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    <div class="moz-cite-prefix">On 2025-01-31 11:56, Alex Deucher
      wrote:<br>
    </div>
    <blockquote type="cite" cite="mid:20250131165741.1798488-2-alexander.deucher@amd.com">
      <pre class="moz-quote-pre" wrap="">Split the code on a per instance basis.  This will allow
us to use the per instance functions in the future to
handle more things per instance.

Signed-off-by: Alex Deucher <a class="moz-txt-link-rfc2396E" href="mailto:alexander.deucher@amd.com"><alexander.deucher@amd.com></a></pre>
    </blockquote>
    <p><br>
    </p>
    <p><font size="2"><span style="font-size:11pt;"><span data-markjs="true" data-olk-copy-source="MessageBody"><span data-markjs="true" class="mark1tk8wrane" style="" data-ogac="" data-ogab="" data-ogsc="" data-ogsb="" data-olk-copy-source="MessageBody">Reviewed-by</span></span>:
          Boyuan Zhang <a href="mailto:Boyuan.Zhang@amd.com" title="mailto:Boyuan.Zhang@amd.com" data-linkindex="2"><Boyuan.Zhang@amd.com></a></span></font></p>
    <p></p>
    <p><br>
    </p>
    <blockquote type="cite" cite="mid:20250131165741.1798488-2-alexander.deucher@amd.com">
      <pre class="moz-quote-pre" wrap="">
---
 drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c | 841 +++++++++++++-------------
 1 file changed, 411 insertions(+), 430 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c b/drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c
index b518202955cad..b9be304aa294b 100644
--- a/drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c
+++ b/drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c
@@ -452,64 +452,62 @@ static int vcn_v2_5_resume(struct amdgpu_ip_block *ip_block)
  * vcn_v2_5_mc_resume - memory controller programming
  *
  * @adev: amdgpu_device pointer
+ * @i: instance to resume
  *
  * Let the VCN memory controller know it's offsets
  */
-static void vcn_v2_5_mc_resume(struct amdgpu_device *adev)
+static void vcn_v2_5_mc_resume(struct amdgpu_device *adev, int i)
 {
        uint32_t size;
        uint32_t offset;
-       int i;
-
-       for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
-               if (adev->vcn.harvest_config & (1 << i))
-                       continue;
 
-               size = AMDGPU_GPU_PAGE_ALIGN(adev->vcn.inst[i].fw->size + 4);
-               /* cache window 0: fw */
-               if (adev->firmware.load_type == AMDGPU_FW_LOAD_PSP) {
-                       WREG32_SOC15(VCN, i, mmUVD_LMI_VCPU_CACHE_64BIT_BAR_LOW,
-                               (adev->firmware.ucode[AMDGPU_UCODE_ID_VCN + i].tmr_mc_addr_lo));
-                       WREG32_SOC15(VCN, i, mmUVD_LMI_VCPU_CACHE_64BIT_BAR_HIGH,
-                               (adev->firmware.ucode[AMDGPU_UCODE_ID_VCN + i].tmr_mc_addr_hi));
-                       WREG32_SOC15(VCN, i, mmUVD_VCPU_CACHE_OFFSET0, 0);
-                       offset = 0;
-               } else {
-                       WREG32_SOC15(VCN, i, mmUVD_LMI_VCPU_CACHE_64BIT_BAR_LOW,
-                               lower_32_bits(adev->vcn.inst[i].gpu_addr));
-                       WREG32_SOC15(VCN, i, mmUVD_LMI_VCPU_CACHE_64BIT_BAR_HIGH,
-                               upper_32_bits(adev->vcn.inst[i].gpu_addr));
-                       offset = size;
-                       WREG32_SOC15(VCN, i, mmUVD_VCPU_CACHE_OFFSET0,
-                               AMDGPU_UVD_FIRMWARE_OFFSET >> 3);
-               }
-               WREG32_SOC15(VCN, i, mmUVD_VCPU_CACHE_SIZE0, size);
+       if (adev->vcn.harvest_config & (1 << i))
+               return;
 
-               /* cache window 1: stack */
-               WREG32_SOC15(VCN, i, mmUVD_LMI_VCPU_CACHE1_64BIT_BAR_LOW,
-                       lower_32_bits(adev->vcn.inst[i].gpu_addr + offset));
-               WREG32_SOC15(VCN, i, mmUVD_LMI_VCPU_CACHE1_64BIT_BAR_HIGH,
-                       upper_32_bits(adev->vcn.inst[i].gpu_addr + offset));
-               WREG32_SOC15(VCN, i, mmUVD_VCPU_CACHE_OFFSET1, 0);
-               WREG32_SOC15(VCN, i, mmUVD_VCPU_CACHE_SIZE1, AMDGPU_VCN_STACK_SIZE);
-
-               /* cache window 2: context */
-               WREG32_SOC15(VCN, i, mmUVD_LMI_VCPU_CACHE2_64BIT_BAR_LOW,
-                       lower_32_bits(adev->vcn.inst[i].gpu_addr + offset + AMDGPU_VCN_STACK_SIZE));
-               WREG32_SOC15(VCN, i, mmUVD_LMI_VCPU_CACHE2_64BIT_BAR_HIGH,
-                       upper_32_bits(adev->vcn.inst[i].gpu_addr + offset + AMDGPU_VCN_STACK_SIZE));
-               WREG32_SOC15(VCN, i, mmUVD_VCPU_CACHE_OFFSET2, 0);
-               WREG32_SOC15(VCN, i, mmUVD_VCPU_CACHE_SIZE2, AMDGPU_VCN_CONTEXT_SIZE);
-
-               /* non-cache window */
-               WREG32_SOC15(VCN, i, mmUVD_LMI_VCPU_NC0_64BIT_BAR_LOW,
-                       lower_32_bits(adev->vcn.inst[i].fw_shared.gpu_addr));
-               WREG32_SOC15(VCN, i, mmUVD_LMI_VCPU_NC0_64BIT_BAR_HIGH,
-                       upper_32_bits(adev->vcn.inst[i].fw_shared.gpu_addr));
-               WREG32_SOC15(VCN, i, mmUVD_VCPU_NONCACHE_OFFSET0, 0);
-               WREG32_SOC15(VCN, i, mmUVD_VCPU_NONCACHE_SIZE0,
-                       AMDGPU_GPU_PAGE_ALIGN(sizeof(struct amdgpu_fw_shared)));
+       size = AMDGPU_GPU_PAGE_ALIGN(adev->vcn.inst[i].fw->size + 4);
+       /* cache window 0: fw */
+       if (adev->firmware.load_type == AMDGPU_FW_LOAD_PSP) {
+               WREG32_SOC15(VCN, i, mmUVD_LMI_VCPU_CACHE_64BIT_BAR_LOW,
+                            (adev->firmware.ucode[AMDGPU_UCODE_ID_VCN + i].tmr_mc_addr_lo));
+               WREG32_SOC15(VCN, i, mmUVD_LMI_VCPU_CACHE_64BIT_BAR_HIGH,
+                            (adev->firmware.ucode[AMDGPU_UCODE_ID_VCN + i].tmr_mc_addr_hi));
+               WREG32_SOC15(VCN, i, mmUVD_VCPU_CACHE_OFFSET0, 0);
+               offset = 0;
+       } else {
+               WREG32_SOC15(VCN, i, mmUVD_LMI_VCPU_CACHE_64BIT_BAR_LOW,
+                            lower_32_bits(adev->vcn.inst[i].gpu_addr));
+               WREG32_SOC15(VCN, i, mmUVD_LMI_VCPU_CACHE_64BIT_BAR_HIGH,
+                            upper_32_bits(adev->vcn.inst[i].gpu_addr));
+               offset = size;
+               WREG32_SOC15(VCN, i, mmUVD_VCPU_CACHE_OFFSET0,
+                            AMDGPU_UVD_FIRMWARE_OFFSET >> 3);
        }
+       WREG32_SOC15(VCN, i, mmUVD_VCPU_CACHE_SIZE0, size);
+
+       /* cache window 1: stack */
+       WREG32_SOC15(VCN, i, mmUVD_LMI_VCPU_CACHE1_64BIT_BAR_LOW,
+                    lower_32_bits(adev->vcn.inst[i].gpu_addr + offset));
+       WREG32_SOC15(VCN, i, mmUVD_LMI_VCPU_CACHE1_64BIT_BAR_HIGH,
+                    upper_32_bits(adev->vcn.inst[i].gpu_addr + offset));
+       WREG32_SOC15(VCN, i, mmUVD_VCPU_CACHE_OFFSET1, 0);
+       WREG32_SOC15(VCN, i, mmUVD_VCPU_CACHE_SIZE1, AMDGPU_VCN_STACK_SIZE);
+
+       /* cache window 2: context */
+       WREG32_SOC15(VCN, i, mmUVD_LMI_VCPU_CACHE2_64BIT_BAR_LOW,
+                    lower_32_bits(adev->vcn.inst[i].gpu_addr + offset + AMDGPU_VCN_STACK_SIZE));
+       WREG32_SOC15(VCN, i, mmUVD_LMI_VCPU_CACHE2_64BIT_BAR_HIGH,
+                    upper_32_bits(adev->vcn.inst[i].gpu_addr + offset + AMDGPU_VCN_STACK_SIZE));
+       WREG32_SOC15(VCN, i, mmUVD_VCPU_CACHE_OFFSET2, 0);
+       WREG32_SOC15(VCN, i, mmUVD_VCPU_CACHE_SIZE2, AMDGPU_VCN_CONTEXT_SIZE);
+
+       /* non-cache window */
+       WREG32_SOC15(VCN, i, mmUVD_LMI_VCPU_NC0_64BIT_BAR_LOW,
+                    lower_32_bits(adev->vcn.inst[i].fw_shared.gpu_addr));
+       WREG32_SOC15(VCN, i, mmUVD_LMI_VCPU_NC0_64BIT_BAR_HIGH,
+                    upper_32_bits(adev->vcn.inst[i].fw_shared.gpu_addr));
+       WREG32_SOC15(VCN, i, mmUVD_VCPU_NONCACHE_OFFSET0, 0);
+       WREG32_SOC15(VCN, i, mmUVD_VCPU_NONCACHE_SIZE0,
+                    AMDGPU_GPU_PAGE_ALIGN(sizeof(struct amdgpu_fw_shared)));
 }
 
