1 /*
2 * rcar_du_vgacon.c -- R-Car Display Unit VGA Connector
3 *
4 * Copyright (C) 2013-2014 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
19 #include "rcar_du_drv.h"
20 #include "rcar_du_encoder.h"
21 #include "rcar_du_kms.h"
22 #include "rcar_du_vgacon.h"
23
rcar_du_vga_connector_get_modes(struct drm_connector * connector)24 static int rcar_du_vga_connector_get_modes(struct drm_connector *connector)
25 {
26 return 0;
27 }
28
29 static const struct drm_connector_helper_funcs connector_helper_funcs = {
30 .get_modes = rcar_du_vga_connector_get_modes,
31 .best_encoder = rcar_du_connector_best_encoder,
32 };
33
34 static enum drm_connector_status
rcar_du_vga_connector_detect(struct drm_connector * connector,bool force)35 rcar_du_vga_connector_detect(struct drm_connector *connector, bool force)
36 {
37 return connector_status_connected;
38 }
39
40 static const struct drm_connector_funcs connector_funcs = {
41 .dpms = drm_atomic_helper_connector_dpms,
42 .reset = drm_atomic_helper_connector_reset,
43 .detect = rcar_du_vga_connector_detect,
44 .fill_modes = drm_helper_probe_single_connector_modes,
45 .destroy = drm_connector_cleanup,
46 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
47 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
48 };
49
rcar_du_vga_connector_init(struct rcar_du_device * rcdu,struct rcar_du_encoder * renc)50 int rcar_du_vga_connector_init(struct rcar_du_device *rcdu,
51 struct rcar_du_encoder *renc)
52 {
53 struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(renc);
54 struct rcar_du_connector *rcon;
55 struct drm_connector *connector;
56 int ret;
57
58 rcon = devm_kzalloc(rcdu->dev, sizeof(*rcon), GFP_KERNEL);
59 if (rcon == NULL)
60 return -ENOMEM;
61
62 connector = &rcon->connector;
63 connector->display_info.width_mm = 0;
64 connector->display_info.height_mm = 0;
65 connector->interlace_allowed = true;
66
67 ret = drm_connector_init(rcdu->ddev, connector, &connector_funcs,
68 DRM_MODE_CONNECTOR_VGA);
69 if (ret < 0)
70 return ret;
71
72 drm_connector_helper_add(connector, &connector_helper_funcs);
73
74 connector->dpms = DRM_MODE_DPMS_OFF;
75 drm_object_property_set_value(&connector->base,
76 rcdu->ddev->mode_config.dpms_property, DRM_MODE_DPMS_OFF);
77
78 ret = drm_mode_connector_attach_encoder(connector, encoder);
79 if (ret < 0)
80 return ret;
81
82 rcon->encoder = renc;
83
84 return 0;
85 }
86