LXR linux/arch/arm/mach-omap2/prcm

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * OMAP4 PRCM_MPU module functions
   4 *
   5 * Copyright (C) 2009 Nokia Corporation
   6 * Paul Walmsley
   7 */
   8
   9#include <linux/kernel.h>
  10#include <linux/types.h>
  11#include <linux/errno.h>
  12#include <linux/err.h>
  13#include <linux/io.h>
  14
  15#include "iomap.h"
  16#include "common.h"
  17#include "prcm_mpu44xx.h"
  18#include "cm-regbits-44xx.h"
  19
  20/*
  21 * prcm_mpu_base: the virtual address of the start of the PRCM_MPU IP
  22 *   block registers
  23 */
  24struct omap_domain_base prcm_mpu_base;
  25
  26/* PRCM_MPU low-level functions */
  27
  28u32 omap4_prcm_mpu_read_inst_reg(s16 inst, u16 reg)
  29{
  30        return readl_relaxed(OMAP44XX_PRCM_MPU_REGADDR(inst, reg));
  31}
  32
  33void omap4_prcm_mpu_write_inst_reg(u32 val, s16 inst, u16 reg)
  34{
  35        writel_relaxed(val, OMAP44XX_PRCM_MPU_REGADDR(inst, reg));
  36}
  37
  38u32 omap4_prcm_mpu_rmw_inst_reg_bits(u32 mask, u32 bits, s16 inst, s16 reg)
  39{
  40        u32 v;
  41
  42        v = omap4_prcm_mpu_read_inst_reg(inst, reg);
  43        v &= ~mask;
  44        v |= bits;
  45        omap4_prcm_mpu_write_inst_reg(v, inst, reg);
  46
  47        return v;
  48}
  49
  50/**
  51 * omap2_set_globals_prcm_mpu - set the MPU PRCM base address (for early use)
  52 * @prcm_mpu: PRCM_MPU base virtual address
  53 *
  54 * XXX Will be replaced when the PRM/CM drivers are completed.
  55 */
  56void __init omap2_set_globals_prcm_mpu(void __iomem *prcm_mpu)
  57{
  58        prcm_mpu_base.va = prcm_mpu;
  59}
  60