drivers/mfd/da9063-i2c.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /* I2C support for Dialog DA9063
   3  *
   4  * Copyright 2012 Dialog Semiconductor Ltd.
   5  * Copyright 2013 Philipp Zabel, Pengutronix
   6  *
   7  * Author: Krystian Garbaciak, Dialog Semiconductor
   8  */
   9
  10 #include <linux/kernel.h>
  11 #include <linux/module.h>
  12 #include <linux/i2c.h>
  13 #include <linux/regmap.h>
  14 #include <linux/delay.h>
  15 #include <linux/slab.h>
  16 #include <linux/err.h>
  17
  18 #include <linux/mfd/core.h>
  19 #include <linux/mfd/da9063/core.h>
  20 #include <linux/mfd/da9063/registers.h>
  21
  22 #include <linux/of.h>
  23 #include <linux/regulator/of_regulator.h>
  24
  25 static const struct regmap_range da9063_ad_readable_ranges[] = {
  26         regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_AD_REG_SECOND_D),
  27         regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
  28         regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
  29         regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_AD_REG_GP_ID_19),
  30         regmap_reg_range(DA9063_REG_CHIP_ID, DA9063_REG_CHIP_VARIANT),
  31 };
  32
  33 static const struct regmap_range da9063_ad_writeable_ranges[] = {
  34         regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_PAGE_CON),
  35         regmap_reg_range(DA9063_REG_FAULT_LOG, DA9063_REG_VSYS_MON),
  36         regmap_reg_range(DA9063_REG_COUNT_S, DA9063_AD_REG_ALARM_Y),
  37         regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
  38         regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
  39         regmap_reg_range(DA9063_REG_CONFIG_I, DA9063_AD_REG_MON_REG_4),
  40         regmap_reg_range(DA9063_AD_REG_GP_ID_0, DA9063_AD_REG_GP_ID_19),
  41 };
  42
  43 static const struct regmap_range da9063_ad_volatile_ranges[] = {
  44         regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_EVENT_D),
  45         regmap_reg_range(DA9063_REG_CONTROL_A, DA9063_REG_CONTROL_B),
  46         regmap_reg_range(DA9063_REG_CONTROL_E, DA9063_REG_CONTROL_F),
  47         regmap_reg_range(DA9063_REG_BCORE2_CONT, DA9063_REG_LDO11_CONT),
  48         regmap_reg_range(DA9063_REG_DVC_1, DA9063_REG_ADC_MAN),
  49         regmap_reg_range(DA9063_REG_ADC_RES_L, DA9063_AD_REG_SECOND_D),
  50         regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_SEQ),
  51         regmap_reg_range(DA9063_REG_EN_32K, DA9063_REG_EN_32K),
  52         regmap_reg_range(DA9063_AD_REG_MON_REG_5, DA9063_AD_REG_MON_REG_6),
  53 };
  54
  55 static const struct regmap_access_table da9063_ad_readable_table = {
  56         .yes_ranges = da9063_ad_readable_ranges,
  57         .n_yes_ranges = ARRAY_SIZE(da9063_ad_readable_ranges),
  58 };
  59
  60 static const struct regmap_access_table da9063_ad_writeable_table = {
  61         .yes_ranges = da9063_ad_writeable_ranges,
  62         .n_yes_ranges = ARRAY_SIZE(da9063_ad_writeable_ranges),
  63 };
  64
  65 static const struct regmap_access_table da9063_ad_volatile_table = {
  66         .yes_ranges = da9063_ad_volatile_ranges,
  67         .n_yes_ranges = ARRAY_SIZE(da9063_ad_volatile_ranges),
  68 };
  69
  70 static const struct regmap_range da9063_bb_readable_ranges[] = {
  71         regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_BB_REG_SECOND_D),
  72         regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
  73         regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
  74         regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_BB_REG_GP_ID_19),
  75         regmap_reg_range(DA9063_REG_CHIP_ID, DA9063_REG_CHIP_VARIANT),
  76 };
  77
  78 static const struct regmap_range da9063_bb_writeable_ranges[] = {
  79         regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_PAGE_CON),
