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staging: vc04_services: Support sending data to MMAL ports

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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>
This commit is contained in:
Dave Stevenson
2018-09-24 18:26:02 +01:00
committed by Dom Cobley
parent 85ff298df2
commit d1bfdde817
1 changed files with 13 additions and 5 deletions
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18
drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
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@@ -420,11 +420,19 @@ 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,