On Fri, Sep 27, 2013 at 6:02 PM, Andy Lutomirski <luto@xxxxxxxxxxxxxx> wrote: > Intel LGA2011 machines have dedicated SMBUS controllers for DIMM > sockets. Because they're dedicated, they can be safely and accurately > probed, since all devices on them are known to be attached to DIMMs. > The devices found are: > - SPD EEPROMs > - TSODs (Temperature Sensor on DIMMs) > - Other interesting things, with drivers hopefully to follow... > > This patch series adds a simple generic layer for probing for DIMMs over > SMBUS and an i2c bus driver for the iMC controller found on Intel > LGA2011 chips. > > It now uses only modern infrastructure -- new-style I2C probing and the > at24 (instead of eeprom) driver. > > I've tested this on a Core i7 Extreme and on a Xeon E5 server. > > Patches 1-3 are useful even without patch 4. I'm still hoping for feedback > on patch 4. > > Changes from v4: > - Added the sb_edac changes -- i2c_imc and sb_edac can now coexist > - Added some paranoid race detection. > - The driver now confirms its ability to claim software control of the SMBUS > master. This prevents unpleasant problems on systems that enable CLTT > (closed loop thermal throttling). > - Reordered the patches so that the DIMM bus code is last. > > Changes from v3: > - Dropped redundant "tsod" driver > - Dropped eeprom modalias > - Switched to probing for the "eeprom" and "jc42" > > Andy Lutomirski (4): > Move Intel SNB device ids from sb_edac to pci_ids.h > sb_edac: Claim a different PCI device > i2c_imc: New driver for Intel's iMC, found on LGA2011 chips > i2c, i2c_imc: Add DIMM bus code > > drivers/edac/sb_edac.c | 32 +-- > drivers/i2c/busses/Kconfig | 19 ++ > drivers/i2c/busses/Makefile | 5 + > drivers/i2c/busses/dimm-bus.c | 97 ++++++++ > drivers/i2c/busses/i2c-imc.c | 562 ++++++++++++++++++++++++++++++++++++++++++ > include/linux/i2c/dimm-bus.h | 24 ++ > include/linux/pci_ids.h | 15 ++ > 7 files changed, 723 insertions(+), 31 deletions(-) > create mode 100644 drivers/i2c/busses/dimm-bus.c > create mode 100644 drivers/i2c/busses/i2c-imc.c > create mode 100644 include/linux/i2c/dimm-bus.h Any update on these? It would be nice to get them reviewed and applied. Thanks, Andy -- 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
