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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146// SPDX-License-Identifier: GPL-2.0-only/* * SEGA Dreamcast mouse driver * Based on drivers/usb/usbmouse.c * * Copyright (c) Yaegashi Takeshi, 2001 * Copyright (c) Adrian McMenamin, 2008 - 2009 */
#include <linux/kernel.h>#include <linux/slab.h>#include <linux/input.h>#include <linux/module.h>#include <linux/init.h>#include <linux/timer.h>#include <linux/maple.h>
MODULE_AUTHOR("Adrian McMenamin <adrian@mcmen.demon.co.uk>");MODULE_DESCRIPTION("SEGA Dreamcast mouse driver");MODULE_LICENSE("GPL");
struct dc_mouse { struct input_dev *dev; struct maple_device *mdev;};
static void dc_mouse_callback(struct mapleq *mq){ int buttons, relx, rely, relz; struct maple_device *mapledev = mq->dev; struct dc_mouse *mse = maple_get_drvdata(mapledev); struct input_dev *dev = mse->dev; unsigned char *res = mq->recvbuf->buf;
buttons = ~res[8]; relx = *(unsigned short *)(res + 12) - 512; rely = *(unsigned short *)(res + 14) - 512; relz = *(unsigned short *)(res + 16) - 512;
input_report_key(dev, BTN_LEFT, buttons & 4); input_report_key(dev, BTN_MIDDLE, buttons & 9); input_report_key(dev, BTN_RIGHT, buttons & 2); input_report_rel(dev, REL_X, relx); input_report_rel(dev, REL_Y, rely); input_report_rel(dev, REL_WHEEL, relz); input_sync(dev);}
static int dc_mouse_open(struct input_dev *dev){ struct dc_mouse *mse = input_get_drvdata(dev);
maple_getcond_callback(mse->mdev, dc_mouse_callback, HZ/50, MAPLE_FUNC_MOUSE);
return 0;}
static void dc_mouse_close(struct input_dev *dev){ struct dc_mouse *mse = input_get_drvdata(dev);
maple_getcond_callback(mse->mdev, NULL, 0, MAPLE_FUNC_MOUSE);}
/* allow the mouse to be used */static int probe_maple_mouse(struct device *dev){ struct maple_device *mdev = to_maple_dev(dev); int error; struct input_dev *input_dev; struct dc_mouse *mse;
mse = kzalloc_obj(*mse); if (!mse) { error = -ENOMEM; goto fail; }
input_dev = input_allocate_device(); if (!input_dev) { error = -ENOMEM; goto fail_nomem; }
mse->dev = input_dev; mse->mdev = mdev;
maple_set_drvdata(mdev, mse);
input_set_drvdata(input_dev, mse); input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE); input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y) | BIT_MASK(REL_WHEEL); input_dev->open = dc_mouse_open; input_dev->close = dc_mouse_close; input_dev->name = mdev->product_name; input_dev->id.bustype = BUS_HOST; error = input_register_device(input_dev); if (error) goto fail_register; return error;
fail_register: input_free_device(input_dev);fail_nomem: kfree(mse);fail: return error;}
static int remove_maple_mouse(struct device *dev){ struct maple_device *mdev = to_maple_dev(dev); struct dc_mouse *mse = maple_get_drvdata(mdev);
input_unregister_device(mse->dev); kfree(mse);
return 0;}
static struct maple_driver dc_mouse_driver = { .function = MAPLE_FUNC_MOUSE, .drv = { .name = "Dreamcast_mouse", .probe = probe_maple_mouse, .remove = remove_maple_mouse, },};
static int __init dc_mouse_init(void){ return maple_driver_register(&dc_mouse_driver);}
static void __exit dc_mouse_exit(void){ maple_driver_unregister(&dc_mouse_driver);}
module_init(dc_mouse_init);module_exit(dc_mouse_exit);