linux-kernel - Re: [PATCH] drm/mediatek: select DRM_GEM_DMA_HELPER if DRM_FBDEV

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Date: Wed, 26 Jun 2024 16:11:09 +0200
From: Thomas Zimmermann <tzimmermann@...e.de>
To: Chen-Yu Tsai <wenst@...omium.org>
Cc: Chun-Kuang Hu <chunkuang.hu@...nel.org>,
 Philipp Zabel <p.zabel@...gutronix.de>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, dri-devel@...ts.freedesktop.org,
 linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Subject: Re: [PATCH] drm/mediatek: select DRM_GEM_DMA_HELPER if
 DRM_FBDEV_EMULATION=y



Am 26.06.24 um 16:07 schrieb Thomas Zimmermann:
> Hi
>
> Am 26.06.24 um 08:37 schrieb Chen-Yu Tsai:
>> Hi Thomas,
>>
>> On Thu, Jun 20, 2024 at 10:20 PM Chun-Kuang Hu 
>> <chunkuang.hu@...nel.org> wrote:
>>> Hi, Chen-Yu:
>>>
>>> Chen-Yu Tsai <wenst@...omium.org> 於 2024年6月20日 週四 下午1:47寫道：
>>>> With the recent switch from fbdev-generic to fbdev-dma, the driver now
>>>> requires the DRM GEM DMA helpers. This dependency is missing, and will
>>>> cause a link failure if fbdev emulation is enabled.
>>>>
>>>> Add the missing dependency.
>>> Acked-by: Chun-Kuang Hu <chunkuang.hu@...iatek.com>
>> Could you help merge this?
>
> It's merged into drm-misc-fixes.

drm-misc-next

>
> Best regards
> Thomas
>
>>
>> Thanks
>> ChenYu
>>
>>>> Fixes: 0992284b4fe4 ("drm/mediatek: Use fbdev-dma")
>>>> Signed-off-by: Chen-Yu Tsai <wenst@...omium.org>
>>>> ---
>>>> The commit this patch fixes is in drm-misc-next. Ideally this patch
>>>> should be applied on top of it directly.
>>>>
>>>> CK, could you give your ack for it?
>>>>
>>>>   drivers/gpu/drm/mediatek/Kconfig | 1 +
>>>>   1 file changed, 1 insertion(+)
>>>>
>>>> diff --git a/drivers/gpu/drm/mediatek/Kconfig 
>>>> b/drivers/gpu/drm/mediatek/Kconfig
>>>> index 96cbe020f493..d6449ebae838 100644
>>>> --- a/drivers/gpu/drm/mediatek/Kconfig
>>>> +++ b/drivers/gpu/drm/mediatek/Kconfig
>>>> @@ -7,6 +7,7 @@ config DRM_MEDIATEK
>>>>          depends on HAVE_ARM_SMCCC
>>>>          depends on OF
>>>>          depends on MTK_MMSYS
>>>> +       select DRM_GEM_DMA_HELPER if DRM_FBDEV_EMULATION
>>>>          select DRM_KMS_HELPER
>>>>          select DRM_MIPI_DSI
>>>>          select DRM_PANEL
>>>> -- 
>>>> 2.45.2.741.gdbec12cfda-goog
>>>>
>

-- 
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)