zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/kernel/power/console.c b/ap/os/linux/linux-3.4.x/kernel/power/console.c
new file mode 100644
index 0000000..b1dc456
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/kernel/power/console.c
@@ -0,0 +1,33 @@
+/*
+ * Functions for saving/restoring console.
+ *
+ * Originally from swsusp.
+ */
+
+#include <linux/vt_kern.h>
+#include <linux/kbd_kern.h>
+#include <linux/vt.h>
+#include <linux/module.h>
+#include "power.h"
+
+#define SUSPEND_CONSOLE (MAX_NR_CONSOLES-1)
+
+static int orig_fgconsole, orig_kmsg;
+
+int pm_prepare_console(void)
+{
+ orig_fgconsole = vt_move_to_console(SUSPEND_CONSOLE, 1);
+ if (orig_fgconsole < 0)
+ return 1;
+
+ orig_kmsg = vt_kmsg_redirect(SUSPEND_CONSOLE);
+ return 0;
+}
+
+void pm_restore_console(void)
+{
+ if (orig_fgconsole >= 0) {
+ vt_move_to_console(orig_fgconsole, 0);
+ vt_kmsg_redirect(orig_kmsg);
+ }
+}