diff options
Diffstat (limited to 'drivers/input/mouse/inport.c')
| -rw-r--r-- | drivers/input/mouse/inport.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/drivers/input/mouse/inport.c b/drivers/input/mouse/inport.c new file mode 100644 index 000000000..401d8bff8 --- /dev/null +++ b/drivers/input/mouse/inport.c @@ -0,0 +1,177 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) 1999-2001 Vojtech Pavlik + * + * Based on the work of: + * Teemu Rantanen Derrick Cole + * Peter Cervasio Christoph Niemann + * Philip Blundell Russell King + * Bob Harris + */ + +/* + * Inport (ATI XL and Microsoft) busmouse driver for Linux + */ + +#include <linux/module.h> +#include <linux/ioport.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/input.h> + +#include <asm/io.h> +#include <asm/irq.h> + +MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); +MODULE_DESCRIPTION("Inport (ATI XL and Microsoft) busmouse driver"); +MODULE_LICENSE("GPL"); + +#define INPORT_BASE 0x23c +#define INPORT_EXTENT 4 + +#define INPORT_CONTROL_PORT INPORT_BASE + 0 +#define INPORT_DATA_PORT INPORT_BASE + 1 +#define INPORT_SIGNATURE_PORT INPORT_BASE + 2 + +#define INPORT_REG_BTNS 0x00 +#define INPORT_REG_X 0x01 +#define INPORT_REG_Y 0x02 +#define INPORT_REG_MODE 0x07 +#define INPORT_RESET 0x80 + +#ifdef CONFIG_MOUSE_ATIXL +#define INPORT_NAME "ATI XL Mouse" +#define INPORT_VENDOR 0x0002 +#define INPORT_SPEED_30HZ 0x01 +#define INPORT_SPEED_50HZ 0x02 +#define INPORT_SPEED_100HZ 0x03 +#define INPORT_SPEED_200HZ 0x04 +#define INPORT_MODE_BASE INPORT_SPEED_100HZ +#define INPORT_MODE_IRQ 0x08 +#else +#define INPORT_NAME "Microsoft InPort Mouse" +#define INPORT_VENDOR 0x0001 +#define INPORT_MODE_BASE 0x10 +#define INPORT_MODE_IRQ 0x01 +#endif +#define INPORT_MODE_HOLD 0x20 + +#define INPORT_IRQ 5 + +static int inport_irq = INPORT_IRQ; +module_param_hw_named(irq, inport_irq, uint, irq, 0); +MODULE_PARM_DESC(irq, "IRQ number (5=default)"); + +static struct input_dev *inport_dev; + +static irqreturn_t inport_interrupt(int irq, void *dev_id) +{ + unsigned char buttons; + + outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); + outb(INPORT_MODE_HOLD | INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT); + + outb(INPORT_REG_X, INPORT_CONTROL_PORT); + input_report_rel(inport_dev, REL_X, inb(INPORT_DATA_PORT)); + + outb(INPORT_REG_Y, INPORT_CONTROL_PORT); + input_report_rel(inport_dev, REL_Y, inb(INPORT_DATA_PORT)); + + outb(INPORT_REG_BTNS, INPORT_CONTROL_PORT); + buttons = inb(INPORT_DATA_PORT); + + input_report_key(inport_dev, BTN_MIDDLE, buttons & 1); + input_report_key(inport_dev, BTN_LEFT, buttons & 2); + input_report_key(inport_dev, BTN_RIGHT, buttons & 4); + + outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); + outb(INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT); + + input_sync(inport_dev); + return IRQ_HANDLED; +} + +static int inport_open(struct input_dev *dev) +{ + if (request_irq(inport_irq, inport_interrupt, 0, "inport", NULL)) + return -EBUSY; + outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); + outb(INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT); + + return 0; +} + +static void inport_close(struct input_dev *dev) +{ + outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); + outb(INPORT_MODE_BASE, INPORT_DATA_PORT); + free_irq(inport_irq, NULL); +} + +static int __init inport_init(void) +{ + unsigned char a, b, c; + int err; + + if (!request_region(INPORT_BASE, INPORT_EXTENT, "inport")) { + printk(KERN_ERR "inport.c: Can't allocate ports at %#x\n", INPORT_BASE); + return -EBUSY; + } + + a = inb(INPORT_SIGNATURE_PORT); + b = inb(INPORT_SIGNATURE_PORT); + c = inb(INPORT_SIGNATURE_PORT); + if (a == b || a != c) { + printk(KERN_INFO "inport.c: Didn't find InPort mouse at %#x\n", INPORT_BASE); + err = -ENODEV; + goto err_release_region; + } + + inport_dev = input_allocate_device(); + if (!inport_dev) { + printk(KERN_ERR "inport.c: Not enough memory for input device\n"); + err = -ENOMEM; + goto err_release_region; + } + + inport_dev->name = INPORT_NAME; + inport_dev->phys = "isa023c/input0"; + inport_dev->id.bustype = BUS_ISA; + inport_dev->id.vendor = INPORT_VENDOR; + inport_dev->id.product = 0x0001; + inport_dev->id.version = 0x0100; + + inport_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); + inport_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) | + BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); + inport_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); + + inport_dev->open = inport_open; + inport_dev->close = inport_close; + + outb(INPORT_RESET, INPORT_CONTROL_PORT); + outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); + outb(INPORT_MODE_BASE, INPORT_DATA_PORT); + + err = input_register_device(inport_dev); + if (err) + goto err_free_dev; + + return 0; + + err_free_dev: + input_free_device(inport_dev); + err_release_region: + release_region(INPORT_BASE, INPORT_EXTENT); + + return err; +} + +static void __exit inport_exit(void) +{ + input_unregister_device(inport_dev); + release_region(INPORT_BASE, INPORT_EXTENT); +} + +module_init(inport_init); +module_exit(inport_exit); |