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
omap4_prcm_mpu_read_inst_reg(s16 inst,u16 reg)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
omap4_prcm_mpu_write_inst_reg(u32 val,s16 inst,u16 reg)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
omap4_prcm_mpu_rmw_inst_reg_bits(u32 mask,u32 bits,s16 inst,s16 reg)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 */
omap2_set_globals_prcm_mpu(void __iomem * prcm_mpu)56 void __init omap2_set_globals_prcm_mpu(void __iomem *prcm_mpu)
57 {
58 prcm_mpu_base.va = prcm_mpu;
59 }
60