arch/arm/cpu/armv7/tiger/watchdog_hal.c

   1 /******************************************************************************
   2  ** File Name:      watchdog_hal.c                                                 *
   3  ** Author:         Jimmy.Jia                                                 *
   4  ** DATE:           10/28/2004                                                *
   5  ** Copyright:      2004 Spreadtrum, Incoporated. All Rights Reserved.        *
   6  ** Description:    This file defines the basic operation interfaces of       *
   7  **                 serrial device. It manages create, send, receive          *
   8  **                 interface of serrial port.                                *
   9  ******************************************************************************
  10
  11  ******************************************************************************
  12  **                        Edit History                                       *
  13  ** ------------------------------------------------------------------------- *
  14  ** DATE           NAME             DESCRIPTION                               *
  15  ** 04/02/2002     Jimmy.Jia        Create.                                   *
  16 **  01/03/2008     Yi.Qiu        For SC6600L                                  *
  17  ******************************************************************************/
  18
  19 /**---------------------------------------------------------------------------*
  20  **                         Dependencies                                      *
  21  **---------------------------------------------------------------------------*/
  22 #include <asm/arch/sci_types.h>
  23 #include <asm/arch/sc_reg.h>
  24 #include <asm/arch/os_api.h>
  25 #include <asm/arch/wdg_drvapi.h>
  26 //#include "fiq_drvapi.h"
  27 #include <asm/arch/watchdog_phy.h>
  28
  29 #define  WDG_TRACE
  30 /**---------------------------------------------------------------------------*
  31  **                      Function Declaration                                 *
  32  **---------------------------------------------------------------------------*/
  33
  34 /*****************************************************************************/
  35 //  Description:    This function disable WDG timer
  36 //  Author:         Jimmy.Jia
  37 //  Note:           no rtc_clk to drive the counter
  38 //
  39 /*****************************************************************************/
  40 PUBLIC void WDG_TimerStop
  41 (
  42     void
  43 )
  44 {
  45     WDG_CONFIG_T config;
  46     int32        ret;
  47
  48     WDG_TRACE ("Watch Dog Trace: WDG_TimerStop");
  49     WDG_PHY_INT_CLR();
  50
  51     config.state    = WDG_TIMER_STATE_STOP  ;
  52     config.mode     = WDG_TIMEOUT_MODE_RESET;
  53     config.val      = WDG_MAX_COUNT;
  54
  55     ret = WDG_PHY_CONFIG (&config);
  56
  57     return;
  58 }
  59
  60 /*****************************************************************************/
  61 //  Description:    This function initialize and setup timer with given value
  62 //  Author:         Jimmy.Jia
  63 //  Note:           rtc_clk drive the counter
  64 //                  load regiter is 32 bits wide so that don't check if param's valid
  65 /*****************************************************************************/
  66 PUBLIC void WDG_TimerStart
  67 (
  68     uint32 init_val
  69 )
  70 {
  71     WDG_CONFIG_T config;
  72     int32        ret;
  73
  74     WDG_TRACE ("Watch Dog Trace: WDG_TimerStart");
  75
  76     config.state    = WDG_TIMER_STATE_START ;
  77     //config.mode     = WDG_TIMEOUT_MODE_KEEP;
  78     config.mode     = WDG_TIMEOUT_MODE_RESET;
  79     config.val      = init_val;
  80
  81     ret = WDG_PHY_CONFIG (&config);
  82
  83 }
  84
  85 /*****************************************************************************/
  86 //  Description:    This function handle WatchDog Interrupt
  87 //  Author:         Binggo Zhou
  88 //  Note:
  89 /*****************************************************************************/
  90 PUBLIC void WDG_TimerHandler (uint32 int_num)
  91 {
  92     WDG_PHY_INT_CLR();
  93 }
  94
  95 /*****************************************************************************/
  96 //  Description:    This function init WatchDog
  97 //  Author:         Binggo Zhou
  98 //  Note:
  99 /*****************************************************************************/
 100 PUBLIC void WDG_TimerInit (void)
 101 {
 102     WDG_CONFIG_T config;
 103     uint32       status;
 104     int32        ret;
 105
 106     WDG_TRACE ("Watch Dog Trace: WDG_TimerInit");
 107
 108     config.state    = WDG_TIMER_STATE_START ;
 109     config.mode     = WDG_TIMEOUT_MODE_RESET;
 110     config.val      = WDG_INIT_COUNT;
 111
 112     ret = WDG_PHY_CONFIG (&config);
 113 #if 0   //added by mingwei
 114     status = FIQ_RegHandler (TB_WDG_INT, WDG_TimerHandler);
 115     SCI_PASSERT ( (FIQ_SUCCESS == status || FIQ_ISR_ASSIGNED == status),
 116                   ("%s, %d, fiq regist status: %d", __MODULE__, __LINE__, status));
 117 #endif
 118 }
 119
 120 /*****************************************************************************/
 121 //  Description:    This function Reset MCU
 122 //  Author:         Younger.Yang
 123 //  Note:
 124 /*****************************************************************************/
 125 PUBLIC void WDG_ResetMCU (void)
 126 {
 127     WDG_CONFIG_T config;
 128     int32        ret;
 129
 130     WDG_TRACE ("Watch Dog Trace: WDG_ResetMCU");
 131     config.state    = WDG_TIMER_STATE_START ;
 132     config.mode     = WDG_TIMEOUT_MODE_RESET;
 133     config.val      = 0x50;
 134
 135     ret = WDG_PHY_CONFIG (&config);
 136 }
 137
 138 /*****************************************************************************/
 139 //  Description:    This function Load WatchDog Timer Value
 140 //  Author:         Binggo Zhou
 141 //  Note:
 142 /*****************************************************************************/
 143 PUBLIC void WDG_TimerLoad (uint32 time_ms)
 144 {
 145     WDG_CONFIG_T config;
 146     int32        ret;
 147
 148     WDG_TRACE ("Watch Dog Trace: WDG_TimerLoad %d", time_ms);
 149
 150     config.state    = WDG_TIMER_STATE_KEEP  ;
 151     config.mode     = WDG_TIMEOUT_MODE_KEEP ;
 152     config.val      = (time_ms * 1000) / 30;
 153
 154     ret = WDG_PHY_CONFIG (&config);
 155 }