From 86cf635a316e89ba6ae79f452cedb5acddccf570 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Thu, 17 Mar 2016 14:54:54 -0300 Subject: regulator: Rename files for Maxim PMIC drivers Most Maxim PMIC regulator drivers are for sub-devices of Multi-Function Devices with drivers under drivers/mfd. But for many of these, the same object file name was used for both the MFD and the regulator drivers. Having 2 different drivers with the same name causes a lot of confusion to Kbuild, specially if these are built as module since only one module will be installed and also exported symbols will be undefined due being overwritten by the other module during modpost. For example, it fixes the following issue when both drivers are module: $ make M=drivers/regulator/ ... CC [M] drivers/regulator//max14577.o Building modules, stage 2. MODPOST 1 modules WARNING: "maxim_charger_calc_reg_current" [drivers/regulator//max14577.ko] undefined! WARNING: "maxim_charger_currents" [drivers/regulator//max14577.ko] undefined! Reported-by: Chanwoo Choi Signed-off-by: Javier Martinez Canillas Reviewed-by: Chanwoo Choi Signed-off-by: Mark Brown diff --git a/MAINTAINERS b/MAINTAINERS index 03e00c7..e0b7b59 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7019,9 +7019,9 @@ M: Chanwoo Choi M: Krzysztof Kozlowski L: linux-kernel@vger.kernel.org S: Supported -F: drivers/*/max14577.c +F: drivers/*/max14577*.c F: drivers/*/max77686*.c -F: drivers/*/max77693.c +F: drivers/*/max77693*.c F: drivers/extcon/extcon-max14577.c F: drivers/extcon/extcon-max77693.c F: drivers/rtc/rtc-max77686.c diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index 61bfbb9..8018b2e 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -46,7 +46,7 @@ obj-$(CONFIG_REGULATOR_LP8788) += lp8788-buck.o obj-$(CONFIG_REGULATOR_LP8788) += lp8788-ldo.o obj-$(CONFIG_REGULATOR_LP8755) += lp8755.o obj-$(CONFIG_REGULATOR_LTC3589) += ltc3589.o -obj-$(CONFIG_REGULATOR_MAX14577) += max14577.o +obj-$(CONFIG_REGULATOR_MAX14577) += max14577-regulator.o obj-$(CONFIG_REGULATOR_MAX1586) += max1586.o obj-$(CONFIG_REGULATOR_MAX77620) += max77620-regulator.o obj-$(CONFIG_REGULATOR_MAX8649) += max8649.o @@ -55,10 +55,10 @@ obj-$(CONFIG_REGULATOR_MAX8907) += max8907-regulator.o obj-$(CONFIG_REGULATOR_MAX8925) += max8925-regulator.o obj-$(CONFIG_REGULATOR_MAX8952) += max8952.o obj-$(CONFIG_REGULATOR_MAX8973) += max8973-regulator.o -obj-$(CONFIG_REGULATOR_MAX8997) += max8997.o +obj-$(CONFIG_REGULATOR_MAX8997) += max8997-regulator.o obj-$(CONFIG_REGULATOR_MAX8998) += max8998.o obj-$(CONFIG_REGULATOR_MAX77686) += max77686-regulator.o -obj-$(CONFIG_REGULATOR_MAX77693) += max77693.o +obj-$(CONFIG_REGULATOR_MAX77693) += max77693-regulator.o obj-$(CONFIG_REGULATOR_MAX77802) += max77802-regulator.o obj-$(CONFIG_REGULATOR_MC13783) += mc13783-regulator.o obj-$(CONFIG_REGULATOR_MC13892) += mc13892-regulator.o diff --git a/drivers/regulator/max14577-regulator.c b/drivers/regulator/max14577-regulator.c new file mode 100644 index 0000000..b2daa66 --- /dev/null +++ b/drivers/regulator/max14577-regulator.c @@ -0,0 +1,337 @@ +/* + * max14577.c - Regulator driver for the Maxim 14577/77836 + * + * Copyright (C) 2013,2014 Samsung Electronics + * Krzysztof Kozlowski + * + * 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 +#include +#include +#include +#include +#include + +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 "); +MODULE_DESCRIPTION("Maxim 14577/77836 regulator driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:max14577-regulator"); diff --git a/drivers/regulator/max14577.c b/drivers/regulator/max14577.c deleted file mode 100644 index b2daa66..0000000 --- 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 - * - * 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 -#include -#include -#include -#include -#include - -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 "); -MODULE_DESCRIPTION("Maxim 14577/77836 regulator driver"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:max14577-regulator"); diff --git a/drivers/regulator/max77693-regulator.c b/drivers/regulator/max77693-regulator.c new file mode 100644 index 0000000..de730fd --- /dev/null +++ b/drivers/regulator/max77693-regulator.c @@ -0,0 +1,318 @@ +/* + * max77693.c - Regulator driver for the Maxim 77693 and 77843 + * + * Copyright (C) 2013-2015 Samsung Electronics + * Jonghwa Lee + * Krzysztof Kozlowski + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* + * 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 "); +MODULE_AUTHOR("Krzysztof Kozlowski "); +MODULE_LICENSE("GPL"); diff --git a/drivers/regulator/max77693.c b/drivers/regulator/max77693.c deleted file mode 100644 index de730fd..0000000 --- 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 - * Krzysztof Kozlowski - * - * 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 -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -/* - * 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 "); -MODULE_AUTHOR("Krzysztof Kozlowski "); -MODULE_LICENSE("GPL"); diff --git a/drivers/regulator/max8997-regulator.c b/drivers/regulator/max8997-regulator.c new file mode 100644 index 0000000..ea0196d --- /dev/null +++ b/drivers/regulator/max8997-regulator.c @@ -0,0 +1,1241 @@ +/* + * max8997.c - Regulator driver for the Maxim 8997/8966 + * + * Copyright (C) 2011 Samsung Electronics + * MyungJoo Ham + * + * 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 max8998.c + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct max8997_data { + struct device *dev; + struct max8997_dev *iodev; + int num_regulators; + int ramp_delay; /* in mV/us */ + + bool buck1_gpiodvs; + bool buck2_gpiodvs; + bool buck5_gpiodvs; + u8 buck1_vol[8]; + u8 buck2_vol[8]; + u8 buck5_vol[8]; + int buck125_gpios[3]; + int buck125_gpioindex; + bool ignore_gpiodvs_side_effect; + + u8 saved_states[MAX8997_REG_MAX]; +}; + +static const unsigned int safeoutvolt[] = { + 4850000, + 4900000, + 4950000, + 3300000, +}; + +static inline void max8997_set_gpio(struct max8997_data *max8997) +{ + int set3 = (max8997->buck125_gpioindex) & 0x1; + int set2 = ((max8997->buck125_gpioindex) >> 1) & 0x1; + int set1 = ((max8997->buck125_gpioindex) >> 2) & 0x1; + + gpio_set_value(max8997->buck125_gpios[0], set1); + gpio_set_value(max8997->buck125_gpios[1], set2); + gpio_set_value(max8997->buck125_gpios[2], set3); +} + +struct voltage_map_desc { + int min; + int max; + int step; +}; + +/* Voltage maps in uV */ +static const struct voltage_map_desc ldo_voltage_map_desc = { + .min = 800000, .max = 3950000, .step = 50000, +}; /* LDO1 ~ 18, 21 all */ + +static const struct voltage_map_desc buck1245_voltage_map_desc = { + .min = 650000, .max = 2225000, .step = 25000, +}; /* Buck1, 2, 4, 5 */ + +static const struct voltage_map_desc buck37_voltage_map_desc = { + .min = 750000, .max = 3900000, .step = 50000, +}; /* Buck3, 7 */ + +/* current map in uA */ +static const struct voltage_map_desc charger_current_map_desc = { + .min = 200000, .max = 950000, .step = 50000, +}; + +static const struct voltage_map_desc topoff_current_map_desc = { + .min = 50000, .max = 200000, .step = 10000, +}; + +static const struct voltage_map_desc *reg_voltage_map[] = { + [MAX8997_LDO1] = &ldo_voltage_map_desc, + [MAX8997_LDO2] = &ldo_voltage_map_desc, + [MAX8997_LDO3] = &ldo_voltage_map_desc, + [MAX8997_LDO4] = &ldo_voltage_map_desc, + [MAX8997_LDO5] = &ldo_voltage_map_desc, + [MAX8997_LDO6] = &ldo_voltage_map_desc, + [MAX8997_LDO7] = &ldo_voltage_map_desc, + [MAX8997_LDO8] = &ldo_voltage_map_desc, + [MAX8997_LDO9] = &ldo_voltage_map_desc, + [MAX8997_LDO10] = &ldo_voltage_map_desc, + [MAX8997_LDO11] = &ldo_voltage_map_desc, + [MAX8997_LDO12] = &ldo_voltage_map_desc, + [MAX8997_LDO13] = &ldo_voltage_map_desc, + [MAX8997_LDO14] = &ldo_voltage_map_desc, + [MAX8997_LDO15] = &ldo_voltage_map_desc, + [MAX8997_LDO16] = &ldo_voltage_map_desc, + [MAX8997_LDO17] = &ldo_voltage_map_desc, + [MAX8997_LDO18] = &ldo_voltage_map_desc, + [MAX8997_LDO21] = &ldo_voltage_map_desc, + [MAX8997_BUCK1] = &buck1245_voltage_map_desc, + [MAX8997_BUCK2] = &buck1245_voltage_map_desc, + [MAX8997_BUCK3] = &buck37_voltage_map_desc, + [MAX8997_BUCK4] = &buck1245_voltage_map_desc, + [MAX8997_BUCK5] = &buck1245_voltage_map_desc, + [MAX8997_BUCK6] = NULL, + [MAX8997_BUCK7] = &buck37_voltage_map_desc, + [MAX8997_EN32KHZ_AP] = NULL, + [MAX8997_EN32KHZ_CP] = NULL, + [MAX8997_ENVICHG] = NULL, + [MAX8997_ESAFEOUT1] = NULL, + [MAX8997_ESAFEOUT2] = NULL, + [MAX8997_CHARGER_CV] = NULL, + [MAX8997_CHARGER] = &charger_current_map_desc, + [MAX8997_CHARGER_TOPOFF] = &topoff_current_map_desc, +}; + +static int max8997_list_voltage_charger_cv(struct regulator_dev *rdev, + unsigned int selector) +{ + int rid = rdev_get_id(rdev); + + if (rid != MAX8997_CHARGER_CV) + goto err; + + switch (selector) { + case 0x00: + return 4200000; + case 0x01 ... 