[PATCH RESEND] drm/amd/pm: drop unneeded dpm features disablement for SMU 13.0.4/11

[Zhang, Yifan]

[AMD Official Use Only - General]

Reviewed-by: Yifan Zhang <yifan1.zhang at amd.com>


-----Original Message-----
From: Huang, Tim <Tim.Huang at amd.com> 
Sent: Saturday, January 28, 2023 11:36 AM
To: amd-gfx at lists.freedesktop.org
Cc: Deucher, Alexander <Alexander.Deucher at amd.com>; Zhang, Yifan <Yifan1.Zhang at amd.com>; Du, Xiaojian <Xiaojian.Du at amd.com>; Ma, Li <Li.Ma at amd.com>; Limonciello, Mario <Mario.Limonciello at amd.com>; Huang, Tim <Tim.Huang at amd.com>
Subject: [PATCH RESEND] drm/amd/pm: drop unneeded dpm features disablement for SMU 13.0.4/11

PMFW will handle the features disablement properly for gpu reset case, driver involvement may cause some unexpected issues.

Signed-off-by: Tim Huang <tim.huang at amd.com>
---
 drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index ec52830dde24..8bae3fe869cd 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
@@ -1497,6 +1497,20 @@ 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.
+	 */
+	if (amdgpu_in_reset(adev)) {
+		switch (adev->ip_versions[MP1_HWIP][0]) {
+		case IP_VERSION(13, 0, 4):
+		case IP_VERSION(13, 0, 11):
+			return 0;
+		default:
+			break;
+		}
+	}
+
 	/*
 	 * For gpu reset, runpm and hibernation through BACO,
 	 * BACO feature has to be kept enabled.
--
2.25.1