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| author | Eric Anholt <eric@anholt.net> | 2016-07-01 13:10:38 -0700 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2016-07-14 08:08:35 -0700 |
| commit | af713795c59fea36161a7debf97dbc10bf652cf7 (patch) | |
| tree | 49f9f82095bd764640e6edf4d416239f96f8f426 /Documentation | |
| parent | deb4765db386db67626ffd075d8b5eb5fdf9c4f6 (diff) | |
drm/vc4: Add a getparam ioctl for getting the V3D identity regs.
As I extend the driver to support different V3D revisions, userspace
needs to know what version it's targeting. This is most easily
detected using the V3D identity registers.
v2: Make sure V3D is runtime PM on when reading the registers.
v3: Switch to a 64-bit param value (suggested by Rob Clark in review)
Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> (v2)
Reviewed-by: Rob Clark <robdclark@gmail.com> (v3, over irc)
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions