drm/amd/display: Register init

[Why]
Driver re-initialize registers already set in FW

[How]
Transfer init to FW
Signed-off-by: Igor Kravchenko <Igor.Kravchenko@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Eryk Brol <eryk.brol@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c

@@ -1255,6 +1255,7 @@ void dcn10_init_hw(struct dc *dc)
 	struct dc_bios *dcb = dc->ctx->dc_bios;
 	struct resource_pool *res_pool = dc->res_pool;
 	uint32_t backlight = MAX_BACKLIGHT_LEVEL;
+	bool   is_optimized_init_done = false;
 
 	if (dc->clk_mgr && dc->clk_mgr->funcs->init_clocks)
 		dc->clk_mgr->funcs->init_clocks(dc->clk_mgr);
@@ -1288,7 +1289,9 @@ void dcn10_init_hw(struct dc *dc)
 	if (!dcb->funcs->is_accelerated_mode(dcb))
 		hws->funcs.disable_vga(dc->hwseq);
 
-	if (!dc_dmub_srv_optimized_init_done(dc->ctx->dmub_srv))
+	is_optimized_init_done = dc_dmub_srv_optimized_init_done(dc->ctx->dmub_srv);
+
+	if (!is_optimized_init_done)
 		hws->funcs.bios_golden_init(dc);
 
 	if (dc->ctx->dc_bios->fw_info_valid) {
@@ -1323,7 +1326,8 @@ void dcn10_init_hw(struct dc *dc)
 		 */
 		struct dc_link *link = dc->links[i];
 
-		link->link_enc->funcs->hw_init(link->link_enc);
+		if (!is_optimized_init_done)
+			link->link_enc->funcs->hw_init(link->link_enc);
 
 		/* Check for enabled DIG to identify enabled display */
 		if (link->link_enc->funcs->is_dig_enabled &&
@@ -1332,9 +1336,11 @@ void dcn10_init_hw(struct dc *dc)
 	}
 
 	/* Power gate DSCs */
-	for (i = 0; i < res_pool->res_cap->num_dsc; i++)
-		if (hws->funcs.dsc_pg_control != NULL)
-			hws->funcs.dsc_pg_control(hws, res_pool->dscs[i]->inst, false);
+	if (!is_optimized_init_done) {
+		for (i = 0; i < res_pool->res_cap->num_dsc; i++)
+			if (hws->funcs.dsc_pg_control != NULL)
+				hws->funcs.dsc_pg_control(hws, res_pool->dscs[i]->inst, false);
+	}
 
 	/* we want to turn off all dp displays before doing detection */
 	if (dc->config.power_down_display_on_boot) {
@@ -1379,10 +1385,12 @@ void dcn10_init_hw(struct dc *dc)
 	 * everything down.
 	 */
 	if (dcb->funcs->is_accelerated_mode(dcb) || dc->config.power_down_display_on_boot) {
-		hws->funcs.init_pipes(dc, dc->current_state);
-		if (dc->res_pool->hubbub->funcs->allow_self_refresh_control)
-			dc->res_pool->hubbub->funcs->allow_self_refresh_control(dc->res_pool->hubbub,
-					!dc->res_pool->hubbub->ctx->dc->debug.disable_stutter);
+		if (!is_optimized_init_done) {
+			hws->funcs.init_pipes(dc, dc->current_state);
+			if (dc->res_pool->hubbub->funcs->allow_self_refresh_control)
+				dc->res_pool->hubbub->funcs->allow_self_refresh_control(dc->res_pool->hubbub,
+						!dc->res_pool->hubbub->ctx->dc->debug.disable_stutter);
+		}
 	}
 
 	/* In headless boot cases, DIG may be turned
@@ -1417,30 +1425,34 @@ void dcn10_init_hw(struct dc *dc)
 		}
 	}
 
-	for (i = 0; i < res_pool->audio_count; i++) {
-		struct audio *audio = res_pool->audios[i];
+	if (!is_optimized_init_done) {
 
-		audio->funcs->hw_init(audio);
-	}
+		for (i = 0; i < res_pool->audio_count; i++) {
+			struct audio *audio = res_pool->audios[i];
 
-	for (i = 0; i < dc->link_count; i++) {
-		struct dc_link *link = dc->links[i];
+			audio->funcs->hw_init(audio);
+		}
 
-		if (link->panel_cntl)
-			backlight = link->panel_cntl->funcs->hw_init(link->panel_cntl);
-	}
+		for (i = 0; i < dc->link_count; i++) {
+			struct dc_link *link = dc->links[i];
 
-	if (abm != NULL)
-		abm->funcs->abm_init(abm, backlight);
+			if (link->panel_cntl)
+				backlight = link->panel_cntl->funcs->hw_init(link->panel_cntl);
+		}
 
-	if (dmcu != NULL && !dmcu->auto_load_dmcu)
-		dmcu->funcs->dmcu_init(dmcu);
+		if (abm != NULL)
+			abm->funcs->abm_init(abm, backlight);
+
+		if (dmcu != NULL && !dmcu->auto_load_dmcu)
+			dmcu->funcs->dmcu_init(dmcu);
+	}
 
 	if (abm != NULL && dmcu != NULL)
 		abm->dmcu_is_running = dmcu->funcs->is_dmcu_initialized(dmcu);
 
 	/* power AFMT HDMI memory TODO: may move to dis/en output save power*/
-	REG_WRITE(DIO_MEM_PWR_CTRL, 0);
+	if (!is_optimized_init_done)
+		REG_WRITE(DIO_MEM_PWR_CTRL, 0);
 
 	if (!dc->debug.disable_clock_gate) {
 		/* enable all DCN clock gating */