[PATCH] drm/amd/powerplay: clear VBIOS scratchs on baco exit V2

[Evan Quan]

This is needed for coming asic init on performing gpu reset.

V2: use non-asic specific programing way

Change-Id: If3671a24d239e3d288665fadaa2c40c87d5da40b
Signed-off-by: Evan Quan <evan.quan at amd.com>
---
 drivers/gpu/drm/amd/powerplay/smu_v11_0.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
index f5469ad43929..7781d245f8ef 100644
--- a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
+++ b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
@@ -1676,10 +1676,17 @@ int smu_v11_0_baco_set_state(struct smu_context *smu, enum smu_baco_state state)
 		}
 	} else {
 		ret = smu_send_smc_msg(smu, SMU_MSG_ExitBaco);
+		if (ret)
+			goto out;
+
 		bif_doorbell_intr_cntl = REG_SET_FIELD(bif_doorbell_intr_cntl,
 						BIF_DOORBELL_INT_CNTL,
 						DOORBELL_INTERRUPT_DISABLE, 0);
 		WREG32_SOC15(NBIO, 0, mmBIF_DOORBELL_INT_CNTL, bif_doorbell_intr_cntl);
+
+		/* clear vbios scratch 6 and 7 for coming asic reinit */
+		WREG32(adev->bios_scratch_reg_offset + 6, 0);
+		WREG32(adev->bios_scratch_reg_offset + 7, 0);
 	}
 	if (ret)
 		goto out;
-- 
2.24.0