1/* 2 * arch/sh/kernel/cpu/sh4a/hwblk-sh7723.c 3 * 4 * SH7723 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/sh7723.h> 27 28/* SH7723 registers */ 29#define MSTPCR0 0xa4150030 30#define MSTPCR1 0xa4150034 31#define MSTPCR2 0xa4150038 32 33/* SH7723 Power Domains */ 34enum { CORE_AREA, SUB_AREA, CORE_AREA_BM }; 35static struct hwblk_area sh7723_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 sh7723_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_L2C] = HWBLK(MSTPCR0, 28, CORE_AREA), 47 [HWBLK_ILMEM] = HWBLK(MSTPCR0, 27, CORE_AREA), 48 [HWBLK_FPU] = HWBLK(MSTPCR0, 24, CORE_AREA), 49 [HWBLK_INTC] = HWBLK(MSTPCR0, 22, CORE_AREA), 50 [HWBLK_DMAC0] = HWBLK(MSTPCR0, 21, CORE_AREA_BM), 51 [HWBLK_SHYWAY] = HWBLK(MSTPCR0, 20, CORE_AREA), 52 [HWBLK_HUDI] = HWBLK(MSTPCR0, 19, CORE_AREA), 53 [HWBLK_DBG] = HWBLK(MSTPCR0, 18, CORE_AREA), 54 [HWBLK_UBC] = HWBLK(MSTPCR0, 17, CORE_AREA), 55 [HWBLK_SUBC] = HWBLK(MSTPCR0, 16, 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, 11, CORE_AREA), 61 [HWBLK_FLCTL] = HWBLK(MSTPCR0, 10, CORE_AREA), 62 [HWBLK_SCIF0] = HWBLK(MSTPCR0, 9, CORE_AREA), 63 [HWBLK_SCIF1] = HWBLK(MSTPCR0, 8, CORE_AREA), 64 [HWBLK_SCIF2] = HWBLK(MSTPCR0, 7, CORE_AREA), 65 [HWBLK_SCIF3] = HWBLK(MSTPCR0, 6, CORE_AREA), 66 [HWBLK_SCIF4] = HWBLK(MSTPCR0, 5, CORE_AREA), 67 [HWBLK_SCIF5] = HWBLK(MSTPCR0, 4, CORE_AREA), 68 [HWBLK_MSIOF0] = HWBLK(MSTPCR0, 2, CORE_AREA), 69 [HWBLK_MSIOF1] = HWBLK(MSTPCR0, 1, CORE_AREA), 70 [HWBLK_MERAM] = HWBLK(MSTPCR0, 0, CORE_AREA), 71 72 [HWBLK_IIC] = HWBLK(MSTPCR1, 9, CORE_AREA), 73 [HWBLK_RTC] = HWBLK(MSTPCR1, 8, SUB_AREA), 74 75 [HWBLK_ATAPI] = HWBLK(MSTPCR2, 28, CORE_AREA_BM), 76 [HWBLK_ADC] = HWBLK(MSTPCR2, 27, CORE_AREA), 77 [HWBLK_TPU] = HWBLK(MSTPCR2, 25, CORE_AREA), 78 [HWBLK_IRDA] = HWBLK(MSTPCR2, 24, CORE_AREA), 79 [HWBLK_TSIF] = HWBLK(MSTPCR2, 22, CORE_AREA), 80 [HWBLK_ICB] = HWBLK(MSTPCR2, 21, CORE_AREA_BM), 81 [HWBLK_SDHI0] = HWBLK(MSTPCR2, 18, CORE_AREA), 82 [HWBLK_SDHI1] = HWBLK(MSTPCR2, 17, CORE_AREA), 83 [HWBLK_KEYSC] = HWBLK(MSTPCR2, 14, SUB_AREA), 84 [HWBLK_USB] = HWBLK(MSTPCR2, 11, CORE_AREA), 85 [HWBLK_2DG] = HWBLK(MSTPCR2, 10, CORE_AREA_BM), 86 [HWBLK_SIU] = HWBLK(MSTPCR2, 8, CORE_AREA), 87 [HWBLK_VEU2H1] = HWBLK(MSTPCR2, 6, CORE_AREA_BM), 88 [HWBLK_VOU] = HWBLK(MSTPCR2, 5, CORE_AREA_BM), 89 [HWBLK_BEU] = HWBLK(MSTPCR2, 4, CORE_AREA_BM), 90 [HWBLK_CEU] = HWBLK(MSTPCR2, 3, CORE_AREA_BM), 91 [HWBLK_VEU2H0] = HWBLK(MSTPCR2, 2, CORE_AREA_BM), 92 [HWBLK_VPU] = HWBLK(MSTPCR2, 1, CORE_AREA_BM), 93 [HWBLK_LCDC] = HWBLK(MSTPCR2, 0, CORE_AREA_BM), 94}; 95 96static struct hwblk_info sh7723_hwblk_info = { 97 .areas = sh7723_hwblk_area, 98 .nr_areas = ARRAY_SIZE(sh7723_hwblk_area), 99 .hwblks = sh7723_hwblk, 100 .nr_hwblks = ARRAY_SIZE(sh7723_hwblk), 101}; 102 103int arch_hwblk_sleep_mode(void) 104{ 105 if (!sh7723_hwblk_area[CORE_AREA].cnt[HWBLK_CNT_USAGE]) 106 return SUSP_SH_STANDBY | SUSP_SH_SF; 107 108 if (!sh7723_hwblk_area[CORE_AREA_BM].cnt[HWBLK_CNT_USAGE]) 109 return SUSP_SH_SLEEP | SUSP_SH_SF; 110 111 return SUSP_SH_SLEEP; 112} 113 114int __init arch_hwblk_init(void) 115{ 116 return hwblk_register(&sh7723_hwblk_info); 117} 118