drm/i915/opregion: Rename init/fini functions to register/unregister

Current intel_opregion_init is called during the driver registration
phase and intel_opregion_fini from the unregistration phase. Rename the
functions so that this is clear from their names. The phases tell us
what we expect the existing hw state to be, e.g. whether interrupts are
still enabled etc.

It should be noted that the opregion init/fini routines are asymmetric
and this is carried across into their new names. Indeed, their new names
make it even clearer that perhaps all is not well in the opregion
suspend/resume sequence (as well in the module unload).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1464012490-30961-2-git-send-email-chris@chris-wilson.co.uk
Reviewed-by: Jani Nikula <jani.nikula@linux.intel.com>

drivers/gpu/drm/i915/i915_dma.c

@@ -1379,7 +1379,7 @@ static void i915_driver_register(struct drm_i915_private *dev_priv)
 
 	if (INTEL_INFO(dev_priv)->num_pipes) {
 		/* Must be done after probing outputs */
-		intel_opregion_init(dev_priv);
+		intel_opregion_register(dev_priv);
 		acpi_video_register();
 	}
 
@@ -1398,7 +1398,7 @@ static void i915_driver_unregister(struct drm_i915_private *dev_priv)
 	i915_audio_component_cleanup(dev_priv);
 	intel_gpu_ips_teardown();
 	acpi_video_unregister();
-	intel_opregion_fini(dev_priv);
+	intel_opregion_unregister(dev_priv);
 	i915_teardown_sysfs(dev_priv->dev);
 	i915_gem_shrinker_cleanup(dev_priv);
 }

drivers/gpu/drm/i915/i915_drv.c

@@ -631,7 +631,7 @@ static int i915_drm_suspend(struct drm_device *dev)
 	intel_opregion_notify_adapter(dev_priv, opregion_target_state);
 
 	intel_uncore_forcewake_reset(dev_priv, false);
-	intel_opregion_fini(dev_priv);
+	intel_opregion_unregister(dev_priv);
 
 	intel_fbdev_set_suspend(dev, FBINFO_STATE_SUSPENDED, true);
 
@@ -794,7 +794,7 @@ static int i915_drm_resume(struct drm_device *dev)
 	/* Config may have changed between suspend and resume */
 	drm_helper_hpd_irq_event(dev);
 
-	intel_opregion_init(dev_priv);
+	intel_opregion_register(dev_priv);
 
 	intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING, false);
 

drivers/gpu/drm/i915/i915_drv.h

@@ -3609,8 +3609,8 @@ bool intel_bios_is_port_hpd_inverted(struct drm_i915_private *dev_priv,
 /* intel_opregion.c */
 #ifdef CONFIG_ACPI
 extern int intel_opregion_setup(struct drm_i915_private *dev_priv);
-extern void intel_opregion_init(struct drm_i915_private *dev_priv);
-extern void intel_opregion_fini(struct drm_i915_private *dev_priv);
+extern void intel_opregion_register(struct drm_i915_private *dev_priv);
+extern void intel_opregion_unregister(struct drm_i915_private *dev_priv);
 extern void intel_opregion_asle_intr(struct drm_i915_private *dev_priv);
 extern int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
 					 bool enable);

drivers/gpu/drm/i915/intel_opregion.c

@@ -778,7 +778,7 @@ static void intel_setup_cadls(struct drm_i915_private *dev_priv)
 	} while (++i < 8 && disp_id != 0);
 }
 
-void intel_opregion_init(struct drm_i915_private *dev_priv)
+void intel_opregion_register(struct drm_i915_private *dev_priv)
 {
 	struct intel_opregion *opregion = &dev_priv->opregion;
 
@@ -805,7 +805,7 @@ void intel_opregion_init(struct drm_i915_private *dev_priv)
 	}
 }
 
-void intel_opregion_fini(struct drm_i915_private *dev_priv)
+void intel_opregion_unregister(struct drm_i915_private *dev_priv)
 {
 	struct intel_opregion *opregion = &dev_priv->opregion;