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authorJeremy Kerr <jk@ozlabs.org>2017-06-06 16:08:38 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-06-09 11:52:07 +0200
commit414c1026319bc10796a868c1fa0ba312c4ca9e67 (patch)
treeaa5105fb465ce1ce2d9c3981e249e2fe489d93df
parentfaf0b116dec119d766cb2cdf9cd954b5ee88d546 (diff)
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: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Chris Bostic <cbostic@linux.vnet.ibm.com> Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/fsi/fsi-core.c25
1 files changed, 23 insertions, 2 deletions
diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c
index 2f19509fa1da..e90d45dec168 100644
--- a/drivers/fsi/fsi-core.c
+++ b/drivers/fsi/fsi-core.c
@@ -32,7 +32,25 @@ struct fsi_slave {
#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 */
+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 rc;
@@ -44,10 +62,13 @@ int fsi_master_register(struct fsi_master *master)
dev_set_name(&master->dev, "fsi%d", master->idx);
rc = device_register(&master->dev);
- if (rc)
+ if (rc) {
ida_simple_remove(&master_ida, master->idx);
+ return rc;
+ }
- return rc;
+ fsi_master_scan(master);
+ return 0;
}
EXPORT_SYMBOL_GPL(fsi_master_register);

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