[PATCH 2/2] drm/amd/pm: add zero RPM stop temp OD setting support for SMU 14.0.2

[Tomasz Pakuła]

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

Signed-off-by: Tomasz Pakuła <tomasz.pakula.oficjalny at gmail.com>
---
 .../swsmu/inc/pmfw_if/smu14_driver_if_v14_0.h |  3 +-
 .../drm/amd/pm/swsmu/smu14/smu_v14_0_2_ppt.c  | 50 ++++++++++++++++++-
 2 files changed, 51 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/inc/pmfw_if/smu14_driver_if_v14_0.h b/drivers/gpu/drm/amd/pm/swsmu/inc/pmfw_if/smu14_driver_if_v14_0.h
index c2fd0a4a13e5..a5eba7b91e2f 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/inc/pmfw_if/smu14_driver_if_v14_0.h
+++ b/drivers/gpu/drm/amd/pm/swsmu/inc/pmfw_if/smu14_driver_if_v14_0.h
@@ -846,9 +846,10 @@ typedef struct {
   uint16_t               FanTargetTemperature; // Degree Celcius
   //zero fan
   uint8_t                FanZeroRpmEnable;
+  uint8_t                FanZeroRpmStopTemp;
   //temperature
   uint8_t                MaxOpTemp;
-  uint8_t                Padding1[2];
+  uint8_t                Padding1;
 
   //Full Ctrl
   uint16_t               GfxVoltageFullCtrlMode;
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0_2_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0_2_ppt.c
index fedf0c8c4741..4e7eed0cc41c 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0_2_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0_2_ppt.c
@@ -80,6 +80,7 @@
 #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
+#define PP_OD_FEATURE_FAN_ZERO_RPM_STOP_TEMP		12
 
 static struct cmn2asic_msg_mapping smu_v14_0_2_message_map[SMU_MSG_MAX_COUNT] = {
 	MSG_MAP(TestMessage,			PPSMC_MSG_TestMessage,                 1),
@@ -1057,6 +1058,10 @@ static void smu_v14_0_2_get_od_setting_limits(struct smu_context *smu,
 		od_min_setting = overdrive_lowerlimits->FanZeroRpmEnable;
 		od_max_setting = overdrive_upperlimits->FanZeroRpmEnable;
 		break;
+	case PP_OD_FEATURE_FAN_ZERO_RPM_STOP_TEMP:
+		od_min_setting = overdrive_lowerlimits->FanZeroRpmStopTemp;
+		od_max_setting = overdrive_upperlimits->FanZeroRpmStopTemp;
+		break;
 	default:
 		od_min_setting = od_max_setting = INT_MAX;
 		break;
@@ -1360,6 +1365,24 @@ static int smu_v14_0_2_print_clk_levels(struct smu_context *smu,
 				      min_value, max_value);
 		break;
 
+	case SMU_OD_FAN_ZERO_RPM_STOP_TEMP:
+		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_STOP_TEMPERATURE:\n");
+		size += sysfs_emit_at(buf, size, "%d\n",
+					(int)od_table->OverDriveTable.FanZeroRpmStopTemp);
+
+		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_STOP_TEMP,
+						  &min_value,
+						  &max_value);
+		size += sysfs_emit_at(buf, size, "ZERO_RPM_STOP_TEMPERATURE: %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) &&
@@ -2306,7 +2329,9 @@ static void smu_v14_0_2_set_supported_od_feature_mask(struct smu_context *smu)
 					    OD_OPS_SUPPORT_FAN_MINIMUM_PWM_RETRIEVE |
 					    OD_OPS_SUPPORT_FAN_MINIMUM_PWM_SET |
 					    OD_OPS_SUPPORT_FAN_ZERO_RPM_ENABLE_RETRIEVE |
-					    OD_OPS_SUPPORT_FAN_ZERO_RPM_ENABLE_SET;
+					    OD_OPS_SUPPORT_FAN_ZERO_RPM_ENABLE_SET |
+					    OD_OPS_SUPPORT_FAN_ZERO_RPM_STOP_TEMP_RETRIEVE |
+					    OD_OPS_SUPPORT_FAN_ZERO_RPM_STOP_TEMP_SET;
 }
 
 static int smu_v14_0_2_get_overdrive_table(struct smu_context *smu,
@@ -2387,6 +2412,8 @@ static int smu_v14_0_2_set_default_od_settings(struct smu_context *smu)
 			user_od_table_bak.OverDriveTable.FanMinimumPwm;
 		user_od_table->OverDriveTable.FanZeroRpmEnable =
 			user_od_table_bak.OverDriveTable.FanZeroRpmEnable;
+		user_od_table->OverDriveTable.FanZeroRpmStopTemp =
+			user_od_table_bak.OverDriveTable.FanZeroRpmStopTemp;
 	}
 
 	smu_v14_0_2_set_supported_od_feature_mask(smu);
@@ -2754,6 +2781,27 @@ static int smu_v14_0_2_od_edit_dpm_table(struct smu_context *smu,
 		od_table->OverDriveTable.FeatureCtrlMask |= BIT(PP_OD_FEATURE_ZERO_FAN_BIT);
 		break;
 
+	case PP_OD_EDIT_FAN_ZERO_RPM_STOP_TEMP:
+		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_STOP_TEMP,
+						  &minimum,
+						  &maximum);
+		if (input[0] < minimum ||
+		    input[0] > maximum) {
+			dev_info(adev->dev, "zero RPM stop temperature setting(%ld) must be within [%d, %d]!\n",
+				 input[0], minimum, maximum);
+			return -EINVAL;
+		}
+
+		od_table->OverDriveTable.FanZeroRpmStopTemp = 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]);
-- 
2.48.1