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authorStephen Rothwell <sfr@canb.auug.org.au>2007-05-01 02:40:36 -0400
committerStephen Rothwell <sfr@canb.auug.org.au>2007-07-19 23:39:59 -0400
commitf85ff3056cefdf4635ebf98b30e9a7d86521567f (patch)
treef08bc591d6219b287261452a3f5dde58d6b5dd79 /arch/sparc64/kernel/of_device.c
parent1ef4d4242d9c494c49ae1ae66dc938fce0272816 (diff)
Begin to consolidate of_device.c
This moves all the common parts for the Sparc, Sparc64 and PowerPC of_device.c files into drivers/of/device.c. Apart from the simple move, Sparc gains of_match_node() and a call to of_node_put in of_release_dev(). PowerPC gains better recovery if device_create_file() fails in of_device_register(). Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Paul Mackerras <paulus@samba.org> Acked-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/of_device.c')
-rw-r--r--arch/sparc64/kernel/of_device.c114
1 files changed, 3 insertions, 111 deletions
diff --git a/arch/sparc64/kernel/of_device.c b/arch/sparc64/kernel/of_device.c
index 6676b93219dc..68927bc3d3a9 100644
--- a/arch/sparc64/kernel/of_device.c
+++ b/arch/sparc64/kernel/of_device.c
@@ -1,5 +1,6 @@
1#include <linux/string.h> 1#include <linux/string.h>
2#include <linux/kernel.h> 2#include <linux/kernel.h>
3#include <linux/of.h>
3#include <linux/init.h> 4#include <linux/init.h>
4#include <linux/module.h> 5#include <linux/module.h>
5#include <linux/mod_devicetable.h> 6#include <linux/mod_devicetable.h>
@@ -8,38 +9,6 @@
8#include <asm/errno.h> 9#include <asm/errno.h>
9#include <asm/of_device.h> 10#include <asm/of_device.h>
10 11
11/**
12 * of_match_device - Tell if an of_device structure has a matching
13 * of_match structure
14 * @ids: array of of device match structures to search in
15 * @dev: the of device structure to match against
16 *
17 * Used by a driver to check whether an of_device present in the
18 * system is in its list of supported devices.
19 */
20const struct of_device_id *of_match_device(const struct of_device_id *matches,
21 const struct of_device *dev)
22{
23 if (!dev->node)
24 return NULL;
25 while (matches->name[0] || matches->type[0] || matches->compatible[0]) {
26 int match = 1;
27 if (matches->name[0])
28 match &= dev->node->name
29 && !strcmp(matches->name, dev->node->name);
30 if (matches->type[0])
31 match &= dev->node->type
32 && !strcmp(matches->type, dev->node->type);
33 if (matches->compatible[0])
34 match &= of_device_is_compatible(dev->node,
35 matches->compatible);
36 if (match)
37 return matches;
38 matches++;
39 }
40 return NULL;
41}
42
43static int of_platform_bus_match(struct device *dev, struct device_driver *drv) 12static int of_platform_bus_match(struct device *dev, struct device_driver *drv)
44{ 13{
45 struct of_device * of_dev = to_of_device(dev); 14 struct of_device * of_dev = to_of_device(dev);
@@ -52,26 +21,6 @@ static int of_platform_bus_match(struct device *dev, struct device_driver *drv)
52 return of_match_device(matches, of_dev) != NULL; 21 return of_match_device(matches, of_dev) != NULL;
53} 22}
54 23
55struct of_device *of_dev_get(struct of_device *dev)
56{
57 struct device *tmp;
58
59 if (!dev)
60 return NULL;
61 tmp = get_device(&dev->dev);
62 if (tmp)
63 return to_of_device(tmp);
64 else
65 return NULL;
66}
67
68void of_dev_put(struct of_device *dev)
69{
70 if (dev)
71 put_device(&dev->dev);
72}
73
74
75static int of_device_probe(struct device *dev) 24static int of_device_probe(struct device *dev)
76{ 25{
77 int error = -ENODEV; 26 int error = -ENODEV;
@@ -1020,61 +969,13 @@ int of_register_driver(struct of_platform_driver *drv, struct bus_type *bus)
1020 /* register with core */ 969 /* register with core */
1021 return driver_register(&drv->driver); 970 return driver_register(&drv->driver);
1022} 971}
972EXPORT_SYMBOL(of_register_driver);
1023 973
1024void of_unregister_driver(struct of_platform_driver *drv) 974void of_unregister_driver(struct of_platform_driver *drv)
1025{ 975{
1026 driver_unregister(&drv->driver); 976 driver_unregister(&drv->driver);
1027} 977}
1028 978EXPORT_SYMBOL(of_unregister_driver);
1029
1030static ssize_t dev_show_devspec(struct device *dev, struct device_attribute *attr, char *buf)
1031{
1032 struct of_device *ofdev;
1033
1034 ofdev = to_of_device(dev);
1035 return sprintf(buf, "%s", ofdev->node->full_name);
1036}
1037
1038static DEVICE_ATTR(devspec, S_IRUGO, dev_show_devspec, NULL);
1039
1040/**
1041 * of_release_dev - free an of device structure when all users of it are finished.
1042 * @dev: device that's been disconnected
1043 *
1044 * Will be called only by the device core when all users of this of device are
1045 * done.
1046 */
1047void of_release_dev(struct device *dev)
1048{
1049 struct of_device *ofdev;
1050
1051 ofdev = to_of_device(dev);
1052
1053 kfree(ofdev);
1054}
1055
1056int of_device_register(struct of_device *ofdev)
1057{
1058 int rc;
1059
1060 BUG_ON(ofdev->node == NULL);
1061
1062 rc = device_register(&ofdev->dev);
1063 if (rc)
1064 return rc;
1065
1066 rc = device_create_file(&ofdev->dev, &dev_attr_devspec);
1067 if (rc)
1068 device_unregister(&ofdev->dev);
1069
1070 return rc;
1071}
1072
1073void of_device_unregister(struct of_device *ofdev)
1074{
1075 device_remove_file(&ofdev->dev, &dev_attr_devspec);
1076 device_unregister(&ofdev->dev);
1077}
1078 979
1079struct of_device* of_platform_device_create(struct device_node *np, 980struct of_device* of_platform_device_create(struct device_node *np,
1080 const char *bus_id, 981 const char *bus_id,
@@ -1100,13 +1001,4 @@ struct of_device* of_platform_device_create(struct device_node *np,
1100 1001
1101 return dev; 1002 return dev;
1102} 1003}
1103
1104EXPORT_SYMBOL(of_match_device);
1105EXPORT_SYMBOL(of_register_driver);
1106EXPORT_SYMBOL(of_unregister_driver);
1107EXPORT_SYMBOL(of_device_register);
1108EXPORT_SYMBOL(of_device_unregister);
1109EXPORT_SYMBOL(of_dev_get);
1110EXPORT_SYMBOL(of_dev_put);
1111EXPORT_SYMBOL(of_platform_device_create); 1004EXPORT_SYMBOL(of_platform_device_create);
1112EXPORT_SYMBOL(of_release_dev);