// SPDX-License-Identifier: GPL-2.0+ // // max14577.c - mfd core driver for the Maxim 14577/77836 // // Copyright (C) 2014 Samsung Electronics // Chanwoo Choi <[email protected]> // Krzysztof Kozlowski <[email protected]> // // This driver is based on max8997.c #include <linux/err.h> #include <linux/i2c.h> #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/interrupt.h> #include <linux/mfd/core.h> #include <linux/mfd/max14577.h> #include <linux/mfd/max14577-private.h> /* * Table of valid charger currents for different Maxim chipsets. * It is placed here because it is used by both charger and regulator driver. */ const struct maxim_charger_current maxim_charger_currents[] = …; EXPORT_SYMBOL_GPL(…); /* * maxim_charger_calc_reg_current - Calculate register value for current * @limits: constraints for charger, matching the MBCICHWRC register * @min_ua: minimal requested current, micro Amps * @max_ua: maximum requested current, micro Amps * @dst: destination to store calculated register value * * Calculates the value of MBCICHWRC (Fast Battery Charge Current) register * for given current and stores it under pointed 'dst'. The stored value * combines low bit (MBCICHWRCL) and high bits (MBCICHWRCH). It is also * properly shifted. * * The calculated register value matches the current which: * - is always between <limits.min, limits.max>; * - is always less or equal to max_ua; * - is the highest possible value; * - may be lower than min_ua. * * On success returns 0. On error returns -EINVAL (requested min/max current * is outside of given charger limits) and 'dst' is not set. */ int maxim_charger_calc_reg_current(const struct maxim_charger_current *limits, unsigned int min_ua, unsigned int max_ua, u8 *dst) { … } EXPORT_SYMBOL_GPL(…); static const struct mfd_cell max14577_devs[] = …; static const struct mfd_cell max77836_devs[] = …; static const struct of_device_id max14577_dt_match[] = …; static bool max14577_muic_volatile_reg(struct device *dev, unsigned int reg) { … } static bool max77836_muic_volatile_reg(struct device *dev, unsigned int reg) { … } static const struct regmap_config max14577_muic_regmap_config = …; static const struct regmap_config max77836_pmic_regmap_config = …; static const struct regmap_irq max14577_irqs[] = …; static const struct regmap_irq_chip max14577_irq_chip = …; static const struct regmap_irq max77836_muic_irqs[] = …; static const struct regmap_irq_chip max77836_muic_irq_chip = …; static const struct regmap_irq max77836_pmic_irqs[] = …; static const struct regmap_irq_chip max77836_pmic_irq_chip = …; static void max14577_print_dev_type(struct max14577 *max14577) { … } /* * Max77836 specific initialization code for driver probe. * Adds new I2C dummy device, regmap and regmap IRQ chip. * Unmasks Interrupt Source register. * * On success returns 0. * On failure returns errno and reverts any changes done so far (e.g. remove * I2C dummy device), except masking the INT SRC register. */ static int max77836_init(struct max14577 *max14577) { … } /* * Max77836 specific de-initialization code for driver remove. */ static void max77836_remove(struct max14577 *max14577) { … } static int max14577_i2c_probe(struct i2c_client *i2c) { … } static void max14577_i2c_remove(struct i2c_client *i2c) { … } static const struct i2c_device_id max14577_i2c_id[] = …; MODULE_DEVICE_TABLE(i2c, max14577_i2c_id); static int max14577_suspend(struct device *dev) { … } static int max14577_resume(struct device *dev) { … } static DEFINE_SIMPLE_DEV_PM_OPS(max14577_pm, max14577_suspend, max14577_resume); static struct i2c_driver max14577_i2c_driver = …; static int __init max14577_i2c_init(void) { … } module_init(…) …; static void __exit max14577_i2c_exit(void) { … } module_exit(max14577_i2c_exit); MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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