uboot/arch/arm/mach-exynos/power.c
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   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright (C) 2012 Samsung Electronics
   4 * Donghwa Lee <dh09.lee@samsung.com>
   5 */
   6
   7#include <common.h>
   8#include <asm/io.h>
   9#include <asm/arch/power.h>
  10
  11static void exynos4_mipi_phy_control(unsigned int dev_index,
  12                                        unsigned int enable)
  13{
  14        struct exynos4_power *pmu =
  15            (struct exynos4_power *)samsung_get_base_power();
  16        unsigned int addr, cfg = 0;
  17
  18        if (dev_index == 0)
  19                addr = (unsigned int)&pmu->mipi_phy0_control;
  20        else
  21                addr = (unsigned int)&pmu->mipi_phy1_control;
  22
  23
  24        cfg = readl(addr);
  25        if (enable)
  26                cfg |= (EXYNOS_MIPI_PHY_MRESETN | EXYNOS_MIPI_PHY_ENABLE);
  27        else
  28                cfg &= ~(EXYNOS_MIPI_PHY_MRESETN | EXYNOS_MIPI_PHY_ENABLE);
  29
  30        writel(cfg, addr);
  31}
  32
  33void set_mipi_phy_ctrl(unsigned int dev_index, unsigned int enable)
  34{
  35        if (cpu_is_exynos4())
  36                exynos4_mipi_phy_control(dev_index, enable);
  37}
  38
  39void exynos5_set_usbhost_phy_ctrl(unsigned int enable)
  40{
  41        struct exynos5_power *power =
  42                (struct exynos5_power *)samsung_get_base_power();
  43
  44        if (enable) {
  45                /* Enabling USBHOST_PHY */
  46                setbits_le32(&power->usbhost_phy_control,
  47                                POWER_USB_HOST_PHY_CTRL_EN);
  48        } else {
  49                /* Disabling USBHOST_PHY */
  50                clrbits_le32(&power->usbhost_phy_control,
  51                                POWER_USB_HOST_PHY_CTRL_EN);
  52        }
  53}
  54
  55void exynos4412_set_usbhost_phy_ctrl(unsigned int enable)
  56{
  57        struct exynos4412_power *power =
  58                (struct exynos4412_power *)samsung_get_base_power();
  59
  60        if (enable) {
  61                /* Enabling USBHOST_PHY */
  62                setbits_le32(&power->usbhost_phy_control,
  63                             POWER_USB_HOST_PHY_CTRL_EN);
  64                setbits_le32(&power->hsic1_phy_control,
  65                             POWER_USB_HOST_PHY_CTRL_EN);
  66                setbits_le32(&power->hsic2_phy_control,
  67                             POWER_USB_HOST_PHY_CTRL_EN);
  68        } else {
  69                /* Disabling USBHOST_PHY */
  70                clrbits_le32(&power->usbhost_phy_control,
  71                             POWER_USB_HOST_PHY_CTRL_EN);
  72                clrbits_le32(&power->hsic1_phy_control,
  73                             POWER_USB_HOST_PHY_CTRL_EN);
  74                clrbits_le32(&power->hsic2_phy_control,
  75                             POWER_USB_HOST_PHY_CTRL_EN);
  76        }
  77}
  78
  79void set_usbhost_phy_ctrl(unsigned int enable)
  80{
  81        if (cpu_is_exynos5())
  82                exynos5_set_usbhost_phy_ctrl(enable);
  83        else if (cpu_is_exynos4())
  84                if (proid_is_exynos4412())
  85                        exynos4412_set_usbhost_phy_ctrl(enable);
  86}
  87
  88static void exynos5_set_usbdrd_phy_ctrl(unsigned int enable)
  89{
  90        struct exynos5_power *power =
  91                (struct exynos5_power *)samsung_get_base_power();
  92
  93        if (enable) {
  94                /* Enabling USBDRD_PHY */
  95                setbits_le32(&power->usbdrd_phy_control,
  96                                POWER_USB_DRD_PHY_CTRL_EN);
  97        } else {
  98                /* Disabling USBDRD_PHY */
  99                clrbits_le32(&power->usbdrd_phy_control,
 100                                POWER_USB_DRD_PHY_CTRL_EN);
 101        }
 102}
 103
 104static void exynos5420_set_usbdev_phy_ctrl(unsigned int enable)
 105{
 106        struct exynos5420_power *power =
 107                (struct exynos5420_power *)samsung_get_base_power();
 108
 109        if (enable) {
 110                /* Enabling USBDEV_PHY */
 111                setbits_le32(&power->usbdev_phy_control,
 112                                POWER_USB_DRD_PHY_CTRL_EN);
 113                setbits_le32(&power->usbdev1_phy_control,
 114                                POWER_USB_DRD_PHY_CTRL_EN);
 115        } else {
