M: Krzysztof Kozlowski <k.kozlowski@samsung.com>
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
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
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
--- /dev/null
+/*
+ * max14577.c - Regulator driver for the Maxim 14577/77836
+ *
+ * Copyright (C) 2013,2014 Samsung Electronics
+ * Krzysztof Kozlowski <k.kozlowski@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/mfd/max14577.h>
+#include <linux/mfd/max14577-private.h>
+#include <linux/regulator/of_regulator.h>
+
+static int max14577_reg_is_enabled(struct regulator_dev *rdev)
+{
+ int rid = rdev_get_id(rdev);
+ struct regmap *rmap = rdev->regmap;
+ u8 reg_data;
+
+ switch (rid) {
+ case MAX14577_CHARGER:
+ max14577_read_reg(rmap, MAX14577_CHG_REG_CHG_CTRL2, ®_data);
+ if ((reg_data & CHGCTRL2_MBCHOSTEN_MASK) == 0)
+ return 0;
+ max14577_read_reg(rmap, MAX14577_CHG_REG_STATUS3, ®_data);
+ if ((reg_data & STATUS3_CGMBC_MASK) == 0)
+ return 0;
+ /* MBCHOSTEN and CGMBC are on */
+ return 1;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int max14577_reg_get_current_limit(struct regulator_dev *rdev)
+{
+ u8 reg_data;
+ struct regmap *rmap = rdev->regmap;
+ struct max14577 *max14577 = rdev_get_drvdata(rdev);
+ const struct maxim_charger_current *limits =
+ &maxim_charger_currents[max14577->dev_type];
+
+ if (rdev_get_id(rdev) != MAX14577_CHARGER)
+ return -EINVAL;
+
+ max14577_read_reg(rmap, MAX14577_CHG_REG_CHG_CTRL4, ®_data);
+
+ if ((reg_data & CHGCTRL4_MBCICHWRCL_MASK) == 0)
+ return limits->min;
+
+ reg_data = ((reg_data & CHGCTRL4_MBCICHWRCH_MASK) >>
+ CHGCTRL4_MBCICHWRCH_SHIFT);
+ return limits->high_start + reg_data * limits->high_step;
+}
+
+static int max14577_reg_set_current_limit(struct regulator_dev *rdev,
+ int min_uA, int max_uA)
+{
+ u8 reg_data;
+ int ret;
+ struct max14577 *max14577 = rdev_get_drvdata(rdev);
+ const struct maxim_charger_current *limits =
+ &maxim_charger_currents[max14577->dev_type];
+
+ if (rdev_get_id(rdev) != MAX14577_CHARGER)
+ return -EINVAL;
+
+ ret = maxim_charger_calc_reg_current(limits, min_uA, max_uA, ®_data);
+ if (ret)
+ return ret;
+
+ return max14577_update_reg(rdev->regmap, MAX14577_CHG_REG_CHG_CTRL4,
+ CHGCTRL4_MBCICHWRCL_MASK | CHGCTRL4_MBCICHWRCH_MASK,
+ reg_data);
+}
+
+static struct regulator_ops max14577_safeout_ops = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .list_voltage = regulator_list_voltage_linear,
+};
+
+static struct regulator_ops max14577_charger_ops = {
+ .is_enabled = max14577_reg_is_enabled,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .get_current_limit = max14577_reg_get_current_limit,
+ .set_current_limit = max14577_reg_set_current_limit,
+};
+
+#define MAX14577_SAFEOUT_REG { \
+ .name = "SAFEOUT", \
+ .of_match = of_match_ptr("SAFEOUT"), \
+ .regulators_node = of_match_ptr("regulators"), \
+ .id = MAX14577_SAFEOUT, \
+ .ops = &max14577_safeout_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .n_voltages = 1, \
+ .min_uV = MAX14577_REGULATOR_SAFEOUT_VOLTAGE, \
+ .enable_reg = MAX14577_REG_CONTROL2, \
+ .enable_mask = CTRL2_SFOUTORD_MASK, \
+}
+#define MAX14577_CHARGER_REG { \
+ .name = "CHARGER", \
+ .of_match = of_match_ptr("CHARGER"), \
+ .regulators_node = of_match_ptr("regulators"), \
+ .id = MAX14577_CHARGER, \
+ .ops = &max14577_charger_ops, \
+ .type = REGULATOR_CURRENT, \
+ .owner = THIS_MODULE, \
+ .enable_reg = MAX14577_CHG_REG_CHG_CTRL2, \
+ .enable_mask = CHGCTRL2_MBCHOSTEN_MASK, \
+}
+
+static const struct regulator_desc max14577_supported_regulators[] = {
+ [MAX14577_SAFEOUT] = MAX14577_SAFEOUT_REG,
+ [MAX14577_CHARGER] = MAX14577_CHARGER_REG,
+};
+
+static struct regulator_ops max77836_ldo_ops = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .list_voltage = regulator_list_voltage_linear,
+ .map_voltage = regulator_map_voltage_linear,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ /* TODO: add .set_suspend_mode */
+};
+
+#define MAX77836_LDO_REG(num) { \
+ .name = "LDO" # num, \
+ .of_match = of_match_ptr("LDO" # num), \
+ .regulators_node = of_match_ptr("regulators"), \
+ .id = MAX77836_LDO ## num, \
+ .ops = &max77836_ldo_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .n_voltages = MAX77836_REGULATOR_LDO_VOLTAGE_STEPS_NUM, \
+ .min_uV = MAX77836_REGULATOR_LDO_VOLTAGE_MIN, \
+ .uV_step = MAX77836_REGULATOR_LDO_VOLTAGE_STEP, \
+ .enable_reg = MAX77836_LDO_REG_CNFG1_LDO ## num, \
+ .enable_mask = MAX77836_CNFG1_LDO_PWRMD_MASK, \
+ .vsel_reg = MAX77836_LDO_REG_CNFG1_LDO ## num, \
+ .vsel_mask = MAX77836_CNFG1_LDO_TV_MASK, \
+}
+
+static const struct regulator_desc max77836_supported_regulators[] = {
+ [MAX14577_SAFEOUT] = MAX14577_SAFEOUT_REG,
+ [MAX14577_CHARGER] = MAX14577_CHARGER_REG,
+ [MAX77836_LDO1] = MAX77836_LDO_REG(1),
+ [MAX77836_LDO2] = MAX77836_LDO_REG(2),
+};
+
+#ifdef CONFIG_OF
+static struct of_regulator_match max14577_regulator_matches[] = {
+ { .name = "SAFEOUT", },
+ { .name = "CHARGER", },
+};
+
+static struct of_regulator_match max77836_regulator_matches[] = {
+ { .name = "SAFEOUT", },
+ { .name = "CHARGER", },
+ { .name = "LDO1", },
+ { .name = "LDO2", },
+};
+
+static inline struct regulator_init_data *match_init_data(int index,
+ enum maxim_device_type dev_type)
+{
+ switch (dev_type) {
+ case MAXIM_DEVICE_TYPE_MAX77836:
+ return max77836_regulator_matches[index].init_data;
+
+ case MAXIM_DEVICE_TYPE_MAX14577:
+ default:
+ return max14577_regulator_matches[index].init_data;
+ }
+}
+
+static inline struct device_node *match_of_node(int index,
+ enum maxim_device_type dev_type)
+{
+ switch (dev_type) {
+ case MAXIM_DEVICE_TYPE_MAX77836:
+ return max77836_regulator_matches[index].of_node;
+
+ case MAXIM_DEVICE_TYPE_MAX14577:
+ default:
+ return max14577_regulator_matches[index].of_node;
+ }
+}
+#else /* CONFIG_OF */
+static inline struct regulator_init_data *match_init_data(int index,
+ enum maxim_device_type dev_type)
+{
+ return NULL;
+}
+
+static inline struct device_node *match_of_node(int index,
+ enum maxim_device_type dev_type)
+{
+ return NULL;
+}
+#endif /* CONFIG_OF */
+
+/**
+ * Registers for regulators of max77836 use different I2C slave addresses so
+ * different regmaps must be used for them.
