[PATCH v2 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.kamal at 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