drivers/soc/samsung/exynos3250-pmu.c

   1 /*
   2  * Copyright (c) 2011-2015 Samsung Electronics Co., Ltd.
   3  *              http://www.samsung.com/
   4  *
   5  * EXYNOS3250 - 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 exynos3250_pmu_config[] = {
  18         /* { .offset = offset, .val = { AFTR, W-AFTR, SLEEP } */
  19         { EXYNOS3_ARM_CORE0_SYS_PWR_REG,                { 0x0, 0x0, 0x2} },
  20         { EXYNOS3_DIS_IRQ_ARM_CORE0_LOCAL_SYS_PWR_REG,  { 0x0, 0x0, 0x0} },
  21         { EXYNOS3_DIS_IRQ_ARM_CORE0_CENTRAL_SYS_PWR_REG, { 0x0, 0x0, 0x0} },
  22         { EXYNOS3_ARM_CORE1_SYS_PWR_REG,                { 0x0, 0x0, 0x2} },
  23         { EXYNOS3_DIS_IRQ_ARM_CORE1_LOCAL_SYS_PWR_REG,  { 0x0, 0x0, 0x0} },
  24         { EXYNOS3_DIS_IRQ_ARM_CORE1_CENTRAL_SYS_PWR_REG, { 0x0, 0x0, 0x0} },
  25         { EXYNOS3_ISP_ARM_SYS_PWR_REG,                  { 0x1, 0x0, 0x0} },
  26         { EXYNOS3_DIS_IRQ_ISP_ARM_LOCAL_SYS_PWR_REG,    { 0x0, 0x0, 0x0} },
  27         { EXYNOS3_DIS_IRQ_ISP_ARM_CENTRAL_SYS_PWR_REG,  { 0x0, 0x0, 0x0} },
  28         { EXYNOS3_ARM_COMMON_SYS_PWR_REG,               { 0x0, 0x0, 0x2} },
  29         { EXYNOS3_ARM_L2_SYS_PWR_REG,                   { 0x0, 0x0, 0x3} },
  30         { EXYNOS3_CMU_ACLKSTOP_SYS_PWR_REG,             { 0x1, 0x1, 0x0} },
  31         { EXYNOS3_CMU_SCLKSTOP_SYS_PWR_REG,             { 0x1, 0x1, 0x0} },
  32         { EXYNOS3_CMU_RESET_SYS_PWR_REG,                { 0x1, 0x1, 0x0} },
  33         { EXYNOS3_DRAM_FREQ_DOWN_SYS_PWR_REG,           { 0x1, 0x1, 0x1} },
  34         { EXYNOS3_DDRPHY_DLLOFF_SYS_PWR_REG,            { 0x1, 0x1, 0x1} },
  35         { EXYNOS3_LPDDR_PHY_DLL_LOCK_SYS_PWR_REG,       { 0x1, 0x1, 0x1} },
  36         { EXYNOS3_CMU_ACLKSTOP_COREBLK_SYS_PWR_REG,     { 0x1, 0x0, 0x0} },
  37         { EXYNOS3_CMU_SCLKSTOP_COREBLK_SYS_PWR_REG,     { 0x1, 0x0, 0x0} },
  38         { EXYNOS3_CMU_RESET_COREBLK_SYS_PWR_REG,        { 0x1, 0x1, 0x0} },
  39         { EXYNOS3_APLL_SYSCLK_SYS_PWR_REG,              { 0x1, 0x0, 0x0} },
  40         { EXYNOS3_MPLL_SYSCLK_SYS_PWR_REG,              { 0x1, 0x0, 0x0} },
  41         { EXYNOS3_BPLL_SYSCLK_SYS_PWR_REG,              { 0x1, 0x0, 0x0} },
  42         { EXYNOS3_VPLL_SYSCLK_SYS_PWR_REG,              { 0x1, 0x1, 0x0} },
  43         { EXYNOS3_EPLL_SYSCLK_SYS_PWR_REG,              { 0x1, 0x0, 0x0} },
  44         { EXYNOS3_UPLL_SYSCLK_SYS_PWR_REG,              { 0x1, 0x1, 0x1} },
