summaryrefslogtreecommitdiff
path: root/include/thermal.h
diff options
context:
space:
mode:
authorYe.Li <B37916@freescale.com>2014-11-20 21:14:13 +0800
committerStefano Babic <sbabic@denx.de>2014-11-21 15:30:01 +0100
commite3568d2ecadda3e6c24ffab1670b77763df7419f (patch)
tree7cf42cfaf1907666407b8ff28cfb6aaaea59fa87 /include/thermal.h
parentcf202d268b5d27b84a8c6df1d749ed3967451be4 (diff)
downloadu-boot-imx-e3568d2ecadda3e6c24ffab1670b77763df7419f.zip
u-boot-imx-e3568d2ecadda3e6c24ffab1670b77763df7419f.tar.gz
u-boot-imx-e3568d2ecadda3e6c24ffab1670b77763df7419f.tar.bz2
DM: thermal: Add imx thermal DM driver
Add a new thermal uclass for thermal sensor and implement the imx thermal driver basing on this uclass. Signed-off-by: Ye.Li <B37916@freescale.com> Acked-by: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'include/thermal.h')
-rw-r--r--include/thermal.h42
1 files changed, 42 insertions, 0 deletions
diff --git a/include/thermal.h b/include/thermal.h
new file mode 100644
index 0000000..5d6101b
--- /dev/null
+++ b/include/thermal.h
@@ -0,0 +1,42 @@
+/*
+ *
+ * (C) Copyright 2014 Freescale Semiconductor, Inc
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef _THERMAL_H_
+#define _THERMAL_H_
+
+#include <dm.h>
+
+int thermal_get_temp(struct udevice *dev, int *temp);
+
+/**
+ * struct struct dm_thermal_ops - Driver model Thermal operations
+ *
+ * The uclass interface is implemented by all Thermal devices which use
+ * driver model.
+ */
+struct dm_thermal_ops {
+ /**
+ * Get the current temperature
+ *
+ * The device provided is the slave device. It's parent controller
+ * will be used to provide the communication.
+ *
+ * This must be called before doing any transfers with a Thermal slave.
+ * It will enable and initialize any Thermal hardware as necessary,
+ * and make sure that the SCK line is in the correct idle state. It is
+ * not allowed to claim the same bus for several slaves without
+ * releasing the bus in between.
+ *
+ * @dev: The Thermal device
+ *
+ * Returns: 0 if the bus was claimed successfully, or a negative value
+ * if it wasn't.
+ */
+ int (*get_temp)(struct udevice *dev, int *temp);
+};
+
+#endif /* _THERMAL_H_ */