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Diffstat (limited to 'drivers/fsi/fsi-core.c')
-rw-r--r--drivers/fsi/fsi-core.c37
1 files changed, 35 insertions, 2 deletions
diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c
index 1ec97909e520..235f17a6d89e 100644
--- a/drivers/fsi/fsi-core.c
+++ b/drivers/fsi/fsi-core.c
@@ -133,12 +133,45 @@ static int fsi_master_write(struct fsi_master *master, int link,
return master->write(master, link, slave_id, addr, val, size);
}
+static int fsi_master_link_enable(struct fsi_master *master, int link)
+{
+ if (master->link_enable)
+ return master->link_enable(master, link);
+
+ return 0;
+}
+
+/*
+ * Issue a break command on this link
+ */
+static int fsi_master_break(struct fsi_master *master, int link)
+{
+ if (master->send_break)
+ return master->send_break(master, link);
+
+ return 0;
+}
+
static int fsi_master_scan(struct fsi_master *master)
{
- int link;
+ int link, rc;
+
+ for (link = 0; link < master->n_links; link++) {
+ rc = fsi_master_link_enable(master, link);
+ if (rc) {
+ dev_dbg(&master->dev,
+ "enable link %d failed: %d\n", link, rc);
+ continue;
+ }
+ rc = fsi_master_break(master, link);
+ if (rc) {
+ dev_dbg(&master->dev,
+ "break to link %d failed: %d\n", link, rc);
+ continue;
+ }
- for (link = 0; link < master->n_links; link++)
fsi_slave_init(master, link, 0);
+ }
return 0;
}

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