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The LCD controller is composed of Frame Compression Processor (FCPVD), Video Signal Processor (VSPD), and Display Unit (DU). It has DPI/DSI interfaces and supports a maximum resolution of 1080p along with 2 RPFs to support the blending of two picture layers and raster operations (ROPs). The DU module is connected to VSPD. Add RZ/G2L DU support for RZ/G2L alike SoCs. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20240218164840.57662-4-biju.das.jz@bp.renesas.com Signed-off-by: Maxime Ripard <mripard@kernel.org>
73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* RZ/G2L Display Unit Encoder
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*
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* Copyright (C) 2023 Renesas Electronics Corporation
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*
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* Based on rcar_du_encoder.c
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*/
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#include <linux/export.h>
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#include <linux/of.h>
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#include <drm/drm_bridge.h>
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#include <drm/drm_bridge_connector.h>
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#include <drm/drm_panel.h>
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#include "rzg2l_du_drv.h"
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#include "rzg2l_du_encoder.h"
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/* -----------------------------------------------------------------------------
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* Encoder
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*/
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static const struct drm_encoder_funcs rzg2l_du_encoder_funcs = {
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};
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int rzg2l_du_encoder_init(struct rzg2l_du_device *rcdu,
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enum rzg2l_du_output output,
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struct device_node *enc_node)
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{
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struct rzg2l_du_encoder *renc;
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struct drm_connector *connector;
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struct drm_bridge *bridge;
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int ret;
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/* Locate the DRM bridge from the DT node. */
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bridge = of_drm_find_bridge(enc_node);
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if (!bridge)
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return -EPROBE_DEFER;
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dev_dbg(rcdu->dev, "initializing encoder %pOF for output %s\n",
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enc_node, rzg2l_du_output_name(output));
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renc = drmm_encoder_alloc(&rcdu->ddev, struct rzg2l_du_encoder, base,
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&rzg2l_du_encoder_funcs, DRM_MODE_ENCODER_NONE,
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NULL);
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if (IS_ERR(renc))
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return PTR_ERR(renc);
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renc->output = output;
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/* Attach the bridge to the encoder. */
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ret = drm_bridge_attach(&renc->base, bridge, NULL,
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DRM_BRIDGE_ATTACH_NO_CONNECTOR);
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if (ret) {
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dev_err(rcdu->dev,
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"failed to attach bridge %pOF for output %s (%d)\n",
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bridge->of_node, rzg2l_du_output_name(output), ret);
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return ret;
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}
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/* Create the connector for the chain of bridges. */
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connector = drm_bridge_connector_init(&rcdu->ddev, &renc->base);
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if (IS_ERR(connector)) {
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dev_err(rcdu->dev,
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"failed to created connector for output %s (%ld)\n",
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rzg2l_du_output_name(output), PTR_ERR(connector));
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return PTR_ERR(connector);
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}
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return drm_connector_attach_encoder(connector, &renc->base);
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}
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