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         {
  33                 .range_min = DA9063_REG_PAGE_CON,
  34                 .range_max = DA9063_AD_REG_SECOND_D,
  35         }, {
  36                 .range_min = DA9063_REG_SEQ,
  37                 .range_max = DA9063_REG_ID_32_31,
  38         }, {
  39                 .range_min = DA9063_REG_SEQ_A,
  40                 .range_max = DA9063_REG_AUTO3_LOW,
  41         }, {
  42                 .range_min = DA9063_REG_T_OFFSET,
  43                 .range_max = DA9063_AD_REG_GP_ID_19,
  44         }, {
  45                 .range_min = DA9063_REG_CHIP_ID,
  46                 .range_max = DA9063_REG_CHIP_VARIANT,
  47         },
  48 };
  49
  50 static const struct regmap_range da9063_ad_writeable_ranges[] = {
  51         {
  52                 .range_min = DA9063_REG_PAGE_CON,
  53                 .range_max = DA9063_REG_PAGE_CON,
  54         }, {
  55                 .range_min = DA9063_REG_FAULT_LOG,
  56                 .range_max = DA9063_REG_VSYS_MON,
  57         }, {
  58                 .range_min = DA9063_REG_COUNT_S,
  59                 .range_max = DA9063_AD_REG_ALARM_Y,
  60         }, {
  61                 .range_min = DA9063_REG_SEQ,
  62                 .range_max = DA9063_REG_ID_32_31,
  63         }, {
  64                 .range_min = DA9063_REG_SEQ_A,
  65                 .range_max = DA9063_REG_AUTO3_LOW,
  66         }, {
  67                 .range_min = DA9063_REG_CONFIG_I,
  68                 .range_max = DA9063_AD_REG_MON_REG_4,
  69         }, {
  70                 .range_min = DA9063_AD_REG_GP_ID_0,
  71                 .range_max = DA9063_AD_REG_GP_ID_19,
  72         },
  73 };
  74
  75 static const struct regmap_range da9063_ad_volatile_ranges[] = {
  76         {
  77                 .range_min = DA9063_REG_PAGE_CON,
  78                 .range_max = DA9063_REG_EVENT_D,
  79         }, {
  80                 .range_min = DA9063_REG_CONTROL_A,
  81                 .range_max = DA9063_REG_CONTROL_B,
  82         }, {
  83                 .range_min = DA9063_REG_CONTROL_E,
  84                 .range_max = DA9063_REG_CONTROL_F,
  85         }, {
  86                 .range_min = DA9063_REG_BCORE2_CONT,
  87                 .range_max = DA9063_REG_LDO11_CONT,
  88         }, {
  89                 .range_min = DA9063_REG_DVC_1,
  90                 .range_max = DA9063_REG_ADC_MAN,
  91         }, {
  92                 .range_min = DA9063_REG_ADC_RES_L,
  93                 .range_max = DA9063_AD_REG_SECOND_D,
  94         }, {
  95                 .range_min = DA9063_REG_SEQ,
  96                 .range_max = DA9063_REG_SEQ,
  97         }, {
  98                 .range_min = DA9063_REG_EN_32K,
  99                 .range_max = DA9063_REG_EN_32K,
 100         }, {
 101                 .range_min = DA9063_AD_REG_MON_REG_5,
 102                 .range_max = DA9063_AD_REG_MON_REG_6,
 103         },
 104 };
 105
 106 static const struct regmap_access_table da9063_ad_readable_table = {
 107         .yes_ranges = da9063_ad_readable_ranges,
 108         .n_yes_ranges = ARRAY_SIZE(da9063_ad_readable_ranges),
 109 };
 110
 111 static const struct regmap_access_table da9063_ad_writeable_table = {
 112         .yes_ranges = da9063_ad_writeable_ranges,
 113         .n_yes_ranges = ARRAY_SIZE(da9063_ad_writeable_ranges),
 114 };
 115
 116 static const struct regmap_access_table da9063_ad_volatile_table = {
