From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- drivers/input/mouse/amimouse.c | 137 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 137 insertions(+) create mode 100644 drivers/input/mouse/amimouse.c (limited to 'drivers/input/mouse/amimouse.c') diff --git a/drivers/input/mouse/amimouse.c b/drivers/input/mouse/amimouse.c new file mode 100644 index 00000000000..7baa09cca7c --- /dev/null +++ b/drivers/input/mouse/amimouse.c @@ -0,0 +1,137 @@ +/* + * Amiga mouse driver for Linux/m68k + * + * Copyright (c) 2000-2002 Vojtech Pavlik + * + * Based on the work of: + * Michael Rausch James Banks + * Matther Dillon David Giller + * Nathan Laredo Linus Torvalds + * Johan Myreen Jes Sorensen + * Russell King + */ + +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation + */ + +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +MODULE_AUTHOR("Vojtech Pavlik "); +MODULE_DESCRIPTION("Amiga mouse driver"); +MODULE_LICENSE("GPL"); + +static int amimouse_used = 0; +static int amimouse_lastx, amimouse_lasty; +static struct input_dev amimouse_dev; + +static char *amimouse_name = "Amiga mouse"; +static char *amimouse_phys = "amimouse/input0"; + +static irqreturn_t amimouse_interrupt(int irq, void *dummy, struct pt_regs *fp) +{ + unsigned short joy0dat, potgor; + int nx, ny, dx, dy; + + joy0dat = custom.joy0dat; + + nx = joy0dat & 0xff; + ny = joy0dat >> 8; + + dx = nx - amimouse_lastx; + dy = ny - amimouse_lasty; + + if (dx < -127) dx = (256 + nx) - amimouse_lastx; + if (dx > 127) dx = (nx - 256) - amimouse_lastx; + if (dy < -127) dy = (256 + ny) - amimouse_lasty; + if (dy > 127) dy = (ny - 256) - amimouse_lasty; + + amimouse_lastx = nx; + amimouse_lasty = ny; + + potgor = custom.potgor; + + input_regs(&amimouse_dev, fp); + + input_report_rel(&amimouse_dev, REL_X, dx); + input_report_rel(&amimouse_dev, REL_Y, dy); + + input_report_key(&amimouse_dev, BTN_LEFT, ciaa.pra & 0x40); + input_report_key(&amimouse_dev, BTN_MIDDLE, potgor & 0x0100); + input_report_key(&amimouse_dev, BTN_RIGHT, potgor & 0x0400); + + input_sync(&amimouse_dev); + + return IRQ_HANDLED; +} + +static int amimouse_open(struct input_dev *dev) +{ + unsigned short joy0dat; + + if (amimouse_used++) + return 0; + + joy0dat = custom.joy0dat; + + amimouse_lastx = joy0dat & 0xff; + amimouse_lasty = joy0dat >> 8; + + if (request_irq(IRQ_AMIGA_VERTB, amimouse_interrupt, 0, "amimouse", amimouse_interrupt)) { + amimouse_used--; + printk(KERN_ERR "amimouse.c: Can't allocate irq %d\n", IRQ_AMIGA_VERTB); + return -EBUSY; + } + + return 0; +} + +static void amimouse_close(struct input_dev *dev) +{ + if (!--amimouse_used) + free_irq(IRQ_AMIGA_VERTB, amimouse_interrupt); +} + +static int __init amimouse_init(void) +{ + if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(AMI_MOUSE)) + return -ENODEV; + + amimouse_dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REL); + amimouse_dev.relbit[0] = BIT(REL_X) | BIT(REL_Y); + amimouse_dev.keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT); + amimouse_dev.open = amimouse_open; + amimouse_dev.close = amimouse_close; + + amimouse_dev.name = amimouse_name; + amimouse_dev.phys = amimouse_phys; + amimouse_dev.id.bustype = BUS_AMIGA; + amimouse_dev.id.vendor = 0x0001; + amimouse_dev.id.product = 0x0002; + amimouse_dev.id.version = 0x0100; + + input_register_device(&amimouse_dev); + + printk(KERN_INFO "input: %s at joy0dat\n", amimouse_name); + return 0; +} + +static void __exit amimouse_exit(void) +{ + input_unregister_device(&amimouse_dev); +} + +module_init(amimouse_init); +module_exit(amimouse_exit); -- cgit v1.2.3-18-g5258