diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h
index 584136e579a3..043620dfdacb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h
@@ -25,11 +25,49 @@
 #define __AMDGPU_IH_H__
 
 struct amdgpu_device;
+ /*
+  * vega10+ IH clients
+ */
+enum amdgpu_ih_clientid
+{
+    AMDGPU_IH_CLIENTID_IH	    = 0x00,
+    AMDGPU_IH_CLIENTID_ACP	    = 0x01,
+    AMDGPU_IH_CLIENTID_ATHUB	    = 0x02,
+    AMDGPU_IH_CLIENTID_BIF	    = 0x03,
+    AMDGPU_IH_CLIENTID_DCE	    = 0x04,
+    AMDGPU_IH_CLIENTID_ISP	    = 0x05,
+    AMDGPU_IH_CLIENTID_PCIE0	    = 0x06,
+    AMDGPU_IH_CLIENTID_RLC	    = 0x07,
+    AMDGPU_IH_CLIENTID_SDMA0	    = 0x08,
+    AMDGPU_IH_CLIENTID_SDMA1	    = 0x09,
+    AMDGPU_IH_CLIENTID_SE0SH	    = 0x0a,
+    AMDGPU_IH_CLIENTID_SE1SH	    = 0x0b,
+    AMDGPU_IH_CLIENTID_SE2SH	    = 0x0c,
+    AMDGPU_IH_CLIENTID_SE3SH	    = 0x0d,
+    AMDGPU_IH_CLIENTID_SYSHUB	    = 0x0e,
+    AMDGPU_IH_CLIENTID_THM	    = 0x0f,
+    AMDGPU_IH_CLIENTID_UVD	    = 0x10,
+    AMDGPU_IH_CLIENTID_VCE0	    = 0x11,
+    AMDGPU_IH_CLIENTID_VMC	    = 0x12,
+    AMDGPU_IH_CLIENTID_XDMA	    = 0x13,
+    AMDGPU_IH_CLIENTID_GRBM_CP	    = 0x14,
+    AMDGPU_IH_CLIENTID_ATS	    = 0x15,
+    AMDGPU_IH_CLIENTID_ROM_SMUIO    = 0x16,
+    AMDGPU_IH_CLIENTID_DF	    = 0x17,
+    AMDGPU_IH_CLIENTID_VCE1	    = 0x18,
+    AMDGPU_IH_CLIENTID_PWR	    = 0x19,
+    AMDGPU_IH_CLIENTID_UTCL2	    = 0x1b,
+    AMDGPU_IH_CLIENTID_EA	    = 0x1c,
+    AMDGPU_IH_CLIENTID_UTCL2LOG	    = 0x1d,
+    AMDGPU_IH_CLIENTID_MP0	    = 0x1e,
+    AMDGPU_IH_CLIENTID_MP1	    = 0x1f,
+
+    AMDGPU_IH_CLIENTID_MAX
+
+};
 
 #define AMDGPU_IH_CLIENTID_LEGACY 0
 
-#define AMDGPU_IH_CLIENTID_MAX 0x1f
-
 /*
  * R6xx+ IH ring
  */