diff options
Diffstat (limited to 'drivers/regulator/max14577.c')
| -rw-r--r-- | drivers/regulator/max14577.c | 337 |
1 files changed, 0 insertions, 337 deletions
diff --git a/drivers/regulator/max14577.c b/drivers/regulator/max14577.c deleted file mode 100644 index b2daa6641..000000000 --- a/drivers/regulator/max14577.c +++ /dev/null @@ -1,337 +0,0 @@ -/* - * max14577.c - Regulator driver for the Maxim 14577/77836 - * - * Copyright (C) 2013,2014 Samsung Electronics - * Krzysztof Kozlowski <k.kozlowski@samsung.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. - */ - -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/regulator/driver.h> -#include <linux/mfd/max14577.h> -#include <linux/mfd/max14577-private.h> -#include <linux/regulator/of_regulator.h> - -static int max14577_reg_is_enabled(struct regulator_dev *rdev) -{ - int rid = rdev_get_id(rdev); - struct regmap *rmap = rdev->regmap; - u8 reg_data; - - switch (rid) { - case MAX14577_CHARGER: - max14577_read_reg(rmap, MAX14577_CHG_REG_CHG_CTRL2, ®_data); - if ((reg_data & CHGCTRL2_MBCHOSTEN_MASK) == 0) - return 0; - max14577_read_reg(rmap, MAX14577_CHG_REG_STATUS3, ®_data); - if ((reg_data & STATUS3_CGMBC_MASK) == 0) - return 0; - /* MBCHOSTEN and CGMBC are on */ - return 1; - default: - return -EINVAL; - } -} - -static int max14577_reg_get_current_limit(struct regulator_dev *rdev) -{ - u8 reg_data; - struct regmap *rmap = rdev->regmap; - struct max14577 *max14577 = rdev_get_drvdata(rdev); - const struct maxim_charger_current *limits = - &maxim_charger_currents[max14577->dev_type]; - - if (rdev_get_id(rdev) != MAX14577_CHARGER) - return -EINVAL; - - max14577_read_reg(rmap, MAX14577_CHG_REG_CHG_CTRL4, ®_data); - - if ((reg_data & CHGCTRL4_MBCICHWRCL_MASK) == 0) - return limits->min; - - reg_data = ((reg_data & CHGCTRL4_MBCICHWRCH_MASK) >> - CHGCTRL4_MBCICHWRCH_SHIFT); - return limits->high_start + reg_data * limits->high_step; -} - -static int max14577_reg_set_current_limit(struct regulator_dev *rdev, - int min_uA, int max_uA) -{ - u8 reg_data; - int ret; - struct max14577 *max14577 = rdev_get_drvdata(rdev); - const struct maxim_charger_current *limits = - &maxim_charger_currents[max14577->dev_type]; - - if (rdev_get_id(rdev) != MAX14577_CHARGER) - return -EINVAL; - - ret = maxim_charger_calc_reg_current(limits, min_uA, max_uA, ®_data); - if (ret) - return ret; - - return max14577_update_reg(rdev->regmap, MAX14577_CHG_REG_CHG_CTRL4, - CHGCTRL4_MBCICHWRCL_MASK | CHGCTRL4_MBCICHWRCH_MASK, - reg_data); -} - -static struct regulator_ops max14577_safeout_ops = { - .is_enabled = regulator_is_enabled_regmap, - .enable = regulator_enable_regmap, - .disable = regulator_disable_regmap, - .list_voltage = regulator_list_voltage_linear, -}; - -static struct regulator_ops max14577_charger_ops = { - .is_enabled = max14577_reg_is_enabled, - .enable = regulator_enable_regmap, - .disable = regulator_disable_regmap, - .get_current_limit = max14577_reg_get_current_limit, - .set_current_limit = max14577_reg_set_current_limit, -}; - -#define MAX14577_SAFEOUT_REG { \ - .name = "SAFEOUT", \ - .of_match = of_match_ptr("SAFEOUT"), \ - .regulators_node = of_match_ptr("regulators"), \ - .id = MAX14577_SAFEOUT, \ - .ops = &max14577_safeout_ops, \ - .type = REGULATOR_VOLTAGE, \ - .owner = THIS_MODULE, \ - .n_voltages = 1, \ - .min_uV = MAX14577_REGULATOR_SAFEOUT_VOLTAGE, \ - .enable_reg = MAX14577_REG_CONTROL2, \ - .enable_mask = CTRL2_SFOUTORD_MASK, \ -} -#define MAX14577_CHARGER_REG { \ - .name = "CHARGER", \ - .of_match = of_match_ptr("CHARGER"), \ - .regulators_node = of_match_ptr("regulators"), \ - .id = MAX14577_CHARGER, \ - .ops = &max14577_charger_ops, \ - .type = REGULATOR_CURRENT, \ - .owner = THIS_MODULE, \ - .enable_reg = MAX14577_CHG_REG_CHG_CTRL2, \ - .enable_mask = CHGCTRL2_MBCHOSTEN_MASK, \ -} - -static const struct regulator_desc max14577_supported_regulators[] = { - [MAX14577_SAFEOUT] = MAX14577_SAFEOUT_REG, - [MAX14577_CHARGER] = MAX14577_CHARGER_REG, -}; - -static struct regulator_ops max77836_ldo_ops = { - .is_enabled = regulator_is_enabled_regmap, - .enable = regulator_enable_regmap, - .disable = regulator_disable_regmap, - .list_voltage = regulator_list_voltage_linear, - .map_voltage = regulator_map_voltage_linear, - .get_voltage_sel = regulator_get_voltage_sel_regmap, - .set_voltage_sel = regulator_set_voltage_sel_regmap, - /* TODO: add .set_suspend_mode */ -}; - -#define MAX77836_LDO_REG(num) { \ - .name = "LDO" # num, \ - .of_match = of_match_ptr("LDO" # num), \ - .regulators_node = of_match_ptr("regulators"), \ - .id = MAX77836_LDO ## num, \ - .ops = &max77836_ldo_ops, \ - .type = REGULATOR_VOLTAGE, \ - .owner = THIS_MODULE, \ - .n_voltages = MAX77836_REGULATOR_LDO_VOLTAGE_STEPS_NUM, \ - .min_uV = MAX77836_REGULATOR_LDO_VOLTAGE_MIN, \ - .uV_step = MAX77836_REGULATOR_LDO_VOLTAGE_STEP, \ - .enable_reg = MAX77836_LDO_REG_CNFG1_LDO ## num, \ - .enable_mask = MAX77836_CNFG1_LDO_PWRMD_MASK, \ - .vsel_reg = MAX77836_LDO_REG_CNFG1_LDO ## num, \ - .vsel_mask = MAX77836_CNFG1_LDO_TV_MASK, \ -} - -static const struct regulator_desc max77836_supported_regulators[] = { - [MAX14577_SAFEOUT] = MAX14577_SAFEOUT_REG, - [MAX14577_CHARGER] = MAX14577_CHARGER_REG, - [MAX77836_LDO1] = MAX77836_LDO_REG(1), - [MAX77836_LDO2] = MAX77836_LDO_REG(2), -}; - -#ifdef CONFIG_OF -static struct of_regulator_match max14577_regulator_matches[] = { - { .name = "SAFEOUT", }, - { .name = "CHARGER", }, -}; - -static struct of_regulator_match max77836_regulator_matches[] = { - { .name = "SAFEOUT", }, - { .name = "CHARGER", }, - { .name = "LDO1", }, - { .name = "LDO2", }, -}; - -static inline struct regulator_init_data *match_init_data(int index, - enum maxim_device_type dev_type) -{ - switch (dev_type) { - case MAXIM_DEVICE_TYPE_MAX77836: - return max77836_regulator_matches[index].init_data; - - case MAXIM_DEVICE_TYPE_MAX14577: - default: - return max14577_regulator_matches[index].init_data; - } -} - -static inline struct device_node *match_of_node(int index, - enum maxim_device_type dev_type) -{ - switch (dev_type) { - case MAXIM_DEVICE_TYPE_MAX77836: - return max77836_regulator_matches[index].of_node; - - case MAXIM_DEVICE_TYPE_MAX14577: - default: - return max14577_regulator_matches[index].of_node; - } -} -#else /* CONFIG_OF */ -static inline struct regulator_init_data *match_init_data(int index, - enum maxim_device_type dev_type) -{ - return NULL; -} - -static inline struct device_node *match_of_node(int index, - enum maxim_device_type dev_type) -{ - return NULL; -} -#endif /* CONFIG_OF */ - -/** - * Registers for regulators of max77836 use different I2C slave addresses so - * different regmaps must be used for them. - * - * Returns proper regmap for accessing regulator passed by id. - */ -static struct regmap *max14577_get_regmap(struct