platform/sx120is/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
jogdial_control
Get_JogDial
get_jogdial_direction
   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 #define NEW_SS (0x2000)
  11 
  12 int get_usb_bit() 
  13 {
  14         long usb_physw[3];
  15         usb_physw[USB_IDX] = 0;
  16         _kbd_read_keys_r2(usb_physw);
  17         return(( usb_physw[USB_IDX] & USB_MASK)==USB_MASK) ; 
  18 }
  19 
  20 static char kbd_stack[NEW_SS];
  21 
  22 KeyMap keymap[] = {
  23         // Order IS important. kbd_get_pressed_key will walk down this table  
  24         // and take the first matching mask. Notice that KEY_SHOOT_HALF is  
  25         // always pressed if KEY_SHOOT_FULL is. --MarcusSt
  26         //{ 0, KEY_FLASH     , 0x80000000 },
  27         { 2, KEY_MENU      , 0x00002000 },
  28         { 2, KEY_UP        , 0x00000100 },
  29         { 2, KEY_DOWN      , 0x00000200 },
  30         { 2, KEY_LEFT      , 0x00000800 },
  31         { 2, KEY_RIGHT     , 0x00000400 },
  32         { 2, KEY_SET       , 0x00001000 },
  33         { 1, KEY_FACE      , 0x10000000 },
  34         { 2, KEY_ERASE     , 0x00008000 },
  35         { 2, KEY_DISPLAY   , 0x00004000 },
  36         { 2, KEY_ZOOM_IN   , 0x00000010 },
  37         { 2, KEY_ZOOM_OUT  , 0x00000020 },
  38         { 2, KEY_SHOOT_FULL, 0x0000000C },
  39     { 2, KEY_SHOOT_FULL_ONLY, 0x00000008 },
  40         { 2, KEY_SHOOT_HALF, 0x00000004 },
  41         { 0, 0, 0 }
  42 };
  43 
  44 extern void _GetKbdState(long *dst);
  45 
  46 long __attribute__((naked)) wrap_kbd_p1_f();
  47 
  48 static void __attribute__((noinline)) mykbd_task_proceed()
  49 {
  50         while (physw_run){
  51                 _SleepTask(10);
  52                 if (wrap_kbd_p1_f() == 1){ // autorepeat ?
  53                         _kbd_p2_f();
  54                 }
  55         }
  56 }
  57 
  58 void __attribute__((naked,noinline)) mykbd_task()
  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!, {R1-R5,LR}\n"
  98                 "MOV     R4, #0\n"
  99                 "BL      _kbd_read_keys\n"
 100                 "BL      my_kbd_read_keys\n"
 101                 "B       _kbd_p1_f_cont\n"
 102         );
 103         return 0; // shut up the compiler
 104 }
 105 
 106 
 107 int jogdial_stopped=0;
 108 
 109 void my_kbd_read_keys()
 110 {       
 111     kbd_update_key_state();
 112     kbd_update_physw_bits();
 113 }
 114 
 115 void kbd_fetch_data(long *dst)
 116 {
 117     _kbd_pwr_on();
 118     _GetKbdState(dst);
 119     _kbd_read_keys_r2(dst);
 120     _kbd_pwr_off();
 121 }
 122 
 123 void jogdial_control(int n) {
 124     // this camera did not have jog_position defined
 125     /*
 126     if (jogdial_stopped && !n) {
 127         // If re-enabling jogdial set the task code current & previous positions to the actual
 128         // dial positions so that the change won't get processed by the firmware
 129         jog_position[0] = jog_position[2] = rear_dial_position;   // Rear dial
 130     }
 131     */
 132     jogdial_stopped = n;
 133 }
 134 
 135 static int new_jogdial=0, old_jogdial=0;
 136 
 137 int Get_JogDial(void){
 138 /* found at sub_FFC36528 (0xFFC36538 and 0xFFC36564)
 139 ROM:FFC36538                 LDR     R7, =0xC0240000
 140 ...
 141 ROM:FFC36564                 LDR     R0, [R7,#0x104]
 142 */
 143  return (*(int*)0xC0240104)>>16;                
 144  
 145 }
 146 
 147 long get_jogdial_direction(void) { 
 148  old_jogdial=new_jogdial;
 149  new_jogdial=Get_JogDial();
 150  if (old_jogdial<new_jogdial) return JOGDIAL_RIGHT; 
 151  else if (old_jogdial>new_jogdial) return JOGDIAL_LEFT;
 152  else return 0;
 153 }
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root/platform/sx120is/kbd.c

DEFINITIONS
