From: pengzhou <PengJu.Zhou@amd.com>
Date: Wed, 16 Dec 2020 05:14:15 +0000 (+0800)
Subject: drm/amdgpu: do optimization for psp command submit
X-Git-Tag: v5.15~1634^2~22^2~28
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=57995aa8ffb3e47a74763cf9106d34e9e8be9d8d;p=platform%2Fkernel%2Flinux-starfive.git

drm/amdgpu: do optimization for psp command submit

In the psp command submit logic,
the function msleep(1) delayed too long,
Changing it to usleep_range(10, 100) to
have a better performance.

Signed-off-by: Peng Ju Zhou <PengJu.Zhou@amd.com>
Reviewed-by: Emily.Deng <Emily.Deng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index 5d6fc369e32c..2921f881fc66 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -249,7 +249,7 @@ psp_cmd_submit_buf(struct psp_context *psp,
 {
 	int ret;
 	int index;
-	int timeout = 2000;
+	int timeout = 20000;
 	bool ras_intr = false;
 	bool skip_unsupport = false;
 
@@ -282,7 +282,7 @@ psp_cmd_submit_buf(struct psp_context *psp,
 		ras_intr = amdgpu_ras_intr_triggered();
 		if (ras_intr)
 			break;
-		msleep(1);
+		usleep_range(10, 100);
 		amdgpu_asic_invalidate_hdp(psp->adev, NULL);
 	}