 116                /* Disabling USBDEV_PHY */
 117                clrbits_le32(&power->usbdev_phy_control,
 118                                POWER_USB_DRD_PHY_CTRL_EN);
 119                clrbits_le32(&power->usbdev1_phy_control,
 120                                POWER_USB_DRD_PHY_CTRL_EN);
 121        }
 122}
 123
 124void set_usbdrd_phy_ctrl(unsigned int enable)
 125{
 126        if (cpu_is_exynos5()) {
 127                if (proid_is_exynos542x())
 128                        exynos5420_set_usbdev_phy_ctrl(enable);
 129                else
 130                        exynos5_set_usbdrd_phy_ctrl(enable);
 131        }
 132}
 133
 134static void exynos5_dp_phy_control(unsigned int enable)
 135{
 136        unsigned int cfg;
 137        struct exynos5_power *power =
 138            (struct exynos5_power *)samsung_get_base_power();
 139
 140        cfg = readl(&power->dptx_phy_control);
 141        if (enable)
 142                cfg |= EXYNOS_DP_PHY_ENABLE;
 143        else
 144                cfg &= ~EXYNOS_DP_PHY_ENABLE;
 145
 146        writel(cfg, &power->dptx_phy_control);
 147}
 148
 149void exynos_dp_phy_ctrl(unsigned int enable)
 150{
 151        if (cpu_is_exynos5())
 152                exynos5_dp_phy_control(enable);
 153}
 154
 155static void exynos5_set_ps_hold_ctrl(void)
 156{
 157        struct exynos5_power *power =
 158                (struct exynos5_power *)samsung_get_base_power();
 159
 160        /* Set PS-Hold high */
 161        setbits_le32(&power->ps_hold_control,
 162                        EXYNOS_PS_HOLD_CONTROL_DATA_HIGH);
 163}
 164
 165/*
 166 * Set ps_hold data driving value high
 167 * This enables the machine to stay powered on
 168 * after the initial power-on condition goes away
 169 * (e.g. power button).
 170 */
 171void set_ps_hold_ctrl(void)
 172{
 173        if (cpu_is_exynos5())
 174                exynos5_set_ps_hold_ctrl();
 175}
 176
 177
 178static void exynos5_set_xclkout(void)
 179{
 180        struct exynos5_power *power =
 181                (struct exynos5_power *)samsung_get_base_power();
 182
 183        /* use xxti for xclk out */
 184        clrsetbits_le32(&power->pmu_debug, PMU_DEBUG_CLKOUT_SEL_MASK,
 185                                PMU_DEBUG_XXTI);
 186}
 187
 188void set_xclkout(void)
 189{
 190        if (cpu_is_exynos5())
 191                exynos5_set_xclkout();
 192}
 193
 194/* Enables hardware tripping to power off the system when TMU fails */
 195void set_hw_thermal_trip(void)
 196{
 197        if (cpu_is_exynos5()) {
 198                struct exynos5_power *power =
 199                        (struct exynos5_power *)samsung_get_base_power();
 200
 201                /* PS_HOLD_CONTROL register ENABLE_HW_TRIP bit*/
 202                setbits_le32(&power->ps_hold_control, POWER_ENABLE_HW_TRIP);
 203        }
 204}
 205
 206static uint32_t exynos5_get_reset_status(void)
 207{
 208        struct exynos5_power *power =
 209                (struct exynos5_power *)samsung_get_base_power();
 210
 211        return power->inform1;
 212}
 213
 214static uint32_t exynos4_get_reset_status(void)
 215{
 216        struct exynos4_power *power =
 217                (struct exynos4_power *)samsung_get_base_power();
 218
 219        return power->inform1;
 220}
 221
 222uint32_t get_reset_status(void)
 223{
 224        if (cpu_is_exynos5())
 225                return exynos5_get_reset_status();
 226        else
 227                return  exynos4_get_reset_status();
 228}
 229
 230static void exynos5_power_exit_wakeup(void)
 231{
 232        struct exynos5_power *power =
 233                (struct exynos5_power *)samsung_get_base_power();
 234        typedef void (*resume_func)(void);
 235
 236        ((resume_func)power->inform0)();
 237}
 238
 239static void exynos4_power_exit_wakeup(void)
 240{
 241        struct exynos4_power *power =
 242                (struct exynos4_power *)samsung_get_base_power();
 243        typedef void (*resume_func)(void);
 244
 245        ((resume_func)power->inform0)();
 246}
 247
 248void power_exit_wakeup(void)
 249{
 250        if (cpu_is_exynos5())
 251                exynos5_power_exit_wakeup();
 252        else
 253                exynos4_power_exit_wakeup();
 254}
 255
 256unsigned int get_boot_mode(void)
 257{
 258        unsigned int om_pin = samsung_get_base_power();
 259
 260        return readl(om_pin) & OM_PIN_MASK;
 261}
 262