linux-kernel - [PATCH v1 2/2] power: supply: sbs-battery: Fall back to Li-ion battery type for bq20z75

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Message-Id: <20210510220827.11595-2-digetx@gmail.com>
Date:   Tue, 11 May 2021 01:08:27 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Sebastian Reichel <sre@...nel.org>,
        Antoni Aloy Torrens <aaloytorrens@...il.com>,
        Nikola Milosavljević <mnidza@...look.com>
Cc:     linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v1 2/2] power: supply: sbs-battery: Fall back to Li-ion battery type for bq20z75

The older bq20z75 controller doesn't support reporting the battery type
and the type is Li-ion in this case.

Tested-by: Antoni Aloy Torrens <aaloytorrens@...il.com> # TF101
Tested-by: Nikola Milosavljević <mnidza@...look.com> # TF101
Signed-off-by: Dmitry Osipenko <digetx@...il.com>
---
 drivers/power/supply/sbs-battery.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/power/supply/sbs-battery.c b/drivers/power/supply/sbs-battery.c
index b71fbf543428..fec6c139d4ff 100644
--- a/drivers/power/supply/sbs-battery.c
+++ b/drivers/power/supply/sbs-battery.c
@@ -813,9 +813,17 @@ static int sbs_get_chemistry(struct i2c_client *client,
 	else
 		val->intval = POWER_SUPPLY_TECHNOLOGY_UNKNOWN;
 
-	if (val->intval == POWER_SUPPLY_TECHNOLOGY_UNKNOWN)
+	if (val->intval == POWER_SUPPLY_TECHNOLOGY_UNKNOWN) {
+		struct sbs_info *chip = i2c_get_clientdata(client);
+
 		dev_warn_once(&client->dev, "Unknown chemistry: %s\n", chemistry);
 
+		if (chip->flags & SBS_FLAGS_TI_BQ20ZX5) {
+			dev_warn_once(&client->dev, "Falling back to Li-ion\n");
+			val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
+		}
+	}
+
 	return 0;
 }
 
-- 
2.30.2