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Subject[PATCH v6 03/23] drivers/fsi: Add empty master scan
Date
From: Jeremy Kerr <jk@ozlabs.org>

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>
---
drivers/fsi/fsi-core.c | 25 +++++++++++++++++++++++--
1 file changed, 23 insertions(+), 2 deletions(-)

diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c
index 2f19509..e90d45d 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);

--
1.8.2.2
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