1/* 2 * arch/sh/kernel/cpu/sh4a/hwblk-sh7724.c 3 * 4 * SH7724 hardware block support 5 * 6 * Copyright (C) 2009 Magnus Damm 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 */ 21#include <linux/init.h> 22#include <linux/kernel.h> 23#include <linux/io.h> 24#include <asm/suspend.h> 25#include <asm/hwblk.h> 26#include <cpu/sh7724.h> 27 28/* SH7724 registers */ 29#define MSTPCR0 0xa4150030 30#define MSTPCR1 0xa4150034 31#define MSTPCR2 0xa4150038 32 33/* SH7724 Power Domains */ 34enum { CORE_AREA, SUB_AREA, CORE_AREA_BM }; 35static struct hwblk_area sh7724_hwblk_area[] = { 36 [CORE_AREA] = HWBLK_AREA(0, 0), 37 [CORE_AREA_BM] = HWBLK_AREA(HWBLK_AREA_FLAG_PARENT, CORE_AREA), 38 [SUB_AREA] = HWBLK_AREA(0, 0), 39}; 40 41/* Table mapping HWBLK to Module Stop Bit and Power Domain */ 42static struct hwblk sh7724_hwblk[HWBLK_NR] = { 43 [HWBLK_TLB] = HWBLK(MSTPCR0, 31, CORE_AREA), 44 [HWBLK_IC] = HWBLK(MSTPCR0, 30, CORE_AREA), 45 [HWBLK_OC] = HWBLK(MSTPCR0, 29, CORE_AREA), 46 [HWBLK_RSMEM] = HWBLK(MSTPCR0, 28, CORE_AREA), 47 [HWBLK_ILMEM] = HWBLK(MSTPCR0, 27, CORE_AREA), 48 [HWBLK_L2C] = HWBLK(MSTPCR0, 26, CORE_AREA), 49 [HWBLK_FPU] = HWBLK(MSTPCR0, 24, CORE_AREA), 50 [HWBLK_INTC] = HWBLK(MSTPCR0, 22, CORE_AREA), 51 [HWBLK_DMAC0] = HWBLK(MSTPCR0, 21, CORE_AREA_BM), 52 [HWBLK_SHYWAY] = HWBLK(MSTPCR0, 20, CORE_AREA), 53 [HWBLK_HUDI] = HWBLK(MSTPCR0, 19, CORE_AREA), 54 [HWBLK_DBG] = HWBLK(MSTPCR0, 18, CORE_AREA), 55 [HWBLK_UBC] = HWBLK(MSTPCR0, 17, CORE_AREA), 56 [HWBLK_TMU0] = HWBLK(MSTPCR0, 15, CORE_AREA), 57 [HWBLK_CMT] = HWBLK(MSTPCR0, 14, SUB_AREA), 58 [HWBLK_RWDT] = HWBLK(MSTPCR0, 13, SUB_AREA), 59 [HWBLK_DMAC1] = HWBLK(MSTPCR0, 12, CORE_AREA_BM), 60 [HWBLK_TMU1] = HWBLK(MSTPCR0, 10, CORE_AREA), 61 [HWBLK_SCIF0] = HWBLK(MSTPCR0, 9, CORE_AREA), 62 [HWBLK_SCIF1] = HWBLK(MSTPCR0, 8, CORE_AREA), 63 [HWBLK_SCIF2] = HWBLK(MSTPCR0, 7, CORE_AREA), 64 [HWBLK_SCIF3] = HWBLK(MSTPCR0, 6, CORE_AREA), 65 [HWBLK_SCIF4] = HWBLK(MSTPCR0, 5, CORE_AREA), 66 [HWBLK_SCIF5] = HWBLK(MSTPCR0, 4, CORE_AREA), 67 [HWBLK_MSIOF0] = HWBLK(MSTPCR0, 