From e789f93b241fe74cf92eed9ffb0d18b853d79fa1 Mon Sep 17 00:00:00 2001
From: Tomi Valkeinen <tomi.valkeinen@iki.fi>
Date: Fri, 2 Oct 2015 23:23:54 +0300
Subject: save & restore mode

---
 libkms++/card.cpp      |  8 ++++++++
 libkms++/card.h        |  2 ++
 libkms++/connector.cpp |  8 ++++++++
 libkms++/connector.h   |  3 +++
 libkms++/crtc.cpp      | 11 +++++++++++
 libkms++/crtc.h        |  2 ++
 6 files changed, 34 insertions(+)

(limited to 'libkms++')

diff --git a/libkms++/card.cpp b/libkms++/card.cpp
index 5f8dbd1..39a1fb6 100644
--- a/libkms++/card.cpp
+++ b/libkms++/card.cpp
@@ -107,12 +107,20 @@ Card::Card()
 
 Card::~Card()
 {
+	restore_modes();
+
 	for (auto pair : m_obmap)
 		delete pair.second;
 
 	close(m_fd);
 }
 
+void Card::restore_modes()
+{
+	for (auto conn : get_connectors())
+		conn->restore_mode();
+}
+
 template <class T> static void print_obs(const map<uint32_t, DrmObject*>& obmap)
 {
 	for (auto pair : obmap) {
diff --git a/libkms++/card.h b/libkms++/card.h
index a8db76f..ac0cba4 100644
--- a/libkms++/card.h
+++ b/libkms++/card.h
@@ -42,6 +42,8 @@ public:
 	std::vector<Pipeline> get_connected_pipelines();
 
 private:
+	void restore_modes();
+
 	std::map<uint32_t, DrmObject*> m_obmap;
 
 	int m_fd;
diff --git a/libkms++/connector.cpp b/libkms++/connector.cpp
index 8ff5a5f..06703d6 100644
--- a/libkms++/connector.cpp
+++ b/libkms++/connector.cpp
@@ -72,6 +72,14 @@ void Connector::setup()
 		if (enc)
 			m_current_crtc = enc->get_crtc();
 	}
+
+	m_saved_crtc = m_current_crtc;
+}
+
+void Connector::restore_mode()
+{
+	if (m_saved_crtc)
+		m_saved_crtc->restore_mode(this);
 }
 
 void Connector::print_short() const
diff --git a/libkms++/connector.h b/libkms++/connector.h
index 84845d5..56ac315 100644
--- a/libkms++/connector.h
+++ b/libkms++/connector.h
@@ -42,11 +42,14 @@ private:
 	~Connector();
 
 	void setup();
+	void restore_mode();
 
 	ConnectorPriv* m_priv;
 
 	std::string m_fullname;
 
 	Crtc* m_current_crtc;
+
+	Crtc* m_saved_crtc;
 };
 }
diff --git a/libkms++/crtc.cpp b/libkms++/crtc.cpp
index b0a962e..9716c97 100644
--- a/libkms++/crtc.cpp
+++ b/libkms++/crtc.cpp
@@ -39,6 +39,17 @@ void Crtc::setup()
 	}
 }
 
+void Crtc::restore_mode(Connector* conn)
+{
+	auto c = m_priv->drm_crtc;
+
+	uint32_t conns[] = { conn->id() };
+
+	drmModeSetCrtc(card().fd(), id(), c->buffer_id,
+		       c->x, c->y,
+		       conns, 1, &c->mode);
+}
+
 void Crtc::print_short() const
 {
 	auto c  = m_priv->drm_crtc;
diff --git a/libkms++/crtc.h b/libkms++/crtc.h
index d30d497..1cbf4c4 100644
--- a/libkms++/crtc.h
+++ b/libkms++/crtc.h
@@ -12,6 +12,7 @@ struct CrtcPriv;
 class Crtc : public DrmObject
 {
 	friend class Card;
+	friend class Connector;
 public:
 	void print_short() const;
 
@@ -30,6 +31,7 @@ private:
 	~Crtc();
 
 	void setup();
+	void restore_mode(Connector *conn);
 
 	CrtcPriv* m_priv;
 
-- 
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