+ *
+ * Returns proper regmap for accessing regulator passed by id.
+ */
+static struct regmap *max14577_get_regmap(struct max14577 *max14577,
+ int reg_id)
+{
+ switch (max14577->dev_type) {
+ case MAXIM_DEVICE_TYPE_MAX77836:
+ switch (reg_id) {
+ case MAX77836_SAFEOUT ... MAX77836_CHARGER:
+ return max14577->regmap;
+ default:
+ /* MAX77836_LDO1 ... MAX77836_LDO2 */
+ return max14577->regmap_pmic;
+ }
+
+ case MAXIM_DEVICE_TYPE_MAX14577:
+ default:
+ return max14577->regmap;
+ }
+}
+
+static int max14577_regulator_probe(struct platform_device *pdev)
+{
+ struct max14577 *max14577 = dev_get_drvdata(pdev->dev.parent);
+ struct max14577_platform_data *pdata = dev_get_platdata(max14577->dev);
+ int i, ret = 0;
+ struct regulator_config config = {};
+ const struct regulator_desc *supported_regulators;
+ unsigned int supported_regulators_size;
+ enum maxim_device_type dev_type = max14577->dev_type;
+
+ switch (dev_type) {
+ case MAXIM_DEVICE_TYPE_MAX77836:
+ supported_regulators = max77836_supported_regulators;
+ supported_regulators_size = ARRAY_SIZE(max77836_supported_regulators);
+ break;
+ case MAXIM_DEVICE_TYPE_MAX14577:
+ default:
+ supported_regulators = max14577_supported_regulators;
+ supported_regulators_size = ARRAY_SIZE(max14577_supported_regulators);
+ }
+
+ config.dev = max14577->dev;
+ config.driver_data = max14577;
+
+ for (i = 0; i < supported_regulators_size; i++) {
+ struct regulator_dev *regulator;
+ /*
+ * Index of supported_regulators[] is also the id and must
+ * match index of pdata->regulators[].
+ */
+ if (pdata && pdata->regulators) {
+ config.init_data = pdata->regulators[i].initdata;
+ config.of_node = pdata->regulators[i].of_node;
+ } else {
+ config.init_data = match_init_data(i, dev_type);
+ config.of_node = match_of_node(i, dev_type);
+ }
+ config.regmap = max14577_get_regmap(max14577,
+ supported_regulators[i].id);
+
+ regulator = devm_regulator_register(&pdev->dev,
+ &supported_regulators[i], &config);
+ if (IS_ERR(regulator)) {
+ ret = PTR_ERR(regulator);
+ dev_err(&pdev->dev,
+ "Regulator init failed for %d/%s with error: %d\n",
+ i, supported_regulators[i].name, ret);
+ return ret;
+ }
+ }
+
+ return ret;
+}
+
+static const struct platform_device_id max14577_regulator_id[] = {
+ { "max14577-regulator", MAXIM_DEVICE_TYPE_MAX14577, },
+ { "max77836-regulator", MAXIM_DEVICE_TYPE_MAX77836, },
+ { }
+};
+MODULE_DEVICE_TABLE(platform, max14577_regulator_id);
+
+static struct platform_driver max14577_regulator_driver = {
+ .driver = {
+ .name = "max14577-regulator",
+ },
+ .probe = max14577_regulator_probe,
+ .id_table = max14577_regulator_id,
+};
+
+static int __init max14577_regulator_init(void)
+{
+ BUILD_BUG_ON(ARRAY_SIZE(max14577_supported_regulators) != MAX14577_REGULATOR_NUM);
+ BUILD_BUG_ON(ARRAY_SIZE(max77836_supported_regulators) != MAX77836_REGULATOR_NUM);
+
+ BUILD_BUG_ON(MAX77836_REGULATOR_LDO_VOLTAGE_MIN +
+ (MAX77836_REGULATOR_LDO_VOLTAGE_STEP *
+ (MAX77836_REGULATOR_LDO_VOLTAGE_STEPS_NUM - 1)) !=
+ MAX77836_REGULATOR_LDO_VOLTAGE_MAX);
+
+ return platform_driver_register(&max14577_regulator_driver);
+}
+subsys_initcall(max14577_regulator_init);
+
+static void __exit max14577_regulator_exit(void)
+{
+ platform_driver_unregister(&max14577_regulator_driver);
+}
+module_exit(max14577_regulator_exit);
+
+MODULE_AUTHOR("Krzysztof Kozlowski <k.kozlowski@samsung.com>");
+MODULE_DESCRIPTION("Maxim 14577/77836 regulator driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:max14577-regulator");
+++ /dev/null
-/*
- * max14577.c - Regulator driver for the Maxim 14577/77836
- *
- * Copyright (C) 2013,2014 Samsung Electronics
- * Krzysztof Kozlowski <k.kozlowski@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/regulator/driver.h>
-#include <linux/mfd/max14577.h>
-#include <linux/mfd/max14577-private.h>
-#include <linux/regulator/of_regulator.h>
-
-static int max14577_reg_is_enabled(struct regulator_dev *rdev)
-{
- int rid = rdev_get_id(rdev);
- struct regmap *rmap = rdev->regmap;
- u8 reg_data;
-
- switch (rid) {
- case MAX14577_CHARGER:
- max14577_read_reg(rmap, MAX14577_CHG_REG_CHG_CTRL2, ®_data);
- if ((reg_data & CHGCTRL2_MBCHOSTEN_MASK) == 0)
- return 0;
- max14577_read_reg(rmap, MAX14577_CHG_REG_STATUS3, ®_data);
- if ((reg_data & STATUS3_CGMBC_MASK) == 0)
- return 0;
- /* MBCHOSTEN and CGMBC are on */
- return 1;
- default:
- return -EINVAL;
- }
-}
-
-static int max14577_reg_get_current_limit(struct regulator_dev *rdev)
-{
- u8 reg_data;
- struct regmap *rmap = rdev->regmap;
- struct max14577 *max14577 = rdev_get_drvdata(rdev);
- const struct maxim_charger_current *limits =
- &maxim_charger_currents[max14577->dev_type];
