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 <plat/common.h> 19 20 #include "prcm_mpu44xx.h" 21 #include "cm-regbits-44xx.h" 22 23 /* PRCM_MPU low-level functions */ 24 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 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 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