include/linux/mfd/max14577.h

   1 /*
   2  * max14577.h - Driver for the Maxim 14577/77836
   3  *
   4  * Copyright (C) 2014 Samsung Electrnoics
   5  * Chanwoo Choi <cw00.choi@samsung.com>
   6  * Krzysztof Kozlowski <krzk@kernel.org>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * This driver is based on max8997.h
  19  *
  20  * MAX14577 has MUIC, Charger devices.
  21  * The devices share the same I2C bus and interrupt line
  22  * included in this mfd driver.
  23  *
  24  * MAX77836 has additional PMIC and Fuel-Gauge on different I2C slave
  25  * addresses.
  26  */
  27
  28 #ifndef __MAX14577_H__
  29 #define __MAX14577_H__
  30
  31 #include <linux/regulator/consumer.h>
  32
  33 /* MAX14577 regulator IDs */
  34 enum max14577_regulators {
  35         MAX14577_SAFEOUT = 0,
  36         MAX14577_CHARGER,
  37
  38         MAX14577_REGULATOR_NUM,
  39 };
  40
  41 /* MAX77836 regulator IDs */
  42 enum max77836_regulators {
  43         MAX77836_SAFEOUT = 0,
  44         MAX77836_CHARGER,
  45         MAX77836_LDO1,
  46         MAX77836_LDO2,
  47
  48         MAX77836_REGULATOR_NUM,
  49 };
  50
  51 struct max14577_regulator_platform_data {
  52         int id;
  53         struct regulator_init_data *initdata;
  54         struct device_node *of_node;
  55 };
  56
  57 struct max14577_charger_platform_data {
  58         u32 constant_uvolt;
  59         u32 fast_charge_uamp;
  60         u32 eoc_uamp;
  61         u32 ovp_uvolt;
  62 };
  63
  64 /*
  65  * MAX14577 MFD platform data
  66  */
  67 struct max14577_platform_data {
  68         /* IRQ */
  69         int irq_base;
  70
  71         /* current control GPIOs */
  72         int gpio_pogo_vbatt_en;
  73         int gpio_pogo_vbus_en;
  74
  75         /* current control GPIO control function */
  76         int (*set_gpio_pogo_vbatt_en) (int gpio_val);
  77         int (*set_gpio_pogo_vbus_en) (int gpio_val);
  78
  79         int (*set_gpio_pogo_cb) (int new_dev);
  80
  81         struct max14577_regulator_platform_data *regulators;
  82 };
  83
  84 /*
  85  * Valid limits of current for max14577 and max77836 chargers.
  86  * They must correspond to MBCICHWRCL and MBCICHWRCH fields in CHGCTRL4
  87  * register for given chipset.
  88  */
  89 struct maxim_charger_current {
  90         /* Minimal current, set in CHGCTRL4/MBCICHWRCL, uA */
  91         unsigned int min;
  92         /*
  93          * Minimal current when high setting is active,
  94          * set in CHGCTRL4/MBCICHWRCH, uA
  95          */
  96         unsigned int high_start;
  97         /* Value of one step in high setting, uA */
  98         unsigned int high_step;
  99         /* Maximum current of high setting, uA */
 100         unsigned int max;
 101 };
 102
 103 extern const struct maxim_charger_current maxim_charger_currents[];
 104 extern int maxim_charger_calc_reg_current(const struct maxim_charger_current *limits,
 105                 unsigned int min_ua, unsigned int max_ua, u8 *dst);
 106
 107 #endif /* __MAX14577_H__ */