 static void vcn_v2_5_mc_resume_dpg_mode(struct amdgpu_device *adev, int inst_idx, bool indirect)
@@ -612,117 +610,115 @@ static void vcn_v2_5_mc_resume_dpg_mode(struct amdgpu_device *adev, int inst_idx
  * vcn_v2_5_disable_clock_gating - disable VCN clock gating
  *
  * @adev: amdgpu_device pointer
+ * @i: instance to disable clockgating on
  *
  * Disable clock gating for VCN block
  */
-static void vcn_v2_5_disable_clock_gating(struct amdgpu_device *adev)
+static void vcn_v2_5_disable_clock_gating(struct amdgpu_device *adev, int i)
 {
        uint32_t data;
-       int i;
 
-       for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
-               if (adev->vcn.harvest_config & (1 << i))
-                       continue;
-               /* UVD disable CGC */
-               data = RREG32_SOC15(VCN, i, mmUVD_CGC_CTRL);
-               if (adev->cg_flags & AMD_CG_SUPPORT_VCN_MGCG)
-                       data |= 1 << UVD_CGC_CTRL__DYN_CLOCK_MODE__SHIFT;
-               else
-                       data &= ~UVD_CGC_CTRL__DYN_CLOCK_MODE_MASK;
-               data |= 1 << UVD_CGC_CTRL__CLK_GATE_DLY_TIMER__SHIFT;
-               data |= 4 << UVD_CGC_CTRL__CLK_OFF_DELAY__SHIFT;
-               WREG32_SOC15(VCN, i, mmUVD_CGC_CTRL, data);
-
-               data = RREG32_SOC15(VCN, i, mmUVD_CGC_GATE);
-               data &= ~(UVD_CGC_GATE__SYS_MASK
-                       | UVD_CGC_GATE__UDEC_MASK
-                       | UVD_CGC_GATE__MPEG2_MASK
-                       | UVD_CGC_GATE__REGS_MASK
-                       | UVD_CGC_GATE__RBC_MASK
-                       | UVD_CGC_GATE__LMI_MC_MASK
-                       | UVD_CGC_GATE__LMI_UMC_MASK
-                       | UVD_CGC_GATE__IDCT_MASK
-                       | UVD_CGC_GATE__MPRD_MASK
-                       | UVD_CGC_GATE__MPC_MASK
-                       | UVD_CGC_GATE__LBSI_MASK
-                       | UVD_CGC_GATE__LRBBM_MASK
-                       | UVD_CGC_GATE__UDEC_RE_MASK
-                       | UVD_CGC_GATE__UDEC_CM_MASK
-                       | UVD_CGC_GATE__UDEC_IT_MASK
-                       | UVD_CGC_GATE__UDEC_DB_MASK
-                       | UVD_CGC_GATE__UDEC_MP_MASK
-                       | UVD_CGC_GATE__WCB_MASK
-                       | UVD_CGC_GATE__VCPU_MASK
-                       | UVD_CGC_GATE__MMSCH_MASK);
-
-               WREG32_SOC15(VCN, i, mmUVD_CGC_GATE, data);
-
-               SOC15_WAIT_ON_RREG(VCN, i, mmUVD_CGC_GATE, 0,  0xFFFFFFFF);
-
-               data = RREG32_SOC15(VCN, i, mmUVD_CGC_CTRL);
-               data &= ~(UVD_CGC_CTRL__UDEC_RE_MODE_MASK
-                       | UVD_CGC_CTRL__UDEC_CM_MODE_MASK
-                       | UVD_CGC_CTRL__UDEC_IT_MODE_MASK
-                       | UVD_CGC_CTRL__UDEC_DB_MODE_MASK
-                       | UVD_CGC_CTRL__UDEC_MP_MODE_MASK
-                       | UVD_CGC_CTRL__SYS_MODE_MASK
-                       | UVD_CGC_CTRL__UDEC_MODE_MASK
-                       | UVD_CGC_CTRL__MPEG2_MODE_MASK
-                       | UVD_CGC_CTRL__REGS_MODE_MASK
-                       | UVD_CGC_CTRL__RBC_MODE_MASK
-                       | UVD_CGC_CTRL__LMI_MC_MODE_MASK
-                       | UVD_CGC_CTRL__LMI_UMC_MODE_MASK
-                       | UVD_CGC_CTRL__IDCT_MODE_MASK
-                       | UVD_CGC_CTRL__MPRD_MODE_MASK
-                       | UVD_CGC_CTRL__MPC_MODE_MASK
-                       | UVD_CGC_CTRL__LBSI_MODE_MASK
-                       | UVD_CGC_CTRL__LRBBM_MODE_MASK
-                       | UVD_CGC_CTRL__WCB_MODE_MASK
-                       | UVD_CGC_CTRL__VCPU_MODE_MASK
-                       | UVD_CGC_CTRL__MMSCH_MODE_MASK);
-               WREG32_SOC15(VCN, i, mmUVD_CGC_CTRL, data);
-
-               /* turn on */
-               data = RREG32_SOC15(VCN, i, mmUVD_SUVD_CGC_GATE);
-               data |= (UVD_SUVD_CGC_GATE__SRE_MASK
-                       | UVD_SUVD_CGC_GATE__SIT_MASK
-                       | UVD_SUVD_CGC_GATE__SMP_MASK
-                       | UVD_SUVD_CGC_GATE__SCM_MASK
-                       | UVD_SUVD_CGC_GATE__SDB_MASK
-                       | UVD_SUVD_CGC_GATE__SRE_H264_MASK
-                       | UVD_SUVD_CGC_GATE__SRE_HEVC_MASK
-                       | UVD_SUVD_CGC_GATE__SIT_H264_MASK
-                       | UVD_SUVD_CGC_GATE__SIT_HEVC_MASK
-                       | UVD_SUVD_CGC_GATE__SCM_H264_MASK
-                       | UVD_SUVD_CGC_GATE__SCM_HEVC_MASK
-                       | UVD_SUVD_CGC_GATE__SDB_H264_MASK
-                       | UVD_SUVD_CGC_GATE__SDB_HEVC_MASK
-                       | UVD_SUVD_CGC_GATE__SCLR_MASK
-                       | UVD_SUVD_CGC_GATE__UVD_SC_MASK
-                       | UVD_SUVD_CGC_GATE__ENT_MASK
-                       | UVD_SUVD_CGC_GATE__SIT_HEVC_DEC_MASK
-                       | UVD_SUVD_CGC_GATE__SIT_HEVC_ENC_MASK
-                       | UVD_SUVD_CGC_GATE__SITE_MASK
-                       | UVD_SUVD_CGC_GATE__SRE_VP9_MASK
-                       | UVD_SUVD_CGC_GATE__SCM_VP9_MASK
-                       | UVD_SUVD_CGC_GATE__SIT_VP9_DEC_MASK
-                       | UVD_SUVD_CGC_GATE__SDB_VP9_MASK
-                       | UVD_SUVD_CGC_GATE__IME_HEVC_MASK);
-               WREG32_SOC15(VCN, i, mmUVD_SUVD_CGC_GATE, data);
-
-               data = RREG32_SOC15(VCN, i, mmUVD_SUVD_CGC_CTRL);
