platform/a630/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 #define NEW_SS (0x2000)
  31 
  32 static char kbd_stack[NEW_SS];
  33 
  34 long __attribute__((naked)) wrap_kbd_p1_f() ;
  35 
  36 static void __attribute__((noinline)) mykbd_task_proceed()
  37 {
  38     while (physw_run){
  39         _SleepTask(10);
  40 
  41         if (wrap_kbd_p1_f() == 1){ // autorepeat ?
  42             _kbd_p2_f();
  43         }
  44     }
  45 }
  46 
  47 // TODO using C code in naked is unsafe
  48 void __attribute__((naked,noinline)) mykbd_task()
  49 {
  50     /* WARNING
  51      * Stack pointer manipulation performed here!
  52      * This means (but not limited to):
  53      *        function arguments destroyed;
  54      *        function CAN NOT return properly;
  55      *        MUST NOT call or use stack variables before stack
  56      *        is setup properly;
  57      *
  58      */
  59 
  60     register int i;
  61     register long *newstack;
  62 
  63     newstack = (void*)kbd_stack;
  64 
  65     for (i=0;i<NEW_SS/4;i++)
  66         newstack[i]=0xdededede;
  67 
  68     asm volatile (
  69         "MOV        SP, %0"
  70         :: "r"(((char*)newstack)+NEW_SS)
  71         : "memory"
  72     );
  73 
  74     mykbd_task_proceed();
  75 
  76     /* function can be modified to restore SP here...
  77      */
  78 
  79     _ExitTask();
  80 }
  81 
  82 void my_kbd_read_keys()
  83 {
  84     _kbd_pwr_on();
  85 
  86     kbd_update_key_state();
  87 
  88     _kbd_read_keys_r2(physw_status);
  89 
  90     kbd_update_physw_bits();
  91 
  92     _kbd_pwr_off();
  93 }
  94 
  95 long __attribute__((naked,noinline)) wrap_kbd_p1_f()
  96 {
  97 
  98     asm volatile(
  99                 "STMFD   SP!, {R4-R7,LR}\n"
 100                 "SUB     SP, SP, #0xC\n"
 101                 "BL      my_kbd_read_keys\n"
 102                 "B         _kbd_p1_f_cont\n"
 103     );
 104     return 0; // shut up the compiler
 105 }
 106 
 107 void kbd_fetch_data(long *dst)
 108 {
 109     volatile long *mmio0 = (void*)0xc0220200;
 110     volatile long *mmio1 = (void*)0xc0220204;
 111     volatile long *mmio2 = (void*)0xc0220208;
 112 
 113     dst[0] = *mmio0;
 114     dst[1] = *mmio1;
 115     dst[2] = *mmio2 & 0xffff;
 116 }
 117
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root/platform/a630/kbd.c

DEFINITIONS
