From: Harry Wentland <harry.wentland@amd.com>
Date: Wed, 24 Jan 2018 11:16:49 -0500
Subject: drm/amd/display: Re-use DCE100 display_power_gating for DCE80
Git-commit: bbad2da8b1c6a4216addcd59ab2999b4467c0a41
Patch-mainline: v4.17-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Both functions are the same

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/display/dc/dce100/dce100_hw_sequencer.c |    2 
 drivers/gpu/drm/amd/display/dc/dce100/dce100_hw_sequencer.h |    4 +
 drivers/gpu/drm/amd/display/dc/dce80/dce80_hw_sequencer.c   |   38 ------------
 3 files changed, 6 insertions(+), 38 deletions(-)

--- a/drivers/gpu/drm/amd/display/dc/dce100/dce100_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dce100/dce100_hw_sequencer.c
@@ -69,7 +69,7 @@ static const struct dce100_hw_seq_reg_of
  ******************************************************************************/
 /***************************PIPE_CONTROL***********************************/
 
-static bool dce100_enable_display_power_gating(
+bool dce100_enable_display_power_gating(
 	struct dc *dc,
 	uint8_t controller_id,
 	struct dc_bios *dcb,
--- a/drivers/gpu/drm/amd/display/dc/dce100/dce100_hw_sequencer.h
+++ b/drivers/gpu/drm/amd/display/dc/dce100/dce100_hw_sequencer.h
@@ -38,5 +38,9 @@ void dce100_set_bandwidth(
 		struct dc_state *context,
 		bool decrease_allowed);
 
+bool dce100_enable_display_power_gating(struct dc *dc, uint8_t controller_id,
+					struct dc_bios *dcb,
+					enum pipe_gating_control power_gating);
+
 #endif /* __DC_HWSS_DCE100_H__ */
 
--- a/drivers/gpu/drm/amd/display/dc/dce80/dce80_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dce80/dce80_hw_sequencer.c
@@ -70,47 +70,11 @@ static const struct dce80_hw_seq_reg_off
 
 /***************************PIPE_CONTROL***********************************/
 
-static bool dce80_enable_display_power_gating(
-	struct dc *dc,
-	uint8_t controller_id,
-	struct dc_bios *dcb,
-	enum pipe_gating_control power_gating)
-{
-	enum bp_result bp_result = BP_RESULT_OK;
-	enum bp_pipe_control_action cntl;
-	struct dc_context *ctx = dc->ctx;
-
-	if (power_gating == PIPE_GATING_CONTROL_INIT)
-		cntl = ASIC_PIPE_INIT;
-	else if (power_gating == PIPE_GATING_CONTROL_ENABLE)
-		cntl = ASIC_PIPE_ENABLE;
-	else
-		cntl = ASIC_PIPE_DISABLE;
-
-	if (!(power_gating == PIPE_GATING_CONTROL_INIT && controller_id != 0)){
-
-		bp_result = dcb->funcs->enable_disp_power_gating(
-						dcb, controller_id + 1, cntl);
-
-		/* Revert MASTER_UPDATE_MODE to 0 because bios sets it 2
-		 * by default when command table is called
-		 */
-		dm_write_reg(ctx,
-			HW_REG_CRTC(mmMASTER_UPDATE_MODE, controller_id),
-			0);
-	}
-
-	if (bp_result == BP_RESULT_OK)
-		return true;
-	else
-		return false;
-}
-
 void dce80_hw_sequencer_construct(struct dc *dc)
 {
 	dce110_hw_sequencer_construct(dc);
 
-	dc->hwss.enable_display_power_gating = dce80_enable_display_power_gating;
+	dc->hwss.enable_display_power_gating = dce100_enable_display_power_gating;
 	dc->hwss.pipe_control_lock = dce_pipe_control_lock;
 	dc->hwss.set_bandwidth = dce100_set_bandwidth;
 }