[PATCH] I2C: add i2c module alias for i2c drivers to use
This is the start of adding hotplug-like support for i2c devices.
Signed-off-by: Greg Kroah-Hartman <gregkh at suse.de>
---
commit a9d1b24d91f91b77db3da8aeacb414764f789b9c
tree a7400c6154b7e5b6839b3c25fecc2daac75c4a2b
parent 0dc9a32d9a975ccd25b9f531451165c93e1c7313
author Greg Kroah-Hartman <gregkh at suse.de> Sat, 22 Oct 2005 00:23:27 +0200
committer Greg Kroah-Hartman <gregkh at suse.de> Fri, 28 Oct 2005 14:02:15 -0700
include/linux/i2c.h | 1 +
include/linux/mod_devicetable.h | 5 +++++
scripts/mod/file2alias.c | 10 ++++++++++
3 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 32977fb..f88577c 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -29,6 +29,7 @@
#include <linux/module.h>
#include <linux/types.h>
#include <linux/i2c-id.h>
+#include <linux/mod_devicetable.h>
#include <linux/device.h> /* for struct device */
#include <asm/semaphore.h>
diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index 2f0299a..7b08c11 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -244,4 +244,9 @@ struct pcmcia_device_id {
#define PCMCIA_DEV_ID_MATCH_FAKE_CIS 0x0200
#define PCMCIA_DEV_ID_MATCH_ANONYMOUS 0x0400
+/* I2C */
+struct i2c_device_id {
+ __u16 id;
+};
+
#endif /* LINUX_MOD_DEVICETABLE_H */
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index f2ee673..e3d144a 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -359,6 +359,13 @@ static int do_vio_entry(const char *file
return 1;
}
+static int do_i2c_entry(const char *filename, struct i2c_device_id *i2c, char *alias)
+{
+ strcpy(alias, "i2c:");
+ ADD(alias, "id", 1, i2c->id);
+ return 1;
+}
+
/* Ignore any prefix, eg. v850 prepends _ */
static inline int sym_is(const char *symbol, const char *name)
{
@@ -443,6 +450,9 @@ void handle_moddevtable(struct module *m
else if (sym_is(symname, "__mod_vio_device_table"))
do_table(symval, sym->st_size, sizeof(struct vio_device_id),
do_vio_entry, mod);
+ else if (sym_is(symname, "__mod_i2c_device_table"))
+ do_table(symval, sym->st_size, sizeof(struct i2c_device_id),
+ do_i2c_entry, mod);
}
