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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2015 Texas Instruments
* Author: Jyri Sarha <jsarha@ti.com>
*/
#include <linux/of_graph.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_bridge.h>
#include <drm/drm_bridge_connector.h>
#include <drm/drm_of.h>
#include <drm/drm_simple_kms_helper.h>
#include "tilcdc_drv.h"
#include "tilcdc_encoder.h"
static
int tilcdc_attach_bridge(struct drm_device *ddev, struct drm_bridge *bridge)
{
struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(ddev);
struct drm_connector *connector;
int ret;
priv->encoder->base.possible_crtcs = BIT(0);
ret = drm_bridge_attach(&priv->encoder->base, bridge, NULL,
DRM_BRIDGE_ATTACH_NO_CONNECTOR);
if (ret)
return ret;
connector = drm_bridge_connector_init(ddev, &priv->encoder->base);
if (IS_ERR(connector)) {
drm_err(ddev, "bridge_connector create failed\n");
return PTR_ERR(connector);
}
ret = drm_connector_attach_encoder(connector, &priv->encoder->base);
if (ret) {
drm_err(ddev, "attaching encoder to connector failed\n");
return ret;
}
priv->connector = connector;
return 0;
}
int tilcdc_encoder_create(struct drm_device *ddev)
{
struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(ddev);
struct tilcdc_encoder *encoder;
struct drm_bridge *bridge;
bridge = devm_drm_of_get_bridge(ddev->dev, ddev->dev->of_node, 0, 0);
if (PTR_ERR(bridge) == -ENODEV)
return 0;
else if (IS_ERR(bridge))
return PTR_ERR(bridge);
encoder = drmm_simple_encoder_alloc(ddev, struct tilcdc_encoder,
base, DRM_MODE_ENCODER_NONE);
if (IS_ERR(encoder)) {
drm_err(ddev, "drm_encoder_init() failed %pe\n", encoder);
return PTR_ERR(encoder);
}
priv->encoder = encoder;
return tilcdc_attach_bridge(ddev, bridge);
}
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