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drm/msm/dpu: Fix scale params in plane validation 

[ Upstream commit 4c978caf08 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Kalyan Thota 2020-07-30 19:08:56 +05:30 committed by Greg Kroah-Hartman
parent b2fc347e21
commit 28ffe70a2e
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
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@ -853,9 +853,9 @@ static int dpu_plane_atomic_check(struct drm_plane *plane,
crtc_state = drm_atomic_get_new_crtc_state(state->state,
state->crtc);
min_scale = FRAC_16_16(1, pdpu->pipe_sblk->maxdwnscale);
min_scale = FRAC_16_16(1, pdpu->pipe_sblk->maxupscale);
ret = drm_atomic_helper_check_plane_state(state, crtc_state, min_scale,
pdpu->pipe_sblk->maxupscale << 16,
pdpu->pipe_sblk->maxdwnscale << 16,
true, true);
if (ret) {
DPU_ERROR_PLANE(pdpu, "Check plane state failed (%d)\n", ret);