| 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 <krystian.garbaciak@diasemi.com> |
| 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 | static const struct regmap_range da9063_readable_ranges[] = { |
| 29 | { |
| 30 | .range_min = DA9063_REG_PAGE_CON, |
| 31 | .range_max = DA9063_REG_SECOND_D, |
| 32 | }, { |
| 33 | .range_min = DA9063_REG_SEQ, |
| 34 | .range_max = DA9063_REG_ID_32_31, |
| 35 | }, { |
| 36 | .range_min = DA9063_REG_SEQ_A, |
| 37 | .range_max = DA9063_REG_AUTO3_LOW, |
| 38 | }, { |
| 39 | .range_min = DA9063_REG_T_OFFSET, |
| 40 | .range_max = DA9063_REG_GP_ID_19, |
| 41 | }, { |
| 42 | .range_min = DA9063_REG_CHIP_ID, |
| 43 | .range_max = DA9063_REG_CHIP_VARIANT, |
| 44 | }, |
| 45 | }; |
| 46 | |
| 47 | static const struct regmap_range da9063_writeable_ranges[] = { |
| 48 | { |
| 49 | .range_min = DA9063_REG_PAGE_CON, |
| 50 | .range_max = DA9063_REG_PAGE_CON, |
| 51 | }, { |
| 52 | .range_min = DA9063_REG_FAULT_LOG, |
| 53 | .range_max = DA9063_REG_VSYS_MON, |
| 54 | }, { |
| 55 | .range_min = DA9063_REG_COUNT_S, |
| 56 | .range_max = DA9063_REG_ALARM_Y, |
| 57 | }, { |
| 58 | .range_min = DA9063_REG_SEQ, |
| 59 | .range_max = DA9063_REG_ID_32_31, |
| 60 | }, { |
| 61 | .range_min = DA9063_REG_SEQ_A, |
| 62 | .range_max = DA9063_REG_AUTO3_LOW, |
| 63 | }, { |
| 64 | .range_min = DA9063_REG_CONFIG_I, |
| 65 | .range_max = DA9063_REG_MON_REG_4, |
| 66 | }, { |
| 67 | .range_min = DA9063_REG_GP_ID_0, |
| 68 | .range_max = DA9063_REG_GP_ID_19, |
| 69 | }, |
| 70 | }; |
| 71 | |
| 72 | static const struct regmap_range da9063_volatile_ranges[] = { |
| 73 | { |
| 74 | .range_min = DA9063_REG_STATUS_A, |
| 75 | .range_max = DA9063_REG_EVENT_D, |
| 76 | }, { |
| 77 | .range_min = DA9063_REG_CONTROL_F, |
| 78 | .range_max = DA9063_REG_CONTROL_F, |
| 79 | }, { |
| 80 | .range_min = DA9063_REG_ADC_MAN, |
| 81 | .range_max = DA9063_REG_ADC_MAN, |
| 82 | }, { |
| 83 | .range_min = DA9063_REG_ADC_RES_L, |
| 84 | .range_max = DA9063_REG_SECOND_D, |
| 85 | }, { |
| 86 | .range_min = DA9063_REG_MON_REG_5, |
| 87 | .range_max = DA9063_REG_MON_REG_6, |
| 88 | }, |
| 89 | }; |
| 90 | |
| 91 | static const struct regmap_access_table da9063_readable_table = { |
| 92 | .yes_ranges = da9063_readable_ranges, |
| 93 | .n_yes_ranges = ARRAY_SIZE(da9063_readable_ranges), |
| 94 | }; |
| 95 | |
| 96 | static const struct regmap_access_table da9063_writeable_table = { |
| 97 | .yes_ranges = da9063_writeable_ranges, |
| 98 | .n_yes_ranges = ARRAY_SIZE(da9063_writeable_ranges), |
| 99 | }; |
| 100 | |
| 101 | static const struct regmap_access_table da9063_volatile_table = { |
