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 [2] and a recent Weston [3] have support for the rotated display panels, but this is more than good enough for the starter. [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://gitlab.freedesktop.org/wayland/weston/-/merge_requests/315 Changelog: v3: - Factored out the panel patches into standalone series [4] because this series doesn't have hard dependency on the panel patches and it should be nicer to review and apply the properly grouped patches. - The DRM_MODE_ROTATE_180 now isn't passed to drm_rotation_simplify(), like it was suggested by Ville Syrjälä in the comment to v2. - Added clarifying comment for the tegra_fb_is_bottom_up() in the code. [4] https://lore.kernel.org/lkml/20200617231842.30671-1-digetx@xxxxxxxxx/T/#t Dmitry Osipenko (3): drm/tegra: plane: Rename bottom_up to reflect_y drm/tegra: plane: Support horizontal reflection drm/tegra: plane: Support 180° rotation drivers/gpu/drm/tegra/dc.c | 46 ++++++++++++++++++++++++++++------- drivers/gpu/drm/tegra/dc.h | 3 ++- drivers/gpu/drm/tegra/plane.c | 3 ++- drivers/gpu/drm/tegra/plane.h | 3 ++- 4 files changed, 43 insertions(+), 12 deletions(-) -- 2.26.0
