[linux-block.git] / 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 <drm/drm_gem_framebuffer_helper.h>

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

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;
}

static const struct drm_framebuffer_funcs rockchip_drm_fb_funcs = {
	.destroy       = drm_gem_fb_destroy,
	.create_handle = drm_gem_fb_create_handle,
	.dirty	       = rockchip_drm_fb_dirty,
};

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 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 drm_framebuffer *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;
	}

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

	return fb;

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

static void
rockchip_drm_psr_inhibit_get_state(struct drm_atomic_state *state)
{
	struct drm_crtc *crtc;
	struct drm_crtc_state *crtc_state;
	struct drm_encoder *encoder;
	u32 encoder_mask = 0;
	int i;

	for_each_old_crtc_in_state(state, crtc, crtc_state, i) {
		encoder_mask |= crtc_state->encoder_mask;
		encoder_mask |= crtc->state->encoder_mask;
	}

	drm_for_each_encoder_mask(encoder, state->dev, encoder_mask)
		rockchip_drm_psr_inhibit_get(encoder);
}

static void
rockchip_drm_psr_inhibit_put_state(struct drm_atomic_state *state)
{
	struct drm_crtc *crtc;
	struct drm_crtc_state *crtc_state;
	struct drm_encoder *encoder;
	u32 encoder_mask = 0;
	int i;

	for_each_old_crtc_in_state(state, crtc, crtc_state, i) {
		encoder_mask |= crtc_state->encoder_mask;
		encoder_mask |= crtc->state->encoder_mask;
	}

	drm_for_each_encoder_mask(encoder, state->dev, encoder_mask)
		rockchip_drm_psr_inhibit_put(encoder);
}

static void
rockchip_atomic_helper_commit_tail_rpm(struct drm_atomic_state *old_state)
{
	struct drm_device *dev = old_state->dev;

	rockchip_drm_psr_inhibit_get_state(old_state);

	drm_atomic_helper_commit_modeset_disables(dev, old_state);

	drm_atomic_helper_commit_modeset_enables(dev, old_state);

	drm_atomic_helper_commit_planes(dev, old_state,
					DRM_PLANE_COMMIT_ACTIVE_ONLY);

	rockchip_drm_psr_inhibit_put_state(old_state);

	drm_atomic_helper_commit_hw_done(old_state);

	drm_atomic_helper_wait_for_vblanks(dev, old_state);

