drm/i915: Capture interesting display registers on error
When trying to diagnose mysterious errors on resume, capture the
display register contents as well.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 826c723..4c20ad9 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -140,6 +140,8 @@
u8 ddc_pin;
};
+struct intel_display_error_state;
+
struct drm_i915_error_state {
u32 eir;
u32 pgtbl_er;
@@ -187,6 +189,7 @@
} *active_bo, *pinned_bo;
u32 active_bo_count, pinned_bo_count;
struct intel_overlay_error_state *overlay;
+ struct intel_display_error_state *display;
};
struct drm_i915_display_funcs {
@@ -1223,6 +1226,11 @@
#ifdef CONFIG_DEBUG_FS
extern struct intel_overlay_error_state *intel_overlay_capture_error_state(struct drm_device *dev);
extern void intel_overlay_print_error_state(struct seq_file *m, struct intel_overlay_error_state *error);
+
+extern struct intel_display_error_state *intel_display_capture_error_state(struct drm_device *dev);
+extern void intel_display_print_error_state(struct seq_file *m,
+ struct drm_device *dev,
+ struct intel_display_error_state *error);
#endif
/**