// SPDX-License-Identifier: GPL-2.0+ // // max77686.c - Regulator driver for the Maxim 77686 // // Copyright (C) 2012 Samsung Electronics // Chiwoong Byun <[email protected]> // Jonghwa Lee <[email protected]> // // This driver is based on max8997.c #include <linux/kernel.h> #include <linux/bug.h> #include <linux/err.h> #include <linux/gpio/consumer.h> #include <linux/slab.h> #include <linux/platform_device.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> #include <linux/regulator/of_regulator.h> #include <linux/mfd/max77686.h> #include <linux/mfd/max77686-private.h> #define MAX77686_LDO_MINUV … #define MAX77686_LDO_UVSTEP … #define MAX77686_LDO_LOW_MINUV … #define MAX77686_LDO_LOW_UVSTEP … #define MAX77686_BUCK_MINUV … #define MAX77686_BUCK_UVSTEP … #define MAX77686_BUCK_ENABLE_TIME … #define MAX77686_DVS_ENABLE_TIME … #define MAX77686_RAMP_DELAY … #define MAX77686_DVS_RAMP_DELAY … #define MAX77686_DVS_MINUV … #define MAX77686_DVS_UVSTEP … /* * Value for configuring buck[89] and LDO{20,21,22} as GPIO control. * It is the same as 'off' for other regulators. */ #define MAX77686_GPIO_CONTROL … /* * Values used for configuring LDOs and bucks. * Forcing low power mode: LDO1, 3-5, 9, 13, 17-26 */ #define MAX77686_LDO_LOWPOWER … /* * On/off controlled by PWRREQ: * - LDO2, 6-8, 10-12, 14-16 * - buck[1234] */ #define MAX77686_OFF_PWRREQ … /* Low power mode controlled by PWRREQ: All LDOs */ #define MAX77686_LDO_LOWPOWER_PWRREQ … /* Forcing low power mode: buck[234] */ #define MAX77686_BUCK_LOWPOWER … #define MAX77686_NORMAL … #define MAX77686_OPMODE_SHIFT … #define MAX77686_OPMODE_BUCK234_SHIFT … #define MAX77686_OPMODE_MASK … #define MAX77686_VSEL_MASK … #define MAX77686_DVS_VSEL_MASK … #define MAX77686_RAMP_RATE_MASK … #define MAX77686_REGULATORS … #define MAX77686_LDOS … struct max77686_data { … }; static unsigned int max77686_get_opmode_shift(int id) { … } /* * When regulator is configured for GPIO control then it * replaces "normal" mode. Any change from low power mode to normal * should actually change to GPIO control. * Map normal mode to proper value for such regulators. */ static unsigned int max77686_map_normal_mode(struct max77686_data *max77686, int id) { … } /* Some BUCKs and LDOs supports Normal[ON/OFF] mode during suspend */ static int max77686_set_suspend_disable(struct regulator_dev *rdev) { … } /* Some LDOs supports [LPM/Normal]ON mode during suspend state */ static int max77686_set_suspend_mode(struct regulator_dev *rdev, unsigned int mode) { … } /* Some LDOs supports LPM-ON/OFF/Normal-ON mode during suspend state */ static int max77686_ldo_set_suspend_mode(struct regulator_dev *rdev, unsigned int mode) { … } static int max77686_enable(struct regulator_dev *rdev) { … } static int max77686_of_parse_cb(struct device_node *np, const struct regulator_desc *desc, struct regulator_config *config) { … } static const unsigned int max77686_buck_dvs_ramp_table[] = …; static const struct regulator_ops max77686_ops = …; static const struct regulator_ops max77686_ldo_ops = …; static const struct regulator_ops max77686_buck1_ops = …; static const struct regulator_ops max77686_buck_dvs_ops = …; #define regulator_desc_ldo(num) … #define regulator_desc_lpm_ldo(num) … #define regulator_desc_ldo_low(num) … #define regulator_desc_ldo1_low(num) … #define regulator_desc_buck(num) … #define regulator_desc_buck1(num) … #define regulator_desc_buck_dvs(num) … static const struct regulator_desc regulators[] = …; static int max77686_pmic_probe(struct platform_device *pdev) { … } static const struct platform_device_id max77686_pmic_id[] = …; MODULE_DEVICE_TABLE(platform, max77686_pmic_id); static struct platform_driver max77686_pmic_driver = …; module_platform_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
Codebase Browser
linux