drm/amd/powerplay: implement the get_enabled_mask callback for smu12

implement sensor interface of feature mask for debugfs.
Signed-off-by: Xiaomeng Hou <Xiaomeng.Hou@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/inc/smu_v12_0.h

@@ -75,6 +75,9 @@ int smu_v12_0_fini_smc_tables(struct smu_context *smu);
 
 int smu_v12_0_populate_smc_tables(struct smu_context *smu);
 
+int smu_v12_0_get_enabled_mask(struct smu_context *smu,
+				      uint32_t *feature_mask, uint32_t num);
+
 int smu_v12_0_get_current_clk_freq(struct smu_context *smu,
 					  enum smu_clk_type clk_id,
 					  uint32_t *value);

drivers/gpu/drm/amd/powerplay/renoir_ppt.c

@@ -877,6 +877,7 @@ static const struct pptable_funcs renoir_ppt_funcs = {
 	.init_smc_tables = smu_v12_0_init_smc_tables,
 	.fini_smc_tables = smu_v12_0_fini_smc_tables,
 	.populate_smc_tables = smu_v12_0_populate_smc_tables,
+	.get_enabled_mask = smu_v12_0_get_enabled_mask,
 	.get_current_clk_freq = smu_v12_0_get_current_clk_freq,
 	.get_dpm_ultimate_freq = smu_v12_0_get_dpm_ultimate_freq,
 	.mode2_reset = smu_v12_0_mode2_reset,

drivers/gpu/drm/amd/powerplay/smu_v12_0.c

@@ -330,6 +330,35 @@ int smu_v12_0_populate_smc_tables(struct smu_context *smu)
 	return smu_update_table(smu, SMU_TABLE_DPMCLOCKS, 0, smu_table->clocks_table, false);
 }
 
+int smu_v12_0_get_enabled_mask(struct smu_context *smu,
+				      uint32_t *feature_mask, uint32_t num)
+{
+	uint32_t feature_mask_high = 0, feature_mask_low = 0;
+	int ret = 0;
+
+	if (!feature_mask || num < 2)
+		return -EINVAL;
+
+	ret = smu_send_smc_msg(smu, SMU_MSG_GetEnabledSmuFeaturesHigh);
+	if (ret)
+		return ret;
+	ret = smu_read_smc_arg(smu, &feature_mask_high);
+	if (ret)
+		return ret;
+
+	ret = smu_send_smc_msg(smu, SMU_MSG_GetEnabledSmuFeaturesLow);
+	if (ret)
+		return ret;
+	ret = smu_read_smc_arg(smu, &feature_mask_low);
+	if (ret)
+		return ret;
+
+	feature_mask[0] = feature_mask_low;
+	feature_mask[1] = feature_mask_high;
+
+	return ret;
+}
+
 int smu_v12_0_get_current_clk_freq(struct smu_context *smu,
 					  enum smu_clk_type clk_id,
 					  uint32_t *value)