| Paul Walmsley | 2ace831 | 2010-12-21 21:05:14 -0700 | [diff] [blame] | 1 | /* |
| 2 | * OMAP4 PRM instance 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 "prm44xx.h" |
| 21 | #include "prminst44xx.h" |
| 22 | #include "prm-regbits-44xx.h" |
| 23 | #include "prcm44xx.h" |
| 24 | #include "prcm_mpu44xx.h" |
| 25 | |
| 26 | static u32 _prm_bases[OMAP4_MAX_PRCM_PARTITIONS] = { |
| 27 | [OMAP4430_INVALID_PRCM_PARTITION] = 0, |
| 28 | [OMAP4430_PRM_PARTITION] = OMAP4430_PRM_BASE, |
| 29 | [OMAP4430_CM1_PARTITION] = 0, |
| 30 | [OMAP4430_CM2_PARTITION] = 0, |
| 31 | [OMAP4430_SCRM_PARTITION] = 0, |
| 32 | [OMAP4430_PRCM_MPU_PARTITION] = OMAP4430_PRCM_MPU_BASE, |
| 33 | }; |
| 34 | |
| 35 | /* Read a register in a PRM instance */ |
| 36 | u32 omap4_prminst_read_inst_reg(u8 part, s16 inst, u16 idx) |
| 37 | { |
| 38 | BUG_ON(part >= OMAP4_MAX_PRCM_PARTITIONS || |
| 39 | part == OMAP4430_INVALID_PRCM_PARTITION || |
| 40 | !_prm_bases[part]); |
| 41 | return __raw_readl(OMAP2_L4_IO_ADDRESS(_prm_bases[part] + inst + |
| 42 | idx)); |
| 43 | } |
| 44 | |
| 45 | /* Write into a register in a PRM instance */ |
| 46 | void omap4_prminst_write_inst_reg(u32 val, u8 part, s16 inst, u16 idx) |
| 47 | { |
| 48 | BUG_ON(part >= OMAP4_MAX_PRCM_PARTITIONS || |
| 49 | part == OMAP4430_INVALID_PRCM_PARTITION || |
| 50 | !_prm_bases[part]); |
| 51 | __raw_writel(val, OMAP2_L4_IO_ADDRESS(_prm_bases[part] + inst + idx)); |
| 52 | } |
| 53 | |
| 54 | /* Read-modify-write a register in PRM. Caller must lock */ |
| 55 | u32 omap4_prminst_rmw_inst_reg_bits(u32 mask, u32 bits, u8 part, s16 inst, |
| 56 | s16 idx) |
| 57 | { |
| 58 | u32 v; |
| 59 | |
| 60 | v = omap4_prminst_read_inst_reg(part, inst, idx); |
| 61 | v &= ~mask; |
| 62 | v |= bits; |
| 63 | omap4_prminst_write_inst_reg(v, part, inst, idx); |
| 64 | |
| 65 | return v; |
| 66 | } |