Add tdehwlib-daemon power management backend to TDE hardware library

3 files changed, 156 insertions, 4 deletions

diff --git a/tdecore/tdehw/hwlibdaemons/dbus/org.trinitydesktop.hardwarecontrol.conf b/tdecore/tdehw/hwlibdaemons/dbus/org.trinitydesktop.hardwarecontrol.conf
index a649b969f..f8537010f 100644
--- a/tdecore/tdehw/hwlibdaemons/dbus/org.trinitydesktop.hardwarecontrol.conf
+++ b/tdecore/tdehw/hwlibdaemons/dbus/org.trinitydesktop.hardwarecontrol.conf
@@ -20,6 +20,8 @@
            send_interface="org.freedesktop.DBus.Properties"/>
     <allow send_destination="org.trinitydesktop.hardwarecontrol.Brightness"
            send_interface="org.freedesktop.DBus.Properties"/>
+    <allow send_destination="org.trinitydesktop.hardwarecontrol.Power"
+           send_interface="org.freedesktop.DBus.Properties"/>
 
     <allow send_destination="org.trinitydesktop.hardwarecontrol"
            send_interface="org.trinitydesktop.hardwarecontrol"/>
@@ -27,6 +29,8 @@
            send_interface="org.trinitydesktop.hardwarecontrol.CPUGovernor"/>
     <allow send_destination="org.trinitydesktop.hardwarecontrol"
            send_interface="org.trinitydesktop.hardwarecontrol.Brightness"/>
+    <allow send_destination="org.trinitydesktop.hardwarecontrol"
+           send_interface="org.trinitydesktop.hardwarecontrol.Power"/>
   </policy>
 
   <policy context="default">
diff --git a/tdecore/tdehw/hwlibdaemons/dbus/tde_dbus_hardwarecontrol.c b/tdecore/tdehw/hwlibdaemons/dbus/tde_dbus_hardwarecontrol.c
index f7e707522..4cdbcea9b 100644
--- a/tdecore/tdehw/hwlibdaemons/dbus/tde_dbus_hardwarecontrol.c
+++ b/tdecore/tdehw/hwlibdaemons/dbus/tde_dbus_hardwarecontrol.c
@@ -249,6 +249,43 @@ void reply_SetBrightness(DBusMessage* msg, DBusConnection* conn) {
 	free(safepath);
 }
 