-
- if (rdev_get_id(rdev) != MAX14577_CHARGER)
- return -EINVAL;
-
- max14577_read_reg(rmap, MAX14577_CHG_REG_CHG_CTRL4, ®_data);
-
- if ((reg_data & CHGCTRL4_MBCICHWRCL_MASK) == 0)
- return limits->min;
-
- reg_data = ((reg_data & CHGCTRL4_MBCICHWRCH_MASK) >>
- CHGCTRL4_MBCICHWRCH_SHIFT);
- return limits->high_start + reg_data * limits->high_step;
-}
-
-static int max14577_reg_set_current_limit(struct regulator_dev *rdev,
- int min_uA, int max_uA)
-{
- u8 reg_data;
- int ret;
- struct max14577 *max14577 = rdev_get_drvdata(rdev);
- const struct maxim_charger_current *limits =
- &maxim_charger_currents[max14577->dev_type];
-
- if (rdev_get_id(rdev) != MAX14577_CHARGER)
- return -EINVAL;
-
- ret = maxim_charger_calc_reg_current(limits, min_uA, max_uA, ®_data);
- if (ret)
- return ret;
-
- return max14577_update_reg(rdev->regmap, MAX14577_CHG_REG_CHG_CTRL4,
- CHGCTRL4_MBCICHWRCL_MASK | CHGCTRL4_MBCICHWRCH_MASK,
- reg_data);
-}
-
-static struct regulator_ops max14577_safeout_ops = {
- .is_enabled = regulator_is_enabled_regmap,
- .enable = regulator_enable_regmap,
- .disable = regulator_disable_regmap,
- .list_voltage = regulator_list_voltage_linear,
-};
-
-static struct regulator_ops max14577_charger_ops = {
- .is_enabled = max14577_reg_is_enabled,
- .enable = regulator_enable_regmap,
- .disable = regulator_disable_regmap,
- .get_current_limit = max14577_reg_get_current_limit,
- .set_current_limit = max14577_reg_set_current_limit,
-};
-
-#define MAX14577_SAFEOUT_REG { \
- .name = "SAFEOUT", \
- .of_match = of_match_ptr("SAFEOUT"), \
- .regulators_node = of_match_ptr("regulators"), \
- .id = MAX14577_SAFEOUT, \
- .ops = &max14577_safeout_ops, \
- .type = REGULATOR_VOLTAGE, \
- .owner = THIS_MODULE, \
- .n_voltages = 1, \
- .min_uV = MAX14577_REGULATOR_SAFEOUT_VOLTAGE, \
- .enable_reg = MAX14577_REG_CONTROL2, \
- .enable_mask = CTRL2_SFOUTORD_MASK, \
-}
-#define MAX14577_CHARGER_REG { \
- .name = "CHARGER", \
- .of_match = of_match_ptr("CHARGER"), \
- .regulators_node = of_match_ptr("regulators"), \
- .id = MAX14577_CHARGER, \
- .ops = &max14577_charger_ops, \
- .type = REGULATOR_CURRENT, \
- .owner = THIS_MODULE, \
- .enable_reg = MAX14577_CHG_REG_CHG_CTRL2, \
- .enable_mask = CHGCTRL2_MBCHOSTEN_MASK, \
-}
-
-static const struct regulator_desc max14577_supported_regulators[] = {
- [MAX14577_SAFEOUT] = MAX14577_SAFEOUT_REG,
- [MAX14577_CHARGER] = MAX14577_CHARGER_REG,
-};
-
-static struct regulator_ops max77836_ldo_ops = {
- .is_enabled = regulator_is_enabled_regmap,
- .enable = regulator_enable_regmap,
- .disable = regulator_disable_regmap,
- .list_voltage = regulator_list_voltage_linear,
- .map_voltage = regulator_map_voltage_linear,
- .get_voltage_sel = regulator_get_voltage_sel_regmap,
- .set_voltage_sel = regulator_set_voltage_sel_regmap,
- /* TODO: add .set_suspend_mode */
-};
-
-#define MAX77836_LDO_REG(num) { \
- .name = "LDO" # num, \
- .of_match = of_match_ptr("LDO" # num), \
- .regulators_node = of_match_ptr("regulators"), \
- .id = MAX77836_LDO ## num, \
- .ops = &max77836_ldo_ops, \
- .type = REGULATOR_VOLTAGE, \
- .owner = THIS_MODULE, \
- .n_voltages = MAX77836_REGULATOR_LDO_VOLTAGE_STEPS_NUM, \
- .min_uV = MAX77836_REGULATOR_LDO_VOLTAGE_MIN, \
- .uV_step = MAX77836_REGULATOR_LDO_VOLTAGE_STEP, \
- .enable_reg = MAX77836_LDO_REG_CNFG1_LDO ## num, \
- .enable_mask = MAX77836_CNFG1_LDO_PWRMD_MASK, \
- .vsel_reg = MAX77836_LDO_REG_CNFG1_LDO ## num, \
- .vsel_mask = MAX77836_CNFG1_LDO_TV_MASK, \
-}
-
-static const struct regulator_desc max77836_supported_regulators[] = {
- [MAX14577_SAFEOUT] = MAX14577_SAFEOUT_REG,
- [MAX14577_CHARGER] = MAX14577_CHARGER_REG,
- [MAX77836_LDO1] = MAX77836_LDO_REG(1),
- [MAX77836_LDO2] = MAX77836_LDO_REG(2),
-};
-
-#ifdef CONFIG_OF
-static struct of_regulator_match max14577_regulator_matches[] = {
- { .name = "SAFEOUT", },
- { .name = "CHARGER", },
-};
-
-static struct of_regulator_match max77836_regulator_matches[] = {
- { .name = "SAFEOUT", },
- { .name = "CHARGER", },
- { .name = "LDO1", },
- { .name = "LDO2", },
-};
-
-static inline struct regulator_init_data *match_init_data(int index,
- enum maxim_device_type dev_type)
-{
- switch (dev_type) {
- case MAXIM_DEVICE_TYPE_MAX77836:
- return max77836_regulator_matches[index].init_data;
-
- case MAXIM_DEVICE_TYPE_MAX14577:
- default:
- return max14577_regulator_matches[index].init_data;
- }
-}
-
-static inline struct device_node *match_of_node(int index,
- enum maxim_device_type dev_type)
-{
- switch (dev_type) {
- case MAXIM_DEVICE_TYPE_MAX77836:
- return max77836_regulator_matches[index].of_node;
-
- case MAXIM_DEVICE_TYPE_MAX14577:
- default:
