linux-kernel - [PATCH v4 2/6] power: supply: core: Add one field to present the battery internal resistance

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Message-Id: <b70d55f008cfbbb79abf27018261d8a6f16e9673.1539587217.git.baolin.wang@linaro.org>
Date:   Mon, 15 Oct 2018 16:09:21 +0800
From:   Baolin Wang <baolin.wang@...aro.org>
To:     sre@...nel.org, robh+dt@...nel.org, mark.rutland@....com
Cc:     linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, yuanjiang.yu@...soc.com,
        baolin.wang@...aro.org, broonie@...nel.org, ctatlor97@...il.com,
        linus.walleij@...aro.org
Subject: [PATCH v4 2/6] power: supply: core: Add one field to present the battery internal resistance

Add one field for 'struct power_supply_battery_info' to present the battery
factory internal resistance.

Signed-off-by: Baolin Wang <baolin.wang@...aro.org>
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
---
Changes from v3:
 - New patch in v3, which splits code into one separate patch.
 - Add Linusw reviewed tag.
---
 drivers/power/supply/power_supply_core.c |    3 +++
 include/linux/power_supply.h             |    1 +
 2 files changed, 4 insertions(+)

diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c
index e853618..307e0995 100644
--- a/drivers/power/supply/power_supply_core.c
+++ b/drivers/power/supply/power_supply_core.c
@@ -579,6 +579,7 @@ int power_supply_get_battery_info(struct power_supply *psy,
 	info->charge_term_current_ua         = -EINVAL;
 	info->constant_charge_current_max_ua = -EINVAL;
 	info->constant_charge_voltage_max_uv = -EINVAL;
+	info->factory_internal_resistance_uohm  = -EINVAL;
 
 	if (!psy->of_node) {
 		dev_warn(&psy->dev, "%s currently only supports devicetree\n",
@@ -616,6 +617,8 @@ int power_supply_get_battery_info(struct power_supply *psy,
 			     &info->constant_charge_current_max_ua);
 	of_property_read_u32(battery_np, "constant_charge_voltage_max_microvolt",
 			     &info->constant_charge_voltage_max_uv);
+	of_property_read_u32(battery_np, "factory-internal-resistance-micro-ohms",
+			     &info->factory_internal_resistance_uohm);
 
 	return 0;
 }
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index f807691..d089566 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -326,6 +326,7 @@ struct power_supply_battery_info {
 	int charge_term_current_ua;	    /* microAmps */
 	int constant_charge_current_max_ua; /* microAmps */
 	int constant_charge_voltage_max_uv; /* microVolts */
+	int factory_internal_resistance_uohm;   /* microOhms */
 };
 
 extern struct atomic_notifier_head power_supply_notifier;
-- 
1.7.9.5