2, CORE_AREA), 68 [HWBLK_MSIOF1] = HWBLK(MSTPCR0, 1, CORE_AREA), 69 70 [HWBLK_KEYSC] = HWBLK(MSTPCR1, 12, SUB_AREA), 71 [HWBLK_RTC] = HWBLK(MSTPCR1, 11, SUB_AREA), 72 [HWBLK_IIC0] = HWBLK(MSTPCR1, 9, CORE_AREA), 73 [HWBLK_IIC1] = HWBLK(MSTPCR1, 8, CORE_AREA), 74 75 [HWBLK_MMC] = HWBLK(MSTPCR2, 29, CORE_AREA), 76 [HWBLK_ETHER] = HWBLK(MSTPCR2, 28, CORE_AREA_BM), 77 [HWBLK_ATAPI] = HWBLK(MSTPCR2, 26, CORE_AREA_BM), 78 [HWBLK_TPU] = HWBLK(MSTPCR2, 25, CORE_AREA), 79 [HWBLK_IRDA] = HWBLK(MSTPCR2, 24, CORE_AREA), 80 [HWBLK_TSIF] = HWBLK(MSTPCR2, 22, CORE_AREA), 81 [HWBLK_USB1] = HWBLK(MSTPCR2, 21, CORE_AREA), 82 [HWBLK_USB0] = HWBLK(MSTPCR2, 20, CORE_AREA), 83 [HWBLK_2DG] = HWBLK(MSTPCR2, 19, CORE_AREA_BM), 84 [HWBLK_SDHI0] = HWBLK(MSTPCR2, 18, CORE_AREA), 85 [HWBLK_SDHI1] = HWBLK(MSTPCR2, 17, CORE_AREA), 86 [HWBLK_VEU1] = HWBLK(MSTPCR2, 15, CORE_AREA_BM), 87 [HWBLK_CEU1] = HWBLK(MSTPCR2, 13, CORE_AREA_BM), 88 [HWBLK_BEU1] = HWBLK(MSTPCR2, 12, CORE_AREA_BM), 89 [HWBLK_2DDMAC] = HWBLK(MSTPCR2, 10, CORE_AREA_BM), 90 [HWBLK_SPU] = HWBLK(MSTPCR2, 9, CORE_AREA_BM), 91 [HWBLK_JPU] = HWBLK(MSTPCR2, 6, CORE_AREA_BM), 92 [HWBLK_VOU] = HWBLK(MSTPCR2, 5, CORE_AREA_BM), 93 [HWBLK_BEU0] = HWBLK(MSTPCR2, 4, CORE_AREA_BM), 94 [HWBLK_CEU0] = HWBLK(MSTPCR2, 3, CORE_AREA_BM), 95 [HWBLK_VEU0] = HWBLK(MSTPCR2, 2, CORE_AREA_BM), 96 [HWBLK_VPU] = HWBLK(MSTPCR2, 1, CORE_AREA_BM), 97 [HWBLK_LCDC] = HWBLK(MSTPCR2, 0, CORE_AREA_BM), 98}; 99 100static struct hwblk_info sh7724_hwblk_info = { 101 .areas = sh7724_hwblk_area, 102 .nr_areas = ARRAY_SIZE(sh7724_hwblk_area), 103 .hwblks = sh7724_hwblk, 104 .nr_hwblks = ARRAY_SIZE(sh7724_hwblk), 105}; 106 107int arch_hwblk_sleep_mode(void) 108{ 109 if (!sh7724_hwblk_area[CORE_AREA].cnt[HWBLK_CNT_USAGE]) 110 return SUSP_SH_STANDBY | SUSP_SH_SF; 111 112 if (!sh7724_hwblk_area[CORE_AREA_BM].cnt[HWBLK_CNT_USAGE]) 113 return SUSP_SH_SLEEP | SUSP_SH_SF; 114 115 return SUSP_SH_SLEEP; 116} 117 118int __init arch_hwblk_init(void) 119{ 120 return hwblk_register(&sh7724_hwblk_info); 121} 122