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-rw-r--r--kms++/inc/kms++/card.h2
-rw-r--r--kms++/src/card.cpp13
-rw-r--r--kms++/src/connector.cpp1
3 files changed, 16 insertions, 0 deletions
diff --git a/kms++/inc/kms++/card.h b/kms++/inc/kms++/card.h
index bf6f9bf..fc11e92 100644
--- a/kms++/inc/kms++/card.h
+++ b/kms++/inc/kms++/card.h
@@ -54,6 +54,7 @@ public:
bool has_universal_planes() const { return m_has_universal_planes; }
bool has_dumb_buffers() const { return m_has_dumb; }
bool has_kms() const;
+ bool has_writeback() const { return m_has_writeback; }
std::vector<Connector*> get_connectors() const { return m_connectors; }
std::vector<Encoder*> get_encoders() const { return m_encoders; }
@@ -92,6 +93,7 @@ private:
bool m_has_atomic;
bool m_has_universal_planes;
bool m_has_dumb;
+ bool m_has_writeback;
CardVersion m_version;
};
diff --git a/kms++/src/card.cpp b/kms++/src/card.cpp
index 935969d..6ad922a 100644
--- a/kms++/src/card.cpp
+++ b/kms++/src/card.cpp
@@ -216,6 +216,17 @@ void Card::setup()
m_has_atomic = false;
#endif
+#ifdef DRM_CLIENT_CAP_WRITEBACK_CONNECTORS
+ if (getenv("KMSXX_DISABLE_WRITEBACK_CONNECTORS") == 0) {
+ r = drmSetClientCap(m_fd, DRM_CLIENT_CAP_WRITEBACK_CONNECTORS, 1);
+ m_has_writeback = r == 0;
+ } else {
+ m_has_writeback = false;
+ }
+#else
+ m_has_writeback = false;
+#endif
+
uint64_t has_dumb;
r = drmGetCap(m_fd, DRM_CAP_DUMB_BUFFER, &has_dumb);
m_has_dumb = r == 0 && has_dumb;
@@ -315,6 +326,8 @@ void Card::restore_modes()
Connector* Card::get_first_connected_connector() const
{
for (auto c : m_connectors) {
+ if (c->connector_type() == DRM_MODE_CONNECTOR_WRITEBACK)
+ continue;
if (c->connected())
return c;
}
diff --git a/kms++/src/connector.cpp b/kms++/src/connector.cpp
index 92bab80..522851a 100644
--- a/kms++/src/connector.cpp
+++ b/kms++/src/connector.cpp
@@ -35,6 +35,7 @@ static const map<int, string> connector_names = {
{ DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
{ DRM_MODE_CONNECTOR_DSI, "DSI" },
{ DRM_MODE_CONNECTOR_DPI, "DPI" },
+ { DRM_MODE_CONNECTOR_WRITEBACK, "writeback" },
};
static const map<int, string> connection_str = {