[PATCH 1/5] drm/i915/fbdev: Add intel_fbdev_getvaddr()

[Jocelyn Falempe <jfalempe@redhat.com>]

The vaddr of the fbdev framebuffer is private to the struct
intel_fbdev, so this function is needed to access it for drm_panic.

Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
---
 drivers/gpu/drm/i915/display/intel_fbdev.c | 5 +++++
 drivers/gpu/drm/i915/display/intel_fbdev.h | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c
index 00852ff5b2470..9f4acc2d75601 100644
--- a/drivers/gpu/drm/i915/display/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/display/intel_fbdev.c
@@ -695,3 +695,8 @@ struct intel_framebuffer *intel_fbdev_framebuffer(struct intel_fbdev *fbdev)
 
 	return to_intel_framebuffer(fbdev->helper.fb);
 }
+
+void *intel_fbdev_getvaddr(struct intel_fbdev *fbdev)
+{
+	return READ_ONCE(fbdev->vma->iomap);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.h b/drivers/gpu/drm/i915/display/intel_fbdev.h
index 08de2d5b34338..014fa5896af52 100644
--- a/drivers/gpu/drm/i915/display/intel_fbdev.h
+++ b/drivers/gpu/drm/i915/display/intel_fbdev.h
@@ -17,6 +17,7 @@ struct intel_framebuffer;
 void intel_fbdev_setup(struct drm_i915_private *dev_priv);
 void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous);
 struct intel_framebuffer *intel_fbdev_framebuffer(struct intel_fbdev *fbdev);
+void *intel_fbdev_getvaddr(struct intel_fbdev *fbdev);
 #else
 static inline void intel_fbdev_setup(struct drm_i915_private *dev_priv)
 {
@@ -30,6 +31,10 @@ static inline struct intel_framebuffer *intel_fbdev_framebuffer(struct intel_fbd
 {
 	return NULL;
 }
+static inline void *intel_fbdev_getvaddr(struct intel_fbdev *fbdev)
+{
+	return NULL;
+}
 #endif
 
 #endif /* __INTEL_FBDEV_H__ */
-- 
2.47.0