-               data &= ~(UVD_SUVD_CGC_CTRL__SRE_MODE_MASK
-                       | UVD_SUVD_CGC_CTRL__SIT_MODE_MASK
-                       | UVD_SUVD_CGC_CTRL__SMP_MODE_MASK
-                       | UVD_SUVD_CGC_CTRL__SCM_MODE_MASK
-                       | UVD_SUVD_CGC_CTRL__SDB_MODE_MASK
-                       | UVD_SUVD_CGC_CTRL__SCLR_MODE_MASK
-                       | UVD_SUVD_CGC_CTRL__UVD_SC_MODE_MASK
-                       | UVD_SUVD_CGC_CTRL__ENT_MODE_MASK
+       if (adev->vcn.harvest_config & (1 << i))
+               return;
+       /* UVD disable CGC */
+       data = RREG32_SOC15(VCN, i, mmUVD_CGC_CTRL);
+       if (adev->cg_flags & AMD_CG_SUPPORT_VCN_MGCG)
+               data |= 1 << UVD_CGC_CTRL__DYN_CLOCK_MODE__SHIFT;
+       else
+               data &= ~UVD_CGC_CTRL__DYN_CLOCK_MODE_MASK;
+       data |= 1 << UVD_CGC_CTRL__CLK_GATE_DLY_TIMER__SHIFT;
+       data |= 4 << UVD_CGC_CTRL__CLK_OFF_DELAY__SHIFT;
+       WREG32_SOC15(VCN, i, mmUVD_CGC_CTRL, data);
+
+       data = RREG32_SOC15(VCN, i, mmUVD_CGC_GATE);
+       data &= ~(UVD_CGC_GATE__SYS_MASK
+                 | UVD_CGC_GATE__UDEC_MASK
+                 | UVD_CGC_GATE__MPEG2_MASK
+                 | UVD_CGC_GATE__REGS_MASK
+                 | UVD_CGC_GATE__RBC_MASK
+                 | UVD_CGC_GATE__LMI_MC_MASK
+                 | UVD_CGC_GATE__LMI_UMC_MASK
+                 | UVD_CGC_GATE__IDCT_MASK
+                 | UVD_CGC_GATE__MPRD_MASK
+                 | UVD_CGC_GATE__MPC_MASK
+                 | UVD_CGC_GATE__LBSI_MASK
+                 | UVD_CGC_GATE__LRBBM_MASK
+                 | UVD_CGC_GATE__UDEC_RE_MASK
+                 | UVD_CGC_GATE__UDEC_CM_MASK
+                 | UVD_CGC_GATE__UDEC_IT_MASK
+                 | UVD_CGC_GATE__UDEC_DB_MASK
+                 | UVD_CGC_GATE__UDEC_MP_MASK
+                 | UVD_CGC_GATE__WCB_MASK
+                 | UVD_CGC_GATE__VCPU_MASK
+                 | UVD_CGC_GATE__MMSCH_MASK);
+
+       WREG32_SOC15(VCN, i, mmUVD_CGC_GATE, data);
+
+       SOC15_WAIT_ON_RREG(VCN, i, mmUVD_CGC_GATE, 0,  0xFFFFFFFF);
+
+       data = RREG32_SOC15(VCN, i, mmUVD_CGC_CTRL);
+       data &= ~(UVD_CGC_CTRL__UDEC_RE_MODE_MASK
+                 | UVD_CGC_CTRL__UDEC_CM_MODE_MASK
+                 | UVD_CGC_CTRL__UDEC_IT_MODE_MASK
+                 | UVD_CGC_CTRL__UDEC_DB_MODE_MASK
+                 | UVD_CGC_CTRL__UDEC_MP_MODE_MASK
+                 | UVD_CGC_CTRL__SYS_MODE_MASK
+                 | UVD_CGC_CTRL__UDEC_MODE_MASK
+                 | UVD_CGC_CTRL__MPEG2_MODE_MASK
+                 | UVD_CGC_CTRL__REGS_MODE_MASK
+                 | UVD_CGC_CTRL__RBC_MODE_MASK
+                 | UVD_CGC_CTRL__LMI_MC_MODE_MASK
+                 | UVD_CGC_CTRL__LMI_UMC_MODE_MASK
+                 | UVD_CGC_CTRL__IDCT_MODE_MASK
+                 | UVD_CGC_CTRL__MPRD_MODE_MASK
+                 | UVD_CGC_CTRL__MPC_MODE_MASK
+                 | UVD_CGC_CTRL__LBSI_MODE_MASK
+                 | UVD_CGC_CTRL__LRBBM_MODE_MASK
+                 | UVD_CGC_CTRL__WCB_MODE_MASK
+                 | UVD_CGC_CTRL__VCPU_MODE_MASK
+                 | UVD_CGC_CTRL__MMSCH_MODE_MASK);
+       WREG32_SOC15(VCN, i, mmUVD_CGC_CTRL, data);
+
+       /* turn on */
+       data = RREG32_SOC15(VCN, i, mmUVD_SUVD_CGC_GATE);
+       data |= (UVD_SUVD_CGC_GATE__SRE_MASK
+                | UVD_SUVD_CGC_GATE__SIT_MASK
+                | UVD_SUVD_CGC_GATE__SMP_MASK
+                | UVD_SUVD_CGC_GATE__SCM_MASK
+                | UVD_SUVD_CGC_GATE__SDB_MASK
+                | UVD_SUVD_CGC_GATE__SRE_H264_MASK
+                | UVD_SUVD_CGC_GATE__SRE_HEVC_MASK
+                | UVD_SUVD_CGC_GATE__SIT_H264_MASK
+                | UVD_SUVD_CGC_GATE__SIT_HEVC_MASK
+                | UVD_SUVD_CGC_GATE__SCM_H264_MASK
+                | UVD_SUVD_CGC_GATE__SCM_HEVC_MASK
+                | UVD_SUVD_CGC_GATE__SDB_H264_MASK
+                | UVD_SUVD_CGC_GATE__SDB_HEVC_MASK
+                | UVD_SUVD_CGC_GATE__SCLR_MASK
+                | UVD_SUVD_CGC_GATE__UVD_SC_MASK
+                | UVD_SUVD_CGC_GATE__ENT_MASK
+                | UVD_SUVD_CGC_GATE__SIT_HEVC_DEC_MASK
+                | UVD_SUVD_CGC_GATE__SIT_HEVC_ENC_MASK
+                | UVD_SUVD_CGC_GATE__SITE_MASK
+                | UVD_SUVD_CGC_GATE__SRE_VP9_MASK
+                | UVD_SUVD_CGC_GATE__SCM_VP9_MASK
+                | UVD_SUVD_CGC_GATE__SIT_VP9_DEC_MASK
+                | UVD_SUVD_CGC_GATE__SDB_VP9_MASK
+                | UVD_SUVD_CGC_GATE__IME_HEVC_MASK);
+       WREG32_SOC15(VCN, i, mmUVD_SUVD_CGC_GATE, data);
+
+       data = RREG32_SOC15(VCN, i, mmUVD_SUVD_CGC_CTRL);
+       data &= ~(UVD_SUVD_CGC_CTRL__SRE_MODE_MASK
+                 | UVD_SUVD_CGC_CTRL__SIT_MODE_MASK
+                 | UVD_SUVD_CGC_CTRL__SMP_MODE_MASK
+                 | UVD_SUVD_CGC_CTRL__SCM_MODE_MASK
+                 | UVD_SUVD_CGC_CTRL__SDB_MODE_MASK
+                 | UVD_SUVD_CGC_CTRL__SCLR_MODE_MASK
+                 | UVD_SUVD_CGC_CTRL__UVD_SC_MODE_MASK
+                 | UVD_SUVD_CGC_CTRL__ENT_MODE_MASK
                        | UVD_SUVD_CGC_CTRL__IME_MODE_MASK
-                       | UVD_SUVD_CGC_CTRL__SITE_MODE_MASK);
-               WREG32_SOC15(VCN, i, mmUVD_SUVD_CGC_CTRL, data);
-       }
+                 | UVD_SUVD_CGC_CTRL__SITE_MODE_MASK);
+       WREG32_SOC15(VCN, i, mmUVD_SUVD_CGC_CTRL, data);
 }
 