- return max14577_regulator_matches[index].of_node;
- }
-}
-#else /* CONFIG_OF */
-static inline struct regulator_init_data *match_init_data(int index,
- enum maxim_device_type dev_type)
-{
- return NULL;
-}
-
-static inline struct device_node *match_of_node(int index,
- enum maxim_device_type dev_type)
-{
- return NULL;
-}
-#endif /* CONFIG_OF */
-
-/**
- * Registers for regulators of max77836 use different I2C slave addresses so
- * different regmaps must be used for them.
- *
- * Returns proper regmap for accessing regulator passed by id.
- */
-static struct regmap *max14577_get_regmap(struct max14577 *max14577,
- int reg_id)
-{
- switch (max14577->dev_type) {
- case MAXIM_DEVICE_TYPE_MAX77836:
- switch (reg_id) {
- case MAX77836_SAFEOUT ... MAX77836_CHARGER:
- return max14577->regmap;
- default:
- /* MAX77836_LDO1 ... MAX77836_LDO2 */
- return max14577->regmap_pmic;
- }
-
- case MAXIM_DEVICE_TYPE_MAX14577:
- default:
- return max14577->regmap;
- }
-}
-
-static int max14577_regulator_probe(struct platform_device *pdev)
-{
- struct max14577 *max14577 = dev_get_drvdata(pdev->dev.parent);
- struct max14577_platform_data *pdata = dev_get_platdata(max14577->dev);
- int i, ret = 0;
- struct regulator_config config = {};
- const struct regulator_desc *supported_regulators;
- unsigned int supported_regulators_size;
- enum maxim_device_type dev_type = max14577->dev_type;
-
- switch (dev_type) {
- case MAXIM_DEVICE_TYPE_MAX77836:
- supported_regulators = max77836_supported_regulators;
- supported_regulators_size = ARRAY_SIZE(max77836_supported_regulators);
- break;
- case MAXIM_DEVICE_TYPE_MAX14577:
- default:
- supported_regulators = max14577_supported_regulators;
- supported_regulators_size = ARRAY_SIZE(max14577_supported_regulators);
- }
-
- config.dev = max14577->dev;
- config.driver_data = max14577;
-
- for (i = 0; i < supported_regulators_size; i++) {
- struct regulator_dev *regulator;
- /*
- * Index of supported_regulators[] is also the id and must
- * match index of pdata->regulators[].
- */
- if (pdata && pdata->regulators) {
- config.init_data = pdata->regulators[i].initdata;
- config.of_node = pdata->regulators[i].of_node;
- } else {
- config.init_data = match_init_data(i, dev_type);
- config.of_node = match_of_node(i, dev_type);
- }
- config.regmap = max14577_get_regmap(max14577,
- supported_regulators[i].id);
-
- regulator = devm_regulator_register(&pdev->dev,
- &supported_regulators[i], &config);
- if (IS_ERR(regulator)) {
- ret = PTR_ERR(regulator);
- dev_err(&pdev->dev,
- "Regulator init failed for %d/%s with error: %d\n",
- i, supported_regulators[i].name, ret);
- return ret;
- }
- }
-
- return ret;
-}
-
-static const struct platform_device_id max14577_regulator_id[] = {
- { "max14577-regulator", MAXIM_DEVICE_TYPE_MAX14577, },
- { "max77836-regulator", MAXIM_DEVICE_TYPE_MAX77836, },
- { }
-};
-MODULE_DEVICE_TABLE(platform, max14577_regulator_id);
-
-static struct platform_driver max14577_regulator_driver = {
- .driver = {
- .name = "max14577-regulator",
- },
- .probe = max14577_regulator_probe,
- .id_table = max14577_regulator_id,
-};
-
-static int __init max14577_regulator_init(void)
-{
- BUILD_BUG_ON(ARRAY_SIZE(max14577_supported_regulators) != MAX14577_REGULATOR_NUM);
- BUILD_BUG_ON(ARRAY_SIZE(max77836_supported_regulators) != MAX77836_REGULATOR_NUM);
-
- BUILD_BUG_ON(MAX77836_REGULATOR_LDO_VOLTAGE_MIN +
- (MAX77836_REGULATOR_LDO_VOLTAGE_STEP *
- (MAX77836_REGULATOR_LDO_VOLTAGE_STEPS_NUM - 1)) !=
- MAX77836_REGULATOR_LDO_VOLTAGE_MAX);
-
- return platform_driver_register(&max14577_regulator_driver);
-}
-subsys_initcall(max14577_regulator_init);
-
-static void __exit max14577_regulator_exit(void)
-{
- platform_driver_unregister(&max14577_regulator_driver);
-}
-module_exit(max14577_regulator_exit);
-
-MODULE_AUTHOR("Krzysztof Kozlowski <k.kozlowski@samsung.com>");
-MODULE_DESCRIPTION("Maxim 14577/77836 regulator driver");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:max14577-regulator");
--- /dev/null
+/*
+ * max77693.c - Regulator driver for the Maxim 77693 and 77843
+ *
+ * Copyright (C) 2013-2015 Samsung Electronics
+ * Jonghwa Lee <jonghwa3.lee@samsung.com>
+ * Krzysztof Kozlowski <k.kozlowski.k@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * This driver is based on max77686.c
+ */
+
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/export.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/mfd/max77693.h>
+#include <linux/mfd/max77693-common.h>
+#include <linux/mfd/max77693-private.h>
+#include <linux/mfd/max77843-private.h>
+#include <linux/regulator/of_regulator.h>
+#include <linux/regmap.h>
+
+/*
+ * ID for MAX77843 regulators.
