kernel/linux.git/include/uapi/drm/tegra_drm.h, branch v6.6.131

drm/tegra: Add new UAPI to header

2021-08-10T12:48:17+00:00

Update the tegra_drm.h UAPI header, adding the new proposed UAPI. The old staging UAPI is left in for now, with minor modification to avoid name collisions. Signed-off-by: Mikko Perttunen Signed-off-by: Thierry Reding

drm/tegra: Add kerneldoc for UAPI

2018-05-18T22:21:20+00:00

Document the userspace ABI with kerneldoc to provide some information on how to use it. v3: - reword description of arrays and array lengths v2: - keep GEM object creation flags for ABI compatibility - fix typo in struct drm_tegra_syncpt_incr kerneldoc - fix typos in struct drm_tegra_submit kerneldoc - reworded some descriptions as suggested Reviewed-by: Dmitry Osipenko Signed-off-by: Thierry Reding

drm/tegra: Use proper arguments for DRM_TEGRA_CLOSE_CHANNEL IOCTL

2018-05-18T19:52:06+00:00

A separate data structure exists for the DRM_TEGRA_CLOSE_CHANNEL IOCTL, but it is currently unused. The IOCTL was using the data structure for the DRM_TEGRA_OPEN_CHANNEL IOCTL. Reviewed-by: Dmitry Osipenko Tested-by: Dmitry Osipenko Signed-off-by: Thierry Reding

drm/tegra: add extern C guard for the UAPI header

2016-05-13T13:06:17+00:00

Cc: Erik Faye-Lund Signed-off-by: Emil Velikov Acked-by: Thierry Reding

drm: fix inclusion of drm.h in tegra_drm.h

2015-12-10T11:33:23+00:00

Using `#include "drm.h"` instead of `#include ` allow drm headers to be moved in another directory without changes, like for the libdrm imports. Signed-off-by: Gabriel Laskar Reviewed-by: Emil Velikov CC: Emil Velikov CC: Mikko Rapeli

drm/tegra: gem: Return 64-bit offset for mmap(2)

2015-04-02T16:49:23+00:00

On 64-bit targets, tegra_gem_mmap() only returns a partial offset to userspace. As such, subsequent calls to mmap(2) may fail. Change the arguments to use a 64-bit offset to fix this. Signed-off-by: Sean Paul Acked-by: Erik Faye-Lund [treding@nvidia.com: tweak commit message] Signed-off-by: Thierry Reding

drm/tegra: Add SET/GET_FLAGS IOCTLs

2014-08-04T08:07:35+00:00

The DRM_TEGRA_GEM_SET_FLAGS IOCTL can be used to set the flags of a buffer object after it has been allocated or imported. Flags associated with a buffer object can be queried using the DRM_TEGRA_GEM_GET_FLAGS IOCTL. Reviewed-by: Stéphane Marchesin Tested-by: Alexandre Courbot Signed-off-by: Thierry Reding

drm/tegra: Add SET/GET_TILING IOCTLs

2014-08-04T08:07:34+00:00

Currently the tiling parameters of buffer objects can only be set at allocation time, and only a single tiled mode is supported. This new DRM_TEGRA_GEM_SET_TILING IOCTL allows more modes to be set and also allows the tiling mode to be changed after the allocation. This will enable the Tegra DRM driver to import buffers from a GPU and directly scan them out by configuring the display controller appropriately. To complement this, the DRM_TEGRA_GEM_GET_TILING IOCTL can query the current tiling mode of a buffer object. This is necessary when importing buffers via handle (as is done in Mesa for example) so that userspace can determine the proper parameters for the 2D or 3D engines. Reviewed-by: Stéphane Marchesin Tested-by: Alexandre Courbot Signed-off-by: Thierry Reding

drm/tegra: Remove gratuitous pad field

2014-04-16T15:11:04+00:00

The version of the drm_tegra_submit structure that was merged all the way back in 3.10 contains a pad field that was originally intended to properly pad the following __u64 field. Unfortunately it seems like a different field was dropped during review that caused this padding to become unnecessary, but the pad field wasn't removed at that time. One possible side-effect of this is that since the __u64 following the pad is now no longer properly aligned, the compiler may (or may not) introduce padding itself, which results in no predictable ABI. Rectify this by removing the pad field so that all fields are again naturally aligned. Technically this is breaking existing userspace ABI, but given that there aren't any (released) userspace drivers that make use of this yet, the fallout should be minimal. Fixes: d43f81cbaf43 ("drm/tegra: Add gr2d device") Cc: # 3.10 Signed-off-by: Thierry Reding

drm/tegra: Relicense public header under MIT

2014-04-04T07:12:50+00:00

This file will eventually be exported to libdrm, where all the public header files use the MIT license. Reported-by: Erik Faye-Lund Acked-by: Stephen Warren Acked-by: Emil Goode Signed-off-by: Thierry Reding