[v5,0/5] HID: mcp2221: iio support and device resource management

Message

Matt Ranostay Sept. 27, 2022, 2:50 a.m. UTC

This patchset is primarily to enable iio support for the MCP2221 HID driver,
but requires several Kconfig changes and device resource management.

First attempt of this patchset is referenced here:

Link: https://lore.kernel.org/all/20220729154723.99947-1-matt.ranostay@xxxxxxxxxxxx/

Changes from v1:
* Fixing various Kconfig recursive dependencies that appear with 'imply IIO'
* Switch hid-mcp2221 driver to device managed resources for i2c support
* Reworking patchset per advice on lore.kernel.org link above

Changes from v2:
* add linux-iio list to CC

Changes from v3:
* replace .remove() tasks with devm_add_action_or_reset() in .probe()
* reschedule SRAM configuration read on failures
* add IIO_CHAN_INFO_SCALE values for ADC + DAC based on reference voltage

Changes from v4:
* add .remove function with no operation to avoid hid_hw_stop() being called
  twice due to new devm functions
* add retries limit to five for reading SRAM configuration data
* update 'io: adc: stx104: fix future recursive dependencies' to new Kconfig
  location for STX104 driver on linux-next pending-fixes branch

Matt Ranostay (5):
  i2c: muxes: ltc4306: fix future recursive dependencies
  iio: adc: stx104: fix future recursive dependencies
  iio: dac: fix future recursive dependencies
  HID: mcp2221: switch i2c registration to devm functions
  HID: mcp2221: add ADC/DAC support via iio subsystem

 drivers/hid/Kconfig       |   1 +
 drivers/hid/hid-mcp2221.c | 309 ++++++++++++++++++++++++++++++++++----
 drivers/i2c/muxes/Kconfig |   2 +-
 drivers/iio/adc/Kconfig   |   3 +-
 drivers/iio/dac/Kconfig   |   6 +-
 5 files changed, 288 insertions(+), 33 deletions(-)