+ * There is no need for such for MAX77693.
+ */
+enum max77843_regulator_type {
+ MAX77843_SAFEOUT1 = 0,
+ MAX77843_SAFEOUT2,
+ MAX77843_CHARGER,
+
+ MAX77843_NUM,
+};
+
+/* Register differences between chargers: MAX77693 and MAX77843 */
+struct chg_reg_data {
+ unsigned int linear_reg;
+ unsigned int linear_mask;
+ unsigned int uA_step;
+ unsigned int min_sel;
+};
+
+/*
+ * MAX77693 CHARGER regulator - Min : 20mA, Max : 2580mA, step : 20mA
+ * 0x00, 0x01, 0x2, 0x03 = 60 mA
+ * 0x04 ~ 0x7E = (60 + (X - 3) * 20) mA
+ * Actually for MAX77693 the driver manipulates the maximum input current,
+ * not the fast charge current (output). This should be fixed.
+ *
+ * On MAX77843 the calculation formula is the same (except values).
+ * Fortunately it properly manipulates the fast charge current.
+ */
+static int max77693_chg_get_current_limit(struct regulator_dev *rdev)
+{
+ const struct chg_reg_data *reg_data = rdev_get_drvdata(rdev);
+ unsigned int chg_min_uA = rdev->constraints->min_uA;
+ unsigned int chg_max_uA = rdev->constraints->max_uA;
+ unsigned int reg, sel;
+ unsigned int val;
+ int ret;
+
+ ret = regmap_read(rdev->regmap, reg_data->linear_reg, ®);
+ if (ret < 0)
+ return ret;
+
+ sel = reg & reg_data->linear_mask;
+
+ /* the first four codes for charger current are all 60mA */
+ if (sel <= reg_data->min_sel)
+ sel = 0;
+ else
+ sel -= reg_data->min_sel;
+
+ val = chg_min_uA + reg_data->uA_step * sel;
+ if (val > chg_max_uA)
+ return -EINVAL;
+
+ return val;
+}
+
+static int max77693_chg_set_current_limit(struct regulator_dev *rdev,
+ int min_uA, int max_uA)
+{
+ const struct chg_reg_data *reg_data = rdev_get_drvdata(rdev);
+ unsigned int chg_min_uA = rdev->constraints->min_uA;
+ int sel = 0;
+
+ while (chg_min_uA + reg_data->uA_step * sel < min_uA)
+ sel++;
+
+ if (chg_min_uA + reg_data->uA_step * sel > max_uA)
+ return -EINVAL;
+
+ /* the first four codes for charger current are all 60mA */
+ sel += reg_data->min_sel;
+
+ return regmap_write(rdev->regmap, reg_data->linear_reg, sel);
+}
+/* end of CHARGER regulator ops */
+
+/* Returns regmap suitable for given regulator on chosen device */
+static struct regmap *max77693_get_regmap(enum max77693_types type,
+ struct max77693_dev *max77693,
+ int reg_id)
+{
+ if (type == TYPE_MAX77693)
+ return max77693->regmap;
+
+ /* Else: TYPE_MAX77843 */
+ switch (reg_id) {
+ case MAX77843_SAFEOUT1:
+ case MAX77843_SAFEOUT2:
+ return max77693->regmap;
+ case MAX77843_CHARGER:
+ return max77693->regmap_chg;
+ default:
+ return max77693->regmap;
+ }
+}
+
+static const unsigned int max77693_safeout_table[] = {
+ 4850000,
+ 4900000,
+ 4950000,
+ 3300000,
+};
+
+static struct regulator_ops max77693_safeout_ops = {
+ .list_voltage = regulator_list_voltage_table,
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+};
+
+static struct regulator_ops max77693_charger_ops = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .get_current_limit = max77693_chg_get_current_limit,
+ .set_current_limit = max77693_chg_set_current_limit,
+};
+
+#define max77693_regulator_desc_esafeout(_num) { \
+ .name = "ESAFEOUT"#_num, \
+ .id = MAX77693_ESAFEOUT##_num, \
+ .of_match = of_match_ptr("ESAFEOUT"#_num), \
+ .regulators_node = of_match_ptr("regulators"), \
+ .n_voltages = 4, \
+ .ops = &max77693_safeout_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .volt_table = max77693_safeout_table, \
+ .vsel_reg = MAX77693_CHG_REG_SAFEOUT_CTRL, \
+ .vsel_mask = SAFEOUT_CTRL_SAFEOUT##_num##_MASK, \
+ .enable_reg = MAX77693_CHG_REG_SAFEOUT_CTRL, \
+ .enable_mask = SAFEOUT_CTRL_ENSAFEOUT##_num##_MASK , \
+}
+
+static const struct regulator_desc max77693_supported_regulators[] = {
+ max77693_regulator_desc_esafeout(1),
+ max77693_regulator_desc_esafeout(2),
+ {
+ .name = "CHARGER",
+ .id = MAX77693_CHARGER,
+ .of_match = of_match_ptr("CHARGER"),
+ .regulators_node = of_match_ptr("regulators"),
+ .ops = &max77693_charger_ops,
+ .type = REGULATOR_CURRENT,
+ .owner = THIS_MODULE,
+ .enable_reg = MAX77693_CHG_REG_CHG_CNFG_00,
+ .enable_mask = CHG_CNFG_00_CHG_MASK |
+ CHG_CNFG_00_BUCK_MASK,
+ .enable_val = CHG_CNFG_00_CHG_MASK | CHG_CNFG_00_BUCK_MASK,
+ },
+};
+
+static const struct chg_reg_data max77693_chg_reg_data = {
+ .linear_reg = MAX77693_CHG_REG_CHG_CNFG_09,
+ .linear_mask = CHG_CNFG_09_CHGIN_ILIM_MASK,
+ .uA_step = 20000,
+ .min_sel = 3,
