Hello All
I'm a new on media and camera things.
I try to use the isp cam port on omap3550 with media framework
we had a tvp5150 connected on isp port through the parallele interface on own custom board.
I had ported the tvp5150 driver on media framework like im046 and 8et8ek8,
and I'm quiet lost
questions:
The node /dev/media0 is used only the parameters ?
if yes do i need to configure and how to do it (the media-ctl is not easy to used)
and the video frame comes from /dev/video2
(I try to capture the frame comes from CCDC output) ?
Il try (tvp5150 -> CCDC in, and try to read CCDC out I not sure about my thinking)
./media-ctl -l 16:0'->'5:0[1]
and the entity 16 changed
- entity 16: tvp5150 3-005d (1 pad, 1 link)
type V4L2 subdev subtype Unknown
pad0: Output v4l2_subdev_open: Failed to open subdev device node
-> 'OMAP3 ISP CCDC':pad0 [ACTIVE]
if I'm right
I can't understand how it works exactly and what appended on the different symptom
The format.pix strcture is empty after called VIDIOC_G_FORMAT ?
If I force the size in the code it's ok for that ioctl
but I can't swith the stream on,
Unable to start streaming: 32
in the isp_video_validate_pipeline() the
isp_video_remote_subdev() return null ptr
of cause, in media_entity_remote_pad(), it check
MEDIA_LINK_FLAG_ACTIVE and in my case, is not active,
because, in func isp_register_entities()
the flag is set to 0 on case ISP_INTERFACE_PARALLEL:
here my media topologie
Opening media device /dev/media0
Enumerating entities
Found 16 entities
Enumerating pads and links
Device topology
- entity 1: OMAP3 ISP CCP2 (2 pads, 1 link)
type V4L2 subdev subtype Unknown
device node name /dev/subdev0
pad0: Input [unknown 0x0]
pad1: Output [unknown 0x0]
-> 'OMAP3 ISP CCDC':pad0 []
- entity 2: OMAP3 ISP CCP2 input (1 pad, 1 link)
type Node subtype V4L
device node name /dev/video0
pad0: Output
-> 'OMAP3 ISP CCP2':pad0 []
- entity 3: OMAP3 ISP CSI2a (2 pads, 2 links)
type V4L2 subdev subtype Unknown
pad0: Input v4l2_subdev_open: Failed to open subdev device node
pad1: Output v4l2_subdev_open: Failed to open subdev device node
-> 'OMAP3 ISP CSI2a output':pad0 []
-> 'OMAP3 ISP CCDC':pad0 []
- entity 4: OMAP3 ISP CSI2a output (1 pad, 0 link)
type Node subtype V4L
device node name /dev/video1
pad0: Input
- entity 5: OMAP3 ISP CCDC (3 pads, 6 links)
type V4L2 subdev subtype Unknown
pad0: Input v4l2_subdev_open: Failed to open subdev device node
pad1: Output v4l2_subdev_open: Failed to open subdev device node
-> 'OMAP3 ISP CCDC output':pad0 []
-> 'OMAP3 ISP resizer':pad0 []
pad2: Output v4l2_subdev_open: Failed to open subdev device node
-> 'OMAP3 ISP preview':pad0 []
-> 'OMAP3 ISP AEWB':pad0 []
-> 'OMAP3 ISP AF':pad0 []
-> 'OMAP3 ISP histogram':pad0 []
- entity 6: OMAP3 ISP CCDC output (1 pad, 0 link)
type Node subtype V4L
device node name /dev/video2
pad0: Input
- entity 7: OMAP3 ISP preview (2 pads, 2 links)
type V4L2 subdev subtype Unknown
pad0: Input v4l2_subdev_open: Failed to open subdev device node
pad1: Output v4l2_subdev_open: Failed to open subdev device node
-> 'OMAP3 ISP preview output':pad0 []
-> 'OMAP3 ISP resizer':pad0 []
- entity 8: OMAP3 ISP preview input (1 pad, 1 link)
type Node subtype V4L
device node name /dev/video3
pad0: Output
-> 'OMAP3 ISP preview':pad0 []
- entity 9: OMAP3 ISP preview output (1 pad, 0 link)
type Node subtype V4L
device node name /dev/video4
pad0: Input
- entity 10: OMAP3 ISP resizer (2 pads, 1 link)
type V4L2 subdev subtype Unknown
pad0: Input v4l2_subdev_open: Failed to open subdev device node
pad1: Output v4l2_subdev_open: Failed to open subdev device node
-> 'OMAP3 ISP resizer output':pad0 []
- entity 11: OMAP3 ISP resizer input (1 pad, 1 link)
type Node subtype V4L
device node name /dev/video5
pad0: Output
-> 'OMAP3 ISP resizer':pad0 []
- entity 12: OMAP3 ISP resizer output (1 pad, 0 link)
type Node subtype V4L
device node name /dev/video6
pad0: Input
- entity 13: OMAP3 ISP AEWB (1 pad, 0 link)
type V4L2 subdev subtype Unknown
pad0: Input v4l2_subdev_open: Failed to open subdev device node
- entity 14: OMAP3 ISP AF (1 pad, 0 link)
type V4L2 subdev subtype Unknown
pad0: Input v4l2_subdev_open: Failed to open subdev device node
- entity 15: OMAP3 ISP histogram (1 pad, 0 link)
type V4L2 subdev subtype Unknown
pad0: Input v4l2_subdev_open: Failed to open subdev device node
- entity 16: tvp5150 3-005d (1 pad, 1 link)
type V4L2 subdev subtype Unknown
pad0: Output v4l2_subdev_open: Failed to open subdev device node
-> 'OMAP3 ISP CCDC':pad0 []
--
Salutations
Laurent Epinat -> mailto:laurent.epinat@xxxxxxxxxxxxxxx
CIO Informatique
Le millenium
1, rue de Presse - BP 710
42950 Saint-Etienne Cedex 9
Tel 33 (0) 477 93 34 32
Tcopie 33 (0) 477 79 75 55
WWW : http://www.cioinfoindus.fr/
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