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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,285 @@ | ||
| /* | ||
| * tps65218-regulator.c | ||
| * | ||
| * Regulator driver for TPS65218 PMIC | ||
| * | ||
| * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/ | ||
| * | ||
| * This program is free software; you can redistribute it and/or | ||
| * modify it under the terms of the GNU General Public License version 2 as | ||
| * published by the Free Software Foundation. | ||
| * | ||
| * This program is distributed "as is" WITHOUT ANY WARRANTY of any | ||
| * kind, whether expressed or implied; without even the implied warranty | ||
| * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License version 2 for more details. | ||
| */ | ||
|
|
||
| #include <linux/kernel.h> | ||
| #include <linux/module.h> | ||
| #include <linux/device.h> | ||
| #include <linux/init.h> | ||
| #include <linux/err.h> | ||
| #include <linux/platform_device.h> | ||
| #include <linux/of_device.h> | ||
| #include <linux/regulator/of_regulator.h> | ||
| #include <linux/regulator/driver.h> | ||
| #include <linux/regulator/machine.h> | ||
| #include <linux/mfd/tps65218.h> | ||
|
|
||
| static unsigned int tps65218_ramp_delay = 4000; | ||
|
|
||
| enum tps65218_regulators { DCDC1, DCDC2, DCDC3, DCDC4, DCDC5, DCDC6, LDO1 }; | ||
|
|
||
| #define TPS65218_REGULATOR(_name, _id, _ops, _n, _vr, _vm, _er, _em, _t, \ | ||
| _lr, _nlr) \ | ||
| { \ | ||
| .name = _name, \ | ||
| .id = _id, \ | ||
| .ops = &_ops, \ | ||
| .n_voltages = _n, \ | ||
| .type = REGULATOR_VOLTAGE, \ | ||
| .owner = THIS_MODULE, \ | ||
| .vsel_reg = _vr, \ | ||
| .vsel_mask = _vm, \ | ||
| .enable_reg = _er, \ | ||
| .enable_mask = _em, \ | ||
| .volt_table = _t, \ | ||
| .linear_ranges = _lr, \ | ||
| .n_linear_ranges = _nlr, \ | ||
| } \ | ||
|
|
||
| #define TPS65218_INFO(_id, _nm, _min, _max) \ | ||
| { \ | ||
| .id = _id, \ | ||
| .name = _nm, \ | ||
| .min_uV = _min, \ | ||
| .max_uV = _max, \ | ||
| } | ||
|
|
||
| static const struct regulator_linear_range dcdc1_dcdc2_ranges[] = { | ||
| REGULATOR_LINEAR_RANGE(850000, 0x0, 0x32, 10000), | ||
| REGULATOR_LINEAR_RANGE(1375000, 0x33, 0x3f, 25000), | ||
| }; | ||
|
|
||
| static const struct regulator_linear_range ldo1_dcdc3_ranges[] = { | ||
| REGULATOR_LINEAR_RANGE(900000, 0x0, 0x1a, 25000), | ||
| REGULATOR_LINEAR_RANGE(1600000, 0x1b, 0x3f, 50000), | ||
| }; | ||
|
|
||
| static const struct regulator_linear_range dcdc4_ranges[] = { | ||
| REGULATOR_LINEAR_RANGE(1175000, 0x0, 0xf, 25000), | ||
| REGULATOR_LINEAR_RANGE(1550000, 0x10, 0x34, 50000), | ||
| }; | ||
|
|
||
| static struct tps_info tps65218_pmic_regs[] = { | ||
| TPS65218_INFO(0, "DCDC1", 850000, 167500), | ||
| TPS65218_INFO(1, "DCDC2", 850000, 1675000), | ||
| TPS65218_INFO(2, "DCDC3", 900000, 3400000), | ||
| TPS65218_INFO(3, "DCDC4", 1175000, 3400000), | ||
| TPS65218_INFO(4, "DCDC5", 1000000, 1000000), | ||
| TPS65218_INFO(5, "DCDC6", 1800000, 1800000), | ||
| TPS65218_INFO(6, "LDO1", 900000, 3400000), | ||
| }; | ||
|
|
||
| #define TPS65218_OF_MATCH(comp, label) \ | ||
| { \ | ||
| .compatible = comp, \ | ||
| .data = &label, \ | ||
| } | ||
|
|
||
| static const struct of_device_id tps65218_of_match[] = { | ||
| TPS65218_OF_MATCH("ti,tps65218-dcdc1", tps65218_pmic_regs[DCDC1]), | ||
| TPS65218_OF_MATCH("ti,tps65218-dcdc2", tps65218_pmic_regs[DCDC2]), | ||
| TPS65218_OF_MATCH("ti,tps65218-dcdc3", tps65218_pmic_regs[DCDC3]), | ||
| TPS65218_OF_MATCH("ti,tps65218-dcdc4", tps65218_pmic_regs[DCDC4]), | ||
| TPS65218_OF_MATCH("ti,tps65218-dcdc5", tps65218_pmic_regs[DCDC5]), | ||
