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 /* 24 * prcm_mpu_base: the virtual address of the start of the PRCM_MPU IP 25 * block registers 26 */ 27 struct omap_domain_base prcm_mpu_base; 28 29 /* PRCM_MPU low-level functions */ 30 31 u32 omap4_prcm_mpu_read_inst_reg(s16 inst, u16 reg) 32 { 33 return readl_relaxed(OMAP44XX_PRCM_MPU_REGADDR(inst, reg)); 34 } 35 36 void omap4_prcm_mpu_write_inst_reg(u32 val, s16 inst, u16 reg) 37 { 38 writel_relaxed(val, OMAP44XX_PRCM_MPU_REGADDR(inst, reg)); 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 } 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.va = prcm_mpu; 62 } 63