[mirror_ubuntu-jammy-kernel.git] / drivers / gpu / drm / rockchip / rockchip_drm_fb.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 struct drm_framebuffer *
rockchip_fb_create(struct drm_device *dev, struct drm_file *file,
		   const struct drm_mode_fb_cmd2 *mode_cmd)
{
	struct drm_afbc_framebuffer *afbc_fb;
	const struct drm_format_info *info;
	int ret;

	info = drm_get_format_info(dev, mode_cmd);
	if (!info)
		return ERR_PTR(-ENOMEM);

	afbc_fb = kzalloc(sizeof(*afbc_fb), GFP_KERNEL);
	if (!afbc_fb)
		return ERR_PTR(-ENOMEM);

	ret = drm_gem_fb_init_with_funcs(dev, &afbc_fb->base, file, mode_cmd,
					 &rockchip_drm_fb_funcs);
	if (ret) {
		kfree(afbc_fb);
		return ERR_PTR(ret);
	}

	if (drm_is_afbc(mode_cmd->modifier[0])) {
		int ret, i;

		ret = drm_gem_fb_afbc_init(dev, mode_cmd, afbc_fb);
		if (ret) {
			struct drm_gem_object **obj = afbc_fb->base.obj;

			for (i = 0; i < info->num_planes; ++i)
				drm_gem_object_put_unlocked(obj[i]);

