[PATCH v3 0/2] Add support for Microchip MCP41xxx/42xxx potentiometers

[Chris Coffey <cmc@babblebit.net>]

Hello all,

This patch series adds device-tree documentation and driver support
for the Microchip MCP41xxx/42xxx family of digital potentiometers.

Changes in v3:
 - Get device names from mcp41010_cfg struct instead of spi device as
   suggested by Jonathan Cameron.
 - Refactor code structure in mcp41010_write_raw() as recommended by
   Jonathan Cameron.
 - Only call spi_get_device_id() when necessary to load config as
   suggested by Slawomir Stepien.
 - In mcp41010_probe(), return err to make static checkers happy as
   recommended by Jonathan Cameron.
 - Edit mcp41010_match struct members to fit on one line as suggested
   by Slawomir Stepien.
 - In device tree binding documentation, add company name to example
   as pointed out by Slawomir Stepien.
 - In device tree binding documentation, remove mcp41010 prefix from
   example as suggested by Jonathan Cameron.

Changes in v2:
 - Move device tree binding documentation to separate commit as
   pointed out by Himanshu Jha.
 - Remove explicit '= 0' initialization in mcp41010_type enum as
   recommended by Himanshu Jha.
 - Change MCP41010_WRITE from (0x01 << 4) to BIT(4) as recommended by
   Himanshu Jha.
 - Use of_device_get_match_data() to load configuration as 
   recommended by Peter Rosin. 
 - Rename MCP41010_WIPER_ENABLE to MCP41010_WIPER_CHANNEL as 
   suggested by Peter Rosin.
 - Remove CONFIG_OF build protections as recommended by Jonathan
   Cameron.
 - Remove of_match_ptr wrapper from mcp41010_driver struct as 
   recommended by Jonathan Cameron.
 - Remove blank line in mcp41010.c intro as recommended by Jonathan
   Cameron.

Chris Coffey (2):
  dt-bindings: iio: potentiometer: Add Microchip MCP41xxx/42xxx
  iio: potentiometer: Add driver for Microchip MCP41xxx/42xxx

 .../bindings/iio/potentiometer/mcp41010.txt        |  29 +++
 drivers/iio/potentiometer/Kconfig                  |  12 ++
 drivers/iio/potentiometer/Makefile                 |   1 +
 drivers/iio/potentiometer/mcp41010.c               | 204 +++++++++++++++++++++
 4 files changed, 246 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/potentiometer/mcp41010.txt
 create mode 100644 drivers/iio/potentiometer/mcp41010.c

-- 
2.11.0