drm/amd/pm: add zero RPM stop temperature OD setting support for SMU13

Together with the feature to enable or disable zero RPM in the last
commit, it also makes sense to expose the OD setting determining under
which temperature the fan should stop if zero RPM is enabled.

Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Wolfgang Müller <wolf@oriole.systems>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

8 files changed, 186 insertions, 2 deletions

diff --git a/Documentation/gpu/amdgpu/thermal.rst b/Documentation/gpu/amdgpu/thermal.rst
index ec6c1f1d5a4a..1768a106aab1 100644
--- a/Documentation/gpu/amdgpu/thermal.rst
+++ b/Documentation/gpu/amdgpu/thermal.rst
@@ -106,6 +106,12 @@ fan_zero_rpm_enable
 .. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c
    :doc: fan_zero_rpm_enable
 
+fan_zero_rpm_stop_temperature
+-----------------------------
+
+.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c
+   :doc: fan_zero_rpm_stop_temperature
+
 GFXOFF
 ======
 
diff --git a/drivers/gpu/drm/amd/include/kgd_pp_interface.h b/drivers/gpu/drm/amd/include/kgd_pp_interface.h
index 80e4b5a7df23..bb27c0d2a9ae 100644
--- a/drivers/gpu/drm/amd/include/kgd_pp_interface.h
+++ b/drivers/gpu/drm/amd/include/kgd_pp_interface.h
@@ -120,6 +120,7 @@ enum pp_clock_type {
 	OD_FAN_TARGET_TEMPERATURE,
 	OD_FAN_MINIMUM_PWM,
 	OD_FAN_ZERO_RPM_ENABLE,
+	OD_FAN_ZERO_RPM_STOP_TEMP,
 };
 
 enum amd_pp_sensors {
@@ -201,6 +202,7 @@ enum PP_OD_DPM_TABLE_COMMAND {
 	PP_OD_EDIT_FAN_TARGET_TEMPERATURE,
 	PP_OD_EDIT_FAN_MINIMUM_PWM,
 	PP_OD_EDIT_FAN_ZERO_RPM_ENABLE,
+	PP_OD_EDIT_FAN_ZERO_RPM_STOP_TEMP,
 };
 
 struct pp_states_info {
diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
index cb96f1f8ca8d..136e8193867c 100644
--- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
@@ -4163,6 +4163,63 @@ static umode_t fan_zero_rpm_enable_visible(struct amdgpu_device *adev)
 	return umode;
 }
 
