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Date: Sun, 7 Nov 2021 14:45:46 -0800 From: Randy Dunlap <rdunlap@...radead.org> To: Ansuel Smith <ansuelsmth@...il.com>, Andrew Lunn <andrew@...n.ch>, Vivien Didelot <vivien.didelot@...il.com>, Florian Fainelli <f.fainelli@...il.com>, Vladimir Oltean <olteanv@...il.com>, "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, Rob Herring <robh+dt@...nel.org>, Jonathan Corbet <corbet@....net>, Pavel Machek <pavel@....cz>, 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 Subject: Re: [RFC PATCH 3/6] leds: add function to configure offload leds On 11/7/21 9:57 AM, Ansuel Smith wrote: > diff --git a/Documentation/leds/leds-class.rst b/Documentation/leds/leds-class.rst > index ab50b58d6a21..af84cce09068 100644 > --- a/Documentation/leds/leds-class.rst > +++ b/Documentation/leds/leds-class.rst > @@ -191,6 +191,18 @@ If the second argument (enable) to the trigger_offload() method is false, any > active HW offloading must be deactivated. In this case errors are not permitted > in the trigger_offload() method. > > +The offload trigger will use the function configure_offload() provided by the driver > +that will configure the offloaded mode for the LED. > +This function pass as the first argument (offload_flags) a u32 flag, it's in the LED passes flag. It's > +driver interest how to elaborate this flags and to declare support for a particular flag although that sentence is not very clear. > +offload trigger. > +The second argument (cmd) of the configure_offload() method can be used to do various > +operation for the specific trigger. We currently support ENABLE, DISABLE and READ to operations > +enable, disable and read the state of the offload trigger for the LED driver. > +If the driver return -ENOTSUPP on configure_offload, the trigger activation will returns > +fail as the driver doesn't support that specific offload trigger or don't know doesn't know > +how to handle the provided flags. -- ~Randy
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