drm/amdgpu: drop the bios scratch reg callbacks from nbio

They are not used any longer.  We get the scratch register
locations from the vbios directly now.
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu.h

@@ -1451,9 +1451,6 @@ struct amdgpu_nbio_funcs {
 	u32 (*get_pcie_index_offset)(struct amdgpu_device *adev);
 	u32 (*get_pcie_data_offset)(struct amdgpu_device *adev);
 	u32 (*get_rev_id)(struct amdgpu_device *adev);
-	u32 (*get_atombios_scratch_regs)(struct amdgpu_device *adev, uint32_t idx);
-	void (*set_atombios_scratch_regs)(struct amdgpu_device *adev,
-					  uint32_t idx, uint32_t val);
 	void (*mc_access_enable)(struct amdgpu_device *adev, bool enable);
 	void (*hdp_flush)(struct amdgpu_device *adev);
 	u32 (*get_memsize)(struct amdgpu_device *adev);

drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c

@@ -43,18 +43,6 @@ static u32 nbio_v6_1_get_rev_id(struct amdgpu_device *adev)
 	return tmp;
 }
 
-static u32 nbio_v6_1_get_atombios_scratch_regs(struct amdgpu_device *adev,
-					       uint32_t idx)
-{
-	return RREG32_SOC15_OFFSET(NBIO, 0, mmBIOS_SCRATCH_0, idx);
-}
-
-static void nbio_v6_1_set_atombios_scratch_regs(struct amdgpu_device *adev,
-						uint32_t idx, uint32_t val)
-{
-	WREG32_SOC15_OFFSET(NBIO, 0, mmBIOS_SCRATCH_0, idx, val);
-}
-
 static void nbio_v6_1_mc_access_enable(struct amdgpu_device *adev, bool enable)
 {
 	if (enable)
@@ -284,8 +272,6 @@ const struct amdgpu_nbio_funcs nbio_v6_1_funcs = {
 	.get_pcie_index_offset = nbio_v6_1_get_pcie_index_offset,
 	.get_pcie_data_offset = nbio_v6_1_get_pcie_data_offset,
 	.get_rev_id = nbio_v6_1_get_rev_id,
-	.get_atombios_scratch_regs = nbio_v6_1_get_atombios_scratch_regs,
-	.set_atombios_scratch_regs = nbio_v6_1_set_atombios_scratch_regs,
 	.mc_access_enable = nbio_v6_1_mc_access_enable,
 	.hdp_flush = nbio_v6_1_hdp_flush,
 	.get_memsize = nbio_v6_1_get_memsize,

drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c

@@ -44,18 +44,6 @@ static u32 nbio_v7_0_get_rev_id(struct amdgpu_device *adev)
 	return tmp;
 }
 
-static u32 nbio_v7_0_get_atombios_scratch_regs(struct amdgpu_device *adev,
-					uint32_t idx)
-{
-	return RREG32_SOC15_OFFSET(NBIO, 0, mmBIOS_SCRATCH_0, idx);
-}
-
-static void nbio_v7_0_set_atombios_scratch_regs(struct amdgpu_device *adev,
-						uint32_t idx, uint32_t val)
-{
-	WREG32_SOC15_OFFSET(NBIO, 0, mmBIOS_SCRATCH_0, idx, val);
-}
-
 static void nbio_v7_0_mc_access_enable(struct amdgpu_device *adev, bool enable)
 {
 	if (enable)
@@ -279,8 +267,6 @@ const struct amdgpu_nbio_funcs nbio_v7_0_funcs = {
 	.get_pcie_index_offset = nbio_v7_0_get_pcie_index_offset,
 	.get_pcie_data_offset = nbio_v7_0_get_pcie_data_offset,
 	.get_rev_id = nbio_v7_0_get_rev_id,
-	.get_atombios_scratch_regs = nbio_v7_0_get_atombios_scratch_regs,
-	.set_atombios_scratch_regs = nbio_v7_0_set_atombios_scratch_regs,
 	.mc_access_enable = nbio_v7_0_mc_access_enable,
 	.hdp_flush = nbio_v7_0_hdp_flush,
 	.get_memsize = nbio_v7_0_get_memsize,