From caa985d5e3ee9c87e7446c6ebbc666e9f863c605 Mon Sep 17 00:00:00 2001
From: Kevin Wang <kevin1.wang@amd.com>
Date: Wed, 11 Dec 2019 17:30:26 +0800
Subject: drm/amdgpu: enable gfxoff feature for navi10 asic
Git-commit: d549991ce5d5194d89eafe16085603b38e7cf989
Patch-mainline: v5.6-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322

enable gfxoff feature for some navi10 asics

Signed-off-by: Kevin Wang <kevin1.wang@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
index 4daf20a54cfe..98db25215d0d 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
@@ -614,11 +614,29 @@ static void gfx_v10_0_init_rlc_ext_microcode(struct amdgpu_device *adev)
 			le32_to_cpu(rlc_hdr->reg_list_format_direct_reg_list_length);
 }
 
+static bool gfx_v10_0_navi10_gfxoff_should_enable(struct amdgpu_device *adev)
+{
+	bool ret = false;
+
+	switch (adev->pdev->revision) {
+	case 0xc2:
+	case 0xc3:
+		ret = true;
+		break;
+	default:
+		ret = false;
+		break;
+	}
+
+	return ret ;
+}
+
 static void gfx_v10_0_check_gfxoff_flag(struct amdgpu_device *adev)
 {
 	switch (adev->asic_type) {
 	case CHIP_NAVI10:
-		adev->pm.pp_feature &= ~PP_GFXOFF_MASK;
+		if (!gfx_v10_0_navi10_gfxoff_should_enable(adev))
+			adev->pm.pp_feature &= ~PP_GFXOFF_MASK;
 		break;
 	default:
 		break;
-- 
2.28.0