From mboxrd@z Thu Jan  1 00:00:00 1970
From: simon.guinot@sequanux.org (Simon Guinot)
Date: Sat, 29 Dec 2012 02:07:42 +0100
Subject: [PATCH 1/5] ARM: Kirkwood: Convert NS2 to gpio-poweroff.
In-Reply-To: <1356704050-5047-1-git-send-email-andrew@lunn.ch>
References: <1356704050-5047-1-git-send-email-andrew@lunn.ch>
Message-ID: <20121229010742.GB1357@kw.sim.vm.gnt>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Fri, Dec 28, 2012 at 03:14:10PM +0100, Andrew Lunn wrote:
> Remove C code and add a Device Tree node in its place.
> 
> Signed-off-by: Andrew Lunn <andrew@lunn.ch>
> ---
> 
> This is untested. I've been known to get the active hi/low the wrong
> way around so that the board powers off as the driver loads at boot
> time. So it would be very good to have a tested-by: sign off.

Hi Andrew,

I think that GPIOs are currently broken for LaCie DT boards, due to
commit f9e75922: "ARM: Kirkwood: Make use of mvebu pincltl and gpio
drivers".

As mvbu_gpio is now used (instead of orion_gpio), pinctrl must also be
used. I think that the pinctrl conversion is a preliminary work to the
gpio_poweroff conversion. I realized this some weeks ago while working
on the exactly same patch. Unfortunately, I failed to find enough time
to fix it.

If you can afford a few days delay, let's say until the end of the next
week, I should be able to add the pinctrl conversion patch and then also
to test your patch on the top of that.

Thanks,

Simon

> 
> 
>  arch/arm/boot/dts/kirkwood-ns2-common.dtsi |    6 ++++++
>  arch/arm/mach-kirkwood/board-ns2.c         |   14 --------------
>  2 files changed, 6 insertions(+), 14 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/kirkwood-ns2-common.dtsi b/arch/arm/boot/dts/kirkwood-ns2-common.dtsi
> index 9bc6785..58c4103 100644
> --- a/arch/arm/boot/dts/kirkwood-ns2-common.dtsi
> +++ b/arch/arm/boot/dts/kirkwood-ns2-common.dtsi
> @@ -60,4 +60,10 @@
>  			gpios = <&gpio0 12 0>;
>  		};
>  	};
> +
> +	gpio_poweroff {
> +		compatible = "gpio-poweroff";
> +		gpios = <&gpio0 31 0>;
> +	};
> +
>  };
> diff --git a/arch/arm/mach-kirkwood/board-ns2.c b/arch/arm/mach-kirkwood/board-ns2.c
> index 8821720..f263449 100644
> --- a/arch/arm/mach-kirkwood/board-ns2.c
> +++ b/arch/arm/mach-kirkwood/board-ns2.c
> @@ -15,7 +15,6 @@
>  #include <linux/init.h>
>  #include <linux/platform_device.h>
>  #include <linux/mv643xx_eth.h>
> -#include <linux/gpio.h>
>  #include <linux/of.h>
>  #include "common.h"
>  #include "mpp.h"
> @@ -59,13 +58,6 @@ static unsigned int ns2_mpp_config[] __initdata = {
>  	0
>  };
>  
> -#define NS2_GPIO_POWER_OFF	31
> -
> -static void ns2_power_off(void)
> -{
> -	gpio_set_value(NS2_GPIO_POWER_OFF, 1);
> -}
> -
>  void __init ns2_init(void)
>  {
>  	/*
> @@ -77,10 +69,4 @@ void __init ns2_init(void)
>  	    of_machine_is_compatible("lacie,netspace_mini_v2"))
>  		ns2_ge00_data.phy_addr = MV643XX_ETH_PHY_ADDR(0);
>  	kirkwood_ge00_init(&ns2_ge00_data);
> -
> -	if (gpio_request(NS2_GPIO_POWER_OFF, "power-off") == 0 &&
> -	    gpio_direction_output(NS2_GPIO_POWER_OFF, 0) == 0)
> -		pm_power_off = ns2_power_off;
> -	else
> -		pr_err("ns2: failed to configure power-off GPIO\n");
>  }
> -- 
> 1.7.10.4
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