arch/arm/mach-omap2/prcm_mpu44xx.c

   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  */
  24 struct omap_domain_base prcm_mpu_base;
  25
  26 /* PRCM_MPU low-level functions */
  27
  28 u32 omap4_prcm_mpu_read_inst_reg(s16 inst, u16 reg)
  29 {
  30         return readl_relaxed(OMAP44XX_PRCM_MPU_REGADDR(inst, reg));
  31 }
  32
  33 void 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
  38 u32 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  */
  56 void __init omap2_set_globals_prcm_mpu(void __iomem *prcm_mpu)
  57 {
  58         prcm_mpu_base.va = prcm_mpu;
  59 }