target/linux/brcm2708/patches-4.19/950-0238-staging-vc04_services-Support-sending-data-to-MMAL-p.patch

   1 From 483bef9dcddc4bcb9f4e250d91b31361a919b7ed Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.org>
   3 Date: Mon, 24 Sep 2018 18:26:02 +0100
   4 Subject: [PATCH] staging: vc04_services: Support sending data to MMAL
   5  ports
   6
   7 Add the ability to send data to ports. This only supports
   8 zero copy mode as the required bulk transfer setup calls
   9 are not done.
  10
  11 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
  12 ---
  13  .../vc04_services/vchiq-mmal/mmal-vchiq.c      | 18 +++++++++++++-----
  14  1 file changed, 13 insertions(+), 5 deletions(-)
  15
  16 --- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
  17 +++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
  18 @@ -428,11 +428,19 @@ buffer_from_host(struct vchiq_mmal_insta
  19         m.u.buffer_from_host.buffer_header.data =
  20                 (u32)(unsigned long)buf->buffer;
  21         m.u.buffer_from_host.buffer_header.alloc_size = buf->buffer_size;
  22 -       m.u.buffer_from_host.buffer_header.length = 0;  /* nothing used yet */
  23 -       m.u.buffer_from_host.buffer_header.offset = 0;  /* no offset */
  24 -       m.u.buffer_from_host.buffer_header.flags = 0;   /* no flags */
  25 -       m.u.buffer_from_host.buffer_header.pts = MMAL_TIME_UNKNOWN;
  26 -       m.u.buffer_from_host.buffer_header.dts = MMAL_TIME_UNKNOWN;
  27 +       if (port->type == MMAL_PORT_TYPE_OUTPUT) {
  28 +               m.u.buffer_from_host.buffer_header.length = 0;
  29 +               m.u.buffer_from_host.buffer_header.offset = 0;
  30 +               m.u.buffer_from_host.buffer_header.flags = 0;
  31 +               m.u.buffer_from_host.buffer_header.pts = MMAL_TIME_UNKNOWN;
  32 +               m.u.buffer_from_host.buffer_header.dts = MMAL_TIME_UNKNOWN;
  33 +       } else {
  34 +               m.u.buffer_from_host.buffer_header.length = buf->length;
  35 +               m.u.buffer_from_host.buffer_header.offset = 0;
  36 +               m.u.buffer_from_host.buffer_header.flags = buf->mmal_flags;
  37 +               m.u.buffer_from_host.buffer_header.pts = buf->pts;
  38 +               m.u.buffer_from_host.buffer_header.dts = buf->dts;
  39 +       }
  40
  41         /* clear buffer type sepecific data */
  42         memset(&m.u.buffer_from_host.buffer_header_type_specific, 0,