| Subbaraman Narayanamurthy | 92264bd | 2017-03-23 00:52:12 -0700 | [diff] [blame] | 1 | /* Copyright (c) 2013-2014, 2016 The Linux Foundation. All rights reserved. |
| 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/of.h> |
| 14 | #include <linux/batterydata-lib.h> |
| 15 | |
| 16 | #ifdef CONFIG_OF_BATTERYDATA |
| 17 | /** |
| 18 | * of_batterydata_read_data() - Populate battery data from the device tree |
| 19 | * @container_node: pointer to the battery-data container device node |
| 20 | * containing the profile nodes. |
| 21 | * @batt_data: pointer to an allocated bms_battery_data structure that the |
| 22 | * loaded profile will be written to. |
| 23 | * @batt_id_uv: ADC voltage of the battery id line used to differentiate |
| 24 | * between different battery profiles. If there are multiple |
| 25 | * battery data in the device tree, the one with the closest |
| 26 | * battery id resistance will be automatically loaded. |
| 27 | * |
| 28 | * This routine loads the closest match battery data from device tree based on |
| 29 | * the battery id reading. Then, it will try to load all the relevant data from |
| 30 | * the device tree battery data profile. |
| 31 | * |
| 32 | * If any of the lookup table pointers are NULL, this routine will skip trying |
| 33 | * to read them. |
| 34 | */ |
| 35 | int of_batterydata_read_data(struct device_node *container_node, |
| 36 | struct bms_battery_data *batt_data, |
| 37 | int batt_id_uv); |
| 38 | /** |
| 39 | * of_batterydata_get_best_profile() - Find matching battery data device node |
| 40 | * @batterydata_container_node: pointer to the battery-data container device |
| 41 | * node containing the profile nodes. |
| 42 | * @batt_id_kohm: Battery ID in KOhms for which we want to find the profile. |
| 43 | * @batt_type: Battery type which we want to force load the profile. |
| 44 | * |
| 45 | * This routine returns a device_node pointer to the closest match battery data |
| 46 | * from device tree based on the battery id reading. |
| 47 | */ |
| 48 | struct device_node *of_batterydata_get_best_profile( |
| 49 | struct device_node *batterydata_container_node, |
| 50 | int batt_id_kohm, const char *batt_type); |
| 51 | #else |
| 52 | static inline int of_batterydata_read_data(struct device_node *container_node, |
| 53 | struct bms_battery_data *batt_data, |
| 54 | int batt_id_uv) |
| 55 | { |
| 56 | return -ENXIO; |
| 57 | } |
| 58 | static inline struct device_node *of_batterydata_get_best_profile( |
| 59 | struct device_node *batterydata_container_node, |
| 60 | int batt_id_kohm, const char *batt_type) |
| 61 | { |
| 62 | return -ENXIO; |
| 63 | } |
| 64 | #endif /* CONFIG_OF_QPNP */ |