600f1b220b88e52ca090c76378ac226c4cb31c87
[oweals/openwrt.git] /
1 From a81fd46f130118ac4e18588eec81a630623145f6 Mon Sep 17 00:00:00 2001
2 From: Dave Stevenson <dave.stevenson@raspberrypi.org>
3 Date: Fri, 30 Nov 2018 16:00:54 +0000
4 Subject: [PATCH 284/703] staging: bcm2835-camera: Fix stride on RGB3/BGR3
5  formats
6
7 RGB3/BGR3 end up being 3 bytes per pixel, which meant that
8 the alignment code ended up trying to align using bitmasking
9 with a mask of 96.
10 That doesn't work, so switch to an arithmetic alignment for
11 those formats.
12
13 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
14 ---
15  .../bcm2835-camera/bcm2835-camera.c           | 26 ++++++++++++++-----
16  1 file changed, 20 insertions(+), 6 deletions(-)
17
18 --- a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
19 +++ b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
20 @@ -1008,13 +1008,27 @@ static int vidioc_try_fmt_vid_cap(struct
21                               1, 0);
22         f->fmt.pix.bytesperline = f->fmt.pix.width * mfmt->ybbp;
23         if (!mfmt->remove_padding) {
24 -               int align_mask = ((32 * mfmt->depth) >> 3) - 1;
25 -               /* GPU isn't removing padding, so stride is aligned to 32 */
26 -               f->fmt.pix.bytesperline =
27 -                       (f->fmt.pix.bytesperline + align_mask) & ~align_mask;
28 +               if (mfmt->depth == 24) {
29 +                       /*
30 +                        * 24bpp is a pain as we can't use simple masking.
31 +                        * Min stride is width aligned to 16, times 24bpp.
32 +                        */
33 +                       f->fmt.pix.bytesperline =
34 +                               ((f->fmt.pix.width + 15) & ~15) * 3;
35 +               } else {
36 +                       /*
37 +                        * GPU isn't removing padding, so stride is aligned to
38 +                        * 32
39 +                        */
40 +                       int align_mask = ((32 * mfmt->depth) >> 3) - 1;
41 +
42 +                       f->fmt.pix.bytesperline =
43 +                               (f->fmt.pix.bytesperline + align_mask) &
44 +                                                       ~align_mask;
45 +               }
46                 v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
47 -                        "Not removing padding, so bytes/line = %d, (align_mask %d)\n",
48 -                        f->fmt.pix.bytesperline, align_mask);
49 +                        "Not removing padding, so bytes/line = %d\n",
50 +                        f->fmt.pix.bytesperline);
51         }
52  
53         /* Image buffer has to be padded to allow for alignment, even though