src/sys/modules/ow, branch releng/12.2

src/sys/modules/ow, branch releng/12.2 FreeBSD source tree https://cgit-dev.freebsd.org/src/atom?h=releng%2F12.2 2017-03-04T10:10:17Z sys/modules: normalize .CURDIR-relative paths to SRCTOP 2017-03-04T10:10:17Z Enji Cooper ngie@FreeBSD.org 2017-03-04T10:10:17Z urn:sha1:193d9e768ba63fcfb187cfd17f461f7d41345048 This simplifies make output/logic Tested with: `cd sys/modules; make ALL_MODULES=` on amd64 MFC after: 1 month Sponsored by: Dell EMC Isilon New 1-Wire bus implementation. 1-Wire controller is abstracted, though 2015-08-27T23:33:38Z Warner Losh imp@FreeBSD.org 2015-08-27T23:33:38Z urn:sha1:ae1f3df43466466a21c7da0df93ecb58a3e53d74 only gpiobus configured via FDT is supported. Bus enumeration is supported. Devices are created for each device found. 1-Wire temperature controllers are supported, but other drivers could be written. Temperatures are polled and reported via a sysctl. Errors are reported via sysctl counters. Mis-wired bus detection is included for more trouble shooting. See ow(4), owc(4) and ow_temp(4) for details of what's supported and known issues. This has been tested on Raspberry Pi-B, Pi2 and Beagle Bone Black with up to 7 devices. Differential Revision: https://reviews.freebsd.org/D2956 Relnotes: yes MFC after: 2 weeks Reviewed by: loos@ (with many insightful comments)