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
);