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208 lines
5.0 KiB
208 lines
5.0 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* isl9305 - Intersil ISL9305 DCDC regulator |
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* |
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* Copyright 2014 Linaro Ltd |
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* |
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* Author: Mark Brown <[email protected]> |
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*/ |
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#include <linux/module.h> |
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#include <linux/err.h> |
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#include <linux/i2c.h> |
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#include <linux/of.h> |
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#include <linux/platform_data/isl9305.h> |
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#include <linux/regmap.h> |
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#include <linux/regulator/driver.h> |
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#include <linux/regulator/of_regulator.h> |
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#include <linux/slab.h> |
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/* |
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* Registers |
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*/ |
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#define ISL9305_DCD1OUT 0x0 |
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#define ISL9305_DCD2OUT 0x1 |
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#define ISL9305_LDO1OUT 0x2 |
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#define ISL9305_LDO2OUT 0x3 |
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#define ISL9305_DCD_PARAMETER 0x4 |
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#define ISL9305_SYSTEM_PARAMETER 0x5 |
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#define ISL9305_DCD_SRCTL 0x6 |
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#define ISL9305_MAX_REG ISL9305_DCD_SRCTL |
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/* |
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* DCD_PARAMETER |
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*/ |
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#define ISL9305_DCD_PHASE 0x40 |
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#define ISL9305_DCD2_ULTRA 0x20 |
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#define ISL9305_DCD1_ULTRA 0x10 |
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#define ISL9305_DCD2_BLD 0x08 |
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#define ISL9305_DCD1_BLD 0x04 |
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#define ISL9305_DCD2_MODE 0x02 |
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#define ISL9305_DCD1_MODE 0x01 |
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/* |
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* SYSTEM_PARAMETER |
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*/ |
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#define ISL9305_I2C_EN 0x40 |
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#define ISL9305_DCDPOR_MASK 0x30 |
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#define ISL9305_LDO2_EN 0x08 |
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#define ISL9305_LDO1_EN 0x04 |
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#define ISL9305_DCD2_EN 0x02 |
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#define ISL9305_DCD1_EN 0x01 |
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/* |
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* DCD_SRCTL |
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*/ |
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#define ISL9305_DCD2SR_MASK 0xc0 |
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#define ISL9305_DCD1SR_MASK 0x07 |
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static const struct regulator_ops isl9305_ops = { |
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.enable = regulator_enable_regmap, |
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.disable = regulator_disable_regmap, |
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.is_enabled = regulator_is_enabled_regmap, |
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.list_voltage = regulator_list_voltage_linear, |
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.get_voltage_sel = regulator_get_voltage_sel_regmap, |
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.set_voltage_sel = regulator_set_voltage_sel_regmap, |
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}; |
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static const struct regulator_desc isl9305_regulators[] = { |
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[ISL9305_DCD1] = { |
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.name = "DCD1", |
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.of_match = of_match_ptr("dcd1"), |
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.regulators_node = of_match_ptr("regulators"), |
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.n_voltages = 0x70, |
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.min_uV = 825000, |
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.uV_step = 25000, |
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.vsel_reg = ISL9305_DCD1OUT, |
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.vsel_mask = 0x7f, |
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.enable_reg = ISL9305_SYSTEM_PARAMETER, |
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.enable_mask = ISL9305_DCD1_EN, |
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.supply_name = "VINDCD1", |
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.ops = &isl9305_ops, |
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.owner = THIS_MODULE, |
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}, |
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[ISL9305_DCD2] = { |
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.name = "DCD2", |
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.of_match = of_match_ptr("dcd2"), |
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.regulators_node = of_match_ptr("regulators"), |
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.n_voltages = 0x70, |
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.min_uV = 825000, |
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.uV_step = 25000, |
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.vsel_reg = ISL9305_DCD2OUT, |
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.vsel_mask = 0x7f, |
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.enable_reg = ISL9305_SYSTEM_PARAMETER, |
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.enable_mask = ISL9305_DCD2_EN, |
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.supply_name = "VINDCD2", |
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.ops = &isl9305_ops, |
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.owner = THIS_MODULE, |
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}, |
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[ISL9305_LDO1] = { |
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.name = "LDO1", |
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.of_match = of_match_ptr("ldo1"), |