0x0E: + return 4000000 + 20000 * (selector - 0x01); + case 0x0F: + return 4350000; + default: + return -EINVAL; + } +err: + return -EINVAL; +} + +static int max8997_list_voltage(struct regulator_dev *rdev, + unsigned int selector) +{ + const struct voltage_map_desc *desc; + int rid = rdev_get_id(rdev); + int val; + + if (rid >= ARRAY_SIZE(reg_voltage_map) || + rid < 0) + return -EINVAL; + + desc = reg_voltage_map[rid]; + if (desc == NULL) + return -EINVAL; + + val = desc->min + desc->step * selector; + if (val > desc->max) + return -EINVAL; + + return val; +} + +static int max8997_get_enable_register(struct regulator_dev *rdev, + int *reg, int *mask, int *pattern) +{ + int rid = rdev_get_id(rdev); + + switch (rid) { + case MAX8997_LDO1 ... MAX8997_LDO21: + *reg = MAX8997_REG_LDO1CTRL + (rid - MAX8997_LDO1); + *mask = 0xC0; + *pattern = 0xC0; + break; + case MAX8997_BUCK1: + *reg = MAX8997_REG_BUCK1CTRL; + *mask = 0x01; + *pattern = 0x01; + break; + case MAX8997_BUCK2: + *reg = MAX8997_REG_BUCK2CTRL; + *mask = 0x01; + *pattern = 0x01; + break; + case MAX8997_BUCK3: + *reg = MAX8997_REG_BUCK3CTRL; + *mask = 0x01; + *pattern = 0x01; + break; + case MAX8997_BUCK4: + *reg = MAX8997_REG_BUCK4CTRL; + *mask = 0x01; + *pattern = 0x01; + break; + case MAX8997_BUCK5: + *reg = MAX8997_REG_BUCK5CTRL; + *mask = 0x01; + *pattern = 0x01; + break; + case MAX8997_BUCK6: + *reg = MAX8997_REG_BUCK6CTRL; + *mask = 0x01; + *pattern = 0x01; + break; + case MAX8997_BUCK7: + *reg = MAX8997_REG_BUCK7CTRL; + *mask = 0x01; + *pattern = 0x01; + break; + case MAX8997_EN32KHZ_AP ... MAX8997_EN32KHZ_CP: + *reg = MAX8997_REG_MAINCON1; + *mask = 0x01 << (rid - MAX8997_EN32KHZ_AP); + *pattern = 0x01 << (rid - MAX8997_EN32KHZ_AP); + break; + case MAX8997_ENVICHG: + *reg = MAX8997_REG_MBCCTRL1; + *mask = 0x80; + *pattern = 0x80; + break; + case MAX8997_ESAFEOUT1 ... MAX8997_ESAFEOUT2: + *reg = MAX8997_REG_SAFEOUTCTRL; + *mask = 0x40 << (rid - MAX8997_ESAFEOUT1); + *pattern = 0x40 << (rid - MAX8997_ESAFEOUT1); + break; + case MAX8997_CHARGER: + *reg = MAX8997_REG_MBCCTRL2; + *mask = 0x40; + *pattern = 0x40; + break; + default: + /* Not controllable or not exists */ + return -EINVAL; + } + + return 0; +} + +static int max8997_reg_is_enabled(struct regulator_dev *rdev) +{ + struct max8997_data *max8997 = rdev_get_drvdata(rdev); + struct i2c_client *i2c = max8997->iodev->i2c; + int ret, reg, mask, pattern; + u8 val; + + ret = max8997_get_enable_register(rdev, ®, &mask, &pattern); + if (ret) + return ret; + + ret = max8997_read_reg(i2c, reg, &val); + if (ret) + return ret; + + return (val & mask) == pattern; +} + +static int max8997_reg_enable(struct regulator_dev *rdev) +{ + struct max8997_data *max8997 = rdev_get_drvdata(rdev); + struct i2c_client *i2c = max8997->iodev->i2c; + int ret, reg, mask, pattern; + + ret = max8997_get_enable_register(rdev, ®, &mask, &pattern); + if (ret) + return ret; + + return max8997_update_reg(i2c, reg, pattern, mask); +} + +static int max8997_reg_disable(struct regulator_dev *rdev) +{ + struct max8997_data *max8997 = rdev_get_drvdata(rdev); + struct i2c_client *i2c = max8997->iodev->i2c; + int ret, reg, mask, pattern; + + ret = max8997_get_enable_register(rdev, ®, &mask, &pattern); + if (ret) + return ret; + + return max8997_update_reg(i2c, reg, ~pattern, mask); +} + +static int max8997_get_voltage_register(struct regulator_dev *rdev, + int *_reg, int *_shift, int *_mask) +{ + struct max8997_data *max8997 = rdev_get_drvdata(rdev); + int rid = rdev_get_id(rdev); + int reg, shift = 0, mask = 0x3f; + + switch (rid) { + case MAX8997_LDO1 ... MAX8997_LDO21: + reg = MAX8997_REG_LDO1CTRL + (rid - MAX8997_LDO1); + break; + case MAX8997_BUCK1: + reg = MAX8997_REG_BUCK1DVS1; + if (max8997->buck1_gpiodvs) + reg += max8997->buck125_gpioindex; + break; + case MAX8997_BUCK2: + reg = MAX8997_REG_BUCK2DVS1; + if (max8997->buck2_gpiodvs) + reg += max8997->buck125_gpioindex; + break; + case MAX8997_BUCK3: + reg = MAX8997_REG_BUCK3DVS; + break; + case MAX8997_BUCK4: + reg = MAX8997_REG_BUCK4DVS; + break; + case MAX8997_BUCK5: + reg = MAX8997_REG_BUCK5DVS1; + if (max8997->buck5_gpiodvs) + reg += max8997->buck125_gpioindex; + break; + case MAX8997_BUCK7: + reg = MAX8997_REG_BUCK7DVS; + break; + case MAX8997_ESAFEOUT1 ... MAX8997_ESAFEOUT2: + reg = MAX8997_REG_SAFEOUTCTRL; + shift = (rid == MAX8997_ESAFEOUT2) ? 2 : 0; + mask = 0x3; + break; + case MAX8997_CHARGER_CV: + reg = MAX8997_REG_MBCCTRL3; + shift = 0; + mask = 0xf; + break; + case MAX8997_CHARGER: + reg = MAX8997_REG_MBCCTRL4; + shift = 0; + mask = 0xf; + break; + case MAX8997_CHARGER_TOPOFF: + reg = MAX8997_REG_MBCCTRL5; + shift = 0; + mask = 0xf; + break; + default: + return -EINVAL; + } + + *_reg = reg; + *_shift = shift; + *_mask = mask; + + return 0; +} + +static int max8997_get_voltage_sel(struct regulator_dev *rdev) +{ + struct max8997_data *max8997 = rdev_get_drvdata(rdev); + struct i2c_client *i2c = max8997->iodev->i2c; + int reg, shift, mask, ret; + u8 val; + + ret = max8997_get_voltage_register(rdev, ®, &shift, &mask); + if (ret) + return ret; + + ret = max8997_read_reg(i2c, reg, &val); + if (ret) + return ret; + + val >>= shift; + val &= mask; + + return val; +} + +static inline int max8997_get_voltage_proper_val( + const struct voltage_map_desc *desc, + int min_vol, int max_vol) +{ + int i; + + if (desc == NULL) + return -EINVAL; + + if (max_vol < desc->min || min_vol > desc->max) + return -EINVAL; + + if (min_vol < desc->min) + min_vol = desc->min; + + i = DIV_ROUND_UP(min_vol - desc->min, desc->step); + + if (desc->min + desc->step * i > max_vol) + return -EINVAL; + + return i; +} + +static int max8997_set_voltage_charger_cv(struct regulator_dev *rdev, + int min_uV, int max_uV, unsigned *selector) +{ + struct max8997_data *max8997 = rdev_get_drvdata(rdev); + struct i2c_client *i2c = max8997->iodev->i2c; + int rid = rdev_get_id(rdev); + int lb, ub; + int reg, shift = 0, mask, ret = 0; + u8 val = 0x0; + + if (rid != MAX8997_CHARGER_CV) + return -EINVAL; + + ret = max8997_get_voltage_register(rdev, ®, &shift, &mask); + if (ret) + return ret; + + if (max_uV < 4000000 || min_uV > 4350000) + return -EINVAL; + + if (min_uV <= 4000000) { + if (max_uV >= 4000000) + return -EINVAL; + else + val = 0x1; + } else if (min_uV <= 4200000 && max_uV >= 4200000) + val = 0x0; + else { + lb = (min_uV - 4000001) / 20000 + 2; + ub = (max_uV - 4000000) / 20000 + 1; + + if (lb > ub) + return -EINVAL; + + if (lb < 0xf) + val = lb; + else { + if (ub >= 0xf) + val = 0xf; + else + return -EINVAL; + } + } + + *selector = val; + + ret = max8997_update_reg(i2c, reg, val << shift, mask); + + return ret; +} + +/* + * For LDO1 ~ LDO21, BUCK1~5, BUCK7, CHARGER, CHARGER_TOPOFF + * BUCK1, 2, and 5 are available if they are not controlled by gpio + */ +static int max8997_set_voltage_ldobuck(struct regulator_dev *rdev, + int min_uV, int max_uV, unsigned *selector) +{ + struct max8997_data *max8997 = rdev_get_drvdata(rdev); + struct i2c_client *i2c = max8997->iodev->i2c; + const struct voltage_map_desc *desc; + int rid = rdev_get_id(rdev); + int i, reg, shift, mask, ret; + + switch (rid) { + case MAX8997_LDO1 ... MAX8997_LDO21: + break; + case MAX8997_BUCK1 ... MAX8997_BUCK5: + break; + case MAX8997_BUCK6: + return -EINVAL; + case MAX8997_BUCK7: + break; + case MAX8997_CHARGER: + break; + case MAX8997_CHARGER_TOPOFF: + break; + default: + return -EINVAL; + } + + desc = reg_voltage_map[rid]; + + i = max8997_get_voltage_proper_val(desc, min_uV, max_uV); + if (i < 0) + return i; + + ret = max8997_get_voltage_register(rdev, ®, &shift, &mask); + if (ret) + return ret; + + ret = max8997_update_reg(i2c, reg, i << shift, mask << shift); + *selector = i; + + return ret; +} + +static int max8997_set_voltage_buck_time_sel(struct regulator_dev *rdev, + unsigned int old_selector, + unsigned int new_selector) +{ + struct max8997_data *max8997 = rdev_get_drvdata(rdev); + int rid = rdev_get_id(rdev); + const struct voltage_map_desc *desc = reg_voltage_map[rid]; + + /* Delay is required only if the voltage is increasing */ + if (old_selector >= new_selector) + return 0; + + /* No need to delay if gpio_dvs_mode */ + switch (rid) { + case MAX8997_BUCK1: + if (max8997->buck1_gpiodvs) + return 0; + break; + case MAX8997_BUCK2: + if (max8997->buck2_gpiodvs) + return 0; + break; + case MAX8997_BUCK5: + if (max8997->buck5_gpiodvs) + return 0; + break; + } + + switch (rid) { + case MAX8997_BUCK1: + case MAX8997_BUCK2: + case MAX8997_BUCK4: + case MAX8997_BUCK5: + return