git.sur5r.net Git - u-boot/blob - drivers/power/regulator/s5m8767.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2015 Google, Inc
   4  */
   5
   6 #include <common.h>
   7 #include <fdtdec.h>
   8 #include <errno.h>
   9 #include <dm.h>
  10 #include <i2c.h>
  11 #include <power/pmic.h>
  12 #include <power/regulator.h>
  13 #include <power/s5m8767.h>
  14
  15 static const struct sec_voltage_desc buck_v1 = {
  16         .max = 2225000,
  17         .min =  650000,
  18         .step =   6250,
  19 };
  20
  21 static const struct sec_voltage_desc buck_v2 = {
  22         .max = 1600000,
  23         .min =  600000,
  24         .step =   6250,
  25 };
  26
  27 static const struct sec_voltage_desc buck_v3 = {
  28         .max = 3000000,
  29         .min =  750000,
  30         .step =  12500,
  31 };
  32
  33 static const struct sec_voltage_desc ldo_v1 = {
  34         .max = 3950000,
  35         .min =  800000,
  36         .step =  50000,
  37 };
  38
  39 static const struct sec_voltage_desc ldo_v2 = {
  40         .max = 2375000,
  41         .min =  800000,
  42         .step =  25000,
  43 };
  44
  45 static const struct s5m8767_para buck_param[] = {
  46         /*
  47          *            | voltage ----|  | enable -|   voltage
  48          * regnum       addr  bpos mask  addr  on     desc
  49          */
  50         {S5M8767_BUCK1, 0x33, 0x0, 0xff, 0x32, 0x3, &buck_v1},
  51         {S5M8767_BUCK2, 0x35, 0x0, 0xff, 0x34, 0x1, &buck_v2},
  52         {S5M8767_BUCK3, 0x3e, 0x0, 0xff, 0x3d, 0x1, &buck_v2},
  53         {S5M8767_BUCK4, 0x47, 0x0, 0xff, 0x46, 0x1, &buck_v2},
  54         {S5M8767_BUCK5, 0x50, 0x0, 0xff, 0x4f, 0x3, &buck_v1},
  55         {S5M8767_BUCK6, 0x55, 0x0, 0xff, 0x54, 0x3, &buck_v1},
  56         {S5M8767_BUCK7, 0x57, 0x0, 0xff, 0x56, 0x3, &buck_v3},
  57         {S5M8767_BUCK8, 0x59, 0x0, 0xff, 0x58, 0x3, &buck_v3},
  58         {S5M8767_BUCK9, 0x5b, 0x0, 0xff, 0x5a, 0x3, &buck_v3},
  59 };
  60
  61 static const struct s5m8767_para ldo_param[] = {
  62         {S5M8767_LDO1,  0x5c, 0x0, 0x3f, 0x5c, 0x3, &ldo_v2},
  63         {S5M8767_LDO2,  0x5d, 0x0, 0x3f, 0x5d, 0x1, &ldo_v2},
  64         {S5M8767_LDO3,  0x61, 0x0, 0x3f, 0x61, 0x3, &ldo_v1},
  65         {S5M8767_LDO4,  0x62, 0x0, 0x3f, 0x62, 0x3, &ldo_v1},
  66         {S5M8767_LDO5,  0x63, 0x0, 0x3f, 0x63, 0x3, &ldo_v1},
  67         {S5M8767_LDO6,  0x64, 0x0, 0x3f, 0x64, 0x1, &ldo_v2},
  68         {S5M8767_LDO7,  0x65, 0x0, 0x3f, 0x65, 0x1, &ldo_v2},
  69         {S5M8767_LDO8,  0x66, 0x0, 0x3f, 0x66, 0x1, &ldo_v2},
  70         {S5M8767_LDO9,  0x67, 0x0, 0x3f, 0x67, 0x3, &ldo_v1},
  71         {S5M8767_LDO10, 0x68, 0x0, 0x3f, 0x68, 0x1, &ldo_v1},
  72         {S5M8767_LDO11, 0x69, 0x0, 0x3f, 0x69, 0x1, &ldo_v1},
  73         {S5M8767_LDO12, 0x6a, 0x0, 0x3f, 0x6a, 0x1, &ldo_v1},
  74         {S5M8767_LDO13, 0x6b, 0x0, 0x3f, 0x6b, 0x3, &ldo_v1},
  75         {S5M8767_LDO14, 0x6c, 0x0, 0x3f, 0x6c, 0x1, &ldo_v1},
  76         {S5M8767_LDO15, 0x6d, 0x0, 0x3f, 0x6d, 0x1, &ldo_v2},
