the generic thermal sysfs driver

The Generic Thermal sysfs driver for thermal management.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Thomas Sujith <sujith.thomas@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 90 insertions, 0 deletions

diff --git a/include/linux/thermal.h b/include/linux/thermal.h
new file mode 100644
index 000000000000..e4b76c7afb51
--- /dev/null
+++ b/include/linux/thermal.h
@@ -0,0 +1,90 @@
+/*
+ *  thermal.h  ($Revision: 0 $)
+ *
+ *  Copyright (C) 2008  Intel Corp
+ *  Copyright (C) 2008  Zhang Rui <rui.zhang@intel.com>
+ *  Copyright (C) 2008  Sujith Thomas <sujith.thomas@intel.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *  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.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#ifndef __THERMAL_H__
+#define __THERMAL_H__
+
+#include <linux/idr.h>
+#include <linux/device.h>
+
+struct thermal_zone_device;
+struct thermal_cooling_device;
+
+struct thermal_zone_device_ops {
+	int (*bind) (struct thermal_zone_device *,
+		     struct thermal_cooling_device *);
+	int (*unbind) (struct thermal_zone_device *,
+		       struct thermal_cooling_device *);
+	int (*get_temp) (struct thermal_zone_device *, char *);
+	int (*get_mode) (struct thermal_zone_device *, char *);
+	int (*set_mode) (struct thermal_zone_device *, const char *);
+	int (*get_trip_type) (struct thermal_zone_device *, int, char *);
+	int (*get_trip_temp) (struct thermal_zone_device *, int, char *);
+};
+
+struct thermal_cooling_device_ops {
+	int (*get_max_state) (struct thermal_cooling_device *, char *);
+	int (*get_cur_state) (struct thermal_cooling_device *, char *);
+	int (*set_cur_state) (struct thermal_cooling_device *, unsigned int);
+};
+
+#define THERMAL_TRIPS_NONE -1
+#define THERMAL_MAX_TRIPS 10
+#define THERMAL_NAME_LENGTH 20
+struct thermal_cooling_device {
+	int id;
+	char type[THERMAL_NAME_LENGTH];
+	struct device device;
+	void *devdata;
+	struct thermal_cooling_device_ops *ops;
+	struct list_head node;
+};
+
+struct thermal_zone_device {
+	int id;
+	char type[THERMAL_NAME_LENGTH];
+	struct device device;
+	void *devdata;
+	int trips;
+	struct thermal_zone_device_ops *ops;
+	struct list_head cooling_devices;
+	struct idr idr;
+	struct mutex lock;	/* protect cooling devices list */
+	struct list_head node;
+};
+
+struct thermal_zone_device *thermal_zone_device_register(char *, int, void *,
+					struct thermal_zone_device_ops *);
+void thermal_zone_device_unregister(struct thermal_zone_device *);
+
+int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int,
+				     struct thermal_cooling_device *);
+int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int,
+				       struct thermal_cooling_device *);
+
+struct thermal_cooling_device *thermal_cooling_device_register(char *, void *,
+					struct thermal_cooling_device_ops *);
+void thermal_cooling_device_unregister(struct thermal_cooling_device *);
+
+#endif				/* __THERMAL_H__ */