[PATCH 254/459] amd/powerplay: update the vcn pg

[Alex Deucher]

From: Kenneth Feng <kenneth.f...@amd.com>

update the vcn pg function in navi10.

Signed-off-by: Kenneth Feng <kenneth.f...@amd.com>
Reviewed-by: Evan Quan <evan.q...@amd.com>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
---
 drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h |  6 ++++++
 drivers/gpu/drm/amd/powerplay/navi10_ppt.c     | 14 ++++++++++----
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h 
b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
index b62d272380d5..a4812c05c09c 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
@@ -439,9 +439,15 @@ struct smu_dpm_context {
        struct mclock_latency_table *mclk_latency_table;
 };
 
+struct smu_power_gate {
+       bool uvd_gated;
+       bool vce_gated;
+};
+
 struct smu_power_context {
        void *power_context;
        uint32_t power_context_size;
+       struct smu_power_gate power_gate;
 };
 
 
diff --git a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c 
b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
index 186c5726580a..cea5704e3f4f 100644
--- a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
+++ b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
@@ -521,15 +521,21 @@ static int navi10_set_default_dpm_table(struct 
smu_context *smu)
 static int navi10_dpm_set_uvd_enable(struct smu_context *smu, bool enable)
 {
        int ret = 0;
+       struct smu_power_context *smu_power = &smu->smu_power;
+       struct smu_power_gate *power_gate = &smu_power->power_gate;
 
-       if (enable) {
+       if (enable && power_gate->uvd_gated) {
                ret = smu_send_smc_msg_with_param(smu, SMU_MSG_PowerUpVcn, 1);
                if (ret)
                        return ret;
+               power_gate->uvd_gated = false;
        } else {
-               ret = smu_send_smc_msg(smu, SMU_MSG_PowerDownVcn);
-               if (ret)
-                       return ret;
+               if (!enable && !power_gate->uvd_gated) {
+                       ret = smu_send_smc_msg(smu, SMU_MSG_PowerDownVcn);
+                       if (ret)
+                               return ret;
+                       power_gate->uvd_gated = true;
+               }
        }
 
        return 0;
-- 
2.20.1

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