Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 69 insertions, 0 deletions

diff --git a/drivers/thermal/user_space.c b/drivers/thermal/user_space.c
new file mode 100644
index 000000000..8e92a06ef
--- /dev/null
+++ b/drivers/thermal/user_space.c
@@ -0,0 +1,69 @@
+/*
+ *  user_space.c - A simple user space Thermal events notifier
+ *
+ *  Copyright (C) 2012 Intel Corp
+ *  Copyright (C) 2012 Durgadoss R <durgadoss.r@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.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/thermal.h>
+#include <linux/slab.h>
+
+#include "thermal_core.h"
+
+/**
+ * notify_user_space - Notifies user space about thermal events
+ * @tz - thermal_zone_device
+ * @trip - trip point index
+ *
+ * This function notifies the user space through UEvents.
+ */
+static int notify_user_space(struct thermal_zone_device *tz, int trip)
+{
+	char *thermal_prop[5];
+	int i;
+
+	mutex_lock(&tz->lock);
+	thermal_prop[0] = kasprintf(GFP_KERNEL, "NAME=%s", tz->type);
+	thermal_prop[1] = kasprintf(GFP_KERNEL, "TEMP=%d", tz->temperature);
+	thermal_prop[2] = kasprintf(GFP_KERNEL, "TRIP=%d", trip);
+	thermal_prop[3] = kasprintf(GFP_KERNEL, "EVENT=%d", tz->notify_event);
+	thermal_prop[4] = NULL;
+	kobject_uevent_env(&tz->device.kobj, KOBJ_CHANGE, thermal_prop);
+	for (i = 0; i < 4; ++i)
+		kfree(thermal_prop[i]);
+	mutex_unlock(&tz->lock);
+	return 0;
+}
+
+static struct thermal_governor thermal_gov_user_space = {
+	.name		= "user_space",
+	.throttle	= notify_user_space,
+};
+
+int thermal_gov_user_space_register(void)
+{
+	return thermal_register_governor(&thermal_gov_user_space);
+}
+
+void thermal_gov_user_space_unregister(void)
+{
+	thermal_unregister_governor(&thermal_gov_user_space);
+}
+