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 }
60