tjh.dev / kernel
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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

authored by

Dmitry Torokhov and committed by
Bjorn Helgaas 6f468ea3 d3e996a5

-171
-10
drivers/input/mouse/Kconfig
··· 326 326 To compile this driver as a module, choose M here: the 327 327 module will be called logibm. 328 328 329 - config MOUSE_PC110PAD 330 - tristate "IBM PC110 touchpad" 331 - depends on ISA 332 - help 333 - Say Y if you have the IBM PC-110 micro-notebook and want its 334 - touchpad supported. 335 - 336 - To compile this driver as a module, choose M here: the 337 - module will be called pc110pad. 338 - 339 329 config MOUSE_AMIGA 340 330 tristate "Amiga mouse" 341 331 depends on AMIGA
-1
drivers/input/mouse/Makefile
··· 15 15 obj-$(CONFIG_MOUSE_INPORT) += inport.o 16 16 obj-$(CONFIG_MOUSE_LOGIBM) += logibm.o 17 17 obj-$(CONFIG_MOUSE_MAPLE) += maplemouse.o 18 - obj-$(CONFIG_MOUSE_PC110PAD) += pc110pad.o 19 18 obj-$(CONFIG_MOUSE_PS2) += psmouse.o 20 19 obj-$(CONFIG_MOUSE_RISCPC) += rpcmouse.o 21 20 obj-$(CONFIG_MOUSE_SERIAL) += sermouse.o
-160
drivers/input/mouse/pc110pad.c
··· 1 - // SPDX-License-Identifier: GPL-2.0-or-later 2 - /* 3 - * Copyright (c) 2000-2001 Vojtech Pavlik 4 - * 5 - * Based on the work of: 6 - * Alan Cox Robin O'Leary 7 - */ 8 - 9 - /* 10 - * IBM PC110 touchpad driver for Linux 11 - */ 12 - 13 - #include <linux/module.h> 14 - #include <linux/kernel.h> 15 - #include <linux/errno.h> 16 - #include <linux/ioport.h> 17 - #include <linux/input.h> 18 - #include <linux/init.h> 19 - #include <linux/interrupt.h> 20 - #include <linux/pci.h> 21 - #include <linux/delay.h> 22 - 23 - #include <asm/io.h> 24 - #include <asm/irq.h> 25 - 26 - MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 27 - MODULE_DESCRIPTION("IBM PC110 touchpad driver"); 28 - MODULE_LICENSE("GPL"); 29 - 30 - #define PC110PAD_OFF 0x30 31 - #define PC110PAD_ON 0x38 32 - 33 - static int pc110pad_irq = 10; 34 - static int pc110pad_io = 0x15e0; 35 - 36 - static struct input_dev *pc110pad_dev; 37 - static int pc110pad_data[3]; 38 - static int pc110pad_count; 39 - 40 - static irqreturn_t pc110pad_interrupt(int irq, void *ptr) 41 - { 42 - int value = inb_p(pc110pad_io); 43 - int handshake = inb_p(pc110pad_io + 2); 44 - 45 - outb(handshake | 1, pc110pad_io + 2); 46 - udelay(2); 47 - outb(handshake & ~1, pc110pad_io + 2); 48 - udelay(2); 49 - inb_p(0x64); 50 - 51 - pc110pad_data[pc110pad_count++] = value; 52 - 53 - if (pc110pad_count < 3) 54 - return IRQ_HANDLED; 55 - 56 - input_report_key(pc110pad_dev, BTN_TOUCH, 57 - pc110pad_data[0] & 0x01); 58 - input_report_abs(pc110pad_dev, ABS_X, 59 - pc110pad_data[1] | ((pc110pad_data[0] << 3) & 0x80) | ((pc110pad_data[0] << 1) & 0x100)); 60 - input_report_abs(pc110pad_dev, ABS_Y, 61 - pc110pad_data[2] | ((pc110pad_data[0] << 