Add a function to get platfrom data from device node.
Signed-off-by: Keerthy <j-keerthy@xxxxxx>
---
drivers/of/platform.c | 23 +++++++++++++++++++++++
include/linux/of_platform.h | 6 ++++++
2 files changed, 29 insertions(+)
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index b7cf84b..b9edfcf 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -60,6 +60,29 @@ struct platform_device *of_find_device_by_node(struct device_node *np)
}
EXPORT_SYMBOL(of_find_device_by_node);
+/**
+ * of_find_platdata_by_node - Find the platform_data associated with a node
+ * @np: Pointer to device tree node
+ *
+ * Fetches the platform device pointer of device tree node and in turn gets the
+ * associated platform data.
+ *
+ * Returns platform_data pointer, or NULL if not found
+ */
+void *of_find_platdata_by_node(struct device_node *np)
+{
+ struct platform_device *pdev;
+
+ pdev = of_find_device_by_node(np);
+ if (!pdev) {
+ pr_err("Unable to find pdev\n");
+ return pdev;
+ }
+
+ return dev_get_platdata(&pdev->dev);
+}
+EXPORT_SYMBOL(of_find_platdata_by_node);
+
#ifdef CONFIG_OF_ADDRESS
/*
* The following routines scan a subtree and registers a device for
diff --git a/include/linux/of_platform.h b/include/linux/of_platform.h
index fb908e5..77b770f 100644
--- a/include/linux/of_platform.h
+++ b/include/linux/of_platform.h
@@ -59,11 +59,17 @@ extern struct platform_device *of_device_alloc(struct device_node *np,
struct device *parent);
#ifdef CONFIG_OF
extern struct platform_device *of_find_device_by_node(struct device_node *np);
+extern void *of_find_platdata_by_node(struct device_node *np);
#else
static inline struct platform_device *of_find_device_by_node(struct device_node *np)
{
return NULL;
}
+
+static void *of_find_platdata_by_node(struct device_node *np)
+{
+ return NULL;
+}
#endif
/* Platform devices and busses creation */
--
1.9.1
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