[PATCH 08/14] staging: media: tegra-vde: Track struct device *

[Thierry Reding <thierry.reding@gmail.com>]

From: Thierry Reding <treding@nvidia.com>

The pointer to the struct device is frequently used, so store it in
struct tegra_vde. Also, pass around a pointer to a struct tegra_vde
instead of struct device in some cases to prepare for subsequent
patches referencing additional data from that structure.

Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 drivers/staging/media/tegra-vde/tegra-vde.c | 63 ++++++++++++---------
 1 file changed, 36 insertions(+), 27 deletions(-)

diff --git a/drivers/staging/media/tegra-vde/tegra-vde.c b/drivers/staging/media/tegra-vde/tegra-vde.c
index 41cf86dc5dbd..2496a03fd158 100644
--- a/drivers/staging/media/tegra-vde/tegra-vde.c
+++ b/drivers/staging/media/tegra-vde/tegra-vde.c
@@ -71,6 +71,7 @@ struct tegra_vde_soc {
 };
 
 struct tegra_vde {
+	struct device *dev;
 	const struct tegra_vde_soc *soc;
 	void __iomem *sxe;
 	void __iomem *bsev;
@@ -644,7 +645,7 @@ static void tegra_vde_detach_and_put_dmabuf(struct dma_buf_attachment *a,
 	dma_buf_put(dmabuf);
 }
 
-static int tegra_vde_attach_dmabuf(struct device *dev,
+static int tegra_vde_attach_dmabuf(struct tegra_vde *vde,
 				   int fd,
 				   unsigned long offset,
 				   size_t min_size,
@@ -662,38 +663,40 @@ static int tegra_vde_attach_dmabuf(struct device *dev,
 
 	dmabuf = dma_buf_get(fd);
 	if (IS_ERR(dmabuf)) {
-		dev_err(dev, "Invalid dmabuf FD: %d\n", fd);
+		dev_err(vde->dev, "Invalid dmabuf FD: %d\n", fd);
 		return PTR_ERR(dmabuf);
 	}
 
 	if (dmabuf->size & (align_size - 1)) {
-		dev_err(dev, "Unaligned dmabuf 0x%zX, should be aligned to 0x%zX\n",
+		dev_err(vde->dev,
+			"Unaligned dmabuf 0x%zX, should be aligned to 0x%zX\n",
 			dmabuf->size, align_size);
 		return -EINVAL;
 	}
 
 	if ((u64)offset + min_size > dmabuf->size) {
-		dev_err(dev, "Too small dmabuf size %zu @0x%lX, should be at least %zu\n",
+		dev_err(vde->dev,
+			"Too small dmabuf size %zu @0x%lX, should be at least %zu\n",
 			dmabuf->size, offset, min_size);
 		return -EINVAL;
 	}
 
-	attachment = dma_buf_attach(dmabuf, dev);
+	attachment = dma_buf_attach(dmabuf, vde->dev);
 	if (IS_ERR(attachment)) {
-		dev_err(dev, "Failed to attach dmabuf\n");
+		dev_err(vde->dev, "Failed to attach dmabuf\n");
 		err = PTR_ERR(attachment);
 		goto err_put;
 	}
 
 	sgt = dma_buf_map_attachment(attachment, dma_dir);
 	if (IS_ERR(sgt)) {
-		dev_err(dev, "Failed to get dmabufs sg_table\n");
+		dev_err(vde->dev, "Failed to get dmabufs sg_table\n");
 		err = PTR_ERR(sgt);
 		goto err_detach;
 	}
 
 	if (sgt->nents != 1) {
-		dev_err(dev, "Sparse DMA region is unsupported\n");
+		dev_err(vde->dev, "Sparse DMA region is unsupported\n");
 		err = -EINVAL;
 		goto err_unmap;
 	}
@@ -717,7 +720,7 @@ static int tegra_vde_attach_dmabuf(struct device *dev,
 	return err;
 }
 
-static int tegra_vde_attach_dmabufs_to_frame(struct device *dev,
+static int tegra_vde_attach_dmabufs_to_frame(struct tegra_vde *vde,
 					     struct video_frame *frame,
 					     struct tegra_vde_h264_frame *src,
 					     enum dma_data_direction dma_dir,
@@ -726,7 +729,7 @@ static int tegra_vde_attach_dmabufs_to_frame(struct device *dev,
 {
 	int err;
 
-	err = tegra_vde_attach_dmabuf(dev, src->y_fd,
+	err = tegra_vde_attach_dmabuf(vde, src->y_fd,
 				      src->y_offset, lsize, SZ_256,
 				      &frame->y_dmabuf_attachment,
 				      &frame->y_addr,
@@ -735,7 +738,7 @@ static int tegra_vde_attach_dmabufs_to_frame(struct device *dev,
 	if (err)
 		return err;
 
-	err = tegra_vde_attach_dmabuf(dev, src->cb_fd,
+	err = tegra_vde_attach_dmabuf(vde, src->cb_fd,
 				      src->cb_offset, csize, SZ_256,
 				      &frame->cb_dmabuf_attachment,
 				      &frame->cb_addr,
@@ -744,7 +747,7 @@ static int tegra_vde_attach_dmabufs_to_frame(struct device *dev,
 	if (err)
 		goto err_release_y;
 
-	err = tegra_vde_attach_dmabuf(dev, src->cr_fd,
+	err = tegra_vde_attach_dmabuf(vde, src->cr_fd,
 				      src->cr_offset, csize, SZ_256,
 				      &frame->cr_dmabuf_attachment,
 				      &frame->cr_addr,
@@ -758,7 +761,7 @@ static int tegra_vde_attach_dmabufs_to_frame(struct device *dev,
 		return 0;
 	}
 
