1 files changed, 0 insertions, 111 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_iommu.c b/drivers/gpu/drm/exynos/exynos_drm_iommu.c
deleted file mode 100644
index 0f373702414e..000000000000
--- a/drivers/gpu/drm/exynos/exynos_drm_iommu.c
+++ /dev/null
@@ -1,111 +0,0 @@
-/* exynos_drm_iommu.c
- *
- * Copyright (c) 2012 Samsung Electronics Co., Ltd.
- * Author: Inki Dae <inki.dae@samsung.com>
- *
- * This program is free software; you can redistribute  it and/or modify it
- * under  the terms of  the GNU General  Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
- */
-
-#include <drm/drmP.h>
-#include <drm/exynos_drm.h>
-
-#include <linux/dma-mapping.h>
-#include <linux/iommu.h>
-
-#include "exynos_drm_drv.h"
-#include "exynos_drm_iommu.h"
-
-static inline int configure_dma_max_seg_size(struct device *dev)
-{
-	if (!dev->dma_parms)
-		dev->dma_parms = kzalloc(sizeof(*dev->dma_parms), GFP_KERNEL);
-	if (!dev->dma_parms)
-		return -ENOMEM;
-
-	dma_set_max_seg_size(dev, DMA_BIT_MASK(32));
-	return 0;
-}
-
-static inline void clear_dma_max_seg_size(struct device *dev)
-{
-	kfree(dev->dma_parms);
-	dev->dma_parms = NULL;
-}
-
-/*
- * drm_create_iommu_mapping - create a mapping structure
- *
- * @drm_dev: DRM device
- */
-int drm_create_iommu_mapping(struct drm_device *drm_dev)
-{
-	struct exynos_drm_private *priv = drm_dev->dev_private;
-
-	return __exynos_iommu_create_mapping(priv, EXYNOS_DEV_ADDR_START,
-					     EXYNOS_DEV_ADDR_SIZE);
-}
-
-/*
- * drm_release_iommu_mapping - release iommu mapping structure
- *
- * @drm_dev: DRM device
- */
-void drm_release_iommu_mapping(struct drm_device *drm_dev)
-{
-	struct exynos_drm_private *priv = drm_dev->dev_private;
-
-	__exynos_iommu_release_mapping(priv);
-}
-
-/*
- * drm_iommu_attach_device- attach device to iommu mapping
- *
- * @drm_dev: DRM device
- * @subdrv_dev: device to be attach
- *
- * This function should be called by sub drivers to attach it to iommu
- * mapping.
- */
-int drm_iommu_attach_device(struct drm_device *drm_dev,
-				struct device *subdrv_dev)
-{
-	struct exynos_drm_private *priv = drm_dev->dev_private;
-	int ret;
-
-	if (get_dma_ops(priv->dma_dev) != get_dma_ops(subdrv_dev)) {
-		DRM_ERROR("Device %s lacks support for IOMMU\n",
-			  dev_name(subdrv_dev));
-		return -EINVAL;
-	}
-
-	ret = configure_dma_max_seg_size(subdrv_dev);
-	if (ret)
-		return ret;
-
-	ret = __exynos_iommu_attach(priv, subdrv_dev);
-	if (ret)
-		clear_dma_max_seg_size(subdrv_dev);
-
-	return 0;
-}
-
-/*
- * drm_iommu_detach_device -detach device address space mapping from device
- *
- * @drm_dev: DRM device
- * @subdrv_dev: device to be detached
- *
- * This function should be called by sub drivers to detach it from iommu
- * mapping
- */
-void drm_iommu_detach_device(struct drm_device *drm_dev,
-				struct device *subdrv_dev)
-{
-	struct exynos_drm_private *priv = drm_dev->dev_private;
-
-	__exynos_iommu_detach(priv, subdrv_dev);
-	clear_dma_max_seg_size(subdrv_dev);
-}