[PATCH RESEND v3 0/5] iio: adc: qcom-spmi-vadc: Propagate fw node label to userspace

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Implement read_label in qcom-spmi-vadc to see DT-specified label names
in userspace.  At the same time clear up some documentation around
extend_name to promote read_label, and normalize similar code in
qcom-spmi-adc5.

v3 resend: added missing to/cc addresses via b4 prep --auto-to-cc.

Changes since v2:
- Dropped RFC tag;
- Reworded @extend_name deprecation comment.

v2: https://lore.kernel.org/r/20230116220909.196926-1-marijn.suijten@xxxxxxxxxxxxxx

Changes since v1:
- qcom-spmi-vadc: Use read_label instead of extend_name.

New since v1:
- core: Point users of extend_name field to read_label callback
- qcom-spmi-adc5: Use datasheet_name string literal for
  iio_chan_spec::datasheet_name;
- qcom-spmi-adc5: Fall back to datasheet_name instead of
  fwnode_get_name() for iio_chan_spec::extend_name (gets rid of @xx in
  sysfs filenames and labels);
- qcom-spmi-adc5: Remove unnecessary datasheet_name NULL check.

v1: https://lore.kernel.org/linux-arm-msm/20221106193018.270106-1-marijn.suijten@xxxxxxxxxxxxxx/
---
Marijn Suijten (5):
      iio: core: Point users of extend_name field to read_label callback
      iio: adc: qcom-spmi-adc5: Use driver datasheet_name instead of DT label
      iio: adc: qcom-spmi-adc5: Fall back to datasheet_name instead of fwnode name
      iio: adc: qcom-spmi-adc5: Remove unnecessary datasheet_name NULL check
      iio: adc: qcom-spmi-vadc: Propagate fw node label to userspace

 drivers/iio/adc/qcom-spmi-adc5.c | 15 +++++++--------
 drivers/iio/adc/qcom-spmi-vadc.c | 19 ++++++++++++++++++-
 include/linux/iio/iio.h          |  3 +++
 3 files changed, 28 insertions(+), 9 deletions(-)
---
base-commit: 92e815cf07ed24ee1c51b122f24ffcf2964b4b13
change-id: 20230502-iio-adc-propagate-fw-node-label-b1fff2e63ae8



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