drivers/mfd/da9063-i2c.c

   1 /* da9063-i2c.c: Interrupt support for Dialog DA9063
   2  *
   3  * Copyright 2012 Dialog Semiconductor Ltd.
   4  * Copyright 2013 Philipp Zabel, Pengutronix
   5  *
   6  * Author: Krystian Garbaciak, Dialog Semiconductor
   7  *
   8  *  This program is free software; you can redistribute  it and/or modify it
   9  *  under  the terms of  the GNU General  Public License as published by the
  10  *  Free Software Foundation;  either version 2 of the  License, or (at your
  11  *  option) any later version.
  12  *
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/module.h>
  17 #include <linux/i2c.h>
  18 #include <linux/regmap.h>
  19 #include <linux/delay.h>
  20 #include <linux/slab.h>
  21 #include <linux/err.h>
  22
  23 #include <linux/mfd/core.h>
  24 #include <linux/mfd/da9063/core.h>
  25 #include <linux/mfd/da9063/pdata.h>
  26 #include <linux/mfd/da9063/registers.h>
  27
  28 #include <linux/of.h>
  29 #include <linux/regulator/of_regulator.h>
  30
  31 static const struct regmap_range da9063_ad_readable_ranges[] = {
  32         regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_AD_REG_SECOND_D),
  33         regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
  34         regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
  35         regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_AD_REG_GP_ID_19),
  36         regmap_reg_range(DA9063_REG_CHIP_ID, DA9063_REG_CHIP_VARIANT),
  37 };
  38
  39 static const struct regmap_range da9063_ad_writeable_ranges[] = {
  40         regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_PAGE_CON),
  41         regmap_reg_range(DA9063_REG_FAULT_LOG, DA9063_REG_VSYS_MON),
  42         regmap_reg_range(DA9063_REG_COUNT_S, DA9063_AD_REG_ALARM_Y),
  43         regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
  44         regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
  45         regmap_reg_range(DA9063_REG_CONFIG_I, DA9063_AD_REG_MON_REG_4),
  46         regmap_reg_range(DA9063_AD_REG_GP_ID_0, DA9063_AD_REG_GP_ID_19),
  47 };
  48
  49 static const struct regmap_range da9063_ad_volatile_ranges[] = {
  50         regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_EVENT_D),
  51         regmap_reg_range(DA9063_REG_CONTROL_A, DA9063_REG_CONTROL_B),
  52         regmap_reg_range(DA9063_REG_CONTROL_E, DA9063_REG_CONTROL_F),
  53         regmap_reg_range(DA9063_REG_BCORE2_CONT, DA9063_REG_LDO11_CONT),
  54         regmap_reg_range(DA9063_REG_DVC_1, DA9063_REG_ADC_MAN),
  55         regmap_reg_range(DA9063_REG_ADC_RES_L, DA9063_AD_REG_SECOND_D),
  56         regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_SEQ),
  57         regmap_reg_range(DA9063_REG_EN_32K, DA9063_REG_EN_32K),
  58         regmap_reg_range(DA9063_AD_REG_MON_REG_5, DA9063_AD_REG_MON_REG_6),
  59 };
  60
  61 static const struct regmap_access_table da9063_ad_readable_table = {
  62         .yes_ranges = da9063_ad_readable_ranges,
  63         .n_yes_ranges = ARRAY_SIZE(da9063_ad_readable_ranges),
  64 };
  65
  66 static const struct regmap_access_table da9063_ad_writeable_table = {
  67         .yes_ranges = da9063_ad_writeable_ranges,
  68         .n_yes_ranges = ARRAY_SIZE(da9063_ad_writeable_ranges),
  69 };
  70
  71 static const struct regmap_access_table da9063_ad_volatile_table = {
  72         .yes_ranges = da9063_ad_volatile_ranges,
  73         .n_yes_ranges = ARRAY_SIZE(da9063_ad_volatile_ranges),
  74 };
  75
  76 static const struct regmap_range da9063_bb_readable_ranges[] = {
  77         regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_BB_REG_SECOND_D),
  78         regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
  79         regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
  80         regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_BB_REG_GP_ID_19),
  81         regmap_reg_range(DA9063_REG_CHIP_ID, DA9063_REG_CHIP_VARIANT),
