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