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      1 /*
      2  * Copyright (C) 2015 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #define LOG_TAG "hwc-drm-connector"
     18 
     19 #include "drmconnector.h"
     20 #include "drmresources.h"
     21 
     22 #include <errno.h>
     23 #include <stdint.h>
     24 
     25 #include <cutils/log.h>
     26 #include <xf86drmMode.h>
     27 
     28 namespace android {
     29 
     30 DrmConnector::DrmConnector(DrmResources *drm, drmModeConnectorPtr c,
     31                            DrmEncoder *current_encoder,
     32                            std::vector<DrmEncoder *> &possible_encoders)
     33     : drm_(drm),
     34       id_(c->connector_id),
     35       encoder_(current_encoder),
     36       display_(-1),
     37       type_(c->connector_type),
     38       state_(c->connection),
     39       mm_width_(c->mmWidth),
     40       mm_height_(c->mmHeight),
     41       possible_encoders_(possible_encoders) {
     42 }
     43 
     44 int DrmConnector::Init() {
     45   int ret = drm_->GetConnectorProperty(*this, "DPMS", &dpms_property_);
     46   if (ret) {
     47     ALOGE("Could not get DPMS property\n");
     48     return ret;
     49   }
     50   ret = drm_->GetConnectorProperty(*this, "CRTC_ID", &crtc_id_property_);
     51   if (ret) {
     52     ALOGE("Could not get CRTC_ID property\n");
     53     return ret;
     54   }
     55   return 0;
     56 }
     57 
     58 uint32_t DrmConnector::id() const {
     59   return id_;
     60 }
     61 
     62 int DrmConnector::display() const {
     63   return display_;
     64 }
     65 
     66 void DrmConnector::set_display(int display) {
     67   display_ = display;
     68 }
     69 
     70 bool DrmConnector::built_in() const {
     71   return type_ == DRM_MODE_CONNECTOR_LVDS || type_ == DRM_MODE_CONNECTOR_eDP ||
     72          type_ == DRM_MODE_CONNECTOR_DSI;
     73 }
     74 
     75 int DrmConnector::UpdateModes() {
     76   int fd = drm_->fd();
     77 
     78   drmModeConnectorPtr c = drmModeGetConnector(fd, id_);
     79   if (!c) {
     80     ALOGE("Failed to get connector %d", id_);
     81     return -ENODEV;
     82   }
     83 
     84   state_ = c->connection;
     85 
     86   std::vector<DrmMode> new_modes;
     87   for (int i = 0; i < c->count_modes; ++i) {
     88     bool exists = false;
     89     for (const DrmMode &mode : modes_) {
     90       if (mode == c->modes[i]) {
     91         new_modes.push_back(mode);
     92         exists = true;
     93         break;
     94       }
     95     }
     96     if (exists)
     97       continue;
     98 
     99     DrmMode m(&c->modes[i]);
    100     m.set_id(drm_->next_mode_id());
    101     new_modes.push_back(m);
    102   }
    103   modes_.swap(new_modes);
    104   return 0;
    105 }
    106 
    107 const DrmMode &DrmConnector::active_mode() const {
    108   return active_mode_;
    109 }
    110 
    111 void DrmConnector::set_active_mode(const DrmMode &mode) {
    112   active_mode_ = mode;
    113 }
    114 
    115 const DrmProperty &DrmConnector::dpms_property() const {
    116   return dpms_property_;
    117 }
    118 
    119 const DrmProperty &DrmConnector::crtc_id_property() const {
    120   return crtc_id_property_;
    121 }
    122 
    123 DrmEncoder *DrmConnector::encoder() const {
    124   return encoder_;
    125 }
    126 
    127 void DrmConnector::set_encoder(DrmEncoder *encoder) {
    128   encoder_ = encoder;
    129 }
    130 
    131 drmModeConnection DrmConnector::state() const {
    132   return state_;
    133 }
    134 
    135 uint32_t DrmConnector::mm_width() const {
    136   return mm_width_;
    137 }
    138 
    139 uint32_t DrmConnector::mm_height() const {
    140   return mm_height_;
    141 }
    142 }
    143