4) & 0x80)); 62 - input_sync(pc110pad_dev); 63 - 64 - pc110pad_count = 0; 65 - return IRQ_HANDLED; 66 - } 67 - 68 - static void pc110pad_close(struct input_dev *dev) 69 - { 70 - outb(PC110PAD_OFF, pc110pad_io + 2); 71 - } 72 - 73 - static int pc110pad_open(struct input_dev *dev) 74 - { 75 - pc110pad_interrupt(0, NULL); 76 - pc110pad_interrupt(0, NULL); 77 - pc110pad_interrupt(0, NULL); 78 - outb(PC110PAD_ON, pc110pad_io + 2); 79 - pc110pad_count = 0; 80 - 81 - return 0; 82 - } 83 - 84 - /* 85 - * We try to avoid enabling the hardware if it's not 86 - * there, but we don't know how to test. But we do know 87 - * that the PC110 is not a PCI system. So if we find any 88 - * PCI devices in the machine, we don't have a PC110. 89 - */ 90 - static int __init pc110pad_init(void) 91 - { 92 - int err; 93 - 94 - if (!no_pci_devices()) 95 - return -ENODEV; 96 - 97 - if (!request_region(pc110pad_io, 4, "pc110pad")) { 98 - printk(KERN_ERR "pc110pad: I/O area %#x-%#x in use.\n", 99 - pc110pad_io, pc110pad_io + 4); 100 - return -EBUSY; 101 - } 102 - 103 - outb(PC110PAD_OFF, pc110pad_io + 2); 104 - 105 - if (request_irq(pc110pad_irq, pc110pad_interrupt, 0, "pc110pad", NULL)) { 106 - printk(KERN_ERR "pc110pad: Unable to get irq %d.\n", pc110pad_irq); 107 - err = -EBUSY; 108 - goto err_release_region; 109 - } 110 - 111 - pc110pad_dev = input_allocate_device(); 112 - if (!pc110pad_dev) { 113 - printk(KERN_ERR "pc110pad: Not enough memory.\n"); 114 - err = -ENOMEM; 115 - goto err_free_irq; 116 - } 117 - 118 - pc110pad_dev->name = "IBM PC110 TouchPad"; 119 - pc110pad_dev->phys = "isa15e0/input0"; 120 - pc110pad_dev->id.bustype = BUS_ISA; 121 - pc110pad_dev->id.vendor = 0x0003; 122 - pc110pad_dev->id.product = 0x0001; 123 - pc110pad_dev->id.version = 0x0100; 124 - 125 - pc110pad_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); 126 - pc110pad_dev->absbit[0] = BIT_MASK(ABS_X) | BIT_MASK(ABS_Y); 127 - pc110pad_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); 128 - 129 - input_abs_set_max(pc110pad_dev, ABS_X, 0x1ff); 130 - input_abs_set_max(pc110pad_dev, ABS_Y, 0x0ff); 131 - 132 - pc110pad_dev->open = pc110pad_open; 133 - pc110pad_dev->close = pc110pad_close; 134 - 135 - err = input_register_device(pc110pad_dev); 136 - if (err) 137 - goto err_free_dev; 138 - 139 - return 0; 140 - 141 - err_free_dev: 142 - input_free_device(pc110pad_dev); 143 - err_free_irq: 144 - free_irq(pc110pad_irq, NULL); 145 - err_release_region: 146 - release_region(pc110pad_io, 4); 147 - 148 - return err; 149 - } 150 - 151 - static void __exit pc110pad_exit(void) 152 - { 153 - outb(PC110PAD_OFF, pc110pad_io + 2); 154 - free_irq(pc110pad_irq, NULL); 155 - input_unregister_device(pc110pad_dev); 156 - release_region(pc110pad_io, 4); 157 - } 158 - 159 - module_init(pc110pad_init); 160 - module_exit(pc110pad_exit);