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media: atomisp: report the visible resolution

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The atomisp sensors and logic adds an extra pad lines/columns,
called "dvs envelope". It also uses an extra 12 lines/columns
at the sensor for BYT.

As those are not visible to userspace, the V4L2 API should
decrement such values when reporting the current resolution.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Mauro Carvalho Chehab 2021-10-31 09:38:51 +00:00
parent 5380c4cfeb
commit 03723b9248
1 changed files with 14 additions and 0 deletions
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14
drivers/staging/media/atomisp/pci/atomisp_ioctl.c
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@ -876,6 +876,20 @@ static int atomisp_g_fmt_cap(struct file *file, void *fh,
v4l2_fill_pix_format(&f->fmt.pix, &fmt.format);
f->fmt.pix.pixelformat = fmtdesc.pixelformat;
/*
* HACK: The atomisp does something different here, as it
* seems to set the sensor to a slightly higher resolution than
* the visible ones. That seems to be needed by atomisp's ISP
* in order to properly handle the frames. So, s_fmt adds 16
* extra columns/lines. See atomisp_subdev_set_selection().
*
* Yet, the V4L2 userspace API doesn't expect those, so it
* needs to be decremented when reporting the visible
* resolution to userspace.
*/
f->fmt.pix.width -= pad_w;
f->fmt.pix.height -= pad_h;
}
depth = atomisp_get_pixel_depth(f->fmt.pix.pixelformat);