1 /*
2 * R-Car Display Unit HDMI Connector
3 *
4 * Copyright (C) 2014 Renesas Electronics Corporation
5 *
6 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 */
13
14 #include <drm/drmP.h>
15 #include <drm/drm_atomic_helper.h>
16 #include <drm/drm_crtc.h>
17 #include <drm/drm_crtc_helper.h>
18 #include <drm/drm_encoder_slave.h>
19
20 #include "rcar_du_drv.h"
21 #include "rcar_du_encoder.h"
22 #include "rcar_du_hdmicon.h"
23 #include "rcar_du_kms.h"
24
25 #define to_slave_funcs(e) (to_rcar_encoder(e)->slave.slave_funcs)
26
rcar_du_hdmi_connector_get_modes(struct drm_connector * connector)27 static int rcar_du_hdmi_connector_get_modes(struct drm_connector *connector)
28 {
29 struct rcar_du_connector *con = to_rcar_connector(connector);
30 struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(con->encoder);
31 struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
32
33 if (sfuncs->get_modes == NULL)
34 return 0;
35
36 return sfuncs->get_modes(encoder, connector);
37 }
38
rcar_du_hdmi_connector_mode_valid(struct drm_connector * connector,struct drm_display_mode * mode)39 static int rcar_du_hdmi_connector_mode_valid(struct drm_connector *connector,
40 struct drm_display_mode *mode)
41 {
42 struct rcar_du_connector *con = to_rcar_connector(connector);
43 struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(con->encoder);
44 struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
45
46 if (sfuncs->mode_valid == NULL)
47 return MODE_OK;
48
49 return sfuncs->mode_valid(encoder, mode);
50 }
51
52 static const struct drm_connector_helper_funcs connector_helper_funcs = {
53 .get_modes = rcar_du_hdmi_connector_get_modes,
54 .mode_valid = rcar_du_hdmi_connector_mode_valid,
55 .best_encoder = rcar_du_connector_best_encoder,
56 };
57
rcar_du_hdmi_connector_destroy(struct drm_connector * connector)58 static void rcar_du_hdmi_connector_destroy(struct drm_connector *connector)
59 {
60 drm_connector_unregister(connector);
61 drm_connector_cleanup(connector);
62 }
63
64 static enum drm_connector_status
rcar_du_hdmi_connector_detect(struct drm_connector * connector,bool force)65 rcar_du_hdmi_connector_detect(struct drm_connector *connector, bool force)
66 {
67 struct rcar_du_connector *con = to_rcar_connector(connector);
68 struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(con->encoder);
69 struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
70
71 if (sfuncs->detect == NULL)
72 return connector_status_unknown;
73
74 return sfuncs->detect(encoder, connector);
75 }
76
77 static const struct drm_connector_funcs connector_funcs = {
78 .dpms = drm_atomic_helper_connector_dpms,
79 .reset = drm_atomic_helper_connector_reset,
80 .detect = rcar_du_hdmi_connector_detect,
81 .fill_modes = drm_helper_probe_single_connector_modes,
82 .destroy = rcar_du_hdmi_connector_destroy,
83 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
84 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
85 };
86
rcar_du_hdmi_connector_init(struct rcar_du_device * rcdu,struct rcar_du_encoder * renc)87 int rcar_du_hdmi_connector_init(struct rcar_du_device *rcdu,
88 struct rcar_du_encoder *renc)
89 {
90 struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(renc);
91 struct rcar_du_connector *rcon;
92 struct drm_connector *connector;
93 int ret;
94
95 rcon = devm_kzalloc(rcdu->dev, sizeof(*rcon), GFP_KERNEL);
96 if (rcon == NULL)
97 return -ENOMEM;
98
99 connector = &rcon->connector;
100 connector->display_info.width_mm = 0;
101 connector->display_info.height_mm = 0;
102 connector->interlace_allowed = true;
103 connector->polled = DRM_CONNECTOR_POLL_HPD;
104
105 ret = drm_connector_init(rcdu->ddev, connector, &connector_funcs,
106 DRM_MODE_CONNECTOR_HDMIA);
107 if (ret < 0)
108 return ret;
109
110 drm_connector_helper_add(connector, &connector_helper_funcs);
111 ret = drm_connector_register(connector);
112 if (ret < 0)
113 return ret;
114
115 connector->dpms = DRM_MODE_DPMS_OFF;
116 drm_object_property_set_value(&connector->base,
117 rcdu->ddev->mode_config.dpms_property, DRM_MODE_DPMS_OFF);
118
119 ret = drm_mode_connector_attach_encoder(connector, encoder);
120 if (ret < 0)
121 return ret;
122
123 rcon->encoder = renc;
124
125 return 0;
126 }
127