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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
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
-rw-r--r--arch/powerpc/kernel/of_device.c122
-rw-r--r--arch/sparc/kernel/of_device.c109
-rw-r--r--arch/sparc64/kernel/of_device.c114
-rw-r--r--drivers/Kconfig2
-rw-r--r--drivers/of/Kconfig3
-rw-r--r--drivers/of/Makefile1
-rw-r--r--drivers/of/device.c131
7 files changed, 142 insertions, 340 deletions
diff --git a/arch/powerpc/kernel/of_device.c b/arch/powerpc/kernel/of_device.c
index a464d67248df..89b911e83c04 100644
--- a/arch/powerpc/kernel/of_device.c
+++ b/arch/powerpc/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>
@@ -8,118 +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_node - Tell if an device_node has a matching of_match structure
13 * @ids: array of of device match structures to search in
14 * @node: the of device structure to match against
15 *
16 * Low level utility function used by device matching.
17 */
18const struct of_device_id *of_match_node(const struct of_device_id *matches,
19 const struct device_node *node)
20{
21 while (matches->name[0] || matches->type[0] || matches->compatible[0]) {
22 int match = 1;
23 if (matches->name[0])
24 match &= node->name
25 && !strcmp(matches->name, node->name);
26 if (matches->type[0])
27 match &= node->type
28 && !strcmp(matches->type, node->type);
29 if (matches->compatible[0])
30 match &= of_device_is_compatible(node,
31 matches->compatible);
32 if (match)
33 return matches;
34 matches++;
35 }
36 return NULL;
37}
38
39/**
40 * of_match_device - Tell if an of_device structure has a matching
41 * of_match structure
42 * @ids: array of of device match structures to search in
43 * @dev: the of device structure to match against
44 *
45 * Used by a driver to check whether an of_device present in the
46 * system is in its list of supported devices.
47 */
48const struct of_device_id *of_match_device(const struct of_device_id *matches,
49 const struct of_device *dev)
50{
51 if (!dev->node)
52 return NULL;
53 return of_match_node(matches, dev->node);
54}
55
56struct of_device *of_dev_get(struct of_device *dev)
57{
58 struct device *tmp;
59
60 if (!dev)
61 return NULL;
62 tmp = get_device(&dev->dev);
63 if (tmp)
64 return to_of_device(tmp);
65 else
66 return NULL;
67}
68
69void of_dev_put(struct of_device *dev)
70{
71 if (dev)
72 put_device(&dev->dev);
73}
74
75static ssize_t dev_show_devspec(struct device *dev,
76 struct device_attribute *attr, char *buf)
77{
78 struct of_device *ofdev;
79
80 ofdev = to_of_device(dev);
81 return sprintf(buf, "%s", ofdev->node->full_name);
82}
83
84static DEVICE_ATTR(devspec, S_IRUGO, dev_show_devspec, NULL);
85
86/**
87 * of_release_dev - free an of device structure when all users of it are finished.
88 * @dev: device that's been disconnected
89 *
90 * Will be called only by the device core when all users of this of device are
91 * done.
92 */
93void of_release_dev(struct device *dev)
94{
95 struct of_device *ofdev;
96
97 ofdev = to_of_device(dev);
98 of_node_put(ofdev->node);
99 kfree(ofdev);
100}
101
102int of_device_register(struct of_device *ofdev)
103{
104 int rc;
105
106 BUG_ON(ofdev->node == NULL);
107
108 rc = device_register(&ofdev->dev);
109 if (rc)
110 return rc;
111
112 return device_create_file(&ofdev->dev, &dev_attr_devspec);
113}
114
115void of_device_unregister(struct of_device *ofdev)
116{
117 device_remove_file(&ofdev->dev, &dev_attr_devspec);
118
119 device_unregister(&ofdev->dev);
120}
121
122
123ssize_t of_device_get_modalias(struct of_device *ofdev, 12ssize_t of_device_get_modalias(struct of_device *ofdev,
124 char *str, ssize_t len) 13 char *str, ssize_t len)
125{ 14{
@@ -229,14 +118,5 @@ int of_device_uevent(struct device *dev,
229 118
230 return 0; 119 return 0;
231} 120}
232
233
234EXPORT_SYMBOL(of_match_node);
235EXPORT_SYMBOL(of_match_device);
236EXPORT_SYMBOL(of_device_register);
237EXPORT_SYMBOL(of_device_unregister);
238EXPORT_SYMBOL(of_dev_get);
239EXPORT_SYMBOL(of_dev_put);
240EXPORT_SYMBOL(of_release_dev);
241EXPORT_SYMBOL(of_device_uevent); 121EXPORT_SYMBOL(of_device_uevent);
