arch/arm/cpu/armv7/exynos/power.c

   1 /*
   2  * Copyright (C) 2012 Samsung Electronics
   3  * Donghwa Lee <dh09.lee@samsung.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <asm/io.h>
  10 #include <asm/arch/power.h>
  11
  12 static void exynos4_mipi_phy_control(unsigned int dev_index,
  13                                         unsigned int enable)
  14 {
  15         struct exynos4_power *pmu =
  16             (struct exynos4_power *)samsung_get_base_power();
  17         unsigned int addr, cfg = 0;
  18
  19         if (dev_index == 0)
  20                 addr = (unsigned int)&pmu->mipi_phy0_control;
  21         else
  22                 addr = (unsigned int)&pmu->mipi_phy1_control;
  23
  24
  25         cfg = readl(addr);
  26         if (enable)
  27                 cfg |= (EXYNOS_MIPI_PHY_MRESETN | EXYNOS_MIPI_PHY_ENABLE);
  28         else
  29                 cfg &= ~(EXYNOS_MIPI_PHY_MRESETN | EXYNOS_MIPI_PHY_ENABLE);
  30
  31         writel(cfg, addr);
  32 }
  33
  34 void set_mipi_phy_ctrl(unsigned int dev_index, unsigned int enable)
  35 {
  36         if (cpu_is_exynos4())
  37                 exynos4_mipi_phy_control(dev_index, enable);
  38 }
  39
  40 void exynos5_set_usbhost_phy_ctrl(unsigned int enable)
  41 {
  42         struct exynos5_power *power =
  43                 (struct exynos5_power *)samsung_get_base_power();
  44
  45         if (enable) {
  46                 /* Enabling USBHOST_PHY */
  47                 setbits_le32(&power->usbhost_phy_control,
  48                                 POWER_USB_HOST_PHY_CTRL_EN);
  49         } else {
  50                 /* Disabling USBHOST_PHY */
  51                 clrbits_le32(&power->usbhost_phy_control,
  52                                 POWER_USB_HOST_PHY_CTRL_EN);
  53         }
  54 }
  55
  56 void exynos4412_set_usbhost_phy_ctrl(unsigned int enable)
  57 {
  58         struct exynos4412_power *power =
  59                 (struct exynos4412_power *)samsung_get_base_power();
  60
  61         if (enable) {
  62                 /* Enabling USBHOST_PHY */
  63                 setbits_le32(&power->usbhost_phy_control,
  64                              POWER_USB_HOST_PHY_CTRL_EN);
  65                 setbits_le32(&power->hsic1_phy_control,
  66                              POWER_USB_HOST_PHY_CTRL_EN);
  67                 setbits_le32(&power->hsic2_phy_control,
  68                              POWER_USB_HOST_PHY_CTRL_EN);
  69         } else {
  70                 /* Disabling USBHOST_PHY */
  71                 clrbits_le32(&power->usbhost_phy_control,
  72                              POWER_USB_HOST_PHY_CTRL_EN);
  73                 clrbits_le32(&power->hsic1_phy_control,
  74                              POWER_USB_HOST_PHY_CTRL_EN);
  75                 clrbits_le32(&power->hsic2_phy_control,
  76                              POWER_USB_HOST_PHY_CTRL_EN);
  77         }
  78 }
  79
  80 void set_usbhost_phy_ctrl(unsigned int enable)
  81 {
  82         if (cpu_is_exynos5())
  83                 exynos5_set_usbhost_phy_ctrl(enable);
  84         else if (cpu_is_exynos4())
  85                 if (proid_is_exynos4412())
  86                         exynos4412_set_usbhost_phy_ctrl(enable);
  87 }
  88
  89 static void exynos5_set_usbdrd_phy_ctrl(unsigned int enable)
  90 {
  91         struct exynos5_power *power =
  92                 (struct exynos5_power *)samsung_get_base_power();
  93
  94         if (enable) {
  95                 /* Enabling USBDRD_PHY */
  96                 setbits_le32(&power->usbdrd_phy_control,
  97                                 POWER_USB_DRD_PHY_CTRL_EN);
  98         } else {
  99                 /* Disabling USBDRD_PHY */
 100                 clrbits_le32(&power->usbdrd_phy_control,
 101                                 POWER_USB_DRD_PHY_CTRL_EN);
 102         }
 103 }
 104
 105 static void exynos5420_set_usbdev_phy_ctrl(unsigned int enable)
 106 {
 107         struct exynos5420_power *power =
 108                 (struct exynos5420_power *)samsung_get_base_power();
 109
 110         if (enable) {
 111                 /* Enabling USBDEV_PHY */
 112                 setbits_le32(&power->usbdev_phy_control,
 113                                 POWER_USB_DRD_PHY_CTRL_EN);
 114                 setbits_le32(&power->usbdev1_phy_control,
 115                                 POWER_USB_DRD_PHY_CTRL_EN);
 116         } else {
 117                 /* Disabling USBDEV_PHY */
