diff options
Diffstat (limited to 'drivers/gpu/drm/mediatek/mtk_drm_fb.c')
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_drm_fb.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_fb.c b/drivers/gpu/drm/mediatek/mtk_drm_fb.c deleted file mode 100644 index d4246c9dceae..000000000000 --- a/drivers/gpu/drm/mediatek/mtk_drm_fb.c +++ /dev/null @@ -1,165 +0,0 @@ -/* - * Copyright (c) 2015 MediaTek Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include <drm/drmP.h> -#include <drm/drm_crtc_helper.h> -#include <drm/drm_fb_helper.h> -#include <drm/drm_gem.h> -#include <linux/dma-buf.h> -#include <linux/reservation.h> - -#include "mtk_drm_drv.h" -#include "mtk_drm_fb.h" -#include "mtk_drm_gem.h" - -/* - * mtk specific framebuffer structure. - * - * @fb: drm framebuffer object. - * @gem_obj: array of gem objects. - */ -struct mtk_drm_fb { - struct drm_framebuffer base; - /* For now we only support a single plane */ - struct drm_gem_object *gem_obj; -}; - -#define to_mtk_fb(x) container_of(x, struct mtk_drm_fb, base) - -struct drm_gem_object *mtk_fb_get_gem_obj(struct drm_framebuffer *fb) -{ - struct mtk_drm_fb *mtk_fb = to_mtk_fb(fb); - - return mtk_fb->gem_obj; -} - -static int mtk_drm_fb_create_handle(struct drm_framebuffer *fb, - struct drm_file *file_priv, - unsigned int *handle) -{ - struct mtk_drm_fb *mtk_fb = to_mtk_fb(fb); - - return drm_gem_handle_create(file_priv, mtk_fb->gem_obj, handle); -} - -static void mtk_drm_fb_destroy(struct drm_framebuffer *fb) -{ - struct mtk_drm_fb *mtk_fb = to_mtk_fb(fb); - - drm_framebuffer_cleanup(fb); - - drm_gem_object_unreference_unlocked(mtk_fb->gem_obj); - - kfree(mtk_fb); -} - -static const struct drm_framebuffer_funcs mtk_drm_fb_funcs = { - .create_handle = mtk_drm_fb_create_handle, - .destroy = mtk_drm_fb_destroy, -}; - -static struct mtk_drm_fb *mtk_drm_framebuffer_init(struct drm_device *dev, - const struct drm_mode_fb_cmd2 *mode, - struct drm_gem_object *obj) -{ - struct mtk_drm_fb *mtk_fb; - int ret; - - if (drm_format_num_planes(mode->pixel_format) != 1) - return ERR_PTR(-EINVAL); - - mtk_fb = kzalloc(sizeof(*mtk_fb), GFP_KERNEL); - if (!mtk_fb) - return ERR_PTR(-ENOMEM); - - drm_helper_mode_fill_fb_struct(dev, &mtk_fb->base, mode); - - mtk_fb->gem_obj = obj; - - ret = drm_framebuffer_init(dev, &mtk_fb->base, &mtk_drm_fb_funcs); - if (ret) { - DRM_ERROR("failed to initialize framebuffer\n"); - kfree(mtk_fb); - return ERR_PTR(ret); - } - - return mtk_fb; -} - -/* - * Wait for any exclusive fence in fb's gem object's reservation object. - * - * Returns -ERESTARTSYS if interrupted, else 0. - */ -int mtk_fb_wait(struct drm_framebuffer *fb) -{ - struct drm_gem_object *gem; - struct reservation_object *resv; - long ret; - - if (!fb) - return 0; - - gem = mtk_fb_get_gem_obj(fb); - if (!gem || !gem->dma_buf || !gem->dma_buf->resv) - return 0; - - resv = gem->dma_buf->resv; - ret = reservation_object_wait_timeout_rcu(resv, false, true, - MAX_SCHEDULE_TIMEOUT); - /* MAX_SCHEDULE_TIMEOUT on success, -ERESTARTSYS if interrupted */ - if (WARN_ON(ret < 0)) - return ret; - - return 0; -} - -struct drm_framebuffer *mtk_drm_mode_fb_create(struct drm_device *dev, - struct drm_file *file, - const struct drm_mode_fb_cmd2 *cmd) -{ - struct mtk_drm_fb *mtk_fb; - struct drm_gem_object *gem; - unsigned int width = cmd->width; - unsigned int height = cmd->height; - unsigned int size, bpp; - int ret; - - if (drm_format_num_planes(cmd->pixel_format) != 1) - return ERR_PTR(-EINVAL); - - gem = drm_gem_object_lookup(file, cmd->handles[0]); - if (!gem) - return ERR_PTR(-ENOENT); - - bpp = drm_format_plane_cpp(cmd->pixel_format, 0); - size = (height - 1) * cmd->pitches[0] + width * bpp; - size += cmd->offsets[0]; - - if (gem->size < size) { - ret = -EINVAL; - goto unreference; - } - - mtk_fb = mtk_drm_framebuffer_init(dev, cmd, gem); - if (IS_ERR(mtk_fb)) { - ret = PTR_ERR(mtk_fb); - goto unreference; - } - - return &mtk_fb->base; - -unreference: - drm_gem_object_unreference_unlocked(gem); - return ERR_PTR(ret); -} |