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Viewing changes to drivers/input/mouse/maplemouse.c

  • Committer: Package Import Robot
  • Author(s): Alessio Igor Bogani
  • Date: 2011-10-26 11:13:05 UTC
  • Revision ID: package-import@ubuntu.com-20111026111305-tz023xykf0i6eosh
Tags: upstream-3.2.0
Import upstream version 3.2.0

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drivers/input/mouse/maplemouse.c
 
1
/*
 
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 *      SEGA Dreamcast mouse driver
 
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 *      Based on drivers/usb/usbmouse.c
 
4
 *
 
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 *      Copyright (c) Yaegashi Takeshi, 2001
 
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 *      Copyright (c) Adrian McMenamin, 2008 - 2009
 
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 */
 
8
 
 
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#include <linux/kernel.h>
 
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#include <linux/slab.h>
 
11
#include <linux/input.h>
 
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#include <linux/module.h>
 
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#include <linux/init.h>
 
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#include <linux/timer.h>
 
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#include <linux/maple.h>
 
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MODULE_AUTHOR("Adrian McMenamin <adrian@mcmen.demon.co.uk>");
 
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MODULE_DESCRIPTION("SEGA Dreamcast mouse driver");
 
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MODULE_LICENSE("GPL");
 
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struct dc_mouse {
 
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        struct input_dev *dev;
 
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        struct maple_device *mdev;
 
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};
 
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static void dc_mouse_callback(struct mapleq *mq)
 
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{
 
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        int buttons, relx, rely, relz;
 
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        struct maple_device *mapledev = mq->dev;
 
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        struct dc_mouse *mse = maple_get_drvdata(mapledev);
 
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        struct input_dev *dev = mse->dev;
 
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        unsigned char *res = mq->recvbuf->buf;
 
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        buttons = ~res[8];
 
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        relx = *(unsigned short *)(res + 12) - 512;
 
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        rely = *(unsigned short *)(res + 14) - 512;
 
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        relz = *(unsigned short *)(res + 16) - 512;
 
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        input_report_key(dev, BTN_LEFT,   buttons & 4);
 
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        input_report_key(dev, BTN_MIDDLE, buttons & 9);
 
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        input_report_key(dev, BTN_RIGHT,  buttons & 2);
 
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        input_report_rel(dev, REL_X,      relx);
 
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        input_report_rel(dev, REL_Y,      rely);
 
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        input_report_rel(dev, REL_WHEEL,  relz);
 
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        input_sync(dev);
 
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}
 
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static int dc_mouse_open(struct input_dev *dev)
 
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{
 
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        struct dc_mouse *mse = maple_get_drvdata(to_maple_dev(&dev->dev));
 
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        maple_getcond_callback(mse->mdev, dc_mouse_callback, HZ/50,
 
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                MAPLE_FUNC_MOUSE);
 
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        return 0;
 
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}
 
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static void dc_mouse_close(struct input_dev *dev)
 
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{
 
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        struct dc_mouse *mse = maple_get_drvdata(to_maple_dev(&dev->dev));
 
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        maple_getcond_callback(mse->mdev, dc_mouse_callback, 0,
 
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                MAPLE_FUNC_MOUSE);
 
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}
 
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/* allow the mouse to be used */
 
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static int __devinit probe_maple_mouse(struct device *dev)
 
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{
 
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        struct maple_device *mdev = to_maple_dev(dev);
 
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        struct maple_driver *mdrv = to_maple_driver(dev->driver);
 
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        int error;
 
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        struct input_dev *input_dev;
 
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        struct dc_mouse *mse;
 
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        mse = kzalloc(sizeof(struct dc_mouse), GFP_KERNEL);
 
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        if (!mse) {
 
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                error = -ENOMEM;
 
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                goto fail;
 
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        }
 
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        input_dev = input_allocate_device();
 
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        if (!input_dev) {
 
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                error = -ENOMEM;
 
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                goto fail_nomem;
 
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        }
 
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        mse->dev = input_dev;
 
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        mse->mdev = mdev;
 
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        input_set_drvdata(input_dev, mse);
 
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        input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
 
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        input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
 
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                BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE);
 
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        input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y) |
 
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                BIT_MASK(REL_WHEEL);
 
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        input_dev->open = dc_mouse_open;
 
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        input_dev->close = dc_mouse_close;
 
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        input_dev->name = mdev->product_name;
 
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        input_dev->id.bustype = BUS_HOST;
 
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        error = input_register_device(input_dev);
 
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        if (error)
 
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                goto fail_register;
 
103
 
 
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        mdev->driver = mdrv;
 
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        maple_set_drvdata(mdev, mse);
 
106
 
 
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        return error;
 
108
 
 
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fail_register:
 
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        input_free_device(input_dev);
 
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fail_nomem:
 
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        kfree(mse);
 
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fail:
 
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        return error;
 
115
}
 
116
 
 
117
static int __devexit remove_maple_mouse(struct device *dev)
 
118
{
 
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        struct maple_device *mdev = to_maple_dev(dev);
 
120
        struct dc_mouse *mse = maple_get_drvdata(mdev);
 
121
 
 
122
        mdev->callback = NULL;
 
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        input_unregister_device(mse->dev);
 
124
        maple_set_drvdata(mdev, NULL);
 
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        kfree(mse);
 
126
 
 
127
        return 0;
 
128
}
 
129
 
 
130
static struct maple_driver dc_mouse_driver = {
 
131
        .function =     MAPLE_FUNC_MOUSE,
 
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        .drv = {
 
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                .name = "Dreamcast_mouse",
 
134
                .probe = probe_maple_mouse,
 
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                .remove = __devexit_p(remove_maple_mouse),
 
136
        },
 
137
};
 
138
 
 
139
static int __init dc_mouse_init(void)
 
140
{
 
141
        return maple_driver_register(&dc_mouse_driver);
 
142
}
 
143
 
 
144
static void __exit dc_mouse_exit(void)
 
145
{
 
146
        maple_driver_unregister(&dc_mouse_driver);
 
147
}
 
148
 
 
149
module_init(dc_mouse_init);
 
150
module_exit(dc_mouse_exit);