Commit 12745b07 authored by Mika Westerberg's avatar Mika Westerberg Committed by Wolfram Sang
Browse files

i2c: i801: Add support for Intel Emmitsburg PCH 



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

Signed-off-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: default avatarJarkko Nikula <jarkko.nikula@linux.intel.com>
Reviewed-by: default avatarJean Delvare <jdelvare@suse.de>
Signed-off-by: default avatarWolfram Sang <wsa@kernel.org>
parent db4694e6

Documentation/i2c/busses/i2c-i801.rst

+1 −0
Original line number Diff line number Diff line
@@ -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

drivers/i2c/busses/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -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.

drivers/i2c/busses/i2c-i801.c

+4 −0
Original line number Diff line number Diff line
@@ -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;