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// SPDX-License-Identifier: GPL-2.0-only
/*
* ARC PGU DRM driver.
*
* Copyright (C) 2016 Synopsys, Inc. (www.synopsys.com)
*/
#include <drm/drm_bridge.h>
#include <drm/drm_crtc.h>
#include <drm/drm_encoder.h>
#include <drm/drm_device.h>
#include "arcpgu.h"
static struct drm_encoder_funcs arcpgu_drm_encoder_funcs = {
.destroy = drm_encoder_cleanup,
};
int arcpgu_drm_hdmi_init(struct drm_device *drm, struct device_node *np)
{
struct drm_encoder *encoder;
struct drm_bridge *bridge;
int ret = 0;
encoder = devm_kzalloc(drm->dev, sizeof(*encoder), GFP_KERNEL);
if (encoder == NULL)
return -ENOMEM;
/* Locate drm bridge from the hdmi encoder DT node */
bridge = of_drm_find_bridge(np);
if (!bridge)
return -EPROBE_DEFER;
encoder->possible_crtcs = 1;
encoder->possible_clones = 0;
ret = drm_encoder_init(drm, encoder, &arcpgu_drm_encoder_funcs,
DRM_MODE_ENCODER_TMDS, NULL);
if (ret)
return ret;
/* Link drm_bridge to encoder */
ret = drm_bridge_attach(encoder, bridge, NULL);
if (ret)
drm_encoder_cleanup(encoder);
return ret;
}
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