drm/amd/pm: Add zero RPM enabled OD setting support for SMU14.0.2

Hook up zero RPM enable for 9070 and 9070 XT based on RDNA3
(smu 13.0.0 and 13.0.7) code.

Tested on 9070 XT Hellhound

Signed-off-by: Tomasz Pakuła <tomasz.pakula.oficjalny@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.12.x
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Author: Lawstorant

drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0_2_ppt.c

@@ -79,6 +79,7 @@
 #define PP_OD_FEATURE_FAN_ACOUSTIC_TARGET		8
 #define PP_OD_FEATURE_FAN_TARGET_TEMPERATURE		9
 #define PP_OD_FEATURE_FAN_MINIMUM_PWM			10
+#define PP_OD_FEATURE_FAN_ZERO_RPM_ENABLE		11
 
 static struct cmn2asic_msg_mapping smu_v14_0_2_message_map[SMU_MSG_MAX_COUNT] = {
 	MSG_MAP(TestMessage,			PPSMC_MSG_TestMessage,                 1),
@@ -1052,6 +1053,10 @@ static void smu_v14_0_2_get_od_setting_limits(struct smu_context *smu,
 		od_min_setting = overdrive_lowerlimits->FanMinimumPwm;
 		od_max_setting = overdrive_upperlimits->FanMinimumPwm;
 		break;
+	case PP_OD_FEATURE_FAN_ZERO_RPM_ENABLE:
+		od_min_setting = overdrive_lowerlimits->FanZeroRpmEnable;
+		od_max_setting = overdrive_upperlimits->FanZeroRpmEnable;
+		break;
 	default:
 		od_min_setting = od_max_setting = INT_MAX;
 		break;
@@ -1330,6 +1335,24 @@ static int smu_v14_0_2_print_clk_levels(struct smu_context *smu,
 				      min_value, max_value);
 		break;
 
+	case SMU_OD_FAN_ZERO_RPM_ENABLE:
+		if (!smu_v14_0_2_is_od_feature_supported(smu,
+							 PP_OD_FEATURE_ZERO_FAN_BIT))
+			break;
+
+		size += sysfs_emit_at(buf, size, "FAN_ZERO_RPM_ENABLE:\n");
+		size += sysfs_emit_at(buf, size, "%d\n",
+				(int)od_table->OverDriveTable.FanZeroRpmEnable);
+
+		size += sysfs_emit_at(buf, size, "%s:\n", "OD_RANGE");
+		smu_v14_0_2_get_od_setting_limits(smu,
+						  PP_OD_FEATURE_FAN_ZERO_RPM_ENABLE,
+						  &min_value,
+						  &max_value);
+		size += sysfs_emit_at(buf, size, "ZERO_RPM_ENABLE: %u %u\n",
+				      min_value, max_value);
+		break;
+
 	case SMU_OD_RANGE:
 		if (!smu_v14_0_2_is_od_feature_supported(smu, PP_OD_FEATURE_GFXCLK_BIT) &&
 		    !smu_v14_0_2_is_od_feature_supported(smu, PP_OD_FEATURE_UCLK_BIT) &&
@@ -2270,7 +2293,9 @@ static void smu_v14_0_2_set_supported_od_feature_mask(struct smu_context *smu)
 					    OD_OPS_SUPPORT_FAN_TARGET_TEMPERATURE_RETRIEVE |
 					    OD_OPS_SUPPORT_FAN_TARGET_TEMPERATURE_SET |
 					    OD_OPS_SUPPORT_FAN_MINIMUM_PWM_RETRIEVE |
-					    OD_OPS_SUPPORT_FAN_MINIMUM_PWM_SET;
+					    OD_OPS_SUPPORT_FAN_MINIMUM_PWM_SET |
+					    OD_OPS_SUPPORT_FAN_ZERO_RPM_ENABLE_RETRIEVE |
+					    OD_OPS_SUPPORT_FAN_ZERO_RPM_ENABLE_SET;
 }
 
 static int smu_v14_0_2_get_overdrive_table(struct smu_context *smu,
@@ -2349,6 +2374,8 @@ static int smu_v14_0_2_set_default_od_settings(struct smu_context *smu)
 			user_od_table_bak.OverDriveTable.FanTargetTemperature;
 		user_od_table->OverDriveTable.FanMinimumPwm =
 			user_od_table_bak.OverDriveTable.FanMinimumPwm;
+		user_od_table->OverDriveTable.FanZeroRpmEnable =
+			user_od_table_bak.OverDriveTable.FanZeroRpmEnable;
 	}
 
 	smu_v14_0_2_set_supported_od_feature_mask(smu);
@@ -2396,6 +2423,11 @@ static int smu_v14_0_2_od_restore_table_single(struct smu_context *smu, long inp
 		od_table->OverDriveTable.FanMode = FAN_MODE_AUTO;
 		od_table->OverDriveTable.FeatureCtrlMask |= BIT(PP_OD_FEATURE_FAN_CURVE_BIT);
 		break;
+	case PP_OD_EDIT_FAN_ZERO_RPM_ENABLE:
+		od_table->OverDriveTable.FanZeroRpmEnable =
+					boot_overdrive_table->OverDriveTable.FanZeroRpmEnable;
+		od_table->OverDriveTable.FeatureCtrlMask |= BIT(PP_OD_FEATURE_ZERO_FAN_BIT);
+		break;
 	case PP_OD_EDIT_ACOUSTIC_LIMIT:
 		od_table->OverDriveTable.AcousticLimitRpmThreshold =
 					boot_overdrive_table->OverDriveTable.AcousticLimitRpmThreshold;
@@ -2678,6 +2710,27 @@ static int smu_v14_0_2_od_edit_dpm_table(struct smu_context *smu,
 		od_table->OverDriveTable.FeatureCtrlMask |= BIT(PP_OD_FEATURE_FAN_CURVE_BIT);
 		break;
 
+	case PP_OD_EDIT_FAN_ZERO_RPM_ENABLE:
+		if (!smu_v14_0_2_is_od_feature_supported(smu, PP_OD_FEATURE_ZERO_FAN_BIT)) {
+			dev_warn(adev->dev, "Zero RPM setting not supported!\n");
+			return -ENOTSUPP;
+		}
+
+		smu_v14_0_2_get_od_setting_limits(smu,
+						  PP_OD_FEATURE_FAN_ZERO_RPM_ENABLE,
+						  &minimum,
+						  &maximum);
+		if (input[0] < minimum ||
+		    input[0] > maximum) {
+			dev_info(adev->dev, "zero RPM enable setting(%ld) must be within [%d, %d]!\n",
+				 input[0], minimum, maximum);
+			return -EINVAL;
+		}
+
+		od_table->OverDriveTable.FanZeroRpmEnable = input[0];
+		od_table->OverDriveTable.FeatureCtrlMask |= BIT(PP_OD_FEATURE_ZERO_FAN_BIT);
+		break;
+
 	case PP_OD_RESTORE_DEFAULT_TABLE:
 		if (size == 1) {
 			ret = smu_v14_0_2_od_restore_table_single(smu, input[0]);