| TPS65218_OF_MATCH("ti,tps65218-dcdc6", tps65218_pmic_regs[DCDC6]), | ||
| TPS65218_OF_MATCH("ti,tps65218-ldo1", tps65218_pmic_regs[LDO1]), | ||
| { } | ||
| }; | ||
| MODULE_DEVICE_TABLE(of, tps65218_of_match); | ||
|
|
||
| static int tps65218_pmic_set_voltage_sel(struct regulator_dev *dev, | ||
| unsigned selector) | ||
| { | ||
| int ret; | ||
| struct tps65218 *tps = rdev_get_drvdata(dev); | ||
| unsigned int rid = rdev_get_id(dev); | ||
|
|
||
| /* Set the voltage based on vsel value and write protect level is 2 */ | ||
| ret = tps65218_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask, | ||
| selector, TPS65218_PROTECT_L1); | ||
|
|
||
| /* Set GO bit for DCDC1/2 to initiate voltage transistion */ | ||
| switch (rid) { | ||
| case TPS65218_DCDC_1: | ||
| case TPS65218_DCDC_2: | ||
| ret = tps65218_set_bits(tps, TPS65218_REG_CONTRL_SLEW_RATE, | ||
| TPS65218_SLEW_RATE_GO, | ||
| TPS65218_SLEW_RATE_GO, | ||
| TPS65218_PROTECT_L1); | ||
| break; | ||
| } | ||
|
|
||
| return ret; | ||
| } | ||
|
|
||
| static int tps65218_pmic_enable(struct regulator_dev *dev) | ||
| { | ||
| struct tps65218 *tps = rdev_get_drvdata(dev); | ||
| unsigned int rid = rdev_get_id(dev); | ||
|
|
||
| if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1) | ||
| return -EINVAL; | ||
|
|
||
| /* Enable the regulator and password protection is level 1 */ | ||
| return tps65218_set_bits(tps, dev->desc->enable_reg, | ||
| dev->desc->enable_mask, dev->desc->enable_mask, | ||
| TPS65218_PROTECT_L1); | ||
| } | ||
|
|
||
| static int tps65218_pmic_disable(struct regulator_dev *dev) | ||
| { | ||
| struct tps65218 *tps = rdev_get_drvdata(dev); | ||
| unsigned int rid = rdev_get_id(dev); | ||
|
|
||
| if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1) | ||
| return -EINVAL; | ||
|
|
||
| /* Disable the regulator and password protection is level 1 */ | ||
| return tps65218_clear_bits(tps, dev->desc->enable_reg, | ||
| dev->desc->enable_mask, TPS65218_PROTECT_L1); | ||
| } | ||
|
|
||
| static int tps65218_set_voltage_time_sel(struct regulator_dev *rdev, | ||
| unsigned int old_selector, unsigned int new_selector) | ||
| { | ||
| int old_uv, new_uv; | ||
|
|
||
| old_uv = regulator_list_voltage_linear_range(rdev, old_selector); | ||
| if (old_uv < 0) | ||
| return old_uv; | ||
|
|
||
| new_uv = regulator_list_voltage_linear_range(rdev, new_selector); | ||
| if (new_uv < 0) | ||
| return new_uv; | ||
|
|
||
| return DIV_ROUND_UP(abs(old_uv - new_uv), tps65218_ramp_delay); | ||
| } | ||
|
|
||
| /* Operations permitted on DCDC1, DCDC2 */ | ||
| static struct regulator_ops tps65218_dcdc12_ops = { | ||
| .is_enabled = regulator_is_enabled_regmap, | ||
| .enable = tps65218_pmic_enable, | ||
| .disable = tps65218_pmic_disable, | ||
| .get_voltage_sel = regulator_get_voltage_sel_regmap, | ||
| .set_voltage_sel = tps65218_pmic_set_voltage_sel, | ||
| .list_voltage = regulator_list_voltage_linear_range, | ||
| .map_voltage = regulator_map_voltage_linear_range, | ||
| .set_voltage_time_sel = tps65218_set_voltage_time_sel, | ||
| }; | ||
|
|
||
| /* Operations permitted on DCDC3, DCDC4 and LDO1 */ | ||
| static struct regulator_ops tps65218_ldo1_dcdc34_ops = { | ||
| .is_enabled = regulator_is_enabled_regmap, | ||
| .enable = tps65218_pmic_enable, | ||
| .disable = tps65218_pmic_disable, | ||
| .get_voltage_sel = regulator_get_voltage_sel_regmap, | ||
| .set_voltage_sel = tps65218_pmic_set_voltage_sel, | ||
| .list_voltage = regulator_list_voltage_linear_range, | ||
| .map_voltage = regulator_map_voltage_linear_range, | ||
| }; | ||
|
|
||
