text: /*
   * 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 "iomap.h"
  #include "common.h"
  #include "prcm_mpu44xx.h"
  #include "cm-regbits-44xx.h"
  
  /*
   * prcm_mpu_base: the virtual address of the start of the PRCM_MPU IP
   *   block registers
   */
  void __iomem *prcm_mpu_base;
  
  /* PRCM_MPU low-level functions */
  
  u32 omap4_prcm_mpu_read_inst_reg(s16 inst, u16 reg)
  {
  	return readl_relaxed(OMAP44XX_PRCM_MPU_REGADDR(inst, reg));
  }
  
  void omap4_prcm_mpu_write_inst_reg(u32 val, s16 inst, u16 reg)
  {
  	writel_relaxed(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;
  }
  
  /**
   * omap2_set_globals_prcm_mpu - set the MPU PRCM base address (for early use)
   * @prcm_mpu: PRCM_MPU base virtual address
   *
   * XXX Will be replaced when the PRM/CM drivers are completed.
   */
  void __init omap2_set_globals_prcm_mpu(void __iomem *prcm_mpu)
  {
  	prcm_mpu_base = prcm_mpu;
  }
  