Thomas Gleixner | 2874c5f | 2019-05-27 08:55:01 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
Mark Brown | dec38b5 | 2014-09-06 01:11:12 +0100 | [diff] [blame] | 2 | /* |
| 3 | * isl9305 - Intersil ISL9305 DCDC regulator |
| 4 | * |
| 5 | * Copyright 2014 Linaro Ltd |
| 6 | * |
| 7 | * Author: Mark Brown <broonie@kernel.org> |
Mark Brown | dec38b5 | 2014-09-06 01:11:12 +0100 | [diff] [blame] | 8 | */ |
| 9 | |
| 10 | #include <linux/module.h> |
| 11 | #include <linux/err.h> |
| 12 | #include <linux/i2c.h> |
| 13 | #include <linux/of.h> |
| 14 | #include <linux/platform_data/isl9305.h> |
| 15 | #include <linux/regmap.h> |
| 16 | #include <linux/regulator/driver.h> |
| 17 | #include <linux/regulator/of_regulator.h> |
| 18 | #include <linux/slab.h> |
| 19 | |
| 20 | /* |
| 21 | * Registers |
| 22 | */ |
| 23 | #define ISL9305_DCD1OUT 0x0 |
| 24 | #define ISL9305_DCD2OUT 0x1 |
| 25 | #define ISL9305_LDO1OUT 0x2 |
| 26 | #define ISL9305_LDO2OUT 0x3 |
| 27 | #define ISL9305_DCD_PARAMETER 0x4 |
| 28 | #define ISL9305_SYSTEM_PARAMETER 0x5 |
| 29 | #define ISL9305_DCD_SRCTL 0x6 |
| 30 | |
| 31 | #define ISL9305_MAX_REG ISL9305_DCD_SRCTL |
| 32 | |
| 33 | /* |
| 34 | * DCD_PARAMETER |
| 35 | */ |
| 36 | #define ISL9305_DCD_PHASE 0x40 |
| 37 | #define ISL9305_DCD2_ULTRA 0x20 |
| 38 | #define ISL9305_DCD1_ULTRA 0x10 |
| 39 | #define ISL9305_DCD2_BLD 0x08 |
| 40 | #define ISL9305_DCD1_BLD 0x04 |
| 41 | #define ISL9305_DCD2_MODE 0x02 |
| 42 | #define ISL9305_DCD1_MODE 0x01 |
| 43 | |
| 44 | /* |
| 45 | * SYSTEM_PARAMETER |
| 46 | */ |
| 47 | #define ISL9305_I2C_EN 0x40 |
| 48 | #define ISL9305_DCDPOR_MASK 0x30 |
| 49 | #define ISL9305_LDO2_EN 0x08 |
| 50 | #define ISL9305_LDO1_EN 0x04 |
| 51 | #define ISL9305_DCD2_EN 0x02 |
| 52 | #define ISL9305_DCD1_EN 0x01 |
| 53 | |
| 54 | /* |
| 55 | * DCD_SRCTL |
| 56 | */ |
| 57 | #define ISL9305_DCD2SR_MASK 0xc0 |
| 58 | #define ISL9305_DCD1SR_MASK 0x07 |
| 59 | |
| 60 | static const struct regulator_ops isl9305_ops = { |
| 61 | .enable = regulator_enable_regmap, |
| 62 | .disable = regulator_disable_regmap, |
| 63 | .is_enabled = regulator_is_enabled_regmap, |
| 64 | .list_voltage = regulator_list_voltage_linear, |
| 65 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| 66 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| 67 | }; |
| 68 | |
| 69 | static const struct regulator_desc isl9305_regulators[] = { |
| 70 | [ISL9305_DCD1] = { |
| 71 | .name = "DCD1", |
Mark Brown | 93a127b | 2014-09-10 12:18:56 +0100 | [diff] [blame] | 72 | .of_match = of_match_ptr("dcd1"), |
| 73 | .regulators_node = of_match_ptr("regulators"), |
Mark Brown | dec38b5 | 2014-09-06 01:11:12 +0100 | [diff] [blame] | 74 | .n_voltages = 0x70, |
| 75 | .min_uV = 825000, |
| 76 | .uV_step = 25000, |
| 77 | .vsel_reg = ISL9305_DCD1OUT, |
| 78 | .vsel_mask = 0x7f, |
| 79 | .enable_reg = ISL9305_SYSTEM_PARAMETER, |
| 80 | .enable_mask = ISL9305_DCD1_EN, |
| 81 | .supply_name = "VINDCD1", |
| 82 | .ops = &isl9305_ops, |
Axel Lin | 46942b2 | 2018-08-27 22:15:21 +0800 | [diff] [blame] | 83 | .owner = THIS_MODULE, |
