mirror of https://gitee.com/openkylin/linux.git
67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
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/*
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* OMAP4 PRM instance functions
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*
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* Copyright (C) 2009 Nokia Corporation
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* Paul Walmsley
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/err.h>
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#include <linux/io.h>
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#include <plat/common.h>
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#include "prm44xx.h"
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#include "prminst44xx.h"
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#include "prm-regbits-44xx.h"
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#include "prcm44xx.h"
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#include "prcm_mpu44xx.h"
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static u32 _prm_bases[OMAP4_MAX_PRCM_PARTITIONS] = {
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[OMAP4430_INVALID_PRCM_PARTITION] = 0,
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[OMAP4430_PRM_PARTITION] = OMAP4430_PRM_BASE,
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[OMAP4430_CM1_PARTITION] = 0,
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[OMAP4430_CM2_PARTITION] = 0,
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[OMAP4430_SCRM_PARTITION] = 0,
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[OMAP4430_PRCM_MPU_PARTITION] = OMAP4430_PRCM_MPU_BASE,
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};
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/* Read a register in a PRM instance */
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u32 omap4_prminst_read_inst_reg(u8 part, s16 inst, u16 idx)
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{
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BUG_ON(part >= OMAP4_MAX_PRCM_PARTITIONS ||
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part == OMAP4430_INVALID_PRCM_PARTITION ||
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!_prm_bases[part]);
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return __raw_readl(OMAP2_L4_IO_ADDRESS(_prm_bases[part] + inst +
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idx));
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}
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/* Write into a register in a PRM instance */
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void omap4_prminst_write_inst_reg(u32 val, u8 part, s16 inst, u16 idx)
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{
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BUG_ON(part >= OMAP4_MAX_PRCM_PARTITIONS ||
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part == OMAP4430_INVALID_PRCM_PARTITION ||
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!_prm_bases[part]);
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__raw_writel(val, OMAP2_L4_IO_ADDRESS(_prm_bases[part] + inst + idx));
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}
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/* Read-modify-write a register in PRM. Caller must lock */
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u32 omap4_prminst_rmw_inst_reg_bits(u32 mask, u32 bits, u8 part, s16 inst,
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s16 idx)
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{
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u32 v;
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v = omap4_prminst_read_inst_reg(part, inst, idx);
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v &= ~mask;
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v |= bits;
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omap4_prminst_write_inst_reg(v, part, inst, idx);
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return v;
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}
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