drm/i915: rename i915_init_power_well to init_power_domains_init

Similarly rename the other related functions in the power domain
interface.

Higher level driver code calling these functions knows only about power
domains, not the underlying power wells which may be different on
different platforms. Also these functions really init/cleanup/resume
power domains and only through that all related power wells, so rename
them accordingly.

Note that I left i915_{request,release}_power_well as is, since that
really changes the state only of a single power well (and is HSW
specific). It should also get a better name once we make it more
generic by controlling things through a new audio power domain.

v4:
- use intel prefix instead of i915 everywhere (Paulo)
- use a $prefix_$block_$action format (Daniel)
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_dma.c

@@ -1314,7 +1314,7 @@ static int i915_load_modeset_init(struct drm_device *dev)
 	if (ret)
 		goto cleanup_gem_stolen;
 
-	intel_init_power_well(dev);
+	intel_power_domains_init_hw(dev);
 
 	/* Keep VGA alive until i915_disable_vga_mem() */
 	intel_display_power_get(dev, POWER_DOMAIN_VGA);
@@ -1653,7 +1653,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
 	}
 
 	if (HAS_POWER_WELL(dev))
-		i915_init_power_well(dev);
+		intel_power_domains_init(dev);
 
 	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 		ret = i915_load_modeset_init(dev);
@@ -1681,7 +1681,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
 
 out_power_well:
 	if (HAS_POWER_WELL(dev))
-		i915_remove_power_well(dev);
+		intel_power_domains_remove(dev);
 	drm_vblank_cleanup(dev);
 out_gem_unload:
 	if (dev_priv->mm.inactive_shrinker.scan_objects)
@@ -1724,7 +1724,7 @@ int i915_driver_unload(struct drm_device *dev)
 		 * the power well is not enabled, so just enable it in case
 		 * we're going to unload/reload. */
 		intel_display_set_init_power(dev, true);
-		i915_remove_power_well(dev);
+		intel_power_domains_remove(dev);
 	}
 
 	i915_teardown_sysfs(dev);

drivers/gpu/drm/i915/i915_drv.c

@@ -595,7 +595,7 @@ static int __i915_drm_thaw(struct drm_device *dev, bool restore_gtt_mappings)
 		mutex_unlock(&dev->struct_mutex);
 	}
 
-	intel_init_power_well(dev);
+	intel_power_domains_init_hw(dev);
 
 	i915_restore_state(dev);
 	intel_opregion_setup(dev);

drivers/gpu/drm/i915/intel_drv.h

@@ -823,15 +823,15 @@ bool intel_fbc_enabled(struct drm_device *dev);
 void intel_update_fbc(struct drm_device *dev);
 void intel_gpu_ips_init(struct drm_i915_private *dev_priv);
 void intel_gpu_ips_teardown(void);
-int i915_init_power_well(struct drm_device *dev);
-void i915_remove_power_well(struct drm_device *dev);
+int intel_power_domains_init(struct drm_device *dev);
+void intel_power_domains_remove(struct drm_device *dev);
 bool intel_display_power_enabled(struct drm_device *dev,
 				 enum intel_display_power_domain domain);
 void intel_display_power_get(struct drm_device *dev,
 			     enum intel_display_power_domain domain);
 void intel_display_power_put(struct drm_device *dev,
 			     enum intel_display_power_domain domain);
-void intel_init_power_well(struct drm_device *dev);
+void intel_power_domains_init_hw(struct drm_device *dev);
 void intel_set_power_well(struct drm_device *dev, bool enable);
 void intel_enable_gt_powersave(struct drm_device *dev);
 void intel_disable_gt_powersave(struct drm_device *dev);

drivers/gpu/drm/i915/intel_pm.c

@@ -5670,7 +5670,7 @@ void i915_release_power_well(void)
 }
 EXPORT_SYMBOL_GPL(i915_release_power_well);
 
-int i915_init_power_well(struct drm_device *dev)
+int intel_power_domains_init(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct i915_power_domains *power_domains = &dev_priv->power_domains;
@@ -5685,12 +5685,12 @@ int i915_init_power_well(struct drm_device *dev)
 	return 0;
 }
 
-void i915_remove_power_well(struct drm_device *dev)
+void intel_power_domains_remove(struct drm_device *dev)
 {
 	hsw_pwr = NULL;
 }
 
-static void intel_resume_power_well(struct drm_device *dev)
+static void intel_power_domains_resume(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct i915_power_domains *power_domains = &dev_priv->power_domains;
@@ -5713,7 +5713,7 @@ static void intel_resume_power_well(struct drm_device *dev)
  * to be enabled, and it will only be disabled if none of the registers is
  * requesting it to be enabled.
  */
-void intel_init_power_well(struct drm_device *dev)
+void intel_power_domains_init_hw(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 
@@ -5722,7 +5722,7 @@ void intel_init_power_well(struct drm_device *dev)
 
 	/* For now, we need the power well to be always enabled. */
 	intel_display_set_init_power(dev, true);
-	intel_resume_power_well(dev);
+	intel_power_domains_resume(dev);
 
 	/* We're taking over the BIOS, so clear any requests made by it since
 	 * the driver is in charge now. */