mtk-lk/platform/mt6885/mtk_dbgtop.c

/* Copyright Statement:
*
* This software/firmware and related documentation ("MediaTek Software") are
* protected under relevant copyright laws. The information contained herein
* is confidential and proprietary to MediaTek Inc. and/or its licensors.
* Without the prior written permission of MediaTek inc. and/or its licensors,
* any reproduction, modification, use or disclosure of MediaTek Software,
* and information contained herein, in whole or in part, shall be strictly prohibited.
*/
/* MediaTek Inc. (C) 2015. All rights reserved.
*
* BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
* THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
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*/

#include <platform/mt_reg_base.h>
#include <platform/mt_typedefs.h>
#include <platform/mtk_dbgtop.h>
#include <debug.h>

#define DBGTOPTAG                "[DBGTOP] "
#define DBGTOPLOG(fmt, arg...)   dprintf(INFO, DBGTOPTAG fmt, ##arg)
#define DBGTOPCRI(fmt, arg...)   dprintf(CRITICAL, DBGTOPTAG fmt, ##arg)

int mtk_dbgtop_dram_reserved(int enable)
{
	u32 tmp;

	tmp = DRV_Reg32(MTK_DRM_MODE);
	if (enable)
		tmp |= MTK_DRM_MODE_DDR_RESERVE;
	else
		tmp &= ~MTK_DRM_MODE_DDR_RESERVE;       /* enable ddr_rsv */
	tmp |= (MTK_DRM_MODE_KEY);         /* need key then write is allowed */
	DRV_WriteReg32(MTK_DRM_MODE, tmp);

	return 0;
}