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authorGreg Kroah-Hartman <gregkh@suse.de>2005-10-22 00:23:27 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2005-10-28 14:02:15 -0700
commita9d1b24d91f91b77db3da8aeacb414764f789b9c (patch)
treea7400c6154b7e5b6839b3c25fecc2daac75c4a2b
parent0dc9a32d9a975ccd25b9f531451165c93e1c7313 (diff)
[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@suse.de>
-rw-r--r--include/linux/i2c.h1
-rw-r--r--include/linux/mod_devicetable.h5
-rw-r--r--scripts/mod/file2alias.c10
3 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 32977fb1d99a..f88577ca3b3a 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 2f0299a448f6..7b08c11ec4cc 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 f2ee673329a7..e3d144a3f10b 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -359,6 +359,13 @@ static int do_vio_entry(const char *filename, struct vio_device_id *vio,
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 *mod, struct elf_info *info,
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);
}