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Commit a9d1b24d authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman
Browse files

[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: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 0dc9a32d

include/linux/i2c.h

+1 −0
Original line number Diff line number Diff line
@@ -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>

include/linux/mod_devicetable.h

+5 −0
Original line number Diff line number Diff line
@@ -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 */

scripts/mod/file2alias.c

+10 −0
Original line number Diff line number Diff line
@@ -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);



}