| /* Operations permitted on DCDC5, DCDC6 */ | ||
| static struct regulator_ops tps65218_dcdc56_pmic_ops = { | ||
| .is_enabled = regulator_is_enabled_regmap, | ||
| .enable = tps65218_pmic_enable, | ||
| .disable = tps65218_pmic_disable, | ||
| }; | ||
|
|
||
| static const struct regulator_desc regulators[] = { | ||
| TPS65218_REGULATOR("DCDC1", TPS65218_DCDC_1, tps65218_dcdc12_ops, 64, | ||
| TPS65218_REG_CONTROL_DCDC1, | ||
| TPS65218_CONTROL_DCDC1_MASK, | ||
| TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC1_EN, NULL, | ||
| dcdc1_dcdc2_ranges, 2), | ||
| TPS65218_REGULATOR("DCDC2", TPS65218_DCDC_2, tps65218_dcdc12_ops, 64, | ||
| TPS65218_REG_CONTROL_DCDC2, | ||
| TPS65218_CONTROL_DCDC2_MASK, | ||
| TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC2_EN, NULL, | ||
| dcdc1_dcdc2_ranges, 2), | ||
| TPS65218_REGULATOR("DCDC3", TPS65218_DCDC_3, tps65218_ldo1_dcdc34_ops, | ||
| 64, TPS65218_REG_CONTROL_DCDC3, | ||
| TPS65218_CONTROL_DCDC3_MASK, TPS65218_REG_ENABLE1, | ||
| TPS65218_ENABLE1_DC3_EN, NULL, | ||
| ldo1_dcdc3_ranges, 2), | ||
| TPS65218_REGULATOR("DCDC4", TPS65218_DCDC_4, tps65218_ldo1_dcdc34_ops, | ||
| 53, TPS65218_REG_CONTROL_DCDC4, | ||
| TPS65218_CONTROL_DCDC4_MASK, | ||
| TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC4_EN, NULL, | ||
| dcdc4_ranges, 2), | ||
| TPS65218_REGULATOR("DCDC5", TPS65218_DCDC_5, tps65218_dcdc56_pmic_ops, | ||
| 1, -1, -1, TPS65218_REG_ENABLE1, | ||
| TPS65218_ENABLE1_DC5_EN, NULL, NULL, 0), | ||
| TPS65218_REGULATOR("DCDC6", TPS65218_DCDC_6, tps65218_dcdc56_pmic_ops, | ||
| 1, -1, -1, TPS65218_REG_ENABLE1, | ||
| TPS65218_ENABLE1_DC6_EN, NULL, NULL, 0), | ||
| TPS65218_REGULATOR("LDO1", TPS65218_LDO_1, tps65218_ldo1_dcdc34_ops, 64, | ||
| TPS65218_REG_CONTROL_DCDC4, | ||
| TPS65218_CONTROL_LDO1_MASK, TPS65218_REG_ENABLE2, | ||
| TPS65218_ENABLE2_LDO1_EN, NULL, ldo1_dcdc3_ranges, | ||
| 2), | ||
| }; | ||
|
|
||
| static int tps65218_regulator_probe(struct platform_device *pdev) | ||
| { | ||
| struct tps65218 *tps = dev_get_drvdata(pdev->dev.parent); | ||
| struct regulator_init_data *init_data; | ||
| const struct tps_info *template; | ||
| struct regulator_dev *rdev; | ||
| const struct of_device_id *match; | ||
| struct regulator_config config = { }; | ||
| int id; | ||
|
|
||
| match = of_match_device(tps65218_of_match, &pdev->dev); | ||
| if (!match) | ||
| return -ENODEV; | ||
|
|
||
| template = match->data; | ||
| id = template->id; | ||
| init_data = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node); | ||
|
|
||
| platform_set_drvdata(pdev, tps); | ||
|
|
||
| tps->info[id] = &tps65218_pmic_regs[id]; | ||
| config.dev = &pdev->dev; | ||
| config.init_data = init_data; | ||
| config.driver_data = tps; | ||
| config.regmap = tps->regmap; | ||
|
|
||
| rdev = devm_regulator_register(&pdev->dev, ®ulators[id], &config); | ||
| if (IS_ERR(rdev)) { | ||
| dev_err(tps->dev, "failed to register %s regulator\n", | ||
| pdev->name); | ||
| return PTR_ERR(rdev); | ||
| } | ||
|
|
||
| return 0; | ||
| } | ||
|
|
||
| static struct platform_driver tps65218_regulator_driver = { | ||
| .driver = { | ||
| .name = "tps65218-pmic", | ||
| .owner = THIS_MODULE, | ||
| .of_match_table = tps65218_of_match, | ||
| }, | ||
| .probe = tps65218_regulator_probe, | ||
| }; | ||
|
|
||
| module_platform_driver(tps65218_regulator_driver); | ||
|
|
||
| MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>"); | ||
| MODULE_DESCRIPTION("TPS65218 voltage regulator driver"); | ||
| MODULE_ALIAS("platform:tps65218-pmic"); | ||
| MODULE_LICENSE("GPL v2"); |
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