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         if (!(input_dev = kmalloc(sizeof(struct input_dev), GFP_KERNEL)))
  45                 return -1;
  46
  47         dev->private_data = input_dev;
  48
  49         memset(input_dev, 0, sizeof(struct dc_mouse));
  50         init_input_dev(input_dev);
  51         input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
  52         input_dev->keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
  53         input_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y) | BIT(REL_WHEEL);
  54
  55         input_dev->name = dev->product_name;
  56         input_dev->id.bustype = BUS_MAPLE;
  57
  58         input_register_device(input_dev);
  59
  60         maple_getcond_callback(dev, dc_mouse_callback, 1, MAPLE_FUNC_MOUSE);
  61
  62         printk(KERN_INFO "input: mouse(0x%lx): %s\n", data, input_dev->name);
  63
  64         return 0;
  65 }
  66
  67
  68 static void dc_mouse_disconnect(struct maple_device *dev)
  69 {
  70         struct input_dev *input_dev = dev->private_data;
  71
  72         input_unregister_device(input_dev);
  73         kfree(input_dev);
  74 }
  75
  76
  77 static struct maple_driver dc_mouse_driver = {
  78         .function =     MAPLE_FUNC_MOUSE,
  79         .name =         "Dreamcast mouse",
  80         .connect =      dc_mouse_connect,
  81         .disconnect =   dc_mouse_disconnect,
  82 };
  83
  84
  85 static int __init dc_mouse_init(void)
  86 {
  87         maple_register_driver(&dc_mouse_driver);
  88         return 0;
  89 }
  90
  91
  92 static void __exit dc_mouse_exit(void)
  93 {
  94         maple_unregister_driver(&dc_mouse_driver);
  95 }
  96
  97
  98 module_init(dc_mouse_init);
  99 module_exit(dc_mouse_exit);
 100
 101 /*
 102  * Local variables:
 103  * c-basic-offset: 8
 104  * End:
 105  */