drm/amdgpu: Remove the direct fw loading support for sdma2.4

sdma2.4 is only for iceland. For Vi, we don't maintain the
direct fw loading.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c

@@ -504,41 +504,6 @@ static int sdma_v2_4_rlc_resume(struct amdgpu_device *adev)
 	return 0;
 }
 
-/**
- * sdma_v2_4_load_microcode - load the sDMA ME ucode
- *
- * @adev: amdgpu_device pointer
- *
- * Loads the sDMA0/1 ucode.
- * Returns 0 for success, -EINVAL if the ucode is not available.
- */
-static int sdma_v2_4_load_microcode(struct amdgpu_device *adev)
-{
-	const struct sdma_firmware_header_v1_0 *hdr;
-	const __le32 *fw_data;
-	u32 fw_size;
-	int i, j;
-
-	/* halt the MEs */
-	sdma_v2_4_enable(adev, false);
-
-	for (i = 0; i < adev->sdma.num_instances; i++) {
-		if (!adev->sdma.instance[i].fw)
-			return -EINVAL;
-		hdr = (const struct sdma_firmware_header_v1_0 *)adev->sdma.instance[i].fw->data;
-		amdgpu_ucode_print_sdma_hdr(&hdr->header);
-		fw_size = le32_to_cpu(hdr->header.ucode_size_bytes) / 4;
-		fw_data = (const __le32 *)
-			(adev->sdma.instance[i].fw->data +
-			 le32_to_cpu(hdr->header.ucode_array_offset_bytes));
-		WREG32(mmSDMA0_UCODE_ADDR + sdma_offsets[i], 0);
-		for (j = 0; j < fw_size; j++)
-			WREG32(mmSDMA0_UCODE_DATA + sdma_offsets[i], le32_to_cpup(fw_data++));
-		WREG32(mmSDMA0_UCODE_ADDR + sdma_offsets[i], adev->sdma.instance[i].fw_version);
-	}
-
-	return 0;
-}
 
 /**
  * sdma_v2_4_start - setup and start the async dma engines
@@ -552,13 +517,6 @@ static int sdma_v2_4_start(struct amdgpu_device *adev)
 {
 	int r;
 
-
-	if (adev->firmware.load_type == AMDGPU_FW_LOAD_DIRECT) {
-		r = sdma_v2_4_load_microcode(adev);
-		if (r)
-			return r;
-	}
-
 	/* halt the engine before programing */
 	sdma_v2_4_enable(adev, false);