linux-kernel - [PATCH] power: supply: qcom_battmgr: Add lithium-polymer entry

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Message-Id: <20250523-psy-qcom-battmgr-add-lipo-entry-v1-1-938c20a43a25@linaro.org>
Date: Fri, 23 May 2025 13:14:22 +0300
From: Abel Vesa <abel.vesa@...aro.org>
To: Sebastian Reichel <sre@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Abel Vesa <abel.vesa@...aro.org>
Subject: [PATCH] power: supply: qcom_battmgr: Add lithium-polymer entry

On some Dell XPS 13 (9345) variants, the battery used is lithium-polymer
based. Currently, this is reported as unknown technology due to the entry
missing.

[ 4083.135325] Unknown battery technology 'LIP'

Add another check for lithium-polymer in the technology parsing callback
and return that instead of unknown.

Signed-off-by: Abel Vesa <abel.vesa@...aro.org>
---
 drivers/power/supply/qcom_battmgr.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/power/supply/qcom_battmgr.c b/drivers/power/supply/qcom_battmgr.c
index fe27676fbc7cd12292caa6fb3b5b46a18c426e6d..32c85939b8973422ee417c3f1552f2355658cf06 100644
--- a/drivers/power/supply/qcom_battmgr.c
+++ b/drivers/power/supply/qcom_battmgr.c
@@ -981,6 +981,8 @@ static unsigned int qcom_battmgr_sc8280xp_parse_technology(const char *chemistry
 {
 	if (!strncmp(chemistry, "LIO", BATTMGR_CHEMISTRY_LEN))
 		return POWER_SUPPLY_TECHNOLOGY_LION;
+	else if (!strncmp(chemistry, "LIP", BATTMGR_CHEMISTRY_LEN))
+		return POWER_SUPPLY_TECHNOLOGY_LIPO;
 
 	pr_err("Unknown battery technology '%s'\n", chemistry);
 	return POWER_SUPPLY_TECHNOLOGY_UNKNOWN;

---
base-commit: 176e917e010cb7dcc605f11d2bc33f304292482b
change-id: 20250523-psy-qcom-battmgr-add-lipo-entry-e75b3be303b6

Best regards,
-- 
Abel Vesa <abel.vesa@...aro.org>