linux-kernel - Re: [PATCH v6 0/5] da850-evm: add gpio-{keys,leds} for UI and BB expanders

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Message-ID: <AANLkTik78Lb0ejUiAvqbkToi=QAKSXXj_6JaBkPYw70Z@mail.gmail.com>
Date:	Fri, 10 Dec 2010 11:33:41 -0500
From:	Ben Gardiner <bengardiner@...ometrics.ca>
To:	Kevin Hilman <khilman@...prootsystems.com>
Cc:	davinci-linux-open-source@...ux.davincidsp.com,
	linux-input@...r.kernel.org,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	linux-kernel@...r.kernel.org,
	Chris Cordahi <christophercordahi@...ometrics.ca>,
	Paul Mundt <lethal@...ux-sh.org>, Sekhar Nori <nsekhar@...com>,
	Gabor Juhos <juhosg@...nwrt.org>
Subject: Re: [PATCH v6 0/5] da850-evm: add gpio-{keys,leds} for UI and BB expanders

Hi Kevin,

On Fri, Dec 10, 2010 at 11:16 AM, Kevin Hilman
<khilman@...prootsystems.com> wrote:
> Hi Ben,
>
> Ben Gardiner <bengardiner@...ometrics.ca> writes:
>
>> The da850-evm baseboard (BB) and its UI board both have tca6416 IO expanders.
>> They are bootstrapped to different I2C addresses so they can be used
>> concurrently.
>>
>> The expander on the UI board is currently used to enable/disable the
>> peripherals that are available on the UI board. In addition to this
>> functionality the expander is also connected to 8 pushbuttons. The expander
>> on the baseboard is not currently used; it is connected to deep sleep enable,
>> sw reset, a push button, some switches and LEDs.
>>
>> This proposed patch series enables the push buttons and switches on the UI and
>> BB expanders using the gpio-keys polling mode patch by Gabor Juhos. Some
>> work was performed to test irq-based gpio-keys support on the expanders (a WIP
>> patch can be posted on request) but I believe that it is not possible to use
>> irq-based gpio-keys on IO expanders for arm systems at this time.
>
> Thanks for your patience and persistence on this series, and thanks for
> working closely with the input folks to get the issues worked through.

It is my pleasure.

> This series looks good to me, so I'll be queuing it in davinci-next for
> 2.6.38.  It should show up in davinci git shortly.  Please validate
> things are working as expected there.  Were there any changes needed to
> the defaults in da8xx_omapl_defconfig to enable these features by
> default?  or does the Kconfig change in PATCH 5/5 cover it?

Thank you very much, Kevin.

I will check linux-davinci/master on monday.

Yes, the 5/5 covers the necessary Kconfig changes; it makes the polled
gpio keys default-on for da850evm.

> Also, I really appreciate the thorough patch descriptions and history
> information.   This greatly eases the work of maintainers.  Thanks!

Again, you are most welcome.

> One minor question: the series has a couple of Signed-off-by tags from
> Sekhar Nori.  The s-o-b tag is for folks on the delivery path, and based
> on what I saw, these should probably be Acked-by tags from Sekhar, since
> he certainly helped on the review/test/validate side, but AFAICT, was
> not an author or on the delivery path.  If I'm wrong on this (e.g., if
> Sekhar actually did author some of those patches) let me know, otherwise
> I'll change the s-o-b to Acked-by for Sekhar.

The s-o-b 's for Sehkar are because I folded-in suggested changes
submitted in review by Sehkar in the form of a patch. I 'think' this
qualifies as authorship. I'll leave it to your good judgement.

Best Regards,
Ben Gardiner

---
Nanometrics Inc.
http://www.nanometrics.ca
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