Fix window refresh.

The window refresh does not work at all. When the mainloop exits, nothing
is done to refresh the current window.

Fix this by sending to ourself a SIGWINCH signal, so the display engine
will automatically catch the signal and refresh the current window.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
diff --git a/mainloop.c b/mainloop.c
index 56129aa..04d0ac9 100644
--- a/mainloop.c
+++ b/mainloop.c
@@ -22,6 +22,7 @@
 #include <stdlib.h>
 #include <errno.h>
 #include <unistd.h>
+#include <signal.h>
 #include <sys/epoll.h>
 #include "mainloop.h"
 
@@ -56,6 +57,17 @@
                         return -1;
                 }
 
+		/* 
+		 * A timeout occured. Let's send to ourself a SIGWINCH
+		 * so the window get refreshed automatically. No need
+		 * to use exported functions and this code stay self
+		 * contained.
+		 */
+		if (!nfds) {
+			kill(getpid(), SIGWINCH);
+			continue;
+		}
+
                 for (i = 0; i < nfds; i++) {
 			md = events[i].data.ptr;
 
diff --git a/powerdebug.h b/powerdebug.h
index 3852ca8..7cf8220 100644
--- a/powerdebug.h
+++ b/powerdebug.h
@@ -26,8 +26,8 @@
 #define CLOCK_OPTION		0x04
 #define GPIO_OPTION		0x08
 
-#define VERBOSE_OPTION		0x10
-#define DUMP_OPTION		0x20
+#define VERBOSE_OPTION		0x1000
+#define DUMP_OPTION		0x2000
 
 #define DEFAULT_OPTION (REGULATOR_OPTION | SENSOR_OPTION | \
 			CLOCK_OPTION | GPIO_OPTION)