lkml.org 
[lkml]   [2013]   [Aug]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v4 07/19] of/device: add helper to get cpu device node from logical cpu index
Date
From: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>

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>
---
include/linux/of_device.h | 15 +++++++++++++++
1 file changed, 15 insertions(+)

diff --git a/include/linux/of_device.h b/include/linux/of_device.h
index 9d27475..82ce324 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 */
--
1.8.1.2



\
 
 \ /
  Last update: 2013-08-20 12:01    [W:0.878 / U:0.804 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site