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| author |   Harry Wentland <harry.wentland@amd.com> | 2016-01-22 17:07:26 -0500 |
|---|---|---|
| committer |   Dave Airlie <airlied@redhat.com> | 2016-02-05 15:23:49 +1000 |
| commit | a9ebb3e46c7ef6112c0da466ef0954673ad36832 (patch) | |
| tree | 95f3d296bbd4292d38388f1fb0b82360e253bc97 /init | |
| parent | drm: Add drm_fixp_from_fraction and drm_fixp2int_ceil (diff) | |
| download | linux-dev-a9ebb3e46c7ef6112c0da466ef0954673ad36832.tar.xz linux-dev-a9ebb3e46c7ef6112c0da466ef0954673ad36832.zip | |
drm/dp/mst: Calculate MST PBN with 31.32 fixed point
Our PBN value overflows the 20 bits integer part of the 20.12
fixed point. We need to use 31.32 fixed point to avoid this.
This happens with display clocks larger than 293122 (at 24 bpp),
which we see with the Sharp (and similar) 4k tiled displays.
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>
Diffstat (limited to 'init')
0 files changed, 0 insertions, 0 deletions