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Paul Walmsley2ace8312010-12-21 21:05:14 -07001/*
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
Tony Lindgrenee0839c2012-02-24 10:34:35 -080018#include "iomap.h"
Tony Lindgren4e653312011-11-10 22:45:17 +010019#include "common.h"
Paul Walmsley2ace8312010-12-21 21:05:14 -070020#include "prcm_mpu44xx.h"
21#include "cm-regbits-44xx.h"
22
Paul Walmsleyd9a16f92012-10-29 20:57:39 -060023/*
24 * prcm_mpu_base: the virtual address of the start of the PRCM_MPU IP
25 * block registers
26 */
27void __iomem *prcm_mpu_base;
28
Paul Walmsley2ace8312010-12-21 21:05:14 -070029/* PRCM_MPU low-level functions */
30
31u32 omap4_prcm_mpu_read_inst_reg(s16 inst, u16 reg)
32{
Victor Kamenskyedfaf052014-04-15 20:37:46 +030033 return readl_relaxed(OMAP44XX_PRCM_MPU_REGADDR(inst, reg));
Paul Walmsley2ace8312010-12-21 21:05:14 -070034}
35
36void omap4_prcm_mpu_write_inst_reg(u32 val, s16 inst, u16 reg)
37{
Victor Kamenskyedfaf052014-04-15 20:37:46 +030038 writel_relaxed(val, OMAP44XX_PRCM_MPU_REGADDR(inst, reg));
Paul Walmsley2ace8312010-12-21 21:05:14 -070039}
40
41u32 omap4_prcm_mpu_rmw_inst_reg_bits(u32 mask, u32 bits, s16 inst, s16 reg)
42{
43 u32 v;
44
45 v = omap4_prcm_mpu_read_inst_reg(inst, reg);
46 v &= ~mask;
47 v |= bits;
48 omap4_prcm_mpu_write_inst_reg(v, inst, reg);
49
50 return v;
51}
Paul Walmsleyd9a16f92012-10-29 20:57:39 -060052
53/**
54 * omap2_set_globals_prcm_mpu - set the MPU PRCM base address (for early use)
55 * @prcm_mpu: PRCM_MPU base virtual address
56 *
57 * XXX Will be replaced when the PRM/CM drivers are completed.
58 */
59void __init omap2_set_globals_prcm_mpu(void __iomem *prcm_mpu)
60{
61 prcm_mpu_base = prcm_mpu;
62}