[PATCH 04/17] Revert "drm/amd/display: Move DCN314 DOMAIN power control to DMCUB"

[Hamza Mahfooz]

From: Daniel Miess <daniel.miess at amd.com>

This reverts commit e383b12709e32d6494c948422070c2464b637e44.

Controling hubp power gating using the DMCUB isn't stable so we
are reverting this change to move control back into the driver.

Cc: stable at vger.kernel.org # 6.3+
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas at amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz at amd.com>
Signed-off-by: Daniel Miess <daniel.miess at amd.com>
---
 .../drm/amd/display/dc/dcn314/dcn314_hwseq.c  | 21 -------------------
 .../drm/amd/display/dc/dcn314/dcn314_hwseq.h  |  2 --
 .../drm/amd/display/dc/dcn314/dcn314_init.c   |  2 +-
 3 files changed, 1 insertion(+), 24 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.c
index 7a43f8868500..32a1c3105089 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.c
@@ -424,27 +424,6 @@ void dcn314_dpp_root_clock_control(struct dce_hwseq *hws, unsigned int dpp_inst,
 			hws->ctx->dc->res_pool->dccg, dpp_inst, clock_on);
 }
 
-void dcn314_hubp_pg_control(struct dce_hwseq *hws, unsigned int hubp_inst, bool power_on)
-{
-	struct dc_context *ctx = hws->ctx;
-	union dmub_rb_cmd cmd;
-
-	if (hws->ctx->dc->debug.disable_hubp_power_gate)
-		return;
-
-	PERF_TRACE();
-
-	memset(&cmd, 0, sizeof(cmd));
-	cmd.domain_control.header.type = DMUB_CMD__VBIOS;
-	cmd.domain_control.header.sub_type = DMUB_CMD__VBIOS_DOMAIN_CONTROL;
-	cmd.domain_control.header.payload_bytes = sizeof(cmd.domain_control.data);
-	cmd.domain_control.data.inst = hubp_inst;
-	cmd.domain_control.data.power_gate = !power_on;
-
-	dm_execute_dmub_cmd(ctx, &cmd, DM_DMUB_WAIT_TYPE_WAIT);
-
-	PERF_TRACE();
-}
 static void apply_symclk_on_tx_off_wa(struct dc_link *link)
 {
 	/* There are use cases where SYMCLK is referenced by OTG. For instance
diff --git a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.h b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.h
index 96035c75e0df..3841da67a737 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.h
@@ -43,8 +43,6 @@ void dcn314_set_pixels_per_cycle(struct pipe_ctx *pipe_ctx);
 
 void dcn314_resync_fifo_dccg_dio(struct dce_hwseq *hws, struct dc *dc, struct dc_state *context);
 
-void dcn314_hubp_pg_control(struct dce_hwseq *hws, unsigned int hubp_inst, bool power_on);
-
 void dcn314_dpp_root_clock_control(struct dce_hwseq *hws, unsigned int dpp_inst, bool clock_on);
 
 void dcn314_disable_link_output(struct dc_link *link, const struct link_resource *link_res, enum signal_type signal);
diff --git a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_init.c b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_init.c
index 86d6a514dec0..ca8fe55c33b8 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_init.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_init.c
@@ -139,7 +139,7 @@ static const struct hwseq_private_funcs dcn314_private_funcs = {
 	.plane_atomic_power_down = dcn10_plane_atomic_power_down,
 	.enable_power_gating_plane = dcn314_enable_power_gating_plane,
 	.dpp_root_clock_control = dcn314_dpp_root_clock_control,
-	.hubp_pg_control = dcn314_hubp_pg_control,
+	.hubp_pg_control = dcn31_hubp_pg_control,
 	.program_all_writeback_pipes_in_tree = dcn30_program_all_writeback_pipes_in_tree,
 	.update_odm = dcn314_update_odm,
 	.dsc_pg_control = dcn314_dsc_pg_control,
-- 
2.40.1