pwr.c

U盘控制器USB97C223的固件代码,对2kPAGE NAND FLASH 有很好的支持.

/*============================================================================
  ____________________________________________________________________________
                                ______________________________________________
   SSSS  M   M          CCCC          Standard Microsystems Corporation
  S      MM MM   SSSS  C                    Austin Design Center
   SSS   M M M  S      C                 11000 N. Mopac Expressway
      S  M   M   SSS   C                Stonelake Bldg. 6, Suite 500
  SSSS   M   M      S   CCCC                Austin, Texas 78759
                SSSS            ______________________________________________
  ____________________________________________________________________________

  Copyright(C) 1999, Standard Microsystems Corporation
  All Rights Reserved.

  This program code listing is proprietary to SMSC and may not be copied,
  distributed, or used without a license to do so.  Such license may have
  Limited or Restricted Rights. Please refer to the license for further
  clarification.
  ____________________________________________________________________________

  Notice: The program contained in this listing is a proprietary trade
  secret of SMSC, Hauppauge, New York, and is copyrighted
  under the United States Copyright Act of 1976 as an unpublished work,
  pursuant to Section 104 and Section 408 of Title XVII of the United
  States code. Unauthorized copying, adaption, distribution, use, or
  display is prohibited by this law.
  ____________________________________________________________________________

  Use, duplication, or disclosure by the Government is subject to
  restrictions as set forth in subparagraph(c)(1)(ii) of the Rights
  in Technical Data and Computer Software clause at DFARS 52.227-7013.
  Contractor/Manufacturer is Standard Microsystems Corporation,
  80 Arkay Drive, Hauppauge, New York, 1178-8847.
  ____________________________________________________________________________
  ____________________________________________________________________________

  device.c - the device manager implementarion
  ____________________________________________________________________________

  comments tbd
  ____________________________________________________________________________

  Revision History
  Date      Who  Comment
  ________  ___  _____________________________________________________________
  12/16/02  cds  initial version - transferred from device.c
                      
 ===========================================================================*/

//------------------------------------------------------------------------------
#ifdef k_mcu_97223
#include "project.h"
#include "dev.h"

xdata t_pwr_mode g_pwr_mode;

//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
void pwr_initialize(void) reentrant
{
  // power-on value of pwr mgt register is for low power
  g_pwr_mode=k_pwr_mode_low;
  trace0(0, pwr, 0, "g_pwr_mode: k_power_mode_low");

}  

//------------------------------------------------------------------------------
#pragma NOAREGS
void pwr_set_full_power_mode(void) reentrant
{
  // always allow full power mode to be set.  If disabled, the init routine will call this to
  // enable full power mode.
  trace0(0, pwr, 0, "pwr_set_full_power_mode() -- enabling all register banks");
  if( _dev_pwr_mgmt_disabled() )
  {
    trace0(0, pwr, 0, "enabling full power, cf_ce and sm_ce pull-ups") ; 
    _mcu_register_set_bits(x_pwr_mgmt_ctl, kbm_pwr_mgmt_ctl_full_power);
  }
  _mcu_register_set_bits(x_pwr_mgmt_ctl, kbm_pwr_mgmt_ctl_configed); 

  g_pwr_mode=k_pwr_mode_full;
  trace1(0, pwr, 0, "x_pwr_mgmt_ctl:%02x", x_pwr_mgmt_ctl);

}

//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
void pwr_set_parial_power_mode() reentrant
{
  if( _dev_pwr_mgmt_disabled() )
    return;
  trace0(0, pwr, 0, "pwr_set_parial_power_mode() -- enabling sm pio registers");
  _mcu_register_set_bits(x_pwr_mgmt_ctl, kbm_pwr_mgmt_ctl_sm_pio_access); 
  _mcu_register_clr_bits(x_pwr_mgmt_ctl, kbm_pwr_mgmt_ctl_configed);
  g_pwr_mode=k_pwr_mode_partial;
  trace1(0, pwr, 0, "x_pwr_mgmt_ctl:%02x", x_pwr_mgmt_ctl);
}

//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
void pwr_set_low_power_mode(void) reentrant
{
  if( _dev_pwr_mgmt_disabled() )
    return;
  trace0(0, pwr, 0, "pwr_set_low_power_mode() -- powering down to low-power mode");
  _mcu_register_clr_bits(x_pwr_mgmt_ctl, kbm_pwr_mgmt_ctl_configed|kbm_pwr_mgmt_ctl_sm_pio_access); 
  g_pwr_mode=k_pwr_mode_low;
  trace1(0, pwr, 0, "x_pwr_mgmt_ctl:%02x", x_pwr_mgmt_ctl);
}

#pragma AREGS

#endif // k_mcu_97223

// eof -------------------------------------------------------------------------