Release 4.17 drivers/gpu/drm/rockchip/rockchip_drm_fb.c

/*
 * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
 * Author:Mark Yao <mark.yao@rock-chips.com>
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * 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 <linux/kernel.h>
#include <drm/drm.h>
#include <drm/drmP.h>
#include <drm/drm_atomic.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_crtc_helper.h>

#include "rockchip_drm_drv.h"
#include "rockchip_drm_fb.h"
#include "rockchip_drm_gem.h"
#include "rockchip_drm_psr.h"


#define to_rockchip_fb(x) container_of(x, struct rockchip_drm_fb, fb)


struct rockchip_drm_fb {
	
struct drm_framebuffer fb;
	
struct drm_gem_object *obj[ROCKCHIP_MAX_FB_BUFFER];
};



struct drm_gem_object *rockchip_fb_get_gem_obj(struct drm_framebuffer *fb,
					       unsigned int plane)
{
	struct rockchip_drm_fb *rk_fb = to_rockchip_fb(fb);

	if (plane >= ROCKCHIP_MAX_FB_BUFFER)
		return NULL;

	return rk_fb->obj[plane];
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Mark Yao
43
100.00%
1
100.00%
Total
43
100.00%
1
100.00%



static void rockchip_drm_fb_destroy(struct drm_framebuffer *fb)
{
	struct rockchip_drm_fb *rockchip_fb = to_rockchip_fb(fb);
	int i;

	for (i = 0; i < ROCKCHIP_MAX_FB_BUFFER; i++)
		drm_gem_object_put_unlocked(rockchip_fb->obj[i]);

	drm_framebuffer_cleanup(fb);
	kfree(rockchip_fb);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Mark Yao
55
96.49%
1
33.33%
Cihangir Akturk
1
1.75%
1
33.33%
SF Markus Elfring
1
1.75%
1
33.33%
Total
57
100.00%
3
100.00%



static int rockchip_drm_fb_create_handle(struct drm_framebuffer *fb,
					 struct drm_file *file_priv,
					 unsigned int *handle)
{
	struct rockchip_drm_fb *rockchip_fb = to_rockchip_fb(fb);

	return drm_gem_handle_create(file_priv,
				     rockchip_fb->obj[0], handle);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Mark Yao
46
100.00%
1
100.00%
Total
46
100.00%
1
100.00%



static int rockchip_drm_fb_dirty(struct drm_framebuffer *fb,
				 struct drm_file *file,
				 unsigned int flags, unsigned int color,
				 struct drm_clip_rect *clips,
				 unsigned int num_clips)
{
	rockchip_drm_psr_flush_all(fb->dev);
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Yakir Yang
42
97.67%
1
50.00%
Sean Paul
1
2.33%
1
50.00%
Total
43
100.00%
2
100.00%


static const struct drm_framebuffer_funcs rockchip_drm_fb_funcs = {
	.destroy	= rockchip_drm_fb_destroy,
	.create_handle	= rockchip_drm_fb_create_handle,
	.dirty		= rockchip_drm_fb_dirty,
};


static struct rockchip_drm_fb *

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 rockchip_drm_fb *rockchip_fb;
	int ret;
	int i;

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

	drm_helper_mode_fill_fb_struct(dev, &rockchip_fb->fb, mode_cmd);

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

	ret = drm_framebuffer_init(dev, &rockchip_fb->fb,
				   &rockchip_drm_fb_funcs);
	if (ret) {
		DRM_DEV_ERROR(dev->dev,
			      "Failed to initialize framebuffer: %d\n",
			      ret);
		kfree(rockchip_fb);
		return ERR_PTR(ret);
	}

	return rockchip_fb;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Mark Yao
144
97.30%
1
25.00%
Ville Syrjälä
3
2.03%
2
50.00%
Haneen Mohammed
1
0.68%
1
25.00%
Total
148
100.00%
4
100.00%