  82 };
  83
  84 static const struct regmap_range da9063_bb_writeable_ranges[] = {
  85         regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_PAGE_CON),
  86         regmap_reg_range(DA9063_REG_FAULT_LOG, DA9063_REG_VSYS_MON),
  87         regmap_reg_range(DA9063_REG_COUNT_S, DA9063_BB_REG_ALARM_Y),
  88         regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
  89         regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
  90         regmap_reg_range(DA9063_REG_CONFIG_I, DA9063_BB_REG_MON_REG_4),
  91         regmap_reg_range(DA9063_BB_REG_GP_ID_0, DA9063_BB_REG_GP_ID_19),
  92 };
  93
  94 static const struct regmap_range da9063_bb_volatile_ranges[] = {
  95         regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_EVENT_D),
  96         regmap_reg_range(DA9063_REG_CONTROL_A, DA9063_REG_CONTROL_B),
  97         regmap_reg_range(DA9063_REG_CONTROL_E, DA9063_REG_CONTROL_F),
  98         regmap_reg_range(DA9063_REG_BCORE2_CONT, DA9063_REG_LDO11_CONT),
  99         regmap_reg_range(DA9063_REG_DVC_1, DA9063_REG_ADC_MAN),
 100         regmap_reg_range(DA9063_REG_ADC_RES_L, DA9063_BB_REG_SECOND_D),
 101         regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_SEQ),
 102         regmap_reg_range(DA9063_REG_EN_32K, DA9063_REG_EN_32K),
 103         regmap_reg_range(DA9063_BB_REG_MON_REG_5, DA9063_BB_REG_MON_REG_6),
 104 };
 105
 106 static const struct regmap_access_table da9063_bb_readable_table = {
 107         .yes_ranges = da9063_bb_readable_ranges,
 108         .n_yes_ranges = ARRAY_SIZE(da9063_bb_readable_ranges),
 109 };
 110
 111 static const struct regmap_access_table da9063_bb_writeable_table = {
 112         .yes_ranges = da9063_bb_writeable_ranges,
 113         .n_yes_ranges = ARRAY_SIZE(da9063_bb_writeable_ranges),
 114 };
 115
 116 static const struct regmap_access_table da9063_bb_volatile_table = {
 117         .yes_ranges = da9063_bb_volatile_ranges,
 118         .n_yes_ranges = ARRAY_SIZE(da9063_bb_volatile_ranges),
 119 };
 120
 121 static const struct regmap_range da9063l_bb_readable_ranges[] = {
 122         regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_MON_A10_RES),
 123         regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
 124         regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
 125         regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_BB_REG_GP_ID_19),
 126         regmap_reg_range(DA9063_REG_CHIP_ID, DA9063_REG_CHIP_VARIANT),
 127 };
 128
 129 static const struct regmap_range da9063l_bb_writeable_ranges[] = {
 130         regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_PAGE_CON),
 131         regmap_reg_range(DA9063_REG_FAULT_LOG, DA9063_REG_VSYS_MON),
 132         regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
 133         regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
 134         regmap_reg_range(DA9063_REG_CONFIG_I, DA9063_BB_REG_MON_REG_4),
 135         regmap_reg_range(DA9063_BB_REG_GP_ID_0, DA9063_BB_REG_GP_ID_19),
 136 };
 137
 138 static const struct regmap_range da9063l_bb_volatile_ranges[] = {
 139         regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_EVENT_D),
 140         regmap_reg_range(DA9063_REG_CONTROL_A, DA9063_REG_CONTROL_B),
 141         regmap_reg_range(DA9063_REG_CONTROL_E, DA9063_REG_CONTROL_F),
 142         regmap_reg_range(DA9063_REG_BCORE2_CONT, DA9063_REG_LDO11_CONT),
 143         regmap_reg_range(DA9063_REG_DVC_1, DA9063_REG_ADC_MAN),
 144         regmap_reg_range(DA9063_REG_ADC_RES_L, DA9063_REG_MON_A10_RES),
 145         regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_SEQ),
 146         regmap_reg_range(DA9063_REG_EN_32K, DA9063_REG_EN_32K),
 147         regmap_reg_range(DA9063_BB_REG_MON_REG_5, DA9063_BB_REG_MON_REG_6),
 148 };
 149
 150 static const struct regmap_access_table da9063l_bb_readable_table = {
 151         .yes_ranges = da9063l_bb_readable_ranges,
