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

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Message-ID: <dc24b66c-658e-41aa-c869-42c4a7e812a8@ti.com>
Date:   Mon, 25 Mar 2019 07:35:38 -0500
From:   Dan Murphy <dmurphy@...com>
To:     Tony Lindgren <tony@...mide.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

Tony

On 3/22/19 5:16 PM, Tony Lindgren wrote:
> 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?
> 

Can you dump or point to the defconfig?

Dan

> Regards,
> 
> Tony
> 


-- 
------------------
Dan Murphy