* usage of height and width in fb_var_screeninfo
@ 2012-03-22 11:52 Jun Nie
2012-03-22 12:15 ` Geert Uytterhoeven
2012-03-26 8:15 ` Jingoo Han
0 siblings, 2 replies; 3+ messages in thread
From: Jun Nie @ 2012-03-22 11:52 UTC (permalink / raw)
To: linux-fbdev
Does anyone happen to know the usage of below member in
fb_var_screeninfo? I do not know whether mm stand for geometry size or
memory, can not find its usage in any driver neither. We considering
to use it as zoomed size.
struct fb_var_screeninfo {
__u32 height; /* height of picture in mm */
__u32 width; /* width of picture in mm */
Jun
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: usage of height and width in fb_var_screeninfo
2012-03-22 11:52 usage of height and width in fb_var_screeninfo Jun Nie
@ 2012-03-22 12:15 ` Geert Uytterhoeven
2012-03-26 8:15 ` Jingoo Han
1 sibling, 0 replies; 3+ messages in thread
From: Geert Uytterhoeven @ 2012-03-22 12:15 UTC (permalink / raw)
To: linux-fbdev
On Thu, Mar 22, 2012 at 12:52, Jun Nie <niej0001@gmail.com> wrote:
> Does anyone happen to know the usage of below member in
> fb_var_screeninfo? I do not know whether mm stand for geometry size or
> memory, can not find its usage in any driver neither. We considering
> to use it as zoomed size.
>
> struct fb_var_screeninfo {
> __u32 height; /* height of picture in mm */
> __u32 width; /* width of picture in mm */
They are both geometry sizes in millimeters.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
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
^ permalink raw reply [flat|nested] 3+ messages in thread* RE: usage of height and width in fb_var_screeninfo
2012-03-22 11:52 usage of height and width in fb_var_screeninfo Jun Nie
2012-03-22 12:15 ` Geert Uytterhoeven
@ 2012-03-26 8:15 ` Jingoo Han
1 sibling, 0 replies; 3+ messages in thread
From: Jingoo Han @ 2012-03-26 8:15 UTC (permalink / raw)
To: linux-fbdev
On Thu, Mar 22, 2012 at 8:53, Jun Nie <niej0001@gmail.com> wrote:
> Does anyone happen to know the usage of below member in
> fb_var_screeninfo? I do not know whether mm stand for geometry size or
> memory, can not find its usage in any driver neither. We considering
> to use it as zoomed size.
>
> struct fb_var_screeninfo {
> __u32 height; /* height of picture in mm */
> __u32 width; /* width of picture in mm */
>
Yes, right. Both thins are geometry sizes of LCD panel in millimeters.
Some OS platform needs these parameters.
Good luck.
Best regards,
Jingoo Han
^ permalink raw reply [flat|nested] 3+ messages in thread
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2012-03-22 11:52 usage of height and width in fb_var_screeninfo Jun Nie
2012-03-22 12:15 ` Geert Uytterhoeven
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