i2c: Adding support for Intel iSMT SMBus 2.0 host controller

The iSMT (Intel SMBus Message Transport) supports multi-master I2C/SMBus,
as well as IPMI.  It's operation is DMA-based and utilizes descriptors to
initiate transactions on the bus.

The iSMT hardware can act as both a master and a target, although this
driver only supports being a master.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Bill Brown <bill.e.brown@intel.com>
Tested-by: Seth Heasley <seth.heasley@intel.com>
Reviewed-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Wolfram Sang <wolfram@the-dreams.de>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 77d28873b76f..87df863ba110 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -122,6 +122,16 @@ config I2C_ISCH
           This driver can also be built as a module. If so, the module
           will be called i2c-isch.
 
+config I2C_ISMT
+        tristate "Intel iSMT SMBus Controller"
+        depends on PCI && X86
+        help
+          If you say yes to this option, support will be included for the Intel
+          iSMT SMBus host controller interface.
+
+          This driver can also be built as a module.  If so, the module will be
+          called i2c-ismt.
+
 config I2C_PIIX4
         tristate "Intel PIIX4 and compatible (ATI/AMD/Serverworks/Broadcom/SMSC)"
         depends on PCI