 static void vcn_v2_5_clock_gating_dpg_mode(struct amdgpu_device *adev,
@@ -774,65 +770,63 @@ static void vcn_v2_5_clock_gating_dpg_mode(struct amdgpu_device *adev,
 }
 
 /**
- * vcn_v2_5_enable_clock_gating - enable VCN clock gating
+ * vcn_v2_5_enable_clock_gating_inst - enable VCN clock gating
  *
  * @adev: amdgpu_device pointer
+ * @i: instance to enable clockgating on
  *
  * Enable clock gating for VCN block
  */
-static void vcn_v2_5_enable_clock_gating(struct amdgpu_device *adev)
+static void vcn_v2_5_enable_clock_gating(struct amdgpu_device *adev, int i)
 {
        uint32_t data = 0;
-       int i;
 
-       for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
-               if (adev->vcn.harvest_config & (1 << i))
-                       continue;
-               /* enable UVD CGC */
-               data = RREG32_SOC15(VCN, i, mmUVD_CGC_CTRL);
-               if (adev->cg_flags & AMD_CG_SUPPORT_VCN_MGCG)
-                       data |= 1 << UVD_CGC_CTRL__DYN_CLOCK_MODE__SHIFT;
-               else
-                       data |= 0 << UVD_CGC_CTRL__DYN_CLOCK_MODE__SHIFT;
-               data |= 1 << UVD_CGC_CTRL__CLK_GATE_DLY_TIMER__SHIFT;
-               data |= 4 << UVD_CGC_CTRL__CLK_OFF_DELAY__SHIFT;
-               WREG32_SOC15(VCN, i, mmUVD_CGC_CTRL, data);
-
-               data = RREG32_SOC15(VCN, i, mmUVD_CGC_CTRL);
-               data |= (UVD_CGC_CTRL__UDEC_RE_MODE_MASK
-                       | UVD_CGC_CTRL__UDEC_CM_MODE_MASK
-                       | UVD_CGC_CTRL__UDEC_IT_MODE_MASK
-                       | UVD_CGC_CTRL__UDEC_DB_MODE_MASK
-                       | UVD_CGC_CTRL__UDEC_MP_MODE_MASK
-                       | UVD_CGC_CTRL__SYS_MODE_MASK
-                       | UVD_CGC_CTRL__UDEC_MODE_MASK
-                       | UVD_CGC_CTRL__MPEG2_MODE_MASK
-                       | UVD_CGC_CTRL__REGS_MODE_MASK
-                       | UVD_CGC_CTRL__RBC_MODE_MASK
-                       | UVD_CGC_CTRL__LMI_MC_MODE_MASK
-                       | UVD_CGC_CTRL__LMI_UMC_MODE_MASK
-                       | UVD_CGC_CTRL__IDCT_MODE_MASK
-                       | UVD_CGC_CTRL__MPRD_MODE_MASK
-                       | UVD_CGC_CTRL__MPC_MODE_MASK
-                       | UVD_CGC_CTRL__LBSI_MODE_MASK
-                       | UVD_CGC_CTRL__LRBBM_MODE_MASK
-                       | UVD_CGC_CTRL__WCB_MODE_MASK
-                       | UVD_CGC_CTRL__VCPU_MODE_MASK);
-               WREG32_SOC15(VCN, i, mmUVD_CGC_CTRL, data);
-
-               data = RREG32_SOC15(VCN, i, mmUVD_SUVD_CGC_CTRL);
-               data |= (UVD_SUVD_CGC_CTRL__SRE_MODE_MASK
-                       | UVD_SUVD_CGC_CTRL__SIT_MODE_MASK
-                       | UVD_SUVD_CGC_CTRL__SMP_MODE_MASK
-                       | UVD_SUVD_CGC_CTRL__SCM_MODE_MASK
-                       | UVD_SUVD_CGC_CTRL__SDB_MODE_MASK
-                       | UVD_SUVD_CGC_CTRL__SCLR_MODE_MASK
-                       | UVD_SUVD_CGC_CTRL__UVD_SC_MODE_MASK
-                       | UVD_SUVD_CGC_CTRL__ENT_MODE_MASK
-                       | UVD_SUVD_CGC_CTRL__IME_MODE_MASK
-                       | UVD_SUVD_CGC_CTRL__SITE_MODE_MASK);
-               WREG32_SOC15(VCN, i, mmUVD_SUVD_CGC_CTRL, data);
-       }
+       if (adev->vcn.harvest_config & (1 << i))
+               return;
+       /* enable UVD CGC */
+       data = RREG32_SOC15(VCN, i, mmUVD_CGC_CTRL);
+       if (adev->cg_flags & AMD_CG_SUPPORT_VCN_MGCG)
+               data |= 1 << UVD_CGC_CTRL__DYN_CLOCK_MODE__SHIFT;
+       else
+               data |= 0 << UVD_CGC_CTRL__DYN_CLOCK_MODE__SHIFT;
+       data |= 1 << UVD_CGC_CTRL__CLK_GATE_DLY_TIMER__SHIFT;
+       data |= 4 << UVD_CGC_CTRL__CLK_OFF_DELAY__SHIFT;
+       WREG32_SOC15(VCN, i, mmUVD_CGC_CTRL, data);
+
+       data = RREG32_SOC15(VCN, i, mmUVD_CGC_CTRL);
+       data |= (UVD_CGC_CTRL__UDEC_RE_MODE_MASK
+                | UVD_CGC_CTRL__UDEC_CM_MODE_MASK
+                | UVD_CGC_CTRL__UDEC_IT_MODE_MASK
+                | UVD_CGC_CTRL__UDEC_DB_MODE_MASK
+                | UVD_CGC_CTRL__UDEC_MP_MODE_MASK
+                | UVD_CGC_CTRL__SYS_MODE_MASK
+                | UVD_CGC_CTRL__UDEC_MODE_MASK
+                | UVD_CGC_CTRL__MPEG2_MODE_MASK
+                | UVD_CGC_CTRL__REGS_MODE_MASK
+                | UVD_CGC_CTRL__RBC_MODE_MASK
+                | UVD_CGC_CTRL__LMI_MC_MODE_MASK
+                | UVD_CGC_CTRL__LMI_UMC_MODE_MASK
+                | UVD_CGC_CTRL__IDCT_MODE_MASK
+                | UVD_CGC_CTRL__MPRD_MODE_MASK
+                | UVD_CGC_CTRL__MPC_MODE_MASK
+                | UVD_CGC_CTRL__LBSI_MODE_MASK
+                | UVD_CGC_CTRL__LRBBM_MODE_MASK
+                | UVD_CGC_CTRL__WCB_MODE_MASK
+                | UVD_CGC_CTRL__VCPU_MODE_MASK);
+       WREG32_SOC15(VCN, i, mmUVD_CGC_CTRL, data);
+
+       data = RREG32_SOC15(VCN, i, mmUVD_SUVD_CGC_CTRL);
+       data |= (UVD_SUVD_CGC_CTRL__SRE_MODE_MASK
+                | UVD_SUVD_CGC_CTRL__SIT_MODE_MASK
+                | UVD_SUVD_CGC_CTRL__SMP_MODE_MASK
+                | UVD_SUVD_CGC_CTRL__SCM_MODE_MASK
+                | UVD_SUVD_CGC_CTRL__SDB_MODE_MASK
+                | UVD_SUVD_CGC_CTRL__SCLR_MODE_MASK
+                | UVD_SUVD_CGC_CTRL__UVD_SC_MODE_MASK
+                | UVD_SUVD_CGC_CTRL__ENT_MODE_MASK
+                | UVD_SUVD_CGC_CTRL__IME_MODE_MASK
+                | UVD_SUVD_CGC_CTRL__SITE_MODE_MASK);
+       WREG32_SOC15(VCN, i, mmUVD_SUVD_CGC_CTRL, data);
 }
 
