[PATCH v3 0/2] iio: adc: mcp3422: chip info and read_avail()

[Yuval Saar <thefireking@gmail.com>]

The MCP3422 family driver tells the parts apart with integer ids and
a switch in probe, and it exposes the sampling-frequency and scale
lists through custom sysfs show functions.

Move those differences into a per-chip structure, then publish the
lists with read_avail() so the IIO core creates the attributes and
in-kernel consumers can query them.

sampling_frequency_available stays shared by all.
in_voltage_scale_available stays shared by type. Shared by direction
would rename that file to in_scale_available.

No hardware. Each patch compiles. checkpatch --strict is clean, and
the available-list text was checked against the IIO core formatters.

v3:
- Split the chip-info change into its own precursor patch.
- Drop the sample-rate defines that only repeated the numeric value.
- Keep scale's available mask shared by type, so the sysfs name stays
  in_voltage_scale_available.
- Store scales as { integer, nano } pairs.
v2: https://lore.kernel.org/linux-iio/20260921044709.27d59a97@jic23-hlaptop/
v1: https://lore.kernel.org/linux-iio/20260919195507.94130-1-thefireking@gmail.com/

Yuval Saar (2):
  iio: adc: mcp3422: describe parts with chip_info
  iio: adc: mcp3422: use read_avail() for available attributes

 drivers/iio/adc/mcp3422.c | 191 +++++++++++++++++++++++---------------
 1 file changed, 114 insertions(+), 77 deletions(-)


base-commit: 69fa76f0af3414cc189c3b0b807cb59e327ecc00
-- 
2.43.0