[PATCH 1/2] i2c: i801: Add support for Intel Emmitsburg PCH

[Jarkko Nikula <jarkko.nikula@linux.intel.com>]

From: Mika Westerberg <mika.westerberg@linux.intel.com>

Add support for SMBus controller on Intel Emmitsburg PCH. This is the
same IP as used in Cannon Lake and derivatives.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
---
 Documentation/i2c/busses/i2c-i801.rst | 1 +
 drivers/i2c/busses/Kconfig            | 1 +
 drivers/i2c/busses/i2c-i801.c         | 4 ++++
 3 files changed, 6 insertions(+)

diff --git a/Documentation/i2c/busses/i2c-i801.rst b/Documentation/i2c/busses/i2c-i801.rst
index b83da0e94184..faf32330c335 100644
--- a/Documentation/i2c/busses/i2c-i801.rst
+++ b/Documentation/i2c/busses/i2c-i801.rst
@@ -43,6 +43,7 @@ Supported adapters:
   * Intel Elkhart Lake (PCH)
   * Intel Tiger Lake (PCH)
   * Intel Jasper Lake (SOC)
+  * Intel Emmitsburg (PCH)
 
    Datasheets: Publicly available at the Intel website
 
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 735bf31a3fdf..085ca9b009ed 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -146,6 +146,7 @@ config I2C_I801
 	    Elkhart Lake (PCH)
 	    Tiger Lake (PCH)
 	    Jasper Lake (SOC)
+	    Emmitsburg (PCH)
 
 	  This driver can also be built as a module.  If so, the module
 	  will be called i2c-i801.
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index fea644921a76..7797ef1d25d9 100644
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -54,6 +54,7 @@
  * Sunrise Point-H (PCH) 	0xa123  32	hard	yes	yes	yes
  * Sunrise Point-LP (PCH)	0x9d23	32	hard	yes	yes	yes
  * DNV (SOC)			0x19df	32	hard	yes	yes	yes
+ * Emmitsburg (PCH)		0x1bc9	32	hard	yes	yes	yes
  * Broxton (SOC)		0x5ad4	32	hard	yes	yes	yes
  * Lewisburg (PCH)		0xa1a3	32	hard	yes	yes	yes
  * Lewisburg Supersku (PCH)	0xa223	32	hard	yes	yes	yes
@@ -207,6 +208,7 @@
 #define PCI_DEVICE_ID_INTEL_BAYTRAIL_SMBUS		0x0f12
 #define PCI_DEVICE_ID_INTEL_CDF_SMBUS			0x18df
 #define PCI_DEVICE_ID_INTEL_DNV_SMBUS			0x19df
+#define PCI_DEVICE_ID_INTEL_EBG_SMBUS			0x1bc9
 #define PCI_DEVICE_ID_INTEL_COUGARPOINT_SMBUS		0x1c22
 #define PCI_DEVICE_ID_INTEL_PATSBURG_SMBUS		0x1d22
 /* Patsburg also has three 'Integrated Device Function' SMBus controllers */
@@ -1062,6 +1064,7 @@ static const struct pci_device_id i801_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_SMBUS) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CDF_SMBUS) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_DNV_SMBUS) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EBG_SMBUS) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BROXTON_SMBUS) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LEWISBURG_SMBUS) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LEWISBURG_SSKU_SMBUS) },
@@ -1749,6 +1752,7 @@ static int i801_probe(struct pci_dev *dev, const struct pci_device_id *id)
 	case PCI_DEVICE_ID_INTEL_ELKHART_LAKE_SMBUS:
 	case PCI_DEVICE_ID_INTEL_TIGERLAKE_LP_SMBUS:
 	case PCI_DEVICE_ID_INTEL_JASPER_LAKE_SMBUS:
+	case PCI_DEVICE_ID_INTEL_EBG_SMBUS:
 		priv->features |= FEATURE_BLOCK_PROC;
 		priv->features |= FEATURE_I2C_BLOCK_READ;
 		priv->features |= FEATURE_IRQ;
-- 
2.27.0