drm/i915: Add intel_uncore_suspend / resume functions

Rename intel_uncore_early_sanitize to intel_uncore_resume, dropping the
(always true) restore_forcewake argument and add a new intel_uncore_resume
function to replace the intel_uncore_forcewake_reset(dev_priv, false)
calls done from the suspend / runtime_suspend functions and make
intel_uncore_forcewake_reset private.

This is a preparation patch for adding PMIC bus access notifier support.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=155241
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: tagorereddy <tagore.chandan@gmail.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170210102802.20898-12-hdegoede@redhat.com

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index f6017f2..58eb308 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -1456,7 +1456,7 @@ static int i915_drm_suspend(struct drm_device *dev)
        opregion_target_state = suspend_to_idle(dev_priv) ? PCI_D1 : PCI_D3cold;
        intel_opregion_notify_adapter(dev_priv, opregion_target_state);
 
-       intel_uncore_forcewake_reset(dev_priv, false);
+       intel_uncore_suspend(dev_priv);
        intel_opregion_unregister(dev_priv);
 
        intel_fbdev_set_suspend(dev, FBINFO_STATE_SUSPENDED, true);
@@ -1701,7 +1701,7 @@ static int i915_drm_resume_early(struct drm_device *dev)
                DRM_ERROR("Resume prepare failed: %d, continuing anyway\n",
                          ret);
 
-       intel_uncore_early_sanitize(dev_priv, true);
+       intel_uncore_resume_early(dev_priv);
 
        if (IS_GEN9_LP(dev_priv)) {
                if (!dev_priv->suspended_to_idle)
@@ -2343,7 +2343,7 @@ static int intel_runtime_suspend(struct device *kdev)
                return ret;
        }
 
-       intel_uncore_forcewake_reset(dev_priv, false);
+       intel_uncore_suspend(dev_priv);
 
        enable_rpm_wakeref_asserts(dev_priv);
        WARN_ON_ONCE(atomic_read(&dev_priv->pm.wakeref_count));

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index e44c598..5f70546 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2984,14 +2984,12 @@ int intel_irq_install(struct drm_i915_private *dev_priv);
 void intel_irq_uninstall(struct drm_i915_private *dev_priv);
 
 extern void intel_uncore_sanitize(struct drm_i915_private *dev_priv);
-extern void intel_uncore_early_sanitize(struct drm_i915_private *dev_priv,
-                                       bool restore_forcewake);
 extern void intel_uncore_init(struct drm_i915_private *dev_priv);
 extern bool intel_uncore_unclaimed_mmio(struct drm_i915_private *dev_priv);
 extern bool intel_uncore_arm_unclaimed_mmio_detection(struct drm_i915_private *dev_priv);
 extern void intel_uncore_fini(struct drm_i915_private *dev_priv);
-extern void intel_uncore_forcewake_reset(struct drm_i915_private *dev_priv,
-                                        bool restore);
+extern void intel_uncore_suspend(struct drm_i915_private *dev_priv);
+extern void intel_uncore_resume_early(struct drm_i915_private *dev_priv);
 const char *intel_uncore_forcewake_domain_to_str(const enum forcewake_domain_id id);
 void intel_uncore_forcewake_get(struct drm_i915_private *dev_priv,
                                enum forcewake_domains domains);

diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
index abe0888..df84b04 100644 (file)
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -250,8 +250,8 @@ intel_uncore_fw_release_timer(struct hrtimer *timer)
        return HRTIMER_NORESTART;
 }
 
-void intel_uncore_forcewake_reset(struct drm_i915_private *dev_priv,
-                                 bool restore)
+static void intel_uncore_forcewake_reset(struct drm_i915_private *dev_priv,
+                                        bool restore)
 {
        unsigned long irqflags;
        struct intel_uncore_forcewake_domain *domain;
@@ -427,10 +427,14 @@ static void __intel_uncore_early_sanitize(struct drm_i915_private *dev_priv,
        intel_uncore_forcewake_reset(dev_priv, restore_forcewake);
 }
 
-void intel_uncore_early_sanitize(struct drm_i915_private *dev_priv,
-                                bool restore_forcewake)
+void intel_uncore_suspend(struct drm_i915_private *dev_priv)
 {
-       __intel_uncore_early_sanitize(dev_priv, restore_forcewake);
+       intel_uncore_forcewake_reset(dev_priv, false);
+}
+
+void intel_uncore_resume_early(struct drm_i915_private *dev_priv)
+{
+       __intel_uncore_early_sanitize(dev_priv, true);
        i915_check_and_clear_faults(dev_priv);
 }