1/*
  2 * rcar_du_lvdscon.c  --  R-Car Display Unit LVDS Connector
  3 *
  4 * Copyright (C) 2013 Renesas 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_crtc.h>
 16#include <drm/drm_crtc_helper.h>
 17
 18#include "rcar_du_drv.h"
 19#include "rcar_du_encoder.h"
 20#include "rcar_du_kms.h"
 21#include "rcar_du_lvdscon.h"
 22
 23struct rcar_du_lvds_connector {
 24	struct rcar_du_connector connector;
 25
 26	const struct rcar_du_panel_data *panel;
 27};
 28
 29#define to_rcar_lvds_connector(c) \
 30	container_of(c, struct rcar_du_lvds_connector, connector.connector)
 31
 32static int rcar_du_lvds_connector_get_modes(struct drm_connector *connector)
 33{
 34	struct rcar_du_lvds_connector *lvdscon =
 35		to_rcar_lvds_connector(connector);
 36	struct drm_display_mode *mode;
 37
 38	mode = drm_mode_create(connector->dev);
 39	if (mode == NULL)
 40		return 0;
 41
 42	mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER;
 43	mode->clock = lvdscon->panel->mode.clock;
 44	mode->hdisplay = lvdscon->panel->mode.hdisplay;
 45	mode->hsync_start = lvdscon->panel->mode.hsync_start;
 46	mode->hsync_end = lvdscon->panel->mode.hsync_end;
 47	mode->htotal = lvdscon->panel->mode.htotal;
 48	mode->vdisplay = lvdscon->panel->mode.vdisplay;
 49	mode->vsync_start = lvdscon->panel->mode.vsync_start;
 50	mode->vsync_end = lvdscon->panel->mode.vsync_end;
 51	mode->vtotal = lvdscon->panel->mode.vtotal;
 52	mode->flags = lvdscon->panel->mode.flags;
 53
 54	drm_mode_set_name(mode);
 55	drm_mode_probed_add(connector, mode);
 56
 57	return 1;
 58}
 59
 60static int rcar_du_lvds_connector_mode_valid(struct drm_connector *connector,
 61					    struct drm_display_mode *mode)
 62{
 63	return MODE_OK;
 64}
 65
 66static const struct drm_connector_helper_funcs connector_helper_funcs = {
 67	.get_modes = rcar_du_lvds_connector_get_modes,
 68	.mode_valid = rcar_du_lvds_connector_mode_valid,
 69	.best_encoder = rcar_du_connector_best_encoder,
 70};
 71
 72static void rcar_du_lvds_connector_destroy(struct drm_connector *connector)
 73{
 74	drm_sysfs_connector_remove(connector);
 75	drm_connector_cleanup(connector);
 76}
 77
 78static enum drm_connector_status
 79rcar_du_lvds_connector_detect(struct drm_connector *connector, bool force)
 80{
 81	return connector_status_connected;
 82}
 83
 84static const struct drm_connector_funcs connector_funcs = {
 85	.dpms = drm_helper_connector_dpms,
 86	.detect = rcar_du_lvds_connector_detect,
 87	.fill_modes = drm_helper_probe_single_connector_modes,
 88	.destroy = rcar_du_lvds_connector_destroy,
 89};
 90
 91int rcar_du_lvds_connector_init(struct rcar_du_device *rcdu,
 92				struct rcar_du_encoder *renc,
 93				const struct rcar_du_panel_data *panel)
 94{
 95	struct rcar_du_lvds_connector *lvdscon;
 96	struct drm_connector *connector;
 97	int ret;
 98
 99	lvdscon = devm_kzalloc(rcdu->dev, sizeof(*lvdscon), GFP_KERNEL);
100	if (lvdscon == NULL)
101		return -ENOMEM;
102
103	lvdscon->panel = panel;
104
105	connector = &lvdscon->connector.connector;
106	connector->display_info.width_mm = panel->width_mm;
107	connector->display_info.height_mm = panel->height_mm;
108
109	ret = drm_connector_init(rcdu->ddev, connector, &connector_funcs,
110				 DRM_MODE_CONNECTOR_LVDS);
111	if (ret < 0)
112		return ret;
113
114	drm_connector_helper_add(connector, &connector_helper_funcs);
115	ret = drm_sysfs_connector_add(connector);
116	if (ret < 0)
117		return ret;
118
119	drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
120	drm_object_property_set_value(&connector->base,
121		rcdu->ddev->mode_config.dpms_property, DRM_MODE_DPMS_OFF);
122
123	ret = drm_mode_connector_attach_encoder(connector, &renc->encoder);
124	if (ret < 0)
125		return ret;
126
127	connector->encoder = &renc->encoder;
128	lvdscon->connector.encoder = renc;
129
130	return 0;
131}