+/**
+ * DOC: fan_zero_rpm_stop_temperature
+ *
+ * The amdgpu driver provides a sysfs API for checking and adjusting the
+ * zero RPM stop temperature feature.
+ *
+ * Reading back the file shows you the current setting and the permitted
+ * ranges if changable.
+ *
+ * Writing an integer to the file, change the setting accordingly.
+ *
+ * When you have finished the editing, write "c" (commit) to the file to commit
+ * your changes.
+ *
+ * If you want to reset to the default value, write "r" (reset) to the file to
+ * reset them.
+ *
+ * This setting works only if the Zero RPM setting is enabled. It adjusts the
+ * temperature below which the fan can stop.
+ */
+static ssize_t fan_zero_rpm_stop_temp_show(struct kobject *kobj,
+					   struct kobj_attribute *attr,
+					   char *buf)
+{
+	struct od_kobj *container = container_of(kobj, struct od_kobj, kobj);
+	struct amdgpu_device *adev = (struct amdgpu_device *)container->priv;
+
+	return (ssize_t)amdgpu_retrieve_od_settings(adev, OD_FAN_ZERO_RPM_STOP_TEMP, buf);
+}
+
+static ssize_t fan_zero_rpm_stop_temp_store(struct kobject *kobj,
+					    struct kobj_attribute *attr,
+					    const char *buf,
+					    size_t count)
+{
+	struct od_kobj *container = container_of(kobj, struct od_kobj, kobj);
+	struct amdgpu_device *adev = (struct amdgpu_device *)container->priv;
+
+	return (ssize_t)amdgpu_distribute_custom_od_settings(adev,
+							     PP_OD_EDIT_FAN_ZERO_RPM_STOP_TEMP,
+							     buf,
+							     count);
+}
+
+static umode_t fan_zero_rpm_stop_temp_visible(struct amdgpu_device *adev)
+{
+	umode_t umode = 0000;
+
+	if (adev->pm.od_feature_mask & OD_OPS_SUPPORT_FAN_ZERO_RPM_STOP_TEMP_RETRIEVE)
+		umode |= S_IRUSR | S_IRGRP | S_IROTH;
+
+	if (adev->pm.od_feature_mask & OD_OPS_SUPPORT_FAN_ZERO_RPM_STOP_TEMP_SET)
+		umode |= S_IWUSR;
+
+	return umode;
+}
+
 static struct od_feature_set amdgpu_od_set = {
 	.containers = {
 		[0] = {
@@ -4216,6 +4273,14 @@ static struct od_feature_set amdgpu_od_set = {
 						.store = fan_zero_rpm_enable_store,
 					},
 				},
+				[6] = {
+					.name = "fan_zero_rpm_stop_temperature",
+					.ops = {
+						.is_visible = fan_zero_rpm_stop_temp_visible,
+						.show = fan_zero_rpm_stop_temp_show,
+						.store = fan_zero_rpm_stop_temp_store,
+					},
+				},
 			},
 		},
 	},
diff --git a/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h b/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h
index b5daa12c0864..363af8990aa2 100644
--- a/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h
+++ b/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h
@@ -330,6 +330,8 @@ struct config_table_setting
 #define OD_OPS_SUPPORT_FAN_MINIMUM_PWM_SET		BIT(9)
 #define OD_OPS_SUPPORT_FAN_ZERO_RPM_ENABLE_RETRIEVE	BIT(10)
 #define OD_OPS_SUPPORT_FAN_ZERO_RPM_ENABLE_SET		BIT(11)
+#define OD_OPS_SUPPORT_FAN_ZERO_RPM_STOP_TEMP_RETRIEVE	BIT(12)
+#define OD_OPS_SUPPORT_FAN_ZERO_RPM_STOP_TEMP_SET	BIT(13)
 
 struct amdgpu_pm {
 	struct mutex		mutex;
diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index 3458674fe864..64f917959576 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
@@ -2897,6 +2897,8 @@ static enum smu_clk_type smu_convert_to_smuclk(enum pp_clock_type type)
 		clk_type = SMU_OD_FAN_MINIMUM_PWM; break;
 	case OD_FAN_ZERO_RPM_ENABLE:
 		clk_type = SMU_OD_FAN_ZERO_RPM_ENABLE; break;
+	case OD_FAN_ZERO_RPM_STOP_TEMP:
+		clk_type = SMU_OD_FAN_ZERO_RPM_STOP_TEMP; break;
 	default:
 		clk_type = SMU_CLK_COUNT; break;
 	}
diff --git a/drivers/gpu/drm/amd/pm/swsmu/inc/smu_types.h b/drivers/gpu/drm/amd/pm/swsmu/inc/smu_types.h
index e0abb449a3a1..a299dc4a8071 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/inc/smu_types.h
+++ b/drivers/gpu/drm/amd/pm/swsmu/inc/smu_types.h
@@ -314,6 +314,7 @@ enum smu_clk_type {
 	SMU_OD_FAN_TARGET_TEMPERATURE,
 	SMU_OD_FAN_MINIMUM_PWM,
 	SMU_OD_FAN_ZERO_RPM_ENABLE,
+	SMU_OD_FAN_ZERO_RPM_STOP_TEMP,
 	SMU_CLK_COUNT,
 };
 
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
index a7c62bb09aa0..80c6b1e523aa 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
@@ -108,6 +108,7 @@
 #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
 
 #define LINK_SPEED_MAX					3
 
@@ -1135,6 +1136,10 @@ static void smu_v13_0_0_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;
@@ -1473,6 +1478,24 @@ static int smu_v13_0_0_print_clk_levels(struct smu_context *smu,
 				      min_value, max_value);
 		break;
 
