platform/a620/kbd.c

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This source file includes following definitions.
mykbd_task_proceed
mykbd_task
my_kbd_read_keys
wrap_kbd_p1_f
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 },
  15         {2, KEY_DOWN    , 0x00000002 },
  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_ZOOM_IN , 0x00000040 },
  23         {2, KEY_ZOOM_OUT        , 0x00000080 },
  24         {2, KEY_MENU    , 0x00000200 },
  25         {2, KEY_DISPLAY , 0x00000400 },
  26         {2, KEY_PRINT   , 0x00001000 },
  27         {2, KEY_ERASE   , 0x00000800 },
  28         {0, 0, 0 }
  29 };
  30 
  31 #define NEW_SS (0x2000)
  32 
  33 static char kbd_stack[NEW_SS];
  34 
  35 long __attribute__((naked)) wrap_kbd_p1_f() ;
  36 
  37 static void __attribute__((noinline)) mykbd_task_proceed()
  38 {
  39     while (physw_run){
  40         _SleepTask(10);
  41 
  42         if (wrap_kbd_p1_f() == 1){ // autorepeat ?
  43             _kbd_p2_f();
  44         }
  45     }
  46 }
  47 
  48 // TODO using C code in naked is unsafe
  49 void __attribute__((naked,noinline)) mykbd_task()
  50 {
  51     /* WARNING
  52      * Stack pointer manipulation performed here!
  53      * This means (but not limited to):
  54      *        function arguments destroyed;
  55      *        function CAN NOT return properly;
  56      *        MUST NOT call or use stack variables before stack
  57      *        is setup properly;
  58      *
  59      */
  60 
  61     register int i;
  62     register long *newstack;
  63 
  64     newstack = (void*)kbd_stack;
  65 
  66     for (i=0;i<NEW_SS/4;i++)
  67         newstack[i]=0xdededede;
  68 
  69     asm volatile (
  70         "MOV        SP, %0"
  71         :: "r"(((char*)newstack)+NEW_SS)
  72         : "memory"
  73     );
  74 
  75     mykbd_task_proceed();
  76 
  77     /* function can be modified to restore SP here...
  78      */
  79 
  80     _ExitTask();
  81 }
  82 
  83 void my_kbd_read_keys()
  84 {
  85     _kbd_pwr_on();
  86 
  87     kbd_update_key_state();
  88 
  89     _kbd_read_keys_r2(physw_status);
  90 
  91     kbd_update_physw_bits();
  92 
  93     _kbd_pwr_off();
  94 }
  95 
  96 long __attribute__((naked,noinline)) wrap_kbd_p1_f()
  97 {
  98 
  99     asm volatile(
 100                 "STMFD   SP!, {R4-R7,LR}\n"
 101                 "SUB     SP, SP, #0xC\n"
 102                 "BL      my_kbd_read_keys\n"
 103                 "B         _kbd_p1_f_cont\n"
 104     );
 105     return 0; // shut up the compiler
 106 }
 107 
 108 void kbd_fetch_data(long *dst)
 109 {
 110     volatile long *mmio1 = (void*)0xc0220204;
 111     volatile long *mmio2 = (void*)0xc0220208;
 112 
 113     dst[0] = 0;
 114     dst[1] = *mmio1;
 115     dst[2] = *mmio2 & 0xffff;
 116 }
 117
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root/platform/a620/kbd.c

DEFINITIONS