DIV_ROUND_UP(desc->step * (new_selector - old_selector), + max8997->ramp_delay * 1000); + } + + return 0; +} + +/* + * Assess the damage on the voltage setting of BUCK1,2,5 by the change. + * + * When GPIO-DVS mode is used for multiple bucks, changing the voltage value + * of one of the bucks may affect that of another buck, which is the side + * effect of the change (set_voltage). This function examines the GPIO-DVS + * configurations and checks whether such side-effect exists. + */ +static int max8997_assess_side_effect(struct regulator_dev *rdev, + u8 new_val, int *best) +{ + struct max8997_data *max8997 = rdev_get_drvdata(rdev); + int rid = rdev_get_id(rdev); + u8 *buckx_val[3]; + bool buckx_gpiodvs[3]; + int side_effect[8]; + int min_side_effect = INT_MAX; + int i; + + *best = -1; + + switch (rid) { + case MAX8997_BUCK1: + rid = 0; + break; + case MAX8997_BUCK2: + rid = 1; + break; + case MAX8997_BUCK5: + rid = 2; + break; + default: + return -EINVAL; + } + + buckx_val[0] = max8997->buck1_vol; + buckx_val[1] = max8997->buck2_vol; + buckx_val[2] = max8997->buck5_vol; + buckx_gpiodvs[0] = max8997->buck1_gpiodvs; + buckx_gpiodvs[1] = max8997->buck2_gpiodvs; + buckx_gpiodvs[2] = max8997->buck5_gpiodvs; + + for (i = 0; i < 8; i++) { + int others; + + if (new_val != (buckx_val[rid])[i]) { + side_effect[i] = -1; + continue; + } + + side_effect[i] = 0; + for (others = 0; others < 3; others++) { + int diff; + + if (others == rid) + continue; + if (buckx_gpiodvs[others] == false) + continue; /* Not affected */ + diff = (buckx_val[others])[i] - + (buckx_val[others])[max8997->buck125_gpioindex]; + if (diff > 0) + side_effect[i] += diff; + else if (diff < 0) + side_effect[i] -= diff; + } + if (side_effect[i] == 0) { + *best = i; + return 0; /* NO SIDE EFFECT! Use This! */ + } + if (side_effect[i] < min_side_effect) { + min_side_effect = side_effect[i]; + *best = i; + } + } + + if (*best == -1) + return -EINVAL; + + return side_effect[*best]; +} + +/* + * For Buck 1 ~ 5 and 7. If it is not controlled by GPIO, this calls + * max8997_set_voltage_ldobuck to do the job. + */ +static int max8997_set_voltage_buck(struct regulator_dev *rdev, + int min_uV, int max_uV, unsigned *selector) +{ + struct max8997_data *max8997 = rdev_get_drvdata(rdev); + int rid = rdev_get_id(rdev); + const struct voltage_map_desc *desc; + int new_val, new_idx, damage, tmp_val, tmp_idx, tmp_dmg; + bool gpio_dvs_mode = false; + + if (rid < MAX8997_BUCK1 || rid > MAX8997_BUCK7) + return -EINVAL; + + switch (rid) { + case MAX8997_BUCK1: + if (max8997->buck1_gpiodvs) + gpio_dvs_mode = true; + break; + case MAX8997_BUCK2: + if (max8997->buck2_gpiodvs) + gpio_dvs_mode = true; + break; + case MAX8997_BUCK5: + if (max8997->buck5_gpiodvs) + gpio_dvs_mode = true; + break; + } + + if (!gpio_dvs_mode) + return max8997_set_voltage_ldobuck(rdev, min_uV, max_uV, + selector); + + desc = reg_voltage_map[rid]; + new_val = max8997_get_voltage_proper_val(desc, min_uV, max_uV); + if (new_val < 0) + return new_val; + + tmp_dmg = INT_MAX; + tmp_idx = -1; + tmp_val = -1; + do { + damage = max8997_assess_side_effect(rdev, new_val, &new_idx); + if (damage == 0) + goto out; + + if (tmp_dmg > damage) { + tmp_idx = new_idx; + tmp_val = new_val; + tmp_dmg = damage; + } + + new_val++; + } while (desc->min + desc->step * new_val <= desc->max); + + new_idx = tmp_idx; + new_val = tmp_val; + + if (max8997->ignore_gpiodvs_side_effect == false) + return -EINVAL; + + dev_warn(&rdev->dev, + "MAX8997 GPIO-DVS Side Effect Warning: GPIO SET: %d -> %d\n", + max8997->buck125_gpioindex, tmp_idx); + +out: + if (new_idx < 0 || new_val < 0) + return -EINVAL; + + max8997->buck125_gpioindex = new_idx; + max8997_set_gpio(max8997); + *selector = new_val; + + return 0; +} + +/* For SAFEOUT1 and SAFEOUT2 */ +static int max8997_set_voltage_safeout_sel(struct regulator_dev *rdev, + unsigned selector) +{ + struct max8997_data *max8997 = rdev_get_drvdata(rdev); + struct i2c_client *i2c = max8997->iodev->i2c; + int rid = rdev_get_id(rdev); + int reg, shift = 0, mask, ret; + + if (rid != MAX8997_ESAFEOUT1 && rid != MAX8997_ESAFEOUT2) + return -EINVAL; + + ret = max8997_get_voltage_register(rdev, ®, &shift, &mask); + if (ret) + return ret; + + return max8997_update_reg(i2c, reg, selector << shift, mask << shift); +} + +static int max8997_reg_disable_suspend(struct regulator_dev *rdev) +{ + struct max8997_data *max8997 = rdev_get_drvdata(rdev); + struct i2c_client *i2c = max8997->iodev->i2c; + int ret, reg, mask, pattern; + int rid = rdev_get_id(rdev); + + ret = max8997_get_enable_register(rdev, ®, &mask, &pattern); + if (ret) + return ret; + + max8997_read_reg(i2c, reg, &max8997->saved_states[rid]); + + if (rid == MAX8997_LDO1 || + rid == MAX8997_LDO10 || + rid == MAX8997_LDO21) { + dev_dbg(&rdev->dev, "Conditional Power-Off for %s\n", + rdev->desc->name); + return max8997_update_reg(i2c, reg, 0x40, mask); + } + + dev_dbg(&rdev->dev, "Full Power-Off for %s (%xh -> %xh)\n", + rdev->desc->name, max8997->saved_states[rid] & mask, + (~pattern) & mask); + return max8997_update_reg(i2c, reg, ~pattern, mask); +} + +static struct regulator_ops max8997_ldo_ops = { + .list_voltage = max8997_list_voltage, + .is_enabled = max8997_reg_is_enabled, + .enable = max8997_reg_enable, + .disable = max8997_reg_disable, + .get_voltage_sel = max8997_get_voltage_sel, + .set_voltage = max8997_set_voltage_ldobuck, + .set_suspend_disable = max8997_reg_disable_suspend, +}; + +static struct regulator_ops max8997_buck_ops = { + .list_voltage = max8997_list_voltage, + .is_enabled = max8997_reg_is_enabled, + .enable = max8997_reg_enable, + .disable = max8997_reg_disable, + .get_voltage_sel = max8997_get_voltage_sel, + .set_voltage = max8997_set_voltage_buck, + .set_voltage_time_sel = max8997_set_voltage_buck_time_sel, + .set_suspend_disable = max8997_reg_disable_suspend, +}; + +static struct regulator_ops max8997_fixedvolt_ops = { + .list_voltage = max8997_list_voltage, + .is_enabled = max8997_reg_is_enabled, + .enable = max8997_reg_enable, + .disable = max8997_reg_disable, + .set_suspend_disable = max8997_reg_disable_suspend, +}; + +static struct regulator_ops max8997_safeout_ops = { + .list_voltage = regulator_list_voltage_table, + .is_enabled = max8997_reg_is_enabled, + .enable = max8997_reg_enable, + .disable = max8997_reg_disable, + .get_voltage_sel = max8997_get_voltage_sel, + .set_voltage_sel = max8997_set_voltage_safeout_sel, + .set_suspend_disable = max8997_reg_disable_suspend, +}; + +static struct regulator_ops max8997_fixedstate_ops = { + .list_voltage = max8997_list_voltage_charger_cv, + .get_voltage_sel = max8997_get_voltage_sel, + .set_voltage = max8997_set_voltage_charger_cv, +}; + +static int max8997_set_current_limit(struct regulator_dev *rdev, + int min_uA, int max_uA) +{ + unsigned dummy; + int rid = rdev_get_id(rdev); + + if (rid != MAX8997_CHARGER && rid != MAX8997_CHARGER_TOPOFF) + return -EINVAL; + + /* Reuse max8997_set_voltage_ldobuck to set current_limit. */ + return max8997_set_voltage_ldobuck(rdev, min_uA, max_uA, &dummy); +} + +static int max8997_get_current_limit(struct regulator_dev *rdev) +{ + int sel, rid = rdev_get_id(rdev); + + if (rid != MAX8997_CHARGER && rid != MAX8997_CHARGER_TOPOFF) + return -EINVAL; + + sel = max8997_get_voltage_sel(rdev); + if (sel < 0) + return sel; + + /* Reuse max8997_list_voltage to get current_limit. */ + return max8997_list_voltage(rdev, sel); +} + +static struct regulator_ops max8997_charger_ops = { + .is_enabled = max8997_reg_is_enabled, + .enable = max8997_reg_enable, + .disable = max8997_reg_disable, + .get_current_limit = max8997_get_current_limit, + .set_current_limit = max8997_set_current_limit, +}; + +static struct regulator_ops max8997_charger_fixedstate_ops = { + .get_current_limit = max8997_get_current_limit, + .set_current_limit = max8997_set_current_limit, +}; + +#define MAX8997_VOLTAGE_REGULATOR(_name, _ops) {\ + .name = #_name, \ + .id = MAX8997_##_name, \ + .ops = &_ops, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ +} + +#define MAX8997_CURRENT_REGULATOR(_name, _ops) {\ + .name = #_name, \ + .id = MAX8997_##_name, \ + .ops = &_ops, \ + .type = REGULATOR_CURRENT, \ + .owner = THIS_MODULE, \ +} + +static struct regulator_desc