forked from Minki/linux
2d60762ade
As HDMI support hotplug detection, enable HPD-based poll on HDMI connectors. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
123 lines
3.6 KiB
C
123 lines
3.6 KiB
C
/*
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* R-Car Display Unit HDMI Connector
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*
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* Copyright (C) 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_crtc.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/drm_encoder_slave.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_hdmicon.h"
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#include "rcar_du_kms.h"
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#define to_slave_funcs(e) (to_rcar_encoder(e)->slave.slave_funcs)
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static int rcar_du_hdmi_connector_get_modes(struct drm_connector *connector)
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{
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struct rcar_du_connector *con = to_rcar_connector(connector);
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struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(con->encoder);
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struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
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if (sfuncs->get_modes == NULL)
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return 0;
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return sfuncs->get_modes(encoder, connector);
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}
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static int rcar_du_hdmi_connector_mode_valid(struct drm_connector *connector,
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struct drm_display_mode *mode)
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{
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struct rcar_du_connector *con = to_rcar_connector(connector);
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struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(con->encoder);
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struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
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if (sfuncs->mode_valid == NULL)
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return MODE_OK;
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return sfuncs->mode_valid(encoder, mode);
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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_hdmi_connector_get_modes,
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.mode_valid = rcar_du_hdmi_connector_mode_valid,
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.best_encoder = rcar_du_connector_best_encoder,
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};
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static void rcar_du_hdmi_connector_destroy(struct drm_connector *connector)
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{
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drm_connector_unregister(connector);
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drm_connector_cleanup(connector);
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}
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static enum drm_connector_status
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rcar_du_hdmi_connector_detect(struct drm_connector *connector, bool force)
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{
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struct rcar_du_connector *con = to_rcar_connector(connector);
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struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(con->encoder);
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struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
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if (sfuncs->detect == NULL)
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return connector_status_unknown;
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return sfuncs->detect(encoder, connector);
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}
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static const struct drm_connector_funcs connector_funcs = {
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.dpms = drm_helper_connector_dpms,
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.detect = rcar_du_hdmi_connector_detect,
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.fill_modes = drm_helper_probe_single_connector_modes,
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.destroy = rcar_du_hdmi_connector_destroy,
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};
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int rcar_du_hdmi_connector_init(struct rcar_du_device *rcdu,
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struct rcar_du_encoder *renc)
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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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connector->display_info.width_mm = 0;
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connector->display_info.height_mm = 0;
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connector->polled = DRM_CONNECTOR_POLL_HPD;
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ret = drm_connector_init(rcdu->ddev, connector, &connector_funcs,
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DRM_MODE_CONNECTOR_HDMIA);
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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_connector_register(connector);
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if (ret < 0)
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return ret;
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drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
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drm_object_property_set_value(&connector->base,
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rcdu->ddev->mode_config.dpms_property, DRM_MODE_DPMS_OFF);
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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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connector->encoder = encoder;
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rcon->encoder = renc;
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return 0;
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}
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