[linux-2.6-block.git] / drivers / gpu / drm / msm / msm_atomic.c

/*
 * Copyright (C) 2014 Red Hat
 * Author: Rob Clark <robdclark@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published by
 * the Free Software Foundation.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <drm/drm_atomic_uapi.h>

#include "msm_drv.h"
#include "msm_gem.h"
#include "msm_kms.h"

static void msm_atomic_wait_for_commit_done(struct drm_device *dev,
		struct drm_atomic_state *old_state)
{
	struct drm_crtc *crtc;
	struct drm_crtc_state *new_crtc_state;
	struct msm_drm_private *priv = old_state->dev->dev_private;
	struct msm_kms *kms = priv->kms;
	int i;

	for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) {
		if (!new_crtc_state->active)
			continue;

		if (drm_crtc_vblank_get(crtc))
			continue;

		kms->funcs->wait_for_crtc_commit_done(kms, crtc);

		drm_crtc_vblank_put(crtc);
	}
}

int msm_atomic_prepare_fb(struct drm_plane *plane,
			  struct drm_plane_state *new_state)
{
	struct msm_drm_private *priv = plane->dev->dev_private;
	struct msm_kms *kms = priv->kms;
	struct drm_gem_object *obj;
	struct msm_gem_object *msm_obj;
	struct dma_fence *fence;

	if (!new_state->fb)
		return 0;

	obj = msm_framebuffer_bo(new_state->fb, 0);
	msm_obj = to_msm_bo(obj);
	fence = reservation_object_get_excl_rcu(msm_obj->resv);

	drm_atomic_set_fence_for_plane(new_state, fence);

	return msm_framebuffer_prepare(new_state->fb, kms->aspace);
}

void msm_atomic_commit_tail(struct drm_atomic_state *state)
{
	struct drm_device *dev = state->dev;
	struct msm_drm_private *priv = dev->dev_private;
	struct msm_kms *kms = priv->kms;

	kms->funcs->prepare_commit(kms, state);

	drm_atomic_helper_commit_modeset_disables(dev, state);

	drm_atomic_helper_commit_planes(dev, state, 0);

	drm_atomic_helper_commit_modeset_enables(dev, state);

	if (kms->funcs->commit) {
		DRM_DEBUG_ATOMIC("triggering commit\n");
		kms->funcs->commit(kms, state);
	}

	if (!state->legacy_cursor_update)
		msm_atomic_wait_for_commit_done(dev, state);

	kms->funcs->complete_commit(kms, state);

	drm_atomic_helper_commit_hw_done(state);

	drm_atomic_helper_cleanup_planes(dev, state);
}
Commit	Line	Data
cf3a7e4c RC	1	/*
	2	* Copyright (C) 2014 Red Hat
	3	* Author: Rob Clark <robdclark@gmail.com>
	4	*
	5	* This program is free software; you can redistribute it and/or modify it
	6	* under the terms of the GNU General Public License version 2 as published by
	7	* the Free Software Foundation.
	8	*
	9	* This program is distributed in the hope that it will be useful, but WITHOUT
	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	12	* more details.
	13	*
	14	* You should have received a copy of the GNU General Public License along with
	15	* this program. If not, see <http://www.gnu.org/licenses/>.
	16	*/
	17
72fdb40c DV	18	#include <drm/drm_atomic_uapi.h>
72fdb40c DV	19
cf3a7e4c	20	#include "msm_drv.h"
db8f4d5d	21	#include "msm_gem.h"
cf3a7e4c	22	#include "msm_kms.h"
cf3a7e4c	23
0a5c9aad HL	24	static void msm_atomic_wait_for_commit_done(struct drm_device *dev,
	25	struct drm_atomic_state *old_state)
	26	{
	27	struct drm_crtc *crtc;
d7429669	28	struct drm_crtc_state *new_crtc_state;
0a5c9aad HL	29	struct msm_drm_private *priv = old_state->dev->dev_private;
0a5c9aad HL	30	struct msm_kms *kms = priv->kms;
0a5c9aad HL	31	int i;
0a5c9aad HL	32
d7429669 ML	33	for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) {
d7429669 ML	34	if (!new_crtc_state->active)
0a5c9aad HL	35	continue;
0a5c9aad HL	36
3b712e43 SP	37	if (drm_crtc_vblank_get(crtc))
	38	continue;
	39
0a5c9aad	40	kms->funcs->wait_for_crtc_commit_done(kms, crtc);
3b712e43 SP	41
3b712e43 SP	42	drm_crtc_vblank_put(crtc);
0a5c9aad HL	43	}
	44	}
	45
db8f4d5d SP	46	int msm_atomic_prepare_fb(struct drm_plane *plane,
	47	struct drm_plane_state *new_state)
	48	{
	49	struct msm_drm_private *priv = plane->dev->dev_private;
	50	struct msm_kms *kms = priv->kms;
	51	struct drm_gem_object *obj;
	52	struct msm_gem_object *msm_obj;
	53	struct dma_fence *fence;
	54
	55	if (!new_state->fb)
	56	return 0;
	57
	58	obj = msm_framebuffer_bo(new_state->fb, 0);
	59	msm_obj = to_msm_bo(obj);
	60	fence = reservation_object_get_excl_rcu(msm_obj->resv);
	61
	62	drm_atomic_set_fence_for_plane(new_state, fence);
	63
	64	return msm_framebuffer_prepare(new_state->fb, kms->aspace);
	65	}
	66
d14659f5	67	void msm_atomic_commit_tail(struct drm_atomic_state *state)
cf3a7e4c	68	{
cf3a7e4c	69	struct drm_device *dev = state->dev;
0b776d45 RC	70	struct msm_drm_private *priv = dev->dev_private;
	71	struct msm_kms *kms = priv->kms;
	72
	73	kms->funcs->prepare_commit(kms, state);
cf3a7e4c	74
1af434a9	75	drm_atomic_helper_commit_modeset_disables(dev, state);
cf3a7e4c	76
2b58e98d	77	drm_atomic_helper_commit_planes(dev, state, 0);
cf3a7e4c	78
1af434a9	79	drm_atomic_helper_commit_modeset_enables(dev, state);
cf3a7e4c	80
2b7ac1a8 JS	81	if (kms->funcs->commit) {
	82	DRM_DEBUG_ATOMIC("triggering commit\n");
	83	kms->funcs->commit(kms, state);
	84	}
	85
50bcc689 SP	86	if (!state->legacy_cursor_update)
50bcc689 SP	87	msm_atomic_wait_for_commit_done(dev, state);
cf3a7e4c	88
0b776d45	89	kms->funcs->complete_commit(kms, state);
70db18dc	90
70db18dc SP	91	drm_atomic_helper_commit_hw_done(state);
	92
	93	drm_atomic_helper_cleanup_planes(dev, state);
347b90b4	94	}