  45         { EXYNOS3_EPLLUSER_SYSCLK_SYS_PWR_REG,          { 0x1, 0x0, 0x0} },
  46         { EXYNOS3_MPLLUSER_SYSCLK_SYS_PWR_REG,          { 0x1, 0x0, 0x0} },
  47         { EXYNOS3_BPLLUSER_SYSCLK_SYS_PWR_REG,          { 0x1, 0x0, 0x0} },
  48         { EXYNOS3_CMU_CLKSTOP_CAM_SYS_PWR_REG,          { 0x1, 0x0, 0x0} },
  49         { EXYNOS3_CMU_CLKSTOP_MFC_SYS_PWR_REG,          { 0x1, 0x0, 0x0} },
  50         { EXYNOS3_CMU_CLKSTOP_G3D_SYS_PWR_REG,          { 0x1, 0x0, 0x0} },
  51         { EXYNOS3_CMU_CLKSTOP_LCD0_SYS_PWR_REG,         { 0x1, 0x0, 0x0} },
  52         { EXYNOS3_CMU_CLKSTOP_ISP_SYS_PWR_REG,          { 0x1, 0x0, 0x0} },
  53         { EXYNOS3_CMU_CLKSTOP_MAUDIO_SYS_PWR_REG,       { 0x1, 0x0, 0x0} },
  54         { EXYNOS3_CMU_RESET_CAM_SYS_PWR_REG,            { 0x1, 0x0, 0x0} },
  55         { EXYNOS3_CMU_RESET_MFC_SYS_PWR_REG,            { 0x1, 0x0, 0x0} },
  56         { EXYNOS3_CMU_RESET_G3D_SYS_PWR_REG,            { 0x1, 0x0, 0x0} },
  57         { EXYNOS3_CMU_RESET_LCD0_SYS_PWR_REG,           { 0x1, 0x0, 0x0} },
  58         { EXYNOS3_CMU_RESET_ISP_SYS_PWR_REG,            { 0x1, 0x0, 0x0} },
  59         { EXYNOS3_CMU_RESET_MAUDIO_SYS_PWR_REG,         { 0x1, 0x0, 0x0} },
  60         { EXYNOS3_TOP_BUS_SYS_PWR_REG,                  { 0x3, 0x0, 0x0} },
  61         { EXYNOS3_TOP_RETENTION_SYS_PWR_REG,            { 0x1, 0x1, 0x1} },
  62         { EXYNOS3_TOP_PWR_SYS_PWR_REG,                  { 0x3, 0x3, 0x3} },
  63         { EXYNOS3_TOP_BUS_COREBLK_SYS_PWR_REG,          { 0x3, 0x0, 0x0} },
  64         { EXYNOS3_TOP_RETENTION_COREBLK_SYS_PWR_REG,    { 0x1, 0x1, 0x1} },
  65         { EXYNOS3_TOP_PWR_COREBLK_SYS_PWR_REG,          { 0x3, 0x3, 0x3} },
  66         { EXYNOS3_LOGIC_RESET_SYS_PWR_REG,              { 0x1, 0x1, 0x0} },
  67         { EXYNOS3_OSCCLK_GATE_SYS_PWR_REG,              { 0x1, 0x1, 0x1} },
  68         { EXYNOS3_LOGIC_RESET_COREBLK_SYS_PWR_REG,      { 0x1, 0x1, 0x0} },
  69         { EXYNOS3_OSCCLK_GATE_COREBLK_SYS_PWR_REG,      { 0x1, 0x0, 0x1} },
  70         { EXYNOS3_PAD_RETENTION_DRAM_SYS_PWR_REG,       { 0x1, 0x1, 0x0} },
  71         { EXYNOS3_PAD_RETENTION_MAUDIO_SYS_PWR_REG,     { 0x1, 0x1, 0x0} },
  72         { EXYNOS3_PAD_RETENTION_GPIO_SYS_PWR_REG,       { 0x1, 0x1, 0x0} },
  73         { EXYNOS3_PAD_RETENTION_UART_SYS_PWR_REG,       { 0x1, 0x1, 0x0} },
  74         { EXYNOS3_PAD_RETENTION_MMC0_SYS_PWR_REG,       { 0x1, 0x1, 0x0} },
