drm/amdgpu/swsmu: handle manual fan readback on SMU11

Need to read back from registers for manual mode rather than
using the metrics table.

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1164Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c

@@ -1123,9 +1123,14 @@ static int arcturus_get_fan_speed_rpm(struct smu_context *smu,
 	if (!speed)
 		return -EINVAL;
 
+	switch (smu_v11_0_get_fan_control_mode(smu)) {
+	case AMD_FAN_CTRL_AUTO:
 		return arcturus_get_smu_metrics_data(smu,
 						     METRICS_CURR_FANSPEED,
 						     speed);
+	default:
+		return smu_v11_0_get_fan_speed_rpm(smu, speed);
+	}
 }
 
 static int arcturus_get_fan_parameters(struct smu_context *smu)

drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c

@@ -1362,9 +1362,14 @@ static int navi10_get_fan_speed_rpm(struct smu_context *smu,
 	if (!speed)
 		return -EINVAL;
 
+	switch (smu_v11_0_get_fan_control_mode(smu)) {
+	case AMD_FAN_CTRL_AUTO:
 		return navi10_get_smu_metrics_data(smu,
 						   METRICS_CURR_FANSPEED,
 						   speed);
+	default:
+		return smu_v11_0_get_fan_speed_rpm(smu, speed);
+	}
 }
 
 static int navi10_get_fan_parameters(struct smu_context *smu)

drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c

@@ -1169,9 +1169,14 @@ static int sienna_cichlid_get_fan_speed_rpm(struct smu_context *smu,
 	if (!speed)
 		return -EINVAL;
 
+	switch (smu_v11_0_get_fan_control_mode(smu)) {
+	case AMD_FAN_CTRL_AUTO:
 		return sienna_cichlid_get_smu_metrics_data(smu,
 							   METRICS_CURR_FANSPEED,
 							   speed);
+	default:
+		return smu_v11_0_get_fan_speed_rpm(smu, speed);
+	}
 }
 
 static int sienna_cichlid_get_fan_parameters(struct smu_context *smu)