drm/amdgpu/gmc8: always load MC firmware in the driver

commit b52b6738cc2d50d2a8f4d0095bcb5a86716008a5 upstream.

Some power features rely on the driver loaded version so always
load the MC firmware from the driver even if the vbios loaded
a version already.

Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
index 9cf49215c2a044c22fdafaa48a8594e0ae30a6a2..1a744f964b301fd739704d7f20a52106d60d4ac7 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
@@ -365,7 +365,7 @@ static int gmc_v8_0_polaris_mc_load_microcode(struct amdgpu_device *adev)
        const struct mc_firmware_header_v1_0 *hdr;
        const __le32 *fw_data = NULL;
        const __le32 *io_mc_regs = NULL;
-       u32 data, vbios_version;
+       u32 data;
        int i, ucode_size, regs_size;
 
        /* Skip MC ucode loading on SR-IOV capable boards.
@@ -376,13 +376,6 @@ static int gmc_v8_0_polaris_mc_load_microcode(struct amdgpu_device *adev)
        if (amdgpu_sriov_bios(adev))
                return 0;
 
-       WREG32(mmMC_SEQ_IO_DEBUG_INDEX, 0x9F);
-       data = RREG32(mmMC_SEQ_IO_DEBUG_DATA);
-       vbios_version = data & 0xf;
-
-       if (vbios_version == 0)
-               return 0;
-
        if (!adev->gmc.fw)
                return -EINVAL;