linux-kernel - [PATCH AUTOSEL 6.12 367/486] drm/amd/display: Support multiple options during psr entry.

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Message-Id: <20250505223922.2682012-367-sashal@kernel.org>
Date: Mon,  5 May 2025 18:37:23 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Martin Tsai <Martin.Tsai@....com>,
	Anthony Koo <anthony.koo@....com>,
	Alex Hung <alex.hung@....com>,
	Daniel Wheeler <daniel.wheeler@....com>,
	Alex Deucher <alexander.deucher@....com>,
	Sasha Levin <sashal@...nel.org>,
	harry.wentland@....com,
	sunpeng.li@....com,
	christian.koenig@....com,
	airlied@...il.com,
	simona@...ll.ch,
	siqueira@...lia.com,
	dennis.chan@....com,
	robin.chen@....com,
	mwen@...lia.com,
	Kaitlyn.Tse@....com,
	george.shen@....com,
	Wayne.Lin@....com,
	Gabe.Teeger@....com,
	Cruise.Hung@....com,
	Ovidiu.Bunea@....com,
	wenjing.liu@....com,
	Zhongwei.Zhang@....com,
	chiahsuan.chung@....com,
	duncan.ma@....com,
	jack.chang@....com,
	zaeem.mohamed@....com,
	nicholas.kazlauskas@....com,
	Syed.Hassan@....com,
	dillon.varone@....com,
	aric.cyr@....com,
	amd-gfx@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 6.12 367/486] drm/amd/display: Support multiple options during psr entry.

From: Martin Tsai <Martin.Tsai@....com>

[ Upstream commit 3a5fa55455db6a11248a25f24570c365f9246144 ]

[WHY]
Some panels may not handle idle pattern properly during PSR entry.

[HOW]
Add a condition to allow multiple options on power down
sequence during PSR1 entry.

Reviewed-by: Anthony Koo <anthony.koo@....com>
Signed-off-by: Martin Tsai <Martin.Tsai@....com>
Signed-off-by: Alex Hung <alex.hung@....com>
Tested-by: Daniel Wheeler <daniel.wheeler@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/amd/display/dc/dc_types.h       | 7 +++++++
 drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c   | 4 ++++
 drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h | 6 ++++++
 3 files changed, 17 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dc_types.h b/drivers/gpu/drm/amd/display/dc/dc_types.h
index c8bdbbba44ef9..1aca9e96c474f 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_types.h
@@ -1009,6 +1009,13 @@ struct psr_settings {
 	unsigned int psr_sdp_transmit_line_num_deadline;
 	uint8_t force_ffu_mode;
 	unsigned int psr_power_opt;
+
+	/**
+	 * Some panels cannot handle idle pattern during PSR entry.
+	 * To power down phy before disable stream to avoid sending
+	 * idle pattern.
+	 */
+	uint8_t power_down_phy_before_disable_stream;
 };
 
 enum replay_coasting_vtotal_type {
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c b/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c
index cae18f8c1c9a0..8821153d0ac3b 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c
@@ -419,6 +419,10 @@ static bool dmub_psr_copy_settings(struct dmub_psr *dmub,
 	copy_settings_data->relock_delay_frame_cnt = 0;
 	if (link->dpcd_caps.sink_dev_id == DP_BRANCH_DEVICE_ID_001CF8)
 		copy_settings_data->relock_delay_frame_cnt = 2;
+
+	copy_settings_data->power_down_phy_before_disable_stream =
+		link->psr_settings.power_down_phy_before_disable_stream;
+
 	copy_settings_data->dsc_slice_height = psr_context->dsc_slice_height;
 
 	dc_wake_and_execute_dmub_cmd(dc, &cmd, DM_DMUB_WAIT_TYPE_WAIT);
diff --git a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
index 7835100b37c41..d743368303682 100644
--- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
+++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
@@ -2869,6 +2869,12 @@ struct dmub_cmd_psr_copy_settings_data {
 	 * Some panels request main link off before xth vertical line
 	 */
 	uint16_t poweroff_before_vertical_line;
+	/**
+	 * Some panels cannot handle idle pattern during PSR entry.
+	 * To power down phy before disable stream to avoid sending
+	 * idle pattern.
+	 */
+	uint8_t power_down_phy_before_disable_stream;
 };
 
 /**
-- 
2.39.5