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+/*
+ * Copyright 2010, Intel Corporation
+ *
+ * This file is part of PowerTOP
+ *
+ * This program file 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program in a file named COPYING; if not, write to the
+ * Free Software Foundation, Inc,
+ * 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA
+ * or just google for it.
+ *
+ * Authors:
+ * Arjan van de Ven <arjan@linux.intel.com>
+ */
+#ifndef _INCLUDE_GUARD_BACKLIGHT_H
+#define _INCLUDE_GUARD_BACKLIGHT_H
+
+#include <limits.h>
+
+#include "device.h"
+
+class backlight: public device {
+ int min_level, max_level;
+ int start_level, end_level;
+ char sysfs_path[PATH_MAX];
+ char name[4096];
+ int r_index;
+ int r_index_power;
+public:
+
+ backlight(const char *_name, const char *path);
+
+ virtual void start_measurement(void);
+ virtual void end_measurement(void);
+
+ virtual double utilization(void); /* percentage */
+
+ virtual const char * class_name(void) { return "backlight";};
+
+ virtual const char * device_name(void);
+ virtual const char * human_name(void) { return "Display backlight";};
+ virtual double power_usage(struct result_bundle *result, struct parameter_bundle *bundle);
+ virtual int grouping_prio(void) { return 10; };
+};
+
+extern void create_all_backlights(void);
+
+
+#endif