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authorSudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>2013-07-18 06:22:04 -0400
committerSudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>2013-08-21 05:29:51 -0400
commitbd00860e960e52658cebfd65eeb4748ed6ff039f (patch)
treee30d9b7a56311e9eed0bab4043c89d988e890a1d
parentf86e4718f24b83be0c42894d2b97accc993d65d3 (diff)
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>
-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 @@
1#ifndef _LINUX_OF_DEVICE_H 1#ifndef _LINUX_OF_DEVICE_H
2#define _LINUX_OF_DEVICE_H 2#define _LINUX_OF_DEVICE_H
3 3
4#include <linux/cpu.h>
4#include <linux/platform_device.h> 5#include <linux/platform_device.h>
5#include <linux/of_platform.h> /* temporary until merge */ 6#include <linux/of_platform.h> /* temporary until merge */
6 7
@@ -43,6 +44,15 @@ static inline void of_device_node_put(struct device *dev)
43 of_node_put(dev->of_node); 44 of_node_put(dev->of_node);
44} 45}
45 46
47static inline struct device_node *of_cpu_device_node_get(int cpu)
48{
49 struct device *cpu_dev;
50 cpu_dev = get_cpu_device(cpu);
51 if (!cpu_dev)
52 return NULL;
53 return of_node_get(cpu_dev->of_node);
54}
55
46#else /* CONFIG_OF */ 56#else /* CONFIG_OF */
47 57
48static inline int of_driver_match_device(struct device *dev, 58static inline int of_driver_match_device(struct device *dev,
@@ -67,6 +77,11 @@ static inline const struct of_device_id *of_match_device(
67{ 77{
68 return NULL; 78 return NULL;
69} 79}
80
81static inline struct device_node *of_cpu_device_node_get(int cpu)
82{
83 return NULL;
84}
70#endif /* CONFIG_OF */ 85#endif /* CONFIG_OF */
71 86
72#endif /* _LINUX_OF_DEVICE_H */ 87#endif /* _LINUX_OF_DEVICE_H */