mirror of https://gitee.com/openkylin/linux.git
138 lines
3.3 KiB
C
138 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
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* Author:Mark Yao <mark.yao@rock-chips.com>
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*/
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#include <linux/kernel.h>
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#include <drm/drm.h>
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#include <drm/drm_atomic.h>
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#include <drm/drm_damage_helper.h>
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#include <drm/drm_fb_helper.h>
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#include <drm/drm_fourcc.h>
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#include <drm/drm_gem_framebuffer_helper.h>
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#include <drm/drm_probe_helper.h>
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#include "rockchip_drm_drv.h"
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#include "rockchip_drm_fb.h"
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#include "rockchip_drm_gem.h"
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static const struct drm_framebuffer_funcs rockchip_drm_fb_funcs = {
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.destroy = drm_gem_fb_destroy,
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.create_handle = drm_gem_fb_create_handle,
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.dirty = drm_atomic_helper_dirtyfb,
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};
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static struct drm_framebuffer *
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rockchip_fb_alloc(struct drm_device *dev, const struct drm_mode_fb_cmd2 *mode_cmd,
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struct drm_gem_object **obj, unsigned int num_planes)
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{
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struct drm_framebuffer *fb;
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int ret;
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int i;
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fb = kzalloc(sizeof(*fb), GFP_KERNEL);
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if (!fb)
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return ERR_PTR(-ENOMEM);
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drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
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for (i = 0; i < num_planes; i++)
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fb->obj[i] = obj[i];
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ret = drm_framebuffer_init(dev, fb, &rockchip_drm_fb_funcs);
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if (ret) {
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DRM_DEV_ERROR(dev->dev,
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"Failed to initialize framebuffer: %d\n",
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ret);
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kfree(fb);
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return ERR_PTR(ret);
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}
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return fb;
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}
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static const struct drm_mode_config_helper_funcs rockchip_mode_config_helpers = {
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.atomic_commit_tail = drm_atomic_helper_commit_tail_rpm,
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};
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static struct drm_framebuffer *
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rockchip_fb_create(struct drm_device *dev, struct drm_file *file,
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const struct drm_mode_fb_cmd2 *mode_cmd)
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{
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struct drm_afbc_framebuffer *afbc_fb;
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const struct drm_format_info *info;
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int ret;
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info = drm_get_format_info(dev, mode_cmd);
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if (!info)
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return ERR_PTR(-ENOMEM);
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afbc_fb = kzalloc(sizeof(*afbc_fb), GFP_KERNEL);
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if (!afbc_fb)
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return ERR_PTR(-ENOMEM);
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ret = drm_gem_fb_init_with_funcs(dev, &afbc_fb->base, file, mode_cmd,
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&rockchip_drm_fb_funcs);
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if (ret) {
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kfree(afbc_fb);
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return ERR_PTR(ret);
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}
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if (drm_is_afbc(mode_cmd->modifier[0])) {
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int ret, i;
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ret = drm_gem_fb_afbc_init(dev, mode_cmd, afbc_fb);
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if (ret) {
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struct drm_gem_object **obj = afbc_fb->base.obj;
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for (i = 0; i < info->num_planes; ++i)
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drm_gem_object_put_unlocked(obj[i]);
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kfree(afbc_fb);
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return ERR_PTR(ret);
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}
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}
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return &afbc_fb->base;
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}
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static const struct drm_mode_config_funcs rockchip_drm_mode_config_funcs = {
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.fb_create = rockchip_fb_create,
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.output_poll_changed = drm_fb_helper_output_poll_changed,
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.atomic_check = drm_atomic_helper_check,
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.atomic_commit = drm_atomic_helper_commit,
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};
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struct drm_framebuffer *
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rockchip_drm_framebuffer_init(struct drm_device *dev,
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const struct drm_mode_fb_cmd2 *mode_cmd,
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struct drm_gem_object *obj)
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{
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struct drm_framebuffer *fb;
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fb = rockchip_fb_alloc(dev, mode_cmd, &obj, 1);
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if (IS_ERR(fb))
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return ERR_CAST(fb);
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return fb;
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}
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void rockchip_drm_mode_config_init(struct drm_device *dev)
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{
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dev->mode_config.min_width = 0;
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dev->mode_config.min_height = 0;
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/*
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* set max width and height as default value(4096x4096).
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* this value would be used to check framebuffer size limitation
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* at drm_mode_addfb().
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*/
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dev->mode_config.max_width = 4096;
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dev->mode_config.max_height = 4096;
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dev->mode_config.funcs = &rockchip_drm_mode_config_funcs;
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dev->mode_config.helper_private = &rockchip_mode_config_helpers;
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}
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