[PATCH v3 0/3] regulator support for pmbus and ltc2978

[<atull@opensource.altera.com>]

From: Alan Tull <atull@opensource.altera.com>

This set of patches adds regulator support for pmbus_core.c and ltc2978.c

Each output has individual on/off control.

>From PMBus_Specification_Part_II_Rev_1-3_20140318.pdf:
12.1.1. OPERATION Command Bit [7]
  Bit [7] controls whether the PMBus device output is on or off.
   If bit [7] is cleared (equals 0), then the output is off.
   If bit [7] is set (equals 1), then the output is on.

Patch 1: add two helper functions for byte pmbus byte operations
  * byte write and byte read/modify/write

Patch 2: changes for pmbus_core.c and pmbus.h
  * regulator_ops functions (is_enabled, enable, and disable)
  * gets regulator init data from device tree or platform data
  * registers the regulators
  * header has a macro for chip drivers to build their
    regulator_desc data

Patch 3: changes for ltc2978.c
  * Add Kconfig to enable/disable ltc2978 regulator functionality
  * add regulator_desc and of_regulator_match info
  * use same structs for all parts; set num_regulators appropriately.

Alan Tull (3):
  pmbus: core: add helpers for byte write and read modify write
  pmbus: add regulator support
  pmbus: ltc2978: add regulator support

 drivers/hwmon/pmbus/Kconfig      |    7 ++
 drivers/hwmon/pmbus/ltc2978.c    |   51 ++++++++++++
 drivers/hwmon/pmbus/pmbus.h      |   27 +++++++
 drivers/hwmon/pmbus/pmbus_core.c |  164 ++++++++++++++++++++++++++++++++++++++
 include/linux/i2c/pmbus.h        |    4 +
 5 files changed, 253 insertions(+)

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1.7.9.5