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| author | Jeremy Kerr <jk@ozlabs.org> | 2017-06-06 16:08:38 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-06-09 11:52:07 +0200 |
| commit | 414c1026319bc10796a868c1fa0ba312c4ca9e67 (patch) | |
| tree | aa5105fb465ce1ce2d9c3981e249e2fe489d93df | |
| parent | faf0b116dec119d766cb2cdf9cd954b5ee88d546 (diff) | |
| download | linux-414c1026319bc10796a868c1fa0ba312c4ca9e67.tar.gz | |
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.c | 25 |
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); |