  75         { EXYNOS3_PAD_RETENTION_MMC1_SYS_PWR_REG,       { 0x1, 0x1, 0x0} },
  76         { EXYNOS3_PAD_RETENTION_MMC2_SYS_PWR_REG,       { 0x1, 0x1, 0x0} },
  77         { EXYNOS3_PAD_RETENTION_SPI_SYS_PWR_REG,        { 0x1, 0x1, 0x0} },
  78         { EXYNOS3_PAD_RETENTION_EBIA_SYS_PWR_REG,       { 0x1, 0x1, 0x0} },
  79         { EXYNOS3_PAD_RETENTION_EBIB_SYS_PWR_REG,       { 0x1, 0x1, 0x0} },
  80         { EXYNOS3_PAD_RETENTION_JTAG_SYS_PWR_REG,       { 0x1, 0x1, 0x0} },
  81         { EXYNOS3_PAD_ISOLATION_SYS_PWR_REG,            { 0x1, 0x1, 0x0} },
  82         { EXYNOS3_PAD_ALV_SEL_SYS_PWR_REG,              { 0x1, 0x1, 0x0} },
  83         { EXYNOS3_XUSBXTI_SYS_PWR_REG,                  { 0x1, 0x1, 0x0} },
  84         { EXYNOS3_XXTI_SYS_PWR_REG,                     { 0x1, 0x1, 0x0} },
  85         { EXYNOS3_EXT_REGULATOR_SYS_PWR_REG,            { 0x1, 0x1, 0x0} },
  86         { EXYNOS3_EXT_REGULATOR_COREBLK_SYS_PWR_REG,    { 0x1, 0x1, 0x0} },
  87         { EXYNOS3_GPIO_MODE_SYS_PWR_REG,                { 0x1, 0x1, 0x0} },
  88         { EXYNOS3_GPIO_MODE_MAUDIO_SYS_PWR_REG,         { 0x1, 0x1, 0x0} },
  89         { EXYNOS3_TOP_ASB_RESET_SYS_PWR_REG,            { 0x1, 0x1, 0x0} },
  90         { EXYNOS3_TOP_ASB_ISOLATION_SYS_PWR_REG,        { 0x1, 0x1, 0x0} },
  91         { EXYNOS3_TOP_ASB_RESET_COREBLK_SYS_PWR_REG,    { 0x1, 0x1, 0x0} },
  92         { EXYNOS3_TOP_ASB_ISOLATION_COREBLK_SYS_PWR_REG, { 0x1, 0x1, 0x0} },
  93         { EXYNOS3_CAM_SYS_PWR_REG,                      { 0x7, 0x0, 0x0} },
  94         { EXYNOS3_MFC_SYS_PWR_REG,                      { 0x7, 0x0, 0x0} },
  95         { EXYNOS3_G3D_SYS_PWR_REG,                      { 0x7, 0x0, 0x0} },
  96         { EXYNOS3_LCD0_SYS_PWR_REG,                     { 0x7, 0x0, 0x0} },
  97         { EXYNOS3_ISP_SYS_PWR_REG,                      { 0x7, 0x0, 0x0} },
  98         { EXYNOS3_MAUDIO_SYS_PWR_REG,                   { 0x7, 0x0, 0x0} },
  99         { EXYNOS3_CMU_SYSCLK_ISP_SYS_PWR_REG,           { 0x1, 0x0, 0x0} },
 100         { PMU_TABLE_END,},
 101 };
 102
 103 static unsigned int const exynos3250_list_feed[] = {
 104         EXYNOS3_ARM_CORE_OPTION(0),
 105         EXYNOS3_ARM_CORE_OPTION(1),
 106         EXYNOS3_ARM_CORE_OPTION(2),
 107         EXYNOS3_ARM_CORE_OPTION(3),
 108         EXYNOS3_ARM_COMMON_OPTION,
 109         EXYNOS3_TOP_PWR_OPTION,
 110         EXYNOS3_CORE_TOP_PWR_OPTION,
 111         S5P_CAM_OPTION,