 152         .n_yes_ranges = ARRAY_SIZE(da9063l_bb_readable_ranges),
 153 };
 154
 155 static const struct regmap_access_table da9063l_bb_writeable_table = {
 156         .yes_ranges = da9063l_bb_writeable_ranges,
 157         .n_yes_ranges = ARRAY_SIZE(da9063l_bb_writeable_ranges),
 158 };
 159
 160 static const struct regmap_access_table da9063l_bb_volatile_table = {
 161         .yes_ranges = da9063l_bb_volatile_ranges,
 162         .n_yes_ranges = ARRAY_SIZE(da9063l_bb_volatile_ranges),
 163 };
 164
 165 static const struct regmap_range_cfg da9063_range_cfg[] = {
 166         {
 167                 .range_min = DA9063_REG_PAGE_CON,
 168                 .range_max = DA9063_REG_CHIP_VARIANT,
 169                 .selector_reg = DA9063_REG_PAGE_CON,
 170                 .selector_mask = 1 << DA9063_I2C_PAGE_SEL_SHIFT,
 171                 .selector_shift = DA9063_I2C_PAGE_SEL_SHIFT,
 172                 .window_start = 0,
 173                 .window_len = 256,
 174         }
 175 };
 176
 177 static struct regmap_config da9063_regmap_config = {
 178         .reg_bits = 8,
 179         .val_bits = 8,
 180         .ranges = da9063_range_cfg,
 181         .num_ranges = ARRAY_SIZE(da9063_range_cfg),
 182         .max_register = DA9063_REG_CHIP_VARIANT,
 183
 184         .cache_type = REGCACHE_RBTREE,
 185 };
 186
 187 static const struct of_device_id da9063_dt_ids[] = {
 188         { .compatible = "dlg,da9063", },
 189         { .compatible = "dlg,da9063l", },
 190         { }
 191 };
 192 MODULE_DEVICE_TABLE(of, da9063_dt_ids);
 193 static int da9063_i2c_probe(struct i2c_client *i2c,
 194                             const struct i2c_device_id *id)
 195 {
 196         struct da9063 *da9063;
 197         int ret;
 198
 199         da9063 = devm_kzalloc(&i2c->dev, sizeof(struct da9063), GFP_KERNEL);
 200         if (da9063 == NULL)
 201                 return -ENOMEM;
 202
 203         i2c_set_clientdata(i2c, da9063);
 204         da9063->dev = &i2c->dev;
 205         da9063->chip_irq = i2c->irq;
 206         da9063->type = id->driver_data;
 207
 208         if (da9063->variant_code == PMIC_DA9063_AD) {
 209                 da9063_regmap_config.rd_table = &da9063_ad_readable_table;
 210                 da9063_regmap_config.wr_table = &da9063_ad_writeable_table;
 211                 da9063_regmap_config.volatile_table = &da9063_ad_volatile_table;
 212         } else if (da9063->type == PMIC_TYPE_DA9063L) {
 213                 da9063_regmap_config.rd_table = &da9063l_bb_readable_table;
 214                 da9063_regmap_config.wr_table = &da9063l_bb_writeable_table;
 215                 da9063_regmap_config.volatile_table = &da9063l_bb_volatile_table;
 216         } else {
 217                 da9063_regmap_config.rd_table = &da9063_bb_readable_table;
 218                 da9063_regmap_config.wr_table = &da9063_bb_writeable_table;
 219                 da9063_regmap_config.volatile_table = &da9063_bb_volatile_table;
 220         }
 221
 222         da9063->regmap = devm_regmap_init_i2c(i2c, &da9063_regmap_config);
 223         if (IS_ERR(da9063->regmap)) {
 224                 ret = PTR_ERR(da9063->regmap);
 225                 dev_err(da9063->dev, "Failed to allocate register map: %d\n",
 226                         ret);
 227                 return ret;
 228         }
 229
 230         return da9063_device_init(da9063, i2c->irq);
 231 }
 232
 233 static const struct i2c_device_id da9063_i2c_id[] = {
 234         { "da9063", PMIC_TYPE_DA9063 },
 235         { "da9063l", PMIC_TYPE_DA9063L },
 236         {},
 237 };
 238 MODULE_DEVICE_TABLE(i2c, da9063_i2c_id);
 239
 240 static struct i2c_driver da9063_i2c_driver = {
 241         .driver = {
 242                 .name = "da9063",
 243                 .of_match_table = of_match_ptr(da9063_dt_ids),
 244         },
 245         .probe    = da9063_i2c_probe,
 246         .id_table = da9063_i2c_id,
 247 };
 248
 249 module_i2c_driver(da9063_i2c_driver);