[PATCH] power: supply: sbs-battery: Add PbAc, NiZn, RAM, and ZnAr support
From: Boris Shtrasman
Date: Sun Jun 21 2026 - 11:05:11 EST
Add support for PbAc, NiZn, RAM, and ZnAr chemistries as defined in the
Smart Battery Data Specification v1.1 (Section 5.1.30 DeviceChemistry).
Currently, the sbs-battery driver only handles LION, LiP, NiCd and NiMH.
The Smart Battery specification defines 8 possible values:
- Lead Acid (PbAc)
- Lithium Ion (LION)
- Nickel Cadmium (NiCd)
- Nickel Metal Hydride (NiMH)
- Nickel Zinc (NiZn)
- Rechargeable Alkaline-Manganese (RAM)
- Zinc Air (ZnAr)
- Lithium Polymer (LiP)
Map the missing specification values to their respective core kernel
POWER_SUPPLY_TECHNOLOGY definitions.
Link: https://sbs-forum.org/specs/sbdat110.pdf
Signed-off-by: Boris Shtrasman <borissh1983@xxxxxxxxx>
---
drivers/power/supply/sbs-battery.c | 8 ++++++++
include/linux/power_supply.h | 4 ++++
2 files changed, 12 insertions(+)
diff --git a/drivers/power/supply/sbs-battery.c b/drivers/power/supply/sbs-battery.c
index 43c48196c167..42a941e99155 100644
--- a/drivers/power/supply/sbs-battery.c
+++ b/drivers/power/supply/sbs-battery.c
@@ -860,6 +860,14 @@ static int sbs_get_chemistry(struct sbs_info *chip,
chip->technology = POWER_SUPPLY_TECHNOLOGY_NiCd;
else if (!strncasecmp(chemistry, "NiMH", 4))
chip->technology = POWER_SUPPLY_TECHNOLOGY_NiMH;
+ else if (!strncasecmp(chemistry, "PbAc", 4))
+ chip->technology = POWER_SUPPLY_TECHNOLOGY_PbAc;
+ else if (!strncasecmp(chemistry, "NiZn", 4))
+ chip->technology = POWER_SUPPLY_TECHNOLOGY_NiZn;
+ else if (!strncasecmp(chemistry, "RAM", 3))
+ chip->technology = POWER_SUPPLY_TECHNOLOGY_RAM;
+ else if (!strncasecmp(chemistry, "ZnAr", 4))
+ chip->technology = POWER_SUPPLY_TECHNOLOGY_ZnAr;
else
chip->technology = POWER_SUPPLY_TECHNOLOGY_UNKNOWN;
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index 7a5e4c3242a0..034800cd21da 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -83,6 +83,10 @@ enum {
POWER_SUPPLY_TECHNOLOGY_LiFe,
POWER_SUPPLY_TECHNOLOGY_NiCd,
POWER_SUPPLY_TECHNOLOGY_LiMn,
+ POWER_SUPPLY_TECHNOLOGY_PbAc,
+ POWER_SUPPLY_TECHNOLOGY_NiZn,
+ POWER_SUPPLY_TECHNOLOGY_RAM,
+ POWER_SUPPLY_TECHNOLOGY_ZnAr,
};
enum {
--
2.47.3