 static void vcn_v2_6_enable_ras(struct amdgpu_device *adev, int inst_idx,
@@ -1006,197 +1000,185 @@ static int vcn_v2_5_start_dpg_mode(struct amdgpu_device *adev, int inst_idx, boo
        return 0;
 }
 
-static int vcn_v2_5_start(struct amdgpu_device *adev)
+static int vcn_v2_5_start(struct amdgpu_device *adev, int i)
 {
+       volatile struct amdgpu_fw_shared *fw_shared =
+               adev->vcn.inst[i].fw_shared.cpu_addr;
        struct amdgpu_ring *ring;
        uint32_t rb_bufsz, tmp;
-       int i, j, k, r;
+       int j, k, r;
 
-       for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
-               if (adev->pm.dpm_enabled)
-                       amdgpu_dpm_enable_vcn(adev, true, i);
-       }
+       if (adev->vcn.harvest_config & (1 << i))
+               return 0;
 
-       for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
-               if (adev->vcn.harvest_config & (1 << i))
-                       continue;
-               if (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG) {
-                       r = vcn_v2_5_start_dpg_mode(adev, i, adev->vcn.indirect_sram);
-                       continue;
-               }
+       if (adev->pm.dpm_enabled)
+               amdgpu_dpm_enable_vcn(adev, true, i);
 
-               /* disable register anti-hang mechanism */
-               WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_POWER_STATUS), 0,
-                       ~UVD_POWER_STATUS__UVD_POWER_STATUS_MASK);
+       if (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG)
+               return vcn_v2_5_start_dpg_mode(adev, i, adev->vcn.indirect_sram);
 
-               /* set uvd status busy */
-               tmp = RREG32_SOC15(VCN, i, mmUVD_STATUS) | UVD_STATUS__UVD_BUSY;
-               WREG32_SOC15(VCN, i, mmUVD_STATUS, tmp);
-       }
+       /* disable register anti-hang mechanism */
+       WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_POWER_STATUS), 0,
+                ~UVD_POWER_STATUS__UVD_POWER_STATUS_MASK);
+
+       /* set uvd status busy */
+       tmp = RREG32_SOC15(VCN, i, mmUVD_STATUS) | UVD_STATUS__UVD_BUSY;
+       WREG32_SOC15(VCN, i, mmUVD_STATUS, tmp);
 
        if (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG)
                return 0;
 
-       /*SW clock gating */
-       vcn_v2_5_disable_clock_gating(adev);
+       /* SW clock gating */
+       vcn_v2_5_disable_clock_gating(adev, i);
 
-       for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
-               if (adev->vcn.harvest_config & (1 << i))
-                       continue;
-               /* enable VCPU clock */
-               WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_VCPU_CNTL),
-                       UVD_VCPU_CNTL__CLK_EN_MASK, ~UVD_VCPU_CNTL__CLK_EN_MASK);
-
-               /* disable master interrupt */
-               WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_MASTINT_EN), 0,
-                       ~UVD_MASTINT_EN__VCPU_EN_MASK);
-
-               /* setup mmUVD_LMI_CTRL */
-               tmp = RREG32_SOC15(VCN, i, mmUVD_LMI_CTRL);
-               tmp &= ~0xff;
-               WREG32_SOC15(VCN, i, mmUVD_LMI_CTRL, tmp | 0x8|
-                       UVD_LMI_CTRL__WRITE_CLEAN_TIMER_EN_MASK |
-                       UVD_LMI_CTRL__MASK_MC_URGENT_MASK |
-                       UVD_LMI_CTRL__DATA_COHERENCY_EN_MASK |
-                       UVD_LMI_CTRL__VCPU_DATA_COHERENCY_EN_MASK);
-
-               /* setup mmUVD_MPC_CNTL */
-               tmp = RREG32_SOC15(VCN, i, mmUVD_MPC_CNTL);
-               tmp &= ~UVD_MPC_CNTL__REPLACEMENT_MODE_MASK;
-               tmp |= 0x2 << UVD_MPC_CNTL__REPLACEMENT_MODE__SHIFT;
-               WREG32_SOC15(VCN, i, mmUVD_MPC_CNTL, tmp);
-
-               /* setup UVD_MPC_SET_MUXA0 */
-               WREG32_SOC15(VCN, i, mmUVD_MPC_SET_MUXA0,
-                       ((0x1 << UVD_MPC_SET_MUXA0__VARA_1__SHIFT) |
-                       (0x2 << UVD_MPC_SET_MUXA0__VARA_2__SHIFT) |
-                       (0x3 << UVD_MPC_SET_MUXA0__VARA_3__SHIFT) |
-                       (0x4 << UVD_MPC_SET_MUXA0__VARA_4__SHIFT)));
-
-               /* setup UVD_MPC_SET_MUXB0 */
-               WREG32_SOC15(VCN, i, mmUVD_MPC_SET_MUXB0,
-                       ((0x1 << UVD_MPC_SET_MUXB0__VARB_1__SHIFT) |
-                       (0x2 << UVD_MPC_SET_MUXB0__VARB_2__SHIFT) |
-                       (0x3 << UVD_MPC_SET_MUXB0__VARB_3__SHIFT) |
-                       (0x4 << UVD_MPC_SET_MUXB0__VARB_4__SHIFT)));
-
-               /* setup mmUVD_MPC_SET_MUX */
-               WREG32_SOC15(VCN, i, mmUVD_MPC_SET_MUX,
-                       ((0x0 << UVD_MPC_SET_MUX__SET_0__SHIFT) |
-                       (0x1 << UVD_MPC_SET_MUX__SET_1__SHIFT) |
-                       (0x2 << UVD_MPC_SET_MUX__SET_2__SHIFT)));
-       }
+       /* enable VCPU clock */
+       WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_VCPU_CNTL),
+                UVD_VCPU_CNTL__CLK_EN_MASK, ~UVD_VCPU_CNTL__CLK_EN_MASK);
 
