linux-kernel - Re: [PATCH v7 01/11] leds: add support for hardware driven LEDs

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Message-ID: <Y7O/0xkL78JJKxoJ@debian.me>
Date:   Tue, 3 Jan 2023 12:40:35 +0700
From:   Bagas Sanjaya <bagasdotme@...il.com>
To:     Christian Marangi <ansuelsmth@...il.com>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Jonathan Corbet <corbet@....net>, Pavel Machek <pavel@....cz>,
        "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>,
        John Crispin <john@...ozen.org>, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-leds@...r.kernel.org,
        Tim Harvey <tharvey@...eworks.com>,
        Alexander Stein <alexander.stein@...tq-group.com>,
        Rasmus Villemoes <rasmus.villemoes@...vas.dk>,
        Marek Behún <kabel@...nel.org>
Subject: Re: [PATCH v7 01/11] leds: add support for hardware driven LEDs

On Thu, Dec 15, 2022 at 12:54:28AM +0100, Christian Marangi wrote:
> The LED must implement 3 main API:
> - hw_control_status(): This asks the LED driver if hardware mode is
>     enabled or not.
>     Triggers will check if the offload mode is supported and will be
>     activated accordingly. If the trigger can't run in software mode,
>     return -EOPNOTSUPP as the blinking can't be simulated by software.
> - hw_control_start(): This will simply enable the hardware mode for
>     the LED.
>     With this not declared and hw_control_status() returning true,
>     it's assumed that the LED is always in hardware mode.
> - hw_control_stop(): This will simply disable the hardware mode for
>     the LED.
>     With this not declared and hw_control_status() returning true,
>     it's assumed that the LED is always in hardware mode.
>     It's advised to the driver to put the LED in the old state but this
>     is not enforcerd and putting the LED off is also accepted.
> 

Building htmldocs with Sphinx, I got:

Documentation/leds/leds-class.rst:190: WARNING: Unexpected indentation.
Documentation/leds/leds-class.rst:192: WARNING: Block quote ends without a blank line; unexpected unindent.

I have applied the fixup on the API bullet list above:

---- >8 ----

diff --git a/Documentation/leds/leds-class.rst b/Documentation/leds/leds-class.rst
index efd2f68c46a7f9..fc16b503747800 100644
--- a/Documentation/leds/leds-class.rst
+++ b/Documentation/leds/leds-class.rst
@@ -186,13 +186,15 @@ supported. By default if a LED driver doesn't declare blink_mode, SOFTWARE_CONTR
 is assumed.
 
 The LED must implement 3 main API:
+
 - hw_control_status(): This asks the LED driver if hardware mode is enabled
-    or not. Triggers will check if the hardware mode is active and will try
-    to offload their triggers if supported by the driver.
+  or not. Triggers will check if the hardware mode is active and will try
+  to offload their triggers if supported by the driver.
 - hw_control_start(): This will simply enable the hardware mode for the LED.
+
 - hw_control_stop(): This will simply disable the hardware mode for the LED.
-    It's advised to the driver to put the LED in the old state but this is not
-    enforcerd and putting the LED off is also accepted.
+  It's advised to the driver to put the LED in the old state but this is not
+  enforcerd and putting the LED off is also accepted.
 
 With HARDWARE_CONTROLLED blink_mode hw_control_status/start/stop is optional
 and any software only trigger will reject activation as the LED supports only

Thanks.

-- 
An old man doll... just what I always wanted! - Clara

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