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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 | ||
ee0839c2 | 18 | #include "iomap.h" |
4e65331c | 19 | #include "common.h" |
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20 | #include "prcm_mpu44xx.h" |
21 | #include "cm-regbits-44xx.h" | |
22 | ||
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23 | /* |
24 | * prcm_mpu_base: the virtual address of the start of the PRCM_MPU IP | |
25 | * block registers | |
26 | */ | |
27 | void __iomem *prcm_mpu_base; | |
28 | ||
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29 | /* PRCM_MPU low-level functions */ |
30 | ||
31 | u32 omap4_prcm_mpu_read_inst_reg(s16 inst, u16 reg) | |
32 | { | |
edfaf05c | 33 | return readl_relaxed(OMAP44XX_PRCM_MPU_REGADDR(inst, reg)); |
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34 | } |
35 | ||
36 | void omap4_prcm_mpu_write_inst_reg(u32 val, s16 inst, u16 reg) | |
37 | { | |
edfaf05c | 38 | writel_relaxed(val, OMAP44XX_PRCM_MPU_REGADDR(inst, reg)); |
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39 | } |
40 | ||
41 | u32 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 | } | |
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52 | |
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 | */ | |
59 | void __init omap2_set_globals_prcm_mpu(void __iomem *prcm_mpu) | |
60 | { | |
61 | prcm_mpu_base = prcm_mpu; | |
62 | } |