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
58 static enum drm_connector_status
rcar_du_hdmi_connector_detect(struct drm_connector * connector,bool force)59 rcar_du_hdmi_connector_detect(struct drm_connector *connector, bool force)
60 {
61 struct rcar_du_connector *con = to_rcar_connector(connector);
62 struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(con->encoder);
63 struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
64
65 if (sfuncs->detect == NULL)
66 return connector_status_unknown;
67
68 return sfuncs->detect(encoder, connector);
69 }
70
71 static const struct drm_connector_funcs connector_funcs = {
72 .dpms = drm_atomic_helper_connector_dpms,
73 .reset = drm_atomic_helper_connector_reset,
74 .detect = rcar_du_hdmi_connector_detect,
75 .fill_modes = drm_helper_probe_single_connector_modes,
76 .destroy = drm_connector_cleanup,
77 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
78 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
79 };
80
rcar_du_hdmi_connector_init(struct rcar_du_device * rcdu,struct rcar_du_encoder * renc)81 int rcar_du_hdmi_connector_init(struct rcar_du_device *rcdu,
82 struct rcar_du_encoder *renc)
83 {
84 struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(renc);
85 struct rcar_du_connector *rcon;
86 struct drm_connector *connector;
87 int ret;
88
89 rcon = devm_kzalloc(rcdu->dev, sizeof(*rcon), GFP_KERNEL);
90 if (rcon == NULL)
91 return -ENOMEM;
92
93 connector = &rcon->connector;
94 connector->display_info.width_mm = 0;
95 connector->display_info.height_mm = 0;
96 connector->interlace_allowed = true;
97 connector->polled = DRM_CONNECTOR_POLL_HPD;
98
99 ret = drm_connector_init(rcdu->ddev, connector, &connector_funcs,
100 DRM_MODE_CONNECTOR_HDMIA);
101 if (ret < 0)
102 return ret;
103
104 drm_connector_helper_add(connector, &connector_helper_funcs);
105
106 connector->dpms = DRM_MODE_DPMS_OFF;
107 drm_object_property_set_value(&connector->base,
108 rcdu->ddev->mode_config.dpms_property, DRM_MODE_DPMS_OFF);
109
110 ret = drm_mode_connector_attach_encoder(connector, encoder);
111 if (ret < 0)
112 return ret;
113
114 rcon->encoder = renc;
115
116 return 0;
117 }
118