[RFC PATCH v3 5/9] power: supply: Add constant battery aging degradation to batinfo
From: Matti Vaittinen <hidden>
Date: 2021-11-16 12:27:28
Also in:
linux-pm, lkml
Subsystem:
power supply class/subsystem and drivers, the rest · Maintainers:
Sebastian Reichel, Linus Torvalds
Few batteries can be modelled to degrade at constant rate for each increased cycle. Add degradation constant for such simple model to batinfo. Signed-off-by: Matti Vaittinen <redacted> --- RFCv3: New patch --- drivers/power/supply/power_supply_core.c | 3 +++ include/linux/power_supply.h | 1 + 2 files changed, 4 insertions(+)
diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c
index 47176ed2570b..ebc961b5aa45 100644
--- a/drivers/power/supply/power_supply_core.c
+++ b/drivers/power/supply/power_supply_core.c@@ -639,6 +639,7 @@ int power_supply_dev_get_battery_info(struct device *dev, info->resist_table = NULL; info->temp_dgrd_values = 0; info->temp_dgrd = NULL; + info->degrade_cycle_uah = 0; for (index = 0; index < POWER_SUPPLY_OCV_TEMP_MAX; index++) { info->ocv_table[index] = NULL;
@@ -689,6 +690,8 @@ int power_supply_dev_get_battery_info(struct device *dev, dev_warn(dev, "%s unknown battery type\n", value); } + fwnode_property_read_u32(battery_node, "degrade-cycle-microamp-hours", + &info->degrade_cycle_uah); fwnode_property_read_u32(battery_node, "energy-full-design-microwatt-hours", &info->energy_full_design_uwh); fwnode_property_read_u32(battery_node, "charge-full-design-microamp-hours",
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index ef7db73a5bd1..c5118265b3ab 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h@@ -403,6 +403,7 @@ struct power_supply_battery_info { int resist_table_size; int temp_dgrd_values; struct power_supply_temp_degr *temp_dgrd; + int degrade_cycle_uah; }; extern struct atomic_notifier_head power_supply_notifier;
--
2.31.1
--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND
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