As discussed on IRC, memory-to-memory need to be modeled
properly in order to be supported by the media controller
framework, and thus to support the Request API.
First commit introduces a register/unregister API,
that creates/destroys all the entities and pads needed,
and links them.
The second commit uses this API to support the vim2m driver.
The series applies cleanly on v4.18-rc1.
v4:
* Add unique entity names (Hans)
* Add associated interface major and minor (Hans)
* Remove unused MEM2MEM_ENT_TYPE_MAX
v3:
* Remove extra empty line.
* Remove duplicated entity name set.
* Reorder sink and source pads as suggested by Hans.
* Drop unused media macros, we can add them as needed.
v2:
* Fix compile error when MEDIA_CONTROLLER was not enabled.
* Fix the 'proc' entity link, which was wrongly connecting
source to source and sink to sink.
Compliance output
=================
v4l2-compliance -m 0 -v
v4l2-compliance SHA: 248491682a2919a1bd421f87b33c14125b9fc1f5, 64 bits
Compliance test for device /dev/media0:
Media Driver Info:
Driver name : vim2m
Model : vim2m
Serial :
Bus info :
Media version : 4.18.0
Hardware revision: 0x00000000 (0)
Driver version : 4.18.0
Required ioctls:
test MEDIA_IOC_DEVICE_INFO: OK
Allow for multiple opens:
test second /dev/media0 open: OK
test MEDIA_IOC_DEVICE_INFO: OK
test for unlimited opens: OK
Media Controller ioctls:
Entity: 0x00000001 (Name: 'vim2m-source', Function: V4L2 I/O)
Entity: 0x00000003 (Name: 'vim2m-proc', Function: Video Scaler)
Entity: 0x00000006 (Name: 'vim2m-sink', Function: V4L2 I/O)
Interface: 0x0300000c (Type: V4L Video, DevPath: /dev/video2)
Pad: 0x01000002 (vim2m-source, Source)
Pad: 0x01000004 (vim2m-proc, Sink)
Pad: 0x01000005 (vim2m-proc, Source)
Pad: 0x01000007 (vim2m-sink, Sink)
Link: 0x02000008 (vim2m-source -> vim2m-proc)
Link: 0x0200000a (vim2m-proc -> vim2m-sink)
Link: 0x0200000d (vim2m-source to interface /dev/video2)
Link: 0x0200000e (vim2m-sink to interface /dev/video2)
test MEDIA_IOC_G_TOPOLOGY: OK
Entities: 3 Interfaces: 1 Pads: 4 Links: 4
Entity: 0x00000001 (Name: 'vim2m-source', Type: V4L2 I/O
DevPath: /dev/video2)
Entity: 0x00000003 (Name: 'vim2m-proc', Type: Unknown legacy
device node type (0001ffff) DevPath: /dev/video2)
Entity: 0x00000006 (Name: 'vim2m-sink', Type: V4L2 I/O DevPath:
/dev/video2)
Entity Links: 0x00000001 (Name: 'vim2m-source')
Entity Links: 0x00000003 (Name: 'vim2m-proc')
Entity Links: 0x00000006 (Name: 'vim2m-sink')
test MEDIA_IOC_ENUM_ENTITIES/LINKS: OK
test MEDIA_IOC_SETUP_LINK: OK
--------------------------------------------------------------------------------
Compliance test for device /dev/video2:
Driver Info:
Driver name : vim2m
Card type : vim2m
Bus info : platform:vim2m
Driver version : 4.18.0
Capabilities : 0x84208000
Video Memory-to-Memory
Streaming
Extended Pix Format
Device Capabilities
Device Caps : 0x04208000
Video Memory-to-Memory
Streaming
Extended Pix Format
Media Driver Info:
Driver name : vim2m
Model : vim2m
Serial :
Bus info :
Media version : 4.18.0
Hardware revision: 0x00000000 (0)
Driver version : 4.18.0
Interface Info:
ID : 0x0300000c
Type : V4L Video
Entity Info:
ID : 0x00000001 (1)
Name : vim2m-source
Function : V4L2 I/O
Pad 0x01000002 : Source
Link 0x02000008: to remote pad 0x1000005 of entity 'vim2m-proc':
Data, Enabled, Immutable
Required ioctls:
test MC information (see 'Media Driver Info' above): OK
test VIDIOC_QUERYCAP: OK
Allow for multiple opens:
test second /dev/video2 open: OK
test VIDIOC_QUERYCAP: OK
test VIDIOC_G/S_PRIORITY: OK
test for unlimited opens: OK
Debug ioctls:
test VIDIOC_DBG_G/S_REGISTER: OK
test VIDIOC_LOG_STATUS: OK (Not Supported)
Input ioctls:
test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported)
test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