+};
+
+#define max77843_regulator_desc_esafeout(num) { \
+ .name = "SAFEOUT" # num, \
+ .id = MAX77843_SAFEOUT ## num, \
+ .ops = &max77693_safeout_ops, \
+ .of_match = of_match_ptr("SAFEOUT" # num), \
+ .regulators_node = of_match_ptr("regulators"), \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .n_voltages = ARRAY_SIZE(max77693_safeout_table), \
+ .volt_table = max77693_safeout_table, \
+ .enable_reg = MAX77843_SYS_REG_SAFEOUTCTRL, \
+ .enable_mask = MAX77843_REG_SAFEOUTCTRL_ENSAFEOUT ## num, \
+ .vsel_reg = MAX77843_SYS_REG_SAFEOUTCTRL, \
+ .vsel_mask = MAX77843_REG_SAFEOUTCTRL_SAFEOUT ## num ## _MASK, \
+}
+
+static const struct regulator_desc max77843_supported_regulators[] = {
+ [MAX77843_SAFEOUT1] = max77843_regulator_desc_esafeout(1),
+ [MAX77843_SAFEOUT2] = max77843_regulator_desc_esafeout(2),
+ [MAX77843_CHARGER] = {
+ .name = "CHARGER",
+ .id = MAX77843_CHARGER,
+ .ops = &max77693_charger_ops,
+ .of_match = of_match_ptr("CHARGER"),
+ .regulators_node = of_match_ptr("regulators"),
+ .type = REGULATOR_CURRENT,
+ .owner = THIS_MODULE,
+ .enable_reg = MAX77843_CHG_REG_CHG_CNFG_00,
+ .enable_mask = MAX77843_CHG_MASK,
+ .enable_val = MAX77843_CHG_MASK,
+ },
+};
+
+static const struct chg_reg_data max77843_chg_reg_data = {
+ .linear_reg = MAX77843_CHG_REG_CHG_CNFG_02,
+ .linear_mask = MAX77843_CHG_FAST_CHG_CURRENT_MASK,
+ .uA_step = MAX77843_CHG_FAST_CHG_CURRENT_STEP,
+ .min_sel = 2,
+};
+
+static int max77693_pmic_probe(struct platform_device *pdev)
+{
+ enum max77693_types type = platform_get_device_id(pdev)->driver_data;
+ struct max77693_dev *iodev = dev_get_drvdata(pdev->dev.parent);
+ const struct regulator_desc *regulators;
+ unsigned int regulators_size;
+ int i;
+ struct regulator_config config = { };
+
+ config.dev = iodev->dev;
+
+ switch (type) {
+ case TYPE_MAX77693:
+ regulators = max77693_supported_regulators;
+ regulators_size = ARRAY_SIZE(max77693_supported_regulators);
+ config.driver_data = (void *)&max77693_chg_reg_data;
+ break;
+ case TYPE_MAX77843:
+ regulators = max77843_supported_regulators;
+ regulators_size = ARRAY_SIZE(max77843_supported_regulators);
+ config.driver_data = (void *)&max77843_chg_reg_data;
+ break;
+ default:
+ dev_err(&pdev->dev, "Unsupported device type: %u\n", type);
+ return -ENODEV;
+ }
+
+ for (i = 0; i < regulators_size; i++) {
+ struct regulator_dev *rdev;
+
+ config.regmap = max77693_get_regmap(type, iodev,
+ regulators[i].id);
+
+ rdev = devm_regulator_register(&pdev->dev,
+ ®ulators[i], &config);
+ if (IS_ERR(rdev)) {
+ dev_err(&pdev->dev,
+ "Failed to initialize regulator-%d\n", i);
+ return PTR_ERR(rdev);
+ }
+ }
+
+ return 0;
+}
+
+static const struct platform_device_id max77693_pmic_id[] = {
+ { "max77693-pmic", TYPE_MAX77693 },
+ { "max77843-regulator", TYPE_MAX77843 },
+ {},
+};
+
+MODULE_DEVICE_TABLE(platform, max77693_pmic_id);
+
+static struct platform_driver max77693_pmic_driver = {
+ .driver = {
+ .name = "max77693-pmic",
+ },
+ .probe = max77693_pmic_probe,
+ .id_table = max77693_pmic_id,
+};
+
+static int __init max77693_pmic_init(void)
+{
+ return platform_driver_register(&max77693_pmic_driver);
+}
+subsys_initcall(max77693_pmic_init);
+
+static void __exit max77693_pmic_cleanup(void)
+{
+ platform_driver_unregister(&max77693_pmic_driver);
+}
+module_exit(max77693_pmic_cleanup);
+
+MODULE_DESCRIPTION("MAXIM 77693/77843 regulator driver");
+MODULE_AUTHOR("Jonghwa Lee <jonghwa3.lee@samsung.com>");
+MODULE_AUTHOR("Krzysztof Kozlowski <k.kozlowski.k@gmail.com>");
+MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * max77693.c - Regulator driver for the Maxim 77693 and 77843
- *
- * Copyright (C) 2013-2015 Samsung Electronics
- * Jonghwa Lee <jonghwa3.lee@samsung.com>
- * Krzysztof Kozlowski <k.kozlowski.k@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * This driver is based on max77686.c
- */
-
-#include <linux/err.h>
-#include <linux/slab.h>
-#include <linux/platform_device.h>
-#include <linux/module.h>
-#include <linux/export.h>
-#include <linux/regulator/driver.h>
-#include <linux/regulator/machine.h>
-#include <linux/mfd/max77693.h>
-#include <linux/mfd/max77693-common.h>
-#include <linux/mfd/max77693-private.h>
-#include <linux/mfd/max77843-private.h>
-#include <linux/regulator/of_regulator.h>
-#include <linux/regmap.h>
-
-/*
- * ID for MAX77843 regulators.
