cregit-Linux how code gets into the kernel

Release 4.11 drivers/input/mouse/maplemouse.c

/*
 *      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); }

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Adrian McMenamin180100.00%2100.00%
Total180100.00%2100.00%


static int dc_mouse_open(struct input_dev *dev) { struct dc_mouse *mse = maple_get_drvdata(to_maple_dev(&dev->dev)); maple_getcond_callback(mse->mdev, dc_mouse_callback, HZ/50, MAPLE_FUNC_MOUSE); return 0; }

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PersonTokensPropCommitsCommitProp
Adrian McMenamin45100.00%2100.00%
Total45100.00%2100.00%


static void dc_mouse_close(struct input_dev *dev) { struct dc_mouse *mse = maple_get_drvdata(to_maple_dev(&dev->dev)); maple_getcond_callback(mse->mdev, dc_mouse_callback, 0, MAPLE_FUNC_MOUSE); }

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Adrian McMenamin40100.00%2100.00%
Total40100.00%2100.00%

/* allow the mouse to be used */
static int probe_maple_mouse(struct device *dev) { struct maple_device *mdev = to_maple_dev(dev); struct maple_driver *mdrv = to_maple_driver(dev->driver); int error; struct input_dev *input_dev; struct dc_mouse *mse; mse = kzalloc(sizeof(struct dc_mouse), GFP_KERNEL); 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; 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; mdev->driver = mdrv; maple_set_drvdata(mdev, mse); return error; fail_register: input_free_device(input_dev); fail_nomem: kfree(mse); fail: return error; }

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Adrian McMenamin247100.00%2100.00%
Total247100.00%2100.00%


static int remove_maple_mouse(struct device *dev) { struct maple_device *mdev = to_maple_dev(dev); struct dc_mouse *mse = maple_get_drvdata(mdev); mdev->callback = NULL; input_unregister_device(mse->dev); maple_set_drvdata(mdev, NULL); kfree(mse); return 0; }

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Adrian McMenamin59100.00%1100.00%
Total59100.00%1100.00%

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); }

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Adrian McMenamin16100.00%1100.00%
Total16100.00%1100.00%


static void __exit dc_mouse_exit(void) { maple_driver_unregister(&dc_mouse_driver); }

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Adrian McMenamin15100.00%1100.00%
Total15100.00%1100.00%

module_init(dc_mouse_init); module_exit(dc_mouse_exit);

Overall Contributors

PersonTokensPropCommitsCommitProp
Adrian McMenamin697100.00%2100.00%
Total697100.00%2100.00%
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