Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752059AbdHFMgs (ORCPT ); Sun, 6 Aug 2017 08:36:48 -0400 Received: from mx1.redhat.com ([209.132.183.28]:49738 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751919AbdHFMgo (ORCPT ); Sun, 6 Aug 2017 08:36:44 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 44EE680F97 Authentication-Results: ext-mx03.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx03.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=hdegoede@redhat.com From: Hans de Goede To: Darren Hart , Andy Shevchenko , Wolfram Sang , Sebastian Reichel , Greg Kroah-Hartman , Guenter Roeck , Heikki Krogerus Cc: Hans de Goede , platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, Liam Breck , Tony Lindgren , linux-pm@vger.kernel.org, devel@driverdev.osuosl.org Subject: [PATCH 15/18] power: supply: bq24190_charger: Get input_current_limit from our supplier Date: Sun, 6 Aug 2017 14:35:52 +0200 Message-Id: <20170806123555.5124-16-hdegoede@redhat.com> In-Reply-To: <20170806123555.5124-1-hdegoede@redhat.com> References: <20170806123555.5124-1-hdegoede@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Sun, 06 Aug 2017 12:36:44 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2620 Lines: 69 On some devices the USB Type-C port power (USB PD 2.0) negotiation is done by a separate port-controller IC, while the current limit is controlled through another (charger) IC. It has been decided to model this by modelling the external Type-C power brick (adapter/charger) as a power-supply class device which supplies the charger-IC, with its voltage-now and current-max representing the negotiated voltage and max current draw. This commit adds support for this to the bq24190_charger driver by calling power_supply_set_input_current_limit_from_supplier helper if the "input-current-limit-from-supplier" device-property is set. Note this replaces the functionality to get the current-limit from an extcon device, which will be removed in a follow-up commit. Signed-off-by: Hans de Goede --- drivers/power/supply/bq24190_charger.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/power/supply/bq24190_charger.c b/drivers/power/supply/bq24190_charger.c index d78e2c6dc127..1f6424f0772f 100644 --- a/drivers/power/supply/bq24190_charger.c +++ b/drivers/power/supply/bq24190_charger.c @@ -161,6 +161,7 @@ struct bq24190_dev_info { char model_name[I2C_NAME_SIZE]; bool initialized; bool irq_event; + bool input_current_limit_from_supplier; struct mutex f_reg_lock; u8 f_reg; u8 ss_reg; @@ -1137,6 +1138,14 @@ static int bq24190_charger_property_is_writeable(struct power_supply *psy, return ret; } +static void bq24190_charger_external_power_changed(struct power_supply *psy) +{ + struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy); + + if (bdi->input_current_limit_from_supplier) + power_supply_set_input_current_limit_from_supplier(psy); +} + static enum power_supply_property bq24190_charger_properties[] = { POWER_SUPPLY_PROP_CHARGE_TYPE, POWER_SUPPLY_PROP_HEALTH, @@ -1165,6 +1174,7 @@ static const struct power_supply_desc bq24190_charger_desc = { .get_property = bq24190_charger_get_property, .set_property = bq24190_charger_set_property, .property_is_writeable = bq24190_charger_property_is_writeable, + .external_power_changed = bq24190_charger_external_power_changed, }; /* Battery power supply property routines */ @@ -1654,6 +1664,10 @@ static int bq24190_probe(struct i2c_client *client, return -EINVAL; } + bdi->input_current_limit_from_supplier = + device_property_read_bool(dev, + "input-current-limit-from-supplier"); + /* * Devicetree platforms should get extcon via phandle (not yet supported). * On ACPI platforms, extcon clients may invoke us with: -- 2.13.3