linux-vybrid_public/arch/arm/mach-omap2/prcm_mpu44xx.c

/*
 * OMAP4 PRCM_MPU module functions
 *
 * Copyright (C) 2009 Nokia Corporation
 * Paul Walmsley
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/err.h>
#include <linux/io.h>

#include <plat/common.h>

#include "prcm_mpu44xx.h"
#include "cm-regbits-44xx.h"

/* PRCM_MPU low-level functions */

u32 omap4_prcm_mpu_read_inst_reg(s16 inst, u16 reg)
{
	return __raw_readl(OMAP44XX_PRCM_MPU_REGADDR(inst, reg));
}

void omap4_prcm_mpu_write_inst_reg(u32 val, s16 inst, u16 reg)
{
	__raw_writel(val, OMAP44XX_PRCM_MPU_REGADDR(inst, reg));
}

u32 omap4_prcm_mpu_rmw_inst_reg_bits(u32 mask, u32 bits, s16 inst, s16 reg)
{
	u32 v;

	v = omap4_prcm_mpu_read_inst_reg(inst, reg);
	v &= ~mask;
	v |= bits;
	omap4_prcm_mpu_write_inst_reg(v, inst, reg);

	return v;
}