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drm: clearer flow when rescanning connectors (#113)

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* consolidates into checkOutput for clearer flow when rescanning connectors

* add error log
This commit is contained in:
Ikalco 2024-12-07 10:53:24 -06:00 committed by GitHub
parent 7dea26bba0
commit 1af9816244
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GPG key ID: B5690EEEBB952194
2 changed files with 52 additions and 33 deletions
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3
include/aquamarine/backend/DRM.hpp
View file

@ -375,9 +375,10 @@ namespace Aquamarine {
bool initMgpu();
bool grabFormats();
bool shouldBlit();
void scanConnectors(bool allowConnect = true);
void scanConnectors();
void scanLeases();
void restoreAfterVT();
void recheckOutputs();
void recheckCRTCs();
void buildGlFormats(const std::vector<SGLFormat>& fmts);

82
src/backend/drm/DRM.cpp
View file

@ -243,9 +243,7 @@ std::vector<SP<CDRMBackend>> Aquamarine::CDRMBackend::attempt(SP<CBackend> backe
drmBackend->grabFormats();
drmBackend->scanConnectors(false);
drmBackend->recheckCRTCs();
drmBackend->recheckOutputs();
if (!newPrimary) {
backend->log(AQ_LOG_DEBUG, std::format("drm: gpu {} becomes primary drm", gpu->path));
@ -278,8 +276,7 @@ bool Aquamarine::CDRMBackend::sessionActive() {
void Aquamarine::CDRMBackend::restoreAfterVT() {
backend->log(AQ_LOG_DEBUG, "drm: Restoring after VT switch");
scanConnectors(false);
recheckCRTCs();
recheckOutputs();
backend->log(AQ_LOG_DEBUG, "drm: Rescanned connectors");
@ -617,21 +614,11 @@ void Aquamarine::CDRMBackend::recheckCRTCs() {
backend->log(AQ_LOG_DEBUG, std::format("drm: Connector {} is not connected{}", c->szName, c->crtc ? std::format(", removing old crtc {}", c->crtc->id) : ""));
}
// if any connectors get a crtc and are connected, we need to rescan to assign them outputs.
bool rescan = false;
for (auto const& c : changed) {
if (!c->output && c->status == DRM_MODE_CONNECTED) {
rescan = true;
continue;
}
// tell the user to re-assign a valid mode etc
if (c->output)
c->output->events.state.emit(IOutput::SStateEvent{});
// tell the user to re-assign a valid mode etc, if needed
for (auto const& conn : changed) {
if (conn->status != DRM_MODE_CONNECTED && conn->output)
conn->output->events.state.emit(IOutput::SStateEvent{});
}
backend->log(AQ_LOG_DEBUG, "drm: rescanning after realloc");
scanConnectors();
}
bool Aquamarine::CDRMBackend::grabFormats() {
@ -662,8 +649,7 @@ bool Aquamarine::CDRMBackend::registerGPU(SP<CSessionDevice> gpu_, SP<CDRMBacken
auto E = std::any_cast<CSessionDevice::SChangeEvent>(d);
if (E.type == CSessionDevice::AQ_SESSION_EVENT_CHANGE_HOTPLUG) {
backend->log(AQ_LOG_DEBUG, std::format("drm: Got a hotplug event for {}", gpuName));
scanConnectors(false);
recheckCRTCs();
recheckOutputs();
} else if (E.type == CSessionDevice::AQ_SESSION_EVENT_CHANGE_LEASE) {
backend->log(AQ_LOG_DEBUG, std::format("drm: Got a lease event for {}", gpuName));
scanLeases();
@ -680,7 +666,39 @@ eBackendType Aquamarine::CDRMBackend::type() {
return eBackendType::AQ_BACKEND_DRM;
}
void Aquamarine::CDRMBackend::scanConnectors(bool allowConnect) {
void Aquamarine::CDRMBackend::recheckOutputs() {
scanConnectors();
// disconnect now to possibly free up crtcs
for (const auto& conn : connectors) {
if (conn->status != DRM_MODE_CONNECTED && conn->output) {
backend->log(AQ_LOG_DEBUG, std::format("drm: Connector {} disconnected", conn->szName));
conn->disconnect();
}
}
recheckCRTCs();
// now that crtcs are assigned, connect outputs
for (const auto& conn : connectors) {
if (conn->status == DRM_MODE_CONNECTED && !conn->output) {
backend->log(AQ_LOG_DEBUG, std::format("drm: Connector {} connected", conn->szName));
auto drmConn = drmModeGetConnector(gpu->fd, conn->id);
// ??? was valid 5 sec ago...
if (!drmConn) {
backend->log(AQ_LOG_ERROR, std::format("drm: Connector {} couldn't be connected, drm connector id is no longer valid??", conn->szName));
continue;
}
conn->connect(drmConn);
drmModeFreeConnector(drmConn);
}
}
}
void Aquamarine::CDRMBackend::scanConnectors() {
backend->log(AQ_LOG_DEBUG, std::format("drm: Scanning connectors for {}", gpu->path));
auto resources = drmModeGetResources(gpu->fd);
@ -726,19 +744,19 @@ void Aquamarine::CDRMBackend::scanConnectors(bool allowConnect) {
backend->log(AQ_LOG_DEBUG, std::format("drm: Connector {} connection state: {}", connectorID, (int)drmConn->connection));
if (allowConnect) {
if (conn->status == DRM_MODE_CONNECTED && !conn->output) {
backend->log(AQ_LOG_DEBUG, std::format("drm: Connector {} connected", conn->szName));
conn->connect(drmConn);
} else if (conn->status != DRM_MODE_CONNECTED && conn->output) {
backend->log(AQ_LOG_DEBUG, std::format("drm: Connector {} disconnected", conn->szName));
conn->disconnect();
}
}
drmModeFreeConnector(drmConn);
}
// cleanup hot unplugged connectors
std::erase_if(connectors, [resources](const auto& conn) {
for (size_t i = 0; i < resources->count_connectors; ++i) {
if (resources->connectors[i] == conn->id)
return false;
}
return true;
});
drmModeFreeResources(resources);
}