drm/amd/display: program output tf when required

[Description]
Output transfer function must be programmed per pipe as part of a front end
update when the plane changes, or output transfer function changes for a
given plane.

Reviewed-by: Alvin Lee <[email protected]>
Acked-by: Jasdeep Dhillon <[email protected]>
Signed-off-by: Dillon Varone <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

Author: Dillon Varone

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c

@@ -1741,7 +1741,10 @@ static void dcn20_program_pipe(
 	 * only do gamma programming for powering on, internal memcmp to avoid
 	 * updating on slave planes
 	 */
-	if (pipe_ctx->update_flags.bits.enable || pipe_ctx->stream->update_flags.bits.out_tf)
+	if (pipe_ctx->update_flags.bits.enable ||
+			pipe_ctx->update_flags.bits.plane_changed ||
+			pipe_ctx->stream->update_flags.bits.out_tf ||
+			pipe_ctx->plane_state->update_flags.bits.output_tf_change)
 		hws->funcs.set_output_transfer_func(dc, pipe_ctx, pipe_ctx->stream);
 
 	/* If the pipe has been enabled or has a different opp, we