regulators[] = { + MAX8997_VOLTAGE_REGULATOR(LDO1, max8997_ldo_ops), + MAX8997_VOLTAGE_REGULATOR(LDO2, max8997_ldo_ops), + MAX8997_VOLTAGE_REGULATOR(LDO3, max8997_ldo_ops), + MAX8997_VOLTAGE_REGULATOR(LDO4, max8997_ldo_ops), + MAX8997_VOLTAGE_REGULATOR(LDO5, max8997_ldo_ops), + MAX8997_VOLTAGE_REGULATOR(LDO6, max8997_ldo_ops), + MAX8997_VOLTAGE_REGULATOR(LDO7, max8997_ldo_ops), + MAX8997_VOLTAGE_REGULATOR(LDO8, max8997_ldo_ops), + MAX8997_VOLTAGE_REGULATOR(LDO9, max8997_ldo_ops), + MAX8997_VOLTAGE_REGULATOR(LDO10, max8997_ldo_ops), + MAX8997_VOLTAGE_REGULATOR(LDO11, max8997_ldo_ops), + MAX8997_VOLTAGE_REGULATOR(LDO12, max8997_ldo_ops), + MAX8997_VOLTAGE_REGULATOR(LDO13, max8997_ldo_ops), + MAX8997_VOLTAGE_REGULATOR(LDO14, max8997_ldo_ops), + MAX8997_VOLTAGE_REGULATOR(LDO15, max8997_ldo_ops), + MAX8997_VOLTAGE_REGULATOR(LDO16, max8997_ldo_ops), + MAX8997_VOLTAGE_REGULATOR(LDO17, max8997_ldo_ops), + MAX8997_VOLTAGE_REGULATOR(LDO18, max8997_ldo_ops), + MAX8997_VOLTAGE_REGULATOR(LDO21, max8997_ldo_ops), + MAX8997_VOLTAGE_REGULATOR(BUCK1, max8997_buck_ops), + MAX8997_VOLTAGE_REGULATOR(BUCK2, max8997_buck_ops), + MAX8997_VOLTAGE_REGULATOR(BUCK3, max8997_buck_ops), + MAX8997_VOLTAGE_REGULATOR(BUCK4, max8997_buck_ops), + MAX8997_VOLTAGE_REGULATOR(BUCK5, max8997_buck_ops), + MAX8997_VOLTAGE_REGULATOR(BUCK6, max8997_fixedvolt_ops), + MAX8997_VOLTAGE_REGULATOR(BUCK7, max8997_buck_ops), + MAX8997_VOLTAGE_REGULATOR(EN32KHZ_AP, max8997_fixedvolt_ops), + MAX8997_VOLTAGE_REGULATOR(EN32KHZ_CP, max8997_fixedvolt_ops), + MAX8997_VOLTAGE_REGULATOR(ENVICHG, max8997_fixedvolt_ops), + MAX8997_VOLTAGE_REGULATOR(ESAFEOUT1, max8997_safeout_ops), + MAX8997_VOLTAGE_REGULATOR(ESAFEOUT2, max8997_safeout_ops), + MAX8997_VOLTAGE_REGULATOR(CHARGER_CV, max8997_fixedstate_ops), + MAX8997_CURRENT_REGULATOR(CHARGER, max8997_charger_ops), + MAX8997_CURRENT_REGULATOR(CHARGER_TOPOFF, + max8997_charger_fixedstate_ops), +}; + +#ifdef CONFIG_OF +static int max8997_pmic_dt_parse_dvs_gpio(struct platform_device *pdev, + struct max8997_platform_data *pdata, + struct device_node *pmic_np) +{ + int i, gpio; + + for (i = 0; i < 3; i++) { + gpio = of_get_named_gpio(pmic_np, + "max8997,pmic-buck125-dvs-gpios", i); + if (!gpio_is_valid(gpio)) { + dev_err(&pdev->dev, "invalid gpio[%d]: %d\n", i, gpio); + return -EINVAL; + } + pdata->buck125_gpios[i] = gpio; + } + return 0; +} + +static int max8997_pmic_dt_parse_pdata(struct platform_device *pdev, + struct max8997_platform_data *pdata) +{ + struct max8997_dev *iodev = dev_get_drvdata(pdev->dev.parent); + struct device_node *pmic_np, *regulators_np, *reg_np; + struct max8997_regulator_data *rdata; + unsigned int i, dvs_voltage_nr = 1, ret; + + pmic_np = iodev->dev->of_node; + if (!pmic_np) { + dev_err(&pdev->dev, "could not find pmic sub-node\n"); + return -ENODEV; + } + + regulators_np = of_get_child_by_name(pmic_np, "regulators"); + if (!regulators_np) { + dev_err(&pdev->dev, "could not find regulators sub-node\n"); + return -EINVAL; + } + + /* count the number of regulators to be supported in pmic */ + pdata->num_regulators = of_get_child_count(regulators_np); + + rdata = devm_kzalloc(&pdev->dev, sizeof(*rdata) * + pdata->num_regulators, GFP_KERNEL); + if (!rdata) { + of_node_put(regulators_np); + return -ENOMEM; + } + + pdata->regulators = rdata; + for_each_child_of_node(regulators_np, reg_np) { + for (i = 0; i < ARRAY_SIZE(regulators); i++) + if (!of_node_cmp(reg_np->name, regulators[i].name)) + break; + + if (i == ARRAY_SIZE(regulators)) { + dev_warn(&pdev->dev, "don't know how to configure regulator %s\n", + reg_np->name); + continue; + } + + rdata->id = i; + rdata->initdata = of_get_regulator_init_data(&pdev->dev, + reg_np, + ®ulators[i]); + rdata->reg_node = reg_np; + rdata++; + } + of_node_put(regulators_np); + + if (of_get_property(pmic_np, "max8997,pmic-buck1-uses-gpio-dvs", NULL)) + pdata->buck1_gpiodvs = true; + + if (of_get_property(pmic_np, "max8997,pmic-buck2-uses-gpio-dvs", NULL)) + pdata->buck2_gpiodvs = true; + + if (of_get_property(pmic_np, "max8997,pmic-buck5-uses-gpio-dvs", NULL)) + pdata->buck5_gpiodvs = true; + + if (pdata->buck1_gpiodvs || pdata->buck2_gpiodvs || + pdata->buck5_gpiodvs) { + ret = max8997_pmic_dt_parse_dvs_gpio(pdev, pdata, pmic_np); + if (ret) + return -EINVAL; + + if (of_property_read_u32(pmic_np, + "max8997,pmic-buck125-default-dvs-idx", + &pdata->buck125_default_idx)) { + pdata->buck125_default_idx = 0; + } else { + if (pdata->buck125_default_idx >= 8) { + pdata->buck125_default_idx = 0; + dev_info(&pdev->dev, "invalid value for default dvs index, using 0 instead\n"); + } + } + + if (of_get_property(pmic_np, + "max8997,pmic-ignore-gpiodvs-side-effect", NULL)) + pdata->ignore_gpiodvs_side_effect = true; + + dvs_voltage_nr = 8; + } + + if (of_property_read_u32_array(pmic_np, + "max8997,pmic-buck1-dvs-voltage", + pdata->buck1_voltage, dvs_voltage_nr)) { + dev_err(&pdev->dev, "buck1 voltages not specified\n"); + return -EINVAL; + } + + if (of_property_read_u32_array(pmic_np, + "max8997,pmic-buck2-dvs-voltage", + pdata->buck2_voltage, dvs_voltage_nr)) { + dev_err(&pdev->dev, "buck2 voltages not specified\n"); + return -EINVAL; + } + + if (of_property_read_u32_array(pmic_np, + "max8997,pmic-buck5-dvs-voltage", + pdata->buck5_voltage, dvs_voltage_nr)) { + dev_err(&pdev->dev, "buck5 voltages not specified\n"); + return -EINVAL; + } + + return 0; +} +#else +static int max8997_pmic_dt_parse_pdata(struct platform_device *pdev, + struct max8997_platform_data *pdata) +{ + return 0; +} +#endif /* CONFIG_OF */ + +static int max8997_pmic_probe(struct platform_device *pdev) +{ + struct max8997_dev *iodev = dev_get_drvdata(pdev->dev.parent); + struct max8997_platform_data *pdata = iodev->pdata; + struct regulator_config config = { }; + struct regulator_dev *rdev; + struct max8997_data *max8997; + struct i2c_client *i2c; + int i, ret, nr_dvs; + u8 max_buck1 = 0, max_buck2 = 0, max_buck5 = 0; + + if (!pdata) { + dev_err(&pdev->dev, "No platform init data supplied.\n"); + return -ENODEV; + } + + if (iodev->dev->of_node) { + ret = max8997_pmic_dt_parse_pdata(pdev, pdata); + if (ret) + return ret; + } + + max8997 = devm_kzalloc(&pdev->dev, sizeof(struct max8997_data), + GFP_KERNEL); + if (!max8997) + return -ENOMEM; + + max8997->dev = &pdev->dev; + max8997->iodev = iodev; + max8997->num_regulators = pdata->num_regulators; + platform_set_drvdata(pdev, max8997); + i2c = max8997->iodev->i2c; + + max8997->buck125_gpioindex = pdata->buck125_default_idx; + max8997->buck1_gpiodvs = pdata->buck1_gpiodvs; + max8997->buck2_gpiodvs = pdata->buck2_gpiodvs; + max8997->buck5_gpiodvs = pdata->buck5_gpiodvs; + memcpy(max8997->buck125_gpios, pdata->buck125_gpios, sizeof(int) * 3); + max8997->ignore_gpiodvs_side_effect = pdata->ignore_gpiodvs_side_effect; + + nr_dvs = (pdata->buck1_gpiodvs || pdata->buck2_gpiodvs || + pdata->buck5_gpiodvs) ? 8 : 1; + + for (i = 0; i < nr_dvs; i++) { + max8997->buck1_vol[i] = ret = + max8997_get_voltage_proper_val( + &buck1245_voltage_map_desc, + pdata->buck1_voltage[i], + pdata->buck1_voltage[i] + + buck1245_voltage_map_desc.step); + if (ret < 0) + return ret; + + max8997->buck2_vol[i] = ret = + max8997_get_voltage_proper_val( + &buck1245_voltage_map_desc, + pdata->buck2_voltage[i], + pdata->buck2_voltage[i] + + buck1245_voltage_map_desc.step); + if (ret < 0) + return ret; + + max8997->buck5_vol[i] = ret = + max8997_get_voltage_proper_val( + &buck1245_voltage_map_desc, + pdata->buck5_voltage[i], + pdata->buck5_voltage[i] + + buck1245_voltage_map_desc.step); + if (ret < 0) + return ret; + + if (max_buck1 < max8997->buck1_vol[i]) + max_buck1 = max8997->buck1_vol[i]; + if (max_buck2 < max8997->buck2_vol[i]) + max_buck2 = max8997->buck2_vol[i]; + if (max_buck5 < max8997->buck5_vol[i]) + max_buck5 = max8997->buck5_vol[i]; + } + + /* For the safety, set max voltage before setting up */ + for (i = 0; i < 8; i++) { + max8997_update_reg(i2c, MAX8997_REG_BUCK1DVS1 + i, + max_buck1, 0x3f); + max8997_update_reg(i2c, MAX8997_REG_BUCK2DVS1 + i, + max_buck2, 0x3f); + max8997_update_reg(i2c, MAX8997_REG_BUCK5DVS1 + i, + max_buck5, 0x3f); + } + + /* Initialize all the DVS related BUCK registers */ + for (i = 0; i < nr_dvs; i++) { + max8997_update_reg(i2c, MAX8997_REG_BUCK1DVS1 + i, + max8997->buck1_vol[i], + 0x3f); + max8997_update_reg(i2c, MAX8997_REG_BUCK2DVS1 + i, + max8997->buck2_vol[i], + 0x3f); + max8997_update_reg(i2c, MAX8997_REG_BUCK5DVS1 + i, + max8997->buck5_vol[i], + 0x3f); + } + + /* + * If buck 1, 2, and 5 do not care DVS GPIO settings, ignore them. + * If at least one of them cares, set gpios. + */ + if (pdata->buck1_gpiodvs || pdata->buck2_gpiodvs || + pdata->buck5_gpiodvs) { + + if (!gpio_is_valid(pdata->buck125_gpios[0]) || + !gpio_is_valid(pdata->buck125_gpios[1]) || + !gpio_is_valid(pdata->buck125_gpios[2])) { + dev_err(&pdev->dev, "GPIO NOT VALID\n"); + return -EINVAL; + } + + ret = devm_gpio_request(&pdev->dev, pdata->buck125_gpios[0], + "MAX8997 SET1"); + if (ret) + return ret; + + ret = devm_gpio_request(&pdev->dev, pdata->buck125_gpios[1], + "MAX8997 SET2"); + if (ret) + return ret; + + ret = devm_gpio_request(&pdev->dev, pdata->buck125_gpios[2], + "MAX8997 SET3"); + if (ret) + return ret; + + gpio_direction_output(pdata->buck125_gpios[0], + (max8997->buck125_gpioindex >> 2) + & 0x1); /* SET1 */ + gpio_direction_output(pdata->buck125_gpios[1], + (max8997->buck125_gpioindex >> 1) + & 0x1); /* SET2 */ + gpio_direction_output(pdata->buck125_gpios[2], + (max8997->buck125_gpioindex >> 0) + & 0x1); /* SET3 */ + } + + /* DVS-GPIO disabled */ + max8997_update_reg(i2c, MAX8997_REG_BUCK1CTRL, (pdata->buck1_gpiodvs) ? + (1 << 1) : (0 << 1), 1 << 1); + max8997_update_reg(i2c, MAX8997_REG_BUCK2CTRL, (pdata->buck2_gpiodvs) ? + (1 << 1) : (0 << 1), 1 << 1); + max8997_update_reg(i2c, MAX8997_REG_BUCK5CTRL, (pdata->buck5_gpiodvs) ? + (1 << 1) : (0 << 1), 1 << 1); + + /* Misc Settings */ + max8997->ramp_delay = 10; /* set 10mV/us, which is the default */ + max8997_write_reg(i2c, MAX8997_REG_BUCKRAMP, (0xf << 4) | 0x9); + + for (i = 0; i < pdata->num_regulators; i++) { + const struct voltage_map_desc *desc; + int id = pdata->regulators[i].id; + + desc = reg_voltage_map[id]; + if (desc) { + regulators[id].n_voltages = + (desc->max - desc->min) / desc->step + 1; + } else if (id == MAX8997_ESAFEOUT1 || id == MAX8997_ESAFEOUT2) { + regulators[id].volt_table = safeoutvolt; + regulators[id].n_voltages = ARRAY_SIZE(safeoutvolt); + } else if (id == MAX8997_CHARGER_CV) { + regulators[id].n_voltages = 16; + } + + config.dev = max8997->dev; + config.init_data = pdata->regulators[i].initdata; + config.driver_data = max8997; + config.of_node = pdata->regulators[i].reg_node; + + rdev = devm_regulator_register(&pdev->dev, ®ulators[id], + &config); + if (IS_ERR(rdev)) { + dev_err(max8997->dev, "regulator init failed for %d\n", + id); + return PTR_ERR(rdev); + } + } + + return 0; +} + +static const struct platform_device_id max8997_pmic_id[] = { + { "max8997-pmic", 0}, + { }, +}; +MODULE_DEVICE_TABLE(platform, max8997_pmic_id); + +static struct platform_driver max8997_pmic_driver = { + .driver = { + .name = "max8997-pmic", + }, + .probe = max8997_pmic_probe, + .id_table = max8997_pmic_id, +}; + +static int __init max8997_pmic_init(void) +{ + return platform_driver_register(&max8997_pmic_driver); +} +subsys_initcall(max8997_pmic_init); + +static void __exit max8997_pmic_cleanup(void) +{ + platform_driver_unregister(&max8997_pmic_driver); +} +module_exit(max8997_pmic_cleanup); + +MODULE_DESCRIPTION("MAXIM 8997/8966 Regulator Driver"); +MODULE_AUTHOR("MyungJoo Ham "); +MODULE_LICENSE("GPL"); diff --git a/drivers/regulator/max8997.c b/drivers/regulator/max8997.c deleted file mode 100644 index ea0196d..0000000 --- a/drivers/regulator/max8997.c +++ /dev/null @@ -1,1241 +0,0 @@ -/* - * max8997.c - Regulator driver for the Maxim 8997/8966 - * - * Copyright (C) 2011 Samsung Electronics - * MyungJoo Ham - * - * 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 max8998.c - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -struct max8997_data { - struct device *dev; - struct max8997_dev *iodev; - int num_regulators; - int ramp_delay; /* in mV/us */ - - bool buck1_gpiodvs; - bool buck2_gpiodvs; - bool buck5_gpiodvs; - u8 buck1_vol[8]; - u8 buck2_vol[8]; - u8 buck5_vol[8]; - int buck125_gpios[3]; - int buck125_gpioindex; - bool ignore_gpiodvs_side_effect; - - u8 saved_states[MAX8997_REG_MAX]; -}; - -static const unsigned int safeoutvolt[] = { - 4850000, - 4900000, - 4950000, - 3300000, -}; - -static inline void max8997_set_gpio(struct max8997_data *max8997) -{ - int set3 = (max8997->buck125_gpioindex) & 0x1; - int set2 = ((max8997->buck125_gpioindex) >> 1) & 0x1; - int set1 = ((max8997->buck125_gpioindex) >> 2) & 0x1; - - gpio_set_value(max8997->buck125_gpios[0], set1); - gpio_set_value(max8997->buck125_gpios[1], set2); - gpio_set_value(max8997->buck125_gpios[2], set3); -} - -struct voltage_map_desc { - int min; - int max; - int step; -}; - -/* Voltage maps in uV */ -static const struct voltage_map_desc ldo_voltage_map_desc = { - .min = 800000, .max = 3950000, .step = 50000, -}; /* LDO1 ~ 18, 21 all */ - -static const struct voltage_map_desc buck1245_voltage_map_desc = { - .min = 650000, .max = 2225000, .step = 25000, -}; /* Buck1, 2, 4, 5 */ - -static const struct voltage_map_desc buck37_voltage_map_desc = { - .min = 750000, .max = 3900000, .step = 50000, -}; /* Buck3, 7 */ - -/* current map in uA */ -static const struct voltage_map_desc charger_current_map_desc = { - .min = 200000, .max = 950000, .step = 50000, -}; - -static const struct voltage_map_desc topoff_current_map_desc = { - .min = 50000, .max = 200000, .step = 10000, -}; - -static const struct voltage_map_desc *reg_voltage_map[] = { - [MAX8997_LDO1] = &ldo_voltage_map_desc, - [MAX8997_LDO2] = &ldo_voltage_map_desc, - [MAX8997_LDO3] = &ldo_voltage_map_desc, - [MAX8997_LDO4] = &ldo_voltage_map_desc, - [MAX8997_LDO5] = &ldo_voltage_map_desc, - [MAX8997_LDO6] = &ldo_voltage_map_desc, - [MAX8997_LDO7] = &ldo_voltage_map_desc, - [MAX8997_LDO8] = &ldo_voltage_map_desc, - [MAX8997_LDO9] = &ldo_voltage_map_desc, - [MAX8997_LDO10] = &ldo_voltage_map_desc, - [MAX8997_LDO11] = &ldo_voltage_map_desc, - [MAX8997_LDO12] = &ldo_voltage_map_desc, - [MAX8997_LDO13] = &ldo_voltage_map_desc, - [MAX8997_LDO14] = &ldo_voltage_map_desc, - [MAX8997_LDO15] = &ldo_voltage_map_desc, - [MAX8997_LDO16] = &ldo_voltage_map_desc, - [MAX8997_LDO17] = &ldo_voltage_map_desc, - [MAX8997_LDO18] = &ldo_voltage_map_desc, - [MAX8997_LDO21] = &ldo_voltage_map_desc, - [MAX8997_BUCK1] = &buck1245_voltage_map_desc, - [MAX8997_BUCK2] = &buck1245_voltage_map_desc, - [MAX8997_BUCK3] = &buck37_voltage_map_desc, - [MAX8997_BUCK4] = &buck1245_voltage_map_desc, - [MAX8997_BUCK5] = &buck1245_voltage_map_desc, - [MAX8997_BUCK6] = NULL, - [MAX8997_BUCK7] = &buck37_voltage_map_desc, - [MAX8997_EN32KHZ_AP] = NULL, - [MAX8997_EN32KHZ_CP] = NULL, - [MAX8997_ENVICHG] = NULL, - [MAX8997_ESAFEOUT1] = NULL, - [MAX8997_ESAFEOUT2] = NULL, - [MAX8997_CHARGER_CV] = NULL, - [MAX8997_CHARGER] = &charger_current_map_desc, - [MAX8997_CHARGER_TOPOFF] = &topoff_current_map_desc, -}; - -static int max8997_list_voltage_charger_cv(struct regulator_dev *rdev, - unsigned int selector) -{ - int rid = rdev_get_id(rdev); - - if (rid != MAX8997_CHARGER_CV) - goto err; - - switch (selector) { - case 0x00: - return 4200000; - case 0x01 ... 0x0E: - return 4000000 + 20000 * (selector - 0x01); - case 0x0F: - return 4350000; - default: - return -EINVAL; - } -err: - return -EINVAL; -} - -static int max8997_list_voltage(struct regulator_dev *rdev, - unsigned int selector) -{ - const struct voltage_map_desc *desc; - int rid = rdev_get_id(rdev); - int val; - - if (rid >= ARRAY_SIZE(reg_voltage_map) || - rid < 0) - return -EINVAL; - - desc = reg_voltage_map[rid]; - if (desc == NULL) - return -EINVAL; - - val = desc->min + desc->step * selector; - if (val > desc->max) - return -EINVAL; - - return val; -} - -static int max8997_get_enable_register(struct regulator_dev *rdev, - int *reg, int *mask, int *pattern) -{ - int rid = rdev_get_id(rdev); - - switch (rid) { - case MAX8997_LDO1 ... MAX8997_LDO21: - *reg = MAX8997_REG_LDO1CTRL + (rid - MAX8997_LDO1); - *mask = 0xC0; - *pattern = 0xC0; - break; - case MAX8997_BUCK1: - *reg = MAX8997_REG_BUCK1CTRL; - *mask = 0x01; - *pattern = 0x01; - break; - case MAX8997_BUCK2: - *reg = MAX8997_REG_BUCK2CTRL; - *mask = 0x01; - *pattern = 0x01; - break; - case MAX8997_BUCK3: - *reg = MAX8997_REG_BUCK3CTRL; - *mask = 0x01; - *pattern = 0x01; - break; - case MAX8997_BUCK4: - *reg = MAX8997_REG_BUCK4CTRL; - *mask = 0x01; - *pattern = 0x01; - break; - case MAX8997_BUCK5: - *reg = MAX8997_REG_BUCK5CTRL; - *mask = 0x01; - *pattern = 0x01; - break; - case MAX8997_BUCK6: - *reg = MAX8997_REG_BUCK6CTRL; - *mask = 0x01; - *pattern = 0x01; - break; - case MAX8997_BUCK7: - *reg = MAX8997_REG_BUCK7CTRL; - *mask = 0x01; - *pattern = 0x01; - break; - case MAX8997_EN32KHZ_AP ... MAX8997_EN32KHZ_CP: - *reg = MAX8997_REG_MAINCON1; - *mask = 0x01 << (rid - MAX8997_EN32KHZ_AP); - *pattern = 0x01 << (rid - MAX8997_EN32KHZ_AP); - break; - case MAX8997_ENVICHG: - *reg = MAX8997_REG_MBCCTRL1; - *mask = 0x80; - *pattern = 0x80; - break; - case MAX8997_ESAFEOUT1 ... MAX8997_ESAFEOUT2: - *reg = MAX8997_REG_SAFEOUTCTRL; - *mask = 0x40 << (rid - MAX8997_ESAFEOUT1); - *pattern = 0x40 << (rid - MAX8997_ESAFEOUT1); - break; - case MAX8997_CHARGER: - *reg = MAX8997_REG_MBCCTRL2; - *mask = 0x40; - *pattern = 0x40; - break; - default: - /* Not controllable or not exists */ - return -EINVAL; - } - - return 0; -} - -static int max8997_reg_is_enabled(struct regulator_dev *rdev) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - struct i2c_client *i2c = max8997->iodev->i2c; - int ret, reg, mask, pattern; - u8 val; - - ret = max8997_get_enable_register(rdev, ®, &mask, &pattern); - if (ret) - return ret; - - ret = max8997_read_reg(i2c, reg, &val); - if (ret) - return ret; - - return (val & mask) == pattern; -} - -static int max8997_reg_enable(struct regulator_dev *rdev) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - struct i2c_client *i2c = max8997->iodev->i2c; - int ret, reg, mask, pattern; - - ret = max8997_get_enable_register(rdev, ®, &mask, &pattern); - if (ret) - return ret; - - return max8997_update_reg(i2c, reg, pattern, mask); -} - -static int max8997_reg_disable(struct regulator_dev *rdev) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - struct i2c_client *i2c = max8997->iodev->i2c; - int ret, reg, mask, pattern; - - ret = max8997_get_enable_register(rdev, ®, &mask, &pattern); - if (ret) - return ret; - - return max8997_update_reg(i2c, reg, ~pattern, mask); -} - -static int max8997_get_voltage_register(struct regulator_dev *rdev, - int *_reg, int *_shift, int *_mask) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - int rid = rdev_get_id(rdev); - int reg, shift = 0, mask = 0x3f; - - switch (rid) { - case MAX8997_LDO1 ... MAX8997_LDO21: - reg = MAX8997_REG_LDO1CTRL + (rid - MAX8997_LDO1); - break; - case MAX8997_BUCK1: - reg = MAX8997_REG_BUCK1DVS1; - if (max8997->buck1_gpiodvs) - reg += max8997->buck125_gpioindex; - break; - case MAX8997_BUCK2: - reg = MAX8997_REG_BUCK2DVS1; - if (max8997->buck2_gpiodvs) - reg += max8997->buck125_gpioindex; - break; - case MAX8997_BUCK3: - reg = MAX8997_REG_BUCK3DVS; - break; - case MAX8997_BUCK4: - reg = MAX8997_REG_BUCK4DVS; - break; - case MAX8997_BUCK5: - reg = MAX8997_REG_BUCK5DVS1; - if (max8997->buck5_gpiodvs) - reg += max8997->buck125_gpioindex; - break; - case MAX8997_BUCK7: - reg = MAX8997_REG_BUCK7DVS; - break; - case MAX8997_ESAFEOUT1 ... MAX8997_ESAFEOUT2: - reg = MAX8997_REG_SAFEOUTCTRL; - shift = (rid == MAX8997_ESAFEOUT2) ? 2 : 0; - mask = 0x3; - break; - case MAX8997_CHARGER_CV: - reg = MAX8997_REG_MBCCTRL3; - shift = 0; - mask = 0xf; - break; - case MAX8997_CHARGER: - reg = MAX8997_REG_MBCCTRL4; - shift = 0; - mask = 0xf; - break; - case MAX8997_CHARGER_TOPOFF: - reg = MAX8997_REG_MBCCTRL5; - shift = 0; - mask = 0xf; - break; - default: - return -EINVAL; - } - - *_reg = reg; - *_shift = shift; - *_mask = mask; - - return 0; -} - -static int max8997_get_voltage_sel(struct regulator_dev *rdev) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - struct i2c_client *i2c = max8997->iodev->i2c; - int reg, shift, mask, ret; - u8 val; - - ret = max8997_get_voltage_register(rdev, ®, &shift, &mask); - if (ret) - return ret; - - ret = max8997_read_reg(i2c, reg, &val); - if (ret) - return ret; - - val >>= shift; - val &= mask; - - return val; -} - -static inline int max8997_get_voltage_proper_val( - const struct voltage_map_desc *desc, - int min_vol, int max_vol) -{ - int i; - - if (desc == NULL) - return -EINVAL; - - if (max_vol < desc->min || min_vol > desc->max) - return -EINVAL; - - if (min_vol < desc->min) - min_vol = desc->min; - - i = DIV_ROUND_UP(min_vol - desc->min, desc->step); - - if (desc->min + desc->step * i > max_vol) - return -EINVAL; - - return i; -} - -static int max8997_set_voltage_charger_cv(struct regulator_dev *rdev, - int min_uV, int max_uV, unsigned *selector) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - struct i2c_client *i2c = max8997->iodev->i2c; - int rid = rdev_get_id(rdev); - int lb, ub; - int reg, shift = 0, mask, ret = 0; - u8 val = 0x0; - - if (rid != MAX8997_CHARGER_CV) - return -EINVAL; - - ret = max8997_get_voltage_register(rdev, ®, &shift, &mask); - if (ret) - return ret; - - if (max_uV < 4000000 || min_uV > 4350000) - return -EINVAL; - - if (min_uV <= 4000000) { - if (max_uV >= 4000000) - return -EINVAL; - else - val = 0x1; - } else if (min_uV <= 4200000 && max_uV >= 4200000) - val = 0x0; - else { - lb = (min_uV - 4000001) / 20000 + 2; - ub = (max_uV - 4000000) / 20000 + 1; - - if (lb > ub) - return -EINVAL; - - if (lb < 0xf) - val = lb; - else { - if (ub >= 0xf) - val = 0xf; - else - return -EINVAL; - } - } - - *selector = val; - - ret = max8997_update_reg(i2c, reg, val << shift, mask); - - return ret; -} - -/* - * For LDO1 ~ LDO21, BUCK1~5, BUCK7, CHARGER, CHARGER_TOPOFF - * BUCK1, 2, and 5 are available if they are not controlled by gpio - */ -static int max8997_set_voltage_ldobuck(struct regulator_dev *rdev, - int min_uV, int max_uV, unsigned *selector) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - struct i2c_client *i2c = max8997->iodev->i2c; - const struct voltage_map_desc *desc; - int rid = rdev_get_id(rdev); - int i, reg, shift, mask, ret; - - switch (rid) { - case MAX8997_LDO1 ... MAX8997_LDO21: - break; - case MAX8997_BUCK1 ... MAX8997_BUCK5: - break; - case MAX8997_BUCK6: - return -EINVAL; - case MAX8997_BUCK7: - break; - case MAX8997_CHARGER: - break; - case MAX8997_CHARGER_TOPOFF: - break; - default: - return -EINVAL; - } - - desc = reg_voltage_map[rid]; - - i = max8997_get_voltage_proper_val(desc, min_uV, max_uV); - if (i < 0) - return i; - - ret = max8997_get_voltage_register(rdev, ®, &shift, &mask); - if (ret) - return ret; - - ret = max8997_update_reg(i2c, reg, i << shift, mask << shift); - *selector = i; - - return ret; -} - -static int max8997_set_voltage_buck_time_sel(struct regulator_dev *rdev, - unsigned int old_selector, - unsigned int new_selector) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - int rid = rdev_get_id(rdev); - const struct voltage_map_desc *desc = reg_voltage_map[rid]; - - /* Delay is required only if the voltage is increasing */ - if (old_selector >= new_selector) - return 0; - - /* No need to delay if gpio_dvs_mode */ - switch (rid) { - case MAX8997_BUCK1: - if (max8997->buck1_gpiodvs) - return 0; - break; - case MAX8997_BUCK2: - if (max8997->buck2_gpiodvs) - return 0; - break; - case MAX8997_BUCK5: - if (max8997->buck5_gpiodvs) - return 0; - break; - } - - switch (rid) { - case MAX8997_BUCK1: - case MAX8997_BUCK2: - case MAX8997_BUCK4: - case MAX8997_BUCK5: - return DIV_ROUND_UP(desc->step * (new_selector - old_selector), - max8997->ramp_delay * 1000); - } - - return 0; -} - -/* - * Assess the damage on the voltage setting of BUCK1,2,5 by the change. - * - * When GPIO-DVS mode is used for multiple bucks, changing the voltage value - * of one of the bucks may affect that of another buck, which is the side - * effect of the change (set_voltage). This function examines the GPIO-DVS - * configurations and checks whether such side-effect exists. - */ -static int max8997_assess_side_effect(struct regulator_dev *rdev, - u8 new_val, int *best) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - int rid = rdev_get_id(rdev); - u8 *buckx_val[3]; - bool buckx_gpiodvs[3]; - int side_effect[8]; - int min_side_effect = INT_MAX; - int i; - - *best = -1; - - switch (rid) { - case MAX8997_BUCK1: - rid = 0; - break; - case MAX8997_BUCK2: - rid = 1; - break; - case MAX8997_BUCK5: - rid = 2; - break; - default: - return -EINVAL; - } - - buckx_val[0] = max8997->buck1_vol; - buckx_val[1] = max8997->buck2_vol; - buckx_val[2] = max8997->buck5_vol; - buckx_gpiodvs[0] = max8997->buck1_gpiodvs; - buckx_gpiodvs[1] = max8997->buck2_gpiodvs; - buckx_gpiodvs[2] = max8997->buck5_gpiodvs; - - for (i = 0; i < 8; i++) { - int others; - - if (new_val != (buckx_val[rid])[i]) { - side_effect[i] = -1; - continue; - } - - side_effect[i] = 0; - for (others = 0; others < 3; others++) { - int diff; - - if (others == rid) - continue; - if (buckx_gpiodvs[others] == false) - continue; /* Not affected */ - diff = (buckx_val[others])[i] - - (buckx_val[others])[max8997->buck125_gpioindex]; - if (diff > 0) - side_effect[i] += diff; - else if (diff < 0) - side_effect[i] -= diff; - } - if (side_effect[i] == 0) { - *best = i; - return 0; /* NO SIDE EFFECT! Use This! */ - } - if (side_effect[i] < min_side_effect) { - min_side_effect = side_effect[i]; - *best = i; - } - } - - if (*best == -1) - return -EINVAL; - - return side_effect[*best]; -} - -/* - * For Buck 1 ~ 5 and 7. If it is not controlled by GPIO, this calls - * max8997_set_voltage_ldobuck to do the job. - */ -static int max8997_set_voltage_buck(struct regulator_dev *rdev, - int min_uV, int max_uV, unsigned *selector) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - int rid = rdev_get_id(rdev); - const struct voltage_map_desc *desc; - int new_val, new_idx, damage, tmp_val, tmp_idx, tmp_dmg; - bool gpio_dvs_mode = false; - - if (rid < MAX8997_BUCK1 || rid > MAX8997_BUCK7) - return -EINVAL; - - switch (rid) { - case MAX8997_BUCK1: - if (max8997->buck1_gpiodvs) - gpio_dvs_mode = true; - break; - case