[PATCH] drm/amdmgpu: don't enable secure display on incompatible platforms

[Jesse Zhang]

[why]
[drm] psp gfx command LOAD_TA(0x1) failed and response status is (0x7)
[drm] psp gfx command INVOKE_CMD(0x3) failed and response status is (0x4)
amdgpu 0000:04:00.0: amdgpu: Secure display: Generic Failure.

[how]
don't enable secure display on incompatible platforms

Suggested-by: Aaron Liu <aaron.liu at amd.com>
Signed-off-by: Jesse zhang <jesse.zhang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/psp_v10_0.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/psp_v10_0.c b/drivers/gpu/drm/amd/amdgpu/psp_v10_0.c
index e1b7fca09666..5f10883da6a2 100644
--- a/drivers/gpu/drm/amd/amdgpu/psp_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/psp_v10_0.c
@@ -57,7 +57,13 @@ static int psp_v10_0_init_microcode(struct psp_context *psp)
 	if (err)
 		return err;
 
-	return psp_init_ta_microcode(psp, ucode_prefix);
+	err = psp_init_ta_microcode(psp, ucode_prefix);
+	if ((adev->ip_versions[GC_HWIP][0] == IP_VERSION(9, 1, 0)) &&
+		(adev->pdev->revision == 0xa1) &&
+		(psp->securedisplay_context.context.bin_desc.fw_version >= 0x27000008)) {
+		adev->psp.securedisplay_context.context.bin_desc.size_bytes = 0;
+	}
+	return err;
 }
 
 static int psp_v10_0_ring_create(struct psp_context *psp,
-- 
2.25.1