drm/amd/display: Disabled seamless boots on DP and renamed power_down_display_on_boot

[WHY]
- We only ever want seamless boots on eDPs
- The naming and logic did not match the context

[HOW]
- Removed unnecessary if statements
- Renamed power_down_display_on_boot to seamless_boot_edp_requested and
swapped the logic
Reviewed-by: Martin Leung <Martin.Leung@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Jarif Aftab <jaraftab@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -1496,10 +1496,10 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
 		init_data.flags.allow_lttpr_non_transparent_mode.bits.DP2_0 = true;
 #endif
 
-	init_data.flags.power_down_display_on_boot = true;
+	init_data.flags.seamless_boot_edp_requested = false;
 
 	if (check_seamless_boot_capability(adev)) {
-		init_data.flags.power_down_display_on_boot = false;
+		init_data.flags.seamless_boot_edp_requested = true;
 		init_data.flags.allow_seamless_boot_optimization = true;
 		DRM_INFO("Seamless boot condition check passed\n");
 	}

drivers/gpu/drm/amd/display/dc/core/dc_link.c

@@ -1019,18 +1019,6 @@ static bool dc_link_detect_helper(struct dc_link *link,
 					link->type != dc_connection_mst_branch)
 				dm_helpers_dp_mst_stop_top_mgr(link->ctx, link);
 
-
-			// For seamless boot, to skip verify link cap, we read UEFI settings and set them as verified.
-			if (reason == DETECT_REASON_BOOT &&
-					!dc_ctx->dc->config.power_down_display_on_boot &&
-					link->link_status.link_active)
-				perform_dp_seamless_boot = true;
-
-			if (perform_dp_seamless_boot) {
-				read_current_link_settings_on_detect(link);
-				link->verified_link_cap = link->reported_link_cap;
-			}
-
 			break;
 		}
 

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

@@ -322,7 +322,7 @@ struct dc_config {
 	bool fbc_support;
 	bool disable_fractional_pwm;
 	bool allow_seamless_boot_optimization;
-	bool power_down_display_on_boot;
+	bool seamless_boot_edp_requested;
 	bool edp_not_connected;
 	bool edp_no_power_sequencing;
 	bool force_enum_edp;

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

@@ -1505,7 +1505,6 @@ void dcn10_init_hw(struct dc *dc)
 		dmub_enable_outbox_notification(dc);
 
 	/* we want to turn off all dp displays before doing detection */
-	if (dc->config.power_down_display_on_boot)
 	dc_link_blank_all_dp_displays(dc);
 
 	/* If taking control over from VBIOS, we may want to optimize our first
@@ -1514,7 +1513,7 @@ void dcn10_init_hw(struct dc *dc)
 	 * Otherwise, if taking control is not possible, we need to power
 	 * everything down.
 	 */
-	if (dcb->funcs->is_accelerated_mode(dcb) || dc->config.power_down_display_on_boot) {
+	if (dcb->funcs->is_accelerated_mode(dcb) || !dc->config.seamless_boot_edp_requested) {
 		if (!is_optimized_init_done) {
 			hws->funcs.init_pipes(dc, dc->current_state);
 			if (dc->res_pool->hubbub->funcs->allow_self_refresh_control)

drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c

@@ -545,7 +545,6 @@ void dcn30_init_hw(struct dc *dc)
 			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)
 	dc_link_blank_all_dp_displays(dc);
 
 	/* If taking control over from VBIOS, we may want to optimize our first
@@ -554,7 +553,7 @@ void dcn30_init_hw(struct dc *dc)
 	 * Otherwise, if taking control is not possible, we need to power
 	 * everything down.
 	 */
-	if (dcb->funcs->is_accelerated_mode(dcb) || dc->config.power_down_display_on_boot) {
+	if (dcb->funcs->is_accelerated_mode(dcb) || !dc->config.seamless_boot_edp_requested) {
 		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,
@@ -566,7 +565,7 @@ void dcn30_init_hw(struct dc *dc)
 	 * To avoid this, power down hardware on boot
 	 * if DIG is turned on and seamless boot not enabled
 	 */
-	if (dc->config.power_down_display_on_boot) {
+	if (!dc->config.seamless_boot_edp_requested) {
 		struct dc_link *edp_links[MAX_NUM_EDP];
 		struct dc_link *edp_link = NULL;
 

drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c

@@ -197,7 +197,6 @@ void dcn31_init_hw(struct dc *dc)
 		dmub_enable_outbox_notification(dc);
 
 	/* we want to turn off all dp displays before doing detection */
-	if (dc->config.power_down_display_on_boot)
 	dc_link_blank_all_dp_displays(dc);
 
 	/* If taking control over from VBIOS, we may want to optimize our first
@@ -206,7 +205,7 @@ void dcn31_init_hw(struct dc *dc)
 	 * Otherwise, if taking control is not possible, we need to power
 	 * everything down.
 	 */
-	if (dcb->funcs->is_accelerated_mode(dcb) || dc->config.power_down_display_on_boot) {
+	if (dcb->funcs->is_accelerated_mode(dcb) || !dc->config.seamless_boot_edp_requested) {
 		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,