1 files changed, 0 insertions, 231 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_gem.c b/drivers/gpu/drm/mediatek/mtk_gem.c
deleted file mode 100644
index f059a1452220..000000000000
--- a/drivers/gpu/drm/mediatek/mtk_gem.c
+++ /dev/null
@@ -1,231 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (c) 2015 MediaTek Inc.
- * Copyright (c) 2025 Collabora Ltd.
- *                    AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
- */
-
-#include <linux/dma-buf.h>
-#include <linux/vmalloc.h>
-
-#include <drm/drm.h>
-#include <drm/drm_device.h>
-#include <drm/drm_gem.h>
-#include <drm/drm_gem_dma_helper.h>
-#include <drm/drm_prime.h>
-#include <drm/drm_print.h>
-
-#include "mtk_drm_drv.h"
-#include "mtk_gem.h"
-
-static int mtk_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
-
-static void mtk_gem_free_object(struct drm_gem_object *obj)
-{
-	struct drm_gem_dma_object *dma_obj = to_drm_gem_dma_obj(obj);
-	struct mtk_drm_private *priv = obj->dev->dev_private;
-
-	if (dma_obj->sgt)
-		drm_prime_gem_destroy(obj, dma_obj->sgt);
-	else
-		dma_free_wc(priv->dma_dev, dma_obj->base.size,
-			    dma_obj->vaddr, dma_obj->dma_addr);
-
-	/* release file pointer to gem object. */
-	drm_gem_object_release(obj);
-
-	kfree(dma_obj);
-}
-
-/*
- * Allocate a sg_table for this GEM object.
- * Note: Both the table's contents, and the sg_table itself must be freed by
- *       the caller.
- * Returns a pointer to the newly allocated sg_table, or an ERR_PTR() error.
- */
-static struct sg_table *mtk_gem_prime_get_sg_table(struct drm_gem_object *obj)
-{
-	struct drm_gem_dma_object *dma_obj = to_drm_gem_dma_obj(obj);
-	struct mtk_drm_private *priv = obj->dev->dev_private;
-	struct sg_table *sgt;
-	int ret;
-
-	sgt = kzalloc_obj(*sgt);
-	if (!sgt)
-		return ERR_PTR(-ENOMEM);
-
-	ret = dma_get_sgtable(priv->dma_dev, sgt, dma_obj->vaddr,
-			      dma_obj->dma_addr, obj->size);
-	if (ret) {
-		DRM_ERROR("failed to allocate sgt, %d\n", ret);
-		kfree(sgt);
-		return ERR_PTR(ret);
-	}
-
-	return sgt;
-}
-
-static const struct drm_gem_object_funcs mtk_gem_object_funcs = {
-	.free = mtk_gem_free_object,
-	.print_info = drm_gem_dma_object_print_info,
-	.get_sg_table = mtk_gem_prime_get_sg_table,
-	.vmap = drm_gem_dma_object_vmap,
-	.mmap = mtk_gem_object_mmap,
-	.vm_ops = &drm_gem_dma_vm_ops,
-};
-
-static struct drm_gem_dma_object *mtk_gem_init(struct drm_device *dev,
-					unsigned long size, bool private)
-{
-	struct drm_gem_dma_object *dma_obj;
-	int ret;
-
-	size = round_up(size, PAGE_SIZE);
-
-	if (size == 0)
-		return ERR_PTR(-EINVAL);
-
-	dma_obj = kzalloc_obj(*dma_obj);
-	if (!dma_obj)
-		return ERR_PTR(-ENOMEM);
-
-	dma_obj->base.funcs = &mtk_gem_object_funcs;
-
-	if (private) {
-		ret = 0;
-		drm_gem_private_object_init(dev, &dma_obj->base, size);
-	} else {
-		ret = drm_gem_object_init(dev, &dma_obj->base, size);
-	}
-	if (ret) {
-		DRM_ERROR("failed to initialize gem object\n");
-		kfree(dma_obj);
-		return ERR_PTR(ret);
-	}
-
-	return dma_obj;
-}
-
-static struct drm_gem_dma_object *mtk_gem_create(struct drm_device *dev, size_t size)
-{
-	struct mtk_drm_private *priv = dev->dev_private;
-	struct drm_gem_dma_object *dma_obj;