- * There is no need for such for MAX77693.
- */
-enum max77843_regulator_type {
- MAX77843_SAFEOUT1 = 0,
- MAX77843_SAFEOUT2,
- MAX77843_CHARGER,
-
- MAX77843_NUM,
-};
-
-/* Register differences between chargers: MAX77693 and MAX77843 */
-struct chg_reg_data {
- unsigned int linear_reg;
- unsigned int linear_mask;
- unsigned int uA_step;
- unsigned int min_sel;
-};
-
-/*
- * MAX77693 CHARGER regulator - Min : 20mA, Max : 2580mA, step : 20mA
- * 0x00, 0x01, 0x2, 0x03 = 60 mA
- * 0x04 ~ 0x7E = (60 + (X - 3) * 20) mA
- * Actually for MAX77693 the driver manipulates the maximum input current,
- * not the fast charge current (output). This should be fixed.
- *
- * On MAX77843 the calculation formula is the same (except values).
- * Fortunately it properly manipulates the fast charge current.
- */
-static int max77693_chg_get_current_limit(struct regulator_dev *rdev)
-{
- const struct chg_reg_data *reg_data = rdev_get_drvdata(rdev);
- unsigned int chg_min_uA = rdev->constraints->min_uA;
- unsigned int chg_max_uA = rdev->constraints->max_uA;
- unsigned int reg, sel;
- unsigned int val;
- int ret;
-
- ret = regmap_read(rdev->regmap, reg_data->linear_reg, ®);
- if (ret < 0)
- return ret;
-
- sel = reg & reg_data->linear_mask;
-
- /* the first four codes for charger current are all 60mA */
- if (sel <= reg_data->min_sel)
- sel = 0;
- else
- sel -= reg_data->min_sel;
-
- val = chg_min_uA + reg_data->uA_step * sel;
- if (val > chg_max_uA)
- return -EINVAL;
-
- return val;
-}
-
-static int max77693_chg_set_current_limit(struct regulator_dev *rdev,
- int min_uA, int max_uA)
-{
- const struct chg_reg_data *reg_data = rdev_get_drvdata(rdev);
- unsigned int chg_min_uA = rdev->constraints->min_uA;
- int sel = 0;
-
- while (chg_min_uA + reg_data->uA_step * sel < min_uA)
- sel++;
-
- if (chg_min_uA + reg_data->uA_step * sel > max_uA)
- return -EINVAL;
-
- /* the first four codes for charger current are all 60mA */
- sel += reg_data->min_sel;
-
- return regmap_write(rdev->regmap, reg_data->linear_reg, sel);
-}
-/* end of CHARGER regulator ops */
-
-/* Returns regmap suitable for given regulator on chosen device */
-static struct regmap *max77693_get_regmap(enum max77693_types type,
- struct max77693_dev *max77693,
- int reg_id)
-{
- if (type == TYPE_MAX77693)
- return max77693->regmap;
-
- /* Else: TYPE_MAX77843 */
- switch (reg_id) {
- case MAX77843_SAFEOUT1:
- case MAX77843_SAFEOUT2:
- return max77693->regmap;
- case MAX77843_CHARGER:
- return max77693->regmap_chg;
- default:
- return max77693->regmap;
- }
-}
-
-static const unsigned int max77693_safeout_table[] = {
- 4850000,
- 4900000,
- 4950000,
- 3300000,
-};
-
-static struct regulator_ops max77693_safeout_ops = {
- .list_voltage = regulator_list_voltage_table,
- .is_enabled = regulator_is_enabled_regmap,
- .enable = regulator_enable_regmap,
- .disable = regulator_disable_regmap,
- .get_voltage_sel = regulator_get_voltage_sel_regmap,
- .set_voltage_sel = regulator_set_voltage_sel_regmap,
-};
-
-static struct regulator_ops max77693_charger_ops = {
- .is_enabled = regulator_is_enabled_regmap,
- .enable = regulator_enable_regmap,
- .disable = regulator_disable_regmap,
- .get_current_limit = max77693_chg_get_current_limit,
- .set_current_limit = max77693_chg_set_current_limit,
-};
-
-#define max77693_regulator_desc_esafeout(_num) { \
- .name = "ESAFEOUT"#_num, \
- .id = MAX77693_ESAFEOUT##_num, \
- .of_match = of_match_ptr("ESAFEOUT"#_num), \
- .regulators_node = of_match_ptr("regulators"), \
- .n_voltages = 4, \
- .ops = &max77693_safeout_ops, \
- .type = REGULATOR_VOLTAGE, \
- .owner = THIS_MODULE, \
- .volt_table = max77693_safeout_table, \
- .vsel_reg = MAX77693_CHG_REG_SAFEOUT_CTRL, \
- .vsel_mask = SAFEOUT_CTRL_SAFEOUT##_num##_MASK, \
- .enable_reg = MAX77693_CHG_REG_SAFEOUT_CTRL, \
- .enable_mask = SAFEOUT_CTRL_ENSAFEOUT##_num##_MASK , \
-}
-
-static const struct regulator_desc max77693_supported_regulators[] = {
- max77693_regulator_desc_esafeout(1),
- max77693_regulator_desc_esafeout(2),
- {
- .name = "CHARGER",
- .id = MAX77693_CHARGER,
- .of_match = of_match_ptr("CHARGER"),
- .regulators_node = of_match_ptr("regulators"),
- .ops = &max77693_charger_ops,
- .type = REGULATOR_CURRENT,
- .owner = THIS_MODULE,
- .enable_reg = MAX77693_CHG_REG_CHG_CNFG_00,
- .enable_mask = CHG_CNFG_00_CHG_MASK |
- CHG_CNFG_00_BUCK_MASK,
- .enable_val = CHG_CNFG_00_CHG_MASK | CHG_CNFG_00_BUCK_MASK,
- },
-};
-
-static const struct chg_reg_data max77693_chg_reg_data = {
- .linear_reg = MAX77693_CHG_REG_CHG_CNFG_09,
- .linear_mask = CHG_CNFG_09_CHGIN_ILIM_MASK,
- .uA_step = 20000,
- .min_sel = 3,
-};
-
-#define max77843_regulator_desc_esafeout(num) { \
- .name = "SAFEOUT" # num, \
- .id = MAX77843_SAFEOUT ## num, \
- .ops = &max77693_safeout_ops, \
