drm/amd/display: Make OPTC3 function accessible to other DCN

[Why]
Newer DCN should use optc3

[How]
Declare optc3 vmin/vmax function in header.
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dc.h

@@ -440,6 +440,7 @@ struct dc_clocks {
 	bool prev_p_state_change_support;
 	bool fclk_prev_p_state_change_support;
 	int num_ways;
+	bool fw_based_mclk_switching;
 	int prev_num_ways;
 	enum dtm_pstate dtm_level;
 	int max_supported_dppclk_khz;

drivers/gpu/drm/amd/display/dc/dcn30/dcn30_optc.c

@@ -293,6 +293,11 @@ static void optc3_set_timing_double_buffer(struct timing_generator *optc, bool e
 		   OTG_DRR_TIMING_DBUF_UPDATE_MODE, mode);
 }
 
+void optc3_set_vtotal_min_max(struct timing_generator *optc, int vtotal_min, int vtotal_max)
+{
+	optc1_set_vtotal_min_max(optc, vtotal_min, vtotal_max);
+}
+
 void optc3_tg_init(struct timing_generator *optc)
 {
 	optc3_set_timing_double_buffer(optc, true);

drivers/gpu/drm/amd/display/dc/dcn32/dcn32_init.c

@@ -58,7 +58,7 @@ static const struct hw_sequencer_funcs dcn32_funcs = {
 	.pipe_control_lock = dcn20_pipe_control_lock,
 	.interdependent_update_lock = dcn10_lock_all_pipes,
 	.cursor_lock = dcn10_cursor_lock,
-	.prepare_bandwidth = dcn20_prepare_bandwidth,
+	.prepare_bandwidth = dcn30_prepare_bandwidth,
 	.optimize_bandwidth = dcn20_optimize_bandwidth,
 	.update_bandwidth = dcn20_update_bandwidth,
 	.set_drr = dcn10_set_drr,

drivers/gpu/drm/amd/display/dc/dcn32/dcn32_optc.c

@@ -223,7 +223,7 @@ static struct timing_generator_funcs dcn32_tg_funcs = {
 		.set_vrr_m_const = optc3_set_vrr_m_const,
 		.set_drr = optc1_set_drr,
 		.get_last_used_drr_vtotal = optc2_get_last_used_drr_vtotal,
-		.set_vtotal_min_max = optc1_set_vtotal_min_max,
+		.set_vtotal_min_max = optc3_set_vtotal_min_max,
 		.set_static_screen_control = optc1_set_static_screen_control,
 		.program_stereo = optc1_program_stereo,
 		.is_stereo_left_eye = optc1_is_stereo_left_eye,