Re: CVS commit: src

[Masanobu SAITOH <msaitoh%execsw.org@localhost>]

Background:

 In August 2014, lower-cased filename's files are added in the following
commit:

        https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/radeon?id=f333bd435c0b6745cbc4fae3326725d77bf57c82

This commit says those files use the new header format. The radeon's drmkms
driver basically try to use lower case's file first and then try the upper
case's one. [*1]

After the above commit, usually lower-case's files have been added and updated.
Two exceptions:

        TAHITI_vce.bin (only uppercase exists)
        BONAIRE_uvd.bin (both upper and lowe exist and both updated)

Some old (upper-case'd) firmware might be maintained anymore.

Now:
        Number of upper-cased filename's files: 158
        Number of lower-cased filename's files: 66
        Both lower-cased and upper-cased: 65

        kaveri_mec2.bin has only lowercase one.
        (see also:
        http://mail-index.netbsd.org/tech-x11/2019/04/07/msg001953.html)

[*1] For _mc*.bin:
        1st try: lower-case _mc.bin
        2nd try: upper-case _mc2.bin
        3rd try: upper-case _mc.bin

So, options are:

        a) Remove duplicated upper-cased files.

           pros: Simple. It's not required to modify radeon driver itself.
                 It also works with new kernel with old filesysysm.
           cons: If the driver failed to load the lower cased firmware,
                 driver can't read the upper-cased firmware.

        b) Rename upper-case'd file to another name e.g.: foo_bar_old.bin

           pros: It can be keep the driver's behavior the same as linux's.
           cons: We have to modify many files and lines.
                 If we support new kernel + old filesystem, we should modify
                 the driver to load FOO_BAR.bin first and then FOO_BAR_old.bin.

        c) keep the current status as it is.

           pros: Any additional work is not required.
           cons: have trouble on case-insensitive file system.

        d) Any other options.



-- 
-----------------------------------------------
                SAITOH Masanobu (msaitoh%execsw.org@localhost
                                 msaitoh%netbsd.org@localhost)