Re: fbcon gives mirrored fonts on monochrome display

["Noralf Trønnes" <notro@tronnes.org>]

Hi Geert,

Den 22.01.2015 20:44, skrev Geert Uytterhoeven:
> Hi Noralf,
>
> On Thu, Jan 22, 2015 at 7:47 PM, Noralf Trønnes <notro@tronnes.org> wrote:
>> I'm playing with a SSD1306 128x64 monochrome display and fbcon gives me
>> mirrored fonts and some extra lines.
>> fbdev config:
>>    info->var.bits_per_pixel = 1;
>>    info->fix.visual = FB_VISUAL_MONO10;
>>    info->var.red.length = 1;
>>    info->var.red.offset = 0;
>>    info->var.green.length = 1;
>>    info->var.green.offset = 0;
>>    info->var.blue.length = 1;
>>    info->var.blue.offset = 0;
>> Uses: sys_fillrect, sys_copyarea, sys_imageblit (and deferred_io)
>>
>> System: Raspberry Pi, ARM, Linux 3.18.3
>>
>> Does anyone see what this might be?
> What's the value on CONFIG_FB_CFB_REV_PIXELS_IN_BYTE in your .config?
$ 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;