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>

diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index 8ff355d..6c4dd49 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -431,6 +431,7 @@ static struct drm_driver exynos_drm_driver = {
        .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,

diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c
index 6fb98f4..9f688c2 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c
@@ -503,22 +503,12 @@ out:
        }
 }
 
-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 @@ err_close_vm:
        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 @@ void exynos_drm_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
 {
        /* 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);
+}

diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.h b/drivers/gpu/drm/exynos/exynos_drm_gem.h
index 0022305..8951254 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.h
@@ -139,5 +139,7 @@ exynos_drm_gem_prime_import_sg_table(struct drm_device *dev,
                                     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