2 * rcar_du_lvdscon.c -- R-Car Display Unit LVDS Connector
4 * Copyright (C) 2013-2014 Renesas Electronics Corporation
6 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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.
15 #include <drm/drm_atomic_helper.h>
16 #include <drm/drm_crtc.h>
17 #include <drm/drm_crtc_helper.h>
19 #include <video/display_timing.h>
20 #include <video/of_display_timing.h>
21 #include <video/videomode.h>
23 #include "rcar_du_drv.h"
24 #include "rcar_du_encoder.h"
25 #include "rcar_du_kms.h"
26 #include "rcar_du_lvdscon.h"
28 struct rcar_du_lvds_connector {
29 struct rcar_du_connector connector;
32 unsigned int width_mm; /* Panel width in mm */
33 unsigned int height_mm; /* Panel height in mm */
34 struct videomode mode;
38 #define to_rcar_lvds_connector(c) \
39 container_of(c, struct rcar_du_lvds_connector, connector.connector)
41 static int rcar_du_lvds_connector_get_modes(struct drm_connector *connector)
43 struct rcar_du_lvds_connector *lvdscon =
44 to_rcar_lvds_connector(connector);
45 struct drm_display_mode *mode;
47 mode = drm_mode_create(connector->dev);
51 mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER;
53 drm_display_mode_from_videomode(&lvdscon->panel.mode, mode);
55 drm_mode_probed_add(connector, mode);
60 static const struct drm_connector_helper_funcs connector_helper_funcs = {
61 .get_modes = rcar_du_lvds_connector_get_modes,
64 static enum drm_connector_status
65 rcar_du_lvds_connector_detect(struct drm_connector *connector, bool force)
67 return connector_status_connected;
70 static const struct drm_connector_funcs connector_funcs = {
71 .dpms = drm_atomic_helper_connector_dpms,
72 .reset = drm_atomic_helper_connector_reset,
73 .detect = rcar_du_lvds_connector_detect,
74 .fill_modes = drm_helper_probe_single_connector_modes,
75 .destroy = drm_connector_cleanup,
76 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
77 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
80 int rcar_du_lvds_connector_init(struct rcar_du_device *rcdu,
81 struct rcar_du_encoder *renc,
82 /* TODO const */ struct device_node *np)
84 struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(renc);
85 struct rcar_du_lvds_connector *lvdscon;
86 struct drm_connector *connector;
87 struct display_timing timing;
90 lvdscon = devm_kzalloc(rcdu->dev, sizeof(*lvdscon), GFP_KERNEL);
94 ret = of_get_display_timing(np, "panel-timing", &timing);
98 videomode_from_timing(&timing, &lvdscon->panel.mode);
100 of_property_read_u32(np, "width-mm", &lvdscon->panel.width_mm);
101 of_property_read_u32(np, "height-mm", &lvdscon->panel.height_mm);
103 connector = &lvdscon->connector.connector;
104 connector->display_info.width_mm = lvdscon->panel.width_mm;
105 connector->display_info.height_mm = lvdscon->panel.height_mm;
107 ret = drm_connector_init(rcdu->ddev, connector, &connector_funcs,
108 DRM_MODE_CONNECTOR_LVDS);
112 drm_connector_helper_add(connector, &connector_helper_funcs);
114 connector->dpms = DRM_MODE_DPMS_OFF;
115 drm_object_property_set_value(&connector->base,
116 rcdu->ddev->mode_config.dpms_property, DRM_MODE_DPMS_OFF);
118 ret = drm_mode_connector_attach_encoder(connector, encoder);
122 lvdscon->connector.encoder = renc;