linux-kernel - Re: [PATCH v12] gpio: add a driver for the Synopsys DesignWare APB GPIO block

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Date:	Thu, 6 Mar 2014 07:50:19 -0600
From:	Josh Cartwright <joshc@...eaurora.org>
To:	Alan Tull <delicious.quinoa@...il.com>
Cc:	Linus Walleij <linus.walleij@...aro.com>,
	linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
	linux-doc@...r.kernel.org, Jamie Iles <jamie@...ieiles.com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Grant Likely <grant.likely@...retlab.ca>,
	Mark Rutland <mark.rutland@....com>,
	Steffen Trumtrar <s.trumtrar@...gutronix.de>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	Heiko Stuebner <heiko@...ech.de>, Alan Tull <atull@...era.com>,
	Dinh Nguyen <dinguyen@...era.com>,
	Yves Vandervennet <rocket.yvanderv@...il.com>
Subject: Re: [PATCH v12] gpio: add a driver for the Synopsys DesignWare APB
 GPIO block

On Tue, Feb 25, 2014 at 05:01:01PM -0600, Alan Tull wrote:
> From: Jamie Iles <jamie@...ieiles.com>
> 
> The Synopsys DesignWare block is used in some ARM devices (picoxcell)
> and can be configured to provide multiple banks of GPIO pins.
> 
> Signed-off-by: Jamie Iles <jamie@...ieiles.com>
> Signed-off-by: Alan Tull <atull@...era.com>
> Reviewed-by: Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
[..]
> --- a/drivers/gpio/Kconfig
> +++ b/drivers/gpio/Kconfig
> @@ -128,6 +128,15 @@ config GPIO_GENERIC_PLATFORM
>  	help
>  	  Say yes here to support basic platform_device memory-mapped GPIO controllers.
>  
> +config GPIO_DWAPB
> +	tristate "Synopsys DesignWare APB GPIO driver"
> +	select GPIO_GENERIC
> +	select GENERIC_IRQ_CHIP
> +	depends on OF_GPIO && IRQ_DOMAIN
> +	help
> +	  Say Y or M here to build support for the Synopsys DesignWare APB
> +	  GPIO block.
> +

Looks like this hit next-20140306, when just doing a simple 'make defconfig', I get:

kernel/irq/Kconfig:41:error: recursive dependency detected!
kernel/irq/Kconfig:41:  symbol GENERIC_IRQ_CHIP is selected by GPIO_DWAPB
drivers/gpio/Kconfig:131:       symbol GPIO_DWAPB depends on IRQ_DOMAIN
kernel/irq/Kconfig:46:  symbol IRQ_DOMAIN is selected by GENERIC_IRQ_CHIP

Not sure the best course of action here..

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