From: Guchun Chen <guchun.chen@amd.com>
Date: Tue, 10 Jan 2023 03:33:44 +0000 (+0800)
Subject: drm/amd/pm/smu13: BACO is supported when it's in BACO state
X-Git-Tag: v6.1.8~339
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b8e6fc445990dce368950bd9553b31f46b50285e;p=platform%2Fkernel%2Flinux-starfive.git

drm/amd/pm/smu13: BACO is supported when it's in BACO state

commit 972fb53d3605eb6cdf0d6ae9a52e910626a91ff7 upstream.

This leverages the logic in smu11. No need to talk to SMU to
check BACO enablement as it's in BACO state already.

Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.0, 6.1
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c
index 8e4830a..9b96902 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c
@@ -2249,6 +2249,10 @@ bool smu_v13_0_baco_is_support(struct smu_context *smu)
 	    !smu_baco->platform_support)
 		return false;
 
+	/* return true if ASIC is in BACO state already */
+	if (smu_v13_0_baco_get_state(smu) == SMU_BACO_STATE_ENTER)
+		return true;
+
 	if (smu_cmn_feature_is_supported(smu, SMU_FEATURE_BACO_BIT) &&
 	    !smu_cmn_feature_is_enabled(smu, SMU_FEATURE_BACO_BIT))
 		return false;