Mark Brown | dec38b5 | 2014-09-06 01:11:12 +0100 | [diff] [blame] | 84 | }, |
| 85 | [ISL9305_DCD2] = { |
| 86 | .name = "DCD2", |
Mark Brown | 93a127b | 2014-09-10 12:18:56 +0100 | [diff] [blame] | 87 | .of_match = of_match_ptr("dcd2"), |
| 88 | .regulators_node = of_match_ptr("regulators"), |
Mark Brown | dec38b5 | 2014-09-06 01:11:12 +0100 | [diff] [blame] | 89 | .n_voltages = 0x70, |
| 90 | .min_uV = 825000, |
| 91 | .uV_step = 25000, |
| 92 | .vsel_reg = ISL9305_DCD2OUT, |
| 93 | .vsel_mask = 0x7f, |
| 94 | .enable_reg = ISL9305_SYSTEM_PARAMETER, |
| 95 | .enable_mask = ISL9305_DCD2_EN, |
| 96 | .supply_name = "VINDCD2", |
| 97 | .ops = &isl9305_ops, |
Axel Lin | 46942b2 | 2018-08-27 22:15:21 +0800 | [diff] [blame] | 98 | .owner = THIS_MODULE, |
Mark Brown | dec38b5 | 2014-09-06 01:11:12 +0100 | [diff] [blame] | 99 | }, |
| 100 | [ISL9305_LDO1] = { |
| 101 | .name = "LDO1", |
Mark Brown | 93a127b | 2014-09-10 12:18:56 +0100 | [diff] [blame] | 102 | .of_match = of_match_ptr("ldo1"), |
| 103 | .regulators_node = of_match_ptr("regulators"), |
Mark Brown | dec38b5 | 2014-09-06 01:11:12 +0100 | [diff] [blame] | 104 | .n_voltages = 0x37, |
| 105 | .min_uV = 900000, |
| 106 | .uV_step = 50000, |
| 107 | .vsel_reg = ISL9305_LDO1OUT, |
| 108 | .vsel_mask = 0x3f, |
| 109 | .enable_reg = ISL9305_SYSTEM_PARAMETER, |
| 110 | .enable_mask = ISL9305_LDO1_EN, |
| 111 | .supply_name = "VINLDO1", |
| 112 | .ops = &isl9305_ops, |
Axel Lin | 46942b2 | 2018-08-27 22:15:21 +0800 | [diff] [blame] | 113 | .owner = THIS_MODULE, |
Mark Brown | dec38b5 | 2014-09-06 01:11:12 +0100 | [diff] [blame] | 114 | }, |
| 115 | [ISL9305_LDO2] = { |
| 116 | .name = "LDO2", |
Mark Brown | 93a127b | 2014-09-10 12:18:56 +0100 | [diff] [blame] | 117 | .of_match = of_match_ptr("ldo2"), |
| 118 | .regulators_node = of_match_ptr("regulators"), |
Mark Brown | dec38b5 | 2014-09-06 01:11:12 +0100 | [diff] [blame] | 119 | .n_voltages = 0x37, |
| 120 | .min_uV = 900000, |
| 121 | .uV_step = 50000, |
| 122 | .vsel_reg = ISL9305_LDO2OUT, |
| 123 | .vsel_mask = 0x3f, |
| 124 | .enable_reg = ISL9305_SYSTEM_PARAMETER, |
| 125 | .enable_mask = ISL9305_LDO2_EN, |
| 126 | .supply_name = "VINLDO2", |
| 127 | .ops = &isl9305_ops, |
Axel Lin | 46942b2 | 2018-08-27 22:15:21 +0800 | [diff] [blame] | 128 | .owner = THIS_MODULE, |
Mark Brown | dec38b5 | 2014-09-06 01:11:12 +0100 | [diff] [blame] | 129 | }, |
| 130 | }; |
| 131 | |
Mark Brown | dec38b5 | 2014-09-06 01:11:12 +0100 | [diff] [blame] | 132 | static const struct regmap_config isl9305_regmap = { |
| 133 | .reg_bits = 8, |
| 134 | .val_bits = 8, |
| 135 | |
| 136 | .max_register = ISL9305_MAX_REG, |
Bo Liu | 66a4ead | 2024-03-20 04:57:30 -0400 | [diff] [blame] | 137 | .cache_type = REGCACHE_MAPLE, |
Mark Brown | dec38b5 | 2014-09-06 01:11:12 +0100 | [diff] [blame] | 138 | }; |
| 139 | |
Axel Lin | 77e2959 | 2020-01-09 23:58:08 +0800 | [diff] [blame] | 140 | static int isl9305_i2c_probe(struct i2c_client *i2c) |
Mark Brown | dec38b5 | 2014-09-06 01:11:12 +0100 | [diff] [blame] | 141 | { |
| 142 | struct regulator_config config = { }; |
| 143 | struct isl9305_pdata *pdata = i2c->dev.platform_data; |
