[Bug 274804] [PATCH] KERNCONF=GENERIC-VCHIQ enable HDMI AUDIO on Raspberry Pi 4B,400,3B

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=274804

            Bug ID: 274804
           Summary: [PATCH]  KERNCONF=GENERIC-VCHIQ enable HDMI AUDIO on
                    Raspberry Pi 4B,400,3B
           Product: Base System
           Version: 14.0-STABLE
          Hardware: arm64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: arm
          Assignee: freebsd-arm@FreeBSD.org
          Reporter: wb7odyfred@yahoo.com

Created attachment 245983
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=245983&action=edit
tar.gz  compressed file containing several patch files. example CLI   patch <
vchiq_arm.c.patch

Testing Support of Marcos Patch review D37878 
https://reviews.freebsd.org/D37878
 for Supporting Raspberry Pi 4B HDMI AUDIO output on HDMI TV Speakers.
Must be a newer code commit review somewhere.
Does someone build Raspberry Pi 4B  FreeBSD kernel code with GENERIC-VCHIQ for
a test?

https://forums.raspberrypi.com/viewtopic.php?t=343233  Fred Finster post to
Raspberry Pi Forums on using Marcos patch file.
https://bsdnow.tv/489  minutes 12:00-17:00 Speak about the above forums Post.

# Check for existence of configuration file  GENERIC-VCHIQ
ls -l /usr/src/sys/arm64/conf/GENERIC-VCHIQ
# Build the kernel
make -j4 buildkernel TARGET_ARCH=aarch64  KERNCONF=GENERIC-VCHIQ

many errors of Format string size not matching, the argument size being passed
Since most of these error where in debug log messages 
Changed (unsigned int) into (unsigned long)
Changed format string from %x  to %lx

vchiq_core.h 
added for arm64 bit  'dsb(sy)'  where for armv7a 'dsb()'

#if defined(__arm64__)
 dsb(sy)
#else  
 dsb()
#endif 

Yes, I had Compile fail error for ROCKPI device 'dsb()'   so changed both sides
of logic if dsb(sy) else dsb(sy) endif

Yes, know that is bad form, to NOT support armv7a 32bit C functions. Someone
smarter than I, can offer code change to make 64/32 bit function proper.

Happy with the FreeBSD.org/where RPI arm64 snapshot images, so far.

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