test VIDIOC_ENUMAUDIO: OK (Not Supported)
test VIDIOC_G/S/ENUMINPUT: OK (Not Supported)
test VIDIOC_G/S_AUDIO: OK (Not Supported)
Inputs: 0 Audio Inputs: 0 Tuners: 0
Output ioctls:
test VIDIOC_G/S_MODULATOR: OK (Not Supported)
test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
test VIDIOC_ENUMAUDOUT: OK (Not Supported)
test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
test VIDIOC_G/S_AUDOUT: OK (Not Supported)
Outputs: 0 Audio Outputs: 0 Modulators: 0
Input/Output configuration ioctls:
test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported)
test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
test VIDIOC_G/S_EDID: OK (Not Supported)
Control ioctls:
info: checking v4l2_queryctrl of control 'User Controls'
(0x00980001)
info: checking v4l2_queryctrl of control 'Horizontal Flip'
(0x00980914)
info: checking v4l2_queryctrl of control 'Vertical Flip'
(0x00980915)
info: checking v4l2_queryctrl of control 'Transaction Time
(msec)' (0x00981900)
info: checking v4l2_queryctrl of control 'Buffers Per
Transaction' (0x00981901)
info: checking v4l2_queryctrl of control 'Horizontal Flip'
(0x00980914)
info: checking v4l2_queryctrl of control 'Vertical Flip'
(0x00980915)
info: checking v4l2_queryctrl of control 'Transaction Time
(msec)' (0x08000000)
info: checking v4l2_queryctrl of control 'Buffers Per
Transaction' (0x08000001)
test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
test VIDIOC_QUERYCTRL: OK
info: checking control 'User Controls' (0x00980001)
info: checking control 'Horizontal Flip' (0x00980914)
info: checking control 'Vertical Flip' (0x00980915)
info: checking control 'Transaction Time (msec)' (0x00981900)
info: checking control 'Buffers Per Transaction' (0x00981901)
test VIDIOC_G/S_CTRL: OK
info: checking extended control 'User Controls' (0x00980001)
info: checking extended control 'Horizontal Flip' (0x00980914)
info: checking extended control 'Vertical Flip' (0x00980915)
info: checking extended control 'Transaction Time (msec)'
(0x00981900)
info: checking extended control 'Buffers Per Transaction'
(0x00981901)
test VIDIOC_G/S/TRY_EXT_CTRLS: OK
info: checking control event 'User Controls' (0x00980001)
info: checking control event 'Horizontal Flip' (0x00980914)
info: checking control event 'Vertical Flip' (0x00980915)
info: checking control event 'Transaction Time (msec)'
(0x00981900)
info: checking control event 'Buffers Per Transaction'
(0x00981901)
test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
Standard Controls: 3 Private Controls: 2
Format ioctls:
info: found 1 formats for buftype 1
info: found 2 formats for buftype 2
test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
test VIDIOC_G/S_PARM: OK (Not Supported)
test VIDIOC_G_FBUF: OK (Not Supported)
test VIDIOC_G_FMT: OK
test VIDIOC_TRY_FMT: OK
test VIDIOC_S_FMT: OK
test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
test Cropping: OK (Not Supported)
test Composing: OK (Not Supported)
test Scaling: OK
Codec ioctls:
test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
test VIDIOC_G_ENC_INDEX: OK (Not Supported)
test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)
Buffer ioctls:
info: test buftype Video Capture
info: test buftype Video Output
test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
test VIDIOC_EXPBUF: OK
Total: 51, Succeeded: 51, Failed: 0, Warnings: 0
Ezequiel Garcia (1):
media: add helpers for memory-to-memory media controller
Hans Verkuil (1):
vim2m: add media device
drivers/media/platform/vim2m.c | 41 +++++-
drivers/media/v4l2-core/v4l2-dev.c | 13 +-
drivers/media/v4l2-core/v4l2-mem2mem.c | 186 +++++++++++++++++++++++++
include/media/v4l2-mem2mem.h | 19 +++
4 files changed, 250 insertions(+), 9 deletions(-)
--
2.18.0.rc2
