root/platform/ixus900_sd900/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() for example
  12     {2, KEY_UP            , 0x00000010},
  13     {2, KEY_DOWN          , 0x00000020},
  14     {2, KEY_LEFT          , 0x00000080},
  15     {2, KEY_RIGHT         , 0x00000040},
  16     {2, KEY_SET           , 0x00000100},
  17     {1, KEY_SHOOT_FULL    , 0xC0000000},
  18     {1, KEY_SHOOT_FULL_ONLY, 0x80000000},
  19     {1, KEY_SHOOT_HALF    , 0x40000000},
  20     {2, KEY_ZOOM_IN       , 0x00000004},
  21     {2, KEY_ZOOM_OUT      , 0x00000008},
  22     {2, KEY_MENU          , 0x00000200},
  23     {2, KEY_DISPLAY       , 0x00000400},
  24     {2, KEY_PRINT         , 0x00000800},
  25     {0, 0, 0}
  26 };
  27 
  28 int get_usb_bit() 
  29 {
  30         long usb_physw[3];
  31         usb_physw[USB_IDX] = 0;
  32         _kbd_read_keys_r2(usb_physw);
  33         return(( usb_physw[USB_IDX] & USB_MASK)==USB_MASK) ; 
  34 }
  35 
  36 #define NEW_SS (0x2000)
  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     while(physw_run) {
  44         _SleepTask(10);
  45         if(wrap_kbd_p1_f() == 1) {    // Readout key state via camera function
  46             _kbd_p2_f();
  47         }
  48     }
  49 }
  50 
  51 void __attribute__((naked,noinline)) mykbd_task(long ua, long ub, long uc, long ud, long ue, long uf) {
  52     /* WARNING
  53      * Stack pointer manipulation performed here!
  54      * This means (but not limited to):
  55      * function arguments destroyed;
  56      * function CAN NOT return properly;
  57      * MUST NOT call or use stack variables before stack
  58      * is setup properly;
  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\n"
  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     _ExitTask();
  79 }
  80 
  81 // ROM:FF827F58
  82 long __attribute__((naked,noinline)) wrap_kbd_p1_f() {
  83     asm volatile(
  84         "STMFD   SP!, {R4-R7,LR}\n"
  85         "SUB     SP, SP, #0xC\n"
  86 //        "BL      _kbd_read_keys\n"   // replacement for kbd_fetch_data()
  87         "BL      my_kbd_read_keys\n"
  88         "B       _kbd_p1_f_cont\n"
  89     );
  90     return 0;   // shut up the compiler
  91 }
  92 
  93 // ToDo: required?
  94 /*
  95 #if CAM_FEATURE_FEATHER
  96     extern int touch_keys_angle;
  97     extern int * touch_keys_sema;
  98     int touch_keys_sema_stored;
  99 #endif
 100 */
 101 
 102 void my_kbd_read_keys() {
 103     static int taskFeatherID = 0;
 104     extern int taskNameToId(char*);
 105     if (taskFeatherID == 0) {
 106         taskFeatherID = _taskNameToId("tFeather");
 107         //printf("taskFeatherID:%x\n", taskFeatherID);
 108     }
 109 
 110     if(kbd_update_key_state() == 0) {
 111         _taskResume(taskFeatherID);
 112     } else {
 113         _taskSuspend(taskFeatherID);
 114         // the equivalent of this code was not enabled in original port
 115         /*
 116         // We still need this sema when simulating key presses
 117         if ((kbd_mod_state[2] & KEYS_MASK2)!=KEYS_MASK2) {
 118             _taskResume(taskFeatherID);
 119         }
 120         */
 121     }
 122     kbd_update_physw_bits();
 123 }
 124 
 125 extern void _GetKbdState(long *dst);
 126 
 127 void kbd_fetch_data(long *dst)
 128 {
 129     _kbd_pwr_on();
 130     _GetKbdState(dst);
 131     _kbd_read_keys_r2(dst);
 132     _kbd_pwr_off();
 133 }

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