From: "Edward A. James" <eaja...@us.ibm.com> This series adds a hwmon driver to support the OCC on POWER8 and POWER9 processors. The OCC is an embedded processor that provides realtime power and thermal monitoring and management.
This driver has two different platform drivers as a "base" for the hwmon interface, as the means of communicating with the OCC on P8 and P9 is completely different. For P8, the driver is an I2C client driver. For P9 the driver is an FSI-based OCC client driver, and uses the OCC driver in-kernel API. The OCC driver is on the LKML (latest https://lkml.org/lkml/2017/11/20/631). Changes since v2: * Add sysfs_notify for the error and throttling attributes when change is detected. * Removed occs_present counting of devices bound. * Improved remove() of P9 driver to avoid bad behavior with relation to OCC driver when unbound. * Added default cases (return EINVAL) for all sensor show functions. * Added temperature fault sensor. * Added back dt binding documentation for P9 to address checkpatch warning. * Added occs_present attribute from the poll response. Changes since v1: * Remove wait loop in P9 code, as that is now handled by FSI OCC driver. * Removed dt binding documentation for P9, FSI OCC driver will probe OCC hwmon driver automatically. * Moved OCC response code definitions to the OCC include file. * Fixed includes. * Changed some structure fields to __beXX as that is what they are. * Changed some errnos. * Removed some dev_err(). * Refactored P8 code a bit to use #defined addresses and magic values, and changed "goto retry" to a loop. * Refactored error handling a bit. Edward A. James (12): Documentation: hwmon: Add OCC documentation Documentation: ABI: Add occ-hwmon driver sysfs documentation dt-bindings: i2c: Add P8 OCC hwmon device documentation dt-bindings: fsi: Add P9 OCC hwmon device documentation hwmon (occ): Add On-Chip Controller (OCC) hwmon driver hwmon (occ): Add command transport method for P8 and P9 hwmon (occ): Parse OCC poll response hwmon (occ): Add sensor types and versions hwmon (occ): Add sensor attributes and register hwmon device hwmon (occ): Add non-hwmon attributes hwmon (occ): Add error handling hwmon (occ): Add sysfs notification for errors and throttling Documentation/ABI/testing/sysfs-driver-occ-hwmon | 85 ++ .../devicetree/bindings/fsi/ibm,p9-occ-hwmon.txt | 16 + .../devicetree/bindings/i2c/ibm,p8-occ-hwmon.txt | 25 + Documentation/hwmon/occ | 75 ++ drivers/hwmon/Kconfig | 2 + drivers/hwmon/Makefile | 1 + drivers/hwmon/occ/Kconfig | 28 + drivers/hwmon/occ/Makefile | 11 + drivers/hwmon/occ/common.c | 1387 ++++++++++++++++++++ drivers/hwmon/occ/common.h | 124 ++ drivers/hwmon/occ/p8_i2c.c | 262 ++++ drivers/hwmon/occ/p9_sbe.c | 161 +++ 12 files changed, 2177 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-driver-occ-hwmon create mode 100644 Documentation/devicetree/bindings/fsi/ibm,p9-occ-hwmon.txt create mode 100644 Documentation/devicetree/bindings/i2c/ibm,p8-occ-hwmon.txt create mode 100644 Documentation/hwmon/occ create mode 100644 drivers/hwmon/occ/Kconfig create mode 100644 drivers/hwmon/occ/Makefile create mode 100644 drivers/hwmon/occ/common.c create mode 100644 drivers/hwmon/occ/common.h create mode 100644 drivers/hwmon/occ/p8_i2c.c create mode 100644 drivers/hwmon/occ/p9_sbe.c -- 1.8.3.1
