From: Thierry Reding <treding@xxxxxxxxxx>
Export some more of the helpers in order to allow drivers to more fine-
grainedly select which helpers to use. This gives drivers an easy way to
reuse a lot of the code in the helpers while at the same time allowing
them to provide their own implementation for other functions in struct
dma_buf_ops.
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
---
drivers/gpu/drm/drm_prime.c | 23 +++++++++++++----------
include/drm/drm_prime.h | 12 ++++++++++++
2 files changed, 25 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index 9a17725b0f7a..f9903e6b59f6 100644
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -180,9 +180,8 @@ static int drm_prime_lookup_buf_handle(struct drm_prime_file_private *prime_fpri
return -ENOENT;
}
-static int drm_gem_map_attach(struct dma_buf *dma_buf,
- struct device *target_dev,
- struct dma_buf_attachment *attach)
+int drm_gem_map_attach(struct dma_buf *dma_buf, struct device *target_dev,
+ struct dma_buf_attachment *attach)
{
struct drm_prime_attachment *prime_attach;
struct drm_gem_object *obj = dma_buf->priv;
@@ -200,9 +199,10 @@ static int drm_gem_map_attach(struct dma_buf *dma_buf,
return dev->driver->gem_prime_pin(obj);
}
+EXPORT_SYMBOL(drm_gem_map_attach);
-static void drm_gem_map_detach(struct dma_buf *dma_buf,
- struct dma_buf_attachment *attach)
+void drm_gem_map_detach(struct dma_buf *dma_buf,
+ struct dma_buf_attachment *attach)
{
struct drm_prime_attachment *prime_attach = attach->priv;
struct drm_gem_object *obj = dma_buf->priv;
@@ -228,6 +228,7 @@ static void drm_gem_map_detach(struct dma_buf *dma_buf,
kfree(prime_attach);
attach->priv = NULL;
}
+EXPORT_SYMBOL(drm_gem_map_detach);
void drm_prime_remove_buf_handle_locked(struct drm_prime_file_private *prime_fpriv,
struct dma_buf *dma_buf)
@@ -254,8 +255,8 @@ void drm_prime_remove_buf_handle_locked(struct drm_prime_file_private *prime_fpr
}
}
-static struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach,
- enum dma_data_direction dir)
+struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach,
+ enum dma_data_direction dir)
{
struct drm_prime_attachment *prime_attach = attach->priv;
struct drm_gem_object *obj = attach->dmabuf->priv;
@@ -291,13 +292,15 @@ static struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach,
return sgt;
}
+EXPORT_SYMBOL(drm_gem_map_dma_buf);
-static void drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach,
- struct sg_table *sgt,
- enum dma_data_direction dir)
+void drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach,
+ struct sg_table *sgt,
+ enum dma_data_direction dir)
{
/* nothing to be done here */
}
+EXPORT_SYMBOL(drm_gem_unmap_dma_buf);
/**
* drm_gem_dmabuf_export - dma_buf export implementation for GEM
diff --git a/include/drm/drm_prime.h b/include/drm/drm_prime.h
index 59ccab402e85..3a9706815773 100644
--- a/include/drm/drm_prime.h
+++ b/include/drm/drm_prime.h
@@ -50,8 +50,10 @@ struct drm_prime_file_private {
struct rb_root handles;
};
+enum dma_data_direction;
struct device;
+struct dma_buf_attachment;
struct dma_buf_export_info;
struct dma_buf;
@@ -59,6 +61,16 @@ struct drm_device;
struct drm_gem_object;
struct drm_file;
+int drm_gem_map_attach(struct dma_buf *dma_buf, struct device *target_dev,
+ struct dma_buf_attachment *attach);
+void drm_gem_map_detach(struct dma_buf *dma_buf,
+ struct dma_buf_attachment *attach);
+struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach,
+ enum dma_data_direction dir);
+void drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach,
+ struct sg_table *sgt,
+ enum dma_data_direction dir);
+
struct dma_buf *drm_gem_prime_export(struct drm_device *dev,
struct drm_gem_object *obj,
int flags);
--
2.15.1
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