rk3568 rt init

hc

2023-11-06 e3e12f52b214121840b44c91de5b3e5af5d3eb84

 kernel/drivers/video/rockchip/mpp/mpp_iommu.c
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@@ -87,7 +87,7 @@
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 				oldest = buffer;
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 			}
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 		}
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-		if (oldest && kref_read(&oldest->ref) <= 1)
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+		if (oldest && kref_read(&oldest->ref) == 1)
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 			kref_put(&oldest->ref, mpp_dma_release_buffer);
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 		mutex_unlock(&dma->list_mutex);
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 	}
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@@ -179,7 +179,8 @@
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 	}
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 	/* remove the oldest before add buffer */
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-	mpp_dma_remove_extra_buffer(dma);
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+	if (!IS_ENABLED(CONFIG_DMABUF_CACHE))
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+		mpp_dma_remove_extra_buffer(dma);
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 	/* Check whether in dma session */
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 	buffer = mpp_dma_find_buffer_fd(dma, fd);
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@@ -233,6 +234,8 @@
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 	buffer->dma = dma;
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 	kref_init(&buffer->ref);
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+	if (!IS_ENABLED(CONFIG_DMABUF_CACHE))
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+		kref_get(&buffer->ref);
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 	mutex_lock(&dma->list_mutex);
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 	dma->buffer_count++;
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@@ -437,6 +440,8 @@
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 	info->dev = dev;
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 	info->pdev = pdev;
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 	init_rwsem(&info->rw_sem);
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+	info->irq = platform_get_irq(pdev, 0);
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+	info->got_irq = (info->irq < 0) ? false : true;
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 	return info;
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