tree 2c4c64d03f401f0f826f5abec33161155b8bb1cc
parent 4d6a10da79fddcf7460299ab390da74ef2b592f6
author Harry Wentland <harry.wentland@amd.com> 1453500445 -0500
committer Dave Airlie <airlied@redhat.com> 1454649828 +1000

drm: Add drm_fixp_from_fraction and drm_fixp2int_ceil

drm_fixp_from_fraction allows us to create a fixed point directly
from a fraction, rather than creating fixed point values and dividing
later. This avoids overflow of our 64 bit value for large numbers.

drm_fixp2int_ceil allows us to return the ceiling of our fixed point
value.

[airlied: squash Jordan's fix]
32-bit-build-fix: Jordan Lazare <Jordan.Lazare@amd.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>