242EXPORT_SYMBOL(of_device_get_modalias); 122EXPORT_SYMBOL(of_device_get_modalias);
diff --git a/arch/sparc/kernel/of_device.c b/arch/sparc/kernel/of_device.c
index fd7f8cb668a3..0760b8157847 100644
--- a/arch/sparc/kernel/of_device.c
+++ b/arch/sparc/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;
@@ -735,56 +684,6 @@ void of_unregister_driver(struct of_platform_driver *drv)
735 driver_unregister(&drv->driver); 684 driver_unregister(&drv->driver);
736} 685}
737 686
738
739static ssize_t dev_show_devspec(struct device *dev, struct device_attribute *attr, char *buf)
740{
741 struct of_device *ofdev;
742
743 ofdev = to_of_device(dev);
744 return sprintf(buf, "%s", ofdev->node->full_name);
745}
746
747static DEVICE_ATTR(devspec, S_IRUGO, dev_show_devspec, NULL);
748
749/**
750 * of_release_dev - free an of device structure when all users of it are finished.
751 * @dev: device that's been disconnected
752 *
753 * Will be called only by the device core when all users of this of device are
754 * done.
755 */
756void of_release_dev(struct device *dev)
757{
758 struct of_device *ofdev;
759
760 ofdev = to_of_device(dev);
761
762 kfree(ofdev);
763}
764
765int of_device_register(struct of_device *ofdev)
766{
767 int rc;
768
769 BUG_ON(ofdev->node == NULL);
770
771 rc = device_register(&ofdev->dev);
772 if (rc)
773 return rc;
774
775 rc = device_create_file(&ofdev->dev, &dev_attr_devspec);
776 if (rc)
777 device_unregister(&ofdev->dev);
778
779 return rc;
780}
781
782void of_device_unregister(struct of_device *ofdev)
783{
784 device_remove_file(&ofdev->dev, &dev_attr_devspec);
785 device_unregister(&ofdev->dev);
786}
787
788struct of_device* of_platform_device_create(struct device_node *np, 687struct of_device* of_platform_device_create(struct device_node *np,
789 const char *bus_id, 688 const char *bus_id,
790 struct device *parent, 689 struct device *parent,
@@ -810,12 +709,6 @@ struct of_device* of_platform_device_create(struct device_node *np,
810 return dev; 709 return dev;
811} 710}
812 711
813EXPORT_SYMBOL(of_match_device);
814EXPORT_SYMBOL(of_register_driver); 712EXPORT_SYMBOL(of_register_driver);
815EXPORT_SYMBOL(of_unregister_driver); 713EXPORT_SYMBOL(of_unregister_driver);
816EXPORT_SYMBOL(of_device_register);
817EXPORT_SYMBOL(of_device_unregister);
818EXPORT_SYMBOL(of_dev_get);
819EXPORT_SYMBOL(of_dev_put);
820EXPORT_SYMBOL(of_platform_device_create); 714EXPORT_SYMBOL(of_platform_device_create);
821EXPORT_SYMBOL(of_release_dev);
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);
diff --git a/drivers/Kconfig b/drivers/Kconfig
index 707650ab77a7..3e1c442deff9 100644
--- a/drivers/Kconfig
+++ b/drivers/Kconfig
@@ -8,6 +8,8 @@ source "drivers/connector/Kconfig"
8 8
9source "drivers/mtd/Kconfig" 9source "drivers/mtd/Kconfig"
10 10
11source "drivers/of/Kconfig"
12
11source "drivers/parport/Kconfig" 13source "drivers/parport/Kconfig"
12 14
13source "drivers/pnp/Kconfig" 15source "drivers/pnp/Kconfig"
diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
new file mode 100644
index 000000000000..c03072b12f42
--- /dev/null
+++ b/drivers/of/Kconfig
@@ -0,0 +1,3 @@
1config OF_DEVICE
2 def_bool y
3 depends on OF && (SPARC || PPC_OF)
diff --git a/drivers/of/Makefile b/drivers/of/Makefile
index cddbe840e30a..c46d998e367b 100644
--- a/drivers/of/Makefile
+++ b/drivers/of/Makefile
@@ -1 +1,2 @@
1obj-y = base.o 1obj-y = base.o
2obj-$(CONFIG_OF_DEVICE) += device.o
diff --git a/drivers/of/device.c b/drivers/of/device.c
new file mode 100644
index 000000000000..7f233d77d62f
--- /dev/null
+++ b/drivers/of/device.c
@@ -0,0 +1,131 @@
1#include <linux/string.h>
2#include <linux/kernel.h>
3#include <linux/of.h>
4#include <linux/init.h>
5#include <linux/module.h>
6#include <linux/mod_devicetable.h>
7#include <linux/slab.h>
8
9#include <asm/errno.h>
10#include <asm/of_device.h>
11
12/**
13 * of_match_node - Tell if an device_node has a matching of_match structure
14 * @ids: array of of device match structures to search in
15 * @node: the of device structure to match against
16 *
17 * Low level utility function used by device matching.
