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Thu, 12 Nov 2026 05:49:36 -0800 (PST) Received: from DESKTOP-NM9EKIA ([180.67.33.100]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-8baaa2a6c51sm3550580b3a.14.2026.11.12.05.49.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Nov 2026 05:49:35 -0800 (PST) From: Joonhoe Kim <26rote@gmail.com> To: sre@kernel.org Cc: konrad.dybcio@oss.qualcomm.com, jingyi.wang@oss.qualcomm.com, kamal.wadhwa@oss.qualcomm.com, anjelique.melendez@oss.qualcomm.com, dhruvin.rajpura@oss.qualcomm.com, andersson@kernel.org, dmitry.baryshkov@oss.qualcomm.com, linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 1/2] power: supply: qcom_battmgr: fix the battery current sign on Kaanapali Date: Thu, 12 Nov 2026 22:49:26 +0900 Message-ID: <20261112134927.95-2-26rote@gmail.com> X-Mailer: git-send-email 2.55.0.windows.5 In-Reply-To: <20261112134927.95-1-26rote@gmail.com> References: <20261112134927.95-1-26rote@gmail.com> X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The Kaanapali battery firmware reports the battery current with discharge positive: on a Lenovo Y700 Gen 5 (TB323FU) current_now reads -9.1 A while charging and +0.57 A on battery. The power_supply ABI has charging positive, and upower reports such a charging battery as discharging. Other firmware behind the same callback uses the ABI sign [1], so negate the value only for qcom,kaanapali-pmic-glink. Fixes: 16a7c32e586e ("power: supply: qcom_battmgr: Add support for Glymur and Kaanapali") Link: https://lore.kernel.org/all/20260829054546.86210-1-jan.brummer@tabos.org/ [1] Signed-off-by: Joonhoe Kim <26rote@gmail.com> --- v2: no code change; reworded the device name. The sign is checked only on the Y700 Gen 5. On v1 Konrad asked Jingyi to check QRD/MTP; no reply yet: https://lore.kernel.org/all/0e5b7d2e-e141-4ce4-a873-b65bd9ef3c4a@oss.qualcomm.com/ drivers/power/supply/qcom_battmgr.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/power/supply/qcom_battmgr.c b/drivers/power/supply/qcom_battmgr.c index d6e3edbab..58e103e08 100644 --- a/drivers/power/supply/qcom_battmgr.c +++ b/drivers/power/supply/qcom_battmgr.c @@ -316,6 +316,7 @@ struct qcom_battmgr { struct pmic_glink_client *client; enum qcom_battmgr_variant variant; + bool current_inverted; struct power_supply *ac_psy; struct power_supply *bat_psy; @@ -1574,6 +1575,8 @@ static void qcom_battmgr_sm8350_callback(struct qcom_battmgr *battmgr, break; case BATT_CURR_NOW: battmgr->status.current_now = le32_to_cpu(resp->intval.value); + if (battmgr->current_inverted) + battmgr->status.current_now = -battmgr->status.current_now; break; case BATT_TEMP: val = le32_to_cpu(resp->intval.value); @@ -1804,6 +1807,9 @@ static int qcom_battmgr_probe(struct auxiliary_device *adev, else battmgr->variant = QCOM_BATTMGR_SM8350; + battmgr->current_inverted = device_is_compatible(dev->parent, + "qcom,kaanapali-pmic-glink"); + ret = qcom_battmgr_charge_control_thresholds_init(battmgr); if (ret < 0) return dev_err_probe(dev, ret, -- 2.53.0