linux-kernel - Re: [PATCH -next] drm/bridge: lt8912b: DRM_LONTIUM

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Date:   Thu, 8 Apr 2021 15:10:49 +0800
From:   "zhangjianhua (E)" <zhangjianhua18@...wei.com>
To:     Robert Foss <robert.foss@...aro.org>
CC:     Andrzej Hajda <a.hajda@...sung.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        "Jernej Skrabec" <jernej.skrabec@...l.net>,
        David Airlie <airlied@...ux.ie>,
        "Daniel Vetter" <daniel@...ll.ch>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        <johnny.chenyi@...wei.com>, <heying24@...wei.com>
Subject: Re: [PATCH -next] drm/bridge: lt8912b: DRM_LONTIUM_LT8912B select
 GPIOLIB

Hello Robert

I am sorry that I make a mistake about the compiling error of lt8912b,

the reason is that lt8912b miss the header file <linux/gpio/consumer.h>.

Although there are many files reference gpiod_set_value_cansleep() and

devm_gpiod_get_optional(), they all include <linux/gpio/consumer.h>

and not occur the compiling error like lt8912b. I have send the second

version patch, please read.


Best regards,

Zhang Jianhua

在 2021/4/7 17:50, zhangjianhua (E) 写道:
> Thanks, I will do that.
>
> 在 2021/4/7 16:03, Robert Foss 写道:
>>> Yes, you are right, there are many files reference
>>> gpiod_set_value_cansleep() and
>>>
>>> devm_gpiod_get_optional(). How about add config dependencies for all
>>> releated
>> I think this is the way to go and roughly half of the drm bridge
>> drivers seem to need this change.
>>
>> Do you mind submitting a series of patches adding this fix for all of
>> the relevant bridge drivers?
>>
>>> configs or only add config dependencies for the top level config?
>>>
>> .