drivers/power/axp809.c

   1 /*
   2  * AXP809 driver based on AXP221 driver
   3  *
   4  *
   5  * (C) Copyright 2016 Chen-Yu Tsai <wens@csie.org>
   6  *
   7  * Based on axp221.c
   8  * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com>
   9  * (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl>
  10  *
  11  * SPDX-License-Identifier:     GPL-2.0+
  12  */
  13
  14 #include <common.h>
  15 #include <errno.h>
  16 #include <asm/arch/gpio.h>
  17 #include <asm/arch/pmic_bus.h>
  18 #include <axp_pmic.h>
  19
  20 static u8 axp809_mvolt_to_cfg(int mvolt, int min, int max, int div)
  21 {
  22         if (mvolt < min)
  23                 mvolt = min;
  24         else if (mvolt > max)
  25                 mvolt = max;
  26
  27         return (mvolt - min) / div;
  28 }
  29
  30 int axp_set_dcdc1(unsigned int mvolt)
  31 {
  32         int ret;
  33         u8 cfg = axp809_mvolt_to_cfg(mvolt, 1600, 3400, 100);
  34
  35         if (mvolt == 0)
  36                 return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1,
  37                                         AXP809_OUTPUT_CTRL1_DCDC1_EN);
  38
  39         ret = pmic_bus_write(AXP809_DCDC1_CTRL, cfg);
  40         if (ret)
  41                 return ret;
  42
  43         ret = pmic_bus_setbits(AXP809_OUTPUT_CTRL2,
  44                                AXP809_OUTPUT_CTRL2_DC1SW_EN);
  45         if (ret)
  46                 return ret;
  47
  48         return pmic_bus_setbits(AXP809_OUTPUT_CTRL1,
  49                                 AXP809_OUTPUT_CTRL1_DCDC1_EN);
  50 }
  51
  52 int axp_set_dcdc2(unsigned int mvolt)
  53 {
  54         int ret;
  55         u8 cfg = axp809_mvolt_to_cfg(mvolt, 600, 1540, 20);
  56
  57         if (mvolt == 0)
  58                 return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1,
  59                                         AXP809_OUTPUT_CTRL1_DCDC2_EN);
  60
  61         ret = pmic_bus_write(AXP809_DCDC2_CTRL, cfg);
  62         if (ret)
  63                 return ret;
  64
  65         return pmic_bus_setbits(AXP809_OUTPUT_CTRL1,
  66                                 AXP809_OUTPUT_CTRL1_DCDC2_EN);
  67 }
  68
  69 int axp_set_dcdc3(unsigned int mvolt)
  70 {
  71         int ret;
  72         u8 cfg = axp809_mvolt_to_cfg(mvolt, 600, 1860, 20);
  73
  74         if (mvolt == 0)
  75                 return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1,
  76                                         AXP809_OUTPUT_CTRL1_DCDC3_EN);
  77
  78         ret = pmic_bus_write(AXP809_DCDC3_CTRL, cfg);
  79         if (ret)
  80                 return ret;
  81
  82         return pmic_bus_setbits(AXP809_OUTPUT_CTRL1,
  83                                 AXP809_OUTPUT_CTRL1_DCDC3_EN);
  84 }
  85
  86 int axp_set_dcdc4(unsigned int mvolt)
  87 {
  88         int ret;
  89         u8 cfg = axp809_mvolt_to_cfg(mvolt, 600, 1540, 20);
  90
  91         if (mvolt >= 1540)
  92                 cfg = 0x30 + axp809_mvolt_to_cfg(mvolt, 1800, 2600, 100);
  93
  94         if (mvolt == 0)
  95                 return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1,
  96                                         AXP809_OUTPUT_CTRL1_DCDC4_EN);
  97
  98         ret = pmic_bus_write(AXP809_DCDC5_CTRL, cfg);
  99         if (ret)
 100                 return ret;
 101
 102         return pmic_bus_setbits(AXP809_OUTPUT_CTRL1,
 103                                 AXP809_OUTPUT_CTRL1_DCDC4_EN);
 104 }
 105
 106 int axp_set_dcdc5(unsigned int mvolt)
 107 {
 108         int ret;
 109         u8 cfg = axp809_mvolt_to_cfg(mvolt, 1000, 2550, 50);
 110
 111         if (mvolt == 0)
 112                 return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1,
 113                                         AXP809_OUTPUT_CTRL1_DCDC5_EN);
 114
 115         ret = pmic_bus_write(AXP809_DCDC5_CTRL, cfg);
 116         if (ret)
 117                 return ret;
 118
 119         return pmic_bus_setbits(AXP809_OUTPUT_CTRL1,
