[media] vb2: add dma_dir to the alloc memop

This is needed for the next patch where the dma-sg alloc memop needs
to know the dma_dir.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Pawel Osciak <pawel@osciak.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

5 files changed, 15 insertions, 6 deletions

diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c
index 573f6fb9b40f..7aed8f22e075 100644
--- a/drivers/media/v4l2-core/videobuf2-core.c
+++ b/drivers/media/v4l2-core/videobuf2-core.c
@@ -189,6 +189,8 @@ static void __vb2_queue_cancel(struct vb2_queue *q);
 static int __vb2_buf_mem_alloc(struct vb2_buffer *vb)
 {
         struct vb2_queue *q = vb->vb2_queue;
+        enum dma_data_direction dma_dir =
+                V4L2_TYPE_IS_OUTPUT(q->type) ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
         void *mem_priv;
         int plane;
 
@@ -200,7 +202,7 @@ static int __vb2_buf_mem_alloc(struct vb2_buffer *vb)
                 unsigned long size = PAGE_ALIGN(q->plane_sizes[plane]);
 
                 mem_priv = call_ptr_memop(vb, alloc, q->alloc_ctx[plane],
-                                      size, q->gfp_flags);
+                                      size, dma_dir, q->gfp_flags);
                 if (IS_ERR_OR_NULL(mem_priv))
                         goto free;
 
diff --git a/drivers/media/v4l2-core/videobuf2-dma-contig.c b/drivers/media/v4l2-core/videobuf2-dma-contig.c
index 2bdffd383572..c4305bf3dbed 100644
--- a/drivers/media/v4l2-core/videobuf2-dma-contig.c
+++ b/drivers/media/v4l2-core/videobuf2-dma-contig.c
@@ -155,7 +155,8 @@ static void vb2_dc_put(void *buf_priv)
         kfree(buf);
 }
 
-static void *vb2_dc_alloc(void *alloc_ctx, unsigned long size, gfp_t gfp_flags)
+static void *vb2_dc_alloc(void *alloc_ctx, unsigned long size,
+                          enum dma_data_direction dma_dir, gfp_t gfp_flags)
 {
         struct vb2_dc_conf *conf = alloc_ctx;
         struct device *dev = conf->dev;
@@ -176,6 +177,7 @@ static void *vb2_dc_alloc(void *alloc_ctx, unsigned long size, gfp_t gfp_flags)
         /* Prevent the device from being released while the buffer is used */
         buf->dev = get_device(dev);
         buf->size = size;
+        buf->dma_dir = dma_dir;
 
         buf->handler.refcount = &buf->refcount;
         buf->handler.put = vb2_dc_put;
diff --git a/drivers/media/v4l2-core/videobuf2-dma-sg.c b/drivers/media/v4l2-core/videobuf2-dma-sg.c
index 6b54a14ee827..2529b831725b 100644
--- a/drivers/media/v4l2-core/videobuf2-dma-sg.c
+++ b/drivers/media/v4l2-core/videobuf2-dma-sg.c
@@ -86,7 +86,8 @@ static int vb2_dma_sg_alloc_compacted(struct vb2_dma_sg_buf *buf,
         return 0;
 }
 
-static void *vb2_dma_sg_alloc(void *alloc_ctx, unsigned long size, gfp_t gfp_flags)
+static void *vb2_dma_sg_alloc(void *alloc_ctx, unsigned long size,
+                              enum dma_data_direction dma_dir, gfp_t gfp_flags)
 {
         struct vb2_dma_sg_buf *buf;
         int ret;
@@ -97,7 +98,7 @@ static void *vb2_dma_sg_alloc(void *alloc_ctx, unsigned long size, gfp_t gfp_fla
                 return NULL;
 
         buf->vaddr = NULL;
-        buf->dma_dir = DMA_NONE;
+        buf->dma_dir = dma_dir;
         buf->offset = 0;
         buf->size = size;
         /* size is already page aligned */
diff --git a/drivers/media/v4l2-core/videobuf2-vmalloc.c b/drivers/media/v4l2-core/videobuf2-vmalloc.c
index fc1eb45a6143..bba2460961df 100644
--- a/drivers/media/v4l2-core/videobuf2-vmalloc.c
+++ b/drivers/media/v4l2-core/videobuf2-vmalloc.c
@@ -35,7 +35,8 @@ struct vb2_vmalloc_buf {
 
 static void vb2_vmalloc_put(void *buf_priv);
 
-static void *vb2_vmalloc_alloc(void *alloc_ctx, unsigned long size, gfp_t gfp_flags)
+static void *vb2_vmalloc_alloc(void *alloc_ctx, unsigned long size,
+                               enum dma_data_direction dma_dir, gfp_t gfp_flags)
 {
         struct vb2_vmalloc_buf *buf;
 
@@ -45,6 +46,7 @@ static void *vb2_vmalloc_alloc(void *alloc_ctx, unsigned long size, gfp_t gfp_fl
 
         buf->size = size;
         buf->vaddr = vmalloc_user(buf->size);
+        buf->dma_dir = dma_dir;
         buf->handler.refcount = &buf->refcount;
         buf->handler.put = vb2_vmalloc_put;
         buf->handler.arg = buf;
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index d607871749c7..bd2cec2d6c3d 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -82,7 +82,9 @@ struct vb2_threadio_data;
  *                                unmap_dmabuf.
  */
 struct vb2_mem_ops {
-        void            *(*alloc)(void *alloc_ctx, unsigned long size, gfp_t gfp_flags);
+        void            *(*alloc)(void *alloc_ctx, unsigned long size,
+                                  enum dma_data_direction dma_dir,
+                                  gfp_t gfp_flags);
         void            (*put)(void *buf_priv);
         struct dma_buf *(*get_dmabuf)(void *buf_priv, unsigned long flags);