static struct drm_framebuffer *

rockchip_user_fb_create(struct drm_device *dev, struct drm_file *file_priv,
			const struct drm_mode_fb_cmd2 *mode_cmd)
{
	struct rockchip_drm_fb *rockchip_fb;
	struct drm_gem_object *objs[ROCKCHIP_MAX_FB_BUFFER];
	struct drm_gem_object *obj;
	unsigned int hsub;
	unsigned int vsub;
	int num_planes;
	int ret;
	int i;

	hsub = drm_format_horz_chroma_subsampling(mode_cmd->pixel_format);
	vsub = drm_format_vert_chroma_subsampling(mode_cmd->pixel_format);
	num_planes = min(drm_format_num_planes(mode_cmd->pixel_format),
			 ROCKCHIP_MAX_FB_BUFFER);

	for (i = 0; i < num_planes; i++) {
		unsigned int width = mode_cmd->width / (i ? hsub : 1);
		unsigned int height = mode_cmd->height / (i ? vsub : 1);
		unsigned int min_size;

		obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[i]);
		if (!obj) {
			DRM_DEV_ERROR(dev->dev,
				      "Failed to lookup GEM object\n");
			ret = -ENXIO;
			goto err_gem_object_unreference;
		}

		min_size = (height - 1) * mode_cmd->pitches[i] +
			mode_cmd->offsets[i] +
			width * drm_format_plane_cpp(mode_cmd->pixel_format, i);

		if (obj->size < min_size) {
			drm_gem_object_put_unlocked(obj);
			ret = -EINVAL;
			goto err_gem_object_unreference;
		}
		objs[i] = obj;
	}

	rockchip_fb = rockchip_fb_alloc(dev, mode_cmd, objs, i);
	if (IS_ERR(rockchip_fb)) {
		ret = PTR_ERR(rockchip_fb);
		goto err_gem_object_unreference;
	}

	return &rockchip_fb->fb;

err_gem_object_unreference:
	for (i--; i >= 0; i--)
		drm_gem_object_put_unlocked(objs[i]);
	return ERR_PTR(ret);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Mark Yao
305
98.71%
1
25.00%
Cihangir Akturk
2
0.65%
1
25.00%
Ville Syrjälä
1
0.32%
1
25.00%
Haneen Mohammed
1
0.32%
1
25.00%
Total
309
100.00%
4
100.00%


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 = rockchip_user_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 rockchip_drm_fb *rockchip_fb;

	rockchip_fb = rockchip_fb_alloc(dev, mode_cmd, &obj, 1);
	if (IS_ERR(rockchip_fb))
		return ERR_CAST(rockchip_fb);

	return &rockchip_fb->fb;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Mark Yao
56
91.80%
1
33.33%
Julia Lawall
4
6.56%
1
33.33%
Ville Syrjälä
1
1.64%
1
33.33%
Total
61
100.00%
3
100.00%



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;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Mark Yao
52
85.25%
1
50.00%
Daniel Vetter
9
14.75%
1
50.00%
Total
61
100.00%
2
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Mark Yao
797
89.85%
3
16.67%
Yakir Yang
50
5.64%
1
5.56%
Daniel Vetter
16
1.80%
1
5.56%
Ville Syrjälä
6
0.68%
3
16.67%
John Keeping
4
0.45%
2
11.11%
Julia Lawall
4
0.45%
1
5.56%
Cihangir Akturk
3
0.34%
1
5.56%
Haneen Mohammed
2
0.23%
1
5.56%
Maxime Ripard
1
0.11%
1
5.56%
Sean Paul
1
0.11%
1
5.56%
Laurent Pinchart
1
0.11%
1
5.56%
Noralf Trönnes
1
0.11%
1
5.56%
SF Markus Elfring
1
0.11%
1
5.56%
Total
887
100.00%
18
100.00%
Directory: drivers/gpu/drm/rockchip

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.