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Commit 414c1026 authored by Jeremy Kerr's avatar Jeremy Kerr Committed by Greg Kroah-Hartman
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drivers/fsi: Add empty master scan 



When a new fsi master is added, we will need to scan its links, and
slaves attached to those links. This change introduces a little shell to
iterate the links, which we will populate with the actual slave scan in
a later change.

Signed-off-by: default avatarJeremy Kerr <jk@ozlabs.org>
Signed-off-by: default avatarChris Bostic <cbostic@linux.vnet.ibm.com>
Signed-off-by: default avatarJoel Stanley <joel@jms.id.au>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent faf0b116

drivers/fsi/fsi-core.c

+23 −2
Original line number Original line Diff line number Diff line
@@ -32,7 +32,25 @@ struct fsi_slave { 




#define to_fsi_slave(d) container_of(d, struct fsi_slave, dev)

#define to_fsi_slave(d) container_of(d, struct fsi_slave, dev)





/* FSI slave support */

static int fsi_slave_init(struct fsi_master *master, int link, uint8_t id)

{

	/* todo: initialise slave device, perform engine scan */



	return -ENODEV;

}



/* FSI master support */

/* FSI master support */

static int fsi_master_scan(struct fsi_master *master)

{

	int link;



	for (link = 0; link < master->n_links; link++)

		fsi_slave_init(master, link, 0);



	return 0;

}



int fsi_master_register(struct fsi_master *master)

int fsi_master_register(struct fsi_master *master)

{

{

	int rc;

	int rc;
@@ -44,11 +62,14 @@ int fsi_master_register(struct fsi_master *master) 
	dev_set_name(&master->dev, "fsi%d", master->idx);

	dev_set_name(&master->dev, "fsi%d", master->idx);





	rc = device_register(&master->dev);

	rc = device_register(&master->dev);

	if (rc)

	if (rc) {

		ida_simple_remove(&master_ida, master->idx);

		ida_simple_remove(&master_ida, master->idx);



		return rc;

		return rc;

	}

	}



	fsi_master_scan(master);

	return 0;

}

EXPORT_SYMBOL_GPL(fsi_master_register);

EXPORT_SYMBOL_GPL(fsi_master_register);





void fsi_master_unregister(struct fsi_master *master)

void fsi_master_unregister(struct fsi_master *master)