From f4856c20c137a73d73e448caa3964098024248bf Mon Sep 17 00:00:00 2001 From: Armin Wolf Date: Tue, 29 Apr 2025 02:36:03 +0200 Subject: [PATCH] power: supply: core: Add additional health status values MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Some batteries can signal when an internal fuse was blown. In such a case POWER_SUPPLY_HEALTH_DEAD is too vague for userspace applications to perform meaningful diagnostics. Additionally some batteries can also signal when some of their internal cells are imbalanced. In such a case returning POWER_SUPPLY_HEALTH_UNSPEC_FAILURE is again too vague for userspace applications to perform meaningful diagnostics. Add new health status values for both cases. Signed-off-by: Armin Wolf Reviewed-by: Sebastian Reichel Link: https://lore.kernel.org/r/20250429003606.303870-1-W_Armin@gmx.de Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen --- Documentation/ABI/testing/sysfs-class-power | 2 +- drivers/power/supply/power_supply_sysfs.c | 2 ++ include/linux/power_supply.h | 2 ++ 3 files changed, 5 insertions(+), 1 deletion(-) diff --git a/Documentation/ABI/testing/sysfs-class-power b/Documentation/ABI/testing/sysfs-class-power index 78afb2422fc5a..dfa824bccf828 100644 --- a/Documentation/ABI/testing/sysfs-class-power +++ b/Documentation/ABI/testing/sysfs-class-power @@ -456,7 +456,7 @@ Description: "Over voltage", "Under voltage", "Unspecified failure", "Cold", "Watchdog timer expire", "Safety timer expire", "Over current", "Calibration required", "Warm", - "Cool", "Hot", "No battery" + "Cool", "Hot", "No battery", "Blown fuse", "Cell imbalance" What: /sys/class/power_supply//precharge_current Date: June 2017 diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c index f769d5941d0d3..b6918adcabd70 100644 --- a/drivers/power/supply/power_supply_sysfs.c +++ b/drivers/power/supply/power_supply_sysfs.c @@ -110,6 +110,8 @@ static const char * const POWER_SUPPLY_HEALTH_TEXT[] = { [POWER_SUPPLY_HEALTH_COOL] = "Cool", [POWER_SUPPLY_HEALTH_HOT] = "Hot", [POWER_SUPPLY_HEALTH_NO_BATTERY] = "No battery", + [POWER_SUPPLY_HEALTH_BLOWN_FUSE] = "Blown fuse", + [POWER_SUPPLY_HEALTH_CELL_IMBALANCE] = "Cell imbalance", }; static const char * const POWER_SUPPLY_TECHNOLOGY_TEXT[] = { diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index cbec930430a79..03786c8c2efec 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -71,6 +71,8 @@ enum { POWER_SUPPLY_HEALTH_COOL, POWER_SUPPLY_HEALTH_HOT, POWER_SUPPLY_HEALTH_NO_BATTERY, + POWER_SUPPLY_HEALTH_BLOWN_FUSE, + POWER_SUPPLY_HEALTH_CELL_IMBALANCE, }; enum { -- 2.47.2