From: Jeremy Kerr <jk@xxxxxxxxxx> 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@xxxxxxxxxx> Signed-off-by: Chris Bostic <cbostic@xxxxxxxxxx> --- drivers/fsi/fsi-core.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c index 60a6d91..ceaf536 100644 --- a/drivers/fsi/fsi-core.c +++ b/drivers/fsi/fsi-core.c @@ -19,6 +19,8 @@ #include "fsi-master.h" +#define FSI_N_SLAVES 4 + static atomic_t master_idx = ATOMIC_INIT(-1); struct fsi_slave { @@ -30,12 +32,34 @@ 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 slave_id) +{ + /* todo: initialise slave device, perform engine scan */ + + return -ENODEV; +} + /* FSI master support */ +static int fsi_master_scan(struct fsi_master *master) +{ + int link, slave_id; + + for (link = 0; link < master->n_links; link++) + for (slave_id = 0; slave_id < FSI_N_SLAVES; slave_id++) + fsi_slave_init(master, link, slave_id); + + return 0; + +} + int fsi_master_register(struct fsi_master *master) { master->idx = atomic_inc_return(&master_idx); get_device(master->dev); + fsi_master_scan(master); return 0; } EXPORT_SYMBOL_GPL(fsi_master_register); -- 1.8.2.2 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html