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

From: atull
Date: Wed Sep 24 2014 - 14:20:35 EST

From: Alan Tull <atull@xxxxxxxxxxxxxxxxxxxxx>

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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