diff options
Diffstat (limited to 'drivers/regulator/max77693.c')
| -rw-r--r-- | drivers/regulator/max77693.c | 318 |
1 files changed, 0 insertions, 318 deletions
diff --git a/drivers/regulator/max77693.c b/drivers/regulator/max77693.c deleted file mode 100644 index de730fd3f..000000000 --- a/drivers/regulator/max77693.c +++ /dev/null @@ -1,318 +0,0 @@ -/* - * max77693.c - Regulator driver for the Maxim 77693 and 77843 - * - * Copyright (C) 2013-2015 Samsung Electronics - * Jonghwa Lee <jonghwa3.lee@samsung.com> - * Krzysztof Kozlowski <k.kozlowski.k@gmail.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * 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 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 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 <k.kozlowski.k@gmail.com>"); -MODULE_LICENSE("GPL"); |