leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

media: mtk-vcodec: Support 34bits dma address for venc

Browse Source 
Use the dma_set_mask_and_coherent helper to set venc
DMA bit mask to support 34bits iova space(16GB) that
the mt8192 iommu HW support.

Whole the iova range separate to 0~4G/4G~8G/8G~12G/12G~16G,
regarding which iova range VENC actually locate, it
depends on the dma-ranges property of venc dtsi node.

Signed-off-by: Irui Wang <irui.wang@mediatek.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Irui Wang 2021-06-05 04:29:15 +02:00 committed by Mauro Carvalho Chehab
parent 5cd5760577
commit c2c3bde0e1
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c
View File

@ -361,6 +361,9 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
goto err_event_workq;
}
if (of_get_property(pdev->dev.of_node, "dma-ranges", NULL))
dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(34));
ret = video_register_device(vfd_enc, VFL_TYPE_VIDEO, 1);
if (ret) {
mtk_v4l2_err("Failed to register video device");