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145 lines
3.1 KiB
145 lines
3.1 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Amiga mouse driver for Linux/m68k |
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* |
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* Copyright (c) 2000-2002 Vojtech Pavlik |
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* |
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* Based on the work of: |
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* Michael Rausch James Banks |
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* Matther Dillon David Giller |
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* Nathan Laredo Linus Torvalds |
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* Johan Myreen Jes Sorensen |
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* Russell King |
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*/ |
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#include <linux/module.h> |
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#include <linux/init.h> |
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#include <linux/input.h> |
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#include <linux/interrupt.h> |
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#include <linux/platform_device.h> |
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#include <asm/irq.h> |
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#include <asm/setup.h> |
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#include <linux/uaccess.h> |
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#include <asm/amigahw.h> |
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#include <asm/amigaints.h> |
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MODULE_AUTHOR("Vojtech Pavlik <[email protected]>"); |
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MODULE_DESCRIPTION("Amiga mouse driver"); |
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MODULE_LICENSE("GPL"); |
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static int amimouse_lastx, amimouse_lasty; |
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static irqreturn_t amimouse_interrupt(int irq, void *data) |
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{ |
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struct input_dev *dev = data; |
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unsigned short joy0dat, potgor; |
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int nx, ny, dx, dy; |
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joy0dat = amiga_custom.joy0dat; |
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nx = joy0dat & 0xff; |
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ny = joy0dat >> 8; |
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dx = nx - amimouse_lastx; |
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dy = ny - amimouse_lasty; |
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if (dx < -127) dx = (256 + nx) - amimouse_lastx; |
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if (dx > 127) dx = (nx - 256) - amimouse_lastx; |
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if (dy < -127) dy = (256 + ny) - amimouse_lasty; |
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if (dy > 127) dy = (ny - 256) - amimouse_lasty; |
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amimouse_lastx = nx; |
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amimouse_lasty = ny; |
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potgor = amiga_custom.potgor; |
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input_report_rel(dev, REL_X, dx); |
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input_report_rel(dev, REL_Y, dy); |
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input_report_key(dev, BTN_LEFT, ciaa.pra & 0x40); |
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input_report_key(dev, BTN_MIDDLE, potgor & 0x0100); |
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input_report_key(dev, BTN_RIGHT, potgor & 0x0400); |
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input_sync(dev); |
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return IRQ_HANDLED; |
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} |
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static int amimouse_open(struct input_dev *dev) |
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{ |
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unsigned short joy0dat; |
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int error; |
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joy0dat = amiga_custom.joy0dat; |
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amimouse_lastx = joy0dat & 0xff; |
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amimouse_lasty = joy0dat >> 8; |
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error = request_irq(IRQ_AMIGA_VERTB, amimouse_interrupt, 0, "amimouse", |
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dev); |
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if (error) |
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dev_err(&dev->dev, "Can't allocate irq %d\n", IRQ_AMIGA_VERTB); |
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return error; |
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} |
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static void amimouse_close(struct input_dev *dev) |
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{ |
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free_irq(IRQ_AMIGA_VERTB, dev); |
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} |
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static int __init amimouse_probe(struct platform_device *pdev) |
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{ |
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int err; |
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struct input_dev *dev; |
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dev = input_allocate_device(); |
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if (!dev) |
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return -ENOMEM; |
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dev->name = pdev->name; |
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dev->phys = "amimouse/input0"; |
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dev->id.bustype = BUS_AMIGA; |
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dev->id.vendor = 0x0001; |
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dev->id.product = 0x0002; |
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dev->id.version = 0x0100; |
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dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); |
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dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); |
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dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) | |
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BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); |
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dev->open = amimouse_open; |
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dev->close = amimouse_close; |
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dev->dev.parent = &pdev->dev; |
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err = input_register_device(dev); |
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if (err) { |
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input_free_device(dev); |
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return err; |
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} |
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platform_set_drvdata(pdev, dev); |
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return 0; |
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} |
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static int __exit amimouse_remove(struct platform_device *pdev) |
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{ |
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struct input_dev *dev = platform_get_drvdata(pdev); |
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input_unregister_device(dev); |
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return 0; |
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} |
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static struct platform_driver amimouse_driver = { |
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.remove = __exit_p(amimouse_remove), |
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.driver = { |
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.name = "amiga-mouse", |
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}, |
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}; |
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module_platform_driver_probe(amimouse_driver, amimouse_probe); |
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MODULE_ALIAS("platform:amiga-mouse");
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