mirror of https://gitee.com/openkylin/linux.git
94 lines
2.5 KiB
C
94 lines
2.5 KiB
C
/*
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* rcar_du_lvdscon.c -- R-Car Display Unit LVDS Connector
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*
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* Copyright (C) 2013-2014 Renesas Electronics Corporation
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*
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* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <drm/drmP.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/drm_panel.h>
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#include <video/display_timing.h>
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#include <video/of_display_timing.h>
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#include <video/videomode.h>
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#include "rcar_du_drv.h"
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#include "rcar_du_encoder.h"
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#include "rcar_du_kms.h"
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#include "rcar_du_lvdscon.h"
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static int rcar_du_lvds_connector_get_modes(struct drm_connector *connector)
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{
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struct rcar_du_connector *rcon = to_rcar_connector(connector);
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return drm_panel_get_modes(rcon->panel);
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}
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static const struct drm_connector_helper_funcs connector_helper_funcs = {
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.get_modes = rcar_du_lvds_connector_get_modes,
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};
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static void rcar_du_lvds_connector_destroy(struct drm_connector *connector)
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{
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struct rcar_du_connector *rcon = to_rcar_connector(connector);
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drm_panel_detach(rcon->panel);
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drm_connector_cleanup(connector);
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}
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static const struct drm_connector_funcs connector_funcs = {
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.reset = drm_atomic_helper_connector_reset,
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.fill_modes = drm_helper_probe_single_connector_modes,
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.destroy = rcar_du_lvds_connector_destroy,
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.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
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.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
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};
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int rcar_du_lvds_connector_init(struct rcar_du_device *rcdu,
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struct rcar_du_encoder *renc,
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const struct device_node *np)
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{
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struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(renc);
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struct rcar_du_connector *rcon;
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struct drm_connector *connector;
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int ret;
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rcon = devm_kzalloc(rcdu->dev, sizeof(*rcon), GFP_KERNEL);
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if (rcon == NULL)
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return -ENOMEM;
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connector = &rcon->connector;
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rcon->panel = of_drm_find_panel(np);
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if (!rcon->panel)
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return -EPROBE_DEFER;
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ret = drm_connector_init(rcdu->ddev, connector, &connector_funcs,
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DRM_MODE_CONNECTOR_LVDS);
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if (ret < 0)
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return ret;
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drm_connector_helper_add(connector, &connector_helper_funcs);
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ret = drm_mode_connector_attach_encoder(connector, encoder);
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if (ret < 0)
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return ret;
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ret = drm_panel_attach(rcon->panel, connector);
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if (ret < 0)
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return ret;
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rcon->encoder = renc;
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return 0;
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}
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