/* SPDX-License-Identifier: GPL-2.0 */ /* * Broadcom BCM2835 V4L2 driver * * Copyright © 2013 Raspberry Pi (Trading) Ltd. * * Authors: Vincent Sanders @ Collabora * Dave Stevenson @ Broadcom * (now [email protected]) * Simon Mellor @ Broadcom * Luke Diamand @ Broadcom */ /* MMAL_PORT_TYPE_T */ enum mmal_port_type { … }; /* The port is pass-through and doesn't need buffer headers allocated */ #define MMAL_PORT_CAPABILITY_PASSTHROUGH … /* *The port wants to allocate the buffer payloads. * This signals a preference that payload allocation should be done * on this port for efficiency reasons. */ #define MMAL_PORT_CAPABILITY_ALLOCATION … /* * The port supports format change events. * This applies to input ports and is used to let the client know * whether the port supports being reconfigured via a format * change event (i.e. without having to disable the port). */ #define MMAL_PORT_CAPABILITY_SUPPORTS_EVENT_FORMAT_CHANGE … /* * mmal port structure (MMAL_PORT_T) * * most elements are informational only, the pointer values for * interogation messages are generally provided as additional * structures within the message. When used to set values only the * buffer_num, buffer_size and userdata parameters are writable. */ struct mmal_port { … };
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