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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
parentcf202d268b5d27b84a8c6df1d749ed3967451be4 (diff)
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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')
-rw-r--r--include/dm/uclass-id.h1
-rw-r--r--include/imx_thermal.h17
-rw-r--r--include/thermal.h42
3 files changed, 60 insertions, 0 deletions
diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h
index a8944c9..202f59b 100644
--- a/include/dm/uclass-id.h
+++ b/include/dm/uclass-id.h
@@ -28,6 +28,7 @@ enum uclass_id {
UCLASS_SPI_GENERIC, /* Generic SPI flash target */
UCLASS_SPI_FLASH, /* SPI flash */
UCLASS_CROS_EC, /* Chrome OS EC */
+ UCLASS_THERMAL, /* Thermal sensor */
UCLASS_COUNT,
UCLASS_INVALID = -1,
diff --git a/include/imx_thermal.h b/include/imx_thermal.h
new file mode 100644
index 0000000..be13652
--- /dev/null
+++ b/include/imx_thermal.h
@@ -0,0 +1,17 @@
+/*
+ *
+ * (C) Copyright 2014 Freescale Semiconductor, Inc
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef _IMX_THERMAL_H_
+#define _IMX_THERMAL_H_
+
+struct imx_thermal_plat {
+ void *regs;
+ int fuse_bank;
+ int fuse_word;
+};
+
+#endif /* _IMX_THERMAL_H_ */
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_ */