linux-kernel - [PATCH v2 3/9] power: supply: Support battery temperature device-tree properties

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Message-Id: <20200607144113.10202-4-digetx@gmail.com>
Date:   Sun,  7 Jun 2020 17:41:07 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Sebastian Reichel <sre@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        David Heidelberg <david@...t.cz>
Cc:     linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        Jonghwa Lee <jonghwa3.lee@...sung.com>,
        John Stultz <john.stultz@...aro.org>,
        Vinay Simha BN <simhavcs@...il.com>
Subject: [PATCH v2 3/9] power: supply: Support battery temperature device-tree properties

The generic battery temperature properties are already supported by the
power-supply core. Let's support parsing of the common battery temperature
properties from a device-tree.

Signed-off-by: Dmitry Osipenko <digetx@...il.com>
---
 drivers/power/supply/power_supply_core.c | 18 ++++++++++++++++++
 include/linux/power_supply.h             |  6 ++++++
 2 files changed, 24 insertions(+)

diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c
index 02b37fe6061c..8b54a5a107d7 100644
--- a/drivers/power/supply/power_supply_core.c
+++ b/drivers/power/supply/power_supply_core.c
@@ -579,6 +579,12 @@ 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->temp_ambient_alert_min         = INT_MIN;
+	info->temp_ambient_alert_max         = INT_MAX;
+	info->temp_alert_min                 = INT_MIN;
+	info->temp_alert_max                 = INT_MAX;
+	info->temp_min                       = INT_MIN;
+	info->temp_max                       = INT_MAX;
 	info->factory_internal_resistance_uohm  = -EINVAL;
 	info->resist_table = NULL;
 
@@ -638,6 +644,18 @@ int power_supply_get_battery_info(struct power_supply *psy,
 			     &info->constant_charge_voltage_max_uv);
 	of_property_read_u32(battery_np, "factory-internal-resistance-micro-ohms",
 			     &info->factory_internal_resistance_uohm);
+	of_property_read_u32(battery_np, "temperature-ambient-min-alert-celsius",
+			     &info->temp_ambient_alert_min);
+	of_property_read_u32(battery_np, "temperature-ambient-max-alert-celsius",
+			     &info->temp_ambient_alert_max);
+	of_property_read_u32(battery_np, "temperature-min-alert-celsius",
+			     &info->temp_alert_min);
+	of_property_read_u32(battery_np, "temperature-max-alert-celsius",
+			     &info->temp_alert_max);
+	of_property_read_u32(battery_np, "temperature-min-celsius",
+			     &info->temp_min);
+	of_property_read_u32(battery_np, "temperature-max-celsius",
+			     &info->temp_max);
 
 	len = of_property_count_u32_elems(battery_np, "ocv-capacity-celsius");
 	if (len < 0 && len != -EINVAL) {
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index ac1345a48ad0..31fcadd81d63 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -361,6 +361,12 @@ struct power_supply_battery_info {
 	int constant_charge_voltage_max_uv; /* microVolts */
 	int factory_internal_resistance_uohm;   /* microOhms */
 	int ocv_temp[POWER_SUPPLY_OCV_TEMP_MAX];/* celsius */
+	int temp_ambient_alert_min;             /* celsius */
+	int temp_ambient_alert_max;             /* celsius */
+	int temp_alert_min;                     /* celsius */
+	int temp_alert_max;                     /* celsius */
+	int temp_min;                           /* celsius */
+	int temp_max;                           /* celsius */
 	struct power_supply_battery_ocv_table *ocv_table[POWER_SUPPLY_OCV_TEMP_MAX];
 	int ocv_table_size[POWER_SUPPLY_OCV_TEMP_MAX];
 	struct power_supply_resistance_temp_table *resist_table;
-- 
2.26.0