mirror of https://gitee.com/openkylin/linux.git
98 lines
2.5 KiB
C
98 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Copyright (C) 2016 Marek Vasut <marex@denx.de>
|
|
*/
|
|
|
|
#include <linux/of_graph.h>
|
|
|
|
#include <drm/drm_atomic.h>
|
|
#include <drm/drm_atomic_helper.h>
|
|
#include <drm/drm_crtc.h>
|
|
#include <drm/drm_fb_cma_helper.h>
|
|
#include <drm/drm_gem_cma_helper.h>
|
|
#include <drm/drm_of.h>
|
|
#include <drm/drm_panel.h>
|
|
#include <drm/drm_plane_helper.h>
|
|
#include <drm/drm_probe_helper.h>
|
|
#include <drm/drm_simple_kms_helper.h>
|
|
|
|
#include "mxsfb_drv.h"
|
|
|
|
static struct mxsfb_drm_private *
|
|
drm_connector_to_mxsfb_drm_private(struct drm_connector *connector)
|
|
{
|
|
return container_of(connector, struct mxsfb_drm_private, connector);
|
|
}
|
|
|
|
static int mxsfb_panel_get_modes(struct drm_connector *connector)
|
|
{
|
|
struct mxsfb_drm_private *mxsfb =
|
|
drm_connector_to_mxsfb_drm_private(connector);
|
|
|
|
if (mxsfb->panel)
|
|
return drm_panel_get_modes(mxsfb->panel);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct
|
|
drm_connector_helper_funcs mxsfb_panel_connector_helper_funcs = {
|
|
.get_modes = mxsfb_panel_get_modes,
|
|
};
|
|
|
|
static enum drm_connector_status
|
|
mxsfb_panel_connector_detect(struct drm_connector *connector, bool force)
|
|
{
|
|
struct mxsfb_drm_private *mxsfb =
|
|
drm_connector_to_mxsfb_drm_private(connector);
|
|
|
|
if (mxsfb->panel)
|
|
return connector_status_connected;
|
|
|
|
return connector_status_disconnected;
|
|
}
|
|
|
|
static void mxsfb_panel_connector_destroy(struct drm_connector *connector)
|
|
{
|
|
struct mxsfb_drm_private *mxsfb =
|
|
drm_connector_to_mxsfb_drm_private(connector);
|
|
|
|
if (mxsfb->panel)
|
|
drm_panel_detach(mxsfb->panel);
|
|
|
|
drm_connector_unregister(connector);
|
|
drm_connector_cleanup(connector);
|
|
}
|
|
|
|
static const struct drm_connector_funcs mxsfb_panel_connector_funcs = {
|
|
.detect = mxsfb_panel_connector_detect,
|
|
.fill_modes = drm_helper_probe_single_connector_modes,
|
|
.destroy = mxsfb_panel_connector_destroy,
|
|
.reset = drm_atomic_helper_connector_reset,
|
|
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
|
|
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
|
|
};
|
|
|
|
int mxsfb_create_output(struct drm_device *drm)
|
|
{
|
|
struct mxsfb_drm_private *mxsfb = drm->dev_private;
|
|
struct drm_panel *panel;
|
|
int ret;
|
|
|
|
ret = drm_of_find_panel_or_bridge(drm->dev->of_node, 0, 0, &panel, NULL);
|
|
if (ret)
|
|
return ret;
|
|
|
|
mxsfb->connector.dpms = DRM_MODE_DPMS_OFF;
|
|
mxsfb->connector.polled = 0;
|
|
drm_connector_helper_add(&mxsfb->connector,
|
|
&mxsfb_panel_connector_helper_funcs);
|
|
ret = drm_connector_init(drm, &mxsfb->connector,
|
|
&mxsfb_panel_connector_funcs,
|
|
DRM_MODE_CONNECTOR_Unknown);
|
|
if (!ret)
|
|
mxsfb->panel = panel;
|
|
|
|
return ret;
|
|
}
|