Hi,
On Thu, Jul 11, 2019 at 02:15:02PM +0200, Maxime Ripard wrote:
> Hi,
>
> Here is a series introducing the support for the A10 (and SoCs of the same
> generation) CMOS Sensor Interface (called CSI, not to be confused with
> MIPI-CSI, which isn't support by that IP).
>
> That interface is pretty straightforward, but the driver has a few issues
> that I wanted to bring up:
>
> * The only board I've been testing this with has an ov5640 sensor
> attached, which doesn't work with the upstream driver. Copying the
> Allwinner init sequence works though, and this is how it has been
> tested. Testing with a second sensor would allow to see if it's an
> issue on the CSI side or the sensor side.
> * We don't have support for the ISP at the moment, but this can be added
> eventually.
>
> Here is the v4l2-compliance output (commit f61132e81d79 of v4l-utils), and
> after running media-ctl -d /dev/media1 -v --set-v4l2 "'ov5640 1-0021':0
> [fmt:YUYV8_2X8/640x4 80 field:none]"
>
> Compliance test for device /dev/video1:
>
> Driver Info:
> Driver name : sun4i_csi
> Card type : sun4i-csi
> Bus info : platform:1c09000.csi
> Driver version : 5.2.0
> Capabilities : 0x84201000
> Video Capture Multiplanar
> Streaming
> Extended Pix Format
> Device Capabilities
> Device Caps : 0x04201000
> Video Capture Multiplanar
> Streaming
> Extended Pix Format
> Media Driver Info:
> Driver name : sun4i-csi
> Model : Allwinner Video Capture Device
> Serial :
> Bus info :
> Media version : 5.2.0
> Hardware revision: 0x00000000 (0)
> Driver version : 5.2.0
> Interface Info:
> ID : 0x03000008
> Type : V4L Video
> Entity Info:
> ID : 0x00000006 (6)
> Name : sun4i_csi
> Function : V4L2 I/O
> Pad 0x01000007 : 0: Sink, Must Connect
> Link 0x0200000a: from remote pad 0x1000005 of entity 'sun4i-csi-0': 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/video1 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 (Not Supported)
> 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
> test VIDIOC_G/S_AUDIO: OK (Not Supported)
> Inputs: 1 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 (Input 0):
> test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK (Not Supported)
> test VIDIOC_QUERYCTRL: OK (Not Supported)
> test VIDIOC_G/S_CTRL: OK (Not Supported)
> test VIDIOC_G/S/TRY_EXT_CTRLS: OK (Not Supported)
> test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK (Not Supported)
> test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
> Standard Controls: 0 Private Controls: 0
>
> Format ioctls (Input 0):
> 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 (Input 0):
> 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 (Input 0):
> test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
> test VIDIOC_EXPBUF: OK
>
> Test input 0:
>
> Streaming ioctls:
> test read/write: OK (Not Supported)
> test blocking wait: OK
> test MMAP: OK
> test USERPTR: OK (Not Supported)
> test DMABUF: OK (Not Supported)
>
> Total: 49, Succeeded: 49, Failed: 0, Warnings: 0
As requested by Sakari, here is the media-ctl -p output, both at boot,
and after the link setup.
# media-ctl -p -d /dev/media1
Media controller API version 5.2.0
Media device information
------------------------
driver sun4i-csi
model Allwinner Video Capture Device
serial
bus info
hw revision 0x0
driver version 5.2.0
Device topology
- entity 1: ov5640 1-0021 (1 pad, 1 link)
type V4L2 subdev subtype Sensor flags 0
device node name /dev/v4l-subdev0
pad0: Source
[fmt:UYVY8_2X8/640x480@1/30 field:none colorspace:srgb xfer:srgb ycbcr:601 quantization:full-range]
-> "sun4i-csi-0":0 [ENABLED,IMMUTABLE]
- entity 3: sun4i-csi-0 (2 pads, 2 links)
type V4L2 subdev subtype Unknown flags 0
device node name /dev/v4l-subdev1
pad0: Sink
<- "ov5640 1-0021":0 [ENABLED,IMMUTABLE]
pad1: Source
[fmt:unknown/0x0]
-> "sun4i_csi":0 [ENABLED,IMMUTABLE]
- entity 6: sun4i_csi (1 pad, 1 link)
type Node subtype V4L flags 0
device node name /dev/video1
pad0: Sink
<- "sun4i-csi-0":1 [ENABLED,IMMUTABLE]
# media-ctl -d /dev/media1 -v --set-v4l2 "'ov5640 1-0021':0 [fmt:YUYV8_2X8/640x4
80 field:none]"
Opening media device /dev/media1
Enumerating entities
Found 3 entities
Enumerating pads and links
Setting up format YUYV8_2X8 640x480 on pad ov5640 1-0021/0
Format set: YUYV8_2X8 640x480
Setting up format YUYV8_2X8 640x480 on pad sun4i-csi-0/0
Format set: YUYV8_2X8 640x480
# media-ctl -p -d /dev/media1
Media controller API version 5.2.0
Media device information
------------------------
driver sun4i-csi
model Allwinner Video Capture Device
serial
bus info
hw revision 0x0
driver version 5.2.0
Device topology
- entity 1: ov5640 1-0021 (1 pad, 1 link)
type V4L2 subdev subtype Sensor flags 0
device node name /dev/v4l-subdev0
pad0: Source
[fmt:YUYV8_2X8/640x480@1/30 field:none colorspace:srgb xfer:srgb ycbcr:601 quantization:full-range]
-> "sun4i-csi-0":0 [ENABLED,IMMUTABLE]
- entity 3: sun4i-csi-0 (2 pads, 2 links)
type V4L2 subdev subtype Unknown flags 0
device node name /dev/v4l-subdev1
pad0: Sink
<- "ov5640 1-0021":0 [ENABLED,IMMUTABLE]
pad1: Source
[fmt:YUYV8_2X8/640x480]
-> "sun4i_csi":0 [ENABLED,IMMUTABLE]
- entity 6: sun4i_csi (1 pad, 1 link)
type Node subtype V4L flags 0
device node name /dev/video1
pad0: Sink
<- "sun4i-csi-0":1 [ENABLED,IMMUTABLE]
--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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