drm/i915: extract intel_display_power.h/c from intel_runtime_pm.h/c

Keep all the device-level PM management in intel_runtime_pm.h/c and move
all the display specific bits into their own file. Also add the new
header to Makefile.header-test.

Apart from the giant code move, the only difference is with the
intel_runtime_<get/put>_raw() functions, which are now exposed in the
header. The _put() version is also not conditionally compiled anymore
since it is ok to always pass the wakeref taken from the _get() to
__intel_runtime_pm_put (it is -1 if tracking is disabled).

Suggested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190531222409.9177-2-daniele.ceraolospurio@intel.com

drivers/gpu/drm/i915/Makefile

@@ -159,6 +159,7 @@ i915-y += intel_audio.o \
 	  intel_combo_phy.o \
 	  intel_connector.o \
 	  intel_display.o \
+	  intel_display_power.o \
 	  intel_dpio_phy.o \
 	  intel_dpll_mgr.o \
 	  intel_fbc.o \

drivers/gpu/drm/i915/Makefile.header-test

@@ -25,6 +25,7 @@ header_test := \
 	intel_crt.h \
 	intel_csr.h \
 	intel_ddi.h \
+	intel_display_power.h \
 	intel_dp.h \
 	intel_dp_aux_backlight.h \
 	intel_dp_link_training.h \

drivers/gpu/drm/i915/i915_drv.h

@@ -70,6 +70,7 @@
 #include "intel_bios.h"
 #include "intel_device_info.h"
 #include "intel_display.h"
+#include "intel_display_power.h"
 #include "intel_dpll_mgr.h"
 #include "intel_frontbuffer.h"
 #include "intel_opregion.h"

drivers/gpu/drm/i915/intel_display_power.h

@@ -0,0 +1,96 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_DISPLAY_POWER_H__
+#define __INTEL_DISPLAY_POWER_H__
+
+#include "intel_display.h"
+#include "intel_runtime_pm.h"
+
+struct drm_i915_private;
+struct intel_encoder;
+
+void skl_enable_dc6(struct drm_i915_private *dev_priv);
+void gen9_sanitize_dc_state(struct drm_i915_private *dev_priv);
+void bxt_enable_dc9(struct drm_i915_private *dev_priv);
+void bxt_disable_dc9(struct drm_i915_private *dev_priv);
+void gen9_enable_dc5(struct drm_i915_private *dev_priv);
+
+int intel_power_domains_init(struct drm_i915_private *dev_priv);
+void intel_power_domains_cleanup(struct drm_i915_private *dev_priv);
+void intel_power_domains_init_hw(struct drm_i915_private *dev_priv, bool resume);
+void intel_power_domains_fini_hw(struct drm_i915_private *dev_priv);
+void icl_display_core_init(struct drm_i915_private *dev_priv, bool resume);
+void icl_display_core_uninit(struct drm_i915_private *dev_priv);
+void intel_power_domains_enable(struct drm_i915_private *dev_priv);
+void intel_power_domains_disable(struct drm_i915_private *dev_priv);
+void intel_power_domains_suspend(struct drm_i915_private *dev_priv,
+				 enum i915_drm_suspend_mode);
+void intel_power_domains_resume(struct drm_i915_private *dev_priv);
+void hsw_enable_pc8(struct drm_i915_private *dev_priv);
+void hsw_disable_pc8(struct drm_i915_private *dev_priv);
+void bxt_display_core_init(struct drm_i915_private *dev_priv, bool resume);
+void bxt_display_core_uninit(struct drm_i915_private *dev_priv);
+
+const char *
+intel_display_power_domain_str(enum intel_display_power_domain domain);
+
+bool intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
+				    enum intel_display_power_domain domain);
+bool __intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
+				      enum intel_display_power_domain domain);
+intel_wakeref_t intel_display_power_get(struct drm_i915_private *dev_priv,
+					enum intel_display_power_domain domain);
+intel_wakeref_t
+intel_display_power_get_if_enabled(struct drm_i915_private *dev_priv,
+				   enum intel_display_power_domain domain);
+void intel_display_power_put_unchecked(struct drm_i915_private *dev_priv,
+				       enum intel_display_power_domain domain);
+void __intel_display_power_put_async(struct drm_i915_private *i915,
+				     enum intel_display_power_domain domain,
+				     intel_wakeref_t wakeref);
+void intel_display_power_flush_work(struct drm_i915_private *i915);
+#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
+void intel_display_power_put(struct drm_i915_private *dev_priv,
+			     enum intel_display_power_domain domain,
+			     intel_wakeref_t wakeref);
+static inline void
+intel_display_power_put_async(struct drm_i915_private *i915,
+			      enum intel_display_power_domain domain,
+			      intel_wakeref_t wakeref)
+{
+	__intel_display_power_put_async(i915, domain, wakeref);
+}
+#else
+static inline void
+intel_display_power_put(struct drm_i915_private *i915,
+			enum intel_display_power_domain domain,
+			intel_wakeref_t wakeref)
+{
+	intel_display_power_put_unchecked(i915, domain);
+}
+
+static inline void
+intel_display_power_put_async(struct drm_i915_private *i915,
+			      enum intel_display_power_domain domain,
+			      intel_wakeref_t wakeref)
+{
+	__intel_display_power_put_async(i915, domain, -1);
+}
+#endif
+
+#define with_intel_display_power(i915, domain, wf) \
+	for ((wf) = intel_display_power_get((i915), (domain)); (wf); \
+	     intel_display_power_put_async((i915), (domain), (wf)), (wf) = 0)
+
+void icl_dbuf_slices_update(struct drm_i915_private *dev_priv,
+			    u8 req_slices);
+
+void chv_phy_powergate_lanes(struct intel_encoder *encoder,
+			     bool override, unsigned int mask);
+bool chv_phy_powergate_ch(struct drm_i915_private *dev_priv, enum dpio_phy phy,
+			  enum dpio_channel ch, bool override);
+
+#endif /* __INTEL_DISPLAY_POWER_H__ */

