platform/a460/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 static char kbd_stack[NEW_SS];
  39 
  40 long __attribute__((naked)) wrap_kbd_p1_f() ;
  41 
  42 static void __attribute__((noinline)) mykbd_task_proceed()
  43 {
  44     while (physw_run){
  45         _SleepTask(10);
  46 
  47         if (wrap_kbd_p1_f() == 1){ // autorepeat ?
  48             _kbd_p2_f();
  49         }
  50     }
  51 }
  52 
  53 void __attribute__((naked,noinline)) mykbd_task()
  54 {
  55     /* WARNING
  56      * Stack pointer manipulation performed here!
  57      * This means (but not limited to):
  58      *  function arguments destroyed;
  59      *  function CAN NOT return properly;
  60      *  MUST NOT call or use stack variables before stack
  61      *  is setup properly;
  62      *
  63      */
  64 
  65     register int i;
  66     register long *newstack;
  67 
  68     newstack = (void*)kbd_stack;
  69 
  70     for (i=0;i<NEW_SS/4;i++)
  71         newstack[i]=0xdededede;
  72 
  73     asm volatile (
  74         "MOV    SP, %0"
  75         :: "r"(((char*)newstack)+NEW_SS)
  76         : "memory"
  77     );
  78 
  79     mykbd_task_proceed();
  80 
  81     /* function can be modified to restore SP here...
  82      */
  83 
  84     _ExitTask();
  85 }
  86 
  87 
  88 long __attribute__((naked,noinline)) wrap_kbd_p1_f()
  89 {
  90 
  91     asm volatile(
  92                 "STMFD   SP!, {R4-R7,LR}\n"
  93                 "SUB     SP, SP, #0xC\n"
  94                 "BL      my_kbd_read_keys\n"
  95                 "B       _kbd_p1_f_cont\n"
  96     );
  97     return 0; // shut up the compiler
  98 }
  99 
 100 
 101 void my_kbd_read_keys()
 102 {
 103     _kbd_pwr_on();
 104 
 105     kbd_update_key_state();
 106 
 107     _kbd_read_keys_r2(physw_status);
 108 
 109     kbd_update_physw_bits();
 110 
 111     _kbd_pwr_off();
 112 }
 113 
 114 void kbd_fetch_data(long *dst)
 115 {
 116     volatile long *mmio0 = (void*)0xc0220200;
 117     volatile long *mmio1 = (void*)0xc0220204;
 118     volatile long *mmio2 = (void*)0xc0220208;
 119 
 120     dst[0] = *mmio0;
 121     dst[1] = *mmio1;
 122     dst[2] = *mmio2 & 0xffff;
 123 }
 124
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root/platform/a460/kbd.c

DEFINITIONS
