff --git a/drivers/input/keyboard/xtkbd.c b/drivers/input/keyboard/xtkbd.c
new file mode 100644
index 000000000000..19eaec7789d1
--- /dev/null
+++ b/drivers/input/keyboard/xtkbd.c
@@ -0,0 +1,188 @@
+/*
+ * $Id: xtkbd.c,v 1.11 2001/09/25 10:12:07 vojtech Exp $
+ *
+ *  Copyright (c) 1999-2001 Vojtech Pavlik
+ */
+
+/*
+ * XT keyboard 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/slab.h>
+#include <linux/module.h>
+#include <linux/input.h>
+#include <linux/init.h>
+#include <linux/serio.h>
+
+#define DRIVER_DESC     "XT keyboard driver"
+
+MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+#define XTKBD_EMUL0     0xe0
+#define XTKBD_EMUL1     0xe1
+#define XTKBD_KEY       0x7f
+#define XTKBD_RELEASE   0x80
+
+static unsigned char xtkbd_keycode[256] = {
+          0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
+         16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
+         32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
+         48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
+         64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
+         80, 81, 82, 83,  0,  0,  0, 87, 88,  0,  0,  0,  0,  0,  0,  0,
+          0,  0,  0,  0,  0, 87, 88,  0,  0,  0,  0,110,111,103,108,105,
+        106
+};
+
+static char *xtkbd_name = "XT Keyboard";
+
+struct xtkbd {
+        unsigned char keycode[256];
+        struct input_dev dev;
+        struct serio *serio;
+        char phys[32];
+};
+
+static irqreturn_t xtkbd_interrupt(struct serio *serio,
+        unsigned char data, unsigned int flags, struct pt_regs *regs)
+{
+        struct xtkbd *xtkbd = serio_get_drvdata(serio);
+
+        switch (data) {
+                case XTKBD_EMUL0:
+                case XTKBD_EMUL1:
+                        break;
+                default:
+
+                        if (xtkbd->keycode[data & XTKBD_KEY]) {
+                                input_regs(&xtkbd->dev, regs);
+                                input_report_key(&xtkbd->dev, xtkbd->keycode[data & XTKBD_KEY], !(data & XTKBD_RELEASE));
+                                input_sync(&xtkbd->dev);
+                        } else {
+                                printk(KERN_WARNING "xtkbd.c: Unknown key (scancode %#x) %s.\n",
+                                        data & XTKBD_KEY, data & XTKBD_RELEASE ? "released" : "pressed");
+                        }
+        }
+        return IRQ_HANDLED;
+}
+
+static int xtkbd_connect(struct serio *serio, struct serio_driver *drv)
+{
+        struct xtkbd *xtkbd;
+        int i;
+        int err;
+
+        if (!(xtkbd = kmalloc(sizeof(struct xtkbd), GFP_KERNEL)))
+                return -ENOMEM;
+
+        memset(xtkbd, 0, sizeof(struct xtkbd));
+
+        xtkbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
+
+        xtkbd->serio = serio;
+
+        init_input_dev(&xtkbd->dev);
+        xtkbd->dev.keycode = xtkbd->keycode;
+        xtkbd->dev.keycodesize = sizeof(unsigned char);
+        xtkbd->dev.keycodemax = ARRAY_SIZE(xtkbd_keycode);
+        xtkbd->dev.private = xtkbd;
+
+        serio_set_drvdata(serio, xtkbd);
+
+        err = serio_open(serio, drv);
+        if (err) {
+                serio_set_drvdata(serio, NULL);
+                kfree(xtkbd);
+                return err;
+        }
+
+        memcpy(xtkbd->keycode, xtkbd_keycode, sizeof(xtkbd->keycode));
+        for (i = 0; i < 255; i++)
+                set_bit(xtkbd->keycode[i], xtkbd->dev.keybit);
+        clear_bit(0, xtkbd->dev.keybit);
+
+        sprintf(xtkbd->phys, "%s/input0", serio->phys);
+
+        xtkbd->dev.name = xtkbd_name;
+        xtkbd->dev.phys = xtkbd->phys;
+        xtkbd->dev.id.bustype = BUS_XTKBD;
+        xtkbd->dev.id.vendor = 0x0001;
+        xtkbd->dev.id.product = 0x0001;
+        xtkbd->dev.id.version = 0x0100;
+        xtkbd->dev.dev = &serio->dev;
+
+        input_register_device(&xtkbd->dev);
+
+        printk(KERN_INFO "input: %s on %s\n", xtkbd_name, serio->phys);
+
+        return 0;
+}
+
+static void xtkbd_disconnect(struct serio *serio)
+{
+        struct xtkbd *xtkbd = serio_get_drvdata(serio);
+
+        input_unregister_device(&xtkbd->dev);
+        serio_close(serio);
+        serio_set_drvdata(serio, NULL);
+        kfree(xtkbd);
+}
+
+static struct serio_device_id xtkbd_serio_ids[] = {
+        {
+                .type   = SERIO_XT,
+                .proto  = SERIO_ANY,
+                .id     = SERIO_ANY,
+                .extra  = SERIO_ANY,
+        },
+        { 0 }
+};
+
+MODULE_DEVICE_TABLE(serio, xtkbd_serio_ids);
+
+static struct serio_driver xtkbd_drv = {
+        .driver         = {
+                .name   = "xtkbd",
+        },
+        .description    = DRIVER_DESC,
+        .id_table       = xtkbd_serio_ids,
+        .interrupt      = xtkbd_interrupt,
+        .connect        = xtkbd_connect,
+        .disconnect     = xtkbd_disconnect,
+};
+
+static int __init xtkbd_init(void)
+{
+        serio_register_driver(&xtkbd_drv);
+        return 0;
+}
+
+static void __exit xtkbd_exit(void)
+{
+        serio_unregister_driver(&xtkbd_drv);
+}
+
+module_init(xtkbd_init);
+module_exit(xtkbd_exit);