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drm/msm/dpu: Fix scale params in plane validation
Plane validation uses an API drm_calc_scale which will
return src/dst value as a scale ratio.
when viewing the range on a scale the values should fall in as
Upscale ratio < Unity scale < Downscale ratio for src/dst formula
Fix the min and max scale ratios to suit the API accordingly.
Signed-off-by: Kalyan Thota <kalyan_t@codeaurora.org>
Tested-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Signed-off-by: Rob Clark <robdclark@chromium.org>