+void reply_CanSetPower(DBusMessage* msg, DBusConnection* conn, char* state) {
+
+	// check if path is writable
+	int writable = false;
+	int rval = access ("/sys/power/state", W_OK);
+	if (rval == 0) {
+		writable = true;
+	}
+
+	// check if method is supported
+	int method = false;
+	if (writable) {
+		FILE *node = fopen("/sys/power/state", "r");
+		if (node != NULL) {
+			char *line = NULL;
+			size_t len = 0;
+			ssize_t read = getline(&line, &len, node);
+			if (line) {
+				method = strstr(line, state) != NULL;
+				free(line);
+			}
+			if (fclose(node) == EOF) {
+				// Error!
+			}
+		}
+	}
+
+	// send reply
+	reply_Bool(msg, conn, writable && method);
+}
+
+void reply_SetPower(DBusMessage* msg, DBusConnection* conn, char* state) {
+
+	// set power state
+	reply_SetGivenPath(msg, conn, "/sys/power/state", state);
+}
+
 void listen() {
 	DBusMessage* msg;
 	DBusMessage* reply;
@@ -309,6 +346,24 @@ void listen() {
 		else if (dbus_message_is_method_call(msg, "org.trinitydesktop.hardwarecontrol.Brightness", "SetBrightness")) {
 			reply_SetBrightness(msg, conn);
 		}
+		else if (dbus_message_is_method_call(msg, "org.trinitydesktop.hardwarecontrol.Power", "CanStandby")) {
+			reply_CanSetPower(msg, conn, "standby");
+		}
+		else if (dbus_message_is_method_call(msg, "org.trinitydesktop.hardwarecontrol.Power", "Standby")) {
+			reply_SetPower(msg, conn, "standby");
+		}
+		else if (dbus_message_is_method_call(msg, "org.trinitydesktop.hardwarecontrol.Power", "CanSuspend")) {
+			reply_CanSetPower(msg, conn, "mem");
+		}
+		else if (dbus_message_is_method_call(msg, "org.trinitydesktop.hardwarecontrol.Power", "Suspend")) {
+			reply_SetPower(msg, conn, "mem");
+		}
+		else if (dbus_message_is_method_call(msg, "org.trinitydesktop.hardwarecontrol.Power", "CanHibernate")) {
+			reply_CanSetPower(msg, conn, "disk");
+		}
+		else if (dbus_message_is_method_call(msg, "org.trinitydesktop.hardwarecontrol.Power", "Hibernate")) {
+			reply_SetPower(msg, conn, "disk");
+		}
 		else {
 			fprintf(stderr, "[tde_dbus_hardwarecontrol] Unknown method '%s' called on interface '%s', ignoring\n", dbus_message_get_member(msg), dbus_message_get_interface(msg));
 		}
diff --git a/tdecore/tdehw/tderootsystemdevice.cpp b/tdecore/tdehw/tderootsystemdevice.cpp
index 422ff50de..86a92340c 100644
--- a/tdecore/tdehw/tderootsystemdevice.cpp
+++ b/tdecore/tdehw/tderootsystemdevice.cpp
@@ -30,13 +30,13 @@
 
 #include "config.h"
 
-#if defined(WITH_UPOWER) || defined(WITH_CONSOLEKIT)
+#if defined(WITH_TDEHWLIB_DAEMONS) || defined(WITH_UPOWER) || defined(WITH_DEVKITPOWER) || defined(WITH_HAL) || defined(WITH_CONSOLEKIT)
 	#include <tqdbusdata.h>
 	#include <tqdbusmessage.h>
 	#include <tqdbusproxy.h>
 	#include <tqdbusvariant.h>
 	#include <tqdbusconnection.h>
-#endif // defined(WITH_UPOWER) || defined(WITH_CONSOLEKIT)
+#endif // defined(WITH_TDEHWLIB_DAEMONS) || defined(WITH_UPOWER) || defined(WITH_DEVKITPOWER) || defined(WITH_HAL) || defined(WITH_CONSOLEKIT)
 
 TDERootSystemDevice::TDERootSystemDevice(TDEGenericDeviceType::TDEGenericDeviceType dt, TQString dn) : TDEGenericDevice(dt, dn) {
 	m_hibernationSpace = -1;
@@ -107,9 +107,24 @@ bool TDERootSystemDevice::canStandby() {
 			return FALSE;
 		}
 	}
-	else {
-		return FALSE;
+
+#ifdef WITH_TDEHWLIB_DAEMONS
+	{
+		TQT_DBusConnection dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
+		if (dbusConn.isConnected()) {
+			// can standby?
+			TQT_DBusMessage msg = TQT_DBusMessage::methodCall(
+						"org.trinitydesktop.hardwarecontrol",
+						"/org/trinitydesktop/hardwarecontrol",
+						"org.trinitydesktop.hardwarecontrol.Power",
+						"CanStandby");
+			TQT_DBusMessage reply = dbusConn.sendWithReply(msg);
+			if (reply.type() == TQT_DBusMessage::ReplyMessage && reply.count() == 1) {
+				return reply[0].toBool();
+			}
+		}
 	}
+#endif // WITH_TDEHWLIB_DAEMONS
 }
 
 bool TDERootSystemDevice::canSuspend() {
@@ -186,6 +201,24 @@ bool TDERootSystemDevice::canSuspend() {
 	}
 #endif // WITH_HAL
 
