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    Subject[PATCH AUTOSEL 5.13 090/189] drm/amd/display: Update scaling settings on modeset
    Date
    From: Roman Li <roman.li@amd.com>

    [ Upstream commit c521fc316d12fb9ea7b7680e301d673bceda922e ]

    [Why]
    We update scaling settings when scaling mode has been changed.
    However when changing mode from native resolution the scaling mode previously
    set gets ignored.

    [How]
    Perform scaling settings update on modeset.

    Signed-off-by: Roman Li <roman.li@amd.com>
    Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
    Acked-by: Stylon Wang <stylon.wang@amd.com>
    Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 ++-
    1 file changed, 2 insertions(+), 1 deletion(-)

    diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
    index 62663e287b21..58577f7a57c1 100644
    --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
    +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
    @@ -9472,7 +9472,8 @@ static int dm_update_crtc_state(struct amdgpu_display_manager *dm,
    BUG_ON(dm_new_crtc_state->stream == NULL);

    /* Scaling or underscan settings */
    - if (is_scaling_state_different(dm_old_conn_state, dm_new_conn_state))
    + if (is_scaling_state_different(dm_old_conn_state, dm_new_conn_state) ||
    + drm_atomic_crtc_needs_modeset(new_crtc_state))
    update_stream_scaling_settings(
    &new_crtc_state->mode, dm_new_conn_state, dm_new_crtc_state->stream);

    --
    2.30.2
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