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Commit 87c82dcf authored by Jigarkumar Zala's avatar Jigarkumar Zala Committed by Gerrit - the friendly Code Review server
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msm: camera: smmu: Set the segment size for the context banks 



Set the right segment size in the driver for dma_map_sg to
allow for partial cache maintanence.

Change-Id: I6c439f23e957eb667bf959c830b120c0390e41b1
Signed-off-by: default avatarKarthik Anantha Ram <kartanan@codeaurora.org>
Signed-off-by: default avatarJigarkumar Zala <jzala@codeaurora.org>
parent 44abb012

drivers/cam_smmu/cam_smmu_api.c

+24 −1
Original line number Diff line number Diff line
@@ -3474,9 +3474,24 @@ static int cam_populate_smmu_context_banks(struct device *dev, 
		iommu_set_fault_handler(cb->domain,

			cam_smmu_iommu_fault_handler,

			(void *)cb->name);



	if (!dev->dma_parms)

		dev->dma_parms = devm_kzalloc(dev,

			sizeof(*dev->dma_parms), GFP_KERNEL);



	if (!dev->dma_parms) {

		CAM_WARN(CAM_SMMU,

			"Failed to allocate dma_params");

		dev->dma_parms = NULL;

		goto end;

	}



	dma_set_max_seg_size(dev, DMA_BIT_MASK(32));

	dma_set_seg_boundary(dev, DMA_BIT_MASK(64));



end:

	/* increment count to next bank */

	iommu_cb_set.cb_init_count++;



	CAM_DBG(CAM_SMMU, "X: cb init count :%d", iommu_cb_set.cb_init_count);



cb_init_fail:
@@ -3488,6 +3503,7 @@ static int cam_smmu_probe(struct platform_device *pdev) 
	int rc = 0;

	struct device *dev = &pdev->dev;



	dev->dma_parms = NULL;

	if (of_device_is_compatible(dev->of_node, "qcom,msm-cam-smmu")) {

		rc = cam_alloc_smmu_context_banks(dev);

		if (rc < 0) {
@@ -3536,8 +3552,15 @@ static int cam_smmu_probe(struct platform_device *pdev) 


static int cam_smmu_remove(struct platform_device *pdev)

{

	struct device *dev = &pdev->dev;



	/* release all the context banks and memory allocated */

	cam_smmu_reset_iommu_table(CAM_SMMU_TABLE_DEINIT);

	if (dev && dev->dma_parms) {

		devm_kfree(dev, dev->dma_parms);

		dev->dma_parms = NULL;

	}



	if (of_device_is_compatible(pdev->dev.of_node, "qcom,msm-cam-smmu"))

		cam_smmu_release_cb(pdev);

	return 0;