Bug#825840: Possible fix for colour invertion on ATY,Rockhopper2

From	Mathieu Malaterre <malat@debian.org>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#825840: Possible fix for colour invertion on ATY,Rockhopper2
Date	2016-10-04 08:30 +0200
Message-ID	<soroJ-7em-7@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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Hi,

> Well it seems ATY,Rockhopper2 (not Rockhopper) in the Mac Mini is in fact
> a Radeon, and the way the radeonfb driver handles the pallete appears
> to match the cmap_radeon in offb, so perhaps this would work in offb.c

I had time to test this patch yesterday night. It did not work using
`cmap_radeon` codepath. I even tried changing:

out_le32(par->cmap_adr + 0xb4, (red << 16 | green << 8 | blue));

into:

out_le32(par->cmap_adr + 0xb4, (blue << 16 | green << 8 | red));

I am also thinking we are not looking at the right code.

I can see my `printk` messages so I know we are entering the
`cmap_radeon` codepath.

-M

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Bug#825840: Possible fix for colour invertion on ATY,Rockhopper2 Mathieu Malaterre <malat@debian.org> - 2016-10-04 08:30 +0200
  Bug#825840: Possible fix for colour invertion on ATY,Rockhopper2 lsorense@csclub.uwaterloo.ca (Lennart Sorensen) - 2016-10-04 15:50 +0200
    Bug#825840: Possible fix for colour invertion on ATY,Rockhopper2 Samuel Thibault <sthibault@debian.org> - 2016-10-04 16:00 +0200
      Bug#825840: Possible fix for colour invertion on ATY,Rockhopper2 lsorense@csclub.uwaterloo.ca (Lennart Sorensen) - 2016-10-04 16:50 +0200
        Bug#825840: Possible fix for colour invertion on ATY,Rockhopper2 Mathieu Malaterre <malat@debian.org> - 2016-10-04 17:00 +0200
          Bug#825840: Possible fix for colour invertion on ATY,Rockhopper2 lsorense@csclub.uwaterloo.ca (Lennart Sorensen) - 2016-10-04 17:10 +0200
        Bug#825840: Possible fix for colour invertion on ATY,Rockhopper2 lsorense@csclub.uwaterloo.ca (Lennart Sorensen) - 2016-10-04 22:30 +0200
          Bug#825840: Possible fix for colour invertion on ATY,Rockhopper2 Mathieu Malaterre <malat@debian.org> - 2016-10-05 18:50 +0200
            Bug#825840: Possible fix for colour invertion on ATY,Rockhopper2 lsorense@csclub.uwaterloo.ca (Lennart Sorensen) - 2016-10-05 19:50 +0200
              Bug#825840: Possible fix for colour invertion on ATY,Rockhopper2 Mathieu Malaterre <malat@debian.org> - 2016-10-05 21:00 +0200
                Bug#825840: Possible fix for colour invertion on ATY,Rockhopper2 lsorense@csclub.uwaterloo.ca (Lennart Sorensen) - 2016-10-05 21:30 +0200
                Bug#825840: Possible fix for colour invertion on ATY,Rockhopper2 Mathieu Malaterre <malat@debian.org> - 2016-10-06 07:50 +0200
                Bug#825840: Possible fix for colour invertion on ATY,Rockhopper2 lsorense@csclub.uwaterloo.ca (Lennart Sorensen) - 2016-10-06 16:20 +0200
                Bug#825840: Possible fix for colour invertion on ATY,Rockhopper2 Gianluca Renzi <icjtqr@gmail.com> - 2016-10-06 16:40 +0200
                Bug#825840: Possible fix for colour invertion on ATY,Rockhopper2 lsorense@csclub.uwaterloo.ca (Lennart Sorensen) - 2016-10-06 17:20 +0200
                Bug#825840: Possible fix for colour invertion on ATY,Rockhopper2 Mathieu Malaterre <malat@debian.org> - 2016-10-06 22:10 +0200
  Bug#825840: Possible fix for colour invertion on ATY,Rockhopper2 lsorense@csclub.uwaterloo.ca (Lennart Sorensen) - 2016-10-04 18:00 +0200

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