-	err = tegra_vde_attach_dmabuf(dev, src->aux_fd,
+	err = tegra_vde_attach_dmabuf(vde, src->aux_fd,
 				      src->aux_offset, csize, SZ_256,
 				      &frame->aux_dmabuf_attachment,
 				      &frame->aux_addr,
@@ -770,33 +773,35 @@ static int tegra_vde_attach_dmabufs_to_frame(struct device *dev,
 	return 0;
 
 err_release_cr:
-	tegra_vde_detach_and_put_dmabuf(frame->cr_dmabuf_attachment,
+	tegra_vde_detach_and_put_dmabuf(vde, frame->cr_dmabuf_attachment,
 					frame->cr_sgt, dma_dir);
 err_release_cb:
-	tegra_vde_detach_and_put_dmabuf(frame->cb_dmabuf_attachment,
+	tegra_vde_detach_and_put_dmabuf(vde, frame->cb_dmabuf_attachment,
 					frame->cb_sgt, dma_dir);
 err_release_y:
-	tegra_vde_detach_and_put_dmabuf(frame->y_dmabuf_attachment,
+	tegra_vde_detach_and_put_dmabuf(vde, frame->y_dmabuf_attachment,
 					frame->y_sgt, dma_dir);
 
 	return err;
 }
 
-static void tegra_vde_release_frame_dmabufs(struct video_frame *frame,
+static void tegra_vde_release_frame_dmabufs(struct tegra_vde *vde,
+					    struct video_frame *frame,
 					    enum dma_data_direction dma_dir,
 					    bool baseline_profile)
 {
 	if (!baseline_profile)
-		tegra_vde_detach_and_put_dmabuf(frame->aux_dmabuf_attachment,
+		tegra_vde_detach_and_put_dmabuf(vde,
+						frame->aux_dmabuf_attachment,
 						frame->aux_sgt, dma_dir);
 
-	tegra_vde_detach_and_put_dmabuf(frame->cr_dmabuf_attachment,
+	tegra_vde_detach_and_put_dmabuf(vde, frame->cr_dmabuf_attachment,
 					frame->cr_sgt, dma_dir);
 
-	tegra_vde_detach_and_put_dmabuf(frame->cb_dmabuf_attachment,
+	tegra_vde_detach_and_put_dmabuf(vde, frame->cb_dmabuf_attachment,
 					frame->cb_sgt, dma_dir);
 
-	tegra_vde_detach_and_put_dmabuf(frame->y_dmabuf_attachment,
+	tegra_vde_detach_and_put_dmabuf(vde, frame->y_dmabuf_attachment,
 					frame->y_sgt, dma_dir);
 }
 
@@ -937,7 +942,7 @@ static int tegra_vde_ioctl_decode_h264(struct tegra_vde *vde,
 	if (ret)
 		return ret;
 
-	ret = tegra_vde_attach_dmabuf(dev, ctx.bitstream_data_fd,
+	ret = tegra_vde_attach_dmabuf(vde, ctx.bitstream_data_fd,
 				      ctx.bitstream_data_offset,
 				      SZ_16K, SZ_16K,
 				      &bitstream_data_dmabuf_attachment,
@@ -949,7 +954,7 @@ static int tegra_vde_ioctl_decode_h264(struct tegra_vde *vde,
 		return ret;
 
 	if (vde->soc->supports_ref_pic_marking) {
-		ret = tegra_vde_attach_dmabuf(dev, ctx.secure_fd,
+		ret = tegra_vde_attach_dmabuf(vde, ctx.secure_fd,
 					      ctx.secure_offset, 0, SZ_256,
 					      &secure_attachment,
 					      &secure_addr,
@@ -992,7 +997,7 @@ static int tegra_vde_ioctl_decode_h264(struct tegra_vde *vde,
 
 		dma_dir = (i == 0) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
 
-		ret = tegra_vde_attach_dmabufs_to_frame(dev, &dpb_frames[i],
+		ret = tegra_vde_attach_dmabufs_to_frame(vde, &dpb_frames[i],
 							&frame, dma_dir,
 							ctx.baseline_profile,
 							lsize, csize);
@@ -1081,7 +1086,7 @@ static int tegra_vde_ioctl_decode_h264(struct tegra_vde *vde,
 	while (i--) {
 		dma_dir = (i == 0) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
 
-		tegra_vde_release_frame_dmabufs(&dpb_frames[i], dma_dir,
+		tegra_vde_release_frame_dmabufs(vde, &dpb_frames[i], dma_dir,
 						ctx.baseline_profile);
 	}
 
@@ -1089,10 +1094,12 @@ static int tegra_vde_ioctl_decode_h264(struct tegra_vde *vde,
 
 release_bitstream_dmabuf:
 	if (secure_attachment)
-		tegra_vde_detach_and_put_dmabuf(secure_attachment, secure_sgt,
+		tegra_vde_detach_and_put_dmabuf(vde, secure_attachment,
+						secure_sgt,
 						DMA_TO_DEVICE);
 
-	tegra_vde_detach_and_put_dmabuf(bitstream_data_dmabuf_attachment,
+	tegra_vde_detach_and_put_dmabuf(vde,
+					bitstream_data_dmabuf_attachment,
 					bitstream_sgt, DMA_TO_DEVICE);
 
 	return ret;
@@ -1190,6 +1197,8 @@ static int tegra_vde_probe(struct platform_device *pdev)
 	if (!vde)
 		return -ENOMEM;
 
+	vde->dev = &pdev->dev;
+
 	platform_set_drvdata(pdev, vde);
 
 	vde->soc = of_device_get_match_data(&pdev->dev);
-- 
2.17.0