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 struct dc_mouse {
  19         struct input_dev dev;
  20         int open;
  21 };
  22
  23
  24 static void dc_mouse_callback(struct mapleq *mq)
  25 {
  26         int buttons, relx, rely, relz;
  27         struct maple_device *mapledev = mq->dev;
  28         struct dc_mouse *mouse = mapledev->private_data;
  29         struct input_dev *dev = &mouse->dev;
  30         unsigned char *res = mq->recvbuf;
  31
  32         buttons = ~res[8];
  33         relx=*(unsigned short *)(res+12)-512;
  34         rely=*(unsigned short *)(res+14)-512;
  35         relz=*(unsigned short *)(res+16)-512;
  36
  37         input_report_key(dev, BTN_LEFT,   buttons&4);
  38         input_report_key(dev, BTN_MIDDLE, buttons&9);
  39         input_report_key(dev, BTN_RIGHT,  buttons&2);
  40         input_report_rel(dev, REL_X,      relx);
  41         input_report_rel(dev, REL_Y,      rely);
  42         input_report_rel(dev, REL_WHEEL,  relz);
  43         input_sync(dev);
  44 }
  45
  46
  47 static int dc_mouse_open(struct input_dev *dev)
  48 {
  49         struct dc_mouse *mouse = dev->private;
  50         mouse->open++;
  51         return 0;
  52 }
  53
  54
  55 static void dc_mouse_close(struct input_dev *dev)
  56 {
  57         struct dc_mouse *mouse = dev->private;
  58         mouse->open--;
  59 }
  60
  61
  62 static int dc_mouse_connect(struct maple_device *dev)
  63 {
  64         unsigned long data = be32_to_cpu(dev->devinfo.function_data[0]);
  65         struct dc_mouse *mouse;
  66
  67         if (!(mouse = kmalloc(sizeof(struct dc_mouse), GFP_KERNEL)))
  68                 return -1;
  69         memset(mouse, 0, sizeof(struct dc_mouse));
  70
  71         dev->private_data = mouse;
  72
  73         mouse->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
  74         mouse->dev.keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
  75         mouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y) | BIT(REL_WHEEL);
  76
  77         init_input_dev(&mouse->dev);
  78
  79         mouse->dev.private = mouse;
  80         mouse->dev.open = dc_mouse_open;
  81         mouse->dev.close = dc_mouse_close;
  82         mouse->dev.event = NULL;
  83
  84         mouse->dev.name = dev->product_name;
  85         mouse->dev.id.bustype = BUS_MAPLE;
  86
  87         input_register_device(&mouse->dev);
  88
  89         maple_getcond_callback(dev, dc_mouse_callback, 1, MAPLE_FUNC_MOUSE);
  90
  91         printk(KERN_INFO "input: mouse(0x%lx): %s\n", data, mouse->dev.name);
  92
  93         return 0;
  94 }
  95
  96
  97 static void dc_mouse_disconnect(struct maple_device *dev)
  98 {
  99         struct dc_mouse *mouse = dev->private_data;
 100
 101         input_unregister_device(&mouse->dev);
 102         kfree(mouse);
 103 }
 104
 105
 106 static struct maple_driver dc_mouse_driver = {
 107         .function =     MAPLE_FUNC_MOUSE,
 108         .name =         "Dreamcast mouse",
 109         .connect =      dc_mouse_connect,
 110         .disconnect =   dc_mouse_disconnect,
 111 };
 112
 113
 114 static int __init dc_mouse_init(void)
 115 {
 116         maple_register_driver(&dc_mouse_driver);
 117         return 0;
 118 }
 119
 120
 121 static void __exit dc_mouse_exit(void)
 122 {
 123         maple_unregister_driver(&dc_mouse_driver);
 124 }
 125
 126
 127 module_init(dc_mouse_init);
 128 module_exit(dc_mouse_exit);
 129
 130 /*
 131  * Local variables:
 132  * c-basic-offset: 8
 133  * End:
 134  */