linux-kernel - [PATCH AUTOSEL 6.4 07/11] drm/amd/pm: skip the RLC stop when S0i3 suspend for SMU v13.0.4/11

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Date:   Tue, 22 Aug 2023 07:35:49 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Tim Huang <Tim.Huang@....com>,
        Mario Limonciello <mario.limonciello@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Sasha Levin <sashal@...nel.org>, evan.quan@....com,
        christian.koenig@....com, Xinhui.Pan@....com, airlied@...il.com,
        daniel@...ll.ch, Hawking.Zhang@....com, kenneth.feng@....com,
        lijo.lazar@....com, Kun.Liu2@....com, trix@...hat.com,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 6.4 07/11] drm/amd/pm: skip the RLC stop when S0i3 suspend for SMU v13.0.4/11

From: Tim Huang <Tim.Huang@....com>

[ Upstream commit 730d44e1fa306a20746ad4a85da550662aed9daa ]

For SMU v13.0.4/11, driver does not need to stop RLC for S0i3,
the firmwares will handle that properly.

Signed-off-by: Tim Huang <Tim.Huang@....com>
Reviewed-by: Mario Limonciello <mario.limonciello@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index ea03e8d9a3f6c..818379276a582 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
@@ -1573,9 +1573,9 @@ static int smu_disable_dpms(struct smu_context *smu)
 
 	/*
 	 * For SMU 13.0.4/11, PMFW will handle the features disablement properly
-	 * for gpu reset case. Driver involvement is unnecessary.
+	 * for gpu reset and S0i3 cases. Driver involvement is unnecessary.
 	 */
-	if (amdgpu_in_reset(adev)) {
+	if (amdgpu_in_reset(adev) || adev->in_s0ix) {
 		switch (adev->ip_versions[MP1_HWIP][0]) {
 		case IP_VERSION(13, 0, 4):
 		case IP_VERSION(13, 0, 11):
-- 
2.40.1