Input: pc110pad - remove driver

Palm Top PC 110 is a handheld personal computer with 80486SX CPU that was
released exclusively in Japan in September 1995.

While the kernel still supports 486 CPU it is highly unlikely that anyone
is using this device with the latest kernel.

Remove the driver.

[bhelgaas: since this was posted, "x86/cpu: Remove M486/M486SX/ELAN
support" has been queued for v7.1, so pc110pad is no longer relevant:
https://lore.kernel.org/all/20251214084710.3606385-2-mingo@kernel.org/]

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20240808172733.1194442-4-dmitry.torokhov@gmail.com

diff --git a/drivers/input/mouse/Kconfig b/drivers/input/mouse/Kconfig
index 833b643f06164920eda67705356e7c9321ac512b..c8b87a87744c28674f450a08fed743b8a6d134c2 100644 (file)
--- a/drivers/input/mouse/Kconfig
+++ b/drivers/input/mouse/Kconfig
@@ -326,16 +326,6 @@ config MOUSE_LOGIBM
          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
-       help
-         Say Y if you have the IBM PC-110 micro-notebook and want its
-         touchpad supported.
-
-         To compile this driver as a module, choose M here: the
-         module will be called pc110pad.
-
 config MOUSE_AMIGA
        tristate "Amiga mouse"
        depends on AMIGA

diff --git a/drivers/input/mouse/Makefile b/drivers/input/mouse/Makefile
index a1336d5bee6f33dd1733b66e77d6229134f14fdb..78ab5db28d7c09890cb341bd67d7bdf31fa09e90 100644 (file)
--- a/drivers/input/mouse/Makefile
+++ b/drivers/input/mouse/Makefile
@@ -15,7 +15,6 @@ obj-$(CONFIG_MOUSE_GPIO)              += gpio_mouse.o
 obj-$(CONFIG_MOUSE_INPORT)             += inport.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
 obj-$(CONFIG_MOUSE_RISCPC)             += rpcmouse.o
 obj-$(CONFIG_MOUSE_SERIAL)             += sermouse.o

diff --git a/drivers/input/mouse/pc110pad.c b/drivers/input/mouse/pc110pad.c
deleted file mode 100644 (file)
index efa5804..0000000
--- a/drivers/input/mouse/pc110pad.c
+++ /dev/null
@@ -1,160 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- *  Copyright (c) 2000-2001 Vojtech Pavlik
- *
- *  Based on the work of:
- *     Alan Cox        Robin O'Leary
- */
-
-/*
- * IBM PC110 touchpad driver for Linux
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/ioport.h>
-#include <linux/input.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/pci.h>
-#include <linux/delay.h>
-
-#include <asm/io.h>
-#include <asm/irq.h>
-
-MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
-MODULE_DESCRIPTION("IBM PC110 touchpad driver");
-MODULE_LICENSE("GPL");
-
-#define PC110PAD_OFF   0x30
-#define PC110PAD_ON    0x38
-
-static int pc110pad_irq = 10;
-static int pc110pad_io = 0x15e0;
-
-static struct input_dev *pc110pad_dev;
-static int pc110pad_data[3];
-static int pc110pad_count;
-
-static irqreturn_t pc110pad_interrupt(int irq, void *ptr)
-{
-       int value     = inb_p(pc110pad_io);
-       int handshake = inb_p(pc110pad_io + 2);
-
-       outb(handshake |  1, pc110pad_io + 2);
-       udelay(2);
-       outb(handshake & ~1, pc110pad_io + 2);
-       udelay(2);
-       inb_p(0x64);
-
-       pc110pad_data[pc110pad_count++] = value;
-
-       if (pc110pad_count < 3)
-               return IRQ_HANDLED;
-
-       input_report_key(pc110pad_dev, BTN_TOUCH,
-               pc110pad_data[0] & 0x01);
-       input_report_abs(pc110pad_dev, ABS_X,
-               pc110pad_data[1] | ((pc110pad_data[0] << 3) & 0x80) | ((pc110pad_data[0] << 1) & 0x100));
-       input_report_abs(pc110pad_dev, ABS_Y,
-               pc110pad_data[2] | ((pc110pad_data[0] << 4) & 0x80));
-       input_sync(pc110pad_dev);
-
-       pc110pad_count = 0;
-       return IRQ_HANDLED;
-}
-
-static void pc110pad_close(struct input_dev *dev)
-{
-       outb(PC110PAD_OFF, pc110pad_io + 2);
-}
-
-static int pc110pad_open(struct input_dev *dev)
-{
-       pc110pad_interrupt(0, NULL);
-       pc110pad_interrupt(0, NULL);
-       pc110pad_interrupt(0, NULL);
-       outb(PC110PAD_ON, pc110pad_io + 2);
-       pc110pad_count = 0;
-
-       return 0;
-}
-
-/*
- * We try to avoid enabling the hardware if it's not
- * there, but we don't know how to test. But we do know
- * that the PC110 is not a PCI system. So if we find any
- * PCI devices in the machine, we don't have a PC110.
- */
-static int __init pc110pad_init(void)
-{
-       int err;
-
-       if (!no_pci_devices())
-               return -ENODEV;
-
-       if (!request_region(pc110pad_io, 4, "pc110pad")) {
-               printk(KERN_ERR "pc110pad: I/O area %#x-%#x in use.\n",
-                               pc110pad_io, pc110pad_io + 4);
-               return -EBUSY;
-       }
-
-       outb(PC110PAD_OFF, pc110pad_io + 2);
-
-       if (request_irq(pc110pad_irq, pc110pad_interrupt, 0, "pc110pad", NULL)) {
-               printk(KERN_ERR "pc110pad: Unable to get irq %d.\n", pc110pad_irq);
-               err = -EBUSY;
-               goto err_release_region;
-       }
-
-       pc110pad_dev = input_allocate_device();
-       if (!pc110pad_dev) {
-               printk(KERN_ERR "pc110pad: Not enough memory.\n");
-               err = -ENOMEM;
-               goto err_free_irq;
-       }
-
-       pc110pad_dev->name = "IBM PC110 TouchPad";
-       pc110pad_dev->phys = "isa15e0/input0";
-       pc110pad_dev->id.bustype = BUS_ISA;
-       pc110pad_dev->id.vendor = 0x0003;
-       pc110pad_dev->id.product = 0x0001;
-       pc110pad_dev->id.version = 0x0100;
-
-       pc110pad_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
-       pc110pad_dev->absbit[0] = BIT_MASK(ABS_X) | BIT_MASK(ABS_Y);
-       pc110pad_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
-
-       input_abs_set_max(pc110pad_dev, ABS_X, 0x1ff);
-       input_abs_set_max(pc110pad_dev, ABS_Y, 0x0ff);
-
-       pc110pad_dev->open = pc110pad_open;
-       pc110pad_dev->close = pc110pad_close;
-
-       err = input_register_device(pc110pad_dev);
-       if (err)
-               goto err_free_dev;
-
-       return 0;
-
- err_free_dev:
-       input_free_device(pc110pad_dev);
- err_free_irq:
-       free_irq(pc110pad_irq, NULL);
- err_release_region:
-       release_region(pc110pad_io, 4);
-
-       return err;
-}
-
-static void __exit pc110pad_exit(void)
-{
-       outb(PC110PAD_OFF, pc110pad_io + 2);
-       free_irq(pc110pad_irq, NULL);
-       input_unregister_device(pc110pad_dev);
-       release_region(pc110pad_io, 4);
-}
-
-module_init(pc110pad_init);
-module_exit(pc110pad_exit);