 120                                 AXP809_OUTPUT_CTRL1_DCDC5_EN);
 121 }
 122
 123 int axp_set_aldo(int aldo_num, unsigned int mvolt)
 124 {
 125         int ret;
 126         u8 cfg;
 127
 128         if (aldo_num < 1 || aldo_num > 3)
 129                 return -EINVAL;
 130
 131         if (mvolt == 0 && aldo_num == 3)
 132                 return pmic_bus_clrbits(AXP809_OUTPUT_CTRL2,
 133                                         AXP809_OUTPUT_CTRL2_ALDO3_EN);
 134         if (mvolt == 0)
 135                 return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1,
 136                                 AXP809_OUTPUT_CTRL1_ALDO1_EN << (aldo_num - 1));
 137
 138         cfg = axp809_mvolt_to_cfg(mvolt, 700, 3300, 100);
 139         ret = pmic_bus_write(AXP809_ALDO1_CTRL + (aldo_num - 1), cfg);
 140         if (ret)
 141                 return ret;
 142
 143         if (aldo_num == 3)
 144                 return pmic_bus_setbits(AXP809_OUTPUT_CTRL2,
 145                                         AXP809_OUTPUT_CTRL2_ALDO3_EN);
 146         return pmic_bus_setbits(AXP809_OUTPUT_CTRL1,
 147                                 AXP809_OUTPUT_CTRL1_ALDO1_EN << (aldo_num - 1));
 148 }
 149
 150 /* TODO: re-work other AXP drivers to consolidate ALDO functions. */
 151 int axp_set_aldo1(unsigned int mvolt)
 152 {
 153         return axp_set_aldo(1, mvolt);
 154 }
 155
 156 int axp_set_aldo2(unsigned int mvolt)
 157 {
 158         return axp_set_aldo(2, mvolt);
 159 }
 160
 161 int axp_set_aldo3(unsigned int mvolt)
 162 {
 163         return axp_set_aldo(3, mvolt);
 164 }
 165
 166 int axp_set_dldo(int dldo_num, unsigned int mvolt)
 167 {
 168         u8 cfg = axp809_mvolt_to_cfg(mvolt, 700, 3300, 100);
 169         int ret;
 170
 171         if (dldo_num < 1 || dldo_num > 2)
 172                 return -EINVAL;
 173
 174         if (mvolt == 0)
 175                 return pmic_bus_clrbits(AXP809_OUTPUT_CTRL2,
 176                                 AXP809_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1));
 177
 178         if (dldo_num == 1 && mvolt > 3300)
 179                 cfg += 1 + axp809_mvolt_to_cfg(mvolt, 3400, 4200, 200);
 180         ret = pmic_bus_write(AXP809_DLDO1_CTRL + (dldo_num - 1), cfg);
 181         if (ret)
 182                 return ret;
 183
 184         return pmic_bus_setbits(AXP809_OUTPUT_CTRL2,
 185                                 AXP809_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1));
 186 }
 187
 188 int axp_set_eldo(int eldo_num, unsigned int mvolt)
 189 {
 190         int ret;
 191         u8 cfg = axp809_mvolt_to_cfg(mvolt, 700, 3300, 100);
 192
 193         if (eldo_num < 1 || eldo_num > 3)
 194                 return -EINVAL;
 195
 196         if (mvolt == 0)
 197                 return pmic_bus_clrbits(AXP809_OUTPUT_CTRL2,
 198                                 AXP809_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));
 199
 200         ret = pmic_bus_write(AXP809_ELDO1_CTRL + (eldo_num - 1), cfg);
 201         if (ret)
 202                 return ret;
 203
 204         return pmic_bus_setbits(AXP809_OUTPUT_CTRL2,
 205                                 AXP809_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));
 206 }
 207
 208 int axp_set_sw(bool on)
 209 {
 210         if (on)
 211                 return pmic_bus_setbits(AXP809_OUTPUT_CTRL2,
 212                                         AXP809_OUTPUT_CTRL2_SWOUT_EN);
 213
 214         return pmic_bus_clrbits(AXP809_OUTPUT_CTRL2,
 215                                 AXP809_OUTPUT_CTRL2_SWOUT_EN);
 216 }
 217
 218 int axp_init(void)
 219 {
 220         return pmic_bus_init();
 221 }
 222
 223 int do_poweroff(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 224 {
 225         pmic_bus_write(AXP809_SHUTDOWN, AXP809_SHUTDOWN_POWEROFF);
 226
 227         /* infinite loop during shutdown */
 228         while (1) {}
 229
 230         /* not reached */
 231         return 0;
 232 }