drivers/soc/samsung/exynos5250-pmu.c

   1 /*
   2  * Copyright (c) 2011-2015 Samsung Electronics Co., Ltd.
   3  *              http://www.samsung.com/
   4  *
   5  * EXYNOS5250 - CPU PMU (Power Management Unit) support
   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/soc/samsung/exynos-regs-pmu.h>
  13 #include <linux/soc/samsung/exynos-pmu.h>
  14
  15 #include "exynos-pmu.h"
  16
  17 static const struct exynos_pmu_conf exynos5250_pmu_config[] = {
  18         /* { .offset = offset, .val = { AFTR, LPA, SLEEP } */
  19         { EXYNOS5_ARM_CORE0_SYS_PWR_REG,                { 0x0, 0x0, 0x2} },
  20         { EXYNOS5_DIS_IRQ_ARM_CORE0_LOCAL_SYS_PWR_REG,  { 0x0, 0x0, 0x0} },
  21         { EXYNOS5_DIS_IRQ_ARM_CORE0_CENTRAL_SYS_PWR_REG, { 0x0, 0x0, 0x0} },
  22         { EXYNOS5_ARM_CORE1_SYS_PWR_REG,                { 0x0, 0x0, 0x2} },
  23         { EXYNOS5_DIS_IRQ_ARM_CORE1_LOCAL_SYS_PWR_REG,  { 0x0, 0x0, 0x0} },
  24         { EXYNOS5_DIS_IRQ_ARM_CORE1_CENTRAL_SYS_PWR_REG, { 0x0, 0x0, 0x0} },
  25         { EXYNOS5_FSYS_ARM_SYS_PWR_REG,                 { 0x1, 0x0, 0x0} },
  26         { EXYNOS5_DIS_IRQ_FSYS_ARM_CENTRAL_SYS_PWR_REG, { 0x1, 0x1, 0x1} },
  27         { EXYNOS5_ISP_ARM_SYS_PWR_REG,                  { 0x1, 0x0, 0x0} },
  28         { EXYNOS5_DIS_IRQ_ISP_ARM_LOCAL_SYS_PWR_REG,    { 0x0, 0x0, 0x0} },
  29         { EXYNOS5_DIS_IRQ_ISP_ARM_CENTRAL_SYS_PWR_REG,  { 0x0, 0x0, 0x0} },
  30         { EXYNOS5_ARM_COMMON_SYS_PWR_REG,               { 0x0, 0x0, 0x2} },
  31         { EXYNOS5_ARM_L2_SYS_PWR_REG,                   { 0x3, 0x3, 0x3} },
  32         { EXYNOS_L2_OPTION(0),                          { 0x10, 0x10, 0x0 } },
  33         { EXYNOS5_CMU_ACLKSTOP_SYS_PWR_REG,             { 0x1, 0x0, 0x1} },
  34         { EXYNOS5_CMU_SCLKSTOP_SYS_PWR_REG,             { 0x1, 0x0, 0x1} },
  35         { EXYNOS5_CMU_RESET_SYS_PWR_REG,                { 0x1, 0x1, 0x0} },
  36         { EXYNOS5_CMU_ACLKSTOP_SYSMEM_SYS_PWR_REG,      { 0x1, 0x0, 0x1} },
  37         { EXYNOS5_CMU_SCLKSTOP_SYSMEM_SYS_PWR_REG,      { 0x1, 0x0, 0x1} },
  38         { EXYNOS5_CMU_RESET_SYSMEM_SYS_PWR_REG,         { 0x1, 0x1, 0x0} },
  39         { EXYNOS5_DRAM_FREQ_DOWN_SYS_PWR_REG,           { 0x1, 0x1, 0x1} },
  40         { EXYNOS5_DDRPHY_DLLOFF_SYS_PWR_REG,            { 0x1, 0x1, 0x1} },
  41         { EXYNOS5_DDRPHY_DLLLOCK_SYS_PWR_REG,           { 0x1, 0x1, 0x1} },
  42         { EXYNOS5_APLL_SYSCLK_SYS_PWR_REG,              { 0x1, 0x0, 0x0} },
  43         { EXYNOS5_MPLL_SYSCLK_SYS_PWR_REG,              { 0x1, 0x0, 0x0} },
  44         { EXYNOS5_VPLL_SYSCLK_SYS_PWR_REG,              { 0x1, 0x0, 0x0} },
  45         { EXYNOS5_EPLL_SYSCLK_SYS_PWR_REG,              { 0x1, 0x1, 0x0} },
  46         { EXYNOS5_BPLL_SYSCLK_SYS_PWR_REG,              { 0x1, 0x0, 0x0} },
  47         { EXYNOS5_CPLL_SYSCLK_SYS_PWR_REG,              { 0x1, 0x0, 0x0} },
