linux-kernel - Re: [PATCH v5] leds: documentation: 'ide-disk' to 'disk-activity'

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Message-id: <576CD823.1080906@samsung.com>
Date:	Fri, 24 Jun 2016 08:50:11 +0200
From:	Jacek Anaszewski <j.anaszewski@...sung.com>
To:	Stephan Linz <linz@...pro.net>
Cc:	linux-leds@...r.kernel.org, linux-ide@...r.kernel.org,
	Joseph Jezak <josejx@...too.org>,
	Jörg Sommer <joerg@...a.gnuu.de>,
	Mark Rutland <mark.rutland@....com>,
	Richard Purdie <rpurdie@...ys.net>,
	Rob Herring <robh+dt@...nel.org>,
	Jonathan Corbet <corbet@....net>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org
Subject: Re: [PATCH v5] leds: documentation: 'ide-disk' to 'disk-activity'

Hi Stephan,

On 06/23/2016 09:38 PM, Stephan Linz wrote:
> Cc: Joseph Jezak <josejx@...too.org>
> Cc: Jörg Sommer <joerg@...a.gnuu.de>
> Cc: Mark Rutland <mark.rutland@....com>
> Signed-off-by: Stephan Linz <linz@...pro.net>
> Acked-by: Rob Herring <robh@...nel.org>
> Signed-off-by: Jacek Anaszewski <j.anaszewski@...sung.com>
> ---
> Changes in v5:
>    - Keep documentation for the old 'ide-disk' device tree
>      binding, but mark as deprecated and refer to the new
>      trigger 'disk-activity'.
>
> Changes in v4:
>    - Keep the 'ide-disk' trigger and add a second one
>      for 'disk-activity'.
>
> Changes in v3:
>    - Port to kernel 4.x
>    - Split into platform independent and dependent parts.
>
> v2: https://patchwork.ozlabs.org/patch/117485/
> v1: http://dev.gentoo.org/~josejx/ata.patch
> ---
>   Documentation/devicetree/bindings/leds/common.txt    | 5 ++++-
>   Documentation/devicetree/bindings/leds/leds-gpio.txt | 4 ++--
>   Documentation/laptops/asus-laptop.txt                | 2 +-
>   Documentation/leds/leds-class.txt                    | 2 +-
>   4 files changed, 8 insertions(+), 5 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/leds/common.txt b/Documentation/devicetree/bindings/leds/common.txt
> index af10678..1c32e31 100644
> --- a/Documentation/devicetree/bindings/leds/common.txt
> +++ b/Documentation/devicetree/bindings/leds/common.txt
> @@ -25,8 +25,11 @@ Optional properties for child nodes:
>   		   system
>        "default-on" - LED will turn on (but for leds-gpio see "default-state"
>   		    property in Documentation/devicetree/bindings/gpio/led.txt)
> +     "disk-activity" - LED indicates disk activity, the old name "ide-disk" is
> +                       still valid for backward compatibility
>        "heartbeat" - LED "double" flashes at a load average based rate
> -     "ide-disk" - LED indicates disk activity
> +     "ide-disk" - LED indicates IDE disk activity (deprecated), do not use for
> +                  new implementation, use the new "disk-activity" name instead

I'd like to reorganize this change.

I think that the two affected properties should be placed next to
each other. I'd also remove the remark about ide-disk at disk-activity,
since we're leaving ide-disk, with added reference to disk-activity.

How about following:

+     "disk-activity" - LED indicates disk activity
-     "ide-disk" - LED indicates disk activity
+     "ide-disk" - LED indicates IDE disk activity (deprecated),
                    in new implementations use "disk-activity"

>        "timer" - LED flashes at a fixed, configurable rate
>
>   - led-max-microamp : Maximum LED supply current in microamperes. This property
> diff --git a/Documentation/devicetree/bindings/leds/leds-gpio.txt b/Documentation/devicetree/bindings/leds/leds-gpio.txt
> index cbbeb18..5b1b43a 100644
> --- a/Documentation/devicetree/bindings/leds/leds-gpio.txt
> +++ b/Documentation/devicetree/bindings/leds/leds-gpio.txt
> @@ -33,9 +33,9 @@ Examples:
>   leds {
>   	compatible = "gpio-leds";
>   	hdd {
> -		label = "IDE Activity";
> +		label = "Disk Activity";
>   		gpios = <&mcu_pio 0 GPIO_ACTIVE_LOW>;
> -		linux,default-trigger = "ide-disk";
> +		linux,default-trigger = "disk-activity";
>   	};
>
>   	fault {
> diff --git a/Documentation/laptops/asus-laptop.txt b/Documentation/laptops/asus-laptop.txt
> index 79a1bc6..5f28587 100644
> --- a/Documentation/laptops/asus-laptop.txt
> +++ b/Documentation/laptops/asus-laptop.txt
> @@ -72,7 +72,7 @@ LEDs
>       echo 1 >  /sys/class/leds/asus::mail/brightness
>     will switch the mail LED on.
>     You can also know if they are on/off by reading their content and use
> -  kernel triggers like ide-disk or heartbeat.
> +  kernel triggers like disk-activity or heartbeat.
>
>   Backlight
>   ---------
> diff --git a/Documentation/leds/leds-class.txt b/Documentation/leds/leds-class.txt
> index 44f5e6b..f1f7ec9 100644
> --- a/Documentation/leds/leds-class.txt
> +++ b/Documentation/leds/leds-class.txt
> @@ -11,7 +11,7 @@ brightness support so will just be turned on for non-zero brightness settings.
>   The class also introduces the optional concept of an LED trigger. A trigger
>   is a kernel based source of led events. Triggers can either be simple or
>   complex. A simple trigger isn't configurable and is designed to slot into
> -existing subsystems with minimal additional code. Examples are the ide-disk,
> +existing subsystems with minimal additional code. Examples are the disk-activity,
>   nand-disk and sharpsl-charge triggers. With led triggers disabled, the code
>   optimises away.
>
>


-- 
Best regards,
Jacek Anaszewski