-       vcn_v2_5_mc_resume(adev);
+       /* disable master interrupt */
+       WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_MASTINT_EN), 0,
+                ~UVD_MASTINT_EN__VCPU_EN_MASK);
 
-       for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
-               volatile struct amdgpu_fw_shared *fw_shared = adev->vcn.inst[i].fw_shared.cpu_addr;
-               if (adev->vcn.harvest_config & (1 << i))
-                       continue;
-               /* VCN global tiling registers */
-               WREG32_SOC15(VCN, i, mmUVD_GFX8_ADDR_CONFIG,
-                       adev->gfx.config.gb_addr_config);
-               WREG32_SOC15(VCN, i, mmUVD_GFX8_ADDR_CONFIG,
-                       adev->gfx.config.gb_addr_config);
+       /* setup mmUVD_LMI_CTRL */
+       tmp = RREG32_SOC15(VCN, i, mmUVD_LMI_CTRL);
+       tmp &= ~0xff;
+       WREG32_SOC15(VCN, i, mmUVD_LMI_CTRL, tmp | 0x8|
+                    UVD_LMI_CTRL__WRITE_CLEAN_TIMER_EN_MASK    |
+                    UVD_LMI_CTRL__MASK_MC_URGENT_MASK |
+                    UVD_LMI_CTRL__DATA_COHERENCY_EN_MASK |
+                    UVD_LMI_CTRL__VCPU_DATA_COHERENCY_EN_MASK);
+
+       /* setup mmUVD_MPC_CNTL */
+       tmp = RREG32_SOC15(VCN, i, mmUVD_MPC_CNTL);
+       tmp &= ~UVD_MPC_CNTL__REPLACEMENT_MODE_MASK;
+       tmp |= 0x2 << UVD_MPC_CNTL__REPLACEMENT_MODE__SHIFT;
+       WREG32_SOC15(VCN, i, mmUVD_MPC_CNTL, tmp);
+
+       /* setup UVD_MPC_SET_MUXA0 */
+       WREG32_SOC15(VCN, i, mmUVD_MPC_SET_MUXA0,
+                    ((0x1 << UVD_MPC_SET_MUXA0__VARA_1__SHIFT) |
+                     (0x2 << UVD_MPC_SET_MUXA0__VARA_2__SHIFT) |
+                     (0x3 << UVD_MPC_SET_MUXA0__VARA_3__SHIFT) |
+                     (0x4 << UVD_MPC_SET_MUXA0__VARA_4__SHIFT)));
+
+       /* setup UVD_MPC_SET_MUXB0 */
+       WREG32_SOC15(VCN, i, mmUVD_MPC_SET_MUXB0,
+                    ((0x1 << UVD_MPC_SET_MUXB0__VARB_1__SHIFT) |
+                     (0x2 << UVD_MPC_SET_MUXB0__VARB_2__SHIFT) |
+                     (0x3 << UVD_MPC_SET_MUXB0__VARB_3__SHIFT) |
+                     (0x4 << UVD_MPC_SET_MUXB0__VARB_4__SHIFT)));
+
+       /* setup mmUVD_MPC_SET_MUX */
+       WREG32_SOC15(VCN, i, mmUVD_MPC_SET_MUX,
+                    ((0x0 << UVD_MPC_SET_MUX__SET_0__SHIFT) |
+                     (0x1 << UVD_MPC_SET_MUX__SET_1__SHIFT) |
+                     (0x2 << UVD_MPC_SET_MUX__SET_2__SHIFT)));
+
+       vcn_v2_5_mc_resume(adev, i);
 
-               /* enable LMI MC and UMC channels */
-               WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_LMI_CTRL2), 0,
-                       ~UVD_LMI_CTRL2__STALL_ARB_UMC_MASK);
+       /* VCN global tiling registers */
+       WREG32_SOC15(VCN, i, mmUVD_GFX8_ADDR_CONFIG,
+                    adev->gfx.config.gb_addr_config);
+       WREG32_SOC15(VCN, i, mmUVD_GFX8_ADDR_CONFIG,
+                    adev->gfx.config.gb_addr_config);
 
-               /* unblock VCPU register access */
-               WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_RB_ARB_CTRL), 0,
-                       ~UVD_RB_ARB_CTRL__VCPU_DIS_MASK);
+       /* enable LMI MC and UMC channels */
+       WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_LMI_CTRL2), 0,
+                ~UVD_LMI_CTRL2__STALL_ARB_UMC_MASK);
 
-               WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_VCPU_CNTL), 0,
-                       ~UVD_VCPU_CNTL__BLK_RST_MASK);
-
-               for (k = 0; k < 10; ++k) {
-                       uint32_t status;
-
-                       for (j = 0; j < 100; ++j) {
-                               status = RREG32_SOC15(VCN, i, mmUVD_STATUS);
-                               if (status & 2)
-                                       break;
-                               if (amdgpu_emu_mode == 1)
-                                       msleep(500);
-                               else
-                                       mdelay(10);
-                       }
-                       r = 0;
+       /* unblock VCPU register access */
+       WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_RB_ARB_CTRL), 0,
+                ~UVD_RB_ARB_CTRL__VCPU_DIS_MASK);
+
+       WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_VCPU_CNTL), 0,
+                ~UVD_VCPU_CNTL__BLK_RST_MASK);
+
+       for (k = 0; k < 10; ++k) {
+               uint32_t status;
+
+               for (j = 0; j < 100; ++j) {
+                       status = RREG32_SOC15(VCN, i, mmUVD_STATUS);
                        if (status & 2)
                                break;
+                       if (amdgpu_emu_mode == 1)
+                               msleep(500);
+                       else
+                               mdelay(10);
+               }
+               r = 0;
+               if (status & 2)
+                       break;
 
-                       DRM_ERROR("VCN decode not responding, trying to reset the VCPU!!!\n");
-                       WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_VCPU_CNTL),
-                               UVD_VCPU_CNTL__BLK_RST_MASK,
-                               ~UVD_VCPU_CNTL__BLK_RST_MASK);
-                       mdelay(10);
-                       WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_VCPU_CNTL), 0,
-                               ~UVD_VCPU_CNTL__BLK_RST_MASK);
+               DRM_ERROR("VCN decode not responding, trying to reset the VCPU!!!\n");
+               WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_VCPU_CNTL),
+                        UVD_VCPU_CNTL__BLK_RST_MASK,
+                        ~UVD_VCPU_CNTL__BLK_RST_MASK);
+               mdelay(10);
+               WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_VCPU_CNTL), 0,
+                        ~UVD_VCPU_CNTL__BLK_RST_MASK);
 
-                       mdelay(10);
-                       r = -1;
-               }
+               mdelay(10);
+               r = -1;
+       }
 
-               if (r) {
-                       DRM_ERROR("VCN decode not responding, giving up!!!\n");
-                       return r;
-               }
+       if (r) {
+               DRM_ERROR("VCN decode not responding, giving up!!!\n");
+               return r;
+       }
 
-               /* enable master interrupt */
-               WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_MASTINT_EN),
-                       UVD_MASTINT_EN__VCPU_EN_MASK,
-                       ~UVD_MASTINT_EN__VCPU_EN_MASK);
+       /* enable master interrupt */
+       WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_MASTINT_EN),
+                UVD_MASTINT_EN__VCPU_EN_MASK,
+                ~UVD_MASTINT_EN__VCPU_EN_MASK);
 
-               /* clear the busy bit of VCN_STATUS */
-               WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_STATUS), 0,
-                       ~(2 << UVD_STATUS__VCPU_REPORT__SHIFT));
+       /* clear the busy bit of VCN_STATUS */
+       WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_STATUS), 0,
+                ~(2 << UVD_STATUS__VCPU_REPORT__SHIFT));
 
