linux-kernel - Re: [PATCH] [V2] gpio: New driver for LSI ZEVIO SoCs

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Date:	Wed, 07 Aug 2013 09:10:05 +0200
From:	Michal Simek <monstr@...str.eu>
To:	Fabian Vogt <fabian@...ter-vogt.de>
CC:	linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org, devicetree@...r.kernel.org,
	linus.walleij@...aro.org, grant.likely@...aro.org,
	pawel.moll@....com, jakob.braun96@....de
Subject: Re: [PATCH] [V2] gpio: New driver for LSI ZEVIO SoCs

Hi,

On 08/06/2013 09:53 PM, Fabian Vogt wrote:
> This driver supports the GPIO controller found in LSI ZEVIO SoCs.
> It has been successfully tested on a TI nspire CX calculator.
> ---
>  .../devicetree/bindings/gpio/gpio-zevio.txt        |  19 ++
>  drivers/gpio/Kconfig                               |   7 +
>  drivers/gpio/Makefile                              |   1 +
>  drivers/gpio/gpio-zevio.c                          | 212 +++++++++++++++++++++
>  4 files changed, 239 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/gpio/gpio-zevio.txt
>  create mode 100644 drivers/gpio/gpio-zevio.c
> 
> diff --git a/Documentation/devicetree/bindings/gpio/gpio-zevio.txt b/Documentation/devicetree/bindings/gpio/gpio-zevio.txt
> new file mode 100644
> index 0000000..96d948b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/gpio/gpio-zevio.txt
> @@ -0,0 +1,19 @@
> +Zevio GPIO controller
> +
> +Required properties:
> +- compatible = "lsi,zevio-gpio"
> +- reg = <BASEADDR SIZE>
> +- #gpio-cells = <2>
> +- gpio-controller;
> +
> +Optional:
> +- #ngpios = <32>: Number of GPIOs. Defaults to 32 if absent
> +
> +Example:
> +	gpio: gpio@...00000 {
> +		compatible = "lsi,zevio-gpio";
> +		reg = <0x90000000 0x1000>;
> +	

<tab> here and I can't see the reason to have this blank line here.

> +		gpio-controller;
> +		#gpio-cells = <2>;
> +	};
> \ No newline at end of file

Doesn't look right.

> diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
> index b2450ba..ba8c357 100644
> --- a/drivers/gpio/Kconfig
> +++ b/drivers/gpio/Kconfig
> @@ -138,6 +138,13 @@ config GPIO_EP93XX
>  	depends on ARCH_EP93XX
>  	select GPIO_GENERIC
>  
> +config GPIO_ZEVIO
> +	bool "LSI ZEVIO SoC memory mapped GPIOs"
> +	depends on ARCH_NSPIRE
> +	select GENERIC_IRQ_CHIP
> +	help
> +	  Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
> +

Not sure how subsystem maintainer handle this but I would prefer
to keep this sorted as it is done in Makefile.

>  config GPIO_MM_LANTIQ
>  	bool "Lantiq Memory mapped GPIOs"
>  	depends on LANTIQ && SOC_XWAY
> diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
> index ef3e983..1e7e926 100644
> --- a/drivers/gpio/Makefile
> +++ b/drivers/gpio/Makefile
> @@ -87,3 +87,4 @@ obj-$(CONFIG_GPIO_WM831X)	+= gpio-wm831x.o
>  obj-$(CONFIG_GPIO_WM8350)	+= gpio-wm8350.o
>  obj-$(CONFIG_GPIO_WM8994)	+= gpio-wm8994.o
>  obj-$(CONFIG_GPIO_XILINX)	+= gpio-xilinx.o
> +obj-$(CONFIG_GPIO_ZEVIO)	+= gpio-zevio.o
> \ No newline at end of file

ditto.

The patch contains several trailing whitespace reported by checkpatch.pl
which should be fixed.

Thanks,
Michal

-- 
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/
Maintainer of Linux kernel - Xilinx Zynq ARM architecture
Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform



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