From: Kevin Hilman <khilman@deeprootsystems.com>
To: "Nori\, Sekhar" <nsekhar@ti.com>
Cc: Ben Gardiner <bengardiner@nanometrics.ca>,
"davinci-linux-open-source\@linux.davincidsp.com"
<davinci-linux-open-source@linux.davincidsp.com>,
"linux-input\@vger.kernel.org" <linux-input@vger.kernel.org>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>, "Govindarajan\,
Sriramakrishnan" <srk@ti.com>, Paul Mundt <lethal@linux-sh.org>,
"linux-kernel\@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Alexander Clouter <alex@digriz.org.uk>,
Chris Cordahi <christophercordahi@nanometrics.ca>
Subject: Re: [PATCH v2 2/4] da850-evm: add UI Expander pushbuttons
Date: Tue, 23 Nov 2010 07:48:21 -0800 [thread overview]
Message-ID: <8739qshwhm.fsf@deeprootsystems.com> (raw)
In-Reply-To: <B85A65D85D7EB246BE421B3FB0FBB5930247931247@dbde02.ent.ti.com> (Sekhar Nori's message of "Tue, 23 Nov 2010 18:08:22 +0530")
"Nori, Sekhar" <nsekhar@ti.com> writes:
> Hi Ben,
>
> On Mon, Nov 22, 2010 at 19:20:48, Ben Gardiner wrote:
>> On Mon, Nov 22, 2010 at 6:49 AM, Nori, Sekhar <nsekhar@ti.com> wrote:
>> > On Fri, Nov 19, 2010 at 21:08:10, Ben Gardiner wrote:
>> >> [...]
>> >> By setting INPUT_POLLDEV default for the da850-evm users will get
>> >> functioning pushbuttons and switches with the default config but they
>> >> will be able to disable INPUT_POLLDEV or gpio-keys drivers in their
>> >> defconfig at their convenience.
>> >
>> > I guess we could also just modify the defconfig to switch on
>> > INPUT_POLLDEV? Since only gpio-keys functionality is affected
>> > by not enabling the correct options in kernel, it should be OK.
>>
>> Yes -- only gpio-keys is affected but enabling the option does
>> introduce an additional .o file:
>>
>> drivers/input/Makefile:obj-$(CONFIG_INPUT_POLLDEV) += input-polldev.o
>>
>> I agree that in its current state a user couls inadvertently disable
>> the gpio-keys support on da850-evm simply by disabling INPUT_POLLDEV
>> -- which is less than Ideal. How about I replace the current changes
>> to arch/arm/mach-davinci/Kconfig with:
>>
>> config KEYBOARD_GPIO
>> default MACH_DAVINCI_DA850_EVM
>> select INPUT_POLLDEV
>>
>> So 1) gpio-keys functionality is default for the da850evm and 2)
>> whenever gpio-keys is enabled so is INPUT_POLLDEV.
>
> This looks better than what was posted earlier, but I am not
> sure if platforms should influence driver configuration this
> way.
Agreed. In general, we should not have machine/platform specific
conditionals in generic Kconfigs. Generally, this should be handled in
machine/platform specific Kconfigs.
Kevin
> I guess I am just afraid that this makes a precedent for
> many driver config symbols to get replicated in the platform
> Kconfig files.
>
> Lets see if others have an opinion on this.
>
> Thanks,
> Sekhar
next prev parent reply other threads:[~2010-11-23 15:48 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1289835508.git.bengardiner@nanometrics.ca>
2010-11-16 19:39 ` [PATCH v2 0/4] da850-evm: add gpio-{keys,leds} for UI and BB expanders Ben Gardiner
2010-11-16 19:39 ` [PATCH v2 1/4] input: gpio_keys: polling mode support Ben Gardiner
2010-11-16 19:39 ` [PATCH v2 2/4] da850-evm: add UI Expander pushbuttons Ben Gardiner
2010-11-19 9:58 ` Nori, Sekhar
2010-11-19 15:38 ` Ben Gardiner
2010-11-22 11:49 ` Nori, Sekhar
2010-11-22 13:50 ` Ben Gardiner
2010-11-23 12:38 ` Nori, Sekhar
2010-11-23 13:29 ` Ben Gardiner
2010-11-23 15:48 ` Kevin Hilman [this message]
2010-11-23 17:58 ` Ben Gardiner
2010-11-24 6:09 ` Paul Mundt
2010-11-24 17:17 ` Ben Gardiner
