| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Jonghwa Lee | 510 | 48.57% | 1 | 5.88% |
| Krzysztof Kozlowski | 486 | 46.29% | 11 | 64.71% |
| Marek Szyprowski | 37 | 3.52% | 1 | 5.88% |
| Sachin Kamat | 8 | 0.76% | 1 | 5.88% |
| Robert Baldyga | 7 | 0.67% | 1 | 5.88% |
| Axel Lin | 1 | 0.10% | 1 | 5.88% |
| Bhumika Goyal | 1 | 0.10% | 1 | 5.88% |
| Total | 1050 | 17 |
// SPDX-License-Identifier: GPL-2.0+ // // max77693.c - Regulator driver for the Maxim 77693 and 77843 // // Copyright (C) 2013-2015 Samsung Electronics // Jonghwa Lee <jonghwa3.lee@samsung.com> // Krzysztof Kozlowski <krzk@kernel.org> // // This driver is based on max77686.c #include <linux/err.h> #include <linux/slab.h> #include <linux/platform_device.h> #include <linux/module.h> #include <linux/export.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> #include <linux/mfd/max77693.h> #include <linux/mfd/max77693-common.h> #include <linux/mfd/max77693-private.h> #include <linux/mfd/max77843-private.h> #include <linux/regulator/of_regulator.h> #include <linux/regmap.h> /* * ID for MAX77843 regulators. * There is no need for such for MAX77693. */ enum max77843_regulator_type { MAX77843_SAFEOUT1 = 0, MAX77843_SAFEOUT2, MAX77843_CHARGER, MAX77843_NUM, }; /* Register differences between chargers: MAX77693 and MAX77843 */ struct chg_reg_data { unsigned int linear_reg; unsigned int linear_mask; unsigned int uA_step; unsigned int min_sel; }; /* * MAX77693 CHARGER regulator - Min : 20mA, Max : 2580mA, step : 20mA * 0x00, 0x01, 0x2, 0x03 = 60 mA * 0x04 ~ 0x7E = (60 + (X - 3) * 20) mA * Actually for MAX77693 the driver manipulates the maximum input current, * not the fast charge current (output). This should be fixed. * * On MAX77843 the calculation formula is the same (except values). * Fortunately it properly manipulates the fast charge current. */ static int max77693_chg_get_current_limit(struct regulator_dev *rdev) { const struct chg_reg_data *reg_data = rdev_get_drvdata(rdev); unsigned int chg_min_uA = rdev->constraints->min_uA; unsigned int chg_max_uA = rdev->constraints->max_uA; unsigned int reg, sel; unsigned int val; int ret; ret = regmap_read(rdev->regmap, reg_data->linear_reg, ®); if (ret < 0) return ret; sel = reg & reg_data->linear_mask; /* the first four codes for charger current are all 60mA */ if (sel <= reg_data->min_sel) sel = 0; else sel -= reg_data->min_sel; val = chg_min_uA + reg_data->uA_step * sel; if (val > chg_max_uA) return -EINVAL; return val; } static int max77693_chg_set_current_limit(struct regulator_dev *rdev, int min_uA, int max_uA) { const struct chg_reg_data *reg_data = rdev_get_drvdata(rdev); unsigned int chg_min_uA = rdev->constraints->min_uA; int sel = 0; while (chg_min_uA + reg_data->uA_step * sel < min_uA) sel++; if (chg_min_uA + reg_data->uA_step * sel > max_uA) return -EINVAL; /* the first four codes for charger current are all 60mA */ sel += reg_data->min_sel; return regmap_write(rdev->regmap, reg_data->linear_reg, sel); } /* end of CHARGER regulator ops */ /* Returns regmap suitable for given regulator on chosen device */ static struct regmap *max77693_get_regmap(enum max77693_types type, struct max77693_dev *max77693, int reg_id) { if (type == TYPE_MAX77693) return max77693->regmap; /* Else: TYPE_MAX77843 */ switch (reg_id) { case MAX77843_SAFEOUT1: case MAX77843_SAFEOUT2: return max77693->regmap; case MAX77843_CHARGER: return max77693->regmap_chg; default: return max77693->regmap; } } static const unsigned int max77693_safeout_table[] = { 4850000, 4900000, 4950000, 3300000, }; static const struct regulator_ops max77693_safeout_ops = { .list_voltage = regulator_list_voltage_table, .is_enabled = regulator_is_enabled_regmap, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, }; static const struct regulator_ops max77693_charger_ops = { .is_enabled = regulator_is_enabled_regmap, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .get_current_limit = max77693_chg_get_current_limit, .set_current_limit = max77693_chg_set_current_limit, }; #define max77693_regulator_desc_esafeout(_num) { \ .name = "ESAFEOUT"#_num, \ .id = MAX77693_ESAFEOUT##_num, \ .of_match = of_match_ptr("ESAFEOUT"#_num), \ .regulators_node = of_match_ptr("regulators"), \ .n_voltages = 4, \ .ops = &max77693_safeout_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .volt_table = max77693_safeout_table, \ .vsel_reg = MAX77693_CHG_REG_SAFEOUT_CTRL, \ .vsel_mask = SAFEOUT_CTRL_SAFEOUT##_num##_MASK, \ .enable_reg = MAX77693_CHG_REG_SAFEOUT_CTRL, \ .enable_mask = SAFEOUT_CTRL_ENSAFEOUT##_num##_MASK , \ } static const struct regulator_desc max77693_supported_regulators[] = { max77693_regulator_desc_esafeout(1), max77693_regulator_desc_esafeout(2), { .name = "CHARGER", .id = MAX77693_CHARGER, .of_match = of_match_ptr("CHARGER"), .regulators_node = of_match_ptr("regulators"), .ops = &max77693_charger_ops, .type = REGULATOR_CURRENT, .owner = THIS_MODULE, .enable_reg = MAX77693_CHG_REG_CHG_CNFG_00, .enable_mask = CHG_CNFG_00_CHG_MASK | CHG_CNFG_00_BUCK_MASK, .enable_val = CHG_CNFG_00_CHG_MASK | CHG_CNFG_00_BUCK_MASK, }, }; static const struct chg_reg_data max77693_chg_reg_data = { .linear_reg = MAX77693_CHG_REG_CHG_CNFG_09, .linear_mask = CHG_CNFG_09_CHGIN_ILIM_MASK, .uA_step = 20000, .min_sel = 3, }; #define max77843_regulator_desc_esafeout(num) { \ .name = "SAFEOUT" # num, \ .id = MAX77843_SAFEOUT ## num, \ .ops = &max77693_safeout_ops, \ .of_match = of_match_ptr("SAFEOUT" # num), \ .regulators_node = of_match_ptr("regulators"), \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .n_voltages = ARRAY_SIZE(max77693_safeout_table), \ .volt_table = max77693_safeout_table, \ .enable_reg = MAX77843_SYS_REG_SAFEOUTCTRL, \ .enable_mask = MAX77843_REG_SAFEOUTCTRL_ENSAFEOUT ## num, \ .vsel_reg = MAX77843_SYS_REG_SAFEOUTCTRL, \ .vsel_mask = MAX77843_REG_SAFEOUTCTRL_SAFEOUT ## num ## _MASK, \ } static const struct regulator_desc max77843_supported_regulators[] = { [MAX77843_SAFEOUT1] = max77843_regulator_desc_esafeout(1), [MAX77843_SAFEOUT2] = max77843_regulator_desc_esafeout(2), [MAX77843_CHARGER] = { .name = "CHARGER", .id = MAX77843_CHARGER, .ops = &max77693_charger_ops, .of_match = of_match_ptr("CHARGER"), .regulators_node = of_match_ptr("regulators"), .type = REGULATOR_CURRENT, .owner = THIS_MODULE, .enable_reg = MAX77843_CHG_REG_CHG_CNFG_00, .enable_mask = MAX77843_CHG_MASK, .enable_val = MAX77843_CHG_MASK, }, }; static const struct chg_reg_data max77843_chg_reg_data = { .linear_reg = MAX77843_CHG_REG_CHG_CNFG_02, .linear_mask = MAX77843_CHG_FAST_CHG_CURRENT_MASK, .uA_step = MAX77843_CHG_FAST_CHG_CURRENT_STEP, .min_sel = 2, }; static int max77693_pmic_probe(struct platform_device *pdev) { enum max77693_types type = platform_get_device_id(pdev)->driver_data; struct max77693_dev *iodev = dev_get_drvdata(pdev->dev.parent); const struct regulator_desc *regulators; unsigned int regulators_size; int i; struct regulator_config config = { }; config.dev = iodev->dev; switch (type) { case TYPE_MAX77693: regulators = max77693_supported_regulators; regulators_size = ARRAY_SIZE(max77693_supported_regulators); config.driver_data = (void *)&max77693_chg_reg_data; break; case TYPE_MAX77843: regulators = max77843_supported_regulators; regulators_size = ARRAY_SIZE(max77843_supported_regulators); config.driver_data = (void *)&max77843_chg_reg_data; break; default: dev_err(&pdev->dev, "Unsupported device type: %u\n", type); return -ENODEV; } for (i = 0; i < regulators_size; i++) { struct regulator_dev *rdev; config.regmap = max77693_get_regmap(type, iodev, regulators[i].id); rdev = devm_regulator_register(&pdev->dev, ®ulators[i], &config); if (IS_ERR(rdev)) { dev_err(&pdev->dev, "Failed to initialize regulator-%d\n", i); return PTR_ERR(rdev); } } return 0; } static const struct platform_device_id max77693_pmic_id[] = { { "max77693-pmic", TYPE_MAX77693 }, { "max77843-regulator", TYPE_MAX77843 }, {}, }; MODULE_DEVICE_TABLE(platform, max77693_pmic_id); static struct platform_driver max77693_pmic_driver = { .driver = { .name = "max77693-pmic", }, .probe = max77693_pmic_probe, .id_table = max77693_pmic_id, }; static int __init max77693_pmic_init(void) { return platform_driver_register(&max77693_pmic_driver); } subsys_initcall(max77693_pmic_init); static void __exit max77693_pmic_cleanup(void) { platform_driver_unregister(&max77693_pmic_driver); } module_exit(max77693_pmic_cleanup); MODULE_DESCRIPTION("MAXIM 77693/77843 regulator driver"); MODULE_AUTHOR("Jonghwa Lee <jonghwa3.lee@samsung.com>"); MODULE_AUTHOR("Krzysztof Kozlowski <krzk@kernel.org>"); MODULE_LICENSE("GPL");
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