From mboxrd@z Thu Jan  1 00:00:00 1970
From: Paul Bolle <pebolle@tiscali.nl>
Subject: Re: [PATCH v5 6/8] pinctrl: cygnus: add gpio/pinconf driver
Date: Thu, 05 Mar 2015 09:11:44 +0100
Message-ID: <1425543104.24292.185.camel@x220>
References: <1425515756-321-1-git-send-email-rjui@broadcom.com>
	 <1425515756-321-7-git-send-email-rjui@broadcom.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Return-path: <linux-gpio-owner@vger.kernel.org>
In-Reply-To: <1425515756-321-7-git-send-email-rjui@broadcom.com>
Sender: linux-gpio-owner@vger.kernel.org
To: Ray Jui <rjui@broadcom.com>
Cc: Linus Walleij <linus.walleij@linaro.org>, Alexandre Courbot <gnurou@gmail.com>, Stephen Warren <swarren@wwwdotorg.org>, Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>, Mark Rutland <mark.rutland@arm.com>, Ian Campbell <ijc+devicetree@hellion.org.uk>, Kumar Gala <galak@codeaurora.org>, Grant Likely <grant.likely@linaro.org>, Christian Daudt <bcm@fixthebug.org>, Matt Porter <mporter@linaro.org>, Florian Fainelli <f.fainelli@gmail.com>, Russell King <linux@arm.linux.org.uk>, Arnd Bergmann <arnd@arndb.de>, Scott Branden <sbranden@broadcom.com>, Dmitry Torokhov <dtor@google.com>, Anatol Pomazau <anatol@google.com>, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-gpio@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com, devicetree@vger.kernel.org
List-Id: devicetree@vger.kernel.org

On Wed, 2015-03-04 at 16:35 -0800, Ray Jui wrote:
> --- a/drivers/pinctrl/bcm/Kconfig
> +++ b/drivers/pinctrl/bcm/Kconfig
> @@ -20,6 +20,28 @@ config PINCTRL_BCM2835
>  	select PINMUX
>  	select PINCONF
>  
> +config PINCTRL_CYGNUS_GPIO
> +	bool "Broadcom Cygnus GPIO (with PINCONF) driver"

bool type.

> +	depends on OF_GPIO && ARCH_BCM_CYGNUS
> +	select GPIOLIB_IRQCHIP
> +	select PINCONF
> +	select GENERIC_PINCONF
> +	default ARCH_BCM_CYGNUS
> +	help
> +	  Say yes here to enable the Broadcom Cygnus GPIO driver.
> +
> +	  The Broadcom Cygnus SoC has 3 GPIO controllers including the ASIU
> +	  GPIO controller (ASIU), the chipCommonG GPIO controller (CCM), and
> +	  the always-ON GPIO controller (CRMU/AON). All 3 GPIO controllers are
> +	  supported by this driver.
> +
> +	  All 3 Cygnus GPIO controllers support basic PINCONF functions such
> +	  as bias pull up, pull down, and drive strength configurations, when
> +	  these pins are muxed to GPIO.
> +
> +	  Pins from the ASIU GPIO can be individually muxed to GPIO function,
> +	  through interaction with the Cygnus IOMUX controller.
> +
>  config PINCTRL_CYGNUS_MUX
>  	bool "Broadcom Cygnus IOMUX driver"
>  	depends on (ARCH_BCM_CYGNUS || COMPILE_TEST)
> diff --git a/drivers/pinctrl/bcm/Makefile b/drivers/pinctrl/bcm/Makefile
> index bb6beb6..2b2f70e 100644
> --- a/drivers/pinctrl/bcm/Makefile
> +++ b/drivers/pinctrl/bcm/Makefile
> @@ -2,4 +2,5 @@
>  
>  obj-$(CONFIG_PINCTRL_BCM281XX)		+= pinctrl-bcm281xx.o
>  obj-$(CONFIG_PINCTRL_BCM2835)		+= pinctrl-bcm2835.o
> +obj-$(CONFIG_PINCTRL_CYGNUS_GPIO)	+= pinctrl-cygnus-gpio.o

So pinctrl-cygnus-gpio. will be built-in or not built at all.

>  obj-$(CONFIG_PINCTRL_CYGNUS_MUX)	+= pinctrl-cygnus-mux.o
> diff --git a/drivers/pinctrl/bcm/pinctrl-cygnus-gpio.c b/drivers/pinctrl/bcm/pinctrl-cygnus-gpio.c
> new file mode 100644
> index 0000000..4687284
> --- /dev/null
> +++ b/drivers/pinctrl/bcm/pinctrl-cygnus-gpio.c
> @@ -0,0 +1,884 @@

[...]

> +MODULE_AUTHOR("Ray Jui <rjui@broadcom.com>");
> +MODULE_DESCRIPTION("Broadcom Cygnus GPIO Driver");
> +MODULE_LICENSE("GPL v2");

These three macros will be preprocessed away. (There's also
MODULE_DEVICE_TABLE. I don't yet know how that is handled in a
non-modular build, sorry.)


Paul Bolle