root/platform/a1000/kbd.c

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DEFINITIONS

This source file includes following definitions.
  1. get_usb_bit
  2. mykbd_task_proceed
  3. mykbd_task
  4. wrap_kbd_p1_f
  5. my_kbd_read_keys
  6. kbd_fetch_data

   1 #include "lolevel.h"
   2 #include "platform.h"
   3 #include "keyboard.h"
   4 #include "kbd_common.h"
   5 
   6 long kbd_new_state[3] = { 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF };
   7 long kbd_prev_state[3] = { 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF };
   8 long kbd_mod_state[3] = { 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF };
   9 
  10 KeyMap keymap[] = {
  11     /* tiny bug: key order matters. see kbd_get_pressed_key()
  12      * for example
  13      */
  14         { 2, KEY_UP             , 0x00000010 }, 
  15         { 2, KEY_DOWN           , 0x00000020 }, 
  16         { 2, KEY_LEFT           , 0x00000080 }, 
  17         { 2, KEY_RIGHT          , 0x00000040 }, 
  18         { 2, KEY_SET            , 0x00000100 }, 
  19         { 1, KEY_SHOOT_FULL     , 0xC0000000 },
  20     { 1, KEY_SHOOT_FULL_ONLY, 0x80000000 },
  21         { 1, KEY_SHOOT_HALF     , 0x40000000 }, 
  22         { 2, KEY_ZOOM_IN        , 0x00000004 }, 
  23         { 2, KEY_ZOOM_OUT       , 0x00000008 }, 
  24         { 2, KEY_MENU           , 0x00000200 }, 
  25         { 2, KEY_DISPLAY        , 0x00000400 }, 
  26         { 2, KEY_PRINT          , 0x00000800 }, 
  27         { 1, KEY_ERASE          , 0x00800000 }, 
  28         { 0, 0, 0 }
  29 };
  30 
  31 
  32 #define NEW_SS (0x2000)
  33 
  34 int get_usb_bit() 
  35 {
  36         long usb_physw[3];
  37         usb_physw[USB_IDX] = 0;
  38         _kbd_read_keys_r2(usb_physw);
  39         return(( usb_physw[USB_IDX] & USB_MASK)==USB_MASK) ; 
  40 }
  41 
  42 
  43 
  44 static char kbd_stack[NEW_SS];
  45 
  46 void kbd_fetch_data(long*);
  47 
  48 long __attribute__((naked)) wrap_kbd_p1_f() ;
  49 
  50 
  51 static void __attribute__((noinline)) mykbd_task_proceed()
  52 {
  53         while (physw_run){
  54                 _SleepTask(10);
  55                 if (wrap_kbd_p1_f() == 1){ // autorepeat ?
  56                         _kbd_p2_f();
  57                 }
  58         }
  59 }
  60 
  61 void __attribute__((naked,noinline))
  62 mykbd_task(long ua, long ub, long uc, long ud, long ue, long uf)
  63 {
  64     /* WARNING
  65      * Stack pointer manipulation performed here!
  66      * This means (but not limited to):
  67      *  function arguments destroyed;
  68      *  function CAN NOT return properly;
  69      *  MUST NOT call or use stack variables before stack
  70      *  is setup properly;
  71      *
  72      */
  73 
  74         register int i;
  75         register long *newstack;
  76 
  77         newstack = (void*)kbd_stack;
  78 
  79         for (i=0;i<NEW_SS/4;i++)
  80                 newstack[i]=0xdededede;
  81 
  82         asm volatile (
  83                 "MOV    SP, %0"
  84                 :: "r"(((char*)newstack)+NEW_SS)
  85                 : "memory"
  86         );
  87 
  88         mykbd_task_proceed();
  89 
  90         /* function can be modified to restore SP here...
  91          */
  92 
  93         _ExitTask();
  94 }
  95 
  96 
  97 long __attribute__((naked,noinline)) wrap_kbd_p1_f()
  98 {
  99 
 100         asm volatile(
 101                 "STMFD   SP!, {R1-R5,LR}\n"
 102                 "MOV     R4, #0\n"
 103                 "BL      my_kbd_read_keys\n"
 104                 "B       _kbd_p1_f_cont\n"
 105         );
 106         return 0; // shut up the compiler
 107 }
 108 
 109 
 110 void my_kbd_read_keys()
 111 {
 112     _kbd_pwr_on();
 113 
 114     kbd_update_key_state();
 115 
 116     _kbd_read_keys_r2(physw_status);
 117 
 118     kbd_update_physw_bits();
 119 
 120     _kbd_pwr_off();
 121 }
 122 
 123 void kbd_fetch_data(long *dst)
 124 {
 125     volatile long *mmio0 = (void*)0xc0220200;
 126     volatile long *mmio1 = (void*)0xc0220204;
 127     volatile long *mmio2 = (void*)0xc0220208;
 128 
 129     dst[0] = *mmio0;
 130     dst[1] = *mmio1;
 131     dst[2] = *mmio2 & 0xffff;
 132 }

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