 117         .yes_ranges = da9063_ad_volatile_ranges,
 118         .n_yes_ranges = ARRAY_SIZE(da9063_ad_volatile_ranges),
 119 };
 120
 121 static const struct regmap_range da9063_bb_readable_ranges[] = {
 122         {
 123                 .range_min = DA9063_REG_PAGE_CON,
 124                 .range_max = DA9063_BB_REG_SECOND_D,
 125         }, {
 126                 .range_min = DA9063_REG_SEQ,
 127                 .range_max = DA9063_REG_ID_32_31,
 128         }, {
 129                 .range_min = DA9063_REG_SEQ_A,
 130                 .range_max = DA9063_REG_AUTO3_LOW,
 131         }, {
 132                 .range_min = DA9063_REG_T_OFFSET,
 133                 .range_max = DA9063_BB_REG_GP_ID_19,
 134         }, {
 135                 .range_min = DA9063_REG_CHIP_ID,
 136                 .range_max = DA9063_REG_CHIP_VARIANT,
 137         },
 138 };
 139
 140 static const struct regmap_range da9063_bb_writeable_ranges[] = {
 141         {
 142                 .range_min = DA9063_REG_PAGE_CON,
 143                 .range_max = DA9063_REG_PAGE_CON,
 144         }, {
 145                 .range_min = DA9063_REG_FAULT_LOG,
 146                 .range_max = DA9063_REG_VSYS_MON,
 147         }, {
 148                 .range_min = DA9063_REG_COUNT_S,
 149                 .range_max = DA9063_BB_REG_ALARM_Y,
 150         }, {
 151                 .range_min = DA9063_REG_SEQ,
 152                 .range_max = DA9063_REG_ID_32_31,
 153         }, {
 154                 .range_min = DA9063_REG_SEQ_A,
 155                 .range_max = DA9063_REG_AUTO3_LOW,
 156         }, {
 157                 .range_min = DA9063_REG_CONFIG_I,
 158                 .range_max = DA9063_BB_REG_MON_REG_4,
 159         }, {
 160                 .range_min = DA9063_BB_REG_GP_ID_0,
 161                 .range_max = DA9063_BB_REG_GP_ID_19,
 162         },
 163 };
 164
 165 static const struct regmap_range da9063_bb_volatile_ranges[] = {
 166         {
 167                 .range_min = DA9063_REG_PAGE_CON,
 168                 .range_max = DA9063_REG_EVENT_D,
 169         }, {
 170                 .range_min = DA9063_REG_CONTROL_A,
 171                 .range_max = DA9063_REG_CONTROL_B,
 172         }, {
 173                 .range_min = DA9063_REG_CONTROL_E,
 174                 .range_max = DA9063_REG_CONTROL_F,
 175         }, {
 176                 .range_min = DA9063_REG_BCORE2_CONT,
 177                 .range_max = DA9063_REG_LDO11_CONT,
 178         }, {
 179                 .range_min = DA9063_REG_DVC_1,
 180                 .range_max = DA9063_REG_ADC_MAN,
 181         }, {
 182                 .range_min = DA9063_REG_ADC_RES_L,
 183                 .range_max = DA9063_BB_REG_SECOND_D,
 184         }, {
 185                 .range_min = DA9063_REG_SEQ,
 186                 .range_max = DA9063_REG_SEQ,
 187         }, {
 188                 .range_min = DA9063_REG_EN_32K,
 189                 .range_max = DA9063_REG_EN_32K,
 190         }, {
 191                 .range_min = DA9063_BB_REG_MON_REG_5,
 192                 .range_max = DA9063_BB_REG_MON_REG_6,
 193         },
 194 };
 195
 196 static const struct regmap_access_table da9063_bb_readable_table = {
 197         .yes_ranges = da9063_bb_readable_ranges,
 198         .n_yes_ranges = ARRAY_SIZE(da9063_bb_readable_ranges),
 199 };
 200
 201 static const struct regmap_access_table da9063_bb_writeable_table = {
 202         .yes_ranges = da9063_bb_writeable_ranges,
 203         .n_yes_ranges = ARRAY_SIZE(da9063_bb_writeable_ranges),
