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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd4 * Author:Mark Yao <mark.yao@rock-chips.com>5 */6 7#include <linux/kernel.h>8 9#include <drm/drm.h>10#include <drm/drm_atomic.h>11#include <drm/drm_damage_helper.h>12#include <drm/drm_fourcc.h>13#include <drm/drm_framebuffer.h>14#include <drm/drm_gem_framebuffer_helper.h>15#include <drm/drm_probe_helper.h>16 17#include "rockchip_drm_drv.h"18#include "rockchip_drm_fb.h"19#include "rockchip_drm_gem.h"20 21static const struct drm_framebuffer_funcs rockchip_drm_fb_funcs = {22 .destroy = drm_gem_fb_destroy,23 .create_handle = drm_gem_fb_create_handle,24 .dirty = drm_atomic_helper_dirtyfb,25};26 27static const struct drm_mode_config_helper_funcs rockchip_mode_config_helpers = {28 .atomic_commit_tail = drm_atomic_helper_commit_tail_rpm,29};30 31static struct drm_framebuffer *32rockchip_fb_create(struct drm_device *dev, struct drm_file *file,33 const struct drm_mode_fb_cmd2 *mode_cmd)34{35 struct drm_afbc_framebuffer *afbc_fb;36 const struct drm_format_info *info;37 int ret;38 39 info = drm_get_format_info(dev, mode_cmd);40 if (!info)41 return ERR_PTR(-ENOMEM);42 43 afbc_fb = kzalloc(sizeof(*afbc_fb), GFP_KERNEL);44 if (!afbc_fb)45 return ERR_PTR(-ENOMEM);46 47 ret = drm_gem_fb_init_with_funcs(dev, &afbc_fb->base, file, mode_cmd,48 &rockchip_drm_fb_funcs);49 if (ret) {50 kfree(afbc_fb);51 return ERR_PTR(ret);52 }53 54 if (drm_is_afbc(mode_cmd->modifier[0])) {55 int ret, i;56 57 ret = drm_gem_fb_afbc_init(dev, mode_cmd, afbc_fb);58 if (ret) {59 struct drm_gem_object **obj = afbc_fb->base.obj;60 61 for (i = 0; i < info->num_planes; ++i)62 drm_gem_object_put(obj[i]);63 64 kfree(afbc_fb);65 return ERR_PTR(ret);66 }67 }68 69 return &afbc_fb->base;70}71 72static const struct drm_mode_config_funcs rockchip_drm_mode_config_funcs = {73 .fb_create = rockchip_fb_create,74 .atomic_check = drm_atomic_helper_check,75 .atomic_commit = drm_atomic_helper_commit,76};77 78void rockchip_drm_mode_config_init(struct drm_device *dev)79{80 dev->mode_config.min_width = 0;81 dev->mode_config.min_height = 0;82 83 /*84 * set max width and height as default value(4096x4096).85 * this value would be used to check framebuffer size limitation86 * at drm_mode_addfb().87 */88 dev->mode_config.max_width = 4096;89 dev->mode_config.max_height = 4096;90 91 dev->mode_config.funcs = &rockchip_drm_mode_config_funcs;92 dev->mode_config.helper_private = &rockchip_mode_config_helpers;93 94 dev->mode_config.normalize_zpos = true;95}96