commit 5a0202f75803e9c366e5355de03a60d09c5d76d0
author Joonyoung Shim <jy0922.shim@samsung.com> Fri Apr 22 16:30:47 2016 +0900
committer Inki Dae <daeinki@gmail.com> Tue May 10 23:11:42 2016 +0900
tree 6eee0ebfbdcdc02f35b36c7728b95de129e2460e
parent fa9971d62a8cfc085b07b3eda1f45c236acc7d70

drm/exynos: support gem_prime_mmap

This allows exported dma-bufs to be mapped using gem_prime_mmap.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drivers/gpu/drm/exynos/exynos_drm_drv.c

diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index 8ff355d..6c4dd49 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -431,6 +431,7 @@
 	.gem_prime_import_sg_table	= exynos_drm_gem_prime_import_sg_table,
 	.gem_prime_vmap		= exynos_drm_gem_prime_vmap,
 	.gem_prime_vunmap	= exynos_drm_gem_prime_vunmap,
+	.gem_prime_mmap		= exynos_drm_gem_prime_mmap,
 	.ioctls			= exynos_ioctls,
 	.num_ioctls		= ARRAY_SIZE(exynos_ioctls),
 	.fops			= &exynos_drm_driver_fops,

drivers/gpu/drm/exynos/exynos_drm_gem.c

diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c
index 6fb98f4..9f688c2 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c
@@ -503,22 +503,12 @@
 	}
 }
 
-int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
+static int exynos_drm_gem_mmap_obj(struct drm_gem_object *obj,
+				   struct vm_area_struct *vma)
 {
-	struct exynos_drm_gem *exynos_gem;
-	struct drm_gem_object *obj;
+	struct exynos_drm_gem *exynos_gem = to_exynos_gem(obj);
 	int ret;
 
-	/* set vm_area_struct. */
-	ret = drm_gem_mmap(filp, vma);
-	if (ret < 0) {
-		DRM_ERROR("failed to mmap.\n");
-		return ret;
-	}
-
-	obj = vma->vm_private_data;
-	exynos_gem = to_exynos_gem(obj);
-
 	DRM_DEBUG_KMS("flags = 0x%x\n", exynos_gem->flags);
 
 	/* non-cachable as default. */
@@ -543,6 +533,23 @@
 	return ret;
 }
 
+int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
+{
+	struct drm_gem_object *obj;
+	int ret;
+
+	/* set vm_area_struct. */
+	ret = drm_gem_mmap(filp, vma);
+	if (ret < 0) {
+		DRM_ERROR("failed to mmap.\n");
+		return ret;
+	}
+
+	obj = vma->vm_private_data;
+
+	return exynos_drm_gem_mmap_obj(obj, vma);
+}
+
 /* low-level interface prime helpers */
 struct sg_table *exynos_drm_gem_prime_get_sg_table(struct drm_gem_object *obj)
 {
@@ -617,3 +624,15 @@
 {
 	/* Nothing to do */
 }
+
+int exynos_drm_gem_prime_mmap(struct drm_gem_object *obj,
+			      struct vm_area_struct *vma)
+{
+	int ret;
+
+	ret = drm_gem_mmap_obj(obj, obj->size, vma);
+	if (ret < 0)
+		return ret;
+
+	return exynos_drm_gem_mmap_obj(obj, vma);
+}

drivers/gpu/drm/exynos/exynos_drm_gem.h

diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.h b/drivers/gpu/drm/exynos/exynos_drm_gem.h
index 0022305..8951254 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.h
@@ -139,5 +139,7 @@
 				     struct sg_table *sgt);
 void *exynos_drm_gem_prime_vmap(struct drm_gem_object *obj);
 void exynos_drm_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
+int exynos_drm_gem_prime_mmap(struct drm_gem_object *obj,
+			      struct vm_area_struct *vma);
 
 #endif