MAX8997_BUCK2: - if (max8997->buck2_gpiodvs) - gpio_dvs_mode = true; - break; - case MAX8997_BUCK5: - if (max8997->buck5_gpiodvs) - gpio_dvs_mode = true; - break; - } - - if (!gpio_dvs_mode) - return max8997_set_voltage_ldobuck(rdev, min_uV, max_uV, - selector); - - desc = reg_voltage_map[rid]; - new_val = max8997_get_voltage_proper_val(desc, min_uV, max_uV); - if (new_val < 0) - return new_val; - - tmp_dmg = INT_MAX; - tmp_idx = -1; - tmp_val = -1; - do { - damage = max8997_assess_side_effect(rdev, new_val, &new_idx); - if (damage == 0) - goto out; - - if (tmp_dmg > damage) { - tmp_idx = new_idx; - tmp_val = new_val; - tmp_dmg = damage; - } - - new_val++; - } while (desc->min + desc->step * new_val <= desc->max); - - new_idx = tmp_idx; - new_val = tmp_val; - - if (max8997->ignore_gpiodvs_side_effect == false) - return -EINVAL; - - dev_warn(&rdev->dev, - "MAX8997 GPIO-DVS Side Effect Warning: GPIO SET: %d -> %d\n", - max8997->buck125_gpioindex, tmp_idx); - -out: - if (new_idx < 0 || new_val < 0) - return -EINVAL; - - max8997->buck125_gpioindex = new_idx; - max8997_set_gpio(max8997); - *selector = new_val; - - return 0; -} - -/* For SAFEOUT1 and SAFEOUT2 */ -static int max8997_set_voltage_safeout_sel(struct regulator_dev *rdev, - unsigned selector) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - struct i2c_client *i2c = max8997->iodev->i2c; - int rid = rdev_get_id(rdev); - int reg, shift = 0, mask, ret; - - if (rid != MAX8997_ESAFEOUT1 && rid != MAX8997_ESAFEOUT2) - return -EINVAL; - - ret = max8997_get_voltage_register(rdev, ®, &shift, &mask); - if (ret) - return ret; - - return max8997_update_reg(i2c, reg, selector << shift, mask << shift); -} - -static int max8997_reg_disable_suspend(struct regulator_dev *rdev) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - struct i2c_client *i2c = max8997->iodev->i2c; - int ret, reg, mask, pattern; - int rid = rdev_get_id(rdev); - - ret = max8997_get_enable_register(rdev, ®, &mask, &pattern); - if (ret) - return ret; - - max8997_read_reg(i2c, reg, &max8997->saved_states[rid]); - - if (rid == MAX8997_LDO1 || - rid == MAX8997_LDO10 || - rid == MAX8997_LDO21) { - dev_dbg(&rdev->dev, "Conditional Power-Off for %s\n", - rdev->desc->name); - return max8997_update_reg(i2c, reg, 0x40, mask); - } - - dev_dbg(&rdev->dev, "Full Power-Off for %s (%xh -> %xh)\n", - rdev->desc->name, max8997->saved_states[rid] & mask, - (~pattern) & mask); - return max8997_update_reg(i2c, reg, ~pattern, mask); -} - -static struct regulator_ops max8997_ldo_ops = { - .list_voltage = max8997_list_voltage, - .is_enabled = max8997_reg_is_enabled, - .enable = max8997_reg_enable, - .disable = max8997_reg_disable, - .get_voltage_sel = max8997_get_voltage_sel, - .set_voltage = max8997_set_voltage_ldobuck, - .set_suspend_disable = max8997_reg_disable_suspend, -}; - -static struct regulator_ops max8997_buck_ops = { - .list_voltage = max8997_list_voltage, - .is_enabled = max8997_reg_is_enabled, - .enable = max8997_reg_enable, - .disable = max8997_reg_disable, - .get_voltage_sel = max8997_get_voltage_sel, - .set_voltage = max8997_set_voltage_buck, - .set_voltage_time_sel = max8997_set_voltage_buck_time_sel, - .set_suspend_disable = max8997_reg_disable_suspend, -}; - -static struct regulator_ops max8997_fixedvolt_ops = { - .list_voltage = max8997_list_voltage, - .is_enabled = max8997_reg_is_enabled, - .enable = max8997_reg_enable, - .disable = max8997_reg_disable, - .set_suspend_disable = max8997_reg_disable_suspend, -}; - -static struct regulator_ops max8997_safeout_ops = { - .list_voltage = regulator_list_voltage_table, - .is_enabled = max8997_reg_is_enabled, - .enable = max8997_reg_enable, - .disable = max8997_reg_disable, - .get_voltage_sel = max8997_get_voltage_sel, - .set_voltage_sel = max8997_set_voltage_safeout_sel, - .set_suspend_disable = max8997_reg_disable_suspend, -}; - -static struct regulator_ops max8997_fixedstate_ops = { - .list_voltage = max8997_list_voltage_charger_cv, - .get_voltage_sel = max8997_get_voltage_sel, - .set_voltage = max8997_set_voltage_charger_cv, -}; - -static int max8997_set_current_limit(struct regulator_dev *rdev, - int min_uA, int max_uA) -{ - unsigned dummy; - int rid = rdev_get_id(rdev); - - if (rid != MAX8997_CHARGER && rid != MAX8997_CHARGER_TOPOFF) - return -EINVAL; - - /* Reuse max8997_set_voltage_ldobuck to set current_limit. */ - return max8997_set_voltage_ldobuck(rdev, min_uA, max_uA, &dummy); -} - -static int max8997_get_current_limit(struct regulator_dev *rdev) -{ - int sel, rid = rdev_get_id(rdev); - - if (rid != MAX8997_CHARGER && rid != MAX8997_CHARGER_TOPOFF) - return -EINVAL; - - sel = max8997_get_voltage_sel(rdev); - if (sel < 0) - return sel; - - /* Reuse max8997_list_voltage to get current_limit. */ - return max8997_list_voltage(rdev, sel); -} - -static struct regulator_ops max8997_charger_ops = { - .is_enabled = max8997_reg_is_enabled, - .enable = max8997_reg_enable, - .disable = max8997_reg_disable, - .get_current_limit = max8997_get_current_limit, - .set_current_limit = max8997_set_current_limit, -}; - -static struct regulator_ops max8997_charger_fixedstate_ops = { - .get_current_limit = max8997_get_current_limit, - .set_current_limit = max8997_set_current_limit, -}; - -#define MAX8997_VOLTAGE_REGULATOR(_name, _ops) {\ - .name = #_name, \ - .id = MAX8997_##_name, \ - .ops = &_ops, \ - .type = REGULATOR_VOLTAGE, \ - .owner = THIS_MODULE, \ -} - -#define MAX8997_CURRENT_REGULATOR(_name, _ops) {\ - .name = #_name, \ - .id = MAX8997_##_name, \ - .ops = &_ops, \ - .type = REGULATOR_CURRENT, \ - .owner = THIS_MODULE, \ -} - -static struct regulator_desc regulators[] = { - MAX8997_VOLTAGE_REGULATOR(LDO1, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO2, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO3, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO4, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO5, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO6, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO7, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO8, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO9, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO10, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO11, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO12, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO13, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO14, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO15, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO16, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO17, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO18, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO21, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(BUCK1, max8997_buck_ops), - MAX8997_VOLTAGE_REGULATOR(BUCK2, max8997_buck_ops), - MAX8997_VOLTAGE_REGULATOR(BUCK3, max8997_buck_ops), - MAX8997_VOLTAGE_REGULATOR(BUCK4, max8997_buck_ops), - MAX8997_VOLTAGE_REGULATOR(BUCK5, max8997_buck_ops), - MAX8997_VOLTAGE_REGULATOR(BUCK6, max8997_fixedvolt_ops), - MAX8997_VOLTAGE_REGULATOR(BUCK7, max8997_buck_ops), - MAX8997_VOLTAGE_REGULATOR(EN32KHZ_AP, max8997_fixedvolt_ops), - MAX8997_VOLTAGE_REGULATOR(EN32KHZ_CP, max8997_fixedvolt_ops), - MAX8997_VOLTAGE_REGULATOR(ENVICHG, max8997_fixedvolt_ops), - MAX8997_VOLTAGE_REGULATOR(ESAFEOUT1, max8997_safeout_ops), - MAX8997_VOLTAGE_REGULATOR(ESAFEOUT2, max8997_safeout_ops), - MAX8997_VOLTAGE_REGULATOR(CHARGER_CV, max8997_fixedstate_ops), - MAX8997_CURRENT_REGULATOR(CHARGER, max8997_charger_ops), - MAX8997_CURRENT_REGULATOR(CHARGER_TOPOFF, - max8997_charger_fixedstate_ops), -}; - -#ifdef CONFIG_OF -static int max8997_pmic_dt_parse_dvs_gpio(struct platform_device *pdev, - struct max8997_platform_data *pdata, - struct device_node *pmic_np) -{ - int i, gpio; - - for (i = 0; i < 3; i++) { - gpio = of_get_named_gpio(pmic_np, - "max8997,pmic-buck125-dvs-gpios", i); - if (!gpio_is_valid(gpio)) { - dev_err(&pdev->dev, "invalid gpio[%d]: %d\n", i, gpio); - return -EINVAL; - } - pdata->buck125_gpios[i] = gpio; - } - return 0; -} - -static int max8997_pmic_dt_parse_pdata(struct platform_device *pdev, - struct max8997_platform_data *pdata) -{ - struct max8997_dev *iodev = dev_get_drvdata(pdev->dev.parent); - struct device_node *pmic_np, *regulators_np, *reg_np; - struct max8997_regulator_data *rdata; - unsigned int i, dvs_voltage_nr = 1, ret; - - pmic_np = iodev->dev->of_node; - if (!pmic_np) { - dev_err(&pdev->dev, "could not find pmic sub-node\n"); - return -ENODEV; - } - - regulators_np = of_get_child_by_name(pmic_np, "regulators"); - if (!regulators_np) { - dev_err(&pdev->dev, "could not find regulators