linux-kernel - [PATCH 06/11] power: supply: qcom_smbx: respect battery charge-term-current-microamp

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Message-Id: <20250619-smb2-smb5-support-v1-6-ac5dec51b6e1@linaro.org>
Date: Thu, 19 Jun 2025 16:55:14 +0200
From: Casey Connolly <casey.connolly@...aro.org>
To: Sebastian Reichel <sre@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>, Kees Cook <kees@...nel.org>, 
 "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Sebastian Reichel <sebastian.reichel@...labora.com>, 
 linux-hardening@...r.kernel.org, Casey Connolly <casey.connolly@...aro.org>
Subject: [PATCH 06/11] power: supply: qcom_smbx: respect battery
 charge-term-current-microamp

Respect the max current limit set on the battery node, one some devices
this is set conservatively to avoid overheating since they only have a
single charger IC (instead of two in parallel).

Signed-off-by: Casey Connolly <casey.connolly@...aro.org>
---
 drivers/power/supply/qcom_smbx.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/power/supply/qcom_smbx.c b/drivers/power/supply/qcom_smbx.c
index fc2a8e20435639a9da4d966c43271beaeb57a03f..7fc232fa7260a7422ac12a48686cd7d396edd9a4 100644
--- a/drivers/power/supply/qcom_smbx.c
+++ b/drivers/power/supply/qcom_smbx.c
@@ -583,9 +583,9 @@ static void smb_status_change_work(struct work_struct *work)
 	case POWER_SUPPLY_USB_TYPE_CDP:
 		current_ua = CDP_CURRENT_UA;
 		break;
 	case POWER_SUPPLY_USB_TYPE_DCP:
-		current_ua = DCP_CURRENT_UA;
+		current_ua = chip->batt_info->constant_charge_current_max_ua;
 		break;
 	case POWER_SUPPLY_USB_TYPE_SDP:
 	default:
 		current_ua = SDP_CURRENT_UA;
@@ -989,8 +989,10 @@ static int smb_probe(struct platform_device *pdev)
 	rc = power_supply_get_battery_info(chip->chg_psy, &chip->batt_info);
 	if (rc)
 		return dev_err_probe(chip->dev, rc,
 				     "Failed to get battery info\n");
+	if (chip->batt_info->constant_charge_current_max_ua == -EINVAL)
+		chip->batt_info->constant_charge_current_max_ua = DCP_CURRENT_UA;

 	rc = devm_delayed_work_autocancel(chip->dev, &chip->status_change_work,
 					  smb_status_change_work);
 	if (rc)

-- 
2.49.0