| 102 | .yes_ranges = da9063_volatile_ranges, |
| 103 | .n_yes_ranges = ARRAY_SIZE(da9063_volatile_ranges), |
| 104 | }; |
| 105 | |
| 106 | static const struct regmap_range_cfg da9063_range_cfg[] = { |
| 107 | { |
| 108 | .range_min = DA9063_REG_PAGE_CON, |
| 109 | .range_max = DA9063_REG_CHIP_VARIANT, |
| 110 | .selector_reg = DA9063_REG_PAGE_CON, |
| 111 | .selector_mask = 1 << DA9063_I2C_PAGE_SEL_SHIFT, |
| 112 | .selector_shift = DA9063_I2C_PAGE_SEL_SHIFT, |
| 113 | .window_start = 0, |
| 114 | .window_len = 256, |
| 115 | } |
| 116 | }; |
| 117 | |
| 118 | static struct regmap_config da9063_regmap_config = { |
| 119 | .reg_bits = 8, |
| 120 | .val_bits = 8, |
| 121 | .ranges = da9063_range_cfg, |
| 122 | .num_ranges = ARRAY_SIZE(da9063_range_cfg), |
| 123 | .max_register = DA9063_REG_CHIP_VARIANT, |
| 124 | |
| 125 | .cache_type = REGCACHE_RBTREE, |
| 126 | |
| 127 | .rd_table = &da9063_readable_table, |
| 128 | .wr_table = &da9063_writeable_table, |
| 129 | .volatile_table = &da9063_volatile_table, |
| 130 | }; |
| 131 | |
| 132 | static int da9063_i2c_probe(struct i2c_client *i2c, |
| 133 | const struct i2c_device_id *id) |
| 134 | { |
| 135 | struct da9063 *da9063; |
| 136 | int ret; |
| 137 | |
| 138 | da9063 = devm_kzalloc(&i2c->dev, sizeof(struct da9063), GFP_KERNEL); |
| 139 | if (da9063 == NULL) |
| 140 | return -ENOMEM; |
| 141 | |
| 142 | i2c_set_clientdata(i2c, da9063); |
| 143 | da9063->dev = &i2c->dev; |
| 144 | da9063->chip_irq = i2c->irq; |
| 145 | |
| 146 | da9063->regmap = devm_regmap_init_i2c(i2c, &da9063_regmap_config); |
| 147 | if (IS_ERR(da9063->regmap)) { |
| 148 | ret = PTR_ERR(da9063->regmap); |
| 149 | dev_err(da9063->dev, "Failed to allocate register map: %d\n", |
| 150 | ret); |
| 151 | return ret; |
| 152 | } |
| 153 | |
| 154 | return da9063_device_init(da9063, i2c->irq); |
| 155 | } |
| 156 | |
| 157 | static int da9063_i2c_remove(struct i2c_client *i2c) |
| 158 | { |
| 159 | struct da9063 *da9063 = i2c_get_clientdata(i2c); |
| 160 | |
| 161 | da9063_device_exit(da9063); |
| 162 | |
| 163 | return 0; |
| 164 | } |
| 165 | |
| 166 | static const struct i2c_device_id da9063_i2c_id[] = { |
| 167 | {"da9063", PMIC_DA9063}, |
| 168 | {}, |
| 169 | }; |
| 170 | MODULE_DEVICE_TABLE(i2c, da9063_i2c_id); |
| 171 | |
| 172 | static struct i2c_driver da9063_i2c_driver = { |
| 173 | .driver = { |
| 174 | .name = "da9063", |
| 175 | .owner = THIS_MODULE, |
| 176 | }, |
| 177 | .probe = da9063_i2c_probe, |
| 178 | .remove = da9063_i2c_remove, |
| 179 | .id_table = da9063_i2c_id, |
| 180 | }; |
| 181 | |
| 182 | module_i2c_driver(da9063_i2c_driver); |