			kfree(afbc_fb);
			return ERR_PTR(ret);
		}
	}

	return &afbc_fb->base;
}

static const struct drm_mode_config_funcs rockchip_drm_mode_config_funcs = {
	.fb_create = rockchip_fb_create,
	.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;
}
Commit	Line	Data
9c92ab61	1	// SPDX-License-Identifier: GPL-2.0-only
2048e328 MY	2	/*
	3	* Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
	4	* Author:Mark Yao <mark.yao@rock-chips.com>
2048e328 MY	5	*/
	6
	7	#include <linux/kernel.h>
c2156ccd	8
2048e328	9	#include <drm/drm.h>
63ebb9fa	10	#include <drm/drm_atomic.h>
6c83ca79	11	#include <drm/drm_damage_helper.h>
2048e328	12	#include <drm/drm_fb_helper.h>
c2156ccd	13	#include <drm/drm_fourcc.h>
4c7c9a63	14	#include <drm/drm_gem_framebuffer_helper.h>
fcd70cd3	15	#include <drm/drm_probe_helper.h>
2048e328 MY	16
2048e328 MY	17	#include "rockchip_drm_drv.h"
a7e03fb5	18	#include "rockchip_drm_fb.h"
2048e328 MY	19	#include "rockchip_drm_gem.h"
2048e328 MY	20
28c508ec	21	static const struct drm_framebuffer_funcs rockchip_drm_fb_funcs = {
4c7c9a63 DS	22	.destroy = drm_gem_fb_destroy,
4c7c9a63 DS	23	.create_handle = drm_gem_fb_create_handle,
6c83ca79	24	.dirty = drm_atomic_helper_dirtyfb,
2048e328 MY	25	};
2048e328 MY	26
957428f9	27	static struct drm_framebuffer *
1eb83451	28	rockchip_fb_alloc(struct drm_device dev, const struct drm_mode_fb_cmd2 mode_cmd,
2048e328 MY	29	struct drm_gem_object **obj, unsigned int num_planes)
2048e328 MY	30	{
957428f9	31	struct drm_framebuffer *fb;
2048e328 MY	32	int ret;
	33	int i;
	34
957428f9 DS	35	fb = kzalloc(sizeof(*fb), GFP_KERNEL);
957428f9 DS	36	if (!fb)
2048e328 MY	37	return ERR_PTR(-ENOMEM);
2048e328 MY	38
957428f9	39	drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
2048e328 MY	40
2048e328 MY	41	for (i = 0; i < num_planes; i++)
957428f9	42	fb->obj[i] = obj[i];
2048e328	43
957428f9	44	ret = drm_framebuffer_init(dev, fb, &rockchip_drm_fb_funcs);
2048e328	45	if (ret) {
d8dd6804 HM	46	DRM_DEV_ERROR(dev->dev,
	47	"Failed to initialize framebuffer: %d\n",
	48	ret);
957428f9	49	kfree(fb);
2048e328 MY	50	return ERR_PTR(ret);
	51	}
	52
957428f9	53	return fb;
2048e328 MY	54	}
2048e328 MY	55
a4b10cce	56	static const struct drm_mode_config_helper_funcs rockchip_mode_config_helpers = {
c87fb38d	57	.atomic_commit_tail = drm_atomic_helper_commit_tail_rpm,
893b6cad	58	};
63ebb9fa	59
7707f722 AP	60	static struct drm_framebuffer *
	61	rockchip_fb_create(struct drm_device dev, struct drm_file file,
	62	const struct drm_mode_fb_cmd2 *mode_cmd)
	63	{
	64	struct drm_afbc_framebuffer *afbc_fb;
	65	const struct drm_format_info *info;
	66	int ret;
	67
	68	info = drm_get_format_info(dev, mode_cmd);
	69	if (!info)
	70	return ERR_PTR(-ENOMEM);
	71
	72	afbc_fb = kzalloc(sizeof(*afbc_fb), GFP_KERNEL);
	73	if (!afbc_fb)
	74	return ERR_PTR(-ENOMEM);
	75
	76	ret = drm_gem_fb_init_with_funcs(dev, &afbc_fb->base, file, mode_cmd,
	77	&rockchip_drm_fb_funcs);
	78	if (ret) {
	79	kfree(afbc_fb);
	80	return ERR_PTR(ret);
	81	}
	82
	83	if (drm_is_afbc(mode_cmd->modifier[0])) {
	84	int ret, i;
	85
	86	ret = drm_gem_fb_afbc_init(dev, mode_cmd, afbc_fb);
	87	if (ret) {
	88	struct drm_gem_object **obj = afbc_fb->base.obj;
	89
	90	for (i = 0; i < info->num_planes; ++i)
	91	drm_gem_object_put_unlocked(obj[i]);
	92
	93	kfree(afbc_fb);
	94	return ERR_PTR(ret);
	95	}
	96	}
	97
	98	return &afbc_fb->base;
	99	}
	100
2048e328	101	static const struct drm_mode_config_funcs rockchip_drm_mode_config_funcs = {
7707f722	102	.fb_create = rockchip_fb_create,
33e9d038	103	.output_poll_changed = drm_fb_helper_output_poll_changed,
63ebb9fa	104	.atomic_check = drm_atomic_helper_check,
893b6cad	105	.atomic_commit = drm_atomic_helper_commit,
2048e328 MY	106	};
	107
	108	struct drm_framebuffer *
	109	rockchip_drm_framebuffer_init(struct drm_device *dev,
1eb83451	110	const struct drm_mode_fb_cmd2 *mode_cmd,
2048e328 MY	111	struct drm_gem_object *obj)
2048e328 MY	112	{
957428f9	113	struct drm_framebuffer *fb;
2048e328	114
957428f9 DS	115	fb = rockchip_fb_alloc(dev, mode_cmd, &obj, 1);
	116	if (IS_ERR(fb))
	117	return ERR_CAST(fb);
2048e328	118
957428f9	119	return fb;
2048e328 MY	120	}
	121
	122	void rockchip_drm_mode_config_init(struct drm_device *dev)
	123	{
	124	dev->mode_config.min_width = 0;
	125	dev->mode_config.min_height = 0;
	126
	127	/*
	128	* set max width and height as default value(4096x4096).
	129	* this value would be used to check framebuffer size limitation
	130	* at drm_mode_addfb().
	131	*/
	132	dev->mode_config.max_width = 4096;
	133	dev->mode_config.max_height = 4096;
	134
	135	dev->mode_config.funcs = &rockchip_drm_mode_config_funcs;
893b6cad	136	dev->mode_config.helper_private = &rockchip_mode_config_helpers;
2048e328	137	}