-	struct drm_gem_object *obj;
-	int ret;
-
-	dma_obj = mtk_gem_init(dev, size, false);
-	if (IS_ERR(dma_obj))
-		return ERR_CAST(dma_obj);
-
-	obj = &dma_obj->base;
-
-	dma_obj->vaddr = dma_alloc_wc(priv->dma_dev, obj->size,
-				      &dma_obj->dma_addr,
-				      GFP_KERNEL | __GFP_NOWARN);
-	if (!dma_obj->vaddr) {
-		DRM_ERROR("failed to allocate %zx byte dma buffer", obj->size);
-		ret = -ENOMEM;
-		goto err_gem_free;
-	}
-
-	DRM_DEBUG_DRIVER("vaddr = %p dma_addr = %pad size = %zu\n",
-			 dma_obj->vaddr, &dma_obj->dma_addr,
-			 size);
-
-	return dma_obj;
-
-err_gem_free:
-	drm_gem_object_release(obj);
-	kfree(dma_obj);
-	return ERR_PTR(ret);
-}
-
-int mtk_gem_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
-			struct drm_mode_create_dumb *args)
-{
-	struct drm_gem_dma_object *dma_obj;
-	int ret;
-
-	args->pitch = DIV_ROUND_UP(args->width * args->bpp, 8);
-
-	/*
-	 * Multiply 2 variables of different types,
-	 * for example: args->size = args->spacing * args->height;
-	 * may cause coverity issue with unintentional overflow.
-	 */
-	args->size = args->pitch;
-	args->size *= args->height;
-
-	dma_obj = mtk_gem_create(dev, args->size);
-	if (IS_ERR(dma_obj))
-		return PTR_ERR(dma_obj);
-
-	/*
-	 * allocate a id of idr table where the obj is registered
-	 * and handle has the id what user can see.
-	 */
-	ret = drm_gem_handle_create(file_priv, &dma_obj->base, &args->handle);
-	if (ret)
-		goto err_handle_create;
-
-	/* drop reference from allocate - handle holds it now. */
-	drm_gem_object_put(&dma_obj->base);
-
-	return 0;
-
-err_handle_create:
-	mtk_gem_free_object(&dma_obj->base);
-	return ret;
-}
-
-static int mtk_gem_object_mmap(struct drm_gem_object *obj,
-			       struct vm_area_struct *vma)
-
-{
-	struct drm_gem_dma_object *dma_obj = to_drm_gem_dma_obj(obj);
-	struct mtk_drm_private *priv = obj->dev->dev_private;
-	int ret;
-
-	/*
-	 * Set vm_pgoff (used as a fake buffer offset by DRM) to 0 and map the
-	 * whole buffer from the start.
-	 */
-	vma->vm_pgoff -= drm_vma_node_start(&obj->vma_node);
-
-	/*
-	 * dma_alloc_attrs() allocated a struct page table for mtk_gem, so clear
-	 * VM_PFNMAP flag that was set by drm_gem_mmap_obj()/drm_gem_mmap().
-	 */
-	vm_flags_mod(vma, VM_IO | VM_DONTEXPAND | VM_DONTDUMP, VM_PFNMAP);
-
-	vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags));
-	vma->vm_page_prot = pgprot_decrypted(vma->vm_page_prot);
-
-	ret = dma_mmap_wc(priv->dma_dev, vma, dma_obj->vaddr,
-			  dma_obj->dma_addr, obj->size);
-	if (ret)
-		drm_gem_vm_close(vma);
-
-	return ret;
-}
-
-struct drm_gem_object *mtk_gem_prime_import_sg_table(struct drm_device *dev,
-			struct dma_buf_attachment *attach, struct sg_table *sgt)
-{
-	struct drm_gem_dma_object *dma_obj;
-
-	/* check if the entries in the sg_table are contiguous */
-	if (drm_prime_get_contiguous_size(sgt) < attach->dmabuf->size) {
-		DRM_ERROR("sg_table is not contiguous");
-		return ERR_PTR(-EINVAL);
-	}
-
-	dma_obj = mtk_gem_init(dev, attach->dmabuf->size, true);
-	if (IS_ERR(dma_obj))
-		return ERR_CAST(dma_obj);
-
-	dma_obj->dma_addr = sg_dma_address(sgt->sgl);
-	dma_obj->sgt = sgt;
-
-	return &dma_obj->base;
-}