tmpowerdown.c

用于TM1300/PNX1300系列DSP（主要用于视频处理）的设备库的源码

/*
 *  +-------------------------------------------------------------------+
 *  | Copyright (c) 1995,1996,1997,1998 by TriMedia Technologies.       |
 *  |                                                                   |
 *  | This software  is furnished under a license  and may only be used |
 *  | and copied in accordance with the terms  and conditions of such a |
 *  | license  and with  the inclusion of this  copyright notice.  This |
 *  | software or any other copies of this software may not be provided |
 *  | or otherwise  made available  to any other person.  The ownership |
 *  | and title of this software is not transferred.                    |
 *  |                                                                   |
 *  | The information  in this software  is subject  to change  without |
 *  | any  prior notice  and should not be construed as a commitment by |
 *  | TriMedia Technologies.                                            |
 *  |                                                                   |
 *  | This  code  and  information  is  provided  "as is"  without  any |
 *  | warranty of any kind,  either expressed or implied, including but |
 *  | not limited  to the implied warranties  of merchantability and/or |
 *  | fitness for any particular purpose.                               |
 *  +-------------------------------------------------------------------+
 *
 *
 *  Module name              : tmPowerdown.c    1.4
 *
 *  Last update              : 19:40:24 - 00/11/09
 *
 *
 *  Description              : Powerdown library for tm1100 rev1.3
 *                             DO NOT DISTRIBUTE
 *                             
 *                             This function can powerdown ICP and EVO.
 *                             
 *  Revision                 : 
 *
 */

/*-----------------------------includes-------------------------------------*/

#include <tm1/mmio.h>
#include <tm1/tmPowerdown.h>
#include <tm1/tmICPmmio.h>

/*-----------------------------defines--------------------------------------*/

#define VV_CTL              (0x105018)
#define TM_POWERDOWN_VV     (UInt32)(1 << 31)

/*-----------------------------functions------------------------------------*/

tmLibdevErr_t
tmPowerdown(UInt32 units)
{
#ifdef __TCS_tm1__
    extern UInt32 _micro_code_pwdn[];

	/* powerdown this part by default */
	if ((units & TM_POWERDOWN_VV)==0) {
    	MMIO(VV_CTL)  = 0x00000007;
	}

	/* powerdown EVO if EVO bit set */
	if (units & TM_POWERDOWN_EVO) {
    	MMIO(EVO_CTL) = 0x00000080;
	}

	/* powerdown ICP if ICP bit set */
	if (units & TM_POWERDOWN_ICP) { 
        MMIO(ICP_MPC) = (UInt32) _micro_code_pwdn;
#ifdef __LITTLE_ENDIAN__
        MMIO(ICP_SR)  = ICP_BUSY | ICP_LITTLE_ENDIAN;
#else
        MMIO(ICP_SR)  = ICP_BUSY;
#endif
    }
#endif     
    return TMLIBDEV_OK;
}

/*--------------------------------------------------------------------------*/