[RFC PATCH 2/5] Input: logibm - remove driver

[Dmitry Torokhov <dmitry.torokhov@gmail.com>]

Bus mice use specialized bus interface implemented via an ISA add-in
cards. They were superseded by PS/2 and later USB.

Kconfig entry for the Logitech bus mice states that they "are rather
rare these days". This statement was true in 2002 and is no less true
in 2024.

Remove the driver.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
 drivers/input/mouse/Kconfig  |  10 ---
 drivers/input/mouse/Makefile |   1 -
 drivers/input/mouse/logibm.c | 166 -----------------------------------
 3 files changed, 177 deletions(-)
 delete mode 100644 drivers/input/mouse/logibm.c

diff --git a/drivers/input/mouse/Kconfig b/drivers/input/mouse/Kconfig
index 9c3102fa8e3c..f660e6ba24c2 100644
--- a/drivers/input/mouse/Kconfig
+++ b/drivers/input/mouse/Kconfig
@@ -312,16 +312,6 @@ config MOUSE_ELAN_I2C_SMBUS
 
 	   If unsure, say Y.
 
-config MOUSE_LOGIBM
-	tristate "Logitech busmouse"
-	depends on ISA
-	help
-	  Say Y here if you have a Logitech busmouse.
-	  They are rather rare these days.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called logibm.
-
 config MOUSE_PC110PAD
 	tristate "IBM PC110 touchpad"
 	depends on ISA
diff --git a/drivers/input/mouse/Makefile b/drivers/input/mouse/Makefile
index ef96db1fc945..e745b64fed49 100644
--- a/drivers/input/mouse/Makefile
+++ b/drivers/input/mouse/Makefile
@@ -12,7 +12,6 @@ obj-$(CONFIG_MOUSE_BCM5974)		+= bcm5974.o
 obj-$(CONFIG_MOUSE_CYAPA)		+= cyapatp.o
 obj-$(CONFIG_MOUSE_ELAN_I2C)		+= elan_i2c.o
 obj-$(CONFIG_MOUSE_GPIO)		+= gpio_mouse.o
-obj-$(CONFIG_MOUSE_LOGIBM)		+= logibm.o
 obj-$(CONFIG_MOUSE_MAPLE)		+= maplemouse.o
 obj-$(CONFIG_MOUSE_PC110PAD)		+= pc110pad.o
 obj-$(CONFIG_MOUSE_PS2)			+= psmouse.o
diff --git a/drivers/input/mouse/logibm.c b/drivers/input/mouse/logibm.c
deleted file mode 100644
index 0aab63dbc30a..000000000000
--- a/drivers/input/mouse/logibm.c
+++ /dev/null
@@ -1,166 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- *  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
- */
-
-#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_hw_named(irq, logibm_irq, uint, irq, 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);
-- 
2.46.0.76.ge559c4bf1a-goog