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Emmanuel Vadot 7f14bc4402 linuxkpi: Add i2c support 
Add i2c support to linuxkpi. This is needed by drm-kmod.
For every i2c_adapter added by i2c_add_adapter we add a child to the
device named "lkpi_iic". This child handle the conversion between
Linux i2c_msgs to FreeBSD iic_msgs.
For every i2c_adapter added by i2c_bit_add_bus we add a child to the
device named "lkpi_iicbb". This child handle the conversion between
Linux i2c_msgs to FreeBSD iic_msgs.
With the help of iic(4), this expose the i2c controller to userspace
allowing a user to query DDC information from a monitor.
e.g.: i2c -f /dev/iic0 -a 0x28 -c 128 -d r
will query the standard EDID from the monitor if plugged.

The bitbang part (lkpi_iicbb) isn't tested at all for now as I don't have
compatible hardware (all my hardware have native i2c controller).

Tested on:	Intel (SandyBridge, Skylake, ApolloLake)
Tested on:	AMD (Picasso, Polaris (amd64 and arm64))

MFC after:	1 month
Reviewed by:	hselasky
Sponsored by:	Beckhoff Automation GmbH & Co. KG
Differential Revision:	https://reviews.freebsd.org/D33053

(cherry picked from commit 1961a14a47)
2022-06-21 17:13:57 +02:00
..
config.mk Add SCTP_SUPPORT handling to config.mk. 2020-06-25 15:25:00 +00:00
dtb.build.mk Switch to the new device-tree vendor tree 2021-01-15 20:08:39 +01:00
dtb.mk Allow kernel config to specify DTS/DTSO to build, and out-of-tree support 2019-03-26 02:45:23 +00:00
files linuxkpi: Add i2c support 2022-06-21 17:13:57 +02:00
files.amd64 linux(4): Get rid of Linuxulator kernel build options. 2022-06-17 22:30:22 +03:00
files.arm netinet: Deduplicate most in_cksum() implementations 2021-12-01 07:42:43 -05:00
files.arm64 Support LSE atomics in the arm64 casue* functions 2022-06-07 15:20:18 +01:00
files.i386 linux(4): Get rid of Linuxulator kernel build options. 2022-06-17 22:30:22 +03:00
files.mips netinet: Deduplicate most in_cksum() implementations 2021-12-01 07:42:43 -05:00
files.powerpc ice(4): Update to 1.34.2-k 2022-03-07 16:11:46 -08:00
files.riscv files: Make ext_resources non-optional 2022-05-16 14:53:15 +02:00
files.x86 linux(4): Get rid of Linuxulator kernel build options. 2022-06-17 22:30:22 +03:00
kern.mk Disable -Wreturn-type on GCC. 2022-05-10 17:11:44 -07:00
kern.opts.mk WITH_OFED build option: fix 2021-02-05 03:27:33 +02:00
kern.post.mk amd64: Only build aout.ko when COMPAT_FREEBSD32 is enabled 2021-12-14 02:44:01 +02:00
kern.pre.mk infiniband: Disable -Wredundant-decl warnings. 2022-05-10 15:51:49 -07:00
kmod.mk linuxkpi: Add i2c support 2022-06-21 17:13:57 +02:00
kmod.opts.mk Add a kmod.opts.mk. 2019-11-21 18:14:26 +00:00
kmod_syms.awk kmod_syms.awk: fix removal of the export list from the symbol table 2021-11-25 03:09:21 +02:00
kmod_syms_prefix.awk Add the infrastructure to support loading multiple versions of TCP 2017-06-08 20:41:28 +00:00
ldscript.amd64 amd64: do not assume that kernel is loaded at 2M physical 2021-08-24 02:21:13 +03:00
ldscript.arm Eliminate the generated ldscript for arm and arm64, and strip $a/$d marker 2019-12-29 18:17:12 +00:00
ldscript.arm64 More the arm64 early page tables and stack to .bss 2020-12-23 13:10:23 +00:00
