Use the dma_set_mask_and_coherent helper to set vdec 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 VDEC actually locate, it depends on the dma-ranges property of vdec dtsi node.
Signed-off-by: Yunfei Dong yunfei.dong@mediatek.com --- v8: add return value for dma_set_mask_and_coherent --- drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c index ad8d15e07e58..7154dcea795b 100644 --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c @@ -363,6 +363,14 @@ static int mtk_vcodec_probe(struct platform_device *pdev) } }
+ if (of_get_property(pdev->dev.of_node, "dma-ranges", NULL)) { + ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(34)); + if (ret) { + mtk_v4l2_err("Failed to set mask"); + goto err_core_workq; + } + } + for (i = 0; i < MTK_VDEC_HW_MAX; i++) mutex_init(&dev->dec_mutex[i]); spin_lock_init(&dev->irqlock);