drivers/input/keyboard/maple_keyb.c

   1 /*
   2  *      $Id: maple_keyb.c,v 1.4 2004/03/22 01:18:15 lethal Exp $
   3  *      SEGA Dreamcast keyboard driver
   4  *      Based on drivers/usb/usbkbd.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 keyboard driver");
  17 MODULE_LICENSE("GPL");
  18
  19 static unsigned char dc_kbd_keycode[256] = {
  20           0,  0,  0,  0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
  21          50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44,  2,  3,
  22           4,  5,  6,  7,  8,  9, 10, 11, 28,  1, 14, 15, 57, 12, 13, 26,
  23          27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
  24          65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
  25         105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
  26          72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
  27         191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
  28         115,114,  0,  0,  0,121,  0, 89, 93,124, 92, 94, 95,  0,  0,  0,
  29         122,123, 90, 91, 85,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
  30           0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
  31           0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
  32           0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
  33           0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
  34          29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
  35         150,158,159,128,136,177,178,176,142,152,173,140
  36 };
  37
  38
  39 struct dc_kbd {
  40         struct input_dev dev;
  41         unsigned char new[8];
  42         unsigned char old[8];
  43 };
  44
  45
  46 static void dc_scan_kbd(struct dc_kbd *kbd)
  47 {
  48         int i;
  49         struct input_dev *dev = &kbd->dev;
  50
  51         for(i=0; i<8; i++)
  52                 input_report_key(dev,
  53                                  dc_kbd_keycode[i+224],
  54                                  (kbd->new[0]>>i)&1);
  55
  56         for(i=2; i<8; i++) {
  57
  58                 if(kbd->old[i]>3&&memscan(kbd->new+2, kbd->old[i], 6)==NULL) {
  59                         if(dc_kbd_keycode[kbd->old[i]])
  60                                 input_report_key(dev,
  61                                                  dc_kbd_keycode[kbd->old[i]],
  62                                                  0);
  63                         else
  64                                 printk("Unknown key (scancode %#x) released.",
  65                                        kbd->old[i]);
  66                 }
  67
  68                 if(kbd->new[i]>3&&memscan(kbd->old+2, kbd->new[i], 6)!=NULL) {
  69                         if(dc_kbd_keycode[kbd->new[i]])
  70                                 input_report_key(dev,
  71                                                  dc_kbd_keycode[kbd->new[i]],
  72                                                  1);
  73                         else
  74                                 printk("Unknown key (scancode %#x) pressed.",
  75                                        kbd->new[i]);
  76                 }
  77         }
  78
  79         input_sync(dev);
  80
  81         memcpy(kbd->old, kbd->new, 8);
  82 }
  83
  84
  85 static void dc_kbd_callback(struct mapleq *mq)
  86 {
  87         struct maple_device *mapledev = mq->dev;
  88         struct dc_kbd *kbd = mapledev->private_data;
  89         unsigned long *buf = mq->recvbuf;
  90
  91         if (buf[1] == mapledev->function) {
  92                 memcpy(kbd->new, buf+2, 8);
  93                 dc_scan_kbd(kbd);
  94         }
  95 }
  96
  97 static int dc_kbd_connect(struct maple_device *dev)
  98 {
  99         int i;
 100         unsigned long data = be32_to_cpu(dev->devinfo.function_data[0]);
 101         struct dc_kbd *kbd;
 102
 103         if (!(kbd = kmalloc(sizeof(struct dc_kbd), GFP_KERNEL)))
 104                 return -1;
 105         memset(kbd, 0, sizeof(struct dc_kbd));
 106
 107         dev->private_data = kbd;
 108
 109         kbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
 110
 111         init_input_dev(&kbd->dev);
 112
 113         for (i=0; i<255; i++)
 114                 set_bit(dc_kbd_keycode[i], kbd->dev.keybit);
 115
 116         clear_bit(0, kbd->dev.keybit);
 117
 118         kbd->dev.private = kbd;
 119
 120         kbd->dev.name = dev->product_name;
 121         kbd->dev.id.bustype = BUS_MAPLE;
 122
 123         input_register_device(&kbd->dev);
 124
 125         maple_getcond_callback(dev, dc_kbd_callback, 1, MAPLE_FUNC_KEYBOARD);
 126
 127         printk(KERN_INFO "input: keyboard(0x%lx): %s\n", data, kbd->dev.name);
 128
 129         return 0;
 130 }
 131
 132
 133 static void dc_kbd_disconnect(struct maple_device *dev)
 134 {
 135         struct dc_kbd *kbd = dev->private_data;
 136
 137         input_unregister_device(&kbd->dev);
 138         kfree(kbd);
 139 }
 140
 141
 142 static struct maple_driver dc_kbd_driver = {
 143         .function =     MAPLE_FUNC_KEYBOARD,
 144         .name =         "Dreamcast keyboard",
 145         .connect =      dc_kbd_connect,
 146         .disconnect =   dc_kbd_disconnect,
 147 };
 148
 149
 150 static int __init dc_kbd_init(void)
 151 {
 152         maple_register_driver(&dc_kbd_driver);
 153         return 0;
 154 }
 155
 156
 157 static void __exit dc_kbd_exit(void)
 158 {
 159         maple_unregister_driver(&dc_kbd_driver);
 160 }
 161
 162
 163 module_init(dc_kbd_init);
 164 module_exit(dc_kbd_exit);
 165
 166 /*
 167  * Local variables:
 168  * c-basic-offset: 8
 169  * End:
 170  */