ldscript.i386 Expose the kernel's build-ID through sysctl 2019-06-04 13:07:10 +00:00
ldscript.kmod.amd64 Move PLTs to the beginning of amd64 kernel modules. 2020-09-16 13:51:47 +00:00
ldscript.kmod.i386 Formalize the use of linker scripts for kernel modules. 2019-10-16 22:19:56 +00:00
ldscript.mips Expose the kernel's build-ID through sysctl 2019-06-04 13:07:10 +00:00
ldscript.mips.cfe Expose the kernel's build-ID through sysctl 2019-06-04 13:07:10 +00:00
ldscript.mips.mips64 Expose the kernel's build-ID through sysctl 2019-06-04 13:07:10 +00:00
ldscript.mips.octeon1 Fix linking OCTEON1 kernel with LLD 2020-03-22 22:18:00 +00:00
ldscript.powerpc [PowerPC] kernel ifunc support for powerpc*, fix ppc64 relocation oddities. 2020-05-07 19:32:49 +00:00
ldscript.powerpc64 [PowerPC] Fix build-id note on powerpc64 kernel 2020-06-01 19:40:59 +00:00
ldscript.powerpc64le [PowerPC64LE] Set up powerpc.powerpc64le architecture 2020-09-22 23:49:30 +00:00
ldscript.powerpcspe [PowerPC] kernel ifunc support for powerpc*, fix ppc64 relocation oddities. 2020-05-07 19:32:49 +00:00
ldscript.riscv Set the LMA of the riscv kernel to the OpenSBI jump target by default 2020-02-04 00:06:16 +00:00
Makefile.amd64 Don't try ctfconvert on file without debug info. 2020-04-28 16:09:25 +00:00
Makefile.arm Switch to the new device-tree vendor tree 2021-01-15 20:08:39 +01:00
Makefile.arm64 arm64: Don't rely on host readelf for u-boot booti image generation 2022-01-24 23:59:51 +00:00
Makefile.i386 Retire CLANG_NO_IAS34 2018-11-01 23:11:47 +00:00
Makefile.mips mips: Fix build of kernel.tramp.bin after upstream merge 2021-12-06 17:30:10 +01:00
Makefile.powerpc Remove tests for obsolete compilers in the build system 2020-05-12 15:22:40 +00:00
Makefile.riscv riscv: Add the device-tree path to the include path 2021-01-16 11:31:17 +01:00
newvers.sh Rename stable/13 to -STABLE now that releng/13.1 has branched 2022-03-09 19:11:29 -05:00
NOTES linux(4): Get rid of Linuxulator kernel build options. 2022-06-17 22:30:22 +03:00
options ed: Remove options 2022-02-22 11:44:56 -07:00
options.amd64 linux(4): Get rid of Linuxulator kernel build options. 2022-06-17 22:30:22 +03:00
options.arm Remove unused options. 2020-11-29 17:42:32 +00:00
options.arm64 Per-thread stack canary on arm64 2021-12-20 11:09:27 +00:00
options.i386 hyperv: Fix vmbus after the i386 4/4 split 2021-06-21 21:09:17 -04:00
options.mips Remove remaning definition of GFB_<foo> options. 2020-12-05 19:44:00 +00:00
options.powerpc Remove remaning definition of GFB_<foo> options. 2020-12-05 19:44:00 +00:00
options.riscv o Add driver for PLIC (Platform-Level Interrupt Controller) device. 2018-06-12 17:45:15 +00:00
std.nodebug Exclude DEBUG_VFS_LOCKS from non-debug kernel configs 2022-06-05 04:23:20 +03:00
sysent.mk Rebuild sysent when capabilities.conf is updated. 2020-07-07 16:35:52 +00:00
systags.sh Fix kernel-tags target. 2020-01-23 13:56:12 +00:00
vdso_amd64.ldscript vdso linker scripts: explicitly specify output arch and target 2022-02-18 04:01:24 +02:00
vdso_amd64_ia32.ldscript vdso linker scripts: explicitly specify output arch and target 2022-02-18 04:01:24 +02:00
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