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.regulators_node = of_match_ptr("regulators"), |
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.n_voltages = 0x37, |
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.min_uV = 900000, |
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.uV_step = 50000, |
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.vsel_reg = ISL9305_LDO1OUT, |
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.vsel_mask = 0x3f, |
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.enable_reg = ISL9305_SYSTEM_PARAMETER, |
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.enable_mask = ISL9305_LDO1_EN, |
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.supply_name = "VINLDO1", |
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.ops = &isl9305_ops, |
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.owner = THIS_MODULE, |
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}, |
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[ISL9305_LDO2] = { |
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.name = "LDO2", |
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.of_match = of_match_ptr("ldo2"), |
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.regulators_node = of_match_ptr("regulators"), |
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.n_voltages = 0x37, |
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.min_uV = 900000, |
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.uV_step = 50000, |
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.vsel_reg = ISL9305_LDO2OUT, |
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.vsel_mask = 0x3f, |
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.enable_reg = ISL9305_SYSTEM_PARAMETER, |
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.enable_mask = ISL9305_LDO2_EN, |
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.supply_name = "VINLDO2", |
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.ops = &isl9305_ops, |
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.owner = THIS_MODULE, |
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}, |
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}; |
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static const struct regmap_config isl9305_regmap = { |
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.reg_bits = 8, |
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.val_bits = 8, |
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.max_register = ISL9305_MAX_REG, |
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.cache_type = REGCACHE_RBTREE, |
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}; |
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static int isl9305_i2c_probe(struct i2c_client *i2c) |
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{ |
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struct regulator_config config = { }; |
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struct isl9305_pdata *pdata = i2c->dev.platform_data; |
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struct regulator_dev *rdev; |
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struct regmap *regmap; |
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int i, ret; |
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regmap = devm_regmap_init_i2c(i2c, &isl9305_regmap); |
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if (IS_ERR(regmap)) { |
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ret = PTR_ERR(regmap); |
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dev_err(&i2c->dev, "Failed to create regmap: %d\n", ret); |
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return ret; |
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} |
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config.dev = &i2c->dev; |
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for (i = 0; i < ARRAY_SIZE(isl9305_regulators); i++) { |
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if (pdata) |
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config.init_data = pdata->init_data[i]; |
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else |
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config.init_data = NULL; |
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rdev = devm_regulator_register(&i2c->dev, |
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&isl9305_regulators[i], |
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&config); |
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if (IS_ERR(rdev)) { |
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ret = PTR_ERR(rdev); |
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dev_err(&i2c->dev, "Failed to register %s: %d\n", |
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isl9305_regulators[i].name, ret); |
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return ret; |
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} |
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} |
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return 0; |
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} |
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#ifdef CONFIG_OF |
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static const struct of_device_id isl9305_dt_ids[] = { |
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{ .compatible = "isl,isl9305" }, /* for backward compat., don't use */ |
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{ .compatible = "isil,isl9305" }, |
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{ .compatible = "isl,isl9305h" }, /* for backward compat., don't use */ |
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{ .compatible = "isil,isl9305h" }, |
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{}, |
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}; |
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MODULE_DEVICE_TABLE(of, isl9305_dt_ids); |
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#endif |
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static const struct i2c_device_id isl9305_i2c_id[] = { |
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{ "isl9305", }, |
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{ "isl9305h", }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(i2c, isl9305_i2c_id); |
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static struct i2c_driver isl9305_regulator_driver = { |
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.driver = { |
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.name = "isl9305", |
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.of_match_table = of_match_ptr(isl9305_dt_ids), |
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}, |
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.probe_new = isl9305_i2c_probe, |
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.id_table = isl9305_i2c_id, |
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}; |
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module_i2c_driver(isl9305_regulator_driver); |
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MODULE_AUTHOR("Mark Brown"); |
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MODULE_DESCRIPTION("Intersil ISL9305 DCDC regulator"); |
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MODULE_LICENSE("GPL");
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