linux-kernel - Re: [PATCH 4/4] leds: lm3532: Introduce the lm3532 LED driver

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 22 Mar 2019 15:16:54 -0700
From:   Tony Lindgren <tony@...mide.com>
To:     Dan Murphy <dmurphy@...com>
Cc:     robh+dt@...nel.org, jacek.anaszewski@...il.com, pavel@....cz,
        lee.jones@...aro.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-leds@...r.kernel.org,
        Sebastian Reichel <sre@...nel.org>
Subject: Re: [PATCH 4/4] leds: lm3532: Introduce the lm3532 LED driver

Hi,

* Dan Murphy <dmurphy@...com> [190321 14:29]:
> Introduce the Texas Instruments LM3532 White LED driver.
> The driver supports ALS configurability or manual brightness
> control.
> 
> The driver also supports associating LED strings with specific
> control banks in a group or as individually controlled strings.

Thanks for getting this driver done. I need help a bit using
this though.. What's the glue to the drm driver?

I can control the backlight brightness just fine via /sys, and
backlight shows up as the trigger in /sys/class/leds/lm3532:backlight,
but /sys/class/backlight is empty and looks like drm can't find it.

Do I need to enable some additional driver(s) to get this to work
with the drm driver?

Regards,

Tony