[PATCH 1/3] include: fb: Add definiton for window positioning structure

[Ajay kumar]

Hi Baruch,

On Tue, Sep 20, 2011 at 4:54 PM, Baruch Siach <baruch at tkos.co.il> wrote:
> Hi Ajay,
>
> On Tue, Sep 20, 2011 at 11:30:39AM -0400, Ajay Kumar wrote:
>> This patch adds a data structure definiton to hold framebuffer windows/planes.
>> An ioctl number is also added to provide user access
>> to change window position dynamically.
>
> [snip]
>
>> +/* Window overlaying */
>> +struct fb_overlay_win_pos {
>> +     __u32 win_pos_x;        /* x-offset from LCD(0,0) where window starts */
>> +     __u32 win_pos_y;        /* y-offset from LCD(0,0) where window starts */
>> +};
>
> Why not allow negative offsets where the left or upper part of the framebuffer
> is hidden?

Thanks for pointing it out. Are there drivers which place the overlay
windows such that some part of the window is hidden from being
displayed on the screen?

> baruch
>
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Ajay