CVS commit: src/sys/dev/spi

["Tobias Nygren" <tnn%netbsd.org@localhost>]

Module Name:    src
Committed By:   tnn
Date:           Thu Aug 19 11:04:21 UTC 2021

Modified Files:
        src/sys/dev/spi: ssdfb_spi.c

Log Message:
ssdfb_spi: fix issues with command xfers needed for SSD1306 & SH1106

These controllers require D/C# to be deasserted for the entire duration
of the command, contrary to docs and how newer controllers like SSD1353
behave. Probably this is needed for all controllers that do not have the
WRITE_RAM (0x5c) command. Also support using alternate padding commands
for 3-wire mode when WRITE_RAM is not available.


To generate a diff of this commit:
cvs rdiff -u -r1.9 -r1.10 src/sys/dev/spi/ssdfb_spi.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.