drivers/input/mouse/maplemouse.c

   1 /*
   2  *      $Id: maplemouse.c,v 1.2 2004/03/22 01:18:15 lethal Exp $
   3  *      SEGA Dreamcast mouse driver
   4  *      Based on drivers/usb/usbmouse.c
   5  */
   6
   7 #include <linux/kernel.h>
   8 #include <linux/slab.h>
   9 #include <linux/input.h>
  10 #include <linux/module.h>
  11 #include <linux/init.h>
  12 #include <linux/timer.h>
  13 #include <linux/maple.h>
  14
  15 MODULE_AUTHOR("YAEGASHI Takeshi <t@keshi.org>");
  16 MODULE_DESCRIPTION("SEGA Dreamcast mouse driver");
  17
  18 static void dc_mouse_callback(struct mapleq *mq)
  19 {
  20         int buttons, relx, rely, relz;
  21         struct maple_device *mapledev = mq->dev;
  22         struct input_dev *dev = mapledev->private_data;
  23         unsigned char *res = mq->recvbuf;
  24
  25         buttons = ~res[8];
  26         relx = *(unsigned short *)(res + 12) - 512;
  27         rely = *(unsigned short *)(res + 14) - 512;
  28         relz = *(unsigned short *)(res + 16) - 512;
  29
  30         input_report_key(dev, BTN_LEFT,   buttons & 4);
  31         input_report_key(dev, BTN_MIDDLE, buttons & 9);
  32         input_report_key(dev, BTN_RIGHT,  buttons & 2);
  33         input_report_rel(dev, REL_X,      relx);
  34         input_report_rel(dev, REL_Y,      rely);
  35         input_report_rel(dev, REL_WHEEL,  relz);
  36         input_sync(dev);
  37 }
  38
  39 static int dc_mouse_connect(struct maple_device *dev)
  40 {
  41         unsigned long data = be32_to_cpu(dev->devinfo.function_data[0]);
  42         struct input_dev *input_dev;
  43
  44         dev->private_data = input_dev = input_allocate_device();
  45         if (!input_dev)
  46                 return -ENOMEM;
  47
  48         dev->private_data = input_dev;
  49
  50         input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
  51         input_dev->keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
  52         input_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y) | BIT(REL_WHEEL);
  53
  54         input_dev->name = dev->product_name;
  55         input_dev->id.bustype = BUS_MAPLE;
  56
  57         input_register_device(input_dev);
  58
  59         maple_getcond_callback(dev, dc_mouse_callback, 1, MAPLE_FUNC_MOUSE);
  60
  61         return 0;
  62 }
  63
  64
  65 static void dc_mouse_disconnect(struct maple_device *dev)
  66 {
  67         struct input_dev *input_dev = dev->private_data;
  68
  69         input_unregister_device(input_dev);
  70 }
  71
  72
  73 static struct maple_driver dc_mouse_driver = {
  74         .function =     MAPLE_FUNC_MOUSE,
  75         .name =         "Dreamcast mouse",
  76         .connect =      dc_mouse_connect,
  77         .disconnect =   dc_mouse_disconnect,
  78 };
  79
  80
  81 static int __init dc_mouse_init(void)
  82 {
  83         maple_register_driver(&dc_mouse_driver);
  84         return 0;
  85 }
  86
  87
  88 static void __exit dc_mouse_exit(void)
  89 {
  90         maple_unregister_driver(&dc_mouse_driver);
  91 }
  92
  93
  94 module_init(dc_mouse_init);
  95 module_exit(dc_mouse_exit);
  96
  97 /*
  98  * Local variables:
  99  * c-basic-offset: 8
 100  * End:
 101  */