[PATCH] power: supply: sbs-battery: Add PbAc, NiZn, RAM, and ZnAr support

[Boris Shtrasman <borissh1983@gmail.com>]

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@gmail.com>
---
 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