drm/gma500: Inline psb_gtt_restore()

Inline psb_gtt_restore() into its only caller in power.c.

Perform the GTT restoration in psb_gem_mm_resume(). The restoration
step is part of GEM anyway and will be moved over at some point.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220308195222.13471-10-tzimmermann@suse.de

drivers/gpu/drm/gma500/gtt.c

@@ -339,7 +339,7 @@ int psb_gem_mm_init(struct drm_device *dev)
 	return ret;
 }
 
-static int psb_gtt_resume(struct drm_device *dev)
+int psb_gtt_resume(struct drm_device *dev)
 {
 	struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
 	struct pci_dev *pdev = to_pci_dev(dev->dev);
@@ -422,7 +422,7 @@ static int psb_gtt_resume(struct drm_device *dev)
 	return ret;
 }
 
-static int psb_gem_mm_resume(struct drm_device *dev)
+int psb_gem_mm_resume(struct drm_device *dev)
 {
 	struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
 	struct pci_dev *pdev = to_pci_dev(dev->dev);
@@ -445,17 +445,6 @@ static int psb_gem_mm_resume(struct drm_device *dev)
 	}
 
 	psb_gtt_populate_stolen(dev_priv);
-
-	return 0;
-}
-
-int psb_gtt_restore(struct drm_device *dev)
-{
-	struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
-
-	psb_gtt_resume(dev);
-	psb_gem_mm_resume(dev);
-
 	psb_gtt_populate_resources(dev_priv);
 
 	return 0;

drivers/gpu/drm/gma500/gtt.h

@@ -27,7 +27,7 @@ struct psb_gtt {
 /* Exported functions */
 int psb_gtt_init(struct drm_device *dev);
 void psb_gtt_fini(struct drm_device *dev);
-extern int psb_gtt_restore(struct drm_device *dev);
+int psb_gtt_resume(struct drm_device *dev);
 
 int psb_gtt_allocate_resource(struct drm_psb_private *pdev, struct resource *res,
 			      const char *name, resource_size_t size, resource_size_t align,
@@ -39,5 +39,6 @@ void psb_gtt_remove_pages(struct drm_psb_private *pdev, const struct resource *r
 
 int psb_gem_mm_init(struct drm_device *dev);
 void psb_gem_mm_fini(struct drm_device *dev);
+int psb_gem_mm_resume(struct drm_device *dev);
 
 #endif

drivers/gpu/drm/gma500/power.c

@@ -112,7 +112,9 @@ static void gma_resume_display(struct pci_dev *pdev)
 	pci_write_config_word(pdev, PSB_GMCH_CTRL,
 			dev_priv->gmch_ctrl | _PSB_GMCH_ENABLED);
 
-	psb_gtt_restore(dev); /* Rebuild our GTT mappings */
+	/* Rebuild our GTT mappings */
+	psb_gtt_resume(dev);
+	psb_gem_mm_resume(dev);
 	dev_priv->ops->restore_regs(dev);
 }