path: root/arch/sh
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authorSteve Sakoman <steve@sakoman.com>2018-09-20 09:20:34 -1000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-10-02 13:38:55 -0700
commitc550f01c810f2197c98e6e3103f81797f5e063be (patch)
treeb799d0991c3aa188982b1bcdacd263b406e39f77 /arch/sh
parentMerge 4.19-rc6 into tty-next (diff)
serial:serial_core: Allow use of CTS for PPS line discipline
Add a "pps_4wire" file to serial ports in sysfs in case the kernel is configured with CONFIG_PPS_CLIENT_LDISC. Writing 1 to the file enables the use of CTS instead of DCD for PPS signal input. This is necessary in case a serial port is not completely wired. Though this affects PPS processing the patch is against the serial core as the source of the serial port PPS event dispatching has to be modified. Furthermore it should be possible to modify the source of serial port PPS event dispatching before changing the line discipline. Signed-off-by: Andreas Steinmetz <ast@domdv.de> Signed-off-by: Steve Sakoman <steve@sakoman.com> Tested-by: Steve Sakoman <steve@sakoman.com> Tested-by: Eric Gallimore <egallimore@ucsd.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/sh')
0 files changed, 0 insertions, 0 deletions