Release 4.7 drivers/gpu/drm/rcar-du/rcar_du_hdmicon.c
/*
* R-Car Display Unit HDMI Connector
*
* Copyright (C) 2014 Renesas Electronics Corporation
*
* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <drm/drmP.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_encoder_slave.h>
#include "rcar_du_drv.h"
#include "rcar_du_encoder.h"
#include "rcar_du_hdmicon.h"
#include "rcar_du_kms.h"
#define to_slave_funcs(e) (to_rcar_encoder(e)->slave.slave_funcs)
static int rcar_du_hdmi_connector_get_modes(struct drm_connector *connector)
{
struct rcar_du_connector *con = to_rcar_connector(connector);
struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(con->encoder);
const struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
if (sfuncs->get_modes == NULL)
return 0;
return sfuncs->get_modes(encoder, connector);
}
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static int rcar_du_hdmi_connector_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
struct rcar_du_connector *con = to_rcar_connector(connector);
struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(con->encoder);
const struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
if (sfuncs->mode_valid == NULL)
return MODE_OK;
return sfuncs->mode_valid(encoder, mode);
}
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static const struct drm_connector_helper_funcs connector_helper_funcs = {
.get_modes = rcar_du_hdmi_connector_get_modes,
.mode_valid = rcar_du_hdmi_connector_mode_valid,
.best_encoder = rcar_du_connector_best_encoder,
};
static enum drm_connector_status
rcar_du_hdmi_connector_detect(struct drm_connector *connector, bool force)
{
struct rcar_du_connector *con = to_rcar_connector(connector);
struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(con->encoder);
const struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
if (sfuncs->detect == NULL)
return connector_status_unknown;
return sfuncs->detect(encoder, connector);
}
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static const struct drm_connector_funcs connector_funcs = {
.dpms = drm_atomic_helper_connector_dpms,
.reset = drm_atomic_helper_connector_reset,
.detect = rcar_du_hdmi_connector_detect,
.fill_modes = drm_helper_probe_single_connector_modes,
.destroy = drm_connector_cleanup,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
int rcar_du_hdmi_connector_init(struct rcar_du_device *rcdu,
struct rcar_du_encoder *renc)
{
struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(renc);
struct rcar_du_connector *rcon;
struct drm_connector *connector;
int ret;
rcon = devm_kzalloc(rcdu->dev, sizeof(*rcon), GFP_KERNEL);
if (rcon == NULL)
return -ENOMEM;
connector = &rcon->connector;
connector->display_info.width_mm = 0;
connector->display_info.height_mm = 0;
connector->interlace_allowed = true;
connector->polled = DRM_CONNECTOR_POLL_HPD;
ret = drm_connector_init(rcdu->ddev, connector, &connector_funcs,
DRM_MODE_CONNECTOR_HDMIA);
if (ret < 0)
return ret;
drm_connector_helper_add(connector, &connector_helper_funcs);
connector->dpms = DRM_MODE_DPMS_OFF;
drm_object_property_set_value(&connector->base,
rcdu->ddev->mode_config.dpms_property, DRM_MODE_DPMS_OFF);
ret = drm_mode_connector_attach_encoder(connector, encoder);
if (ret < 0)
return ret;
rcon->encoder = renc;
return 0;
}
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