drivers/gpu/drm/i915/intel_runtime_pm.h

@@ -13,7 +13,6 @@
 
 struct drm_i915_private;
 struct drm_printer;
-struct intel_encoder;
 
 enum i915_drm_suspend_mode {
 	I915_DRM_SUSPEND_IDLE,
@@ -21,89 +20,15 @@ enum i915_drm_suspend_mode {
 	I915_DRM_SUSPEND_HIBERNATE,
 };
 
-void skl_enable_dc6(struct drm_i915_private *dev_priv);
-void gen9_sanitize_dc_state(struct drm_i915_private *dev_priv);
-void bxt_enable_dc9(struct drm_i915_private *dev_priv);
-void bxt_disable_dc9(struct drm_i915_private *dev_priv);
-void gen9_enable_dc5(struct drm_i915_private *dev_priv);
-
 void intel_runtime_pm_init_early(struct drm_i915_private *dev_priv);
-int intel_power_domains_init(struct drm_i915_private *);
-void intel_power_domains_cleanup(struct drm_i915_private *dev_priv);
-void intel_power_domains_init_hw(struct drm_i915_private *dev_priv, bool resume);
-void intel_power_domains_fini_hw(struct drm_i915_private *dev_priv);
-void icl_display_core_init(struct drm_i915_private *dev_priv, bool resume);
-void icl_display_core_uninit(struct drm_i915_private *dev_priv);
-void intel_power_domains_enable(struct drm_i915_private *dev_priv);
-void intel_power_domains_disable(struct drm_i915_private *dev_priv);
-void intel_power_domains_suspend(struct drm_i915_private *dev_priv,
-				 enum i915_drm_suspend_mode);
-void intel_power_domains_resume(struct drm_i915_private *dev_priv);
-void hsw_enable_pc8(struct drm_i915_private *dev_priv);
-void hsw_disable_pc8(struct drm_i915_private *dev_priv);
-void bxt_display_core_init(struct drm_i915_private *dev_priv, bool resume);
-void bxt_display_core_uninit(struct drm_i915_private *dev_priv);
 void intel_runtime_pm_enable(struct drm_i915_private *dev_priv);
 void intel_runtime_pm_disable(struct drm_i915_private *dev_priv);
 void intel_runtime_pm_cleanup(struct drm_i915_private *dev_priv);
 
