On 10/10/12, Mauro Carvalho Chehab <mchehab@xxxxxxxxxx> wrote: > Hi, > > Em Tue, 02 Oct 2012 16:27:11 +0200 > Tomasz Stanislawski <t.stanislaws@xxxxxxxxxxx> escreveu: > >> Hello everyone, >> This patchset adds support for DMABUF [2] importing and exporting to V4L2 >> stack. >> >> v9: >> - rebase on 3.6 >> - change type for fs to __s32 >> - add support for vb2_ioctl_expbuf >> - remove patch 'v4l: vb2: add support for DMA_ATTR_NO_KERNEL_MAPPING', >> it will be posted as a separate patch >> - fix typos and style in Documentation (from Hans Verkuil) >> - only vb2-core and vb2-dma-contig selects DMA_SHARED_BUFFER in Kconfig >> - use data_offset and length while queueing DMABUF >> - return the most recently used fd at VIDIOC_DQBUF >> - use (buffer-type, index, plane) tuple instead of mem_offset >> to identify a for exporting (from Hans Verkuil) >> - support for DMABUF mmap in vb2-dma-contig (from Laurent Pinchart) >> - add testing alignment of vaddr and size while verifying userptr >> against DMA capabilities (from Laurent Pinchart) >> - substitute VM_DONTDUMP with VM_RESERVED >> - simplify error handling in vb2_dc_get_dmabuf (from Laurent Pinchart) > > For now, NACK. See below. Sad news! It's failed to merge by very poor samsung board support at mainline. CC arm & samsung mailing list. Thank you, Kyungmin Park > > I spent 4 days trying to setup an environment that would allow testing > DMABUF with video4linux without success (long story, see below). Also, > Laurent tried the same without any luck, and it seems that it even > corrupted his test machine. > > Basically Samsung generously donated me two boards that it could be > used on this test (Origen and SMDK310). None of them actually worked > with the upstream kernel: patches are needed to avoid OOPSes on > Origen; both Origen/SMDK310 defconfigs are completely broken, and drivers > don't even boot if someone tries to use the Kernel's defconfigs. > > Even after spending _days_ trying to figure out the needed .config options > (as the config files are not easily available), both boards have... issues: > > - lack of any display output driver at SMDK310; > > - lack of any network driver at Origen: it seems that none of > the available network options on Origen was upstreamed: no Bluetooth, no > OTG, > no Wifi. > > The only test I was able to do (yesterday, late night), the DMABUF caused > an OOPS at the Origen board. So, for sure it is not ready for upstream. > > It is now, too late for 3.7. I might consider it to 3.8, if something > can be done to fix the existing issues, and setup a proper setup, using > the upstream Kernel. > > Regards, > Mauro > > _______________________________________________ > Linaro-mm-sig mailing list > Linaro-mm-sig@xxxxxxxxxxxxxxxx > http://lists.linaro.org/mailman/listinfo/linaro-mm-sig > -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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