From: Sergei Ianovich <ynvich-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Alexandre Belloni
<alexandre.belloni-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>,
Akinobu Mita
<akinobu.mita-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: rtc-linux-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Alessandro Zummo
<a.zummo-BfzFCNDTiLLj+vYz1yj4TQ@public.gmane.org>
Subject: Re: [PATCH 0/4] support control with using GPIO lines
Date: Sun, 10 Apr 2016 18:23:01 +0300 [thread overview]
Message-ID: <1460301781.17404.171.camel@gmail.com> (raw)
In-Reply-To: <20160410151237.GD5377-m++hUPXGwpdeoWH0uzbU5w@public.gmane.org>
On Sun, 2016-04-10 at 17:12 +0200, Alexandre Belloni wrote:
> Hi,
>
> On 10/04/2016 at 23:59:22 +0900, Akinobu Mita wrote :
> >
> > This series adds support access to DS1302 with GPIO lines.
> >
> > Recently rtc-ds1302 is rewritten using SPI 3wire mode. This adds
> > another platform driver using GPIO while supporting both modes.
> >
> > Thie series first fixes two problems I found while tesing, secondly
> > introduces the abstraction layer for the register access which
> > enables
> > to share the most code between spi and platform driver, and adds
> > the platform driver using GPIO.
> >
> Well, isn't spi-gpio fitting for that use case? I'd like to avoid
> open
> coding gpio bitbanging in the driver.
No, unfortunately. I've investigated this possibility for my platform.
spi-gpio doesn't support LSB-first and 3-wire options. Adding support
there is a very big change. The best way to add GPIO support is to
create spi-gpio-3wire with LSB-first support.
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next prev parent reply other threads:[~2016-04-10 15:23 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-10 14:59 [PATCH 0/4] support control with using GPIO lines Akinobu Mita
[not found] ` <1460300366-25248-1-git-send-email-akinobu.mita-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-04-10 14:59 ` [PATCH 1/4] rtc: ds1302: fix error check in set_time Akinobu Mita
[not found] ` <1460300366-25248-2-git-send-email-akinobu.mita-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-04-10 15:17 ` Alexandre Belloni
2016-04-10 14:59 ` [PATCH 2/4] rtc: ds1302: fix write value for day of week register Akinobu Mita
[not found] ` <1460300366-25248-3-git-send-email-akinobu.mita-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-04-10 15:17 ` Alexandre Belloni
2016-04-10 14:59 ` [PATCH 3/4] rtc: ds1302: add register access abstraction layer Akinobu Mita
2016-04-10 14:59 ` [PATCH 4/4] rtc: ds1302: support control with using GPIO lines Akinobu Mita
2016-04-10 15:12 ` [PATCH 0/4] " Alexandre Belloni
[not found] ` <20160410151237.GD5377-m++hUPXGwpdeoWH0uzbU5w@public.gmane.org>
2016-04-10 15:23 ` Sergei Ianovich [this message]
[not found] ` <1460301781.17404.171.camel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-04-10 15:38 ` Alexandre Belloni
[not found] ` <20160410153855.GG5377-m++hUPXGwpdeoWH0uzbU5w@public.gmane.org>
2016-04-12 1:25 ` Mark Brown
[not found] ` <20160412012518.GQ3351-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2016-04-26 19:53 ` Akinobu Mita
[not found] ` <CAC5umyguFq7vBenkJYM8AWCNJ3oGBKzKAMHHMsO=+OFHtE4b0A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-04-27 13:50 ` Mark Brown
[not found] ` <20160427135012.GP3217-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2016-04-27 14:03 ` Sergei Ianovich
[not found] ` <1461765799.2957.4.camel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-04-29 5:40 ` Akinobu Mita
[not found] ` <CAC5umyhLZ7Nvakf84qS73HG=H39mjYf5Lv=BPFnqZt-rTrZvCA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-06-26 0:55 ` Alexandre Belloni
[not found] ` <20160626005534.GY5809-m++hUPXGwpdeoWH0uzbU5w@public.gmane.org>
2016-06-27 10:23 ` Akinobu Mita
2016-04-11 19:46 ` Rob Herring
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