d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
773e3a71b2
freebsd-dev/sys/conf
History
Emmanuel Vadot 1961a14a47 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
2022-01-25 16:15:39 +01:00
..
config.mk mips: Remove sys/mips 2021-12-30 20:57:24 -07:00
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 2022-01-25 16:15:39 +01:00
files.amd64 ice_ddp: Update to 1.3.27.0 2022-01-24 18:25:56 -08:00
files.arm arm: add dwc3 as a compilable driver 2021-12-23 10:36:51 -08:00
files.arm64 ice_ddp: Update to 1.3.27.0 2022-01-24 18:25:56 -08:00
files.i386 x86: Speed up clock calibration 2022-01-12 12:34:07 -08:00
files.powerpc ice_ddp: Update to 1.3.27.0 2022-01-24 18:25:56 -08:00
files.riscv riscv: gdb(4) support 2022-01-10 13:40:12 -04:00
files.x86 x86/apic: remove apic_ops 2022-01-18 10:19:04 +01:00
kern.mk mips: Remove sys/mips 2021-12-30 20:57:24 -07:00
kern.opts.mk Add clarifying comments 2022-01-02 00:30:58 -07:00
kern.post.mk amd64: Only build aout.ko when COMPAT_FREEBSD32 is enabled 2021-12-07 02:10:48 +02:00
kern.pre.mk mips: Remove sys/mips 2021-12-30 20:57:24 -07:00
kmod_syms_prefix.awk
kmod_syms.awk kmod_syms.awk: fix removal of the export list from the symbol table 2021-11-18 15:56:24 +02:00
kmod.mk linuxkpi: Add i2c support 2022-01-25 16:15:39 +01:00
kmod.opts.mk Add a kmod.opts.mk. 2019-11-21 18:14:26 +00:00
ldscript.amd64 amd64: do not assume that kernel is loaded at 2M physical 2021-07-31 16:53:42 +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 arm64: add read_frequently, read_mostluy and exclusive_cache_line to linker script 2021-08-23 15:22:17 +02:00
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.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 ipq4018: add TCSR definitions from Linux. 2021-10-18 19:18:01 +00:00
Makefile.arm64 arm64: Don't rely on host readelf for u-boot booti image generation 2021-12-24 19:25:20 +00:00
Makefile.i386 Retire CLANG_NO_IAS34 2018-11-01 23:11:47 +00:00
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 newvers.sh: better regexp for the FreeBSD_version line 2021-04-22 11:45:12 -06:00
NOTES Remove an obsolete warning from NOTES 2022-01-03 13:00:50 -05:00
options ed: Remove options 2021-12-09 17:41:39 -07:00
options.amd64 linux(4): Get rid of Linuxulator kernel build options. 2021-06-22 08:32:39 +03:00
options.arm arm: allow the debug stuff in CP14 to be disabled at compile time 2021-10-18 19:18:56 +00:00
options.arm64 Per-thread stack canary on arm64 2021-11-26 14:44:00 +00:00
options.i386 Retire synchronous PPP kernel driver sppp(4). 2021-10-22 11:41:36 -07:00
options.powerpc powerpc/pseries: Allow radix pmap in pseries for ISA 3.0 2021-08-11 19:07:04 -05:00
options.riscv
std.nodebug std.nodebug: turn off net80211 debugging as well 2021-11-24 18:06:20 +00:00
sysent.mk sysent: regenerate files every time 2021-12-16 20:56:28 -06:00
systags.sh Fix kernel-tags target. 2020-01-23 13:56:12 +00:00
vdso_amd64_ia32.ldscript vdso for ia32 on amd64 2021-12-06 20:46:49 +02:00
vdso_amd64.ldscript amd64: wrap 64bit sigtramp into vdso 2021-12-06 20:46:49 +02:00
WITHOUT_SOURCELESS
WITHOUT_SOURCELESS_HOST
WITHOUT_SOURCELESS_UCODE retire cx,ctau drivers 2020-03-20 16:50:19 +00:00