1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Broadcom BM2835 V4L2 driver
5 * Copyright © 2013 Raspberry Pi (Trading) Ltd.
7 * Authors: Vincent Sanders <vincent.sanders@collabora.co.uk>
8 * Dave Stevenson <dsteve@broadcom.com>
9 * Simon Mellor <simellor@broadcom.com>
10 * Luke Diamand <luked@broadcom.com>
16 #define MMAL_FOURCC(a, b, c, d) ((a) | (b << 8) | (c << 16) | (d << 24))
17 #define MMAL_MAGIC MMAL_FOURCC('m', 'm', 'a', 'l')
19 /** Special value signalling that time is not known */
20 #define MMAL_TIME_UNKNOWN BIT_ULL(63)
22 struct mmal_msg_context;
24 /* mapping between v4l and mmal video modes */
27 u32 fourcc; /* v4l2 format id */
28 int flags; /* v4l2 flags field */
31 u32 mmal_component; /* MMAL component index to be used to encode */
32 u32 ybbp; /* depth of first Y plane for planar formats */
33 bool remove_padding; /* Does the GPU have to remove padding,
34 * or can we do hide padding via bytesperline.
38 /* buffer for one video frame */
40 /* v4l buffer data -- must be first */
41 struct vb2_v4l2_buffer vb;
43 /* list of buffers available */
44 struct list_head list;
46 void *buffer; /* buffer pointer */
47 unsigned long buffer_size; /* size of allocated buffer */
49 struct mmal_msg_context *msg_context;
53 struct mmal_colourfx {