drmconnector.cpp

/*
 * Copyright (C) 2015 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#define LOG_TAG "hwc-drm-connector"

#include "drmconnector.h"
#include "drmresources.h"

#include <errno.h>
#include <stdint.h>

#include <cutils/log.h>
#include <xf86drmMode.h>

namespace android {

DrmConnector::DrmConnector(DrmResources *drm, drmModeConnectorPtr c,
                           DrmEncoder *current_encoder,
                           std::vector<DrmEncoder *> &possible_encoders)
    : drm_(drm),
      id_(c->connector_id),
      encoder_(current_encoder),
      display_(-1),
      type_(c->connector_type),
      state_(c->connection),
      mm_width_(c->mmWidth),
      mm_height_(c->mmHeight),
      possible_encoders_(possible_encoders) {
}

DrmConnector::~DrmConnector() {
}

int DrmConnector::Init() {
  int ret = drm_->GetConnectorProperty(*this, "DPMS", &dpms_property_);
  if (ret) {
    ALOGE("Could not get DPMS property\n");
    return ret;
  }
  return 0;
}

uint32_t DrmConnector::id() const {
  return id_;
}

int DrmConnector::display() const {
  return display_;
}

void DrmConnector::set_display(int display) {
  display_ = display;
}

bool DrmConnector::built_in() const {
  return type_ == DRM_MODE_CONNECTOR_LVDS || type_ == DRM_MODE_CONNECTOR_eDP ||
         type_ == DRM_MODE_CONNECTOR_DSI;
}

int DrmConnector::UpdateModes() {
  int fd = drm_->fd();

  drmModeConnectorPtr c = drmModeGetConnector(fd, id_);
  if (!c) {
    ALOGE("Failed to get connector %d", id_);
    return -ENODEV;
  }

  std::vector<DrmMode> new_modes;
  for (int i = 0; i < c->count_modes; ++i) {
    bool exists = false;
    for (std::vector<DrmMode>::iterator iter = modes_.begin();
         iter != modes_.end(); ++iter) {
      if (*iter == c->modes[i]) {
        new_modes.push_back(*iter);
        exists = true;
        break;
      }
    }
    if (exists)
      continue;

    DrmMode m(&c->modes[i]);
    m.set_id(drm_->next_mode_id());
    new_modes.push_back(m);
  }
  modes_.swap(new_modes);
  return 0;
}

const DrmMode &DrmConnector::active_mode() const {
  return active_mode_;
}

int DrmConnector::set_active_mode(uint32_t mode_id) {
  for (std::vector<DrmMode>::const_iterator iter = modes_.begin();
       iter != modes_.end(); ++iter) {
    if (iter->id() == mode_id) {
      active_mode_ = *iter;
      return 0;
    }
  }
  return -ENOENT;
}

const DrmProperty &DrmConnector::dpms_property() const {
  return dpms_property_;
}

DrmConnector::ModeIter DrmConnector::begin_modes() const {
  return modes_.begin();
}

DrmConnector::ModeIter DrmConnector::end_modes() const {
  return modes_.end();
}

DrmEncoder *DrmConnector::encoder() const {
  return encoder_;
}

void DrmConnector::set_encoder(DrmEncoder *encoder) {
  encoder_ = encoder;
}

DrmConnector::EncoderIter DrmConnector::begin_possible_encoders() const {
  return possible_encoders_.begin();
}

DrmConnector::EncoderIter DrmConnector::end_possible_encoders() const {
  return possible_encoders_.end();
}

uint32_t DrmConnector::mm_width() const {
  return mm_width_;
}

uint32_t DrmConnector::mm_height() const {
  return mm_height_;
}
}