Hi Laurentiu, On Fri, Jul 31, 2020 at 10:54:29AM +0200, Guido Günther wrote: > Hi, > On Fri, Jul 31, 2020 at 11:18:28AM +0300, Laurentiu Palcu wrote: > > From: Laurentiu Palcu <laurentiu.palcu@xxxxxxx> > > > > Hi, > > > > This patchset adds initial DCSS support for iMX8MQ chip. Initial support > > includes only graphics plane support (no video planes), no HDR10 capabilities, > > no graphics decompression (only linear, tiled and super-tiled buffers allowed). > > > > Support for the rest of the features will be added incrementally, in subsequent > > patches. > > > > The patchset was tested with both HDP driver (in the downstream tree) and the upstream > > MIPI-DSI driver (with a couple of patches on top, to make it work correctly with DCSS). > > > > Thanks, > > Laurentiu > > > > Changes in v9: > > * Fixed a compilation issue found by Guido in his setup: 'select > > VIDEOMODE_HELPERS' was missing from Kconfig; > > * Use imx8mq-clock.h in the bindings file so one can understand what > > those clock values mean; > > * no other changes done. Couldn't address the hang Guido reported as > > it's not happening in my setup. However, in my tree, there are some > > extra NWL and ADV patches applied on top of upstream ones... Also, > > removing them and testing only with upstream, even if there's no > > image out, does not produce a hang... :/ > > I don't think this should hold up merging. And i retested your v9 series on next-20200903 on a librem5 devkit and it works. Looking back I spotted an error in my clock configuration, so Tested-by: Guido Günther <agx@xxxxxxxxxxx> Cheers, -- Guido > Cheers, > -- Guido > > > > > 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_connector > > 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 extra > > patches for ADV and NWL were needed, from our downstream tree, which > > will be upstreamed soon by their author; > > * Rest of the patches are untouched; > > > > [1] https://lists.freedesktop.org/archives/dri-devel/2020-July/273025.html > > [2] https://lists.freedesktop.org/archives/dri-devel/2020-July/273132.html > > > > Changes in v6: > > * Addressed Rob's comment and added "additionalProperties: false" at > > the end of the bindings' properties. However, this change surfaced > > an issue with the assigned-clock* properties not being documented 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 patch so > > that people can still test with HDP driver, which makes use of it. > > 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 clock > > 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 switch > > from 8b RGB to 12b YUV422, for example, with no interruptions (at 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 the > > clean-up in the submodules_deinit(); > > * Moved the drm_crtc_arm_vblank_event() in dcss_crtc_atomic_flush(); > > * 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 work > > 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 applied; > > * removed an unnecessary 50ms sleep in the dcss_dtg_sync_set(); > > * fixed a a spurious hang reported by Lukas Hartmann and encountered > > 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 silence 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 | 108 +++ > > 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 | 9 + > > 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, 4112 insertions(+), 1 deletion(-) > > create mode 100644 Documentation/devicetree/bindings/display/imx/nxp,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 > >