  48         { EXYNOS5_MPLLUSER_SYSCLK_SYS_PWR_REG,          { 0x1, 0x0, 0x0} },
  49         { EXYNOS5_BPLLUSER_SYSCLK_SYS_PWR_REG,          { 0x1, 0x0, 0x0} },
  50         { EXYNOS5_TOP_BUS_SYS_PWR_REG,                  { 0x3, 0x0, 0x0} },
  51         { EXYNOS5_TOP_RETENTION_SYS_PWR_REG,            { 0x1, 0x0, 0x1} },
  52         { EXYNOS5_TOP_PWR_SYS_PWR_REG,                  { 0x3, 0x0, 0x3} },
  53         { EXYNOS5_TOP_BUS_SYSMEM_SYS_PWR_REG,           { 0x3, 0x0, 0x0} },
  54         { EXYNOS5_TOP_RETENTION_SYSMEM_SYS_PWR_REG,     { 0x1, 0x0, 0x1} },
  55         { EXYNOS5_TOP_PWR_SYSMEM_SYS_PWR_REG,           { 0x3, 0x0, 0x3} },
  56         { EXYNOS5_LOGIC_RESET_SYS_PWR_REG,              { 0x1, 0x1, 0x0} },
  57         { EXYNOS5_OSCCLK_GATE_SYS_PWR_REG,              { 0x1, 0x0, 0x1} },
  58         { EXYNOS5_LOGIC_RESET_SYSMEM_SYS_PWR_REG,       { 0x1, 0x1, 0x0} },
  59         { EXYNOS5_OSCCLK_GATE_SYSMEM_SYS_PWR_REG,       { 0x1, 0x0, 0x1} },
  60         { EXYNOS5_USBOTG_MEM_SYS_PWR_REG,               { 0x3, 0x0, 0x0} },
  61         { EXYNOS5_G2D_MEM_SYS_PWR_REG,                  { 0x3, 0x0, 0x0} },
  62         { EXYNOS5_USBDRD_MEM_SYS_PWR_REG,               { 0x3, 0x0, 0x0} },
  63         { EXYNOS5_SDMMC_MEM_SYS_PWR_REG,                { 0x3, 0x0, 0x0} },
  64         { EXYNOS5_CSSYS_MEM_SYS_PWR_REG,                { 0x3, 0x0, 0x0} },
  65         { EXYNOS5_SECSS_MEM_SYS_PWR_REG,                { 0x3, 0x0, 0x0} },
  66         { EXYNOS5_ROTATOR_MEM_SYS_PWR_REG,              { 0x3, 0x0, 0x0} },
  67         { EXYNOS5_INTRAM_MEM_SYS_PWR_REG,               { 0x3, 0x0, 0x0} },
  68         { EXYNOS5_INTROM_MEM_SYS_PWR_REG,               { 0x3, 0x0, 0x0} },
  69         { EXYNOS5_JPEG_MEM_SYS_PWR_REG,                 { 0x3, 0x0, 0x0} },
  70         { EXYNOS5_JPEG_MEM_OPTION,                      { 0x10, 0x10, 0x0} },
  71         { EXYNOS5_HSI_MEM_SYS_PWR_REG,                  { 0x3, 0x0, 0x0} },
  72         { EXYNOS5_MCUIOP_MEM_SYS_PWR_REG,               { 0x3, 0x0, 0x0} },
  73         { EXYNOS5_SATA_MEM_SYS_PWR_REG,                 { 0x3, 0x0, 0x0} },
  74         { EXYNOS5_PAD_RETENTION_DRAM_SYS_PWR_REG,       { 0x1, 0x0, 0x0} },
  75         { EXYNOS5_PAD_RETENTION_MAU_SYS_PWR_REG,        { 0x1, 0x1, 0x0} },
  76         { EXYNOS5_PAD_RETENTION_GPIO_SYS_PWR_REG,       { 0x1, 0x0, 0x0} },
  77         { EXYNOS5_PAD_RETENTION_UART_SYS_PWR_REG,       { 0x1, 0x0, 0x0} },
  78         { EXYNOS5_PAD_RETENTION_MMCA_SYS_PWR_REG,       { 0x1, 0x0, 0x0} },
  79         { EXYNOS5_PAD_RETENTION_MMCB_SYS_PWR_REG,       { 0x1, 0x0, 0x0} },
  80         { EXYNOS5_PAD_RETENTION_EBIA_SYS_PWR_REG,       { 0x1, 0x0, 0x0} },
  81         { EXYNOS5_PAD_RETENTION_EBIB_SYS_PWR_REG,       { 0x1, 0x0, 0x0} },
  82         { EXYNOS5_PAD_RETENTION_SPI_SYS_PWR_REG,        { 0x1, 0x0, 0x0} },
