drm/exynos: changed buffer structure.

the purpose of this patch is to consider IOMMU support in the future.
EXYNOS4 SoC supports IOMMU also so the address for DMA could be
physical address with IOMMU or device address with IOMMU.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

1 files changed, 24 insertions, 24 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_fb.c b/drivers/gpu/drm/exynos/exynos_drm_fb.c
index 8d0f6622404..5bf4a1ac7f8 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fb.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fb.c
@@ -43,14 +43,14 @@
  *
  * @fb: drm framebuffer obejct.
  * @exynos_gem_obj: exynos specific gem object containing a gem object.
- * @entry: pointer to exynos drm buffer entry object.
- *	- containing only the information to physically continuous memory
- *	region allocated at default framebuffer creation.
+ * @buffer: pointer to exynos_drm_gem_buffer object.
+ *	- contain the memory information to memory region allocated
+ *	at default framebuffer creation.
  */
 struct exynos_drm_fb {
 	struct drm_framebuffer		fb;
 	struct exynos_drm_gem_obj	*exynos_gem_obj;
-	struct exynos_drm_buf_entry	*entry;
+	struct exynos_drm_gem_buf	*buffer;
 };
 
 static void exynos_drm_fb_destroy(struct drm_framebuffer *fb)
@@ -65,8 +65,8 @@ static void exynos_drm_fb_destroy(struct drm_framebuffer *fb)
 	 * default framebuffer has no gem object so
 	 * a buffer of the default framebuffer should be released at here.
 	 */
-	if (!exynos_fb->exynos_gem_obj && exynos_fb->entry)
-		exynos_drm_buf_destroy(fb->dev, exynos_fb->entry);
+	if (!exynos_fb->exynos_gem_obj && exynos_fb->buffer)
+		exynos_drm_buf_destroy(fb->dev, exynos_fb->buffer);
 
 	kfree(exynos_fb);
 	exynos_fb = NULL;
@@ -145,23 +145,23 @@ exynos_drm_fb_init(struct drm_file *file_priv, struct drm_device *dev,
 	 */
 	if (!mode_cmd->handle) {
 		if (!file_priv) {
-			struct exynos_drm_buf_entry *entry;
+			struct exynos_drm_gem_buf *buffer;
 
 			/*
 			 * in case that file_priv is NULL, it allocates
 			 * only buffer and this buffer would be used
 			 * for default framebuffer.
 			 */
-			entry = exynos_drm_buf_create(dev, size);
-			if (IS_ERR(entry)) {
-				ret = PTR_ERR(entry);
+			buffer = exynos_drm_buf_create(dev, size);
+			if (IS_ERR(buffer)) {
+				ret = PTR_ERR(buffer);
 				goto err_buffer;
 			}
 
-			exynos_fb->entry = entry;
+			exynos_fb->buffer = buffer;
 
-			DRM_LOG_KMS("default fb: paddr = 0x%lx, size = 0x%x\n",
-					(unsigned long)entry->paddr, size);
+			DRM_LOG_KMS("default: dma_addr = 0x%lx, size = 0x%x\n",
+					(unsigned long)buffer->dma_addr, size);
 
 			goto out;
 		} else {
@@ -191,10 +191,10 @@ exynos_drm_fb_init(struct drm_file *file_priv, struct drm_device *dev,
 	 * so that default framebuffer has no its own gem object,
 	 * only its own buffer object.
 	 */
-	exynos_fb->entry = exynos_gem_obj->entry;
+	exynos_fb->buffer = exynos_gem_obj->buffer;
 
-	DRM_LOG_KMS("paddr = 0x%lx, size = 0x%x, gem object = 0x%x\n",
-			(unsigned long)exynos_fb->entry->paddr, size,
+	DRM_LOG_KMS("dma_addr = 0x%lx, size = 0x%x, gem object = 0x%x\n",
+			(unsigned long)exynos_fb->buffer->dma_addr, size,
 			(unsigned int)&exynos_gem_obj->base);
 
 out:
@@ -222,22 +222,22 @@ struct drm_framebuffer *exynos_drm_fb_create(struct drm_device *dev,
 	return exynos_drm_fb_init(file_priv, dev, mode_cmd);
 }
 
-struct exynos_drm_buf_entry *exynos_drm_fb_get_buf(struct drm_framebuffer *fb)
+struct exynos_drm_gem_buf *exynos_drm_fb_get_buf(struct drm_framebuffer *fb)
 {
 	struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb);
-	struct exynos_drm_buf_entry *entry;
+	struct exynos_drm_gem_buf *buffer;
 
 	DRM_DEBUG_KMS("%s\n", __FILE__);
 
-	entry = exynos_fb->entry;
-	if (!entry)
+	buffer = exynos_fb->buffer;
+	if (!buffer)
 		return NULL;
 
-	DRM_DEBUG_KMS("vaddr = 0x%lx, paddr = 0x%lx\n",
-			(unsigned long)entry->vaddr,
-			(unsigned long)entry->paddr);
+	DRM_DEBUG_KMS("vaddr = 0x%lx, dma_addr = 0x%lx\n",
+			(unsigned long)buffer->kvaddr,
+			(unsigned long)buffer->dma_addr);
 
-	return entry;
+	return buffer;
 }
 
 static void exynos_drm_output_poll_changed(struct drm_device *dev)