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); 299