On 02/08/18 11:46, Philipp Zabel wrote: > On Wed, 2018-02-07 at 23:19 +0100, Hans Verkuil wrote: >> On 02/07/2018 11:05 PM, Tim Harvey wrote: >>> On Wed, Feb 7, 2018 at 1:09 AM, Hans Verkuil <hverkuil@xxxxxxxxx> wrote: >>>> On 02/07/18 09:22, Hans Verkuil wrote: >>>>> On 02/07/2018 12:29 AM, Tim Harvey wrote: >>>>>> Media Controller ioctls: >>>>>> fail: v4l2-test-media.cpp(141): ent.function == >>>>>> MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN >>>>> >>>>> Weird, this shouldn't happen. I'll look into this a bit more. >>>> >>>> Can you run 'mc_nextgen_test -e -i' and post the output? >>>> >>>> It's found in contrib/test. >>>> >>> >>> root@ventana:~# ./v4l-utils/contrib/test/mc_nextgen_test -e -i >>> Device: imx-media (driver imx-media) >>> Bus: >>> version: 0 >>> number of entities: 24 >>> number of interfaces: 24 >>> number of pads: 48 >>> number of links: 50 >>> entity entity#1: 'unknown entity type' adv7180 2-0020, 1 pad(s), 1 source(s) >>> entity entity#3: 'unknown entity type' tda19971 2-0048, 1 pad(s), 1 source(s) >>> entity entity#5: 'unknown entity type' ipu1_vdic, 3 pad(s), 2 sink(s), >>> 1 source(s) >>> entity entity#9: 'unknown entity type' ipu2_vdic, 3 pad(s), 2 sink(s), >>> 1 source(s) >>> entity entity#13: 'unknown entity type' ipu1_ic_prp, 3 pad(s), 1 >>> sink(s), 2 source(s) >>> entity entity#17: 'unknown entity type' ipu1_ic_prpenc, 2 pad(s), 1 >>> sink(s), 1 source(s) >>> entity entity#20: 'V4L I/O' ipu1_ic_prpenc capture, 1 pad(s), 1 sink(s) >>> entity entity#26: 'unknown entity type' ipu1_ic_prpvf, 2 pad(s), 1 >>> sink(s), 1 source(s) >>> entity entity#29: 'V4L I/O' ipu1_ic_prpvf capture, 1 pad(s), 1 sink(s) >>> entity entity#35: 'unknown entity type' ipu2_ic_prp, 3 pad(s), 1 >>> sink(s), 2 source(s) >>> entity entity#39: 'unknown entity type' ipu2_ic_prpenc, 2 pad(s), 1 >>> sink(s), 1 source(s) >>> entity entity#42: 'V4L I/O' ipu2_ic_prpenc capture, 1 pad(s), 1 sink(s) >>> entity entity#48: 'unknown entity type' ipu2_ic_prpvf, 2 pad(s), 1 >>> sink(s), 1 source(s) >>> entity entity#51: 'V4L I/O' ipu2_ic_prpvf capture, 1 pad(s), 1 sink(s) >>> entity entity#57: 'unknown entity type' ipu1_csi0, 3 pad(s), 1 >>> sink(s), 2 source(s) >>> entity entity#61: 'V4L I/O' ipu1_csi0 capture, 1 pad(s), 1 sink(s) >>> entity entity#67: 'unknown entity type' ipu1_csi1, 3 pad(s), 1 >>> sink(s), 2 source(s) >>> entity entity#71: 'V4L I/O' ipu1_csi1 capture, 1 pad(s), 1 sink(s) >>> entity entity#77: 'unknown entity type' ipu2_csi0, 3 pad(s), 1 >>> sink(s), 2 source(s) >>> entity entity#81: 'V4L I/O' ipu2_csi0 capture, 1 pad(s), 1 sink(s) >>> entity entity#87: 'unknown entity type' ipu2_csi1, 3 pad(s), 1 >>> sink(s), 2 source(s) >>> entity entity#91: 'V4L I/O' ipu2_csi1 capture, 1 pad(s), 1 sink(s) >>> entity entity#97: 'unknown entity type' ipu1_csi0_mux, 3 pad(s), 2 >>> sink(s), 1 source(s) >>> entity entity#101: 'unknown entity type' ipu2_csi1_mux, 3 pad(s), 2 >>> sink(s), 1 source(s) >> >> Yuck. So nobody in imx (and adv7180!) is setting a valid function. >> And I see the mc_nextgen_test.c doesn't know all the latest functions >> anyway. > > That's probably because for most of the entities it's a bit unclear > which function should be assigned. Well, that's one reason. The other is that there never was a utility to test this :-) > ipu[12]_csi[01]_mux are video multiplexers, so MEDIA_ENT_F_VID_MUX. I > thought those should already be set correctly in the video-mux driver. They are. The mc_nextgen_test, media-ctl and now v4l2-ctl/v4l2-compliance all have their own list of functions that they know about and it's all different. It's one of the things I want to fix. > ipu[12]_csi[01] are the interfaces to the outside parallel busses, but > they can also 'downscale' by skipping, skip frames and pack or expand > pixels from the bus into the internal FIFOs that lead to the next > element. These are not MEDIA_ENT_F_VID_IF_BRIDGE, are they? Yes, they are. One limitation of the current API is that you cannot represent correctly devices with multiple functions. This is planned for a long time now, but nobody actually did the work. So for now just fill in the primary function with a comment that in the future other functions should be set as well. > ipu[12]_vdic are mainly deinterlacers, so a new function > MEDIA_ENT_F_PROC_VIDEO_DEINTERLACER ? These entities could also be used > as composers in a mem2mem scenario (MEDIA_ENT_F_PROC_VIDEO_COMPOSER ?), > but this is currently not supported. Yes, we need a PROC_VIDEO_DEINTERLACER function. > > ipu[12]_ic_prp is just a tee element that feeds both ipu[12]_ic_prpenc > and ipu[12]_ic_prpvf. These are both scalers and colorspace converters. > MEDIA_ENT_F_PROC_VIDEO_SCALER ? > MEDIA_ENT_F_PROC_VIDEO_PIXEL_ENC_CONV ? The tee element would be a new PROC_VIDEO_SPLITTER function. The other two would be scalers, but should add the VIDEO_PIXEL_ENC_CONV function once it is possible to do so. > > "ipu[12]_csi[01] capture" are the DMA elements writing to memory, so > MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER ? These are likely to be filled correctly already. I've just added a commit to v4l2-compliance to make it easier to see what function is used: v4l2-compliance -m0 -v Regards, Hans
