platform/a570/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      , 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 }, // note 3 here!
  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 , 0x000000400 },
  26         {2, KEY_PRINT   , 0x00000800},
  27         {1, KEY_ERASE   , 0x00800000 },
  28         {0, 0, 0 }
  29 };
  30 
  31 int get_usb_bit() 
  32 {
  33         long usb_physw[3];
  34         usb_physw[USB_IDX] = 0;
  35         _kbd_read_keys_r2(usb_physw);
  36         return(( usb_physw[USB_IDX] & USB_MASK)==USB_MASK) ; 
  37 }
  38 
  39 
  40 #define NEW_SS (0x2000)
  41 static char kbd_stack[NEW_SS];
  42 
  43 long __attribute__((naked)) wrap_kbd_p1_f() ;
  44 
  45 static void __attribute__((noinline)) mykbd_task_proceed()
  46 {
  47     while (physw_run){
  48         _SleepTask(10);
  49 
  50         if (wrap_kbd_p1_f() == 1){ // autorepeat ?
  51             _kbd_p2_f();
  52         }
  53     }
  54 }
  55 
  56 void __attribute__((naked,noinline)) mykbd_task(long ua, long ub, long uc, long ud, long ue, long uf)
  57 {
  58     (void)ua; (void)ub; (void)uc; (void)ud; (void)ue; (void)uf;
  59     /* WARNING
  60      * Stack pointer manipulation performed here!
  61      * This means (but not limited to):
  62      *  function arguments destroyed;
  63      *  function CAN NOT return properly;
  64      *  MUST NOT call or use stack variables before stack
  65      *  is setup properly;
  66      *
  67      */
  68 
  69     register int i;
  70     register long *newstack;
  71 
  72     newstack = (void*)kbd_stack;
  73 
  74     for (i=0;i<NEW_SS/4;i++)
  75         newstack[i]=0xdededede;
  76 
  77     asm volatile (
  78         "MOV    SP, %0"
  79         :: "r"(((char*)newstack)+NEW_SS)
  80         : "memory"
  81     );
  82 
  83     mykbd_task_proceed();
  84 
  85     /* function can be modified to restore SP here...
  86      */
  87 
  88     _ExitTask();
  89 }
  90 
  91 
  92 long __attribute__((naked,noinline)) wrap_kbd_p1_f()
  93 {
  94 
  95     asm volatile(
  96                 "STMFD   SP!, {R4-R7,LR}\n"
  97                 "SUB     SP, SP, #0xC\n"
  98                 "BL      my_kbd_read_keys\n"
  99                 "B       _kbd_p1_f_cont\n"
 100     );
 101     return 0; // shut up the compiler
 102 }
 103 
 104 
 105 void my_kbd_read_keys()
 106 {
 107     _kbd_pwr_on();
 108 
 109     kbd_update_key_state();
 110 
 111     _kbd_read_keys_r2(physw_status);
 112 
 113     kbd_update_physw_bits();
 114 
 115     _kbd_pwr_off();
 116 }
 117 
 118 
 119 
 120 void kbd_fetch_data(long *dst)
 121 {
 122     volatile long *mmio0 = (void*)0xc0220200;
 123     volatile long *mmio1 = (void*)0xc0220204;
 124     volatile long *mmio2 = (void*)0xc0220208;
 125 
 126     dst[0] = *mmio0;
 127     dst[1] = *mmio1;
 128     dst[2] = *mmio2 & 0xffff;
 129 }
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root/platform/a570/kbd.c

DEFINITIONS