 118                 clrbits_le32(&power->usbdev_phy_control,
 119                                 POWER_USB_DRD_PHY_CTRL_EN);
 120                 clrbits_le32(&power->usbdev1_phy_control,
 121                                 POWER_USB_DRD_PHY_CTRL_EN);
 122         }
 123 }
 124
 125 void set_usbdrd_phy_ctrl(unsigned int enable)
 126 {
 127         if (cpu_is_exynos5()) {
 128                 if (proid_is_exynos5420() || proid_is_exynos5800())
 129                         exynos5420_set_usbdev_phy_ctrl(enable);
 130                 else
 131                         exynos5_set_usbdrd_phy_ctrl(enable);
 132         }
 133 }
 134
 135 static void exynos5_dp_phy_control(unsigned int enable)
 136 {
 137         unsigned int cfg;
 138         struct exynos5_power *power =
 139             (struct exynos5_power *)samsung_get_base_power();
 140
 141         cfg = readl(&power->dptx_phy_control);
 142         if (enable)
 143                 cfg |= EXYNOS_DP_PHY_ENABLE;
 144         else
 145                 cfg &= ~EXYNOS_DP_PHY_ENABLE;
 146
 147         writel(cfg, &power->dptx_phy_control);
 148 }
 149
 150 void set_dp_phy_ctrl(unsigned int enable)
 151 {
 152         if (cpu_is_exynos5())
 153                 exynos5_dp_phy_control(enable);
 154 }
 155
 156 static void exynos5_set_ps_hold_ctrl(void)
 157 {
 158         struct exynos5_power *power =
 159                 (struct exynos5_power *)samsung_get_base_power();
 160
 161         /* Set PS-Hold high */
 162         setbits_le32(&power->ps_hold_control,
 163                         EXYNOS_PS_HOLD_CONTROL_DATA_HIGH);
 164 }
 165
 166 /*
 167  * Set ps_hold data driving value high
 168  * This enables the machine to stay powered on
 169  * after the initial power-on condition goes away
 170  * (e.g. power button).
 171  */
 172 void set_ps_hold_ctrl(void)
 173 {
 174         if (cpu_is_exynos5())
 175                 exynos5_set_ps_hold_ctrl();
 176 }
 177
 178
 179 static void exynos5_set_xclkout(void)
 180 {
 181         struct exynos5_power *power =
 182                 (struct exynos5_power *)samsung_get_base_power();
 183
 184         /* use xxti for xclk out */
 185         clrsetbits_le32(&power->pmu_debug, PMU_DEBUG_CLKOUT_SEL_MASK,
 186                                 PMU_DEBUG_XXTI);
 187 }
 188
 189 void set_xclkout(void)
 190 {
 191         if (cpu_is_exynos5())
 192                 exynos5_set_xclkout();
 193 }
 194
 195 /* Enables hardware tripping to power off the system when TMU fails */
 196 void set_hw_thermal_trip(void)
 197 {
 198         if (cpu_is_exynos5()) {
 199                 struct exynos5_power *power =
 200                         (struct exynos5_power *)samsung_get_base_power();
 201
 202                 /* PS_HOLD_CONTROL register ENABLE_HW_TRIP bit*/
 203                 setbits_le32(&power->ps_hold_control, POWER_ENABLE_HW_TRIP);
 204         }
 205 }
 206
 207 static uint32_t exynos5_get_reset_status(void)
 208 {
 209         struct exynos5_power *power =
 210                 (struct exynos5_power *)samsung_get_base_power();
 211
 212         return power->inform1;
 213 }
 214
 215 static uint32_t exynos4_get_reset_status(void)
 216 {
 217         struct exynos4_power *power =
 218                 (struct exynos4_power *)samsung_get_base_power();
 219
 220         return power->inform1;
 221 }
 222
 223 uint32_t get_reset_status(void)
 224 {
 225         if (cpu_is_exynos5())
 226                 return exynos5_get_reset_status();
 227         else
 228                 return  exynos4_get_reset_status();
 229 }
 230
 231 static void exynos5_power_exit_wakeup(void)
 232 {
 233         struct exynos5_power *power =
 234                 (struct exynos5_power *)samsung_get_base_power();
 235         typedef void (*resume_func)(void);
 236
 237         ((resume_func)power->inform0)();
 238 }
 239
 240 static void exynos4_power_exit_wakeup(void)
 241 {
 242         struct exynos4_power *power =
 243                 (struct exynos4_power *)samsung_get_base_power();
 244         typedef void (*resume_func)(void);
 245
 246         ((resume_func)power->inform0)();
 247 }
 248
 249 void power_exit_wakeup(void)
 250 {
 251         if (cpu_is_exynos5())
 252                 exynos5_power_exit_wakeup();
 253         else
 254                 exynos4_power_exit_wakeup();
 255 }
 256
 257 unsigned int get_boot_mode(void)
 258 {
 259         unsigned int om_pin = samsung_get_base_power();
 260
 261         return readl(om_pin) & OM_PIN_MASK;
 262 }