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/*
* Copyright 2017 NXP
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* 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 <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_atomic.h>
#include <drm/drm_gem_cma_helper.h>
#include <linux/dma-buf.h>
#include <linux/reservation.h>
#include "imx-drm.h"
#include "dcss-crtc.h"
static void dcss_drm_output_poll_changed(struct drm_device *drm)
{
struct imx_drm_device *imxdrm = drm->dev_private;
drm_fbdev_cma_hotplug_event(imxdrm->fbhelper);
}
static int dcss_drm_atomic_check(struct drm_device *drm,
struct drm_atomic_state *state)
{
int ret;
ret = drm_atomic_helper_check_modeset(drm, state);
if (ret)
return ret;
ret = drm_atomic_helper_check_planes(drm, state);
if (ret)
return ret;
/*
* Check modeset again in case crtc_state->mode_changed is
* updated in plane's ->atomic_check callback.
*/
return drm_atomic_helper_check_modeset(drm, state);
}
static int dcss_drm_atomic_commit(struct drm_device *drm,
struct drm_atomic_state *state,
bool nonblock)
{
struct drm_plane_state *plane_state;
struct drm_plane *plane;
struct dma_buf *dma_buf;
int i;
/*
* If the plane fb has an dma-buf attached, fish out the exclusive
* fence for the atomic helper to wait on.
*/
for_each_plane_in_state(state, plane, plane_state, i) {
if ((plane->state->fb != plane_state->fb) && plane_state->fb) {
dma_buf = drm_fb_cma_get_gem_obj(plane_state->fb,
0)->base.dma_buf;
if (!dma_buf)
continue;
plane_state->fence =
reservation_object_get_excl_rcu(dma_buf->resv);
}
}
return drm_atomic_helper_commit(drm, state, nonblock);
}
static void dcss_kms_setup_output_pipe(struct drm_atomic_state *state)
{
struct drm_crtc *crtc;
struct drm_connector *connector;
struct drm_connector_state *conn_state;
struct drm_display_info *di;
int i;
for_each_connector_in_state(state, connector, conn_state, i) {
if (!connector->state->best_encoder)
continue;
if (!connector->state->crtc->state->active ||
!drm_atomic_crtc_needs_modeset(connector->state->crtc->state))
continue;
crtc = connector->state->crtc;
di = &connector->display_info;
dcss_crtc_setup_opipe(crtc, connector, di->hdmi.colorimetry,
di->hdmi.hdr_panel_metadata.eotf,
HDMI_QUANTIZATION_RANGE_FULL);
}
}
static void dcss_drm_atomic_commit_tail(struct drm_atomic_state *state)
{
struct drm_device *dev = state->dev;
drm_atomic_helper_commit_modeset_disables(dev, state);
dcss_kms_setup_output_pipe(state);
drm_atomic_helper_commit_modeset_enables(dev, state);
drm_atomic_helper_commit_planes(dev, state,
DRM_PLANE_COMMIT_ACTIVE_ONLY);
drm_atomic_helper_commit_hw_done(state);
drm_atomic_helper_wait_for_vblanks(dev, state);
drm_atomic_helper_cleanup_planes(dev, state);
}
const struct drm_mode_config_funcs dcss_drm_mode_config_funcs = {
.fb_create = drm_fb_cma_create,
.output_poll_changed = dcss_drm_output_poll_changed,
.atomic_check = dcss_drm_atomic_check,
.atomic_commit = dcss_drm_atomic_commit,
};
struct drm_mode_config_helper_funcs dcss_drm_mode_config_helpers = {
.atomic_commit_tail = dcss_drm_atomic_commit_tail,
};
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