linux-kernel - Re: [PATCH v9 5/8] gpio: Initial support for ROHM bd70528 GPIO block

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Message-ID: <20190214123806.GH12247@localhost.localdomain>
Date:   Thu, 14 Feb 2019 14:38:06 +0200
From:   Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Matti Vaittinen <mazziesaccount@...il.com>,
        Guenter Roeck <linux@...ck-us.net>,
        heikki.haikola@...rohmeurope.com, mikko.mutanen@...rohmeurope.com,
        Lee Jones <lee.jones@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Mark Brown <broonie@...nel.org>,
        Greg KH <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Sebastian Reichel <sre@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Linux PM list <linux-pm@...r.kernel.org>,
        linux-rtc@...r.kernel.org,
        LINUXWATCHDOG <linux-watchdog@...r.kernel.org>,
        bogdan-petru.chircu-mare@....com
Subject: Re: [PATCH v9 5/8] gpio: Initial support for ROHM bd70528 GPIO block

Hello Linus,

On Thu, Feb 14, 2019 at 10:29:01AM +0200, Matti Vaittinen wrote:
> Thanks a bunch Linus,
> 
> On Thu, Feb 14, 2019 at 09:00:33AM +0100, Linus Walleij wrote:
> > On Wed, Feb 13, 2019 at 2:34 PM Matti Vaittinen
> > <matti.vaittinen@...rohmeurope.com> wrote:
> > 
> > Just spotted this:
> > 
> > > +#include <linux/gpio/driver.h>
> > > +#include <linux/gpio.h>
> > 
> > A driver should only need <linux/gpio/driver.h>
> > the <linux/gpio.h> should not be used at all in new code,
> > it is a legacy header.
> 
> Allright. I'll do v10 and drop the header. Thanks for pointing this out

It seems to me the GPIOF_DIR_XXX are defined in linux/gpio.h. It would
be nice to refer to these flags when interpreting the return value
from the bd70528_get_direction (used in bd70528_gpio_get) - and actually
it might be nice to use those as a return value from bd70528_get_direction.

But I'll go with raw values for now and leave possible definition
moving/header refactoring to you who know the direction of code better :)

Br,
	Matti Vaittinen

-- 
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND

~~~ "I don't think so," said Rene Descartes.  Just then, he vanished ~~~