linux-kernel - [PATCH 1/2] power: supply: Add new power supply prop for date of manufacture

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Message-Id: <20200609192237.32571-1-twawrzynczak@chromium.org>
Date:   Tue,  9 Jun 2020 13:22:36 -0600
From:   Tim Wawrzynczak <twawrzynczak@...omium.org>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Sebastian Reichel <sre@...nel.org>, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Tim Wawrzynczak <twawrzynczak@...omium.org>
Subject: [PATCH 1/2] power: supply: Add new power supply prop for date of manufacture

The Smart Battery Specification v1.1 defines Manufacture Date as one of
its availabe registers. This patch adds this as a property so that
power_supply drivers can support the property and report it in syfs.

Signed-off-by: Tim Wawrzynczak <twawrzynczak@...omium.org>
Change-Id: I90bf8c67b0cd531f2155404424a98302a1c931d6
---
 drivers/power/supply/power_supply_sysfs.c | 3 ++-
 include/linux/power_supply.h              | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c
index f37ad4eae60b9..ac6d9992a8675 100644
--- a/drivers/power/supply/power_supply_sysfs.c
+++ b/drivers/power/supply/power_supply_sysfs.c
@@ -171,7 +171,7 @@ static ssize_t power_supply_show_property(struct device *dev,
 		ret = sprintf(buf, "%s\n",
 			      power_supply_scope_text[value.intval]);
 		break;
-	case POWER_SUPPLY_PROP_MODEL_NAME ... POWER_SUPPLY_PROP_SERIAL_NUMBER:
+	case POWER_SUPPLY_PROP_MODEL_NAME ... POWER_SUPPLY_PROP_MANUFACTURE_DATE:
 		ret = sprintf(buf, "%s\n", value.strval);
 		break;
 	default:
@@ -310,6 +310,7 @@ static struct device_attribute power_supply_attrs[] = {
 	POWER_SUPPLY_ATTR(model_name),
 	POWER_SUPPLY_ATTR(manufacturer),
 	POWER_SUPPLY_ATTR(serial_number),
+	POWER_SUPPLY_ATTR(manufacture_date),
 };
 
 static struct attribute *
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index 28413f737e7d0..67839bb0a46b6 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -162,6 +162,7 @@ enum power_supply_property {
 	POWER_SUPPLY_PROP_MODEL_NAME,
 	POWER_SUPPLY_PROP_MANUFACTURER,
 	POWER_SUPPLY_PROP_SERIAL_NUMBER,
+	POWER_SUPPLY_PROP_MANUFACTURE_DATE,
 };
 
 enum power_supply_type {
-- 
2.26.2