2010-11-16 19:39 ` [PATCH v2 3/4] da850-evm: extract defines for SEL{A,B,C} pins in UI expander Ben Gardiner
2010-11-19 11:19 ` [PATCH v2 3/4] da850-evm: extract defines for SEL{A, B, C} " Nori, Sekhar
2010-11-19 15:38 ` Ben Gardiner
2010-11-16 19:39 ` [PATCH v2 4/4] da850-evm: add baseboard UI expander buttons, switches and LEDs Ben Gardiner
2010-11-19 12:14 ` Nori, Sekhar
2010-11-19 15:40 ` Ben Gardiner
2010-11-19 17:02 ` Dmitry Torokhov
2010-11-19 17:15 ` Ben Gardiner
2010-11-22 12:00 ` Nori, Sekhar
2010-11-22 14:15 ` Ben Gardiner
2010-11-23 12:42 ` Nori, Sekhar
2010-11-23 13:32 ` Ben Gardiner
2010-11-19 21:37 ` [PATCH v3 0/4] da850-evm: add gpio-{keys,leds} for UI and BB expanders Ben Gardiner
2010-11-19 21:37 ` [PATCH v3 1/4] input: gpio_keys: polling mode support Ben Gardiner
2010-11-19 21:37 ` [PATCH v3 2/4] da850-evm: add UI Expander pushbuttons Ben Gardiner
2010-11-19 21:37 ` [PATCH v3 3/4] da850-evm: extract defines for SEL{A,B,C} pins in UI expander Ben Gardiner
2010-11-19 21:41 ` [PATCH v3 3/4] da850-evm: extract defines for SEL{A, B, C} " Victor Rodriguez
2010-11-19 22:25 ` Ben Gardiner
2010-11-19 21:37 ` [PATCH v3 4/4] da850-evm: add baseboard GPIO expander buttons, switches and LEDs Ben Gardiner
2010-11-23 19:40 ` [PATCH v4 0/5] da850-evm: add gpio-{keys,leds} for UI and BB expanders Ben Gardiner
2010-11-23 19:40 ` [PATCH v4 1/5] input: gpio_keys: polling mode support Ben Gardiner
2010-11-23 19:40 ` [PATCH v4 2/5] da850-evm: add UI Expander pushbuttons Ben Gardiner
2010-11-24 13:16 ` Nori, Sekhar
2010-11-24 17:16 ` Ben Gardiner
2010-11-23 19:40 ` [PATCH v4 3/5] da850-evm: extract defines for SEL{A,B,C} pins in UI expander Ben Gardiner
2010-11-23 19:40 ` [PATCH v4 4/5] da850-evm: add baseboard GPIO expander buttons, switches and LEDs Ben Gardiner
2010-11-23 19:41 ` [PATCH v4 5/5] da850-evm: KEYBOARD_GPIO and INPUT_POLLDEV Kconfig conditionals Ben Gardiner
2010-11-24 21:59 ` [PATCH v5 0/5] da850-evm: add gpio-{keys,leds} for UI and BB expanders Ben Gardiner
2010-11-24 21:59 ` [PATCH v5 1/5] [WIP] input: add input driver for polled GPIO buttons Ben Gardiner
2010-11-24 21:59 ` [PATCH v5 2/5] da850-evm: add UI Expander pushbuttons Ben Gardiner
2010-11-24 21:59 ` [PATCH v5 3/5] da850-evm: extract defines for SEL{A,B,C} pins in UI expander Ben Gardiner
2010-11-24 21:59 ` [PATCH v5 4/5] da850-evm: add baseboard GPIO expander buttons, switches and LEDs Ben Gardiner
2010-11-24 21:59 ` [PATCH v5 5/5] da850-evm: KEYBOARD_GPIO_POLLED Kconfig conditional Ben Gardiner
2010-12-09 21:51 ` [PATCH v6 0/5] da850-evm: add gpio-{keys,leds} for UI and BB expanders Ben Gardiner
2010-12-09 21:51 ` [PATCH v6 1/5] Input: add input driver for polled GPIO buttons Ben Gardiner
2010-12-10 15:50 ` Kevin Hilman
2010-12-09 21:51 ` [PATCH v6 2/5] da850-evm: add UI Expander pushbuttons Ben Gardiner
2010-12-09 21:51 ` [PATCH v6 3/5] da850-evm: extract defines for SEL{A,B,C} pins in UI expander Ben Gardiner
2010-12-09 21:51 ` [PATCH v6 4/5] da850-evm: add baseboard GPIO expander buttons, switches and LEDs Ben Gardiner
2010-12-09 21:51 ` [PATCH v6 5/5] da850-evm: KEYBOARD_GPIO_POLLED Kconfig conditional Ben Gardiner
2010-12-10 16:16 ` [PATCH v6 0/5] da850-evm: add gpio-{keys,leds} for UI and BB expanders Kevin Hilman
2010-12-10 16:33 ` Ben Gardiner
2010-12-11 0:04 ` Kevin Hilman
2010-12-13 17:02 ` Ben Gardiner
2010-12-13 21:53 ` Kevin Hilman
2010-12-14 4:31 ` Ben Gardiner
2010-12-14 16:17 ` Ben Gardiner
2010-12-14 17:10 ` Kevin Hilman
2010-12-17 15:15 ` Ben Gardiner
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