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| author | Hans de Goede <hdegoede@redhat.com> | 2024-08-12 23:39:48 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-10-17 16:26:35 +0300 |
| commit | 2527e4131dbda10d1df79da64a3e6f5fed1f7a1d (patch) | |
| tree | 398c80c4879c53c1db139edc071efa6ec3c63bc7 /drivers/i2c | |
| parent | 5c1892d8c348b86ad80af03073fc5d15433de380 (diff) | |
| download | linux-2527e4131dbda10d1df79da64a3e6f5fed1f7a1d.tar.xz | |
i2c: i801: Use a different adapter-name for IDF adapters
[ 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>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-i801.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index 328c0dab6b14..299fe9d3afab 100644 --- 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); |