linux-kernel - Re: [PATCH v2 0/6] Add support for software nodes to gpiolib

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Message-ID: <Y2wAT3LOytr9AfZt@google.com>
Date:   Wed, 9 Nov 2022 11:32:31 -0800
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        linux-acpi@...r.kernel.org, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/6] Add support for software nodes to gpiolib

On Wed, Nov 09, 2022 at 01:29:41PM +0200, Andy Shevchenko wrote:
> On Tue, Nov 08, 2022 at 04:26:45PM -0800, Dmitry Torokhov wrote:
> > This series attempts to add support for software nodes to gpiolib, using
> > software node references. This allows us to convert more drivers to the
> > generic device properties and drop support for custom platform data.
> > 
> > To describe a GPIO via software nodes we can create the following data
> > items:
> > 
> > /* Node representing the GPIO controller/GPIO bank */
> > static const struct software_node gpio_bank_b_node = {
> >         .name = "B",
> > };
> > 
> > /*
> >  * Properties that will be assigned to a software node assigned to
> >  * the device that used platform data.
> >  */
> > static const struct property_entry simone_key_enter_props[] = {
> >         PROPERTY_ENTRY_U32("linux,code", KEY_ENTER),
> >         PROPERTY_ENTRY_STRING("label", "enter"),
> >         PROPERTY_ENTRY_REF("gpios", &gpio_bank_b_node, 123, GPIO_ACTIVE_LOW),
> >         { }
> > };
> > 
> > The code in gpiolib handling software nodes uses the name in the
> > software node representing GPIO controller to locate the actual instance
> > of GPIO controller.
> 
> Thank for an update!
> 
> I have almost nothing serious except two nit-picks I think we can address:
> - dropping const qualifier for no (?) reason
> - having a superfluous check and extra dev_dbg()
> 
> If you are are going to address them, feel free to add my Rb tag to
> the patches 5 & 6.

Thank you for the reviews. I addressed most of your comments, but
because I still left the check you were concerned about in I'd like an
explicit reviewed-by on the v3 if you OK giving it.

Thank you.

-- 
Dmitry