Hey Martin, On Fri, 2017-11-17 at 15:27 +0100, Martin Fuzzey wrote: > Hi, > > I'm trying to get Android graphics working on i.MX6 using upstream > versions: > > Kernel 4.14 > > Mesa: mesa-17.3.0-rc2 > > Libdrm: libdrm-2.4.88 > > drm_hwcomposer (git head) > > gbm_gralloc (git head from git://github.com/robherring) > > > I want to run on Android 5, which only has HWC1, the code for that > is > still in drm_hwcomposer but is not built anymore. > So I added that back and fixed up a few minor build errors. > > The first problem I ran into was > E/GRALLOC-GBM( 437): failed to create BO, size=1024x600, > fmt=2, > usage=5 > W/GraphicBufferAllocator( 437): alloc(1024, 600, 2, 00001a00, > ...) > failed -13 (Permission denied) > > This was due to an GBM attempting to issue DRM_IOCTL_MODE_CREATE_DUMB > on > a render node. > > Setting gralloc.gbm.device /dev/dri/card1 (the imx-drm node) instead > of > the default /dev/dri/renderD128 fixed that but then HWC couldn't > become > master on the DRI node to issue KMS commands since gralloc had > already > opened the device. > > Adding a patch similar to: > > commit 4f4cb902517f5caacea075fb9724e4ce0c435e3d > Author: Robert Foss <robert.foss@xxxxxxxxxxxxx> > Date: Wed May 17 18:08:14 2017 -0400 > > drm_hwcomposer: Get KMS FD from gbm_gralloc > > To make drm_hwc and gbm_gralloc use the same FD fixed that. > > > But the problem I now have that when HWC tries to import the first > client buffers (from bootanimation) there are errors like: > > 01-01 17:27:02.282 443 443 E hwc-platform-drm-generic: failed to > import prime fd 25 ret=-1 > > This is because the imx-drm kernel driver wants physically > contiguous > buffers for import (it uses drm_gem_cma_prime_import_sg_table()) but > the > buffer allocated by drm etnaviv isn't contiguous... > > Not sure what to do about that one. > > Any help appreciated. > > Martin > Remarkably this is an issue have not encountered. I would suggest poking the fine folks on the etnaviv ML, like Lucas/Wladimir/Christian. Rob.
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