Hi Noralf,
On Thu, Jan 22, 2015 at 9:38 PM, Noralf Trønnes <notro@xxxxxxxxxxx> wrote:
> Den 22.01.2015 20:59, skrev Geert Uytterhoeven:
>> On Thu, Jan 22, 2015 at 8:55 PM, Noralf Trønnes <notro@xxxxxxxxxxx> wrote:
>>> Den 22.01.2015 20:44, skrev Geert Uytterhoeven:
>>>> On Thu, Jan 22, 2015 at 7:47 PM, Noralf Trønnes <notro@xxxxxxxxxxx>
>>>> wrote:
>>>>> I'm playing with a SSD1306 128x64 monochrome display and fbcon gives me
>>>>> mirrored fonts and some extra lines.
>>> $ zgrep CONFIG_FB_CFB_REV_PIXELS_IN_BYTE /proc/config.gz
>>> # CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
>>>
>>>> Does your driver set FB_NONSTD_REV_PIX_IN_B?
>>>
>>> No it doesn't. I also tried setting it now, with no effect:
>>> info->var.nonstd = FB_NONSTD_REV_PIX_IN_B;
>>
>> The latter only seems to matter if CONFIG_FB_CFB_REV_PIXELS_IN_BYTE
>> is set, so please try the config option first.
>
>
> $ zgrep CONFIG_FB_CFB_REV_PIXELS_IN_BYTE /proc/config.gz
> CONFIG_FB_CFB_REV_PIXELS_IN_BYTE=y
>
> $ dmesg
> [ 365.595787] nonstd = 2
>
> It didn't change anything.
>
> I looked up the code that is affected by this change, and only the cbf*.c
> files use the rev/swap/shift functions from fb_draw.h
> I use the sys_* modules not cbf*
One more thing that's no longer in sync...
Ideally, the cfb* and sys* versions are identical, except that the former
operates on MMIO, and the latter on RAM.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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