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, dc_kbd_keycode[i + 224], (kbd->new[0] >> i) & 1);
  53
  54         for (i = 2; i < 8; i++) {
  55
  56                 if (kbd->old[i] > 3 && memscan(kbd->new + 2, kbd->old[i], 6) == NULL) {
  57                         if (dc_kbd_keycode[kbd->old[i]])
  58                                 input_report_key(dev, dc_kbd_keycode[kbd->old[i]], 0);
  59                         else
  60                                 printk("Unknown key (scancode %#x) released.",
  61                                        kbd->old[i]);
  62                 }
  63
  64                 if (kbd->new[i] > 3 && memscan(kbd->old + 2, kbd->new[i], 6) != NULL) {
  65                         if(dc_kbd_keycode[kbd->new[i]])
  66                                 input_report_key(dev, dc_kbd_keycode[kbd->new[i]], 1);
  67                         else
  68                                 printk("Unknown key (scancode %#x) pressed.",
  69                                        kbd->new[i]);
  70                 }
  71         }
  72
  73         input_sync(dev);
  74
  75         memcpy(kbd->old, kbd->new, 8);
  76 }
  77
  78
  79 static void dc_kbd_callback(struct mapleq *mq)
  80 {
  81         struct maple_device *mapledev = mq->dev;
  82         struct dc_kbd *kbd = mapledev->private_data;
  83         unsigned long *buf = mq->recvbuf;
  84
  85         if (buf[1] == mapledev->function) {
  86                 memcpy(kbd->new, buf + 2, 8);
  87                 dc_scan_kbd(kbd);
  88         }
  89 }
  90
  91 static int dc_kbd_connect(struct maple_device *dev)
  92 {
  93         struct dc_kbd *kbd;
  94         struct input_dev *input_dev;
  95         unsigned long data = be32_to_cpu(dev->devinfo.function_data[0]);
  96         int i;
  97
  98         dev->private_data = kbd = kzalloc(sizeof(struct dc_kbd), GFP_KERNEL);
  99         input_dev = input_allocate_device();
 100         if (!kbd || !input_dev) {
 101                 kfree(kbd);
 102                 input_free_device(input_dev);
 103                 return -ENOMEM;
 104         }
 105
 106         kbd->dev = input_dev;
 107
 108         input_dev->name = dev->product_name;
 109         input_dev->id.bustype = BUS_MAPLE;
 110         input_dev->private = kbd;
 111         input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
 112         for (i = 0; i < 255; i++)
 113                 set_bit(dc_kbd_keycode[i], input_dev->keybit);
 114         clear_bit(0, input_dev->keybit);
 115
 116         input_register_device(kbd->dev);
 117
 118         maple_getcond_callback(dev, dc_kbd_callback, 1, MAPLE_FUNC_KEYBOARD);
 119         return 0;
 120 }
 121
 122
 123 static void dc_kbd_disconnect(struct maple_device *dev)
 124 {
 125         struct dc_kbd *kbd = dev->private_data;
 126
 127         input_unregister_device(kbd->dev);
 128         kfree(kbd);
 129 }
 130
 131
 132 static struct maple_driver dc_kbd_driver = {
 133         .function =     MAPLE_FUNC_KEYBOARD,
 134         .name =         "Dreamcast keyboard",
 135         .connect =      dc_kbd_connect,
 136         .disconnect =   dc_kbd_disconnect,
 137 };
 138
 139
 140 static int __init dc_kbd_init(void)
 141 {
 142         maple_register_driver(&dc_kbd_driver);
 143         return 0;
 144 }
 145
 146
 147 static void __exit dc_kbd_exit(void)
 148 {
 149         maple_unregister_driver(&dc_kbd_driver);
 150 }
 151
 152
 153 module_init(dc_kbd_init);
 154 module_exit(dc_kbd_exit);
 155
 156 /*
 157  * Local variables:
 158  * c-basic-offset: 8
 159  * End:
 160  */