linux-kernel - Re: [PATCH v3 09/11] power: supply: bq24190_charger: Get input_current

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Message-ID: <20170830144746.GG6008@atomide.com>
Date:   Wed, 30 Aug 2017 07:47:46 -0700
From:   Tony Lindgren <tony@...mide.com>
To:     Hans de Goede <hdegoede@...hat.com>
Cc:     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>,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-i2c@...r.kernel.org, Liam Breck <liam@...workimprov.net>,
        linux-pm@...r.kernel.org, devel@...verdev.osuosl.org
Subject: Re: [PATCH v3 09/11] power: supply: bq24190_charger: Get
 input_current_limit from our supplier

* Hans de Goede <hdegoede@...hat.com> [170830 02:49]:
> 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 adding
> an external_power_changed callback and calling
> power_supply_set_input_current_limit_from_supplier from this callback.
> This callback will only get called if the bq24190 has a parent-supply.
> 
> 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 <hdegoede@...hat.com>

Acked-by: Tony Lindgren <tony@...mide.com>