2 * Copyright (C) 2016 Marek Vasut <marex@denx.de>
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
14 #include <linux/of_graph.h>
16 #include <drm/drm_atomic.h>
17 #include <drm/drm_atomic_helper.h>
18 #include <drm/drm_crtc.h>
19 #include <drm/drm_crtc_helper.h>
20 #include <drm/drm_fb_cma_helper.h>
21 #include <drm/drm_gem_cma_helper.h>
22 #include <drm/drm_panel.h>
23 #include <drm/drm_plane_helper.h>
24 #include <drm/drm_simple_kms_helper.h>
27 #include "mxsfb_drv.h"
29 static struct mxsfb_drm_private *
30 drm_connector_to_mxsfb_drm_private(struct drm_connector *connector)
32 return container_of(connector, struct mxsfb_drm_private, connector);
35 static int mxsfb_panel_get_modes(struct drm_connector *connector)
37 struct mxsfb_drm_private *mxsfb =
38 drm_connector_to_mxsfb_drm_private(connector);
41 return mxsfb->panel->funcs->get_modes(mxsfb->panel);
47 drm_connector_helper_funcs mxsfb_panel_connector_helper_funcs = {
48 .get_modes = mxsfb_panel_get_modes,
51 static enum drm_connector_status
52 mxsfb_panel_connector_detect(struct drm_connector *connector, bool force)
54 struct mxsfb_drm_private *mxsfb =
55 drm_connector_to_mxsfb_drm_private(connector);
58 return connector_status_connected;
60 return connector_status_disconnected;
63 static void mxsfb_panel_connector_destroy(struct drm_connector *connector)
65 struct mxsfb_drm_private *mxsfb =
66 drm_connector_to_mxsfb_drm_private(connector);
69 drm_panel_detach(mxsfb->panel);
71 drm_connector_unregister(connector);
72 drm_connector_cleanup(connector);
75 static const struct drm_connector_funcs mxsfb_panel_connector_funcs = {
76 .dpms = drm_atomic_helper_connector_dpms,
77 .detect = mxsfb_panel_connector_detect,
78 .fill_modes = drm_helper_probe_single_connector_modes,
79 .destroy = mxsfb_panel_connector_destroy,
80 .reset = drm_atomic_helper_connector_reset,
81 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
82 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
85 static int mxsfb_attach_endpoint(struct drm_device *drm,
86 const struct of_endpoint *ep)
88 struct mxsfb_drm_private *mxsfb = drm->dev_private;
89 struct device_node *np;
90 struct drm_panel *panel;
91 int ret = -EPROBE_DEFER;
93 np = of_graph_get_remote_port_parent(ep->local_node);
94 panel = of_drm_find_panel(np);
100 mxsfb->connector.dpms = DRM_MODE_DPMS_OFF;
101 mxsfb->connector.polled = 0;
102 drm_connector_helper_add(&mxsfb->connector,
103 &mxsfb_panel_connector_helper_funcs);
104 ret = drm_connector_init(drm, &mxsfb->connector,
105 &mxsfb_panel_connector_funcs,
106 DRM_MODE_CONNECTOR_Unknown);
108 mxsfb->panel = panel;
113 int mxsfb_create_output(struct drm_device *drm)
115 struct device_node *ep_np = NULL;
116 struct of_endpoint ep;
119 for_each_endpoint_of_node(drm->dev->of_node, ep_np) {
120 ret = of_graph_parse_endpoint(ep_np, &ep);
122 ret = mxsfb_attach_endpoint(drm, &ep);