drm/amdgpu: add read/write function for GC CAC programming

Create a GC_CAC_IND_INDEX/DATA pair of funcitons to program
all the CAC registers

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 29d0055fe50d..9c9f28c1ce84 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1488,9 +1488,12 @@ int amdgpu_device_init(struct amdgpu_device *adev,
         adev->uvd_ctx_wreg = &amdgpu_invalid_wreg;
         adev->didt_rreg = &amdgpu_invalid_rreg;
         adev->didt_wreg = &amdgpu_invalid_wreg;
+        adev->gc_cac_rreg = &amdgpu_invalid_rreg;
+        adev->gc_cac_wreg = &amdgpu_invalid_wreg;
         adev->audio_endpt_rreg = &amdgpu_block_invalid_rreg;
         adev->audio_endpt_wreg = &amdgpu_block_invalid_wreg;
 
+
         DRM_INFO("initializing kernel modesetting (%s 0x%04X:0x%04X 0x%04X:0x%04X 0x%02X).\n",
                  amdgpu_asic_name[adev->asic_type], pdev->vendor, pdev->device,
                  pdev->subsystem_vendor, pdev->subsystem_device, pdev->revision);
@@ -1515,6 +1518,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
         spin_lock_init(&adev->pcie_idx_lock);
         spin_lock_init(&adev->uvd_ctx_idx_lock);
         spin_lock_init(&adev->didt_idx_lock);
+        spin_lock_init(&adev->gc_cac_idx_lock);
         spin_lock_init(&adev->audio_endpt_idx_lock);
 
         adev->rmmio_base = pci_resource_start(adev->pdev, 5);