On Tue, Nov 9, 2021 at 7:57 AM Nicolas Dufresne <nicolas@xxxxxxxxxxxx> wrote: > > Le lundi 08 novembre 2021 à 10:33 -0600, Adam Ford a écrit : > > On Mon, Nov 8, 2021 at 7:59 AM Nicolas Dufresne <nicolas@xxxxxxxxxxxx> wrote: > > > > > > Hi Adam, > > > > > > thanks for you work, I'll try and reply about the GStreamer questions below, if > > > you have further question feel free to ask. > > > > > > Le samedi 06 novembre 2021 à 13:37 -0500, Adam Ford a écrit : > > > > The i.MX8M has two Hantro video decoders, called G1 and G2 which appear > > > > to be related to the video decoders used on the i.MX8MQ, but because of > > > > how the Mini handles the power domains, the VPU driver does not need to > > > > handle all the functions, so a new compatible flag is required. > > > > > > > > This is an RFC because I don't have functional video on my system yet, > > > > and I'm hoping there might be people who do and can help test this. > > > > I have only tested this far enough to see they enumerate and appear > > > > as /dev/videoX and /dev/mediaX devices. > > > > > > I will check the patchset, but you need in the mini-variant to disable the G1 > > > post processor, because this block was fused out. We didn't make it optional > > > > Thanks for being willing to review this. > > > > > from the start as according to the V1 of the TRM it was there, but that error > > > was corrected in V3. > > > > Thanks for the clarification. It wasn't obvious to me, because in > > some instances the PP looked like it was there and sometimes not > > there. I'll remove the postproc stuff. > > > > > > > > > > > > > I am also curious to know if/what gstreamer plugins are necessary. In > > > > NXP's custom kernel, there are IMX-specific plugins, and I was hoping there > > > > would be more generic plugins that I can use to test. I am hoping some > > > > of the linux-media experts might chime in on how to best test. > > > > > > I will recommend using GStreamer 1.19.3 or main branch (GStreamer is now a > > > single git repo). You will then be able to test Hantro G1 decoding of MPEG2, > > > H264 and VP8. Remember that the related plugin depends on libgudev (a glib > > > binding of udev). > > > > Thanks for the tip. > > > > > > > > For the encoder, I believe only JPEG maybe supported, since this is all there is > > > mainline for RK3288 (and perhaps other RK). But this will need testing and > > > debugging as the G1 version is slightly newer on NXP SoC. > > > > For what it's worth the G1 seems to repond cleanly to the inquiries > > from v42-compliance. > > The G2 throws some splat when I run v4l2-compliance, but I am still > > investigating that. > > > > [ 405.456979] ------------[ cut here ]------------ > > [ 405.464173] WARNING: CPU: 0 PID: 563 at mm/page_alloc.c:5344 > > __alloc_pages+0x5a4/0xbe0 > > [ 405.472104] Modules linked in: 8021q garp mrp stp llc caam_jr > > caamhash_desc caamalg_desc crypto_engine rng_core authenc libdes > > imx7_media_csi(C) crct10dif_ce imx_media_common(C) > > snd_soc_fsl_asoc_card imx7_mipi_csis(C) snd_soc_imx_audmux > > snd_soc_simple_card_utils fsl_imx8_ddr_perf imx8m_ddrc brcmfmac > > brcmutil hantro_vpu(C) v4l2_h264 v4l2_mem2mem videobuf2_vmalloc > > videobuf2_dma_contig videobuf2_memops cfg80211 ov5640 videobuf2_v4l2 > > v4l2_fwnode v4l2_async videobuf2_common videodev etnaviv gpu_sched > > hci_uart mc btqca btbcm snd_soc_wm8962 at24 spi_imx rtc_pcf85363 > > rtc_snvs clk_bd718x7 spi_bitbang snvs_pwrkey snd_soc_fsl_sai > > imx_pcm_dma caam error bluetooth imx8mm_thermal