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/*
* 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 <xf86drmMode.h>
#include <array>
#include <cerrno>
#include <cstdint>
#include <sstream>
#include "DrmDevice.h"
#include "utils/log.h"
#ifndef DRM_MODE_CONNECTOR_SPI
// NOLINTNEXTLINE(cppcoreguidelines-macro-usage)
#define DRM_MODE_CONNECTOR_SPI 19
#endif
#ifndef DRM_MODE_CONNECTOR_USB
// NOLINTNEXTLINE(cppcoreguidelines-macro-usage)
#define DRM_MODE_CONNECTOR_USB 20
#endif
namespace android {
constexpr size_t kTypesCount = 21;
static bool GetOptionalConnectorProperty(const DrmDevice &dev,
const DrmConnector &connector,
const char *prop_name,
DrmProperty *property) {
return dev.GetProperty(connector.GetId(), DRM_MODE_OBJECT_CONNECTOR,
prop_name, property) == 0;
}
static bool GetConnectorProperty(const DrmDevice &dev,
const DrmConnector &connector,
const char *prop_name, DrmProperty *property) {
if (!GetOptionalConnectorProperty(dev, connector, prop_name, property)) {
ALOGE("Could not get %s property\n", prop_name);
return false;
}
return true;
}
auto DrmConnector::CreateInstance(DrmDevice &dev, uint32_t connector_id,
uint32_t index)
-> std::unique_ptr<DrmConnector> {
auto conn = MakeDrmModeConnectorUnique(*dev.GetFd(), connector_id);
if (!conn) {
ALOGE("Failed to get connector %d", connector_id);
return {};
}
auto c = std::unique_ptr<DrmConnector>(
new DrmConnector(std::move(conn), &dev, index));
if (!GetConnectorProperty(dev, *c, "DPMS", &c->dpms_property_) ||
!GetConnectorProperty(dev, *c, "CRTC_ID", &c->crtc_id_property_)) {
return {};
}
c->UpdateEdidProperty();
if (c->IsWriteback() &&
(!GetConnectorProperty(dev, *c, "WRITEBACK_PIXEL_FORMATS",
&c->writeback_pixel_formats_) ||
!GetConnectorProperty(dev, *c, "WRITEBACK_FB_ID",
&c->writeback_fb_id_) ||
!GetConnectorProperty(dev, *c, "WRITEBACK_OUT_FENCE_PTR",
&c->writeback_out_fence_))) {
return {};
}
return c;
}
int DrmConnector::UpdateEdidProperty() {
return GetOptionalConnectorProperty(*drm_, *this, "EDID", &edid_property_)
? 0
: -EINVAL;
}
auto DrmConnector::GetEdidBlob() -> DrmModePropertyBlobUnique {
auto ret = UpdateEdidProperty();
if (ret != 0) {
return {};
}
auto blob_id = GetEdidProperty().GetValue();
if (!blob_id) {
return {};
}
return MakeDrmModePropertyBlobUnique(*drm_->GetFd(), *blob_id);
}
bool DrmConnector::IsInternal() const {
auto type = connector_->connector_type;
return type == DRM_MODE_CONNECTOR_LVDS || type == DRM_MODE_CONNECTOR_eDP ||
type == DRM_MODE_CONNECTOR_DSI || type == DRM_MODE_CONNECTOR_VIRTUAL ||
type == DRM_MODE_CONNECTOR_DPI || type == DRM_MODE_CONNECTOR_SPI;
}
bool DrmConnector::IsExternal() const {
auto type = connector_->connector_type;
return type == DRM_MODE_CONNECTOR_HDMIA ||
type == DRM_MODE_CONNECTOR_DisplayPort ||
type == DRM_MODE_CONNECTOR_DVID || type == DRM_MODE_CONNECTOR_DVII ||
type == DRM_MODE_CONNECTOR_VGA || type == DRM_MODE_CONNECTOR_USB;
}
bool DrmConnector::IsWriteback() const {
#ifdef DRM_MODE_CONNECTOR_WRITEBACK
return connector_->connector_type == DRM_MODE_CONNECTOR_WRITEBACK;
#else
return false;
#endif
}
bool DrmConnector::IsValid() const {
return IsInternal() || IsExternal() || IsWriteback();
}
std::string DrmConnector::GetName() const {
constexpr std::array<const char *, kTypesCount> kNames =
{"None", "VGA", "DVI-I", "DVI-D", "DVI-A", "Composite",
"SVIDEO", "LVDS", "Component", "DIN", "DP", "HDMI-A",
"HDMI-B", "TV", "eDP", "Virtual", "DSI", "DPI",
"Writeback", "SPI", "USB"};
if (connector_->connector_type < kTypesCount) {
std::ostringstream name_buf;
name_buf << kNames[connector_->connector_type] << "-"
<< connector_->connector_type_id;
return name_buf.str();
}
ALOGE("Unknown type in connector %d, could not make his name", GetId());
return "None";
}
int DrmConnector::UpdateModes() {
auto conn = MakeDrmModeConnectorUnique(*drm_->GetFd(), GetId());
if (!conn) {
ALOGE("Failed to get connector %d", GetId());
return -ENODEV;
}
connector_ = std::move(conn);
modes_.clear();
for (int i = 0; i < connector_->count_modes; ++i) {
bool exists = false;
for (const DrmMode &mode : modes_) {
if (mode == connector_->modes[i]) {
exists = true;
break;
}
}
if (!exists) {
modes_.emplace_back(&connector_->modes[i]);
}
}
return 0;
}
} // namespace android
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