+	case SMU_OD_FAN_ZERO_RPM_STOP_TEMP:
+		if (!smu_v13_0_0_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_v13_0_0_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_v13_0_0_is_od_feature_supported(smu, PP_OD_FEATURE_GFXCLK_BIT) &&
 		    !smu_v13_0_0_is_od_feature_supported(smu, PP_OD_FEATURE_UCLK_BIT) &&
@@ -1575,6 +1598,11 @@ static int smu_v13_0_0_od_restore_table_single(struct smu_context *smu, long inp
 					boot_overdrive_table->OverDriveTable.FanZeroRpmEnable;
 		od_table->OverDriveTable.FeatureCtrlMask |= BIT(PP_OD_FEATURE_ZERO_FAN_BIT);
 		break;
+	case PP_OD_EDIT_FAN_ZERO_RPM_STOP_TEMP:
+		od_table->OverDriveTable.FanZeroRpmStopTemp =
+					boot_overdrive_table->OverDriveTable.FanZeroRpmStopTemp;
+		od_table->OverDriveTable.FeatureCtrlMask |= BIT(PP_OD_FEATURE_ZERO_FAN_BIT);
+		break;
 	default:
 		dev_info(adev->dev, "Invalid table index: %ld\n", input);
 		return -EINVAL;
@@ -1889,6 +1917,27 @@ static int smu_v13_0_0_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_v13_0_0_is_od_feature_supported(smu, PP_OD_FEATURE_ZERO_FAN_BIT)) {
+			dev_warn(adev->dev, "Zero RPM setting not supported!\n");
+			return -ENOTSUPP;
+		}
+
+		smu_v13_0_0_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_v13_0_0_od_restore_table_single(smu, input[0]);
@@ -2161,7 +2210,9 @@ static void smu_v13_0_0_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_v13_0_0_set_default_od_settings(struct smu_context *smu)
@@ -2229,6 +2280,8 @@ static int smu_v13_0_0_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_v13_0_0_set_supported_od_feature_mask(smu);
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c
index 1ba2089d8650..c5d3e25cc967 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c
@@ -84,6 +84,7 @@
 #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
 
 #define LINK_SPEED_MAX					3
 
@@ -1124,6 +1125,10 @@ static void smu_v13_0_7_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;
@@ -1462,6 +1467,24 @@ static int smu_v13_0_7_print_clk_levels(struct smu_context *smu,
 				      min_value, max_value);
 		break;
 
+	case SMU_OD_FAN_ZERO_RPM_STOP_TEMP:
+		if (!smu_v13_0_7_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_v13_0_7_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_v13_0_7_is_od_feature_supported(smu, PP_OD_FEATURE_GFXCLK_BIT) &&
 		    !smu_v13_0_7_is_od_feature_supported(smu, PP_OD_FEATURE_UCLK_BIT) &&
@@ -1563,6 +1586,11 @@ static int smu_v13_0_7_od_restore_table_single(struct smu_context *smu, long inp
 					boot_overdrive_table->OverDriveTable.FanZeroRpmEnable;
 		od_table->OverDriveTable.FeatureCtrlMask |= BIT(PP_OD_FEATURE_ZERO_FAN_BIT);
 		break;
+	case PP_OD_EDIT_FAN_ZERO_RPM_STOP_TEMP:
+		od_table->OverDriveTable.FanZeroRpmStopTemp =
+					boot_overdrive_table->OverDriveTable.FanZeroRpmStopTemp;
+		od_table->OverDriveTable.FeatureCtrlMask |= BIT(PP_OD_FEATURE_ZERO_FAN_BIT);
+		break;
 	default:
 		dev_info(adev->dev, "Invalid table index: %ld\n", input);
 		return -EINVAL;
@@ -1877,6 +1905,27 @@ static int smu_v13_0_7_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_v13_0_7_is_od_feature_supported(smu, PP_OD_FEATURE_ZERO_FAN_BIT)) {
+			dev_warn(adev->dev, "Zero RPM setting not supported!\n");
+			return -ENOTSUPP;
+		}
+
+		smu_v13_0_7_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_v13_0_7_od_restore_table_single(smu, input[0]);
@@ -2145,7 +2194,9 @@ static void smu_v13_0_7_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_v13_0_7_set_default_od_settings(struct smu_context *smu)
@@ -2213,6 +2264,8 @@ static int smu_v13_0_7_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_v13_0_7_set_supported_od_feature_mask(smu);