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