drm/radeon/dpm: add thermal dpm support for CI

Not currently used.

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

3 files changed, 31 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/ci_dpm.c b/drivers/gpu/drm/radeon/ci_dpm.c
index 4581d6cf90e8..83121403ce3b 100644
--- a/drivers/gpu/drm/radeon/ci_dpm.c
+++ b/drivers/gpu/drm/radeon/ci_dpm.c
@@ -714,6 +714,25 @@ static int ci_enable_smc_cac(struct radeon_device *rdev, bool enable)
         return ret;
 }
 
+static int ci_enable_thermal_based_sclk_dpm(struct radeon_device *rdev,
+                                            bool enable)
+{
+        struct ci_power_info *pi = ci_get_pi(rdev);
+        PPSMC_Result smc_result = PPSMC_Result_OK;
+
+        if (pi->thermal_sclk_dpm_enabled) {
+                if (enable)
+                        smc_result = ci_send_msg_to_smc(rdev, PPSMC_MSG_ENABLE_THERMAL_DPM);
+                else
+                        smc_result = ci_send_msg_to_smc(rdev, PPSMC_MSG_DISABLE_THERMAL_DPM);
+        }
+
+        if (smc_result == PPSMC_Result_OK)
+                return 0;
+        else
+                return -EINVAL;
+}
+
 static int ci_power_control_set_level(struct radeon_device *rdev)
 {
         struct ci_power_info *pi = ci_get_pi(rdev);
@@ -5177,6 +5196,12 @@ int ci_dpm_enable(struct radeon_device *rdev)
 
         ci_enable_auto_throttle_source(rdev, RADEON_DPM_AUTO_THROTTLE_SRC_THERMAL, true);
 
+        ret = ci_enable_thermal_based_sclk_dpm(rdev, true);
+        if (ret) {
+                DRM_ERROR("ci_enable_thermal_based_sclk_dpm failed\n");
+                return ret;
+        }
+
         ci_thermal_start_thermal_controller(rdev);
 
         ci_update_current_ps(rdev, boot_ps);
@@ -5240,6 +5265,7 @@ void ci_dpm_disable(struct radeon_device *rdev)
         ci_reset_to_default(rdev);
         ci_dpm_stop_smc(rdev);
         ci_force_switch_to_arb_f0(rdev);
+        ci_enable_thermal_based_sclk_dpm(rdev, false);
 
         ci_update_current_ps(rdev, boot_ps);
 }
@@ -5639,6 +5665,7 @@ int ci_dpm_init(struct radeon_device *rdev)
         pi->sclk_dpm_key_disabled = 0;
         pi->mclk_dpm_key_disabled = 0;
         pi->pcie_dpm_key_disabled = 0;
+        pi->thermal_sclk_dpm_enabled = 0;
 
         /* mclk dpm is unstable on some R7 260X cards with the old mc ucode */
         if ((rdev->pdev->device == 0x6658) &&
diff --git a/drivers/gpu/drm/radeon/ci_dpm.h b/drivers/gpu/drm/radeon/ci_dpm.h
index bb19fbf3ab8a..84e3d3bcf9f3 100644
--- a/drivers/gpu/drm/radeon/ci_dpm.h
+++ b/drivers/gpu/drm/radeon/ci_dpm.h
@@ -239,6 +239,7 @@ struct ci_power_info {
         u32 sclk_dpm_key_disabled;
         u32 mclk_dpm_key_disabled;
         u32 pcie_dpm_key_disabled;
+        u32 thermal_sclk_dpm_enabled;
         struct ci_pcie_perf_range pcie_gen_performance;
         struct ci_pcie_perf_range pcie_lane_performance;
         struct ci_pcie_perf_range pcie_gen_powersaving;
diff --git a/drivers/gpu/drm/radeon/ppsmc.h b/drivers/gpu/drm/radeon/ppsmc.h
index ff698b05bdf5..7e5724a12f8b 100644
--- a/drivers/gpu/drm/radeon/ppsmc.h
+++ b/drivers/gpu/drm/radeon/ppsmc.h
@@ -162,6 +162,9 @@ typedef uint8_t PPSMC_Result;
 #define PPSMC_MSG_Remove_DC_Clamp             ((uint16_t) 0x191)
 #define PPSMC_MSG_SetFanPwmMax                ((uint16_t) 0x19A)
 
+#define PPSMC_MSG_ENABLE_THERMAL_DPM          ((uint16_t) 0x19C)
+#define PPSMC_MSG_DISABLE_THERMAL_DPM         ((uint16_t) 0x19D)
+
 #define PPSMC_MSG_API_GetSclkFrequency        ((uint16_t) 0x200)
 #define PPSMC_MSG_API_GetMclkFrequency        ((uint16_t) 0x201)