18 */
19const struct of_device_id *of_match_node(const struct of_device_id *matches,
20 const struct device_node *node)
21{
22 while (matches->name[0] || matches->type[0] || matches->compatible[0]) {
23 int match = 1;
24 if (matches->name[0])
25 match &= node->name
26 && !strcmp(matches->name, node->name);
27 if (matches->type[0])
28 match &= node->type
29 && !strcmp(matches->type, node->type);
30 if (matches->compatible[0])
31 match &= of_device_is_compatible(node,
32 matches->compatible);
33 if (match)
34 return matches;
35 matches++;
36 }
37 return NULL;
38}
39EXPORT_SYMBOL(of_match_node);
40
41/**
42 * of_match_device - Tell if an of_device structure has a matching
43 * of_match structure
44 * @ids: array of of device match structures to search in
45 * @dev: the of device structure to match against
46 *
47 * Used by a driver to check whether an of_device present in the
48 * system is in its list of supported devices.
49 */
50const struct of_device_id *of_match_device(const struct of_device_id *matches,
51 const struct of_device *dev)
52{
53 if (!dev->node)
54 return NULL;
55 return of_match_node(matches, dev->node);
56}
57EXPORT_SYMBOL(of_match_device);
58
59struct of_device *of_dev_get(struct of_device *dev)
60{
61 struct device *tmp;
62
63 if (!dev)
64 return NULL;
65 tmp = get_device(&dev->dev);
66 if (tmp)
67 return to_of_device(tmp);
68 else
69 return NULL;
70}
71EXPORT_SYMBOL(of_dev_get);
72
73void of_dev_put(struct of_device *dev)
74{
75 if (dev)
76 put_device(&dev->dev);
77}
78EXPORT_SYMBOL(of_dev_put);
79
80static ssize_t dev_show_devspec(struct device *dev,
81 struct device_attribute *attr, char *buf)
82{
83 struct of_device *ofdev;
84
85 ofdev = to_of_device(dev);
86 return sprintf(buf, "%s", ofdev->node->full_name);
87}
88
89static DEVICE_ATTR(devspec, S_IRUGO, dev_show_devspec, NULL);
90
91/**
92 * of_release_dev - free an of device structure when all users of it are finished.
93 * @dev: device that's been disconnected
94 *
95 * Will be called only by the device core when all users of this of device are
96 * done.
97 */
98void of_release_dev(struct device *dev)
99{
100 struct of_device *ofdev;
101
102 ofdev = to_of_device(dev);
103 of_node_put(ofdev->node);
104 kfree(ofdev);
105}
106EXPORT_SYMBOL(of_release_dev);
107
108int of_device_register(struct of_device *ofdev)
109{
110 int rc;
111
112 BUG_ON(ofdev->node == NULL);
113
114 rc = device_register(&ofdev->dev);
115 if (rc)
116 return rc;
117
118 rc = device_create_file(&ofdev->dev, &dev_attr_devspec);
119 if (rc)
120 device_unregister(&ofdev->dev);
121
122 return rc;
123}
124EXPORT_SYMBOL(of_device_register);
125
126void of_device_unregister(struct of_device *ofdev)
127{
128 device_remove_file(&ofdev->dev, &dev_attr_devspec);
129 device_unregister(&ofdev->dev);
130}
131EXPORT_SYMBOL(of_device_unregister);
generated by cgit v1.2.2 (git 2.25.0) at 2026-01-05 18:54:06 -0500