drm/amd/pm: Add GC v9.4.3 thermal limits to hwmon

Publish max operating temperature of SOC and memory as temp*_emergency
nodes in hwmon. temp*_crit will show the throttle temperature limits.
Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Asad Kamal <asad.kamal@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/pm/amdgpu_pm.c

@@ -3423,15 +3423,20 @@ static umode_t hwmon_attributes_visible(struct kobject *kobj,
 		return 0;
 
 	/* hotspot temperature for gc 9,4,3*/
-	if ((gc_ver == IP_VERSION(9, 4, 3)) &&
-	    (attr == &sensor_dev_attr_temp1_input.dev_attr.attr ||
-	     attr == &sensor_dev_attr_temp1_label.dev_attr.attr))
-		return 0;
+	if (gc_ver == IP_VERSION(9, 4, 3)) {
+		if (attr == &sensor_dev_attr_temp1_input.dev_attr.attr ||
+		    attr == &sensor_dev_attr_temp1_emergency.dev_attr.attr ||
+		    attr == &sensor_dev_attr_temp1_label.dev_attr.attr)
+			return 0;
+
+		if (attr == &sensor_dev_attr_temp2_emergency.dev_attr.attr ||
+		    attr == &sensor_dev_attr_temp3_emergency.dev_attr.attr)
+			return attr->mode;
+	}
 
 	/* only SOC15 dGPUs support hotspot and mem temperatures */
-	if (((adev->flags & AMD_IS_APU) || gc_ver < IP_VERSION(9, 0, 0) ||
-	    (gc_ver == IP_VERSION(9, 4, 3))) &&
-	     (attr == &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr ||
+	if (((adev->flags & AMD_IS_APU) || gc_ver < IP_VERSION(9, 0, 0)) &&
+	    (attr == &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr ||
 	     attr == &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr ||
 	     attr == &sensor_dev_attr_temp1_emergency.dev_attr.attr ||
 	     attr == &sensor_dev_attr_temp2_emergency.dev_attr.attr ||