+#ifdef WITH_TDEHWLIB_DAEMONS
+	{
+		TQT_DBusConnection dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
+		if (dbusConn.isConnected()) {
+			// can suspend?
+			TQT_DBusMessage msg = TQT_DBusMessage::methodCall(
+						"org.trinitydesktop.hardwarecontrol",
+						"/org/trinitydesktop/hardwarecontrol",
+						"org.trinitydesktop.hardwarecontrol.Power",
+						"CanSuspend");
+			TQT_DBusMessage reply = dbusConn.sendWithReply(msg);
+			if (reply.type() == TQT_DBusMessage::ReplyMessage && reply.count() == 1) {
+				return reply[0].toBool();
+			}
+		}
+	}
+#endif // WITH_TDEHWLIB_DAEMONS
+
 	return FALSE;
 }
 
@@ -263,6 +296,24 @@ bool TDERootSystemDevice::canHibernate() {
 	}
 #endif // WITH_HAL
 
+#ifdef WITH_TDEHWLIB_DAEMONS
+	{
+		TQT_DBusConnection dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
+		if (dbusConn.isConnected()) {
+			// can hibernate?
+			TQT_DBusMessage msg = TQT_DBusMessage::methodCall(
+						"org.trinitydesktop.hardwarecontrol",
+						"/org/trinitydesktop/hardwarecontrol",
+						"org.trinitydesktop.hardwarecontrol.Power",
+						"CanHibernate");
+			TQT_DBusMessage reply = dbusConn.sendWithReply(msg);
+			if (reply.type() == TQT_DBusMessage::ReplyMessage && reply.count() == 1) {
+				return reply[0].toBool();
+			}
+		}
+	}
+#endif // WITH_TDEHWLIB_DAEMONS
+
 	return FALSE;
 }
 
@@ -492,6 +543,48 @@ bool TDERootSystemDevice::setPowerState(TDESystemPowerState::TDESystemPowerState
 		}
 #endif // WITH_HAL
 
+#ifdef WITH_TDEHWLIB_DAEMONS
+		{
+			TQT_DBusConnection dbusConn;
+			dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
+			if ( dbusConn.isConnected() ) {
+				if (ps == TDESystemPowerState::Standby) {
+					TQT_DBusMessage msg = TQT_DBusMessage::methodCall(
+								"org.trinitydesktop.hardwarecontrol",
+								"/org/trinitydesktop/hardwarecontrol",
+								"org.trinitydesktop.hardwarecontrol.Power",
+								"Standby");
+					TQT_DBusMessage reply = dbusConn.sendWithReply(msg);
+					if (reply.type() == TQT_DBusMessage::ReplyMessage) {
+						return true;
+					}
+				}
+				else if (ps == TDESystemPowerState::Suspend) {
+					TQT_DBusMessage msg = TQT_DBusMessage::methodCall(
+								"org.trinitydesktop.hardwarecontrol",
+								"/org/trinitydesktop/hardwarecontrol",
+								"org.trinitydesktop.hardwarecontrol.Power",
+								"Suspend");
+					TQT_DBusMessage reply = dbusConn.sendWithReply(msg);
+					if (reply.type() == TQT_DBusMessage::ReplyMessage) {
+						return true;
+					}
+				}
+				else if (ps == TDESystemPowerState::Hibernate) {
+					TQT_DBusMessage msg = TQT_DBusMessage::methodCall(
+								"org.trinitydesktop.hardwarecontrol",
+								"/org/trinitydesktop/hardwarecontrol",
+								"org.trinitydesktop.hardwarecontrol.Power",
+								"Hibernate");
+					TQT_DBusMessage reply = dbusConn.sendWithReply(msg);
+					if (reply.type() == TQT_DBusMessage::ReplyMessage) {
+						return true;
+					}
+				}
+			}
+		}
+#endif // WITH_TDEHWLIB_DAEMONS
+
 		return false;
 	}
 	else if (ps == TDESystemPowerState::PowerOff) {