arch/arm/mach-omap2/prcm_mpu44xx.c

   1 /*
   2  * OMAP4 PRCM_MPU module functions
   3  *
   4  * Copyright (C) 2009 Nokia Corporation
   5  * Paul Walmsley
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/types.h>
  14 #include <linux/errno.h>
  15 #include <linux/err.h>
  16 #include <linux/io.h>
  17
  18 #include "iomap.h"
  19 #include "common.h"
  20 #include "prcm_mpu44xx.h"
  21 #include "cm-regbits-44xx.h"
  22
  23 /* PRCM_MPU low-level functions */
  24
  25 u32 omap4_prcm_mpu_read_inst_reg(s16 inst, u16 reg)
  26 {
  27         return __raw_readl(OMAP44XX_PRCM_MPU_REGADDR(inst, reg));
  28 }
  29
  30 void omap4_prcm_mpu_write_inst_reg(u32 val, s16 inst, u16 reg)
  31 {
  32         __raw_writel(val, OMAP44XX_PRCM_MPU_REGADDR(inst, reg));
  33 }
  34
  35 u32 omap4_prcm_mpu_rmw_inst_reg_bits(u32 mask, u32 bits, s16 inst, s16 reg)
  36 {
  37         u32 v;
  38
  39         v = omap4_prcm_mpu_read_inst_reg(inst, reg);
  40         v &= ~mask;
  41         v |= bits;
  42         omap4_prcm_mpu_write_inst_reg(v, inst, reg);
  43
  44         return v;
  45 }