staging: pi433: add debugfs interface

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This adds debugfs interface that can be used for debugging possible
hardware/software issues.

It currently exposes the following debugfs entries for each SPI device
probed:

  /sys/kernel/debug/pi433/<DEVICE>/regs
  ...

The 'regs' file contains all rf69 uC registers values that are useful
for troubleshooting misconfigurations between 2 devices. It contains one
register per line so it should be easy to use normal filtering tools to
find the registers of interest if needed.

Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Paulo Miguel Almeida <paulo.miguel.almeida.rodenas@gmail.com>
Link: https://lore.kernel.org/r/YfzeEHJcd+qvYGZ8@mail.google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Paulo Miguel Almeida 2022-02-04 21:04:32 +13:00 • committed by Greg Kroah-Hartman

parent 04952a99cb

commit 4ef027d5a3

3 changed files with 78 additions and 1 deletions

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76

drivers/staging/pi433/pi433_if.c

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2

drivers/staging/pi433/rf69.c

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1

drivers/staging/pi433/rf69.h

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