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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Guido, On Wed, Jul 29, 2020 at 05:09:52PM +0200, Guido G=FCnther wrote: > Hi, > On Wed, Jul 29, 2020 at 05:16:47PM +0300, Laurentiu Palcu wrote: > > Hi Guido, > > = > > On Wed, Jul 29, 2020 at 03:59:48PM +0200, Guido G=FCnther wrote: > > > Hi, > > > On Fri, Jul 24, 2020 at 12:07:29PM +0300, Laurentiu Palcu wrote: > > > > From: Laurentiu Palcu > > > > = > > > > Hi, > > > > = > > > > This patchset adds initial DCSS support for iMX8MQ chip. Initial su= pport > > > > includes only graphics plane support (no video planes), no HDR10 ca= pabilities, > > > > no graphics decompression (only linear, tiled and super-tiled buffe= rs allowed). > > > > = > > > > Support for the rest of the features will be added incrementally, i= n subsequent > > > > patches. > > > > = > > > > The patchset was tested with both HDP driver (in the downstream tre= e) and the upstream > > > > MIPI-DSI driver (with a couple of patches on top, to make it work > > > > correctly with DCSS). > > > = > > > While i could run earlier versions of this series with NWL I'm seeing > > > only a brief image that then turns black (backlight still on) with th= is current version and > > > the board hangs soon after.(for reference using mxsfb works nicely wi= th > > > the very same DT on next-20200727). If I do a drm.debug=3D0x3f i can = see > > > that display output stops around: > > > = > > > [ 15.394473] imx-dcss 32e00000.display-controller: [drm:drm_update_= vblank_count] updating vblank count on crtc 0: current=3D22, diff=3D1, hw= =3D0 hw_last=3D0 > > > [ 15.397575] device: 'input1': device_add > > > [ 15.444658] imx-dcss 32e00000.display-controller: [drm:drm_update_= vblank_count] updating vblank count on crtc 0: current=3D23, diff=3D1, hw= =3D0 hw_last=3D0 > > > [ 15.465946] PM: Adding info for No Bus:input1 > > > [ 15.494842] imx-dcss 32e00000.display-controller: [drm:drm_update_= vblank_count] updating vblank count on crtc 0: current=3D24, diff=3D1, hw= =3D0 hw_last=3D0 > > > [ 15.511694] input: gpio-keys as /devices/platform/gpio-keys/input/= input1 > > > [ 15.545025] imx-dcss 32e00000.display-controller: [drm:drm_update_= vblank_count] updating vblank count on crtc 0: current=3D25, diff=3D1, hw= =3D0 hw_last=3D0 > > > [ 15.557869] device: 'event1': device_add > > > [ 15.595209] imx-dcss 32e00000.display-controller: [drm:drm_update_= vblank_count] updating vblank count on crtc 0: current=3D26, diff=3D1, hw= =3D0 hw_last=3D0 > > > [ 15.605363] PM: Adding info for No Bus:event1 > > > [ 15.645394] imx-dcss 32e00000.display-controller: [drm:drm_update_= vblank_count] updating vblank count on crtc 0: current=3D27, diff=3D1, hw= =3D0 hw_last=3D0 > > > [ 19.427039] imx-dcss 32e00000.display-controller: [drm:vblank_disa= ble_fn] disabling vblank on crtc 0 > > > [ 19.436135] device: 'wakeup6': device_add > > > [ 19.448202] imx-dcss 32e00000.display-controller: [drm:drm_update_= vblank_count] updating vblank count on crtc 0: current=3D28, diff=3D0, hw= =3D0 hw_last=3D0 > > > = > > > (and there's no further logging from drm from there on). > > > = > > > Would any the above mentioned patches do anything in that area? > > = > > The NWL driver is missing at least one fix that is needed for DCSS to > > work nicely with it. One thing that needs fixed is the polarity. I added > > a patch for that in our tree... :/ > > = > > Currently, in NWL upstream, we have > > = > > adjusted_mode->flags |=3D (DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC); > > adjusted_mode->flags &=3D ~(DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC= ); > > = > > However DCSS works with: > > = > > adjusted->flags &=3D ~(DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC); > > adjusted->flags |=3D (DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC); > = > Thanks! I remember not getting any output at all with DCSS without what > you suggest above but now i get some output and then a hang so there > seems to be something else off. What's the hang about? Any backtrace? Thanks, laurentiu > = > Cheers, > -- Guido > = > > = > > I CCed Robert. He'll work on upstreaming these NWL changes in the follo= wing > > period of time. > > = > > Thanks, > > laurentiu > > = > > > = > > > Cheers, > > > -- Guido > > > = > > > > = > > > > Thanks, > > > > Laurentiu > > > > = > > > > Changes in v8: > > > > * Removed 'select RESET_CONTROLLER" from Kconfig as Philipp pointed > > > > out. SRC is not used in DCSS driver; > > > > * Nothing else changed; > > > > = > > > > Changes in v7: > > > > * Added a patch to initialize the connector using the drm_bridge_c= onnector > > > > API as Sam suggested. Tested it using NWL_DSI and ADV7535 with > > > > Guido's patch [1] applied and one fix for ADV [2]. Also, some ex= tra > > > > patches for ADV and NWL were needed, from our downstream tree, w= hich > > > > will be upstreamed soon by their author; > > > > * Rest of the patches are untouched; > > > > = > > > > [1] https://lists.freedesktop.org/archives/dri-devel/2020-July/2730= 25.html > > > > [2] https://lists.freedesktop.org/archives/dri-devel/2020-July/2731= 32.html > > > > = > > > > Changes in v6: > > > > * Addressed Rob's comment and added "additionalProperties: false" = at > > > > the end of the bindings' properties. However, this change surfac= ed > > > > an issue with the assigned-clock* properties not being documente= d in > > > > the properties section. Added the descriptions and the bindings = patch > > > > will need another review; > > > > * Added an entry for DCSS driver in the MAINTAINERS file; > > > > * Removed the component framework patch altogether; > > > > = > > > > Changes in v5: > > > > * Rebased to latest; > > > > * Took out component framework support and made it a separate patc= h so > > > > that people can still test with HDP driver, which makes use of i= t. > > > > But the idea is to get rid of it once HDP driver's next versions > > > > will remove component framework as well; > > > > * Slight improvement to modesetting: avoid cutting off the pixel c= lock > > > > if the new mode and the old one are equal. Also, in this case, is > > > > not necessary to wait for DTG to shut off. This would allow to s= witch > > > > from 8b RGB to 12b YUV422, for example, with no interruptions (a= t least > > > > from DCSS point of view); > > > > * Do not fire off CTXLD when going to suspend, unless it still has > > > > entries that need to be committed to DCSS; > > > > * Addressed Rob's comments on bindings; > > > > = > > > > Changes in v4: > > > > * Addressed Lucas and Philipp's comments: > > > > * Added DRM_KMS_CMA_HELPER dependency in Kconfig; > > > > * Removed usage of devm_ functions since I'm already doing all t= he > > > > clean-up in the submodules_deinit(); > > > > * Moved the drm_crtc_arm_vblank_event() in dcss_crtc_atomic_flus= h(); > > > > * Removed en_completion variable from dcss_crtc since this was > > > > introduced mainly to avoid vblank timeout warnings which were = fixed > > > > by arming the vblank event in flush() instead of begin(); > > > > * Removed clks_on and irq_enabled flags since all the calls to > > > > enabling/disabling clocks and interrupts were balanced; > > > > * Removed the custom atomic_commit callback and used the DRM core > > > > helper and, in the process, got rid of a workqueue that wasn't > > > > necessary anymore; > > > > * Fixed some minor DT binding issues flagged