[PATCH RESEND 2/2] media: set proper max seg size for devices on Exynos SoCs

[Marek Szyprowski <m.szyprowski@samsung.com>]

All multimedia devices found on Exynos SoCs support only contiguous
buffers, so set DMA max segment size to DMA_BIT_MASK(32) to let memory
allocator to correctly create contiguous memory mappings.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
---
This patch was posted earlier as a part of
http://thread.gmane.org/gmane.linux.drivers.video-input-infrastructure/97316
thread, but applying it is really needed to get all Exynos multimedia
drivers working with IOMMU enabled.

Best regards,
Marek Szyprowski
---
 drivers/media/platform/exynos-gsc/gsc-core.c  | 1 +
 drivers/media/platform/exynos4-is/fimc-core.c | 1 +
 drivers/media/platform/exynos4-is/fimc-is.c   | 1 +
 drivers/media/platform/exynos4-is/fimc-lite.c | 1 +
 drivers/media/platform/s5p-g2d/g2d.c          | 1 +
 drivers/media/platform/s5p-jpeg/jpeg-core.c   | 1 +
 drivers/media/platform/s5p-mfc/s5p_mfc.c      | 2 ++
 drivers/media/platform/s5p-tv/mixer_video.c   | 1 +
 8 files changed, 9 insertions(+)

diff --git a/drivers/media/platform/exynos-gsc/gsc-core.c b/drivers/media/platform/exynos-gsc/gsc-core.c
index 9b9e423..4f90be4 100644
--- a/drivers/media/platform/exynos-gsc/gsc-core.c
+++ b/drivers/media/platform/exynos-gsc/gsc-core.c
@@ -1140,6 +1140,7 @@ static int gsc_probe(struct platform_device *pdev)
 		goto err_m2m;
 
 	/* Initialize continious memory allocator */
+	vb2_dma_contig_set_max_seg_size(dev, DMA_BIT_MASK(32));
 	gsc->alloc_ctx = vb2_dma_contig_init_ctx(dev);
 	if (IS_ERR(gsc->alloc_ctx)) {
 		ret = PTR_ERR(gsc->alloc_ctx);
diff --git a/drivers/media/platform/exynos4-is/fimc-core.c b/drivers/media/platform/exynos4-is/fimc-core.c
index cef2a7f..368e19b 100644
--- a/drivers/media/platform/exynos4-is/fimc-core.c
+++ b/drivers/media/platform/exynos4-is/fimc-core.c
@@ -1019,6 +1019,7 @@ static int fimc_probe(struct platform_device *pdev)
 	}
 
 	/* Initialize contiguous memory allocator */
+	vb2_dma_contig_set_max_seg_size(dev, DMA_BIT_MASK(32));
 	fimc->alloc_ctx = vb2_dma_contig_init_ctx(dev);
 	if (IS_ERR(fimc->alloc_ctx)) {
 		ret = PTR_ERR(fimc->alloc_ctx);
diff --git a/drivers/media/platform/exynos4-is/fimc-is.c b/drivers/media/platform/exynos4-is/fimc-is.c
index 979c388..3f50856 100644
--- a/drivers/media/platform/exynos4-is/fimc-is.c
+++ b/drivers/media/platform/exynos4-is/fimc-is.c
@@ -847,6 +847,7 @@ static int fimc_is_probe(struct platform_device *pdev)
 	if (ret < 0)
 		goto err_pm;
 
+	vb2_dma_contig_set_max_seg_size(dev, DMA_BIT_MASK(32));
 	is->alloc_ctx = vb2_dma_contig_init_ctx(dev);
 	if (IS_ERR(is->alloc_ctx)) {
 		ret = PTR_ERR(is->alloc_ctx);
diff --git a/drivers/media/platform/exynos4-is/fimc-lite.c b/drivers/media/platform/exynos4-is/fimc-lite.c
index dc1b929..95841c8 100644
--- a/drivers/media/platform/exynos4-is/fimc-lite.c
+++ b/drivers/media/platform/exynos4-is/fimc-lite.c
@@ -1551,6 +1551,7 @@ static int fimc_lite_probe(struct platform_device *pdev)
 			goto err_sd;
 	}
 
+	vb2_dma_contig_set_max_seg_size(dev, DMA_BIT_MASK(32));
 	fimc->alloc_ctx = vb2_dma_contig_init_ctx(dev);
 	if (IS_ERR(fimc->alloc_ctx)) {
 		ret = PTR_ERR(fimc->alloc_ctx);
diff --git a/drivers/media/platform/s5p-g2d/g2d.c b/drivers/media/platform/s5p-g2d/g2d.c
index 74bd46c..5048b68 100644
--- a/drivers/media/platform/s5p-g2d/g2d.c
+++ b/drivers/media/platform/s5p-g2d/g2d.c
@@ -681,6 +681,7 @@ static int g2d_probe(struct platform_device *pdev)
 		goto put_clk_gate;
 	}
 
+	vb2_dma_contig_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32));
 	dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
 	if (IS_ERR(dev->alloc_ctx)) {
 		ret = PTR_ERR(dev->alloc_ctx);
diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c
index c3b13a6..e535ccf 100644
--- a/drivers/media/platform/s5p-jpeg/jpeg-core.c
+++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c
@@ -2838,6 +2838,7 @@ static int s5p_jpeg_probe(struct platform_device *pdev)
 		goto device_register_rollback;
 	}
 
+	vb2_dma_contig_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32));
 	jpeg->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
 	if (IS_ERR(jpeg->alloc_ctx)) {
 		v4l2_err(&jpeg->v4l2_dev, "Failed to init memory allocator\n");
diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc.c b/drivers/media/platform/s5p-mfc/s5p_mfc.c
index 927ab49..ae0bf26 100644
--- a/drivers/media/platform/s5p-mfc/s5p_mfc.c
+++ b/drivers/media/platform/s5p-mfc/s5p_mfc.c
@@ -1164,11 +1164,13 @@ static int s5p_mfc_probe(struct platform_device *pdev)
 		}
 	}
 
+	vb2_dma_contig_set_max_seg_size(dev->mem_dev_l, DMA_BIT_MASK(32));
 	dev->alloc_ctx[0] = vb2_dma_contig_init_ctx(dev->mem_dev_l);
 	if (IS_ERR(dev->alloc_ctx[0])) {
 		ret = PTR_ERR(dev->alloc_ctx[0]);
 		goto err_res;
 	}
+	vb2_dma_contig_set_max_seg_size(dev->mem_dev_r, DMA_BIT_MASK(32));
 	dev->alloc_ctx[1] = vb2_dma_contig_init_ctx(dev->mem_dev_r);
 	if (IS_ERR(dev->alloc_ctx[1])) {
 		ret = PTR_ERR(dev->alloc_ctx[1]);
diff --git a/drivers/media/platform/s5p-tv/mixer_video.c b/drivers/media/platform/s5p-tv/mixer_video.c
index d9e7f03..17d6df7 100644
--- a/drivers/media/platform/s5p-tv/mixer_video.c
+++ b/drivers/media/platform/s5p-tv/mixer_video.c
@@ -80,6 +80,7 @@ int mxr_acquire_video(struct mxr_device *mdev,
 		goto fail;
 	}
 
+	vb2_dma_contig_set_max_seg_size(mdev->dev, DMA_BIT_MASK(32));
 	mdev->alloc_ctx = vb2_dma_contig_init_ctx(mdev->dev);
 	if (IS_ERR(mdev->alloc_ctx)) {
 		mxr_err(mdev, "could not acquire vb2 allocator\n");
-- 
1.9.2