Initial import

1 files changed, 185 insertions, 0 deletions

diff --git a/drivers/input/mouse/logibm.c b/drivers/input/mouse/logibm.c
new file mode 100644
index 000000000..e2413113d
--- /dev/null
+++ b/drivers/input/mouse/logibm.c
@@ -0,0 +1,185 @@
+/*
+ *  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/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)");
+
+static struct input_dev *logibm_dev;
+
+static irqreturn_t logibm_interrupt(int irq, void *dev_id)
+{
+	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_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 logibm_open(struct input_dev *dev)
+{
+	if (request_irq(logibm_irq, logibm_interrupt, 0, "logibm", NULL)) {
+		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)
+{
+	outb(LOGIBM_DISABLE_IRQ, LOGIBM_CONTROL_PORT);
+	free_irq(logibm_irq, NULL);
+}
+
+static int __init logibm_init(void)
+{
+	int err;
+
+	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) {
+		printk(KERN_INFO "logibm.c: Didn't find Logitech busmouse at %#x\n", LOGIBM_BASE);
+		err = -ENODEV;
+		goto err_release_region;
+	}
+
+	outb(LOGIBM_DEFAULT_MODE, LOGIBM_CONFIG_PORT);
+	outb(LOGIBM_DISABLE_IRQ, LOGIBM_CONTROL_PORT);
+
+	logibm_dev = input_allocate_device();
+	if (!logibm_dev) {
+		printk(KERN_ERR "logibm.c: Not enough memory for input device\n");
+		err = -ENOMEM;
+		goto err_release_region;
+	}
+
+	logibm_dev->name = "Logitech bus mouse";
+	logibm_dev->phys = "isa023c/input0";
+	logibm_dev->id.bustype = BUS_ISA;
+	logibm_dev->id.vendor  = 0x0003;
+	logibm_dev->id.product = 0x0001;
+	logibm_dev->id.version = 0x0100;
+
+	logibm_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
+	logibm_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
+		BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
+	logibm_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
+
+	logibm_dev->open  = logibm_open;
+	logibm_dev->close = logibm_close;
+
+	err = input_register_device(logibm_dev);
+	if (err)
+		goto err_free_dev;
+
+	return 0;
+
+ err_free_dev:
+	input_free_device(logibm_dev);
+ err_release_region:
+	release_region(LOGIBM_BASE, LOGIBM_EXTENT);
+
+	return err;
+}
+
+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);