spi: spidev_test: new features

Jonas Rebmann <jre@pengutronix.de> says:

A collection of new features for spidev_test which have collected during
testing/development of spi drivers.

Patch 1 is a small preparatory commit to share macro definitions with
the rest of the tools tree instead of keeping local copies.

Patch 2 improves usage help.

Patches 3 to 8 add the following options:

  -c, --compare        Compare RX against TX without enabling controller
		       loopback mode; useful when TX is physically
		       bridged to RX.
  -t, --no-tx          Do not provide a TX buffer.
  -r, --no-rx          Do not provide an RX buffer.
  -z, --nonzero        Skip 0x00 and 0xff bytes in the generated
                       random TX pattern so that a stuck line (pulled
                       high or low) does not produce a false positive
                       in compare mode.
  -P, --predictable    Send a deterministic byte sequence instead of
                       random data, so that runs can be compared e.g.
                       on an oscilloscope.
  -T, --transfers N    Split the message into N SPI transfers inside a
                       single SPI_IOC_MESSAGE() ioctl, exercising the
                       controller's multi-transfer handling.

Patch 9 resolves out of bounds issues when parsing escape sequences in
the -i (--input) parameter.

Link: https://patch.msgid.link/20260924-spi-sun4i-spidev_test-v7-0-126e31a07fdc@pengutronix.de

0 files changed, 0 insertions, 0 deletions