  83         { EXYNOS5_PAD_RETENTION_GPIO_SYSMEM_SYS_PWR_REG, { 0x1, 0x0, 0x0} },
  84         { EXYNOS5_PAD_ISOLATION_SYS_PWR_REG,            { 0x1, 0x0, 0x0} },
  85         { EXYNOS5_PAD_ISOLATION_SYSMEM_SYS_PWR_REG,     { 0x1, 0x0, 0x0} },
  86         { EXYNOS5_PAD_ALV_SEL_SYS_PWR_REG,              { 0x1, 0x0, 0x0} },
  87         { EXYNOS5_XUSBXTI_SYS_PWR_REG,                  { 0x1, 0x1, 0x1} },
  88         { EXYNOS5_XXTI_SYS_PWR_REG,                     { 0x1, 0x1, 0x0} },
  89         { EXYNOS5_EXT_REGULATOR_SYS_PWR_REG,            { 0x1, 0x1, 0x0} },
  90         { EXYNOS5_GPIO_MODE_SYS_PWR_REG,                { 0x1, 0x0, 0x0} },
  91         { EXYNOS5_GPIO_MODE_SYSMEM_SYS_PWR_REG,         { 0x1, 0x0, 0x0} },
  92         { EXYNOS5_GPIO_MODE_MAU_SYS_PWR_REG,            { 0x1, 0x1, 0x0} },
  93         { EXYNOS5_TOP_ASB_RESET_SYS_PWR_REG,            { 0x1, 0x1, 0x1} },
  94         { EXYNOS5_TOP_ASB_ISOLATION_SYS_PWR_REG,        { 0x1, 0x0, 0x1} },
  95         { EXYNOS5_GSCL_SYS_PWR_REG,                     { 0x7, 0x0, 0x0} },
  96         { EXYNOS5_ISP_SYS_PWR_REG,                      { 0x7, 0x0, 0x0} },
  97         { EXYNOS5_MFC_SYS_PWR_REG,                      { 0x7, 0x0, 0x0} },
  98         { EXYNOS5_G3D_SYS_PWR_REG,                      { 0x7, 0x0, 0x0} },
  99         { EXYNOS5_DISP1_SYS_PWR_REG,                    { 0x7, 0x0, 0x0} },
 100         { EXYNOS5_MAU_SYS_PWR_REG,                      { 0x7, 0x7, 0x0} },
 101         { EXYNOS5_CMU_CLKSTOP_GSCL_SYS_PWR_REG,         { 0x1, 0x0, 0x0} },
 102         { EXYNOS5_CMU_CLKSTOP_ISP_SYS_PWR_REG,          { 0x1, 0x0, 0x0} },
 103         { EXYNOS5_CMU_CLKSTOP_MFC_SYS_PWR_REG,          { 0x1, 0x0, 0x0} },
 104         { EXYNOS5_CMU_CLKSTOP_G3D_SYS_PWR_REG,          { 0x1, 0x0, 0x0} },
 105         { EXYNOS5_CMU_CLKSTOP_DISP1_SYS_PWR_REG,        { 0x1, 0x0, 0x0} },
 106         { EXYNOS5_CMU_CLKSTOP_MAU_SYS_PWR_REG,          { 0x1, 0x1, 0x0} },
 107         { EXYNOS5_CMU_SYSCLK_GSCL_SYS_PWR_REG,          { 0x1, 0x0, 0x0} },
 108         { EXYNOS5_CMU_SYSCLK_ISP_SYS_PWR_REG,           { 0x1, 0x0, 0x0} },
 109         { EXYNOS5_CMU_SYSCLK_MFC_SYS_PWR_REG,           { 0x1, 0x0, 0x0} },
 110         { EXYNOS5_CMU_SYSCLK_G3D_SYS_PWR_REG,           { 0x1, 0x0, 0x0} },
 111         { EXYNOS5_CMU_SYSCLK_DISP1_SYS_PWR_REG,         { 0x1, 0x0, 0x0} },
 112         { EXYNOS5_CMU_SYSCLK_MAU_SYS_PWR_REG,           { 0x1, 0x1, 0x0} },
 113         { EXYNOS5_CMU_RESET_GSCL_SYS_PWR_REG,           { 0x1, 0x0, 0x0} },
 114         { EXYNOS5_CMU_RESET_ISP_SYS_PWR_REG,            { 0x1, 0x0, 0x0} },
 115         { EXYNOS5_CMU_RESET_MFC_SYS_PWR_REG,            { 0x1, 0x0, 0x0} },
 116         { EXYNOS5_CMU_RESET_G3D_SYS_PWR_REG,            { 0x1, 0x0, 0x0} },
 117         { EXYNOS5_CMU_RESET_DISP1_SYS_PWR_REG,          { 0x1, 0x0, 0x0} },
 118         { EXYNOS5_CMU_RESET_MAU_SYS_PWR_REG,            { 0x1, 0x1, 0x0} },
