revert "drm/amd/display: Add condition to sync eDP SW status and HW status"

[Why]
This change causes regression for S4 resume where gamma is not
programmed. The change incorrectly updates the requested dpms_off
state.

This reverts commit d2b1d6bb.
Signed-off-by: Eric Yang <Eric.Yang2@amd.com>
Reviewed-by: Yongqiang Sun <yongqiang.sun@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c

@@ -1899,8 +1899,6 @@ static const struct dc_vbios_funcs vbios_funcs = {
 
 	.is_accelerated_mode = bios_parser_is_accelerated_mode,
 
-	.is_active_display = bios_is_active_display,
-
 	.set_scratch_critical_state = bios_parser_set_scratch_critical_state,
 
 

drivers/gpu/drm/amd/display/dc/bios/bios_parser_helper.c

@@ -87,96 +87,3 @@ uint32_t bios_get_vga_enabled_displays(
 	return active_disp;
 }
 
-bool bios_is_active_display(
-		struct dc_bios *bios,
-		enum signal_type signal,
-		const struct connector_device_tag_info *device_tag)
-{
-	uint32_t active = 0;
-	uint32_t connected = 0;
-	uint32_t bios_scratch_0 = 0;
-	uint32_t bios_scratch_3 = 0;
-
-	switch (signal)	{
-	case SIGNAL_TYPE_DVI_SINGLE_LINK:
-	case SIGNAL_TYPE_DVI_DUAL_LINK:
-	case SIGNAL_TYPE_HDMI_TYPE_A:
-	case SIGNAL_TYPE_DISPLAY_PORT:
-	case SIGNAL_TYPE_DISPLAY_PORT_MST:
-		{
-			if (device_tag->dev_id.device_type == DEVICE_TYPE_DFP) {
-				switch (device_tag->dev_id.enum_id)	{
-				case 1:
-					{
-						active    = ATOM_S3_DFP1_ACTIVE;
-						connected = 0x0008;	//ATOM_DISPLAY_DFP1_CONNECT
-					}
-					break;
-
-				case 2:
-					{
-						active    = ATOM_S3_DFP2_ACTIVE;
-						connected = 0x0080; //ATOM_DISPLAY_DFP2_CONNECT
-					}
-					break;
-
-				case 3:
-					{
-						active    = ATOM_S3_DFP3_ACTIVE;
-						connected = 0x0200; //ATOM_DISPLAY_DFP3_CONNECT
-					}
-					break;
-
-				case 4:
-					{
-						active    = ATOM_S3_DFP4_ACTIVE;
-						connected = 0x0400;	//ATOM_DISPLAY_DFP4_CONNECT
-					}
-					break;
-
-				case 5:
-					{
-						active    = ATOM_S3_DFP5_ACTIVE;
-						connected = 0x0800; //ATOM_DISPLAY_DFP5_CONNECT
-					}
-					break;
-
-				case 6:
-					{
-						active    = ATOM_S3_DFP6_ACTIVE;
-						connected = 0x0040; //ATOM_DISPLAY_DFP6_CONNECT
-					}
-					break;
-
-				default:
-					break;
-				}
-				}
-			}
-			break;
-
-	case SIGNAL_TYPE_LVDS:
-	case SIGNAL_TYPE_EDP:
-		{
-			active    = ATOM_S3_LCD1_ACTIVE;
-			connected = 0x0002;	//ATOM_DISPLAY_LCD1_CONNECT
-		}
-		break;
-
-	default:
-		break;
-	}
-
-
-	if (bios->regs->BIOS_SCRATCH_0) /*follow up with other asic, todo*/
-		bios_scratch_0 = REG_READ(BIOS_SCRATCH_0);
-	if (bios->regs->BIOS_SCRATCH_3) /*follow up with other asic, todo*/
-		bios_scratch_3 = REG_READ(BIOS_SCRATCH_3);
-
-	bios_scratch_3 &= ATOM_S3_DEVICE_ACTIVE_MASK;
-	if ((active & bios_scratch_3) && (connected & bios_scratch_0))
-		return true;
-
-	return false;
-}
-

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

@@ -35,10 +35,6 @@ bool bios_is_accelerated_mode(struct dc_bios *bios);
 void bios_set_scratch_acc_mode_change(struct dc_bios *bios);
 void bios_set_scratch_critical_state(struct dc_bios *bios, bool state);
 uint32_t bios_get_vga_enabled_displays(struct dc_bios *bios);
-bool bios_is_active_display(
-	struct dc_bios *bios,
-	enum signal_type signal,
-	const struct connector_device_tag_info *device_tag);
 
 #define GET_IMAGE(type, offset) ((type *) bios_get_image(&bp->base, offset, sizeof(type)))
 

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

@@ -86,10 +86,6 @@ struct dc_vbios_funcs {
 
 	bool (*is_accelerated_mode)(
 		struct dc_bios *bios);
-	bool (*is_active_display)(
-		struct dc_bios *bios,
-		enum signal_type signal,
-		const struct connector_device_tag_info *device_tag);
 	void (*set_scratch_critical_state)(
 		struct dc_bios *bios,
 		bool state);
@@ -145,7 +141,6 @@ struct dc_vbios_funcs {
 };
 
 struct bios_registers {
-	uint32_t BIOS_SCRATCH_0;
 	uint32_t BIOS_SCRATCH_3;
 	uint32_t BIOS_SCRATCH_6;
 };

drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c

@@ -1557,7 +1557,6 @@ void dce110_enable_accelerated_mode(struct dc *dc, struct dc_state *context)
 	int i;
 	struct dc_link *edp_link_to_turnoff = NULL;
 	struct dc_link *edp_link = get_link_for_edp(dc);
-	struct dc_bios *bios = dc->ctx->dc_bios;
 	bool can_edp_fast_boot_optimize = false;
 	bool apply_edp_fast_boot_optimization = false;
 
@@ -1584,20 +1583,6 @@ void dce110_enable_accelerated_mode(struct dc *dc, struct dc_state *context)
 			if (context->streams[i]->signal == SIGNAL_TYPE_EDP) {
 				context->streams[i]->apply_edp_fast_boot_optimization = true;
 				apply_edp_fast_boot_optimization = true;
-
-				/* When after S4 and S5, vbios may post edp and previous dpms_off
-				 * doesn't make sense.
-				 * Update dpms_off state to align hw and sw state via check
-				 * vBios scratch register.
-				 */
-				if (bios->funcs->is_active_display)	{
-					const struct connector_device_tag_info *device_tag = &(edp_link->device_tag);
-
-					if (bios->funcs->is_active_display(bios,
-							context->streams[i]->signal,
-							device_tag))
-						context->streams[i]->dpms_off = false;
-				}
 			}
 		}
 	}

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c

@@ -436,7 +436,6 @@ static const struct dcn_optc_mask tg_mask = {
 };
 
 static const struct bios_registers bios_regs = {
-		NBIO_SR(BIOS_SCRATCH_0),
 		NBIO_SR(BIOS_SCRATCH_3),
 		NBIO_SR(BIOS_SCRATCH_6)
 };