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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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e30110e9c9
Remove hard-coded values for: - Fast Charge current, - End Of Charge current, - Fast Charge timer, - Overvoltage Protection Threshold, - Battery Constant Voltage, and use DTS or sysfs to configure them. This allows using the max14577 charger driver with different batteries. Now the charger driver requires valid configuration data from DTS. In case of wrong configuration data it fails during probe. The fast charge timer is configured through sysfs entry. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
108 lines
2.7 KiB
C
108 lines
2.7 KiB
C
/*
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* max14577.h - Driver for the Maxim 14577/77836
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*
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* Copyright (C) 2014 Samsung Electrnoics
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* Chanwoo Choi <cw00.choi@samsung.com>
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* Krzysztof Kozlowski <k.kozlowski@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* This driver is based on max8997.h
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*
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* MAX14577 has MUIC, Charger devices.
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* The devices share the same I2C bus and interrupt line
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* included in this mfd driver.
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*
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* MAX77836 has additional PMIC and Fuel-Gauge on different I2C slave
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* addresses.
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*/
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#ifndef __MAX14577_H__
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#define __MAX14577_H__
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#include <linux/regulator/consumer.h>
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/* MAX14577 regulator IDs */
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enum max14577_regulators {
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MAX14577_SAFEOUT = 0,
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MAX14577_CHARGER,
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MAX14577_REGULATOR_NUM,
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};
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/* MAX77836 regulator IDs */
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enum max77836_regulators {
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MAX77836_SAFEOUT = 0,
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MAX77836_CHARGER,
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MAX77836_LDO1,
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MAX77836_LDO2,
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MAX77836_REGULATOR_NUM,
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};
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struct max14577_regulator_platform_data {
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int id;
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struct regulator_init_data *initdata;
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struct device_node *of_node;
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};
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struct max14577_charger_platform_data {
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u32 constant_uvolt;
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u32 fast_charge_uamp;
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u32 eoc_uamp;
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u32 ovp_uvolt;
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};
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/*
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* MAX14577 MFD platform data
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*/
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struct max14577_platform_data {
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/* IRQ */
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int irq_base;
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/* current control GPIOs */
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int gpio_pogo_vbatt_en;
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int gpio_pogo_vbus_en;
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/* current control GPIO control function */
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int (*set_gpio_pogo_vbatt_en) (int gpio_val);
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int (*set_gpio_pogo_vbus_en) (int gpio_val);
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int (*set_gpio_pogo_cb) (int new_dev);
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struct max14577_regulator_platform_data *regulators;
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};
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/*
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* Valid limits of current for max14577 and max77836 chargers.
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* They must correspond to MBCICHWRCL and MBCICHWRCH fields in CHGCTRL4
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* register for given chipset.
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*/
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struct maxim_charger_current {
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/* Minimal current, set in CHGCTRL4/MBCICHWRCL, uA */
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unsigned int min;
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/*
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* Minimal current when high setting is active,
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* set in CHGCTRL4/MBCICHWRCH, uA
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*/
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unsigned int high_start;
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/* Value of one step in high setting, uA */
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unsigned int high_step;
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/* Maximum current of high setting, uA */
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unsigned int max;
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};
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extern const struct maxim_charger_current maxim_charger_currents[];
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extern int maxim_charger_calc_reg_current(const struct maxim_charger_current *limits,
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unsigned int min_ua, unsigned int max_ua, u8 *dst);
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#endif /* __MAX14577_H__ */
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