drm/i915: add gen-specific runtime suspend/resume functions

We're adding runtime suspend support to more platforms, so organize
the code in a way that all a new platform needs to do is to add its
own gen-specific functions. Also rename the i915_ functions to intel_
to make it clear that it's the top level one, not something that just
runs on i915 platforms.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 11f77a8..b3600cb 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -833,7 +833,23 @@ static int i915_pm_poweroff(struct device *dev)
        return i915_drm_freeze(drm_dev);
 }
 
-static int i915_runtime_suspend(struct device *device)
+static void hsw_runtime_suspend(struct drm_i915_private *dev_priv)
+{
+       struct drm_device *dev = dev_priv->dev;
+
+       if (HAS_PC8(dev))
+               hsw_enable_pc8(dev_priv);
+}
+
+static void hsw_runtime_resume(struct drm_i915_private *dev_priv)
+{
+       struct drm_device *dev = dev_priv->dev;
+
+       if (HAS_PC8(dev))
+               hsw_disable_pc8(dev_priv);
+}
+
+static int intel_runtime_suspend(struct device *device)
 {
        struct pci_dev *pdev = to_pci_dev(device);
        struct drm_device *dev = pci_get_drvdata(pdev);
@@ -844,8 +860,8 @@ static int i915_runtime_suspend(struct device *device)
 
        DRM_DEBUG_KMS("Suspending device\n");
 
-       if (HAS_PC8(dev))
-               hsw_enable_pc8(dev_priv);
+       if (IS_HASWELL(dev))
+               hsw_runtime_suspend(dev_priv);
 
        i915_gem_release_all_mmaps(dev_priv);
 
@@ -865,7 +881,7 @@ static int i915_runtime_suspend(struct device *device)
        return 0;
 }
 
-static int i915_runtime_resume(struct device *device)
+static int intel_runtime_resume(struct device *device)
 {
        struct pci_dev *pdev = to_pci_dev(device);
        struct drm_device *dev = pci_get_drvdata(pdev);
@@ -878,8 +894,8 @@ static int i915_runtime_resume(struct device *device)
        intel_opregion_notify_adapter(dev, PCI_D0);
        dev_priv->pm.suspended = false;
 
-       if (HAS_PC8(dev))
-               hsw_disable_pc8(dev_priv);
+       if (IS_HASWELL(dev))
+               hsw_runtime_resume(dev_priv);
 
        DRM_DEBUG_KMS("Device resumed\n");
        return 0;
@@ -892,8 +908,8 @@ static const struct dev_pm_ops i915_pm_ops = {
        .thaw = i915_pm_thaw,
        .poweroff = i915_pm_poweroff,
        .restore = i915_pm_resume,
-       .runtime_suspend = i915_runtime_suspend,
-       .runtime_resume = i915_runtime_resume,
+       .runtime_suspend = intel_runtime_suspend,
+       .runtime_resume = intel_runtime_resume,
 };
 
 static const struct vm_operations_struct i915_gem_vm_ops = {