CVSROOT: /cvs
Module name: src
Changes by: kette...@cvs.openbsd.org 2021/10/31 09:12:00
Modified files:
sys/dev/fdt : imxspi.c mvspi.c
sys/dev/spi : spivar.h
Log message:
Extend the SPI bus API a bit. The config structure gets an sc_cs_delay
member to allow us to specify a delay between assert the CS# signal and
starting the clock. And the transfer function gains a flags argument,
which can be used to specify a new SPI_KEEP_CS flag to keep CS# asserted
after the transfer. This allows us to do another transfer immediately
afterwards without de-asserting CS# which is necessary for sending
commands to the upcoming Apple M1 keyboard/touchpad driver.
ok patrick@