- .of_match = of_match_ptr("SAFEOUT" # num), \
- .regulators_node = of_match_ptr("regulators"), \
- .type = REGULATOR_VOLTAGE, \
- .owner = THIS_MODULE, \
- .n_voltages = ARRAY_SIZE(max77693_safeout_table), \
- .volt_table = max77693_safeout_table, \
- .enable_reg = MAX77843_SYS_REG_SAFEOUTCTRL, \
- .enable_mask = MAX77843_REG_SAFEOUTCTRL_ENSAFEOUT ## num, \
- .vsel_reg = MAX77843_SYS_REG_SAFEOUTCTRL, \
- .vsel_mask = MAX77843_REG_SAFEOUTCTRL_SAFEOUT ## num ## _MASK, \
-}
-
-static const struct regulator_desc max77843_supported_regulators[] = {
- [MAX77843_SAFEOUT1] = max77843_regulator_desc_esafeout(1),
- [MAX77843_SAFEOUT2] = max77843_regulator_desc_esafeout(2),
- [MAX77843_CHARGER] = {
- .name = "CHARGER",
- .id = MAX77843_CHARGER,
- .ops = &max77693_charger_ops,
- .of_match = of_match_ptr("CHARGER"),
- .regulators_node = of_match_ptr("regulators"),
- .type = REGULATOR_CURRENT,
- .owner = THIS_MODULE,
- .enable_reg = MAX77843_CHG_REG_CHG_CNFG_00,
- .enable_mask = MAX77843_CHG_MASK,
- .enable_val = MAX77843_CHG_MASK,
- },
-};
-
-static const struct chg_reg_data max77843_chg_reg_data = {
- .linear_reg = MAX77843_CHG_REG_CHG_CNFG_02,
- .linear_mask = MAX77843_CHG_FAST_CHG_CURRENT_MASK,
- .uA_step = MAX77843_CHG_FAST_CHG_CURRENT_STEP,
- .min_sel = 2,
-};
-
-static int max77693_pmic_probe(struct platform_device *pdev)
-{
- enum max77693_types type = platform_get_device_id(pdev)->driver_data;
- struct max77693_dev *iodev = dev_get_drvdata(pdev->dev.parent);
- const struct regulator_desc *regulators;
- unsigned int regulators_size;
- int i;
- struct regulator_config config = { };
-
- config.dev = iodev->dev;
-
- switch (type) {
- case TYPE_MAX77693:
- regulators = max77693_supported_regulators;
- regulators_size = ARRAY_SIZE(max77693_supported_regulators);
- config.driver_data = (void *)&max77693_chg_reg_data;
- break;
- case TYPE_MAX77843:
- regulators = max77843_supported_regulators;
- regulators_size = ARRAY_SIZE(max77843_supported_regulators);
- config.driver_data = (void *)&max77843_chg_reg_data;
- break;
- default:
- dev_err(&pdev->dev, "Unsupported device type: %u\n", type);
- return -ENODEV;
- }
-
- for (i = 0; i < regulators_size; i++) {
- struct regulator_dev *rdev;
-
- config.regmap = max77693_get_regmap(type, iodev,
- regulators[i].id);
-
- rdev = devm_regulator_register(&pdev->dev,
- ®ulators[i], &config);
- if (IS_ERR(rdev)) {
- dev_err(&pdev->dev,
- "Failed to initialize regulator-%d\n", i);
- return PTR_ERR(rdev);
- }
- }
-
- return 0;
-}
-
-static const struct platform_device_id max77693_pmic_id[] = {
- { "max77693-pmic", TYPE_MAX77693 },
- { "max77843-regulator", TYPE_MAX77843 },
- {},
-};
-
-MODULE_DEVICE_TABLE(platform, max77693_pmic_id);
-
-static struct platform_driver max77693_pmic_driver = {
- .driver = {
- .name = "max77693-pmic",
- },
- .probe = max77693_pmic_probe,
- .id_table = max77693_pmic_id,
-};
-
-static int __init max77693_pmic_init(void)
-{
- return platform_driver_register(&max77693_pmic_driver);
-}
-subsys_initcall(max77693_pmic_init);
-
-static void __exit max77693_pmic_cleanup(void)
-{
- platform_driver_unregister(&max77693_pmic_driver);
-}
-module_exit(max77693_pmic_cleanup);
-
-MODULE_DESCRIPTION("MAXIM 77693/77843 regulator driver");
-MODULE_AUTHOR("Jonghwa Lee <jonghwa3.lee@samsung.com>");
-MODULE_AUTHOR("Krzysztof Kozlowski <k.kozlowski.k@gmail.com>");
-MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * max8997.c - Regulator driver for the Maxim 8997/8966
+ *
+ * Copyright (C) 2011 Samsung Electronics
+ * MyungJoo Ham <myungjoo.ham@smasung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * This driver is based on max8998.c
+ */
+
+#include <linux/bug.h>
+#include <linux/err.h>
+#include <linux/gpio.h>
+#include <linux/of_gpio.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/mfd/max8997.h>
+#include <linux/mfd/max8997-private.h>
+#include <linux/regulator/of_regulator.h>
+
+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 <myungjoo.ham@samsung.com>");
+MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * max8997.c - Regulator driver for the Maxim 8997/8966
- *
- * Copyright (C) 2011 Samsung Electronics
- * MyungJoo Ham <myungjoo.ham@smasung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * This driver is based on max8998.c
- */
-
-#include <linux/bug.h>
-#include <linux/err.h>
-#include <linux/gpio.h>
-#include <linux/of_gpio.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/regulator/driver.h>
-#include <linux/regulator/machine.h>
-#include <linux/mfd/max8997.h>
-#include <linux/mfd/max8997-private.h>
-#include <linux/regulator/of_regulator.h>
-
-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 <myungjoo.ham@samsung.com>");
-MODULE_LICENSE("GPL");
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff