platform/a450/kbd.c

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This source file includes following definitions.
get_usb_bit
mykbd_task_proceed
mykbd_task
wrap_kbd_p1_f
my_kbd_read_keys
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              , 0x00000001 }, // KEY_UP/KEY_ZOOM_IN 
  15     {2, KEY_DOWN            , 0x00000002 }, // KEY_DOWN/KEY_ZOOM_OUT/KEY_ERASE
  16     {2, KEY_LEFT            , 0x00000008 },
  17     {2, KEY_RIGHT           , 0x00000004 },
  18     {2, KEY_SET             , 0x00000100 },
  19     {2, KEY_SHOOT_FULL      , 0x00000030 }, // note 3 here!
  20     {2, KEY_SHOOT_FULL_ONLY , 0x00000020 },
  21     {2, KEY_SHOOT_HALF      , 0x00000010 },
  22     {2, KEY_MENU            , 0x00000400 },
  23     {2, KEY_DISPLAY         , 0x00000200 },
  24     {2, KEY_PRINT           , 0x00001000 },
  25     {0, 0, 0 }
  26 };
  27 
  28 #define NEW_SS (0x2000)
  29 
  30 int get_usb_bit() 
  31 {
  32         long usb_physw[3];
  33         usb_physw[USB_IDX] = 0;
  34         _kbd_read_keys_r2(usb_physw);
  35         return(( usb_physw[USB_IDX] & USB_MASK)==USB_MASK) ; 
  36 }
  37 
  38 
  39 static char kbd_stack[NEW_SS];
  40 
  41 long __attribute__((naked)) wrap_kbd_p1_f() ;
  42 
  43 static void __attribute__((noinline)) mykbd_task_proceed()
  44 {
  45     while (physw_run){
  46         _SleepTask(10);
  47 
  48         if (wrap_kbd_p1_f() == 1){ // autorepeat ?
  49             _kbd_p2_f();
  50         }
  51     }
  52 }
  53 
  54 void __attribute__((naked,noinline)) mykbd_task()
  55 {
  56     /* WARNING
  57      * Stack pointer manipulation performed here!
  58      * This means (but not limited to):
  59      *  function arguments destroyed;
  60      *  function CAN NOT return properly;
  61      *  MUST NOT call or use stack variables before stack
  62      *  is setup properly;
  63      *
  64      */
  65 
  66     register int i;
  67     register long *newstack;
  68 
  69     newstack = (void*)kbd_stack;
  70 
  71     for (i=0;i<NEW_SS/4;i++)
  72         newstack[i]=0xdededede;
  73 
  74     asm volatile (
  75         "MOV    SP, %0"
  76         :: "r"(((char*)newstack)+NEW_SS)
  77         : "memory"
  78     );
  79 
  80     mykbd_task_proceed();
  81 
  82     /* function can be modified to restore SP here...
  83      */
  84 
  85     _ExitTask();
  86 }
  87 
  88 
  89 long __attribute__((naked,noinline)) wrap_kbd_p1_f()
  90 {
  91 
  92     asm volatile(
  93                 "STMFD   SP!, {R4-R7,LR}\n"
  94                 "SUB     SP, SP, #0xC\n"
  95                 "BL      my_kbd_read_keys\n"
  96                 "B       _kbd_p1_f_cont\n"
  97     );
  98     return 0; // shut up the compiler
  99 }
 100 
 101 
 102 void my_kbd_read_keys()
 103 {
 104     kbd_update_key_state();
 105 
 106     _kbd_read_keys_r2(physw_status);
 107 
 108     kbd_update_physw_bits();
 109 }
 110 
 111 void kbd_fetch_data(long *dst)
 112 {
 113     volatile long *mmio0 = (void*)0xc0220200;
 114     volatile long *mmio1 = (void*)0xc0220204;
 115     volatile long *mmio2 = (void*)0xc0220208;
 116 
 117     dst[0] = *mmio0;
 118     dst[1] = *mmio1;
 119     dst[2] = *mmio2 & 0xffff;
 120 }
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root/platform/a450/kbd.c

DEFINITIONS