 119         { PMU_TABLE_END,},
 120 };
 121
 122 static unsigned int const exynos5_list_both_cnt_feed[] = {
 123         EXYNOS5_ARM_CORE0_OPTION,
 124         EXYNOS5_ARM_CORE1_OPTION,
 125         EXYNOS5_ARM_COMMON_OPTION,
 126         EXYNOS5_GSCL_OPTION,
 127         EXYNOS5_ISP_OPTION,
 128         EXYNOS5_MFC_OPTION,
 129         EXYNOS5_G3D_OPTION,
 130         EXYNOS5_DISP1_OPTION,
 131         EXYNOS5_MAU_OPTION,
 132         EXYNOS5_TOP_PWR_OPTION,
 133         EXYNOS5_TOP_PWR_SYSMEM_OPTION,
 134 };
 135
 136 static unsigned int const exynos5_list_disable_wfi_wfe[] = {
 137         EXYNOS5_ARM_CORE1_OPTION,
 138         EXYNOS5_FSYS_ARM_OPTION,
 139         EXYNOS5_ISP_ARM_OPTION,
 140 };
 141
 142 static void exynos5250_pmu_init(void)
 143 {
 144         unsigned int value;
 145         /*
 146          * When SYS_WDTRESET is set, watchdog timer reset request
 147          * is ignored by power management unit.
 148          */
 149         value = pmu_raw_readl(EXYNOS5_AUTO_WDTRESET_DISABLE);
 150         value &= ~EXYNOS5_SYS_WDTRESET;
 151         pmu_raw_writel(value, EXYNOS5_AUTO_WDTRESET_DISABLE);
 152
 153         value = pmu_raw_readl(EXYNOS5_MASK_WDTRESET_REQUEST);
 154         value &= ~EXYNOS5_SYS_WDTRESET;
 155         pmu_raw_writel(value, EXYNOS5_MASK_WDTRESET_REQUEST);
 156 }
 157
 158 static void exynos5_powerdown_conf(enum sys_powerdown mode)
 159 {
 160         unsigned int i;
 161         unsigned int tmp;
 162
 163         /*
 164          * Enable both SC_FEEDBACK and SC_COUNTER
 165          */
 166         for (i = 0; i < ARRAY_SIZE(exynos5_list_both_cnt_feed); i++) {
 167                 tmp = pmu_raw_readl(exynos5_list_both_cnt_feed[i]);
 168                 tmp |= (EXYNOS5_USE_SC_FEEDBACK |
 169                         EXYNOS5_USE_SC_COUNTER);
 170                 pmu_raw_writel(tmp, exynos5_list_both_cnt_feed[i]);
 171         }
 172
 173         /*
 174          * SKIP_DEACTIVATE_ACEACP_IN_PWDN_BITFIELD Enable
 175          */
 176         tmp = pmu_raw_readl(EXYNOS5_ARM_COMMON_OPTION);
 177         tmp |= EXYNOS5_SKIP_DEACTIVATE_ACEACP_IN_PWDN;
 178         pmu_raw_writel(tmp, EXYNOS5_ARM_COMMON_OPTION);
 179
 180         /*
 181          * Disable WFI/WFE on XXX_OPTION
 182          */
 183         for (i = 0; i < ARRAY_SIZE(exynos5_list_disable_wfi_wfe); i++) {
 184                 tmp = pmu_raw_readl(exynos5_list_disable_wfi_wfe[i]);
 185                 tmp &= ~(EXYNOS5_OPTION_USE_STANDBYWFE |
 186                          EXYNOS5_OPTION_USE_STANDBYWFI);
 187                 pmu_raw_writel(tmp, exynos5_list_disable_wfi_wfe[i]);
 188         }
 189 }
 190
 191 const struct exynos_pmu_data exynos5250_pmu_data = {
 192         .pmu_config     = exynos5250_pmu_config,
 193         .pmu_init       = exynos5250_pmu_init,
 194         .powerdown_conf = exynos5_powerdown_conf,
 195 };