  77         {S5M8767_LDO16, 0x6e, 0x0, 0x3f, 0x6e, 0x1, &ldo_v1},
  78         {S5M8767_LDO17, 0x6f, 0x0, 0x3f, 0x6f, 0x3, &ldo_v1},
  79         {S5M8767_LDO18, 0x70, 0x0, 0x3f, 0x70, 0x3, &ldo_v1},
  80         {S5M8767_LDO19, 0x71, 0x0, 0x3f, 0x71, 0x3, &ldo_v1},
  81         {S5M8767_LDO20, 0x72, 0x0, 0x3f, 0x72, 0x3, &ldo_v1},
  82         {S5M8767_LDO21, 0x73, 0x0, 0x3f, 0x73, 0x3, &ldo_v1},
  83         {S5M8767_LDO22, 0x74, 0x0, 0x3f, 0x74, 0x3, &ldo_v1},
  84         {S5M8767_LDO23, 0x75, 0x0, 0x3f, 0x75, 0x3, &ldo_v1},
  85         {S5M8767_LDO24, 0x76, 0x0, 0x3f, 0x76, 0x3, &ldo_v1},
  86         {S5M8767_LDO25, 0x77, 0x0, 0x3f, 0x77, 0x3, &ldo_v1},
  87         {S5M8767_LDO26, 0x78, 0x0, 0x3f, 0x78, 0x3, &ldo_v1},
  88         {S5M8767_LDO27, 0x79, 0x0, 0x3f, 0x79, 0x3, &ldo_v1},
  89         {S5M8767_LDO28, 0x7a, 0x0, 0x3f, 0x7a, 0x3, &ldo_v1},
  90 };
  91
  92 enum {
  93         ENABLE_SHIFT    = 6,
  94         ENABLE_MASK     = 3,
  95 };
  96
  97 static int reg_get_value(struct udevice *dev, const struct s5m8767_para *param)
  98 {
  99         const struct sec_voltage_desc *desc;
 100         int ret, uv, val;
 101
 102         ret = pmic_reg_read(dev->parent, param->vol_addr);
 103         if (ret < 0)
 104                 return ret;
 105
 106         desc = param->vol;
 107         val = (ret >> param->vol_bitpos) & param->vol_bitmask;
 108         uv = desc->min + val * desc->step;
 109
 110         return uv;
 111 }
 112
 113 static int reg_set_value(struct udevice *dev, const struct s5m8767_para *param,
 114                          int uv)
 115 {
 116         const struct sec_voltage_desc *desc;
 117         int ret, val;
 118
 119         desc = param->vol;
 120         if (uv < desc->min || uv > desc->max)
 121                 return -EINVAL;
 122         val = (uv - desc->min) / desc->step;
 123         val = (val & param->vol_bitmask) << param->vol_bitpos;
 124         ret = pmic_clrsetbits(dev->parent, param->vol_addr,
 125                               param->vol_bitmask << param->vol_bitpos,
 126                               val);
 127
 128         return ret;
 129 }
 130
 131 static int s5m8767_ldo_probe(struct udevice *dev)
 132 {
 133         struct dm_regulator_uclass_platdata *uc_pdata;
 134
 135         uc_pdata = dev_get_uclass_platdata(dev);
 136
 137         uc_pdata->type = REGULATOR_TYPE_LDO;
 138         uc_pdata->mode_count = 0;
 139
 140         return 0;
 141 }
 142 static int ldo_get_value(struct udevice *dev)
 143 {
 144         int ldo = dev->driver_data;
 145
 146         return reg_get_value(dev, &ldo_param[ldo]);
 147 }
 148
 149 static int ldo_set_value(struct udevice *dev, int uv)
 150 {
 151         int ldo = dev->driver_data;
 152
 153         return reg_set_value(dev, &ldo_param[ldo], uv);
 154 }
 155
 156 static int reg_get_enable(struct udevice *dev, const struct s5m8767_para *param)
 157 {
 158         bool enable;
 159         int ret;
 160
 161         ret = pmic_reg_read(dev->parent, param->reg_enaddr);
 162         if (ret < 0)
