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@xxxxxxxxxxxx>
---
drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c | 3 +++
1 file changed, 3 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 de83e3b821b4..da963cdac96b 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
@@ -376,6 +376,9 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
}
}
+ if (of_get_property(pdev->dev.of_node, "dma-ranges", NULL))
+ dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(34));
+
This function returns 0 for success, or negative number for failure: please check
the return value, or this driver may not work correctly in some corner cases.
Regards,
- Angelo
for (i = 0; i < MTK_VDEC_HW_MAX; i++)
mutex_init(&dev->dec_mutex[i]);
spin_lock_init(&dev->irqlock);