max14577 *max14577, - int reg_id) -{ - switch (max14577->dev_type) { - case MAXIM_DEVICE_TYPE_MAX77836: - switch (reg_id) { - case MAX77836_SAFEOUT ... MAX77836_CHARGER: - return max14577->regmap; - default: - /* MAX77836_LDO1 ... MAX77836_LDO2 */ - return max14577->regmap_pmic; - } - - case MAXIM_DEVICE_TYPE_MAX14577: - default: - return max14577->regmap; - } -} - -static int max14577_regulator_probe(struct platform_device *pdev) -{ - struct max14577 *max14577 = dev_get_drvdata(pdev->dev.parent); - struct max14577_platform_data *pdata = dev_get_platdata(max14577->dev); - int i, ret = 0; - struct regulator_config config = {}; - const struct regulator_desc *supported_regulators; - unsigned int supported_regulators_size; - enum maxim_device_type dev_type = max14577->dev_type; - - switch (dev_type) { - case MAXIM_DEVICE_TYPE_MAX77836: - supported_regulators = max77836_supported_regulators; - supported_regulators_size = ARRAY_SIZE(max77836_supported_regulators); - break; - case MAXIM_DEVICE_TYPE_MAX14577: - default: - supported_regulators = max14577_supported_regulators; - supported_regulators_size = ARRAY_SIZE(max14577_supported_regulators); - } - - config.dev = max14577->dev; - config.driver_data = max14577; - - for (i = 0; i < supported_regulators_size; i++) { - struct regulator_dev *regulator; - /* - * Index of supported_regulators[] is also the id and must - * match index of pdata->regulators[]. - */ - if (pdata && pdata->regulators) { - config.init_data = pdata->regulators[i].initdata; - config.of_node = pdata->regulators[i].of_node; - } else { - config.init_data = match_init_data(i, dev_type); - config.of_node = match_of_node(i, dev_type); - } - config.regmap = max14577_get_regmap(max14577, - supported_regulators[i].id); - - regulator = devm_regulator_register(&pdev->dev, - &supported_regulators[i], &config); - if (IS_ERR(regulator)) { - ret = PTR_ERR(regulator); - dev_err(&pdev->dev, - "Regulator init failed for %d/%s with error: %d\n", - i, supported_regulators[i].name, ret); - return ret; - } - } - - return ret; -} - -static const struct platform_device_id max14577_regulator_id[] = { - { "max14577-regulator", MAXIM_DEVICE_TYPE_MAX14577, }, - { "max77836-regulator", MAXIM_DEVICE_TYPE_MAX77836, }, - { } -}; -MODULE_DEVICE_TABLE(platform, max14577_regulator_id); - -static struct platform_driver max14577_regulator_driver = { - .driver = { - .name = "max14577-regulator", - }, - .probe = max14577_regulator_probe, - .id_table = max14577_regulator_id, -}; - -static int __init max14577_regulator_init(void) -{ - BUILD_BUG_ON(ARRAY_SIZE(max14577_supported_regulators) != MAX14577_REGULATOR_NUM); - BUILD_BUG_ON(ARRAY_SIZE(max77836_supported_regulators) != MAX77836_REGULATOR_NUM); - - BUILD_BUG_ON(MAX77836_REGULATOR_LDO_VOLTAGE_MIN + - (MAX77836_REGULATOR_LDO_VOLTAGE_STEP * - (MAX77836_REGULATOR_LDO_VOLTAGE_STEPS_NUM - 1)) != - MAX77836_REGULATOR_LDO_VOLTAGE_MAX); - - return platform_driver_register(&max14577_regulator_driver); -} -subsys_initcall(max14577_regulator_init); - -static void __exit max14577_regulator_exit(void) -{ - platform_driver_unregister(&max14577_regulator_driver); -} -module_exit(max14577_regulator_exit); - -MODULE_AUTHOR("Krzysztof Kozlowski <k.kozlowski@samsung.com>"); -MODULE_DESCRIPTION("Maxim 14577/77836 regulator driver"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:max14577-regulator"); |