i2c: i801: Add support for Intel Diamond Rapids

Add SMBus PCI ID on Intel Diamond Rapids.

Signed-off-by: Zeng Guang <guang.zeng@intel.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20251021073522.3458383-1-heikki.krogerus@linux.intel.com

Author: arthurzeng19

Documentation/i2c/busses/i2c-i801.rst

@@ -51,6 +51,7 @@ Supported adapters:
   * Intel Arrow Lake (SOC)
   * Intel Panther Lake (SOC)
   * Intel Wildcat Lake (SOC)
+  * Intel Diamond Rapids (SOC)
 
    Datasheets: Publicly available at the Intel website
 

drivers/i2c/busses/Kconfig

@@ -166,6 +166,7 @@ config I2C_I801
 	    Arrow Lake (SOC)
 	    Panther Lake (SOC)
 	    Wildcat Lake (SOC)
+	    Diamond Rapids (SOC)
 
 	  This driver can also be built as a module.  If so, the module
 	  will be called i2c-i801.

drivers/i2c/busses/i2c-i801.c

@@ -242,6 +242,7 @@
 #define PCI_DEVICE_ID_INTEL_ALDER_LAKE_P_SMBUS		0x51a3
 #define PCI_DEVICE_ID_INTEL_ALDER_LAKE_M_SMBUS		0x54a3
 #define PCI_DEVICE_ID_INTEL_BIRCH_STREAM_SMBUS		0x5796
+#define PCI_DEVICE_ID_INTEL_DIAMOND_RAPIDS_SMBUS	0x5827
 #define PCI_DEVICE_ID_INTEL_BROXTON_SMBUS		0x5ad4
 #define PCI_DEVICE_ID_INTEL_ARROW_LAKE_H_SMBUS		0x7722
 #define PCI_DEVICE_ID_INTEL_RAPTOR_LAKE_S_SMBUS		0x7a23
@@ -1054,6 +1055,7 @@ static const struct pci_device_id i801_ids[] = {
 	{ PCI_DEVICE_DATA(INTEL, METEOR_LAKE_SOC_S_SMBUS,	FEATURES_ICH5 | FEATURE_TCO_CNL) },
 	{ PCI_DEVICE_DATA(INTEL, METEOR_LAKE_PCH_S_SMBUS,	FEATURES_ICH5 | FEATURE_TCO_CNL) },
 	{ PCI_DEVICE_DATA(INTEL, BIRCH_STREAM_SMBUS,		FEATURES_ICH5)			 },
+	{ PCI_DEVICE_DATA(INTEL, DIAMOND_RAPIDS_SMBUS,		FEATURES_ICH5 | FEATURE_TCO_CNL) },
 	{ PCI_DEVICE_DATA(INTEL, ARROW_LAKE_H_SMBUS,		FEATURES_ICH5 | FEATURE_TCO_CNL) },
 	{ PCI_DEVICE_DATA(INTEL, PANTHER_LAKE_H_SMBUS,		FEATURES_ICH5 | FEATURE_TCO_CNL) },
 	{ PCI_DEVICE_DATA(INTEL, PANTHER_LAKE_P_SMBUS,		FEATURES_ICH5 | FEATURE_TCO_CNL) },