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power: supply: Support battery temperature device-tree properties 

The generic battery temperature properties are already supported by the
power-supply core. Let's support parsing of the common battery temperature
properties from a device-tree.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Dmitry Osipenko 2020-08-14 00:34:02 +03:00 committed by Sebastian Reichel
parent c1f90759b3
commit 00cda13e33
2 changed files with 25 additions and 0 deletions
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19
drivers/power/supply/power_supply_core.c
View File

@ -579,6 +579,12 @@ int power_supply_get_battery_info(struct power_supply *psy,
info->charge_term_current_ua = -EINVAL;
info->constant_charge_current_max_ua = -EINVAL;
info->constant_charge_voltage_max_uv = -EINVAL;
info->temp_ambient_alert_min = INT_MIN;
info->temp_ambient_alert_max = INT_MAX;
info->temp_alert_min = INT_MIN;
info->temp_alert_max = INT_MAX;
info->temp_min = INT_MIN;
info->temp_max = INT_MAX;
info->factory_internal_resistance_uohm = -EINVAL;
info->resist_table = NULL;
@ -639,6 +645,19 @@ int power_supply_get_battery_info(struct power_supply *psy,
of_property_read_u32(battery_np, "factory-internal-resistance-micro-ohms",
&info->factory_internal_resistance_uohm);
of_property_read_u32_index(battery_np, "ambient-celsius",
0, &info->temp_ambient_alert_min);
of_property_read_u32_index(battery_np, "ambient-celsius",
1, &info->temp_ambient_alert_max);
of_property_read_u32_index(battery_np, "alert-celsius",
0, &info->temp_alert_min);
of_property_read_u32_index(battery_np, "alert-celsius",
1, &info->temp_alert_max);
of_property_read_u32_index(battery_np, "operating-range-celsius",
0, &info->temp_min);
of_property_read_u32_index(battery_np, "operating-range-celsius",
1, &info->temp_max);
len = of_property_count_u32_elems(battery_np, "ocv-capacity-celsius");
if (len < 0 && len != -EINVAL) {
err = len;

6
include/linux/power_supply.h
View File

@ -365,6 +365,12 @@ struct power_supply_battery_info {
int constant_charge_voltage_max_uv; /* microVolts */
int factory_internal_resistance_uohm; /* microOhms */
int ocv_temp[POWER_SUPPLY_OCV_TEMP_MAX];/* celsius */
int temp_ambient_alert_min; /* celsius */
int temp_ambient_alert_max; /* celsius */
int temp_alert_min; /* celsius */
int temp_alert_max; /* celsius */
int temp_min; /* celsius */
int temp_max; /* celsius */
struct power_supply_battery_ocv_table *ocv_table[POWER_SUPPLY_OCV_TEMP_MAX];
int ocv_table_size[POWER_SUPPLY_OCV_TEMP_MAX];
struct power_supply_resistance_temp_table *resist_table;