drm/amdgpu: add JPEG2.0 decode ring test

Use register from JPEG tile, the UVD tile reg won't work for JPEG
Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c

@@ -631,19 +631,17 @@ int amdgpu_vcn_jpeg_ring_test_ring(struct amdgpu_ring *ring)
 	unsigned i;
 	int r;
 
-	WREG32(SOC15_REG_OFFSET(UVD, 0, mmUVD_SCRATCH9), 0xCAFEDEAD);
+	WREG32(adev->vcn.external.jpeg_pitch, 0xCAFEDEAD);
 	r = amdgpu_ring_alloc(ring, 3);
-
 	if (r)
 		return r;
 
-	amdgpu_ring_write(ring,
-		PACKETJ(SOC15_REG_OFFSET(UVD, 0, mmUVD_SCRATCH9), 0, 0, 0));
+	amdgpu_ring_write(ring, PACKET0(adev->vcn.internal.jpeg_pitch, 0));
 	amdgpu_ring_write(ring, 0xDEADBEEF);
 	amdgpu_ring_commit(ring);
 
 	for (i = 0; i < adev->usec_timeout; i++) {
-		tmp = RREG32(SOC15_REG_OFFSET(UVD, 0, mmUVD_SCRATCH9));
+		tmp = RREG32(adev->vcn.external.jpeg_pitch);
 		if (tmp == 0xDEADBEEF)
 			break;
 		DRM_UDELAY(1);

drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h

@@ -93,6 +93,7 @@ struct amdgpu_vcn_reg{
 	unsigned	cmd;
 	unsigned	nop;
 	unsigned	scratch9;
+	unsigned	jpeg_pitch;
 };
 
 struct amdgpu_vcn {

drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c

@@ -154,6 +154,8 @@ static int vcn_v1_0_sw_init(void *handle)
 		return r;
 
 	adev->vcn.pause_dpg_mode = vcn_v1_0_pause_dpg_mode;
+	adev->vcn.internal.jpeg_pitch = adev->vcn.external.jpeg_pitch =
+		SOC15_REG_OFFSET(UVD, 0, mmUVD_JPEG_PITCH);
 
 	return 0;
 }