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From: Robert Marko <robert.marko@sartura.hr>
To: Michael Walle <michael@walle.cc>
Cc: Lee Jones <lee.jones@linaro.org>,
	robh+dt@kernel.org, Linus Walleij <linus.walleij@linaro.org>,
	bgolaszewski@baylibre.com, jdelvare@suse.com,
	Guenter Roeck <linux@roeck-us.net>,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-gpio@vger.kernel.org, linux-hwmon@vger.kernel.org,
	Luka Perkov <luka.perkov@sartura.hr>,
	jmp@epiphyte.org, Paul Menzel <pmenzel@molgen.mpg.de>,
	Donald Buczek <buczek@molgen.mpg.de>
Subject: Re: [PATCH 3/6] gpio: Add Delta TN48M CPLD GPIO driver
Date: Fri, 21 May 2021 15:21:06 +0200	[thread overview]
Message-ID: <CA+HBbNHikM_8sCrc9FM-z7nUXVLwjpZ=Lg7fKWGbgWGBrfciOg@mail.gmail.com> (raw)
In-Reply-To: <10b67a4dce693f013eccfd6f46ecb4c4@walle.cc>

On Thu, May 6, 2021 at 6:38 PM Michael Walle <michael@walle.cc> wrote:
>
> Am 2021-04-30 14:35, schrieb Robert Marko:
> > Delta TN48M CPLD is used as a GPIO expander for the SFP GPIOs.
> >
> > It is a mix of input only and output only pins.
> >
> > Since there is no logical GPIO numbering arbitrary one is used
> > along dt-bindings to make it humanly readable.
>
> Can gpio/gpio-regmap.c be used here? See gpio/gpio-sl28cpld.c
> for an example.

I suppose it can be used, I need to look into it more to see how could
translation to register and mask be done with it.

I have adapted the driver to work with simple I2C MFD so far.

It still leaves me with a finding the logical way to number the GPIO-s.

Robert
>
> -michael



--
Robert Marko
Staff Embedded Linux Engineer
Sartura Ltd.
Lendavska ulica 16a
10000 Zagreb, Croatia
Email: robert.marko@sartura.hr
Web: www.sartura.hr

  reply	other threads:[~2021-05-21 13:21 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-30 12:35 [PATCH 1/6] mfd: Add Delta TN48M CPLD driver Robert Marko
2021-04-30 12:35 ` [PATCH 2/6] dt-bindings: gpio: Add Delta TN48M CPLD GPIO bindings Robert Marko
2021-05-06 13:57   ` Rob Herring
2021-04-30 12:35 ` [PATCH 3/6] gpio: Add Delta TN48M CPLD GPIO driver Robert Marko
2021-05-06 14:00   ` Rob Herring
2021-05-06 16:40     ` Michael Walle
2021-05-06 17:21       ` Luka Perkov
2021-05-21 13:22       ` Robert Marko
2021-05-06 16:38   ` Michael Walle
2021-05-21 13:21     ` Robert Marko [this message]
2021-04-30 12:35 ` [PATCH 4/6] hwmon: Add Delta TN48M CPLD HWMON driver Robert Marko
2021-04-30 13:12   ` Guenter Roeck
2021-05-19 12:01     ` Robert Marko
2021-05-19 13:40       ` Guenter Roeck
2021-04-30 12:35 ` [PATCH 5/6] dt-bindings: mfd: Add Delta TN48M CPLD drivers bindings Robert Marko
2021-05-06 14:01   ` Rob Herring
2021-04-30 12:35 ` [PATCH 6/6] MAINTAINERS: Add Delta Networks TN48M CPLD drivers Robert Marko
2021-05-06 16:34 ` [PATCH 1/6] mfd: Add Delta TN48M CPLD driver Michael Walle
2021-05-19 11:53   ` Robert Marko
2021-05-19 19:42     ` Michael Walle
2021-05-20  6:49       ` Lee Jones
2021-05-21  8:19         ` Robert Marko
2021-05-21  9:03           ` Lee Jones
2021-05-21  9:06             ` Robert Marko
2021-05-06 16:50 ` kernel test robot
2021-05-19 11:11 ` Lee Jones

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