linux-kernel - Re: [PATCH v4 1/3] drm/panel/lg-sw43408: select CONFIG_DRM_DISPLAY_DP

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Date: Wed, 29 May 2024 09:26:58 +0200
From: Marijn Suijten <marijn.suijten@...ainline.org>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc: Neil Armstrong <neil.armstrong@...aro.org>, 
	Jessica Zhang <quic_jesszhan@...cinc.com>, Sam Ravnborg <sam@...nborg.org>, 
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>, 
	Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>, 
	Daniel Vetter <daniel@...ll.ch>, Sumit Semwal <sumit.semwal@...aro.org>, 
	Caleb Connolly <caleb.connolly@...aro.org>, Alex Deucher <alexander.deucher@....com>, 
	Christian König <christian.koenig@....com>, Jani Nikula <jani.nikula@...ux.intel.com>, 
	Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>, Rodrigo Vivi <rodrigo.vivi@...el.com>, 
	Tvrtko Ursulin <tursulin@...ulin.net>, Rob Clark <robdclark@...il.com>, 
	Abhinav Kumar <quic_abhinavk@...cinc.com>, Sean Paul <sean@...rly.run>, Vinod Koul <vkoul@...nel.org>, 
	Caleb Connolly <caleb@...nolly.tech>, dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
	amd-gfx@...ts.freedesktop.org, intel-gfx@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org, 
	freedreno@...ts.freedesktop.org, kernel test robot <lkp@...el.com>
Subject: Re: [PATCH v4 1/3] drm/panel/lg-sw43408: select
 CONFIG_DRM_DISPLAY_DP_HELPER

On 2024-05-28 22:39:18, Dmitry Baryshkov wrote:
> This panel driver uses DSC PPS functions and as such depends on the
> DRM_DISPLAY_DP_HELPER. Select this symbol to make required functions
> available to the driver.
> 
> Reported-by: kernel test robot <lkp@...el.com>
> Closes: https://lore.kernel.org/oe-kbuild-all/202404200800.kYsRYyli-lkp@intel.com/
> Fixes: 069a6c0e94f9 ("drm: panel: Add LG sw43408 panel driver")
> Reviewed-by: Neil Armstrong <neil.armstrong@...aro.org>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

Maybe good context to mention that the DSC<->DP discrepancy will be resolved in
the future, otherwise this patch is slightly unclear for anyone who isn't aware
of the current patch series and its context.  Other than that, for the change
itself:

Reviewed-by: Marijn Suijten <marijn.suijten@...ainline.org>

> ---
>  drivers/gpu/drm/panel/Kconfig | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
> index 982324ef5a41..2ae0eb0638f3 100644
> --- a/drivers/gpu/drm/panel/Kconfig
> +++ b/drivers/gpu/drm/panel/Kconfig
> @@ -340,6 +340,8 @@ config DRM_PANEL_LG_SW43408
>  	depends on OF
>  	depends on DRM_MIPI_DSI
>  	depends on BACKLIGHT_CLASS_DEVICE
> +	select DRM_DISPLAY_DP_HELPER
> +	select DRM_DISPLAY_HELPER
>  	help
>  	  Say Y here if you want to enable support for LG sw43408 panel.
>  	  The panel has a 1080x2160@...z resolution and uses 24 bit RGB per
> 
> -- 
> 2.39.2
>