linux-kernel - [PATCH 14/18] power: supply: bq24190_charger: Add input_current

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Date:   Sun,  6 Aug 2017 14:35:51 +0200
From:   Hans de Goede <hdegoede@...hat.com>
To:     Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        Wolfram Sang <wsa@...-dreams.de>,
        Sebastian Reichel <sre@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Cc:     Hans de Goede <hdegoede@...hat.com>,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-i2c@...r.kernel.org, Liam Breck <liam@...workimprov.net>,
        Tony Lindgren <tony@...mide.com>, linux-pm@...r.kernel.org,
        devel@...verdev.osuosl.org
Subject: [PATCH 14/18] power: supply: bq24190_charger: Add input_current_limit property

Export the input current limit of the charger as a
POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT property on the charger
power_supply class device.

Signed-off-by: Hans de Goede <hdegoede@...hat.com>
---
 drivers/power/supply/bq24190_charger.c | 35 ++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/drivers/power/supply/bq24190_charger.c b/drivers/power/supply/bq24190_charger.c
index f25ea9c4acca..d78e2c6dc127 100644
--- a/drivers/power/supply/bq24190_charger.c
+++ b/drivers/power/supply/bq24190_charger.c
@@ -982,6 +982,33 @@ static int bq24190_charger_set_voltage(struct bq24190_dev_info *bdi,
 			ARRAY_SIZE(bq24190_cvc_vreg_values), val->intval);
 }
 
+static int bq24190_charger_get_iinlimit(struct bq24190_dev_info *bdi,
+		union power_supply_propval *val)
+{
+	int iinlimit, ret;
+
+	ret = bq24190_get_field_val(bdi, BQ24190_REG_ISC,
+			BQ24190_REG_ISC_IINLIM_MASK,
+			BQ24190_REG_ISC_IINLIM_SHIFT,
+			bq24190_isc_iinlim_values,
+			ARRAY_SIZE(bq24190_isc_iinlim_values), &iinlimit);
+	if (ret < 0)
+		return ret;
+
+	val->intval = iinlimit;
+	return 0;
+}
+
+static int bq24190_charger_set_iinlimit(struct bq24190_dev_info *bdi,
+		const union power_supply_propval *val)
+{
+	return bq24190_set_field_val(bdi, BQ24190_REG_ISC,
+			BQ24190_REG_ISC_IINLIM_MASK,
+			BQ24190_REG_ISC_IINLIM_SHIFT,
+			bq24190_isc_iinlim_values,
+			ARRAY_SIZE(bq24190_isc_iinlim_values), val->intval);
+}
+
 static int bq24190_charger_get_property(struct power_supply *psy,
 		enum power_supply_property psp, union power_supply_propval *val)
 {
@@ -1022,6 +1049,9 @@ static int bq24190_charger_get_property(struct power_supply *psy,
 	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
 		ret = bq24190_charger_get_voltage_max(bdi, val);
 		break;
+	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+		ret = bq24190_charger_get_iinlimit(bdi, val);
+		break;
 	case POWER_SUPPLY_PROP_SCOPE:
 		val->intval = POWER_SUPPLY_SCOPE_SYSTEM;
 		ret = 0;
@@ -1073,6 +1103,9 @@ static int bq24190_charger_set_property(struct power_supply *psy,
 	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
 		ret = bq24190_charger_set_voltage(bdi, val);
 		break;
+	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+		ret = bq24190_charger_set_iinlimit(bdi, val);
+		break;
 	default:
 		ret = -EINVAL;
 	}
@@ -1094,6 +1127,7 @@ static int bq24190_charger_property_is_writeable(struct power_supply *psy,
 	case POWER_SUPPLY_PROP_CHARGE_TYPE:
 	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
 	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
 		ret = 1;
 		break;
 	default:
@@ -1113,6 +1147,7 @@ static enum power_supply_property bq24190_charger_properties[] = {
 	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
 	POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
 	POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
+	POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
 	POWER_SUPPLY_PROP_SCOPE,
 	POWER_SUPPLY_PROP_MODEL_NAME,
 	POWER_SUPPLY_PROP_MANUFACTURER,
-- 
2.13.3