linux-kernel - Re: [PATCH] drm/panel/raydium-rm692e5: select CONFIG_DRM_DISPLAY_DP

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Message-ID: <00e81457-9148-4ca1-8433-4b7cad0652b5@linaro.org>
Date:   Mon, 23 Oct 2023 15:25:00 +0200
From:   Neil Armstrong <neil.armstrong@...aro.org>
To:     Arnd Bergmann <arnd@...nel.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>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Luca Weiss <luca.weiss@...rphone.com>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Jessica Zhang <quic_jesszhan@...cinc.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/panel/raydium-rm692e5: select
 CONFIG_DRM_DISPLAY_DP_HELPER

Hi,

On 23/10/2023 13:55, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.de>
> 
> As with several other panel drivers, this fails to link without the DP
> helper library:
> 
> ld: drivers/gpu/drm/panel/panel-raydium-rm692e5.o: in function `rm692e5_prepare':
> panel-raydium-rm692e5.c:(.text+0x11f4): undefined reference to `drm_dsc_pps_payload_pack'
> 
> Select the same symbols that the others already use.
> 
> Fixes: 988d0ff29ecf7 ("drm/panel: Add driver for BOE RM692E5 AMOLED panel")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>   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 99e14dc212ecb..a4ac4b47777fe 100644
> --- a/drivers/gpu/drm/panel/Kconfig
> +++ b/drivers/gpu/drm/panel/Kconfig
> @@ -530,6 +530,8 @@ config DRM_PANEL_RAYDIUM_RM692E5
>   	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 Raydium RM692E5-based
>   	  display panels, such as the one found in the Fairphone 5 smartphone.

Will apply once drm-misc-next-fixes is synced with the last drm-misc-next PR for v6.7.

Neil