staging: vc04_services: Support sending data to MMAL ports

Add the ability to send data to ports. This only supports
zero copy mode as the required bulk transfer setup calls
are not done.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>

diff --git a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
index 9e7524c..da89823 100644 (file)
--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
+++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
@@ -419,11 +419,19 @@ buffer_from_host(struct vchiq_mmal_instance *instance,
        m.u.buffer_from_host.buffer_header.data =
                (u32)(unsigned long)buf->buffer;
        m.u.buffer_from_host.buffer_header.alloc_size = buf->buffer_size;
-       m.u.buffer_from_host.buffer_header.length = 0;  /* nothing used yet */
-       m.u.buffer_from_host.buffer_header.offset = 0;  /* no offset */
-       m.u.buffer_from_host.buffer_header.flags = 0;   /* no flags */
-       m.u.buffer_from_host.buffer_header.pts = MMAL_TIME_UNKNOWN;
-       m.u.buffer_from_host.buffer_header.dts = MMAL_TIME_UNKNOWN;
+       if (port->type == MMAL_PORT_TYPE_OUTPUT) {
+               m.u.buffer_from_host.buffer_header.length = 0;
+               m.u.buffer_from_host.buffer_header.offset = 0;
+               m.u.buffer_from_host.buffer_header.flags = 0;
+               m.u.buffer_from_host.buffer_header.pts = MMAL_TIME_UNKNOWN;
+               m.u.buffer_from_host.buffer_header.dts = MMAL_TIME_UNKNOWN;
+       } else {
+               m.u.buffer_from_host.buffer_header.length = buf->length;
+               m.u.buffer_from_host.buffer_header.offset = 0;
+               m.u.buffer_from_host.buffer_header.flags = buf->mmal_flags;
+               m.u.buffer_from_host.buffer_header.pts = buf->pts;
+               m.u.buffer_from_host.buffer_header.dts = buf->dts;
+       }
 
        /* clear buffer type specific data */
        memset(&m.u.buffer_from_host.buffer_header_type_specific, 0,