diff options
| author | Stanley.Yang <Stanley.Yang@amd.com> | 2022-02-11 17:35:18 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-02-11 16:19:59 -0500 |
| commit | 1915a433954262ac7466469d1a4684ac54218af4 (patch) | |
| tree | fda96a60812fcd0c590fc1078ff333d8f1933b90 /drivers/gpu/drm/amd/amdgpu/umc_v6_7.c | |
| parent | f3986e86b2d861a2ed2d336bafe53b5c404cb995 (diff) | |
drm/amdgpu: adjust register address calculation
the UMC_STATUS register is not linear, adjust offset
calculation formula to get correct address
Signed-off-by: Stanley.Yang <Stanley.Yang@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/umc_v6_7.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/umc_v6_7.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/umc_v6_7.c b/drivers/gpu/drm/amd/amdgpu/umc_v6_7.c index e613511e07e1..87e4ef18e151 100644 --- a/drivers/gpu/drm/amd/amdgpu/umc_v6_7.c +++ b/drivers/gpu/drm/amd/amdgpu/umc_v6_7.c @@ -47,6 +47,13 @@ static inline uint32_t get_umc_v6_7_reg_offset(struct amdgpu_device *adev, uint32_t umc_inst, uint32_t ch_inst) { + uint32_t index = umc_inst * adev->umc.channel_inst_num + ch_inst; + + /* adjust umc and channel index offset, + * the register address is not linear on each umc instace */ + umc_inst = index / 4; + ch_inst = index % 4; + return adev->umc.channel_offs * ch_inst + UMC_V6_7_INST_DIST * umc_inst; } |