diff --git a/drivers/gpu/drm/mediatek/Makefile b/drivers/gpu/drm/mediatek/Makefile index e0ac49b07d50..952d294642fb 100644 --- a/drivers/gpu/drm/mediatek/Makefile +++ b/drivers/gpu/drm/mediatek/Makefile @@ -14,7 +14,6 @@ mediatek-drm-y := mtk_crtc.o \ mtk_dsi.o \ mtk_dpi.o \ mtk_ethdr.o \ - mtk_gem.o \ mtk_mdp_rdma.o \ mtk_padding.o \ mtk_plane.o diff --git a/drivers/gpu/drm/mediatek/mtk_crtc.c b/drivers/gpu/drm/mediatek/mtk_crtc.c index 351d58c50b84..fcb16f3f7b23 100644 --- a/drivers/gpu/drm/mediatek/mtk_crtc.c +++ b/drivers/gpu/drm/mediatek/mtk_crtc.c @@ -23,7 +23,6 @@ #include "mtk_crtc.h" #include "mtk_ddp_comp.h" #include "mtk_drm_drv.h" -#include "mtk_gem.h" #include "mtk_plane.h" /* diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c index a94c51a83261..6f6db2e1980e 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include #include @@ -29,7 +30,6 @@ #include "mtk_ddp_comp.h" #include "mtk_disp_drv.h" #include "mtk_drm_drv.h" -#include "mtk_gem.h" #define DRIVER_NAME "mediatek" #define DRIVER_DESC "Mediatek SoC DRM" @@ -565,8 +565,7 @@ static int mtk_drm_kms_init(struct drm_device *drm) goto err_component_unbind; } - for (i = 0; i < private->data->mmsys_dev_num; i++) - private->all_drm_private[i]->dma_dev = dma_dev; + drm_dev_set_dma_dev(drm, dma_dev); /* * Configure the DMA segment size to make sure we get contiguous IOVA @@ -600,26 +599,12 @@ static void mtk_drm_kms_deinit(struct drm_device *drm) DEFINE_DRM_GEM_FOPS(mtk_drm_fops); -/* - * We need to override this because the device used to import the memory is - * not dev->dev, as drm_gem_prime_import() expects. - */ -static struct drm_gem_object *mtk_gem_prime_import(struct drm_device *dev, - struct dma_buf *dma_buf) -{ - struct mtk_drm_private *private = dev->dev_private; - - return drm_gem_prime_import_dev(dev, dma_buf, private->dma_dev); -} - static const struct drm_driver mtk_drm_driver = { .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC, - .dumb_create = mtk_gem_dumb_create, + DRM_GEM_DMA_DRIVER_OPS, DRM_FBDEV_DMA_DRIVER_OPS, - .gem_prime_import = mtk_gem_prime_import, - .gem_prime_import_sg_table = mtk_gem_prime_import_sg_table, .fops = &mtk_drm_fops, .name = DRIVER_NAME, diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h index 675cdc90a440..1fc3df4b5485 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h @@ -54,7 +54,6 @@ struct mtk_mmsys_driver_data { struct mtk_drm_private { struct drm_device *drm; - struct device *dma_dev; bool mtk_drm_bound; bool drm_master; struct device *dev; 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 - */ - -#include -#include - -#include -#include -#include -#include -#include -#include - -#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; -} diff --git a/drivers/gpu/drm/mediatek/mtk_gem.h b/drivers/gpu/drm/mediatek/mtk_gem.h deleted file mode 100644 index afebc3a970a8..000000000000 --- a/drivers/gpu/drm/mediatek/mtk_gem.h +++ /dev/null @@ -1,17 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * Copyright (c) 2015 MediaTek Inc. - */ - -#ifndef _MTK_GEM_H_ -#define _MTK_GEM_H_ - -#include -#include - -int mtk_gem_dumb_create(struct drm_file *file_priv, struct drm_device *dev, - struct drm_mode_create_dumb *args); -struct drm_gem_object *mtk_gem_prime_import_sg_table(struct drm_device *dev, - struct dma_buf_attachment *attach, struct sg_table *sg); - -#endif