On Thu, Jul 18, 2013 at 11:36:54AM -0700, Andy Lutomirski wrote: > Sandy Bridge Xeon and Extreme chips have integrated memory controllers > with (rather limited) onboard SMBUS masters. This driver gives access > to the bus. > > Signed-off-by: Andy Lutomirski <luto@xxxxxxxxxxxxxx> > --- > drivers/i2c/busses/Kconfig | 15 ++ > drivers/i2c/busses/Makefile | 1 + > drivers/i2c/busses/i2c-imc.c | 548 +++++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 564 insertions(+) > create mode 100644 drivers/i2c/busses/i2c-imc.c > > diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig > index e837f0e..7636782 100644 > --- a/drivers/i2c/busses/Kconfig > +++ b/drivers/i2c/busses/Kconfig > @@ -137,6 +137,21 @@ config I2C_DIMM_BUS > tristate > default n > > +config I2C_IMC > + tristate "Intel iMC (LGA 2011) SMBus Controller" > + depends on PCI && X86 > + select I2C_DIMM_BUS > + help > + If you say yes to this option, support will be included for the Intel > + Integrated Memory Controller SMBus host controller interface. This > + controller is found on LGA 2011 Xeons and Core i7 Extremes. > + > + It is possibly, although unlikely, that the use of this driver will > + interfere with your platform's RAM thermal management. > + > + This driver can also be built as a module. If so, the module will be > + called i2c-imc. > + > config I2C_PIIX4 > tristate "Intel PIIX4 and compatible (ATI/AMD/Serverworks/Broadcom/SMSC)" > depends on PCI > diff --git a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile > index 226bb2e..790b63d 100644 > --- a/drivers/i2c/busses/Makefile > +++ b/drivers/i2c/busses/Makefile > @@ -15,6 +15,7 @@ obj-$(CONFIG_I2C_AMD8111) += i2c-amd8111.o > obj-$(CONFIG_I2C_I801) += i2c-i801.o > obj-$(CONFIG_I2C_ISCH) += i2c-isch.o > obj-$(CONFIG_I2C_ISMT) += i2c-ismt.o > +obj-$(CONFIG_I2C_IMC) += i2c-imc.o > obj-$(CONFIG_I2C_NFORCE2) += i2c-nforce2.o > obj-$(CONFIG_I2C_NFORCE2_S4985) += i2c-nforce2-s4985.o > obj-$(CONFIG_I2C_PIIX4) += i2c-piix4.o > diff --git a/drivers/i2c/busses/i2c-imc.c b/drivers/i2c/busses/i2c-imc.c > new file mode 100644 > index 0000000..9643aeb > --- /dev/null > +++ b/drivers/i2c/busses/i2c-imc.c [ ... ] > + > + i2c_scan_dimm_bus(&ch->adapter); > + Wonder if this should (can) be part of the infrastructure, eg by introducing I2C_CLASS_DIMM. Guenter -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
