From 27e908cd9983ee6a10a258a557331df68e685cd9 Mon Sep 17 00:00:00 2001
From: Taimur Hassan <Syed.Hassan@amd.com>
Date: Thu, 18 Aug 2022 11:18:33 -0400
Subject: drm/amd/display: Allow PHY state update between same states
Git-commit: 36527db318080d36138c802ca9e03a09e5a5fef2
Patch-mainline: v6.1-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225 jsc#PED-2849
[Why & How]
In some cases, there are calls to transition from TX_ON to TX_ON, such as
when using MST or during resolution change. This is expected, so allow HW
programming to continue.
Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com>
Acked-by: Brian Chang <Brian.Chang@amd.com>
Signed-off-by: Taimur Hassan <Syed.Hassan@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c
index 4597ba6d30bb..16311d5c1306 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c
@@ -1280,9 +1280,6 @@ void dcn32_update_phy_state(struct dc_state *state, struct pipe_ctx *pipe_ctx,
{
enum phy_state current_state = pipe_ctx->stream->link->phy_state;
- if (current_state == target_state)
- return;
-
if (target_state == TX_OFF_SYMCLK_OFF) {
core_link_disable_stream(pipe_ctx);
pipe_ctx->stream->link->phy_state = TX_OFF_SYMCLK_OFF;
--
2.38.1