drm/amdgpu: add VCN to firmware query interface

Need to be able to query the VCN firmware version from
userspace to determine supported features, etc.

Reviewed-by: Huang Rui <ray.huang@amd.com>
Acked-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -190,6 +190,10 @@ static int amdgpu_firmware_info(struct drm_amdgpu_info_firmware *fw_info,
 		fw_info->ver = adev->uvd.fw_version;
 		fw_info->feature = 0;
 		break;
+	case AMDGPU_INFO_FW_VCN:
+		fw_info->ver = adev->vcn.fw_version;
+		fw_info->feature = 0;
+		break;
 	case AMDGPU_INFO_FW_GMC:
 		fw_info->ver = adev->gmc.fw_version;
 		fw_info->feature = 0;
@@ -1198,6 +1202,14 @@ static int amdgpu_debugfs_firmware_info(struct seq_file *m, void *data)
 			   i, fw_info.feature, fw_info.ver);
 	}
 
+	/* VCN */
+	query_fw.fw_type = AMDGPU_INFO_FW_VCN;
+	ret = amdgpu_firmware_info(&fw_info, &query_fw, adev);
+	if (ret)
+		return ret;
+	seq_printf(m, "VCN feature version: %u, firmware version: 0x%08x\n",
+		   fw_info.feature, fw_info.ver);
+
 	return 0;
 }
 

include/uapi/drm/amdgpu_drm.h

@@ -618,6 +618,8 @@ struct drm_amdgpu_cs_chunk_data {
 	#define AMDGPU_INFO_FW_SOS		0x0c
 	/* Subquery id: Query PSP ASD firmware version */
 	#define AMDGPU_INFO_FW_ASD		0x0d
+	/* Subquery id: Query VCN firmware version */
+	#define AMDGPU_INFO_FW_VCN		0x0e
 /* number of bytes moved for TTM migration */
 #define AMDGPU_INFO_NUM_BYTES_MOVED		0x0f
 /* the used VRAM size */