Mark Brown | dec38b5 | 2014-09-06 01:11:12 +0100 | [diff] [blame] | 144 | struct regulator_dev *rdev; |
| 145 | struct regmap *regmap; |
| 146 | int i, ret; |
| 147 | |
Mark Brown | dec38b5 | 2014-09-06 01:11:12 +0100 | [diff] [blame] | 148 | regmap = devm_regmap_init_i2c(i2c, &isl9305_regmap); |
| 149 | if (IS_ERR(regmap)) { |
| 150 | ret = PTR_ERR(regmap); |
| 151 | dev_err(&i2c->dev, "Failed to create regmap: %d\n", ret); |
| 152 | return ret; |
| 153 | } |
| 154 | |
| 155 | config.dev = &i2c->dev; |
| 156 | |
| 157 | for (i = 0; i < ARRAY_SIZE(isl9305_regulators); i++) { |
Mark Brown | 93a127b | 2014-09-10 12:18:56 +0100 | [diff] [blame] | 158 | if (pdata) |
Mark Brown | dec38b5 | 2014-09-06 01:11:12 +0100 | [diff] [blame] | 159 | config.init_data = pdata->init_data[i]; |
Mark Brown | 93a127b | 2014-09-10 12:18:56 +0100 | [diff] [blame] | 160 | else |
| 161 | config.init_data = NULL; |
Mark Brown | dec38b5 | 2014-09-06 01:11:12 +0100 | [diff] [blame] | 162 | |
| 163 | rdev = devm_regulator_register(&i2c->dev, |
| 164 | &isl9305_regulators[i], |
| 165 | &config); |
| 166 | if (IS_ERR(rdev)) { |
| 167 | ret = PTR_ERR(rdev); |
| 168 | dev_err(&i2c->dev, "Failed to register %s: %d\n", |
| 169 | isl9305_regulators[i].name, ret); |
| 170 | return ret; |
| 171 | } |
| 172 | } |
| 173 | |
| 174 | return 0; |
| 175 | } |
| 176 | |
| 177 | #ifdef CONFIG_OF |
| 178 | static const struct of_device_id isl9305_dt_ids[] = { |
Arnaud Ebalard | 6fd7535 | 2014-12-16 22:20:50 +0100 | [diff] [blame] | 179 | { .compatible = "isl,isl9305" }, /* for backward compat., don't use */ |
| 180 | { .compatible = "isil,isl9305" }, |
| 181 | { .compatible = "isl,isl9305h" }, /* for backward compat., don't use */ |
| 182 | { .compatible = "isil,isl9305h" }, |
Mark Brown | dec38b5 | 2014-09-06 01:11:12 +0100 | [diff] [blame] | 183 | {}, |
| 184 | }; |
Javier Martinez Canillas | 5b87af4 | 2015-08-25 08:31:17 +0200 | [diff] [blame] | 185 | MODULE_DEVICE_TABLE(of, isl9305_dt_ids); |
Mark Brown | dec38b5 | 2014-09-06 01:11:12 +0100 | [diff] [blame] | 186 | #endif |
| 187 | |
| 188 | static const struct i2c_device_id isl9305_i2c_id[] = { |
| 189 | { "isl9305", }, |
| 190 | { "isl9305h", }, |
| 191 | { } |
| 192 | }; |
| 193 | MODULE_DEVICE_TABLE(i2c, isl9305_i2c_id); |
| 194 | |
| 195 | static struct i2c_driver isl9305_regulator_driver = { |
| 196 | .driver = { |
| 197 | .name = "isl9305", |
Douglas Anderson | 259b93b | 2023-03-16 12:54:38 -0700 | [diff] [blame] | 198 | .probe_type = PROBE_PREFER_ASYNCHRONOUS, |
Mark Brown | dec38b5 | 2014-09-06 01:11:12 +0100 | [diff] [blame] | 199 | .of_match_table = of_match_ptr(isl9305_dt_ids), |
| 200 | }, |
Uwe Kleine-König | 964e186 | 2023-05-06 00:02:18 +0200 | [diff] [blame] | 201 | .probe = isl9305_i2c_probe, |
Mark Brown | dec38b5 | 2014-09-06 01:11:12 +0100 | [diff] [blame] | 202 | .id_table = isl9305_i2c_id, |
| 203 | }; |
| 204 | |
| 205 | module_i2c_driver(isl9305_regulator_driver); |
| 206 | |
| 207 | MODULE_AUTHOR("Mark Brown"); |
| 208 | MODULE_DESCRIPTION("Intersil ISL9305 DCDC regulator"); |
| 209 | MODULE_LICENSE("GPL"); |