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| author |   Paul Kocialkowski <paul.kocialkowski@bootlin.com> | 2018-09-13 10:51:55 -0400 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2018-09-24 10:47:10 -0400 |
| commit | 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1 (patch) | |
| tree | 28ad6401e53e50245d2161481d9f9f52c3787918 /drivers/staging/media/sunxi/cedrus/cedrus_video.h | |
| parent | media: dt-bindings: media: Document bindings for the Cedrus VPU driver (diff) | |
| download | linux-dev-50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1.tar.xz linux-dev-50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1.zip | |
media: platform: Add Cedrus VPU decoder driver
This introduces the Cedrus VPU driver that supports the VPU found in
Allwinner SoCs, also known as Video Engine. It is implemented through
a V4L2 M2M decoder device and a media device (used for media requests).
So far, it only supports MPEG-2 decoding.
Since this VPU is stateless, synchronization with media requests is
required in order to ensure consistency between frame headers that
contain metadata about the frame to process and the raw slice data that
is used to generate the frame.
This driver was made possible thanks to the long-standing effort
carried out by the linux-sunxi community in the interest of reverse
engineering, documenting and implementing support for the Allwinner VPU.
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
[hans.verkuil@cisco.com: dropped obsolete MEDIA_REQUEST_API from Kconfig]
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/staging/media/sunxi/cedrus/cedrus_video.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_video.h b/drivers/staging/media/sunxi/cedrus/cedrus_video.h new file mode 100644 index 000000000000..0e4f7a8cccf2 --- /dev/null +++ b/drivers/staging/media/sunxi/cedrus/cedrus_video.h @@ -0,0 +1,30 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Cedrus VPU driver + * + * Copyright (C) 2016 Florent Revest <florent.revest@free-electrons.com> + * Copyright (C) 2018 Paul Kocialkowski <paul.kocialkowski@bootlin.com> + * Copyright (C) 2018 Bootlin + * + * Based on the vim2m driver, that is: + * + * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd. + * Pawel Osciak, <pawel@osciak.com> + * Marek Szyprowski, <m.szyprowski@samsung.com> + */ + +#ifndef _CEDRUS_VIDEO_H_ +#define _CEDRUS_VIDEO_H_ + +struct cedrus_format { + u32 pixelformat; + u32 directions; + unsigned int capabilities; +}; + +extern const struct v4l2_ioctl_ops cedrus_ioctl_ops; + +int cedrus_queue_init(void *priv, struct vb2_queue *src_vq, + struct vb2_queue *dst_vq); + +#endif |