Hello! This series adds 180° display plane rotation support to the NVIDIA Tegra DRM driver which is needed for devices that have display panel physically mounted upside-down, like Nexus 7 tablet device for example [1]. Since DRM panel rotation is a new thing for a userspace, currently only Opentegra Xorg driver handles the rotated display panel [2], but this is good enough for the start. Note that later on it should be possible to implement a transparent 180° display rotation for Tegra DRM driver which will remove the need to have a bleeding edge userspace that knows how to rotate display planes and I'm slowly working on it. For the starter we can go with the minimal rotation support, so it's not a blocker. This series is based on the work that was made by Derek Basehore for the Mediatek driver [3], his patch is included into this patchset. I added my tested-by tag to the Derek's patch. Please review and apply, thanks in advance! [1] https://patchwork.ozlabs.org/project/linux-tegra/patch/20200607154327.18589-3-digetx@xxxxxxxxx/ [2] https://github.com/grate-driver/xf86-video-opentegra/commit/28eb20a3959bbe5bc3a3b67e55977093fd5114ca [3] https://lkml.org/lkml/2020/3/5/1119 Changelog: v2: - Dropped "drm/panel: Set display info in panel attach" patch, which turned out to be obsolete now. - Renamed the cover-latter, hopefully this will fix the bouncing emails. Derek Basehore (1): drm/panel: Add helper for reading DT rotation Dmitry Osipenko (4): drm/panel: lvds: Set up panel orientation drm/tegra: plane: Rename bottom_up to reflect_y drm/tegra: plane: Support horizontal reflection mode drm/tegra: plane: Support 180° rotation drivers/gpu/drm/drm_panel.c | 43 ++++++++++++++++++++++++++++++ drivers/gpu/drm/panel/panel-lvds.c | 8 ++++++ drivers/gpu/drm/tegra/dc.c | 43 ++++++++++++++++++++++++------ drivers/gpu/drm/tegra/dc.h | 3 ++- drivers/gpu/drm/tegra/plane.c | 3 ++- drivers/gpu/drm/tegra/plane.h | 3 ++- include/drm/drm_panel.h | 9 +++++++ 7 files changed, 101 insertions(+), 11 deletions(-) -- 2.26.0
