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/* Copyright (c) 2013-2014, 2016-2019 The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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/of.h>
#include <linux/batterydata-lib.h>
#ifdef CONFIG_OF_BATTERYDATA
/**
* of_batterydata_read_data() - Populate battery data from the device tree
* @container_node: pointer to the battery-data container device node
* containing the profile nodes.
* @batt_data: pointer to an allocated bms_battery_data structure that the
* loaded profile will be written to.
* @batt_id_uv: ADC voltage of the battery id line used to differentiate
* between different battery profiles. If there are multiple
* battery data in the device tree, the one with the closest
* battery id resistance will be automatically loaded.
*
* This routine loads the closest match battery data from device tree based on
* the battery id reading. Then, it will try to load all the relevant data from
* the device tree battery data profile.
*
* If any of the lookup table pointers are NULL, this routine will skip trying
* to read them.
*/
int of_batterydata_read_data(struct device_node *container_node,
struct bms_battery_data *batt_data,
int batt_id_uv);
/**
* of_batterydata_get_best_profile() - Find matching battery data device node
* @batterydata_container_node: pointer to the battery-data container device
* node containing the profile nodes.
* @batt_id_kohm: Battery ID in KOhms for which we want to find the profile.
* @batt_type: Battery type which we want to force load the profile.
*
* This routine returns a device_node pointer to the closest match battery data
* from device tree based on the battery id reading.
*/
struct device_node *of_batterydata_get_best_profile(
const struct device_node *batterydata_container_node,
int batt_id_kohm, const char *batt_type);
/**
* of_batterydata_get_best_aged_profile() - Find best aged battery profile
* @batterydata_container_node: pointer to the battery-data container device
* node containing the profile nodes.
* @batt_id_kohm: Battery ID in KOhms for which we want to find the profile.
* @batt_age_level: Battery age level.
* @avail_age_level: Available battery age level.
*
* This routine returns a device_node pointer to the closest match battery data
* from device tree based on the battery id reading and age level.
*/
struct device_node *of_batterydata_get_best_aged_profile(
const struct device_node *batterydata_container_node,
int batt_id_kohm, int batt_age_level, int *avail_age_level);
/**
* of_batterydata_get_aged_profile_count() - Gets the number of aged profiles
* @batterydata_node: pointer to the battery-data container device
* node containing the profile nodes.
* @batt_id_kohm: Battery ID in KOhms for which we want to find the profile.
* @count: Number of aged profiles available to support SOH based profile
* loading.
*
* This routine returns zero if valid number of aged profiles are available.
*/
int of_batterydata_get_aged_profile_count(
const struct device_node *batterydata_node,
int batt_id_kohm, int *count);
/**
* of_batterydata_read_soh_aged_profiles() - Reads the data from aged profiles
* @batterydata_node: pointer to the battery-data container device
* node containing the profile nodes.
* @batt_id_kohm: Battery ID in KOhms for which we want to find the profile.
* @soh_data: SOH data from the profile if it is found to be valid.
*
* This routine returns zero if SOH data of aged profiles is valid.
*/
int of_batterydata_read_soh_aged_profiles(
const struct device_node *batterydata_node,
int batt_id_kohm, struct soh_range *soh_data);
#else
static inline int of_batterydata_read_data(struct device_node *container_node,
struct bms_battery_data *batt_data,
int batt_id_uv)
{
return -ENXIO;
}
static inline struct device_node *of_batterydata_get_best_profile(
const struct device_node *batterydata_container_node,
int batt_id_kohm, const char *batt_type)
{
return NULL;
}
static inline struct device_node *of_batterydata_get_best_aged_profile(
const struct device_node *batterydata_container_node,
int batt_id_kohm, u32 batt_age_level)
{
return NULL;
}
static inline int of_batterydata_get_aged_profile_count(
const struct device_node *batterydata_node,
int batt_id_kohm, int *count)
{
return -EINVAL;
}
static inline int of_batterydata_read_soh_aged_profiles(
const struct device_node *batterydata_node,
int batt_id_kohm, struct soh_range *soh_data)
{
return -EINVAL;
}
#endif /* CONFIG_OF_BATTERYDATA */
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