ecdh_generic > > imx_cpufreq_dt ecc rfkill fuse drm ipv6 > > [ 405.535835] CPU: 0 PID: 563 Comm: v4l2-compliance Tainted: G D > > C 5.15.0-next-20211105-00010-g4bb8e8a25d3c-dirty #28 > > [ 405.547401] Hardware name: Beacon EmbeddedWorks i.MX8M Mini > > Development Kit (DT) > > [ 405.554797] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) > > [ 405.561762] pc : __alloc_pages+0x5a4/0xbe0 > > [ 405.565861] lr : __dma_direct_alloc_pages+0x17c/0x1e0 > > [ 405.570917] sp : ffff800012443810 > > [ 405.574232] x29: ffff800012443810 x28: 0000000000000000 x27: ffff000005288220 > > [ 405.581375] x26: 0000000000000034 x25: 0000000000000000 x24: ffff000000259010 > > [ 405.588517] x23: ffff80001011ab7c x22: ffff000000259010 x21: 00000000ffffffff > > [ 405.595659] x20: 0000000000000cc1 x19: 0000000000000000 x18: 0000000000000000 > > [ 405.602803] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 > > [ 405.609947] x14: 0000000000000001 x13: 0000000000000000 x12: 0000000000000000 > > [ 405.617090] x11: ffff80001241d000 x10: ffff00000528833a x9 : ffff00000528832a > > [ 405.624232] x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000cc0 > > [ 405.631378] x5 : 00000000bfffffff x4 : ffff000009e30dc0 x3 : 0000000000000000 > > [ 405.638520] x2 : 0000000000000000 x1 : 0000000000000001 x0 : 0000000000000cc1 > > [ 405.645666] Call trace: > > [ 405.648113] __alloc_pages+0x5a4/0xbe0 > > [ 405.651862] __dma_direct_alloc_pages+0x17c/0x1e0 > > [ 405.656569] dma_direct_alloc+0x70/0x310 > > [ 405.660494] dma_alloc_attrs+0x7c/0xe4 > > [ 405.664246] hantro_hevc_get_ref_buf+0x15c/0x184 [hantro_vpu] > > [ 405.670021] hantro_g2_hevc_dec_run+0x3b8/0x1910 [hantro_vpu] > > [ 405.675791] device_run+0xac/0x110 [hantro_vpu] > > [ 405.680345] v4l2_m2m_try_run+0xac/0x1b0 [v4l2_mem2mem] > > [ 405.685598] v4l2_m2m_ioctl_streamon+0x84/0xa0 [v4l2_mem2mem] > > [ 405.691366] v4l_streamon+0x28/0x34 [videodev] > > [ 405.695877] __video_do_ioctl+0x178/0x3dc [videodev] > > [ 405.700897] video_usercopy+0x368/0x6dc [videodev] > > [ 405.705745] video_ioctl2+0x1c/0x30 [videodev] > > [ 405.710246] v4l2_ioctl+0x44/0x64 [videodev] > > [ 405.714574] __arm64_sys_ioctl+0xac/0xf0 > > [ 405.718502] invoke_syscall+0x48/0x114 > > [ 405.722258] el0_svc_common.constprop.0+0xd4/0xfc > > [ 405.726969] do_el0_svc+0x2c/0x94 > > [ 405.730286] el0_svc+0x28/0x80 > > [ 405.733348] el0t_64_sync_handler+0xa8/0x130 > > [ 405.737619] el0t_64_sync+0x1a0/0x1a4 > > [ 405.741287] ---[ end trace 270ed4a899803006 ]--- > > > > The H1 encoder seems to hang the system when I run v4l2-compliance on > > it when H1 is set up as I submitted the patch. I tried dropping all > > the encoder formats except the JPEG format, and it doesn't hang any > > more, but it also doesn't really do anything. > > The datasheet only references VPU_H1 as supporting VP8 and H.264, so I > > am not sure JPEG is even supported. > > If JPEG is not supported, then there is nothing left for mainline in this > regard. The kernel control interface and encoding flow needs to be designed and > specified for encoders like VP8 and H264. Some prototypes and prior-art exist > though, but nothing ever got formalized in the form of a specification. > > > > > The log from v4l2-compliance on the H1 with everything except the JPEG > > removed looks like: > > > > root@beacon-imx8mm-kit:~# v4l2-compliance -d2 > > v4l2-compliance SHA: not available > > , 64 bits, 64-bit time_t > > > > Segmentation fault > > root@beacon-imx8mm-kit:~# > > Message from syslogd@ at Thu Jan 1 00:05:07 1970 ... > > : Internal