1 files changed, 133 insertions, 0 deletions
diff --git a/kms++/src/atomicreq.cpp b/kms++/src/atomicreq.cpp
new file mode 100644
index 0000000..1ef4f7d
--- /dev/null
+++ b/kms++/src/atomicreq.cpp
@@ -0,0 +1,133 @@
+#include <cassert>
+#include <stdexcept>
+
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+
+#include <kms++/kms++.h>
+
+#ifndef DRM_CLIENT_CAP_ATOMIC
+
+#define DRM_MODE_ATOMIC_TEST_ONLY 0
+#define DRM_MODE_ATOMIC_NONBLOCK 0
+
+struct _drmModeAtomicReq;
+typedef struct _drmModeAtomicReq* drmModeAtomicReqPtr;
+
+static inline drmModeAtomicReqPtr drmModeAtomicAlloc()
+{
+	return 0;
+}
+static inline void drmModeAtomicFree(drmModeAtomicReqPtr)
+{
+}
+static inline int drmModeAtomicAddProperty(drmModeAtomicReqPtr, uint32_t, uint32_t, uint64_t)
+{
+	return 0;
+}
+static inline int drmModeAtomicCommit(int, drmModeAtomicReqPtr, int, void*)
+{
+	return 0;
+}
+
+#endif // DRM_CLIENT_CAP_ATOMIC
+
+using namespace std;
+
+namespace kms
+{
+AtomicReq::AtomicReq(Card& card)
+	: m_card(card)
+{
+	assert(card.has_atomic());
+	m_req = drmModeAtomicAlloc();
+}
+
+AtomicReq::~AtomicReq()
+{
+	drmModeAtomicFree(m_req);
+}
+
+void AtomicReq::add(uint32_t ob_id, uint32_t prop_id, uint64_t value)
+{
+	int r = drmModeAtomicAddProperty(m_req, ob_id, prop_id, value);
+	if (r <= 0)
+		throw std::invalid_argument("foo");
+}
+
+void AtomicReq::add(DrmPropObject* ob, Property* prop, uint64_t value)
+{
+	add(ob->id(), prop->id(), value);
+}
+
+void AtomicReq::add(kms::DrmPropObject* ob, const string& prop, uint64_t value)
+{
+	Property* p = ob->get_prop(prop);
+
+	if (!p)
+		throw runtime_error("Property not found");
+
+	add(ob, p, value);
+}
+
+void AtomicReq::add(kms::DrmPropObject* ob, const map<string, uint64_t>& values)
+{
+	for (const auto& kvp : values)
+		add(ob, kvp.first, kvp.second);
+}
+
+void AtomicReq::add_display(Connector* conn, Crtc* crtc, Blob* videomode, Plane* primary, Framebuffer* fb)
+{
+	add(conn, {
+			  { "CRTC_ID", crtc->id() },
+		  });
+
+	add(crtc, {
+			  { "ACTIVE", 1 },
+			  { "MODE_ID", videomode->id() },
+		  });
+
+	add(primary, {
+			     { "FB_ID", fb->id() },
+			     { "CRTC_ID", crtc->id() },
+			     { "SRC_X", 0 << 16 },
+			     { "SRC_Y", 0 << 16 },
+			     { "SRC_W", fb->width() << 16 },
+			     { "SRC_H", fb->height() << 16 },
+			     { "CRTC_X", 0 },
+			     { "CRTC_Y", 0 },
+			     { "CRTC_W", fb->width() },
+			     { "CRTC_H", fb->height() },
+		     });
+}
+
+int AtomicReq::test(bool allow_modeset)
+{
+	uint32_t flags = DRM_MODE_ATOMIC_TEST_ONLY;
+
+	if (allow_modeset)
+		flags |= DRM_MODE_ATOMIC_ALLOW_MODESET;
+
+	return drmModeAtomicCommit(m_card.fd(), m_req, flags, 0);
+}
+
+int AtomicReq::commit(void* data, bool allow_modeset)
+{
+	uint32_t flags = DRM_MODE_PAGE_FLIP_EVENT | DRM_MODE_ATOMIC_NONBLOCK;
+
+	if (allow_modeset)
+		flags |= DRM_MODE_ATOMIC_ALLOW_MODESET;
+
+	return drmModeAtomicCommit(m_card.fd(), m_req, flags, data);
+}
+
+int AtomicReq::commit_sync(bool allow_modeset)
+{
+	uint32_t flags = 0;
+
+	if (allow_modeset)
+		flags |= DRM_MODE_ATOMIC_ALLOW_MODESET;
+
+	return drmModeAtomicCommit(m_card.fd(), m_req, flags, 0);
+}
+} // namespace kms