1 files changed, 183 insertions, 0 deletions

diff --git a/drivers/input/mouse/logibm.c b/drivers/input/mouse/logibm.c
new file mode 100644
index 000000000000..77eb83e87f61
--- /dev/null
+++ b/drivers/input/mouse/logibm.c
@@ -0,0 +1,183 @@
+/*
+ * $Id: logibm.c,v 1.11 2001/09/25 10:12:07 vojtech Exp $
+ *
+ *  Copyright (c) 1999-2001 Vojtech Pavlik
+ *
+ *  Based on the work of:
+ *      James Banks             Matthew Dillon
+ *      David Giller            Nathan Laredo
+ *      Linus Torvalds          Johan Myreen
+ *      Cliff Matthews          Philip Blundell
+ *      Russell King
+ */
+
+/*
+ * Logitech Bus Mouse 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/module.h>
+#include <linux/moduleparam.h>
+#include <linux/delay.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+
+#include <asm/io.h>
+#include <asm/irq.h>
+
+MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
+MODULE_DESCRIPTION("Logitech busmouse driver");
+MODULE_LICENSE("GPL");
+
+#define LOGIBM_BASE             0x23c
+#define LOGIBM_EXTENT           4
+
+#define LOGIBM_DATA_PORT        LOGIBM_BASE + 0
+#define LOGIBM_SIGNATURE_PORT   LOGIBM_BASE + 1
+#define LOGIBM_CONTROL_PORT     LOGIBM_BASE + 2
+#define LOGIBM_CONFIG_PORT      LOGIBM_BASE + 3
+
+#define LOGIBM_ENABLE_IRQ       0x00
+#define LOGIBM_DISABLE_IRQ      0x10
+#define LOGIBM_READ_X_LOW       0x80
+#define LOGIBM_READ_X_HIGH      0xa0
+#define LOGIBM_READ_Y_LOW       0xc0
+#define LOGIBM_READ_Y_HIGH      0xe0
+
+#define LOGIBM_DEFAULT_MODE     0x90
+#define LOGIBM_CONFIG_BYTE      0x91
+#define LOGIBM_SIGNATURE_BYTE   0xa5
+
+#define LOGIBM_IRQ              5
+
+static int logibm_irq = LOGIBM_IRQ;
+module_param_named(irq, logibm_irq, uint, 0);
+MODULE_PARM_DESC(irq, "IRQ number (5=default)");
+
+__obsolete_setup("logibm_irq=");
+
+static int logibm_used = 0;
+
+static irqreturn_t logibm_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+
+static int logibm_open(struct input_dev *dev)
+{
+        if (logibm_used++)
+                return 0;
+        if (request_irq(logibm_irq, logibm_interrupt, 0, "logibm", NULL)) {
+                logibm_used--;
+                printk(KERN_ERR "logibm.c: Can't allocate irq %d\n", logibm_irq);
+                return -EBUSY;
+        }
+        outb(LOGIBM_ENABLE_IRQ, LOGIBM_CONTROL_PORT);
+        return 0;
+}
+
+static void logibm_close(struct input_dev *dev)
+{
+        if (--logibm_used)
+                return;
+        outb(LOGIBM_DISABLE_IRQ, LOGIBM_CONTROL_PORT);
+        free_irq(logibm_irq, NULL);
+}
+
+static struct input_dev logibm_dev = {
+        .evbit  = { BIT(EV_KEY) | BIT(EV_REL) },
+        .keybit = { [LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT) },
+        .relbit = { BIT(REL_X) | BIT(REL_Y) },
+        .open   = logibm_open,
+        .close  = logibm_close,
+        .name   = "Logitech bus mouse",
+        .phys   = "isa023c/input0",
+        .id     = {
+                .bustype = BUS_ISA,
+                .vendor  = 0x0003,
+                .product = 0x0001,
+                .version = 0x0100,
+        },
+};
+
+static irqreturn_t logibm_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+        char dx, dy;
+        unsigned char buttons;
+
+        outb(LOGIBM_READ_X_LOW, LOGIBM_CONTROL_PORT);
+        dx = (inb(LOGIBM_DATA_PORT) & 0xf);
+        outb(LOGIBM_READ_X_HIGH, LOGIBM_CONTROL_PORT);
+        dx |= (inb(LOGIBM_DATA_PORT) & 0xf) << 4;
+        outb(LOGIBM_READ_Y_LOW, LOGIBM_CONTROL_PORT);
+        dy = (inb(LOGIBM_DATA_PORT) & 0xf);
+        outb(LOGIBM_READ_Y_HIGH, LOGIBM_CONTROL_PORT);
+        buttons = inb(LOGIBM_DATA_PORT);
+        dy |= (buttons & 0xf) << 4;
+        buttons = ~buttons >> 5;
+
+        input_regs(&logibm_dev, regs);
+        input_report_rel(&logibm_dev, REL_X, dx);
+        input_report_rel(&logibm_dev, REL_Y, dy);
+        input_report_key(&logibm_dev, BTN_RIGHT,  buttons & 1);
+        input_report_key(&logibm_dev, BTN_MIDDLE, buttons & 2);
+        input_report_key(&logibm_dev, BTN_LEFT,   buttons & 4);
+        input_sync(&logibm_dev);
+
+        outb(LOGIBM_ENABLE_IRQ, LOGIBM_CONTROL_PORT);
+        return IRQ_HANDLED;
+}
+
+static int __init logibm_init(void)
+{
+        if (!request_region(LOGIBM_BASE, LOGIBM_EXTENT, "logibm")) {
+                printk(KERN_ERR "logibm.c: Can't allocate ports at %#x\n", LOGIBM_BASE);
+                return -EBUSY;
+        }
+
+        outb(LOGIBM_CONFIG_BYTE, LOGIBM_CONFIG_PORT);
+        outb(LOGIBM_SIGNATURE_BYTE, LOGIBM_SIGNATURE_PORT);
+        udelay(100);
+
+        if (inb(LOGIBM_SIGNATURE_PORT) != LOGIBM_SIGNATURE_BYTE) {
+                release_region(LOGIBM_BASE, LOGIBM_EXTENT);
+                printk(KERN_ERR "logibm.c: Didn't find Logitech busmouse at %#x\n", LOGIBM_BASE);
+                return -ENODEV;
+        }
+
+        outb(LOGIBM_DEFAULT_MODE, LOGIBM_CONFIG_PORT);
+        outb(LOGIBM_DISABLE_IRQ, LOGIBM_CONTROL_PORT);
+
+        input_register_device(&logibm_dev);
+        
+        printk(KERN_INFO "input: Logitech bus mouse at %#x irq %d\n", LOGIBM_BASE, logibm_irq);
+
+        return 0;
+}
+
+static void __exit logibm_exit(void)
+{
+        input_unregister_device(&logibm_dev);
+        release_region(LOGIBM_BASE, LOGIBM_EXTENT);
+}
+
+module_init(logibm_init);
+module_exit(logibm_exit);