Den 22.01.2015 21:42, skrev Geert Uytterhoeven:
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.
Ok, so I'm out of luck, unless I patch this up myself :-) (which didn't
look very complicated btw, as you say they look very similar)
Thanks for your help.
Noralf.
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