i2c: i801: Use a different adapter-name for IDF adapters

On chipsets with a second 'Integrated Device Function' SMBus controller use
a different adapter-name for the second IDF adapter.

This allows platform glue code which is looking for the primary i801
adapter to manually instantiate i2c_clients on to differentiate
between the 2.

This allows such code to find the primary i801 adapter by name, without
needing to duplicate the PCI-ids to feature-flags mapping from i2c-i801.c.

Reviewed-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>

diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index 328c0dab6b147e76a28e2acfc155b6a07f9818aa..299fe9d3afab0a4f03843173820de407979182ae 100644 (file)
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -1763,8 +1763,15 @@ static int i801_probe(struct pci_dev *dev, const struct pci_device_id *id)
 
        i801_add_tco(priv);
 
+       /*
+        * adapter.name is used by platform code to find the main I801 adapter
+        * to instantiante i2c_clients, do not change.
+        */
        snprintf(priv->adapter.name, sizeof(priv->adapter.name),
-               "SMBus I801 adapter at %04lx", priv->smba);
+                "SMBus %s adapter at %04lx",
+                (priv->features & FEATURE_IDF) ? "I801 IDF" : "I801",
+                priv->smba);
+
        err = i2c_add_adapter(&priv->adapter);
        if (err) {
                platform_device_unregister(priv->tco_pdev);