	drm_atomic_helper_cleanup_planes(dev, old_state);
}

static const struct drm_mode_config_helper_funcs rockchip_mode_config_helpers = {
	.atomic_commit_tail = rockchip_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 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
2048e328 MY	1	/*
	2	* Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
	3	* Author:Mark Yao <mark.yao@rock-chips.com>
	4	*
	5	* This software is licensed under the terms of the GNU General Public
	6	* License version 2, as published by the Free Software Foundation, and
	7	* may be copied, distributed, and modified under those terms.
	8	*
	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*/
	14
	15	#include <linux/kernel.h>
	16	#include <drm/drm.h>
	17	#include <drm/drmP.h>
63ebb9fa	18	#include <drm/drm_atomic.h>
2048e328 MY	19	#include <drm/drm_fb_helper.h>
2048e328 MY	20	#include <drm/drm_crtc_helper.h>
4c7c9a63	21	#include <drm/drm_gem_framebuffer_helper.h>
2048e328 MY	22
2048e328 MY	23	#include "rockchip_drm_drv.h"
a7e03fb5	24	#include "rockchip_drm_fb.h"
2048e328	25	#include "rockchip_drm_gem.h"
5182c1a5	26	#include "rockchip_drm_psr.h"
2048e328	27
5182c1a5 YY	28	static int rockchip_drm_fb_dirty(struct drm_framebuffer *fb,
	29	struct drm_file *file,
	30	unsigned int flags, unsigned int color,
	31	struct drm_clip_rect *clips,
	32	unsigned int num_clips)
	33	{
b883c9ba	34	rockchip_drm_psr_flush_all(fb->dev);
5182c1a5 YY	35	return 0;
	36	}
	37
28c508ec	38	static const struct drm_framebuffer_funcs rockchip_drm_fb_funcs = {
4c7c9a63 DS	39	.destroy = drm_gem_fb_destroy,
	40	.create_handle = drm_gem_fb_create_handle,
	41	.dirty = rockchip_drm_fb_dirty,
2048e328 MY	42	};
2048e328 MY	43
957428f9	44	static struct drm_framebuffer *
1eb83451	45	rockchip_fb_alloc(struct drm_device dev, const struct drm_mode_fb_cmd2 mode_cmd,
2048e328 MY	46	struct drm_gem_object **obj, unsigned int num_planes)
2048e328 MY	47	{
957428f9	48	struct drm_framebuffer *fb;
2048e328 MY	49	int ret;
	50	int i;
	51
957428f9 DS	52	fb = kzalloc(sizeof(*fb), GFP_KERNEL);
957428f9 DS	53	if (!fb)
2048e328 MY	54	return ERR_PTR(-ENOMEM);
2048e328 MY	55
957428f9	56	drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
2048e328 MY	57
2048e328 MY	58	for (i = 0; i < num_planes; i++)
957428f9	59	fb->obj[i] = obj[i];
2048e328	60
957428f9	61	ret = drm_framebuffer_init(dev, fb, &rockchip_drm_fb_funcs);
2048e328	62	if (ret) {
d8dd6804 HM	63	DRM_DEV_ERROR(dev->dev,
	64	"Failed to initialize framebuffer: %d\n",
	65	ret);
957428f9	66	kfree(fb);
2048e328 MY	67	return ERR_PTR(ret);
	68	}
	69
957428f9	70	return fb;
2048e328 MY	71	}
	72
	73	static struct drm_framebuffer *
	74	rockchip_user_fb_create(struct drm_device dev, struct drm_file file_priv,
1eb83451	75	const struct drm_mode_fb_cmd2 *mode_cmd)
2048e328	76	{
957428f9	77	struct drm_framebuffer *fb;
2048e328 MY	78	struct drm_gem_object *objs[ROCKCHIP_MAX_FB_BUFFER];
	79	struct drm_gem_object *obj;
	80	unsigned int hsub;
	81	unsigned int vsub;
	82	int num_planes;
	83	int ret;
	84	int i;
	85
	86	hsub = drm_format_horz_chroma_subsampling(mode_cmd->pixel_format);
	87	vsub = drm_format_vert_chroma_subsampling(mode_cmd->pixel_format);
	88	num_planes = min(drm_format_num_planes(mode_cmd->pixel_format),
	89	ROCKCHIP_MAX_FB_BUFFER);
	90
	91	for (i = 0; i < num_planes; i++) {
	92	unsigned int width = mode_cmd->width / (i ? hsub : 1);
	93	unsigned int height = mode_cmd->height / (i ? vsub : 1);
	94	unsigned int min_size;
	95
a8ad0bd8	96	obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[i]);
2048e328	97	if (!obj) {
d8dd6804 HM	98	DRM_DEV_ERROR(dev->dev,
d8dd6804 HM	99	"Failed to lookup GEM object\n");
2048e328 MY	100	ret = -ENXIO;
	101	goto err_gem_object_unreference;
	102	}
	103
	104	min_size = (height - 1) * mode_cmd->pitches[i] +
	105	mode_cmd->offsets[i] +
	106	width * drm_format_plane_cpp(mode_cmd->pixel_format, i);
	107
