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         int open;
  44 };
  45
  46
  47 static void dc_scan_kbd(struct dc_kbd *kbd)
  48 {
  49         int i;
  50         struct input_dev *dev = &kbd->dev;
  51
  52         for(i=0; i<8; i++)
  53                 input_report_key(dev,
  54                                  dc_kbd_keycode[i+224],
  55                                  (kbd->new[0]>>i)&1);
  56
  57         for(i=2; i<8; i++) {
  58
  59                 if(kbd->old[i]>3&&memscan(kbd->new+2, kbd->old[i], 6)==NULL) {
  60                         if(dc_kbd_keycode[kbd->old[i]])
  61                                 input_report_key(dev,
  62                                                  dc_kbd_keycode[kbd->old[i]],
  63                                                  0);
  64                         else
  65                                 printk("Unknown key (scancode %#x) released.",
  66                                        kbd->old[i]);
  67                 }
  68
  69                 if(kbd->new[i]>3&&memscan(kbd->old+2, kbd->new[i], 6)!=NULL) {
  70                         if(dc_kbd_keycode[kbd->new[i]])
  71                                 input_report_key(dev,
  72                                                  dc_kbd_keycode[kbd->new[i]],
  73                                                  1);
  74                         else
  75                                 printk("Unknown key (scancode %#x) pressed.",
  76                                        kbd->new[i]);
  77                 }
  78         }
  79
  80         input_sync(dev);
  81
  82         memcpy(kbd->old, kbd->new, 8);
  83 }
  84
  85
  86 static void dc_kbd_callback(struct mapleq *mq)
  87 {
  88         struct maple_device *mapledev = mq->dev;
  89         struct dc_kbd *kbd = mapledev->private_data;
  90         unsigned long *buf = mq->recvbuf;
  91
  92         if (buf[1] == mapledev->function) {
  93                 memcpy(kbd->new, buf+2, 8);
  94                 dc_scan_kbd(kbd);
  95         }
  96 }
  97
  98
  99 static int dc_kbd_open(struct input_dev *dev)
 100 {
 101         struct dc_kbd *kbd = dev->private;
 102         kbd->open++;
 103         return 0;
 104 }
 105
 106
 107 static void dc_kbd_close(struct input_dev *dev)
 108 {
 109         struct dc_kbd *kbd = dev->private;
 110         kbd->open--;
 111 }
 112
 113
 114 static int dc_kbd_connect(struct maple_device *dev)
 115 {
 116         int i;
 117         unsigned long data = be32_to_cpu(dev->devinfo.function_data[0]);
 118         struct dc_kbd *kbd;
 119
 120         if (!(kbd = kmalloc(sizeof(struct dc_kbd), GFP_KERNEL)))
 121                 return -1;
 122         memset(kbd, 0, sizeof(struct dc_kbd));
 123
 124         dev->private_data = kbd;
 125
 126         kbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
 127
 128         init_input_dev(&kbd->dev);
 129
 130         for (i=0; i<255; i++)
 131                 set_bit(dc_kbd_keycode[i], kbd->dev.keybit);
 132
 133         clear_bit(0, kbd->dev.keybit);
 134
 135         kbd->dev.private = kbd;
 136         kbd->dev.open = dc_kbd_open;
 137         kbd->dev.close = dc_kbd_close;
 138         kbd->dev.event = NULL;
 139
 140         kbd->dev.name = dev->product_name;
 141         kbd->dev.id.bustype = BUS_MAPLE;
 142
 143         input_register_device(&kbd->dev);
 144
 145         maple_getcond_callback(dev, dc_kbd_callback, 1, MAPLE_FUNC_KEYBOARD);
 146
 147         printk(KERN_INFO "input: keyboard(0x%lx): %s\n", data, kbd->dev.name);
 148
 149         return 0;
 150 }
 151
 152
 153 static void dc_kbd_disconnect(struct maple_device *dev)
 154 {
 155         struct dc_kbd *kbd = dev->private_data;
 156
 157         input_unregister_device(&kbd->dev);
 158         kfree(kbd);
 159 }
 160
 161
 162 static struct maple_driver dc_kbd_driver = {
 163         .function =     MAPLE_FUNC_KEYBOARD,
 164         .name =         "Dreamcast keyboard",
 165         .connect =      dc_kbd_connect,
 166         .disconnect =   dc_kbd_disconnect,
 167 };
 168
 169
 170 static int __init dc_kbd_init(void)
 171 {
 172         maple_register_driver(&dc_kbd_driver);
 173         return 0;
 174 }
 175
 176
 177 static void __exit dc_kbd_exit(void)
 178 {
 179         maple_unregister_driver(&dc_kbd_driver);
 180 }
 181
 182
 183 module_init(dc_kbd_init);
 184 module_exit(dc_kbd_exit);
 185
 186 /*
 187  * Local variables:
 188  * c-basic-offset: 8
 189  * End:
 190  */