[PATCH 83/87] drm/amd/display: avoid power gate domains that doesn't exist

[sunpeng.li at amd.com]

From: Tony Cheng <tony.cheng at amd.com>

Change-Id: I7800685ccebbf8faa2b7185c501ac0ad78e13e48
Signed-off-by: Tony Cheng <tony.cheng at amd.com>
Reviewed-by: Yongqiang Sun <yongqiang.sun at amd.com>
Acked-by: Leo Li <sunpeng.li at amd.com>
---
 .../gpu/drm/amd/display/dc/dce/dce_hwseq.h    |  4 ++--
 .../drm/amd/display/dc/dcn20/dcn20_hwseq.c    | 24 ++++++++++++-------
 2 files changed, 17 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_hwseq.h b/drivers/gpu/drm/amd/display/dc/dce/dce_hwseq.h
index 3a49f1ffb5dd..245b80b92681 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_hwseq.h
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_hwseq.h
@@ -227,8 +227,8 @@
 	SR(DOMAIN7_PG_CONFIG), \
 	SR(DOMAIN8_PG_CONFIG), \
 	SR(DOMAIN9_PG_CONFIG), \
-	SR(DOMAIN10_PG_CONFIG), \
-	SR(DOMAIN11_PG_CONFIG), \
+/*	SR(DOMAIN10_PG_CONFIG), Navi1x HUBP5 not powergate-able*/\
+/*	SR(DOMAIN11_PG_CONFIG), Navi1x DPP5 is not powergate-able */\
 	SR(DOMAIN16_PG_CONFIG), \
 	SR(DOMAIN17_PG_CONFIG), \
 	SR(DOMAIN18_PG_CONFIG), \
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
index b61774d2e8b2..6764ad845cd4 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
@@ -94,25 +94,31 @@ static void enable_power_gating_plane(
 	REG_UPDATE(DOMAIN2_PG_CONFIG, DOMAIN2_POWER_FORCEON, force_on);
 	REG_UPDATE(DOMAIN4_PG_CONFIG, DOMAIN4_POWER_FORCEON, force_on);
 	REG_UPDATE(DOMAIN6_PG_CONFIG, DOMAIN6_POWER_FORCEON, force_on);
-	REG_UPDATE(DOMAIN8_PG_CONFIG, DOMAIN8_POWER_FORCEON, force_on);
-	/*Do not power gate DCHUB5, should be left at HW default, power on permanently*/
-	/*REG_UPDATE(DOMAIN10_PG_CONFIG, DOMAIN10_POWER_FORCEON, force_on);*/
+	if (REG(DOMAIN8_PG_CONFIG))
+		REG_UPDATE(DOMAIN8_PG_CONFIG, DOMAIN8_POWER_FORCEON, force_on);
+	if (REG(DOMAIN10_PG_CONFIG))
+		REG_UPDATE(DOMAIN10_PG_CONFIG, DOMAIN8_POWER_FORCEON, force_on);
 
 	/* DPP0/1/2/3/4/5 */
 	REG_UPDATE(DOMAIN1_PG_CONFIG, DOMAIN1_POWER_FORCEON, force_on);
 	REG_UPDATE(DOMAIN3_PG_CONFIG, DOMAIN3_POWER_FORCEON, force_on);
 	REG_UPDATE(DOMAIN5_PG_CONFIG, DOMAIN5_POWER_FORCEON, force_on);
 	REG_UPDATE(DOMAIN7_PG_CONFIG, DOMAIN7_POWER_FORCEON, force_on);
-	REG_UPDATE(DOMAIN9_PG_CONFIG, DOMAIN9_POWER_FORCEON, force_on);
-	/*Do not power gate DPP5, should be left at HW default, power on permanently*/
-	/*REG_UPDATE(DOMAIN11_PG_CONFIG, DOMAIN11_POWER_FORCEON, force_on);*/
+	if (REG(DOMAIN9_PG_CONFIG))
+		REG_UPDATE(DOMAIN9_PG_CONFIG, DOMAIN9_POWER_FORCEON, force_on);
+	if (REG(DOMAIN11_PG_CONFIG))
+		REG_UPDATE(DOMAIN11_PG_CONFIG, DOMAIN9_POWER_FORCEON, force_on);
 
+	/* DCS0/1/2/3/4/5 */
 	REG_UPDATE(DOMAIN16_PG_CONFIG, DOMAIN16_POWER_FORCEON, force_on);
 	REG_UPDATE(DOMAIN17_PG_CONFIG, DOMAIN17_POWER_FORCEON, force_on);
 	REG_UPDATE(DOMAIN18_PG_CONFIG, DOMAIN18_POWER_FORCEON, force_on);
-	REG_UPDATE(DOMAIN19_PG_CONFIG, DOMAIN19_POWER_FORCEON, force_on);
-	REG_UPDATE(DOMAIN20_PG_CONFIG, DOMAIN20_POWER_FORCEON, force_on);
-	REG_UPDATE(DOMAIN21_PG_CONFIG, DOMAIN21_POWER_FORCEON, force_on);
+	if (REG(DOMAIN19_PG_CONFIG))
+		REG_UPDATE(DOMAIN19_PG_CONFIG, DOMAIN19_POWER_FORCEON, force_on);
+	if (REG(DOMAIN20_PG_CONFIG))
+		REG_UPDATE(DOMAIN20_PG_CONFIG, DOMAIN20_POWER_FORCEON, force_on);
+	if (REG(DOMAIN21_PG_CONFIG))
+		REG_UPDATE(DOMAIN21_PG_CONFIG, DOMAIN21_POWER_FORCEON, force_on);
 }
 
 void dcn20_dccg_init(struct dce_hwseq *hws)
-- 
2.22.0