Linux-GPIO Archive on lore.kernel.org
 help / color / Atom feed
From: Linus Walleij <linus.walleij@linaro.org>
To: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Cc: "open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
	<devicetree@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Bartosz Golaszewski <bgolaszewski@baylibre.com>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Subject: Re: [PATCH 3/3] gpio: syscon: Add support for the Xylon LogiCVC GPIOs
Date: Thu, 12 Sep 2019 10:17:15 +0100
Message-ID: <CACRpkdY40PZc9R-yFwooR4-WMgn3LH7K+yTx00ZNxyq6OOnw6A@mail.gmail.com> (raw)
In-Reply-To: <20190910152855.111588-3-paul.kocialkowski@bootlin.com>

On Tue, Sep 10, 2019 at 4:29 PM Paul Kocialkowski
<paul.kocialkowski@bootlin.com> wrote:

> The LogiCVC display hardware block comes with GPIO capabilities
> that must be exposed separately from the main driver (as GPIOs) for
> use with regulators and panels. A syscon is used to share the same
> regmap across the two drivers.
>
> Since the GPIO capabilities are pretty simple, add them to the syscon
> GPIO driver.
>
> Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>

I'm fine with this for now, but the gpio-syscon driver is now growing
big and when you use it you are getting support for a whole bunch
of systems you're not running on included in your binary.

We need to think about possibly creating drivers/gpio/syscon
and split subdrivers into separate files and config options
so that people can slim down to what they actually need.

> +       *bit = 1 << offset;

Please do this:

#include <linux/bits.h>

*bit = BIT(offset);

Yours,
Linus Walleij

  reply index

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-10 15:28 [PATCH 1/3] gpio: syscon: Add support for a custom get operation Paul Kocialkowski
2019-09-10 15:28 ` [PATCH 2/3] dt-bindings: gpio: Add binding document for xylon logicvc-gpio Paul Kocialkowski
2019-09-12  9:19   ` Linus Walleij
2019-09-23 13:59     ` Paul Kocialkowski
2019-09-13 14:36   ` Rob Herring
2019-09-23 14:13     ` Paul Kocialkowski
2019-09-10 15:28 ` [PATCH 3/3] gpio: syscon: Add support for the Xylon LogiCVC GPIOs Paul Kocialkowski
2019-09-12  9:17   ` Linus Walleij [this message]
2019-09-23 13:33     ` Paul Kocialkowski
2019-10-04 21:24       ` Linus Walleij
2019-09-12  9:18 ` [PATCH 1/3] gpio: syscon: Add support for a custom get operation Linus Walleij
2019-09-23 13:34   ` Paul Kocialkowski

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CACRpkdY40PZc9R-yFwooR4-WMgn3LH7K+yTx00ZNxyq6OOnw6A@mail.gmail.com \
    --to=linus.walleij@linaro.org \
    --cc=bgolaszewski@baylibre.com \
    --cc=devicetree@vger.kernel.org \
    --cc=linux-gpio@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mark.rutland@arm.com \
    --cc=paul.kocialkowski@bootlin.com \
    --cc=robh+dt@kernel.org \
    --cc=thomas.petazzoni@bootlin.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-GPIO Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-gpio/0 linux-gpio/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-gpio linux-gpio/ https://lore.kernel.org/linux-gpio \
		linux-gpio@vger.kernel.org linux-gpio@archiver.kernel.org
	public-inbox-index linux-gpio

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-gpio


AGPL code for this site: git clone https://public-inbox.org/ public-inbox