-               WREG32_SOC15(VCN, i, mmUVD_LMI_RBC_RB_VMID, 0);
+       WREG32_SOC15(VCN, i, mmUVD_LMI_RBC_RB_VMID, 0);
 
-               ring = &adev->vcn.inst[i].ring_dec;
-               /* force RBC into idle state */
-               rb_bufsz = order_base_2(ring->ring_size);
-               tmp = REG_SET_FIELD(0, UVD_RBC_RB_CNTL, RB_BUFSZ, rb_bufsz);
-               tmp = REG_SET_FIELD(tmp, UVD_RBC_RB_CNTL, RB_BLKSZ, 1);
-               tmp = REG_SET_FIELD(tmp, UVD_RBC_RB_CNTL, RB_NO_FETCH, 1);
-               tmp = REG_SET_FIELD(tmp, UVD_RBC_RB_CNTL, RB_NO_UPDATE, 1);
-               tmp = REG_SET_FIELD(tmp, UVD_RBC_RB_CNTL, RB_RPTR_WR_EN, 1);
-               WREG32_SOC15(VCN, i, mmUVD_RBC_RB_CNTL, tmp);
+       ring = &adev->vcn.inst[i].ring_dec;
+       /* force RBC into idle state */
+       rb_bufsz = order_base_2(ring->ring_size);
+       tmp = REG_SET_FIELD(0, UVD_RBC_RB_CNTL, RB_BUFSZ, rb_bufsz);
+       tmp = REG_SET_FIELD(tmp, UVD_RBC_RB_CNTL, RB_BLKSZ, 1);
+       tmp = REG_SET_FIELD(tmp, UVD_RBC_RB_CNTL, RB_NO_FETCH, 1);
+       tmp = REG_SET_FIELD(tmp, UVD_RBC_RB_CNTL, RB_NO_UPDATE, 1);
+       tmp = REG_SET_FIELD(tmp, UVD_RBC_RB_CNTL, RB_RPTR_WR_EN, 1);
+       WREG32_SOC15(VCN, i, mmUVD_RBC_RB_CNTL, tmp);
 
-               fw_shared->multi_queue.decode_queue_mode |= FW_QUEUE_RING_RESET;
-               /* program the RB_BASE for ring buffer */
-               WREG32_SOC15(VCN, i, mmUVD_LMI_RBC_RB_64BIT_BAR_LOW,
-                       lower_32_bits(ring->gpu_addr));
-               WREG32_SOC15(VCN, i, mmUVD_LMI_RBC_RB_64BIT_BAR_HIGH,
-                       upper_32_bits(ring->gpu_addr));
+       fw_shared->multi_queue.decode_queue_mode |= FW_QUEUE_RING_RESET;
+       /* program the RB_BASE for ring buffer */
+       WREG32_SOC15(VCN, i, mmUVD_LMI_RBC_RB_64BIT_BAR_LOW,
+                    lower_32_bits(ring->gpu_addr));
+       WREG32_SOC15(VCN, i, mmUVD_LMI_RBC_RB_64BIT_BAR_HIGH,
+                    upper_32_bits(ring->gpu_addr));
 
-               /* Initialize the ring buffer's read and write pointers */
-               WREG32_SOC15(VCN, i, mmUVD_RBC_RB_RPTR, 0);
+       /* Initialize the ring buffer's read and write pointers */
+       WREG32_SOC15(VCN, i, mmUVD_RBC_RB_RPTR, 0);
 
-               ring->wptr = RREG32_SOC15(VCN, i, mmUVD_RBC_RB_RPTR);
-               WREG32_SOC15(VCN, i, mmUVD_RBC_RB_WPTR,
-                               lower_32_bits(ring->wptr));
-               fw_shared->multi_queue.decode_queue_mode &= ~FW_QUEUE_RING_RESET;
+       ring->wptr = RREG32_SOC15(VCN, i, mmUVD_RBC_RB_RPTR);
+       WREG32_SOC15(VCN, i, mmUVD_RBC_RB_WPTR,
+                    lower_32_bits(ring->wptr));
+       fw_shared->multi_queue.decode_queue_mode &= ~FW_QUEUE_RING_RESET;
 
-               fw_shared->multi_queue.encode_generalpurpose_queue_mode |= FW_QUEUE_RING_RESET;
-               ring = &adev->vcn.inst[i].ring_enc[0];
-               WREG32_SOC15(VCN, i, mmUVD_RB_RPTR, lower_32_bits(ring->wptr));
-               WREG32_SOC15(VCN, i, mmUVD_RB_WPTR, lower_32_bits(ring->wptr));
-               WREG32_SOC15(VCN, i, mmUVD_RB_BASE_LO, ring->gpu_addr);
-               WREG32_SOC15(VCN, i, mmUVD_RB_BASE_HI, upper_32_bits(ring->gpu_addr));
-               WREG32_SOC15(VCN, i, mmUVD_RB_SIZE, ring->ring_size / 4);
-               fw_shared->multi_queue.encode_generalpurpose_queue_mode &= ~FW_QUEUE_RING_RESET;
-
-               fw_shared->multi_queue.encode_lowlatency_queue_mode |= FW_QUEUE_RING_RESET;
-               ring = &adev->vcn.inst[i].ring_enc[1];
-               WREG32_SOC15(VCN, i, mmUVD_RB_RPTR2, lower_32_bits(ring->wptr));
-               WREG32_SOC15(VCN, i, mmUVD_RB_WPTR2, lower_32_bits(ring->wptr));
-               WREG32_SOC15(VCN, i, mmUVD_RB_BASE_LO2, ring->gpu_addr);
-               WREG32_SOC15(VCN, i, mmUVD_RB_BASE_HI2, upper_32_bits(ring->gpu_addr));
-               WREG32_SOC15(VCN, i, mmUVD_RB_SIZE2, ring->ring_size / 4);
-               fw_shared->multi_queue.encode_lowlatency_queue_mode &= ~FW_QUEUE_RING_RESET;
-       }
+       fw_shared->multi_queue.encode_generalpurpose_queue_mode |= FW_QUEUE_RING_RESET;
+       ring = &adev->vcn.inst[i].ring_enc[0];
+       WREG32_SOC15(VCN, i, mmUVD_RB_RPTR, lower_32_bits(ring->wptr));
+       WREG32_SOC15(VCN, i, mmUVD_RB_WPTR, lower_32_bits(ring->wptr));
+       WREG32_SOC15(VCN, i, mmUVD_RB_BASE_LO, ring->gpu_addr);
+       WREG32_SOC15(VCN, i, mmUVD_RB_BASE_HI, upper_32_bits(ring->gpu_addr));
+       WREG32_SOC15(VCN, i, mmUVD_RB_SIZE, ring->ring_size / 4);
+       fw_shared->multi_queue.encode_generalpurpose_queue_mode &= ~FW_QUEUE_RING_RESET;
+
+       fw_shared->multi_queue.encode_lowlatency_queue_mode |= FW_QUEUE_RING_RESET;
+       ring = &adev->vcn.inst[i].ring_enc[1];
+       WREG32_SOC15(VCN, i, mmUVD_RB_RPTR2, lower_32_bits(ring->wptr));
+       WREG32_SOC15(VCN, i, mmUVD_RB_WPTR2, lower_32_bits(ring->wptr));
+       WREG32_SOC15(VCN, i, mmUVD_RB_BASE_LO2, ring->gpu_addr);
+       WREG32_SOC15(VCN, i, mmUVD_RB_BASE_HI2, upper_32_bits(ring->gpu_addr));
+       WREG32_SOC15(VCN, i, mmUVD_RB_SIZE2, ring->ring_size / 4);
+       fw_shared->multi_queue.encode_lowlatency_queue_mode &= ~FW_QUEUE_RING_RESET;
 
        return 0;
 }
@@ -1425,72 +1407,66 @@ static int vcn_v2_5_stop_dpg_mode(struct amdgpu_device *adev, int inst_idx)
        return 0;
 }
 
