drm/amdgpu/pm: rework the hwmon visibility settings

Previously we just always exposed everything for asics
supported by powerplay.  Make it a bit more fine grained.
In practice this shouldn't change anything.
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -1246,9 +1246,19 @@ static umode_t hwmon_attributes_visible(struct kobject *kobj,
 	struct amdgpu_device *adev = dev_get_drvdata(dev);
 	umode_t effective_mode = attr->mode;
 
-	/* no skipping for powerplay */
-	if (adev->powerplay.cgs_device)
-		return effective_mode;
+	/* handle non-powerplay limitations */
+	if (!adev->powerplay.cgs_device) {
+		/* Skip fan attributes if fan is not present */
+		if (adev->pm.no_fan &&
+		    (attr == &sensor_dev_attr_pwm1.dev_attr.attr ||
+		     attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr ||
+		     attr == &sensor_dev_attr_pwm1_max.dev_attr.attr ||
+		     attr == &sensor_dev_attr_pwm1_min.dev_attr.attr))
+			return 0;
+		/* requires powerplay */
+		if (attr == &sensor_dev_attr_fan1_input.dev_attr.attr)
+			return 0;
+	}
 
 	/* Skip limit attributes if DPM is not enabled */
 	if (!adev->pm.dpm_enabled &&
@@ -1260,14 +1270,6 @@ static umode_t hwmon_attributes_visible(struct kobject *kobj,
 	     attr == &sensor_dev_attr_pwm1_min.dev_attr.attr))
 		return 0;
 
-	/* Skip fan attributes if fan is not present */
-	if (adev->pm.no_fan &&
-	    (attr == &sensor_dev_attr_pwm1.dev_attr.attr ||
-	     attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr ||
-	     attr == &sensor_dev_attr_pwm1_max.dev_attr.attr ||
-	     attr == &sensor_dev_attr_pwm1_min.dev_attr.attr))
-		return 0;
-
 	/* mask fan attributes if we have no bindings for this asic to expose */
 	if ((!adev->powerplay.pp_funcs->get_fan_speed_percent &&
 	     attr == &sensor_dev_attr_pwm1.dev_attr.attr) || /* can't query fan */
@@ -1288,8 +1290,10 @@ static umode_t hwmon_attributes_visible(struct kobject *kobj,
 	     attr == &sensor_dev_attr_pwm1_min.dev_attr.attr))
 		return 0;
 
-	/* requires powerplay */
-	if (attr == &sensor_dev_attr_fan1_input.dev_attr.attr)
+	/* only APUs have vddnb */
+	if (!(adev->flags & AMD_IS_APU) &&
+	    (attr == &sensor_dev_attr_in1_input.dev_attr.attr ||
+	     attr == &sensor_dev_attr_in1_label.dev_attr.attr))
 		return 0;
 
 	return effective_mode;