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Commit 4e8af293 authored by Carter Cooper's avatar Carter Cooper Committed by Gerrit - the friendly Code Review server
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msm: kgsl: Set up DMA map ops and DMA mask for KGSL 



The DMA API expects the dma_map_ops and dma_mask for the
KGSL device to be initialized. Otherwise, it falls back
to using bounce buffers.

Change-Id: I1d4b668a5f179f6c49ce8d60a76062c57e1afae2
Signed-off-by: default avatarUrvashi Agrawal <urvaagra@codeaurora.org>
Signed-off-by: default avatarKyle Piefer <kpiefer@codeaurora.org>
Signed-off-by: default avatarCarter Cooper <ccooper@codeaurora.org>
parent 8aa0accf

drivers/gpu/msm/kgsl.c

+6 −2
Original line number Diff line number Diff line
@@ -2549,6 +2549,8 @@ static int kgsl_setup_dma_buf(struct kgsl_device *device, 
		return -ENOMEM;



	attach = dma_buf_attach(dmabuf, device->dev);

	attach->dma_map_attrs |= DMA_ATTR_SKIP_CPU_SYNC;



	if (IS_ERR_OR_NULL(attach)) {

		ret = attach ? PTR_ERR(attach) : -EINVAL;

		goto out;
@@ -2557,8 +2559,6 @@ static int kgsl_setup_dma_buf(struct kgsl_device *device, 
	meta->dmabuf = dmabuf;

	meta->attach = attach;



	attach->priv = entry;



	entry->priv_data = meta;

	entry->memdesc.pagetable = pagetable;

	entry->memdesc.size = 0;
@@ -4587,6 +4587,7 @@ static void _unregister_device(struct kgsl_device *device) 


static int _register_device(struct kgsl_device *device)

{

	static u64 dma_mask = DMA_BIT_MASK(64);

	int minor, ret;

	dev_t dev;
@@ -4622,6 +4623,9 @@ static int _register_device(struct kgsl_device *device) 
		return ret;

	}



	device->dev->dma_mask = &dma_mask;

	arch_setup_dma_ops(device->dev, 0, 0, NULL, false);



	dev_set_drvdata(&device->pdev->dev, device);

	return 0;

}