[PATCH v3 2/6] drm/amd/pm: Add smu interface for temp metrics

[Asad Kamal]

Add smu interface to get baseboard/gpuboard temperature metrics

v2: Rename is_support to is_supported(Lijo)

Signed-off-by: Asad Kamal <asad.ka...@amd.com>
---
 drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c     | 29 +++++++++++++++++++
 drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h | 27 +++++++++++++++++
 2 files changed, 56 insertions(+)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c 
b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index b47cb4a5f488..8b015107f761 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
@@ -3831,6 +3831,33 @@ int smu_set_pm_policy(struct smu_context *smu, enum 
pp_pm_policy p_type,
        return ret;
 }
 
+static ssize_t smu_sys_get_temp_metrics(void *handle, enum 
smu_temp_metric_type type, void *table)
+{
+       struct smu_context *smu = handle;
+
+       if (!smu->pm_enabled || !smu->adev->pm.dpm_enabled)
+               return -EOPNOTSUPP;
+
+       if (!smu->smu_temp.temp_funcs || 
!smu->smu_temp.temp_funcs->get_temp_metrics)
+               return -EOPNOTSUPP;
+
+       return smu->smu_temp.temp_funcs->get_temp_metrics(smu, type, table);
+}
+
+static bool smu_temp_metrics_is_supported(void *handle, enum 
smu_temp_metric_type type)
+{
+       struct smu_context *smu = handle;
+       bool ret = false;
+
+       if (!smu->pm_enabled)
+               return false;
+
+       if (smu->smu_temp.temp_funcs && 
smu->smu_temp.temp_funcs->temp_metrics_is_supported)
+               ret = smu->smu_temp.temp_funcs->temp_metrics_is_supported(smu, 
type);
+
+       return ret;
+}
+
 static ssize_t smu_sys_get_xcp_metrics(void *handle, int xcp_id, void *table)
 {
        struct smu_context *smu = handle;
@@ -3903,6 +3930,8 @@ static const struct amd_pm_funcs swsmu_pm_funcs = {
        .get_dpm_clock_table              = smu_get_dpm_clock_table,
        .get_smu_prv_buf_details = smu_get_prv_buffer_details,
        .get_xcp_metrics                  = smu_sys_get_xcp_metrics,
+       .get_temp_metrics             = smu_sys_get_temp_metrics,
+       .temp_metrics_is_supported      = smu_temp_metrics_is_supported,
 };
 
 int smu_wait_for_event(struct smu_context *smu, enum smu_event_type event,
diff --git a/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h 
b/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h
index b52e194397e2..b490c39e313e 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h
@@ -396,6 +396,10 @@ struct smu_dpm_context {
        struct smu_dpm_policy_ctxt *dpm_policies;
 };
 
+struct smu_temp_context {
+       const struct smu_temp_funcs      *temp_funcs;
+};
+
 struct smu_power_gate {
        bool uvd_gated;
        bool vce_gated;
@@ -529,6 +533,7 @@ struct smu_context {
        struct smu_table_context        smu_table;
        struct smu_dpm_context          smu_dpm;
        struct smu_power_context        smu_power;
+       struct smu_temp_context         smu_temp;
        struct smu_feature              smu_feature;
        struct amd_pp_display_configuration  *display_config;
        struct smu_baco_context         smu_baco;
@@ -623,6 +628,28 @@ struct smu_context {
 
 struct i2c_adapter;
 
+/**
+ * struct smu_temp_funcs - Callbacks used to get temperature data.
+ */
+struct smu_temp_funcs {
+       /**
+        * @get_temp_metrics: Calibrate voltage/frequency curve to fit the 
system's
+        *           power delivery and voltage margins. Required for adaptive
+        * @type Temperature metrics type(baseboard/gpuboard)
+        * Return: Size of &table
+        */
+       ssize_t (*get_temp_metrics)(struct smu_context *smu,
+                                   enum smu_temp_metric_type type, void 
*table);
+
+       /**
+        * @temp_metrics_is_support: Get if specific temperature metrics is 
supported
+        * @type Temperature metrics type(baseboard/gpuboard)
+        * Return: true if supported else false
+        */
+       bool (*temp_metrics_is_supported)(struct smu_context *smu, enum 
smu_temp_metric_type type);
+
+};
+
 /**
  * struct pptable_funcs - Callbacks used to interact with the SMU.
  */
-- 
2.46.0