git.openwrt.org Git - openwrt/staging/xback.git/blob

   1 From 956fd55c1071c48f00285d82507698c501633e7a Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.org>
   3 Date: Fri, 13 Sep 2019 15:11:47 +0100
   4 Subject: [PATCH] staging: bcm2835-codec: Correct g/s_selection API
   5  MPLANE support
   6
   7 The g_selection and s_selection API is messed up and requires
   8 the driver to expect the non-MPLANE buffer types, not the MPLANE
   9 ones even if they are supported. The V4L2 core will convert the
  10 MPLANE ones to non-MPLANE should they be passed in
  11
  12 Fixes: 5e484a3 staging: bcm2835-codec: switch to multi-planar API
  13 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
  14 ---
  15  .../bcm2835-codec/bcm2835-v4l2-codec.c        | 67 +++++++++++++------
  16  1 file changed, 47 insertions(+), 20 deletions(-)
  17
  18 --- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
  19 +++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
  20 @@ -1260,17 +1260,30 @@ static int vidioc_g_selection(struct fil
  21  {
  22         struct bcm2835_codec_ctx *ctx = file2ctx(file);
  23         struct bcm2835_codec_q_data *q_data;
  24 -       bool capture_queue = s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ?
  25 -                                                               true : false;
  26
  27 -       if ((ctx->dev->role == DECODE && !capture_queue) ||
  28 -           (ctx->dev->role == ENCODE && capture_queue))
  29 -               /* OUTPUT on decoder and CAPTURE on encoder are not valid. */
  30 -               return -EINVAL;
  31 -
  32 -       q_data = get_q_data(ctx, s->type);
  33 -       if (!q_data)
  34 +       /*
  35 +        * The selection API takes V4L2_BUF_TYPE_VIDEO_CAPTURE and
  36 +        * V4L2_BUF_TYPE_VIDEO_OUTPUT, even if the device implements the MPLANE
  37 +        * API. The V4L2 core will have converted the MPLANE variants to
  38 +        * non-MPLANE.
  39 +        * Open code this instead of using get_q_data in this case.
  40 +        */
  41 +       switch (s->type) {
  42 +       case V4L2_BUF_TYPE_VIDEO_CAPTURE:
  43 +               /* CAPTURE on encoder is not valid. */
  44 +               if (ctx->dev->role == ENCODE)
  45 +                       return -EINVAL;
  46 +               q_data = &ctx->q_data[V4L2_M2M_DST];
  47 +               break;
  48 +       case V4L2_BUF_TYPE_VIDEO_OUTPUT:
  49 +               /* OUTPUT on deoder is not valid. */
  50 +               if (ctx->dev->role == DECODE)
  51 +                       return -EINVAL;
  52 +               q_data = &ctx->q_data[V4L2_M2M_SRC];
  53 +               break;
  54 +       default:
  55                 return -EINVAL;
  56 +       }
  57
  58         switch (ctx->dev->role) {
  59         case DECODE:
  60 @@ -1323,22 +1336,36 @@ static int vidioc_s_selection(struct fil
  61  {
  62         struct bcm2835_codec_ctx *ctx = file2ctx(file);
  63         struct bcm2835_codec_q_data *q_data = NULL;
  64 -       bool capture_queue = s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ?
  65 -                                                               true : false;
  66 +
  67 +       /*
  68 +        * The selection API takes V4L2_BUF_TYPE_VIDEO_CAPTURE and
  69 +        * V4L2_BUF_TYPE_VIDEO_OUTPUT, even if the device implements the MPLANE
  70 +        * API. The V4L2 core will have converted the MPLANE variants to
  71 +        * non-MPLANE.
  72 +        *
  73 +        * Open code this instead of using get_q_data in this case.
  74 +        */
  75 +       switch (s->type) {
  76 +       case V4L2_BUF_TYPE_VIDEO_CAPTURE:
  77 +               /* CAPTURE on encoder is not valid. */
  78 +               if (ctx->dev->role == ENCODE)
  79 +                       return -EINVAL;
  80 +               q_data = &ctx->q_data[V4L2_M2M_DST];
  81 +               break;
  82 +       case V4L2_BUF_TYPE_VIDEO_OUTPUT:
  83 +               /* OUTPUT on deoder is not valid. */
  84 +               if (ctx->dev->role == DECODE)
  85 +                       return -EINVAL;
  86 +               q_data = &ctx->q_data[V4L2_M2M_SRC];
  87 +               break;
  88 +       default:
  89 +               return -EINVAL;
  90 +       }
  91
  92         v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "%s: ctx %p, type %d, q_data %p, target %d, rect x/y %d/%d, w/h %ux%u\n",
  93                  __func__, ctx, s->type, q_data, s->target, s->r.left, s->r.top,
  94                  s->r.width, s->r.height);
  95
  96 -       if ((ctx->dev->role == DECODE && !capture_queue) ||
  97 -           (ctx->dev->role == ENCODE && capture_queue))
  98 -               /* OUTPUT on decoder and CAPTURE on encoder are not valid. */
  99 -               return -EINVAL;
 100 -
 101 -       q_data = get_q_data(ctx, s->type);
 102 -       if (!q_data)
 103 -               return -EINVAL;
 104 -
 105         switch (ctx->dev->role) {
 106         case DECODE:
 107                 switch (s->target) {