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[PATCH] I2C: add i2c module alias for i2c drivers to use

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This is the start of adding hotplug-like support for i2c devices.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Greg Kroah-Hartman 2005-10-22 00:23:27 +02:00
parent 0dc9a32d9a
commit a9d1b24d91
3 changed files with 16 additions and 0 deletions
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1
include/linux/i2c.h
View File

@ -29,6 +29,7 @@
#include <linux/module.h> #include <linux/module.h>
#include <linux/types.h> #include <linux/types.h>
#include <linux/i2c-id.h> #include <linux/i2c-id.h>
#include <linux/mod_devicetable.h>
#include <linux/device.h> /* for struct device */ #include <linux/device.h> /* for struct device */
#include <asm/semaphore.h> #include <asm/semaphore.h>

5
include/linux/mod_devicetable.h
View File

@ -244,4 +244,9 @@ struct pcmcia_device_id {
#define PCMCIA_DEV_ID_MATCH_FAKE_CIS 0x0200 #define PCMCIA_DEV_ID_MATCH_FAKE_CIS 0x0200
#define PCMCIA_DEV_ID_MATCH_ANONYMOUS 0x0400 #define PCMCIA_DEV_ID_MATCH_ANONYMOUS 0x0400
/* I2C */
struct i2c_device_id {
__u16 id;
};
#endif /* LINUX_MOD_DEVICETABLE_H */ #endif /* LINUX_MOD_DEVICETABLE_H */

10
scripts/mod/file2alias.c
View File

@ -359,6 +359,13 @@ static int do_vio_entry(const char *filename, struct vio_device_id *vio,
return 1; 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 _ */ /* Ignore any prefix, eg. v850 prepends _ */
static inline int sym_is(const char *symbol, const char *name) 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")) else if (sym_is(symname, "__mod_vio_device_table"))
do_table(symval, sym->st_size, sizeof(struct vio_device_id), do_table(symval, sym->st_size, sizeof(struct vio_device_id),
do_vio_entry, mod); 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);
} }