	108	if (obj->size < min_size) {
adedbf03	109	drm_gem_object_put_unlocked(obj);
2048e328 MY	110	ret = -EINVAL;
	111	goto err_gem_object_unreference;
	112	}
	113	objs[i] = obj;
	114	}
	115
957428f9 DS	116	fb = rockchip_fb_alloc(dev, mode_cmd, objs, i);
	117	if (IS_ERR(fb)) {
	118	ret = PTR_ERR(fb);
2048e328 MY	119	goto err_gem_object_unreference;
	120	}
	121
957428f9	122	return fb;
2048e328 MY	123
	124	err_gem_object_unreference:
	125	for (i--; i >= 0; i--)
adedbf03	126	drm_gem_object_put_unlocked(objs[i]);
2048e328 MY	127	return ERR_PTR(ret);
	128	}
	129
d2d4f51d TF	130	static void
	131	rockchip_drm_psr_inhibit_get_state(struct drm_atomic_state *state)
	132	{
	133	struct drm_crtc *crtc;
	134	struct drm_crtc_state *crtc_state;
	135	struct drm_encoder *encoder;
	136	u32 encoder_mask = 0;
	137	int i;
	138
	139	for_each_old_crtc_in_state(state, crtc, crtc_state, i) {
	140	encoder_mask \|= crtc_state->encoder_mask;
	141	encoder_mask \|= crtc->state->encoder_mask;
	142	}
	143
	144	drm_for_each_encoder_mask(encoder, state->dev, encoder_mask)
	145	rockchip_drm_psr_inhibit_get(encoder);
	146	}
	147
	148	static void
	149	rockchip_drm_psr_inhibit_put_state(struct drm_atomic_state *state)
	150	{
	151	struct drm_crtc *crtc;
	152	struct drm_crtc_state *crtc_state;
	153	struct drm_encoder *encoder;
	154	u32 encoder_mask = 0;
	155	int i;
	156
	157	for_each_old_crtc_in_state(state, crtc, crtc_state, i) {
	158	encoder_mask \|= crtc_state->encoder_mask;
	159	encoder_mask \|= crtc->state->encoder_mask;
	160	}
	161
	162	drm_for_each_encoder_mask(encoder, state->dev, encoder_mask)
	163	rockchip_drm_psr_inhibit_put(encoder);
	164	}
	165
	166	static void
	167	rockchip_atomic_helper_commit_tail_rpm(struct drm_atomic_state *old_state)
	168	{
	169	struct drm_device *dev = old_state->dev;
	170
	171	rockchip_drm_psr_inhibit_get_state(old_state);
	172
	173	drm_atomic_helper_commit_modeset_disables(dev, old_state);
	174
	175	drm_atomic_helper_commit_modeset_enables(dev, old_state);
	176
	177	drm_atomic_helper_commit_planes(dev, old_state,
	178	DRM_PLANE_COMMIT_ACTIVE_ONLY);
	179
	180	rockchip_drm_psr_inhibit_put_state(old_state);
	181
	182	drm_atomic_helper_commit_hw_done(old_state);
	183
	184	drm_atomic_helper_wait_for_vblanks(dev, old_state);
	185
	186	drm_atomic_helper_cleanup_planes(dev, old_state);
	187	}
	188
a4b10cce	189	static const struct drm_mode_config_helper_funcs rockchip_mode_config_helpers = {
d2d4f51d	190	.atomic_commit_tail = rockchip_atomic_helper_commit_tail_rpm,
893b6cad	191	};
63ebb9fa	192
2048e328 MY	193	static const struct drm_mode_config_funcs rockchip_drm_mode_config_funcs = {
2048e328 MY	194	.fb_create = rockchip_user_fb_create,
33e9d038	195	.output_poll_changed = drm_fb_helper_output_poll_changed,
63ebb9fa	196	.atomic_check = drm_atomic_helper_check,
893b6cad	197	.atomic_commit = drm_atomic_helper_commit,
2048e328 MY	198	};
	199
	200	struct drm_framebuffer *
	201	rockchip_drm_framebuffer_init(struct drm_device *dev,
1eb83451	202	const struct drm_mode_fb_cmd2 *mode_cmd,
2048e328 MY	203	struct drm_gem_object *obj)
2048e328 MY	204	{
957428f9	205	struct drm_framebuffer *fb;
2048e328	206
957428f9 DS	207	fb = rockchip_fb_alloc(dev, mode_cmd, &obj, 1);
	208	if (IS_ERR(fb))
	209	return ERR_CAST(fb);
2048e328	210
957428f9	211	return fb;
2048e328 MY	212	}
	213
	214	void rockchip_drm_mode_config_init(struct drm_device *dev)
	215	{
	216	dev->mode_config.min_width = 0;
	217	dev->mode_config.min_height = 0;
	218
	219	/*
	220	* set max width and height as default value(4096x4096).
	221	* this value would be used to check framebuffer size limitation
	222	* at drm_mode_addfb().
	223	*/
	224	dev->mode_config.max_width = 4096;
	225	dev->mode_config.max_height = 4096;
	226
	227	dev->mode_config.funcs = &rockchip_drm_mode_config_funcs;
893b6cad	228	dev->mode_config.helper_private = &rockchip_mode_config_helpers;
2048e328	229	}