-const char *
-intel_display_power_domain_str(enum intel_display_power_domain domain);
-
-bool intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
-				    enum intel_display_power_domain domain);
-bool __intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
-				      enum intel_display_power_domain domain);
-intel_wakeref_t intel_display_power_get(struct drm_i915_private *dev_priv,
-					enum intel_display_power_domain domain);
-intel_wakeref_t
-intel_display_power_get_if_enabled(struct drm_i915_private *dev_priv,
-				   enum intel_display_power_domain domain);
-void intel_display_power_put_unchecked(struct drm_i915_private *dev_priv,
-				       enum intel_display_power_domain domain);
-void __intel_display_power_put_async(struct drm_i915_private *i915,
-				     enum intel_display_power_domain domain,
-				     intel_wakeref_t wakeref);
-void intel_display_power_flush_work(struct drm_i915_private *i915);
-#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
-void intel_display_power_put(struct drm_i915_private *dev_priv,
-			     enum intel_display_power_domain domain,
-			     intel_wakeref_t wakeref);
-static inline void
-intel_display_power_put_async(struct drm_i915_private *i915,
-			      enum intel_display_power_domain domain,
-			      intel_wakeref_t wakeref)
-{
-	__intel_display_power_put_async(i915, domain, wakeref);
-}
-#else
-static inline void
-intel_display_power_put(struct drm_i915_private *i915,
-			enum intel_display_power_domain domain,
-			intel_wakeref_t wakeref)
-{
-	intel_display_power_put_unchecked(i915, domain);
-}
-
-static inline void
-intel_display_power_put_async(struct drm_i915_private *i915,
-			      enum intel_display_power_domain domain,
-			      intel_wakeref_t wakeref)
-{
-	__intel_display_power_put_async(i915, domain, -1);
-}
-#endif
-
-#define with_intel_display_power(i915, domain, wf) \
-	for ((wf) = intel_display_power_get((i915), (domain)); (wf); \
-	     intel_display_power_put_async((i915), (domain), (wf)), (wf) = 0)
-
-void icl_dbuf_slices_update(struct drm_i915_private *dev_priv,
-			    u8 req_slices);
-
 intel_wakeref_t intel_runtime_pm_get(struct drm_i915_private *i915);
 intel_wakeref_t intel_runtime_pm_get_if_in_use(struct drm_i915_private *i915);
 intel_wakeref_t intel_runtime_pm_get_noresume(struct drm_i915_private *i915);
+intel_wakeref_t intel_runtime_pm_get_raw(struct drm_i915_private *i915);
 
 #define with_intel_runtime_pm(i915, wf) \
 	for ((wf) = intel_runtime_pm_get(i915); (wf); \
@@ -123,6 +48,7 @@ intel_runtime_pm_put(struct drm_i915_private *i915, intel_wakeref_t wref)
 	intel_runtime_pm_put_unchecked(i915);
 }
 #endif
+void intel_runtime_pm_put_raw(struct drm_i915_private *i915, intel_wakeref_t wref);
 
 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
 void print_intel_runtime_pm_wakeref(struct drm_i915_private *i915,
@@ -134,9 +60,4 @@ static inline void print_intel_runtime_pm_wakeref(struct drm_i915_private *i915,
 }
 #endif
 
-void chv_phy_powergate_lanes(struct intel_encoder *encoder,
-			     bool override, unsigned int mask);
-bool chv_phy_powergate_ch(struct drm_i915_private *dev_priv, enum dpio_phy phy,
-			  enum dpio_channel ch, bool override);
-
 #endif /* __INTEL_RUNTIME_PM_H__ */