root/platform/ixus850_sd800/kbd.c

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DEFINITIONS

This source file includes following definitions.
  1. get_usb_bit
  2. mykbd_task_proceed
  3. mykbd_task
  4. wrap_kbd_p1_f
  5. my_kbd_read_keys
  6. 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    , 0x00000040 },
  16         {2, KEY_LEFT    , 0x00000080 },
  17         {2, KEY_RIGHT   , 0x00000020 },
  18         {2, KEY_SET     , 0x00000100 },
  19         {1, KEY_SHOOT_FULL, 0xC0000000 },
  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 , 0x00000400 },
  26         {2, KEY_PRINT   , 0x00000800 },
  27       //  {2, KEY_DUMMY , 0x00000800 },
  28         { 0, 0 }
  29 };
  30 
  31 
  32 int get_usb_bit() 
  33 {
  34         long usb_physw[3];
  35         usb_physw[USB_IDX] = 0;
  36         _kbd_read_keys_r2(usb_physw);
  37         return(( usb_physw[USB_IDX] & USB_MASK)==USB_MASK) ; 
  38 }
  39 
  40 
  41 #define NEW_SS (0x2000)
  42 
  43 static char kbd_stack[NEW_SS];
  44 
  45 long __attribute__((naked)) wrap_kbd_p1_f();
  46 
  47 static void __attribute__((noinline)) mykbd_task_proceed()
  48 {
  49     while (physw_run){
  50         _SleepTask(10);
  51 
  52         if (wrap_kbd_p1_f() == 1){ // autorepeat ?
  53             _kbd_p2_f();
  54         }
  55     }
  56 }
  57 
  58 void __attribute__((naked,noinline)) mykbd_task(long ua, long ub, long uc, long ud, long ue, long uf)
  59 {
  60     /* WARNING
  61      * Stack pointer manipulation performed here!
  62      * This means (but not limited to):
  63      *  function arguments destroyed;
  64      *  function CAN NOT return properly;
  65      *  MUST NOT call or use stack variables before stack
  66      *  is setup properly;
  67      *
  68      */
  69 
  70     register int i;
  71     register long *newstack;
  72 
  73     newstack = (void*)kbd_stack;
  74 
  75     for (i=0;i<NEW_SS/4;i++)
  76         newstack[i]=0xdededede;
  77 
  78     asm volatile (
  79         "MOV    SP, %0"
  80         :: "r"(((char*)newstack)+NEW_SS)
  81         : "memory"
  82     );
  83 
  84     mykbd_task_proceed();
  85 
  86     /* function can be modified to restore SP here...
  87      */
  88 
  89     _ExitTask();
  90 }
  91 
  92 
  93 long __attribute__((naked,noinline)) wrap_kbd_p1_f()
  94 {
  95 
  96     asm volatile(
  97                 "STMFD   SP!, {R4-R7,LR}\n"
  98                 "SUB     SP, SP, #0xC\n"
  99                 "BL      my_kbd_read_keys\n"
 100                 "B       _kbd_p1_f_cont\n"
 101     );
 102     return 0; // shut up the compiler
 103 }
 104 
 105 
 106 void my_kbd_read_keys()
 107 {
 108     _kbd_pwr_on();
 109 
 110     kbd_update_key_state();
 111 
 112     _kbd_read_keys_r2(physw_status);
 113 
 114     kbd_update_physw_bits();
 115 
 116     _kbd_pwr_off();
 117 }
 118 
 119 
 120 
 121 
 122 void kbd_fetch_data(long *dst)
 123 {
 124     volatile long *mmio0 = (void*)0xc0220200;
 125     volatile long *mmio1 = (void*)0xc0220204;
 126     volatile long *mmio2 = (void*)0xc0220208;
 127 
 128     dst[0] = *mmio0;
 129     dst[1] = *mmio1;
 130     dst[2] = *mmio2 & 0xffff;
 131 }

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