 163                 return ret;
 164
 165         enable = (ret >> ENABLE_SHIFT) & ENABLE_MASK;
 166
 167         return enable;
 168 }
 169
 170 static int reg_set_enable(struct udevice *dev, const struct s5m8767_para *param,
 171                           bool enable)
 172 {
 173         int ret;
 174
 175         ret = pmic_reg_read(dev->parent, param->reg_enaddr);
 176         if (ret < 0)
 177                 return ret;
 178
 179         ret = pmic_clrsetbits(dev->parent, param->reg_enaddr,
 180                               ENABLE_MASK << ENABLE_SHIFT,
 181                               enable ? param->reg_enbiton << ENABLE_SHIFT : 0);
 182
 183         return ret;
 184 }
 185
 186 static int ldo_get_enable(struct udevice *dev)
 187 {
 188         int ldo = dev->driver_data;
 189
 190         return reg_get_enable(dev, &ldo_param[ldo]);
 191 }
 192
 193 static int ldo_set_enable(struct udevice *dev, bool enable)
 194 {
 195         int ldo = dev->driver_data;
 196
 197         return reg_set_enable(dev, &ldo_param[ldo], enable);
 198 }
 199
 200 static int s5m8767_buck_probe(struct udevice *dev)
 201 {
 202         struct dm_regulator_uclass_platdata *uc_pdata;
 203
 204         uc_pdata = dev_get_uclass_platdata(dev);
 205
 206         uc_pdata->type = REGULATOR_TYPE_BUCK;
 207         uc_pdata->mode_count = 0;
 208
 209         return 0;
 210 }
 211
 212 static int buck_get_value(struct udevice *dev)
 213 {
 214         int buck = dev->driver_data;
 215
 216         return reg_get_value(dev, &buck_param[buck]);
 217 }
 218
 219 static int buck_set_value(struct udevice *dev, int uv)
 220 {
 221         int buck = dev->driver_data;
 222
 223         return reg_set_value(dev, &buck_param[buck], uv);
 224 }
 225
 226 static int buck_get_enable(struct udevice *dev)
 227 {
 228         int buck = dev->driver_data;
 229
 230         return reg_get_enable(dev, &buck_param[buck]);
 231 }
 232
 233 static int buck_set_enable(struct udevice *dev, bool enable)
 234 {
 235         int buck = dev->driver_data;
 236
 237         return reg_set_enable(dev, &buck_param[buck], enable);
 238 }
 239
 240 static const struct dm_regulator_ops s5m8767_ldo_ops = {
 241         .get_value  = ldo_get_value,
 242         .set_value  = ldo_set_value,
 243         .get_enable = ldo_get_enable,
 244         .set_enable = ldo_set_enable,
 245 };
 246
 247 U_BOOT_DRIVER(s5m8767_ldo) = {
 248         .name = S5M8767_LDO_DRIVER,
 249         .id = UCLASS_REGULATOR,
 250         .ops = &s5m8767_ldo_ops,
 251         .probe = s5m8767_ldo_probe,
 252 };
 253
 254 static const struct dm_regulator_ops s5m8767_buck_ops = {
 255         .get_value  = buck_get_value,
 256         .set_value  = buck_set_value,
 257         .get_enable = buck_get_enable,
 258         .set_enable = buck_set_enable,
 259 };
 260
 261 U_BOOT_DRIVER(s5m8767_buck) = {
 262         .name = S5M8767_BUCK_DRIVER,
 263         .id = UCLASS_REGULATOR,
 264         .ops = &s5m8767_buck_ops,
 265         .probe = s5m8767_buck_probe,
 266 };