  80         regmap_reg_range(DA9063_REG_FAULT_LOG, DA9063_REG_VSYS_MON),
  81         regmap_reg_range(DA9063_REG_COUNT_S, DA9063_BB_REG_ALARM_Y),
  82         regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
  83         regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
  84         regmap_reg_range(DA9063_REG_CONFIG_I, DA9063_BB_REG_MON_REG_4),
  85         regmap_reg_range(DA9063_BB_REG_GP_ID_0, DA9063_BB_REG_GP_ID_19),
  86 };
  87
  88 static const struct regmap_range da9063_bb_volatile_ranges[] = {
  89         regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_EVENT_D),
  90         regmap_reg_range(DA9063_REG_CONTROL_A, DA9063_REG_CONTROL_B),
  91         regmap_reg_range(DA9063_REG_CONTROL_E, DA9063_REG_CONTROL_F),
  92         regmap_reg_range(DA9063_REG_BCORE2_CONT, DA9063_REG_LDO11_CONT),
  93         regmap_reg_range(DA9063_REG_DVC_1, DA9063_REG_ADC_MAN),
  94         regmap_reg_range(DA9063_REG_ADC_RES_L, DA9063_BB_REG_SECOND_D),
  95         regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_SEQ),
  96         regmap_reg_range(DA9063_REG_EN_32K, DA9063_REG_EN_32K),
  97         regmap_reg_range(DA9063_BB_REG_MON_REG_5, DA9063_BB_REG_MON_REG_6),
  98 };
  99
 100 static const struct regmap_access_table da9063_bb_readable_table = {
 101         .yes_ranges = da9063_bb_readable_ranges,
 102         .n_yes_ranges = ARRAY_SIZE(da9063_bb_readable_ranges),
 103 };
 104
 105 static const struct regmap_access_table da9063_bb_writeable_table = {
 106         .yes_ranges = da9063_bb_writeable_ranges,
 107         .n_yes_ranges = ARRAY_SIZE(da9063_bb_writeable_ranges),
 108 };
 109
 110 static const struct regmap_access_table da9063_bb_volatile_table = {
 111         .yes_ranges = da9063_bb_volatile_ranges,
 112         .n_yes_ranges = ARRAY_SIZE(da9063_bb_volatile_ranges),
 113 };
 114
 115 static const struct regmap_range da9063l_bb_readable_ranges[] = {
 116         regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_MON_A10_RES),
 117         regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
 118         regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
 119         regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_BB_REG_GP_ID_19),
 120         regmap_reg_range(DA9063_REG_CHIP_ID, DA9063_REG_CHIP_VARIANT),
 121 };
 122
 123 static const struct regmap_range da9063l_bb_writeable_ranges[] = {
 124         regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_PAGE_CON),
 125         regmap_reg_range(DA9063_REG_FAULT_LOG, DA9063_REG_VSYS_MON),
 126         regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
 127         regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
 128         regmap_reg_range(DA9063_REG_CONFIG_I, DA9063_BB_REG_MON_REG_4),
 129         regmap_reg_range(DA9063_BB_REG_GP_ID_0, DA9063_BB_REG_GP_ID_19),
 130 };
 131
 132 static const struct regmap_range da9063l_bb_volatile_ranges[] = {
 133         regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_EVENT_D),
 134         regmap_reg_range(DA9063_REG_CONTROL_A, DA9063_REG_CONTROL_B),
 135         regmap_reg_range(DA9063_REG_CONTROL_E, DA9063_REG_CONTROL_F),
 136         regmap_reg_range(DA9063_REG_BCORE2_CONT, DA9063_REG_LDO11_CONT),
 137         regmap_reg_range(DA9063_REG_DVC_1, DA9063_REG_ADC_MAN),
 138         regmap_reg_range(DA9063_REG_ADC_RES_L, DA9063_REG_MON_A10_RES),
 139         regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_SEQ),
 140         regmap_reg_range(DA9063_REG_EN_32K, DA9063_REG_EN_32K),
 141         regmap_reg_range(DA9063_BB_REG_MON_REG_5, DA9063_BB_REG_MON_REG_6),
 142 };
 143
 144 static const struct regmap_access_table da9063l_bb_readable_table = {
 145         .yes_ranges = da9063l_bb_readable_ranges,
 146         .n_yes_ranges = ARRAY_SIZE(da9063l_bb_readable_ranges),
 147 };
 148
 149 static const struct regmap_access_table da9063l_bb_writeable_table = {
