linux-kernel - Re: [PATCH] drm/panel: Select DRM_DP_HELPER for DRM_PANEL

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Message-ID: <8ab27937391733a9027a41af17a4a8155f78d549.camel@redhat.com>
Date:   Thu, 03 Feb 2022 16:05:13 -0500
From:   Lyude Paul <lyude@...hat.com>
To:     Thomas Zimmermann <tzimmermann@...e.de>, thierry.reding@...il.com,
        sam@...nborg.org, airlied@...ux.ie, daniel@...ll.ch,
        linus.walleij@...aro.org, dianders@...omium.org, ardb@...nel.org,
        naresh.kamboju@...aro.org
Cc:     rdunlap@...radead.org, arnd@...db.de,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>
Subject: Re: [PATCH] drm/panel: Select DRM_DP_HELPER for DRM_PANEL_EDP

Reviewed-by: Lyude Paul <lyude@...hat.com>

On Thu, 2022-02-03 at 10:13 +0100, Thomas Zimmermann wrote:
> As reported in [1], DRM_PANEL_EDP depends on DRM_DP_HELPER. Select
> the option to fix the build failure. The issue has been reported
> before, when DisplayPort helpers where hidden behind the option
> CONFIG_DRM_KMS_HELPER. [2]
> 
> Signed-off-by: Thomas Zimmermann <tzimmermann@...e.de>
> Fixes: adb9d5a2cc77 ("drm/dp: Move DisplayPort helpers into separate helper
> module")
> Fixes: 5f04e7ce392d ("drm/panel-edp: Split eDP panels out of panel-simple")
> Reported-by: Naresh Kamboju <naresh.kamboju@...aro.org>
> Cc: Thomas Zimmermann <tzimmermann@...e.de>
> Cc: Lyude Paul <lyude@...hat.com>
> Cc: Daniel Vetter <daniel@...ll.ch>
> Cc: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
> Cc: Maxime Ripard <mripard@...nel.org>
> Cc: dri-devel@...ts.freedesktop.org
> ---
>  drivers/gpu/drm/panel/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
> index 434c2861bb40..0aec5a10b064 100644
> --- a/drivers/gpu/drm/panel/Kconfig
> +++ b/drivers/gpu/drm/panel/Kconfig
> @@ -106,6 +106,7 @@ config DRM_PANEL_EDP
>         depends on PM
>         select VIDEOMODE_HELPERS
>         select DRM_DP_AUX_BUS
> +       select DRM_DP_HELPER
>         help
>           DRM panel driver for dumb eDP panels that need at most a regulator
> and
>           a GPIO to be powered up. Optionally a backlight can be attached so

-- 
Cheers,
 Lyude Paul (she/her)
 Software Engineer at Red Hat