error: Oops: 96000004 [#2] SMP > > > > Message from syslogd@ at Thu Jan 1 00:05:07 1970 ... > > : Code: 52800001 aa1403e0 d2801802 95c31ab9 (b9400aa1) > > > > I want to install Gstreamer, but I don't have functioning DSI video, > > so I am not entirely sure how I will go about testing the decoders > > except by using fakesink > > We too don't have an mainline DSI to test the CODECs on recent NXP SoC. For > decoders we use fluster, a tool that runs publicly available conformance test. > It will simply decode to disk and compare a checksum of the decoded image > against the compliant checksum (produced by the reference decoders). For you > interested, it uses the new videocodectestsink, which is specialized for > producing or calculating conformance image/checksum. > > https://github.com/fluendo/fluster > > We have added support for GStreamer stateless decoders already. > > > > > If the G1 ends up working with some of the newer Gstreamer stuff, I > > might just submit a formal patch to just enable the G1 for now. > > This looks like a good idea indeed. > > > > > adam > > > > > > > > > > > Lastly, I didn't update any device tree binding YAML files, because > > > > I know there have been some discussions about the power domains on the > > > > imx8mq, and I wasn't sure if the imx8mm should get a separate YAML file > > > > or if the existing one for te imx8mq should just be modified. > > > > > > > > This will likely require the following series in order to apply correctly: > > > > https://patchwork.kernel.org/project/linux-arm-kernel/list/?series=576407 > > > > > > > > Adam Ford (5): > > > > media: hantro: Add support for i.MX8M Mini > > > > arm64: dts: imx8mm: Enable VPU-G1 and VPU-G2 > > > > media: hantro: Rename ROCKCHIP_VPU_ENC_FMT to HANTRO_VPU_ENC_FMT > > > > media: hantro: Add H1 encoder support on i.MX8M Mini > > > > arm64: dts: imx8mm: Enable Hantro H1 Encoder > > > > > > > > arch/arm64/boot/dts/freescale/imx8mm.dtsi | 61 ++++++++ > > > > drivers/staging/media/hantro/hantro_drv.c | 3 + > > > > drivers/staging/media/hantro/hantro_hw.h | 19 ++- > > > > drivers/staging/media/hantro/imx8m_vpu_hw.c | 143 ++++++++++++++++++ > > > > .../staging/media/hantro/rockchip_vpu_hw.c | 26 ++-- > > > > 5 files changed, 231 insertions(+), 21 deletions(-) > > > > > > > > Nicolas and Adam, For the H1 patches in this series: I've been able to test the IMX8MM H1 JPEG encode using GStreamer 1.18.5: $ gst-inspect-1.0 | grep -e "v4l2.*enc" video4linux2: v4l2jpegenc: V4L2 JPEG Encoder $ gst-launch-1.0 videotestsrc ! jpegenc ! rtpjpegpay ! udpsink host=192.168.1.146 port=5000 viewed on client@192.168.1.146 via: $ gst-launch-1.0 udpsrc port=5000 ! application/x-rtp,payload=96 ! rtpjpegdepay ! jpegdec ! autovideosink For the G1/G2 patches in the series I don't see any Gstreamer 'v4l2.*dec' elements. Perhaps I need a newer version of Gstreamer. I have CSI capture and DSI display currently working on imx8mm-venice-gw73xx-0x that I can play with. The CSI sensor only supports RAW8/RAW10 (and gstreamer currently only supports RAW8) and I can't efficiently convert to something the JPEG encoder likes without bayer2rgbneon (a libneon version). I see from the IMX8MMRM that the 2D GPU supports scaling etc with a wide range of data formats but I'm not sure how to tap into this as that hardware is managed by the vivante driver. On the IMX6QDL there is a separate IPU block that Philipp Zabel wrote a nice mem2mem csc/scaler driver for but I don't see any equivalent currently for IMX8MM. Best regards, Tim
