In order to read signed thermal coefficients from DT we need a proper
function.
Signed-off-by: Stefan Wahren <stefan.wahren@xxxxxxxx>
---
include/linux/of.h | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/include/linux/of.h b/include/linux/of.h
index 21e6323..98a046a 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -474,6 +474,34 @@ static inline int of_property_read_u32_array(const struct device_node *np,
}
/**
+ * of_property_read_s32_array - Find and read an array of 32 bit signed integers
+ * from a property.
+ *
+ * @np: device node from which the property value is to be read.
+ * @propname: name of the property to be searched.
+ * @out_values: pointer to return value, modified only if return value is 0.
+ * @sz: number of array elements to read
+ *
+ * Search for a property in a device node and read 32-bit value(s) from
+ * it. Returns 0 on success, -EINVAL if the property does not exist,
+ * -ENODATA if property does not have a value, and -EOVERFLOW if the
+ * property data isn't large enough.
+ *
+ * The out_values is modified only if a valid s32 value can be decoded.
+ */
+static inline int of_property_read_s32_array(const struct device_node *np,
+ const char *propname,
+ s32 *out_values, size_t sz)
+{
+ int ret = of_property_read_variable_u32_array(np, propname, out_values,
+ sz, 0);
+ if (ret >= 0)
+ return 0;
+ else
+ return ret;
+}
+
+/**
* of_property_read_u64_array - Find and read an array of 64 bit integers
* from a property.
*
@@ -676,6 +704,13 @@ static inline int of_property_read_u32_array(const struct device_node *np,
return -ENOSYS;
}
+static inline int of_property_read_s32_array(const struct device_node *np,
+ const char *propname,
+ s32 *out_values, size_t sz)
+{
+ return -ENOSYS;
+}
+
static inline int of_property_read_u64_array(const struct device_node *np,
const char *propname,
u64 *out_values, size_t sz)
--
1.7.9.5
--
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