by Philipp; > > > > * Some other minor changes suggested by Lucas; > > > > * Removed YUV formats from the supported formats as these cannot w= ork > > > > without the HDR10 module CSCs and LUTs. Will add them back when I > > > > will add support for video planes; > > > > = > > > > Changes in v3: > > > > * rebased to latest linux-next and made it compile as drmP.h was > > > > removed; > > > > * removed the patch adding the VIDEO2_PLL clock. It's already appl= ied; > > > > * removed an unnecessary 50ms sleep in the dcss_dtg_sync_set(); > > > > * fixed a a spurious hang reported by Lukas Hartmann and encounter= ed > > > > by me several times; > > > > * mask DPR and DTG interrupts by default, as they may come enabled= from > > > > U-boot; > > > > = > > > > Changes in v2: > > > > * Removed '0x' in node's unit-address both in DT and yaml; > > > > * Made the address region size lowercase, to be consistent; > > > > * Removed some left-over references to P010; > > > > * Added a Kconfig dependency of DRM && ARCH_MXC. This will also si= lence compilation > > > > issues reported by kbuild for other architectures; > > > > = > > > > = > > > > Laurentiu Palcu (5): > > > > drm/imx: compile imx directory by default > > > > drm/imx: Add initial support for DCSS on iMX8MQ > > > > drm/imx/dcss: use drm_bridge_connector API > > > > MAINTAINERS: Add entry for i.MX 8MQ DCSS driver > > > > dt-bindings: display: imx: add bindings for DCSS > > > > = > > > > .../bindings/display/imx/nxp,imx8mq-dcss.yaml | 104 +++ > > > > MAINTAINERS | 8 + > > > > drivers/gpu/drm/Makefile | 2 +- > > > > drivers/gpu/drm/imx/Kconfig | 2 + > > > > drivers/gpu/drm/imx/Makefile | 1 + > > > > drivers/gpu/drm/imx/dcss/Kconfig | 8 + > > > > drivers/gpu/drm/imx/dcss/Makefile | 6 + > > > > drivers/gpu/drm/imx/dcss/dcss-blkctl.c | 70 ++ > > > > drivers/gpu/drm/imx/dcss/dcss-crtc.c | 219 +++++ > > > > drivers/gpu/drm/imx/dcss/dcss-ctxld.c | 424 +++++++++ > > > > drivers/gpu/drm/imx/dcss/dcss-dev.c | 325 +++++++ > > > > drivers/gpu/drm/imx/dcss/dcss-dev.h | 177 ++++ > > > > drivers/gpu/drm/imx/dcss/dcss-dpr.c | 562 ++++++++++++ > > > > drivers/gpu/drm/imx/dcss/dcss-drv.c | 138 +++ > > > > drivers/gpu/drm/imx/dcss/dcss-dtg.c | 409 +++++++++ > > > > drivers/gpu/drm/imx/dcss/dcss-kms.c | 198 +++++ > > > > drivers/gpu/drm/imx/dcss/dcss-kms.h | 44 + > > > > drivers/gpu/drm/imx/dcss/dcss-plane.c | 405 +++++++++ > > > > drivers/gpu/drm/imx/dcss/dcss-scaler.c | 826 ++++++++++++++= ++++ > > > > drivers/gpu/drm/imx/dcss/dcss-ss.c | 180 ++++ > > > > 20 files changed, 4107 insertions(+), 1 deletion(-) > > > > create mode 100644 Documentation/devicetree/bindings/display/imx/n= xp,imx8mq-dcss.yaml > > > > create mode 100644 drivers/gpu/drm/imx/dcss/Kconfig > > > > create mode 100644 drivers/gpu/drm/imx/dcss/Makefile > > > > create mode 100644 drivers/gpu/drm/imx/dcss/dcss-blkctl.c > > > > create mode 100644 drivers/gpu/drm/imx/dcss/dcss-crtc.c > > > > create mode 100644 drivers/gpu/drm/imx/dcss/dcss-ctxld.c > > > > create mode 100644 drivers/gpu/drm/imx/dcss/dcss-dev.c > > > > create mode 100644 drivers/gpu/drm/imx/dcss/dcss-dev.h > > > > create mode 100644 drivers/gpu/drm/imx/dcss/dcss-dpr.c > > > > create mode 100644 drivers/gpu/drm/imx/dcss/dcss-drv.c > > > > create mode 100644 drivers/gpu/drm/imx/dcss/dcss-dtg.c > > > > create mode 100644 drivers/gpu/drm/imx/dcss/dcss-kms.c > > > > create mode 100644 drivers/gpu/drm/imx/dcss/dcss-kms.h > > > > create mode 100644 drivers/gpu/drm/imx/dcss/dcss-plane.c > > > > create mode 100644 drivers/gpu/drm/imx/dcss/dcss-scaler.c > > > > create mode 100644 drivers/gpu/drm/imx/dcss/dcss-ss.c > > > > = > > > > -- = > > > > 2.23.0 > > > > = > > = _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel