From: Csókás, Bence <csokas.bence@prolan.hu>
Date: Tue, 19 Nov 2024 18:07:38 +0000 (+0100)
Subject: power: ip5xxx_power: Fall back to Charge End bit if status register is absent
X-Git-Tag: v6.14-rc1~71^2~56
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=667e11374f4e4c85452d1a4f6f3fe0640991abd8;p=linux-block.git

power: ip5xxx_power: Fall back to Charge End bit if status register is absent

On parts where there is no status register, check the Charge End
bit to set charging/not charging status. Fullness, trickle charge
status, discharging etc. cannot be determined from just this bit.

Signed-off-by: Csókás, Bence <csokas.bence@prolan.hu>
Link: https://lore.kernel.org/r/20241119180741.2237692-6-csokas.bence@prolan.hu
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
---

diff --git a/drivers/power/supply/ip5xxx_power.c b/drivers/power/supply/ip5xxx_power.c
index 2c4d338574d7..24b437cb8793 100644
--- a/drivers/power/supply/ip5xxx_power.c
+++ b/drivers/power/supply/ip5xxx_power.c
@@ -270,6 +270,19 @@ static int ip5xxx_battery_get_status(struct ip5xxx *ip5xxx, int *val)
 	unsigned int rval;
 	int ret;
 
+	if (!ip5xxx->regs.charger.status) {
+		// Fall-back to Charging Ended bit
+		ret = ip5xxx_read(ip5xxx, ip5xxx->regs.charger.chg_end, &rval);
+		if (ret)
+			return ret;
+
+		if (rval == ip5xxx->chg_end_inverted)
+			*val = POWER_SUPPLY_STATUS_CHARGING;
+		else
+			*val = POWER_SUPPLY_STATUS_NOT_CHARGING;
+		return 0;
+	}
+
 	ret = ip5xxx_read(ip5xxx, ip5xxx->regs.charger.status, &rval);
 	if (ret)
 		return ret;