-static int vcn_v2_5_stop(struct amdgpu_device *adev)
+static int vcn_v2_5_stop(struct amdgpu_device *adev, int i)
 {
        uint32_t tmp;
-       int i, r = 0;
+       int r;
 
-       for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
-               if (adev->vcn.harvest_config & (1 << i))
-                       continue;
-               if (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG) {
-                       r = vcn_v2_5_stop_dpg_mode(adev, i);
-                       continue;
-               }
+       if (adev->vcn.harvest_config & (1 << i))
+               return 0;
+       if (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG)
+               return vcn_v2_5_stop_dpg_mode(adev, i);
 
-               /* wait for vcn idle */
-               r = SOC15_WAIT_ON_RREG(VCN, i, mmUVD_STATUS, UVD_STATUS__IDLE, 0x7);
-               if (r)
-                       return r;
+       /* wait for vcn idle */
+       r = SOC15_WAIT_ON_RREG(VCN, i, mmUVD_STATUS, UVD_STATUS__IDLE, 0x7);
+       if (r)
+               return r;
 
-               tmp = UVD_LMI_STATUS__VCPU_LMI_WRITE_CLEAN_MASK |
-                       UVD_LMI_STATUS__READ_CLEAN_MASK |
-                       UVD_LMI_STATUS__WRITE_CLEAN_MASK |
-                       UVD_LMI_STATUS__WRITE_CLEAN_RAW_MASK;
-               r = SOC15_WAIT_ON_RREG(VCN, i, mmUVD_LMI_STATUS, tmp, tmp);
-               if (r)
-                       return r;
+       tmp = UVD_LMI_STATUS__VCPU_LMI_WRITE_CLEAN_MASK |
+               UVD_LMI_STATUS__READ_CLEAN_MASK |
+               UVD_LMI_STATUS__WRITE_CLEAN_MASK |
+               UVD_LMI_STATUS__WRITE_CLEAN_RAW_MASK;
+       r = SOC15_WAIT_ON_RREG(VCN, i, mmUVD_LMI_STATUS, tmp, tmp);
+       if (r)
+               return r;
 
-               /* block LMI UMC channel */
-               tmp = RREG32_SOC15(VCN, i, mmUVD_LMI_CTRL2);
-               tmp |= UVD_LMI_CTRL2__STALL_ARB_UMC_MASK;
-               WREG32_SOC15(VCN, i, mmUVD_LMI_CTRL2, tmp);
+       /* block LMI UMC channel */
+       tmp = RREG32_SOC15(VCN, i, mmUVD_LMI_CTRL2);
+       tmp |= UVD_LMI_CTRL2__STALL_ARB_UMC_MASK;
+       WREG32_SOC15(VCN, i, mmUVD_LMI_CTRL2, tmp);
 
-               tmp = UVD_LMI_STATUS__UMC_READ_CLEAN_RAW_MASK|
-                       UVD_LMI_STATUS__UMC_WRITE_CLEAN_RAW_MASK;
-               r = SOC15_WAIT_ON_RREG(VCN, i, mmUVD_LMI_STATUS, tmp, tmp);
-               if (r)
-                       return r;
+       tmp = UVD_LMI_STATUS__UMC_READ_CLEAN_RAW_MASK|
+               UVD_LMI_STATUS__UMC_WRITE_CLEAN_RAW_MASK;
+       r = SOC15_WAIT_ON_RREG(VCN, i, mmUVD_LMI_STATUS, tmp, tmp);
+       if (r)
+               return r;
 
-               /* block VCPU register access */
-               WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_RB_ARB_CTRL),
-                       UVD_RB_ARB_CTRL__VCPU_DIS_MASK,
-                       ~UVD_RB_ARB_CTRL__VCPU_DIS_MASK);
+       /* block VCPU register access */
+       WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_RB_ARB_CTRL),
+                UVD_RB_ARB_CTRL__VCPU_DIS_MASK,
+                ~UVD_RB_ARB_CTRL__VCPU_DIS_MASK);
 
-               /* reset VCPU */
-               WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_VCPU_CNTL),
-                       UVD_VCPU_CNTL__BLK_RST_MASK,
-                       ~UVD_VCPU_CNTL__BLK_RST_MASK);
+       /* reset VCPU */
+       WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_VCPU_CNTL),
+                UVD_VCPU_CNTL__BLK_RST_MASK,
+                ~UVD_VCPU_CNTL__BLK_RST_MASK);
 
-               /* disable VCPU clock */
-               WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_VCPU_CNTL), 0,
-                       ~(UVD_VCPU_CNTL__CLK_EN_MASK));
+       /* disable VCPU clock */
+       WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_VCPU_CNTL), 0,
+                ~(UVD_VCPU_CNTL__CLK_EN_MASK));
 
-               /* clear status */
-               WREG32_SOC15(VCN, i, mmUVD_STATUS, 0);
+       /* clear status */
+       WREG32_SOC15(VCN, i, mmUVD_STATUS, 0);
 
-               vcn_v2_5_enable_clock_gating(adev);
+       vcn_v2_5_enable_clock_gating(adev, i);
 
-               /* enable register anti-hang mechanism */
-               WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_POWER_STATUS),
-                       UVD_POWER_STATUS__UVD_POWER_STATUS_MASK,
-                       ~UVD_POWER_STATUS__UVD_POWER_STATUS_MASK);
-       }
+       /* enable register anti-hang mechanism */
+       WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_POWER_STATUS),
+                UVD_POWER_STATUS__UVD_POWER_STATUS_MASK,
+                ~UVD_POWER_STATUS__UVD_POWER_STATUS_MASK);
 
-       for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
-               if (adev->pm.dpm_enabled)
-                       amdgpu_dpm_enable_vcn(adev, false, i);
-       }
+       if (adev->pm.dpm_enabled)
+               amdgpu_dpm_enable_vcn(adev, false, i);
 
        return 0;
 }
@@ -1811,16 +1787,19 @@ static int vcn_v2_5_set_clockgating_state(struct amdgpu_ip_block *ip_block,
 {
        struct amdgpu_device *adev = ip_block->adev;
        bool enable = (state == AMD_CG_STATE_GATE);
+       int i;
 
        if (amdgpu_sriov_vf(adev))
                return 0;
 
-       if (enable) {
-               if (!vcn_v2_5_is_idle(adev))
-                       return -EBUSY;
-               vcn_v2_5_enable_clock_gating(adev);
-       } else {
-               vcn_v2_5_disable_clock_gating(adev);
+       for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
+               if (enable) {
+                       if (!vcn_v2_5_is_idle(adev))
+                               return -EBUSY;
+                       vcn_v2_5_enable_clock_gating(adev, i);
+               } else {
+                       vcn_v2_5_disable_clock_gating(adev, i);
+               }
        }
 
        return 0;
@@ -1830,20 +1809,22 @@ static int vcn_v2_5_set_powergating_state(struct amdgpu_ip_block *ip_block,
                                          enum amd_powergating_state state)
 {
        struct amdgpu_device *adev = ip_block->adev;
-       int ret;
+       int ret = 0, i;
 
        if (amdgpu_sriov_vf(adev))
                return 0;
 
-       if(state == adev->vcn.cur_state)
+       if (state == adev->vcn.cur_state)
                return 0;
 
-       if (state == AMD_PG_STATE_GATE)
-               ret = vcn_v2_5_stop(adev);
-       else
-               ret = vcn_v2_5_start(adev);
+       for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
+               if (state == AMD_PG_STATE_GATE)
+                       ret |= vcn_v2_5_stop(adev, i);
+               else
+                       ret |= vcn_v2_5_start(adev, i);
+       }
 
-       if(!ret)
+       if (!ret)
                adev->vcn.cur_state = state;
 
        return ret;
</pre>
    </blockquote>
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