 112         S5P_MFC_OPTION,
 113         S5P_G3D_OPTION,
 114         S5P_LCD0_OPTION,
 115         S5P_ISP_OPTION,
 116 };
 117
 118 static void exynos3250_powerdown_conf_extra(enum sys_powerdown mode)
 119 {
 120         unsigned int i;
 121         unsigned int tmp;
 122
 123         /* Enable only SC_FEEDBACK */
 124         for (i = 0; i < ARRAY_SIZE(exynos3250_list_feed); i++) {
 125                 tmp = pmu_raw_readl(exynos3250_list_feed[i]);
 126                 tmp &= ~(EXYNOS3_OPTION_USE_SC_COUNTER);
 127                 tmp |= EXYNOS3_OPTION_USE_SC_FEEDBACK;
 128                 pmu_raw_writel(tmp, exynos3250_list_feed[i]);
 129         }
 130
 131         if (mode != SYS_SLEEP)
 132                 return;
 133
 134         pmu_raw_writel(XUSBXTI_DURATION, EXYNOS3_XUSBXTI_DURATION);
 135         pmu_raw_writel(XXTI_DURATION, EXYNOS3_XXTI_DURATION);
 136         pmu_raw_writel(EXT_REGULATOR_DURATION, EXYNOS3_EXT_REGULATOR_DURATION);
 137         pmu_raw_writel(EXT_REGULATOR_COREBLK_DURATION,
 138                        EXYNOS3_EXT_REGULATOR_COREBLK_DURATION);
 139 }
 140
 141 static void exynos3250_pmu_init(void)
 142 {
 143         unsigned int value;
 144
 145         /*
 146          * To prevent from issuing new bus request form L2 memory system
 147          * If core status is power down, should be set '1' to L2 power down
 148          */
 149         value = pmu_raw_readl(EXYNOS3_ARM_COMMON_OPTION);
 150         value |= EXYNOS3_OPTION_SKIP_DEACTIVATE_ACEACP_IN_PWDN;
 151         pmu_raw_writel(value, EXYNOS3_ARM_COMMON_OPTION);
 152
 153         /* Enable USE_STANDBY_WFI for all CORE */
 154         pmu_raw_writel(S5P_USE_STANDBY_WFI_ALL, S5P_CENTRAL_SEQ_OPTION);
 155
 156         /*
 157          * Set PSHOLD port for output high
 158          */
 159         value = pmu_raw_readl(S5P_PS_HOLD_CONTROL);
 160         value |= S5P_PS_HOLD_OUTPUT_HIGH;
 161         pmu_raw_writel(value, S5P_PS_HOLD_CONTROL);
 162
 163         /*
 164          * Enable signal for PSHOLD port
 165          */
 166         value = pmu_raw_readl(S5P_PS_HOLD_CONTROL);
 167         value |= S5P_PS_HOLD_EN;
 168         pmu_raw_writel(value, S5P_PS_HOLD_CONTROL);
 169 }
 170
 171 const struct exynos_pmu_data exynos3250_pmu_data = {
 172         .pmu_config     = exynos3250_pmu_config,
 173         .pmu_init       = exynos3250_pmu_init,
 174         .powerdown_conf_extra   = exynos3250_powerdown_conf_extra,
 175 };