1 files changed, 92 insertions, 0 deletions
diff --git a/kms++/src/atomicreq.cpp b/kms++/src/atomicreq.cpp
new file mode 100644
index 0000000..01934ae
--- /dev/null
+++ b/kms++/src/atomicreq.cpp
@@ -0,0 +1,92 @@
+#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(DrmObject *ob, Property *prop, uint64_t value)
+{
+	add(ob->id(), prop->id(), value);
+}
+
+void AtomicReq::add(DrmObject* ob, const string& prop, uint64_t value)
+{
+	add(ob, m_card.get_prop(prop), value);
+}
+
+void AtomicReq::add(DrmObject* ob, const map<string, uint64_t>& values)
+{
+	for(const auto& kvp : values)
+		add(ob, kvp.first, kvp.second);
+}
+
+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);
+}
+}