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
omap4_prcm_mpu_read_inst_reg(s16 inst,u16 reg)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
omap4_prcm_mpu_write_inst_reg(u32 val,s16 inst,u16 reg)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
omap4_prcm_mpu_rmw_inst_reg_bits(u32 mask,u32 bits,s16 inst,s16 reg)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 }
46