From 0f706ec98321dc59a4a5ed7c13ca4006a8e37104 Mon Sep 17 00:00:00 2001
From: Leo Li <sunpeng.li@amd.com>
Date: Wed, 6 Jul 2022 14:48:52 -0400
Subject: drm/amd/display: Add visualconfirm module parameter
Git-commit: 792a0cdde34d417bc2c8266d8015c5fd58d44a0d
Patch-mainline: v6.0-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]

Being able to configure visual confirm at boot or in cmdline is helpful
when debugging.

[How]

Add a module parameter to configure DC visual confirm, which works the
same way as the equivalent debugfs entry.

Signed-off-by: Leo Li <sunpeng.li@amd.com>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h               | 1 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c           | 4 ++++
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 ++
 3 files changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 3aa8ae1bc35a..b075845a5328 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -197,6 +197,7 @@ extern uint amdgpu_smu_memory_pool_size;
 extern int amdgpu_smu_pptable_id;
 extern uint amdgpu_dc_feature_mask;
 extern uint amdgpu_dc_debug_mask;
+extern uint amdgpu_dc_visual_confirm;
 extern uint amdgpu_dm_abm_level;
 extern int amdgpu_backlight;
 extern struct amdgpu_mgpu_info mgpu_info;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 30f8c46f16b4..429fcdf28836 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -168,6 +168,7 @@ int amdgpu_smu_pptable_id = -1;
  */
 uint amdgpu_dc_feature_mask = 2;
 uint amdgpu_dc_debug_mask;
+uint amdgpu_dc_visual_confirm;
 int amdgpu_async_gfx_ring = 1;
 int amdgpu_mcbp;
 int amdgpu_discovery = -1;
@@ -828,6 +829,9 @@ module_param_named(dcfeaturemask, amdgpu_dc_feature_mask, uint, 0444);
 MODULE_PARM_DESC(dcdebugmask, "all debug options disabled (default))");
 module_param_named(dcdebugmask, amdgpu_dc_debug_mask, uint, 0444);
 
+MODULE_PARM_DESC(visualconfirm, "Visual confirm (0 = off (default), 1 = MPO, 5 = PSR)");
+module_param_named(visualconfirm, amdgpu_dc_visual_confirm, uint, 0444);
+
 /**
  * DOC: abmlevel (uint)
  * Override the default ABM (Adaptive Backlight Management) level used for DC
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index a9f9c929dca6..22a3f8972705 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1538,6 +1538,8 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
 	if (amdgpu_dc_debug_mask & DC_FORCE_SUBVP_MCLK_SWITCH)
 		adev->dm.dc->debug.force_subvp_mclk_switch = true;
 
+	adev->dm.dc->debug.visual_confirm = amdgpu_dc_visual_confirm;
+
 	r = dm_dmub_hw_init(adev);
 	if (r) {
 		DRM_ERROR("DMUB interface failed to initialize: status=%d\n", r);
-- 
2.38.1