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

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[ Upstream commit 43457ada98c824f310adb7bd96bd5f2fcd9a3279 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Hans de Goede 2024-08-12 22:39:48 +02:00 committed by Greg Kroah-Hartman
parent e4f218455c
commit a28703d4d4
1 changed files with 8 additions and 1 deletions
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9
drivers/i2c/busses/i2c-i801.c
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@ -1895,8 +1895,15 @@ 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);