sub-node\n"); - return -EINVAL; - } - - /* count the number of regulators to be supported in pmic */ - pdata->num_regulators = of_get_child_count(regulators_np); - - rdata = devm_kzalloc(&pdev->dev, sizeof(*rdata) * - pdata->num_regulators, GFP_KERNEL); - if (!rdata) { - of_node_put(regulators_np); - return -ENOMEM; - } - - pdata->regulators = rdata; - for_each_child_of_node(regulators_np, reg_np) { - for (i = 0; i < ARRAY_SIZE(regulators); i++) - if (!of_node_cmp(reg_np->name, regulators[i].name)) - break; - - if (i == ARRAY_SIZE(regulators)) { - dev_warn(&pdev->dev, "don't know how to configure regulator %s\n", - reg_np->name); - continue; - } - - rdata->id = i; - rdata->initdata = of_get_regulator_init_data(&pdev->dev, - reg_np, - ®ulators[i]); - rdata->reg_node = reg_np; - rdata++; - } - of_node_put(regulators_np); - - if (of_get_property(pmic_np, "max8997,pmic-buck1-uses-gpio-dvs", NULL)) - pdata->buck1_gpiodvs = true; - - if (of_get_property(pmic_np, "max8997,pmic-buck2-uses-gpio-dvs", NULL)) - pdata->buck2_gpiodvs = true; - - if (of_get_property(pmic_np, "max8997,pmic-buck5-uses-gpio-dvs", NULL)) - pdata->buck5_gpiodvs = true; - - if (pdata->buck1_gpiodvs || pdata->buck2_gpiodvs || - pdata->buck5_gpiodvs) { - ret = max8997_pmic_dt_parse_dvs_gpio(pdev, pdata, pmic_np); - if (ret) - return -EINVAL; - - if (of_property_read_u32(pmic_np, - "max8997,pmic-buck125-default-dvs-idx", - &pdata->buck125_default_idx)) { - pdata->buck125_default_idx = 0; - } else { - if (pdata->buck125_default_idx >= 8) { - pdata->buck125_default_idx = 0; - dev_info(&pdev->dev, "invalid value for default dvs index, using 0 instead\n"); - } - } - - if (of_get_property(pmic_np, - "max8997,pmic-ignore-gpiodvs-side-effect", NULL)) - pdata->ignore_gpiodvs_side_effect = true; - - dvs_voltage_nr = 8; - } - - if (of_property_read_u32_array(pmic_np, - "max8997,pmic-buck1-dvs-voltage", - pdata->buck1_voltage, dvs_voltage_nr)) { - dev_err(&pdev->dev, "buck1 voltages not specified\n"); - return -EINVAL; - } - - if (of_property_read_u32_array(pmic_np, - "max8997,pmic-buck2-dvs-voltage", - pdata->buck2_voltage, dvs_voltage_nr)) { - dev_err(&pdev->dev, "buck2 voltages not specified\n"); - return -EINVAL; - } - - if (of_property_read_u32_array(pmic_np, - "max8997,pmic-buck5-dvs-voltage", - pdata->buck5_voltage, dvs_voltage_nr)) { - dev_err(&pdev->dev, "buck5 voltages not specified\n"); - return -EINVAL; - } - - return 0; -} -#else -static int max8997_pmic_dt_parse_pdata(struct platform_device *pdev, - struct max8997_platform_data *pdata) -{ - return 0; -} -#endif /* CONFIG_OF */ - -static int max8997_pmic_probe(struct platform_device *pdev) -{ - struct max8997_dev *iodev = dev_get_drvdata(pdev->dev.parent); - struct max8997_platform_data *pdata = iodev->pdata; - struct regulator_config config = { }; - struct regulator_dev *rdev; - struct max8997_data *max8997; - struct i2c_client *i2c; - int i, ret, nr_dvs; - u8 max_buck1 = 0, max_buck2 = 0, max_buck5 = 0; - - if (!pdata) { - dev_err(&pdev->dev, "No platform init data supplied.\n"); - return -ENODEV; - } - - if (iodev->dev->of_node) { - ret = max8997_pmic_dt_parse_pdata(pdev, pdata); - if (ret) - return ret; - } - - max8997 = devm_kzalloc(&pdev->dev, sizeof(struct max8997_data), - GFP_KERNEL); - if (!max8997) - return -ENOMEM; - - max8997->dev = &pdev->dev; - max8997->iodev = iodev; - max8997->num_regulators = pdata->num_regulators; - platform_set_drvdata(pdev, max8997); - i2c = max8997->iodev->i2c; - - max8997->buck125_gpioindex = pdata->buck125_default_idx; - max8997->buck1_gpiodvs = pdata->buck1_gpiodvs; - max8997->buck2_gpiodvs = pdata->buck2_gpiodvs; - max8997->buck5_gpiodvs = pdata->buck5_gpiodvs; - memcpy(max8997->buck125_gpios, pdata->buck125_gpios, sizeof(int) * 3); - max8997->ignore_gpiodvs_side_effect = pdata->ignore_gpiodvs_side_effect; - - nr_dvs = (pdata->buck1_gpiodvs || pdata->buck2_gpiodvs || - pdata->buck5_gpiodvs) ? 8 : 1; - - for (i = 0; i < nr_dvs; i++) { - max8997->buck1_vol[i] = ret = - max8997_get_voltage_proper_val( - &buck1245_voltage_map_desc, - pdata->buck1_voltage[i], - pdata->buck1_voltage[i] + - buck1245_voltage_map_desc.step); - if (ret < 0) - return ret; - - max8997->buck2_vol[i] = ret = - max8997_get_voltage_proper_val( - &buck1245_voltage_map_desc, - pdata->buck2_voltage[i], - pdata->buck2_voltage[i] + - buck1245_voltage_map_desc.step); - if (ret < 0) - return ret; - - max8997->buck5_vol[i] = ret = - max8997_get_voltage_proper_val( - &buck1245_voltage_map_desc, - pdata->buck5_voltage[i], - pdata->buck5_voltage[i] + - buck1245_voltage_map_desc.step); - if (ret < 0) - return ret; - - if (max_buck1 < max8997->buck1_vol[i]) - max_buck1 = max8997->buck1_vol[i]; - if (max_buck2 < max8997->buck2_vol[i]) - max_buck2 = max8997->buck2_vol[i]; - if (max_buck5 < max8997->buck5_vol[i]) - max_buck5 = max8997->buck5_vol[i]; - } - - /* For the safety, set max voltage before setting up */ - for (i = 0; i < 8; i++) { - max8997_update_reg(i2c, MAX8997_REG_BUCK1DVS1 + i, - max_buck1, 0x3f); - max8997_update_reg(i2c, MAX8997_REG_BUCK2DVS1 + i, - max_buck2, 0x3f); - max8997_update_reg(i2c, MAX8997_REG_BUCK5DVS1 + i, - max_buck5, 0x3f); - } - - /* Initialize all the DVS related BUCK registers */ - for (i = 0; i < nr_dvs; i++) { - max8997_update_reg(i2c, MAX8997_REG_BUCK1DVS1 + i, - max8997->buck1_vol[i], - 0x3f); - max8997_update_reg(i2c, MAX8997_REG_BUCK2DVS1 + i, - max8997->buck2_vol[i], - 0x3f); - max8997_update_reg(i2c, MAX8997_REG_BUCK5DVS1 + i, - max8997->buck5_vol[i], - 0x3f); - } - - /* - * If buck 1, 2, and 5 do not care DVS GPIO settings, ignore them. - * If at least one of them cares, set gpios. - */ - if (pdata->buck1_gpiodvs || pdata->buck2_gpiodvs || - pdata->buck5_gpiodvs) { - - if (!gpio_is_valid(pdata->buck125_gpios[0]) || - !gpio_is_valid(pdata->buck125_gpios[1]) || - !gpio_is_valid(pdata->buck125_gpios[2])) { - dev_err(&pdev->dev, "GPIO NOT VALID\n"); - return -EINVAL; - } - - ret = devm_gpio_request(&pdev->dev, pdata->buck125_gpios[0], - "MAX8997 SET1"); - if (ret) - return ret; - - ret = devm_gpio_request(&pdev->dev, pdata->buck125_gpios[1], - "MAX8997 SET2"); - if (ret) - return ret; - - ret = devm_gpio_request(&pdev->dev, pdata->buck125_gpios[2], - "MAX8997 SET3"); - if (ret) - return ret; - - gpio_direction_output(pdata->buck125_gpios[0], - (max8997->buck125_gpioindex >> 2) - & 0x1); /* SET1 */ - gpio_direction_output(pdata->buck125_gpios[1], - (max8997->buck125_gpioindex >> 1) - & 0x1); /* SET2 */ - gpio_direction_output(pdata->buck125_gpios[2], - (max8997->buck125_gpioindex >> 0) - & 0x1); /* SET3 */ - } - - /* DVS-GPIO disabled */ - max8997_update_reg(i2c, MAX8997_REG_BUCK1CTRL, (pdata->buck1_gpiodvs) ? - (1 << 1) : (0 << 1), 1 << 1); - max8997_update_reg(i2c, MAX8997_REG_BUCK2CTRL, (pdata->buck2_gpiodvs) ? - (1 << 1) : (0 << 1), 1 << 1); - max8997_update_reg(i2c, MAX8997_REG_BUCK5CTRL, (pdata->buck5_gpiodvs) ? - (1 << 1) : (0 << 1), 1 << 1); - - /* Misc Settings */ - max8997->ramp_delay = 10; /* set 10mV/us, which is the default */ - max8997_write_reg(i2c, MAX8997_REG_BUCKRAMP, (0xf << 4) | 0x9); - - for (i = 0; i < pdata->num_regulators; i++) { - const struct voltage_map_desc *desc; - int id = pdata->regulators[i].id; - - desc = reg_voltage_map[id]; - if (desc) { - regulators[id].n_voltages = - (desc->max - desc->min) / desc->step + 1; - } else if (id == MAX8997_ESAFEOUT1 || id == MAX8997_ESAFEOUT2) { - regulators[id].volt_table = safeoutvolt; - regulators[id].n_voltages = ARRAY_SIZE(safeoutvolt); - } else if (id == MAX8997_CHARGER_CV) { - regulators[id].n_voltages = 16; - } - - config.dev = max8997->dev; - config.init_data = pdata->regulators[i].initdata; - config.driver_data = max8997; - config.of_node = pdata->regulators[i].reg_node; - - rdev = devm_regulator_register(&pdev->dev, ®ulators[id], - &config); - if (IS_ERR(rdev)) { - dev_err(max8997->dev, "regulator init failed for %d\n", - id); - return PTR_ERR(rdev); - } - } - - return 0; -} - -static const struct platform_device_id max8997_pmic_id[] = { - { "max8997-pmic", 0}, - { }, -}; -MODULE_DEVICE_TABLE(platform, max8997_pmic_id); - -static struct platform_driver max8997_pmic_driver = { - .driver = { - .name = "max8997-pmic", - }, - .probe = max8997_pmic_probe, - .id_table = max8997_pmic_id, -}; - -static int __init max8997_pmic_init(void) -{ - return platform_driver_register(&max8997_pmic_driver); -} -subsys_initcall(max8997_pmic_init); - -static void __exit max8997_pmic_cleanup(void) -{ - platform_driver_unregister(&max8997_pmic_driver); -} -module_exit(max8997_pmic_cleanup); - -MODULE_DESCRIPTION("MAXIM 8997/8966 Regulator Driver"); -MODULE_AUTHOR("MyungJoo Ham "); -MODULE_LICENSE("GPL"); -- cgit v0.10.2