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-rw-r--r--src/ec/lenovo/h8/smm.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/src/ec/lenovo/h8/smm.c b/src/ec/lenovo/h8/smm.c
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+++ b/src/ec/lenovo/h8/smm.c
@@ -0,0 +1,35 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2016 Nicola Corna <nicola@corna.info>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <ec/acpi/ec.h>
+#include <pc80/mc146818rtc.h>
+
+#include "h8.h"
+
+void h8_usb_always_on(void)
+{
+ u8 val;
+ u8 reg;
+
+ if (get_option(&val, "usb_always_on") != CB_SUCCESS)
+ val = 0;
+
+ if (val) {
+ reg = ec_read(H8_USB_ALWAYS_ON);
+ reg &= ~H8_USB_ALWAYS_ON_AC_ONLY;
+ reg |= H8_USB_ALWAYS_ON_ENABLE;
+ ec_write(H8_USB_ALWAYS_ON, reg);
+ }
+}