 150         .yes_ranges = da9063l_bb_writeable_ranges,
 151         .n_yes_ranges = ARRAY_SIZE(da9063l_bb_writeable_ranges),
 152 };
 153
 154 static const struct regmap_access_table da9063l_bb_volatile_table = {
 155         .yes_ranges = da9063l_bb_volatile_ranges,
 156         .n_yes_ranges = ARRAY_SIZE(da9063l_bb_volatile_ranges),
 157 };
 158
 159 static const struct regmap_range_cfg da9063_range_cfg[] = {
 160         {
 161                 .range_min = DA9063_REG_PAGE_CON,
 162                 .range_max = DA9063_REG_CHIP_VARIANT,
 163                 .selector_reg = DA9063_REG_PAGE_CON,
 164                 .selector_mask = 1 << DA9063_I2C_PAGE_SEL_SHIFT,
 165                 .selector_shift = DA9063_I2C_PAGE_SEL_SHIFT,
 166                 .window_start = 0,
 167                 .window_len = 256,
 168         }
 169 };
 170
 171 static struct regmap_config da9063_regmap_config = {
 172         .reg_bits = 8,
 173         .val_bits = 8,
 174         .ranges = da9063_range_cfg,
 175         .num_ranges = ARRAY_SIZE(da9063_range_cfg),
 176         .max_register = DA9063_REG_CHIP_VARIANT,
 177
 178         .cache_type = REGCACHE_RBTREE,
 179 };
 180
 181 static const struct of_device_id da9063_dt_ids[] = {
 182         { .compatible = "dlg,da9063", },
 183         { .compatible = "dlg,da9063l", },
 184         { }
 185 };
 186 MODULE_DEVICE_TABLE(of, da9063_dt_ids);
 187 static int da9063_i2c_probe(struct i2c_client *i2c,
 188                             const struct i2c_device_id *id)
 189 {
 190         struct da9063 *da9063;
 191         int ret;
 192
 193         da9063 = devm_kzalloc(&i2c->dev, sizeof(struct da9063), GFP_KERNEL);
 194         if (da9063 == NULL)
 195                 return -ENOMEM;
 196
 197         i2c_set_clientdata(i2c, da9063);
 198         da9063->dev = &i2c->dev;
 199         da9063->chip_irq = i2c->irq;
 200         da9063->type = id->driver_data;
 201
 202         if (da9063->variant_code == PMIC_DA9063_AD) {
 203                 da9063_regmap_config.rd_table = &da9063_ad_readable_table;
 204                 da9063_regmap_config.wr_table = &da9063_ad_writeable_table;
 205                 da9063_regmap_config.volatile_table = &da9063_ad_volatile_table;
 206         } else if (da9063->type == PMIC_TYPE_DA9063L) {
 207                 da9063_regmap_config.rd_table = &da9063l_bb_readable_table;
 208                 da9063_regmap_config.wr_table = &da9063l_bb_writeable_table;
 209                 da9063_regmap_config.volatile_table = &da9063l_bb_volatile_table;
 210         } else {
 211                 da9063_regmap_config.rd_table = &da9063_bb_readable_table;
 212                 da9063_regmap_config.wr_table = &da9063_bb_writeable_table;
 213                 da9063_regmap_config.volatile_table = &da9063_bb_volatile_table;
 214         }
 215
 216         da9063->regmap = devm_regmap_init_i2c(i2c, &da9063_regmap_config);
 217         if (IS_ERR(da9063->regmap)) {
 218                 ret = PTR_ERR(da9063->regmap);
 219                 dev_err(da9063->dev, "Failed to allocate register map: %d\n",
 220                         ret);
 221                 return ret;
 222         }
 223
 224         return da9063_device_init(da9063, i2c->irq);
 225 }
 226
 227 static const struct i2c_device_id da9063_i2c_id[] = {
 228         { "da9063", PMIC_TYPE_DA9063 },
 229         { "da9063l", PMIC_TYPE_DA9063L },
 230         {},
 231 };
 232 MODULE_DEVICE_TABLE(i2c, da9063_i2c_id);
 233
 234 static struct i2c_driver da9063_i2c_driver = {
 235         .driver = {
 236                 .name = "da9063",
 237                 .of_match_table = of_match_ptr(da9063_dt_ids),
 238         },
 239         .probe    = da9063_i2c_probe,
 240         .id_table = da9063_i2c_id,
 241 };
 242
 243 module_i2c_driver(da9063_i2c_driver);