 204 };
 205
 206 static const struct regmap_access_table da9063_bb_volatile_table = {
 207         .yes_ranges = da9063_bb_volatile_ranges,
 208         .n_yes_ranges = ARRAY_SIZE(da9063_bb_volatile_ranges),
 209 };
 210
 211 static const struct regmap_range_cfg da9063_range_cfg[] = {
 212         {
 213                 .range_min = DA9063_REG_PAGE_CON,
 214                 .range_max = DA9063_REG_CHIP_VARIANT,
 215                 .selector_reg = DA9063_REG_PAGE_CON,
 216                 .selector_mask = 1 << DA9063_I2C_PAGE_SEL_SHIFT,
 217                 .selector_shift = DA9063_I2C_PAGE_SEL_SHIFT,
 218                 .window_start = 0,
 219                 .window_len = 256,
 220         }
 221 };
 222
 223 static struct regmap_config da9063_regmap_config = {
 224         .reg_bits = 8,
 225         .val_bits = 8,
 226         .ranges = da9063_range_cfg,
 227         .num_ranges = ARRAY_SIZE(da9063_range_cfg),
 228         .max_register = DA9063_REG_CHIP_VARIANT,
 229
 230         .cache_type = REGCACHE_RBTREE,
 231 };
 232
 233 static const struct of_device_id da9063_dt_ids[] = {
 234         { .compatible = "dlg,da9063", },
 235         { }
 236 };
 237 MODULE_DEVICE_TABLE(of, da9063_dt_ids);
 238 static int da9063_i2c_probe(struct i2c_client *i2c,
 239         const struct i2c_device_id *id)
 240 {
 241         struct da9063 *da9063;
 242         int ret;
 243
 244         da9063 = devm_kzalloc(&i2c->dev, sizeof(struct da9063), GFP_KERNEL);
 245         if (da9063 == NULL)
 246                 return -ENOMEM;
 247
 248         i2c_set_clientdata(i2c, da9063);
 249         da9063->dev = &i2c->dev;
 250         da9063->chip_irq = i2c->irq;
 251
 252         if (da9063->variant_code == PMIC_DA9063_AD) {
 253                 da9063_regmap_config.rd_table = &da9063_ad_readable_table;
 254                 da9063_regmap_config.wr_table = &da9063_ad_writeable_table;
 255                 da9063_regmap_config.volatile_table = &da9063_ad_volatile_table;
 256         } else {
 257                 da9063_regmap_config.rd_table = &da9063_bb_readable_table;
 258                 da9063_regmap_config.wr_table = &da9063_bb_writeable_table;
 259                 da9063_regmap_config.volatile_table = &da9063_bb_volatile_table;
 260         }
 261
 262         da9063->regmap = devm_regmap_init_i2c(i2c, &da9063_regmap_config);
 263         if (IS_ERR(da9063->regmap)) {
 264                 ret = PTR_ERR(da9063->regmap);
 265                 dev_err(da9063->dev, "Failed to allocate register map: %d\n",
 266                         ret);
 267                 return ret;
 268         }
 269
 270         return da9063_device_init(da9063, i2c->irq);
 271 }
 272
 273 static int da9063_i2c_remove(struct i2c_client *i2c)
 274 {
 275         struct da9063 *da9063 = i2c_get_clientdata(i2c);
 276
 277         da9063_device_exit(da9063);
 278
 279         return 0;
 280 }
 281
 282 static const struct i2c_device_id da9063_i2c_id[] = {
 283         {"da9063", PMIC_DA9063},
 284         {},
 285 };
 286 MODULE_DEVICE_TABLE(i2c, da9063_i2c_id);
 287
 288 static struct i2c_driver da9063_i2c_driver = {
 289         .driver = {
 290                 .name = "da9063",
 291                 .of_match_table = of_match_ptr(da9063_dt_ids),
 292         },
 293         .probe    = da9063_i2c_probe,
 294         .remove   = da9063_i2c_remove,
 295         .id_table = da9063_i2c_id,
 296 };
 297
 298 module_i2c_driver(da9063_i2c_driver);