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authorSudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>2013-07-18 14:22:04 +0400
committerSudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>2013-08-21 13:29:51 +0400
commitbd00860e960e52658cebfd65eeb4748ed6ff039f (patch)
treee30d9b7a56311e9eed0bab4043c89d988e890a1d /include/linux/of_device.h
parentf86e4718f24b83be0c42894d2b97accc993d65d3 (diff)
downloadlinux-bd00860e960e52658cebfd65eeb4748ed6ff039f.tar.xz
of/device: add helper to get cpu device node from logical cpu index
Multiple drivers need to get the cpu device node from the cpu logical index and then access the of_node. This patch adds helper function to fetch the device node directly. Acked-by: Rob Herring <rob.herring@calxeda.com> Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>
Diffstat (limited to 'include/linux/of_device.h')
-rw-r--r--include/linux/of_device.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/of_device.h b/include/linux/of_device.h
index 9d27475feec1..82ce324fdce7 100644
--- a/include/linux/of_device.h
+++ b/include/linux/of_device.h
@@ -1,6 +1,7 @@
#ifndef _LINUX_OF_DEVICE_H
#define _LINUX_OF_DEVICE_H
+#include <linux/cpu.h>
#include <linux/platform_device.h>
#include <linux/of_platform.h> /* temporary until merge */
@@ -43,6 +44,15 @@ static inline void of_device_node_put(struct device *dev)
of_node_put(dev->of_node);
}
+static inline struct device_node *of_cpu_device_node_get(int cpu)
+{
+ struct device *cpu_dev;
+ cpu_dev = get_cpu_device(cpu);
+ if (!cpu_dev)
+ return NULL;
+ return of_node_get(cpu_dev->of_node);
+}
+
#else /* CONFIG_OF */
static inline int of_driver_match_device(struct device *dev,
@@ -67,6 +77,11 @@ static inline const struct of_device_id *of_match_device(
{
return NULL;
}
+
+static inline struct device_node *of_cpu_device_node_get(int cpu)
+{
+ return NULL;
+}
#endif /* CONFIG_OF */
#endif /* _LINUX_OF_DEVICE_H */