We will need struct drm_device pointer to pass it to drm_WARN* calls.

Add helper functions to exract drm_device pointer from various structs.

Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharad...@intel.com>
---
 drivers/gpu/drm/i915/display/intel_display_types.h | 14 ++++++++++++++
 drivers/gpu/drm/i915/gvt/gvt.h                     |  5 +++++
 drivers/gpu/drm/i915/i915_drv.h                    | 11 +++++++++++
 3 files changed, 30 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h 
b/drivers/gpu/drm/i915/display/intel_display_types.h
index 7964b3dc0046..765878718fe9 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1521,6 +1521,20 @@ dp_to_i915(struct intel_dp *intel_dp)
        return to_i915(dp_to_dig_port(intel_dp)->base.base.dev);
 }
 
+static inline struct drm_device *enc_to_dev(const struct intel_encoder 
*encoder)
+{
+       return encoder->base.dev;
+}
+
+static inline struct drm_device *
+crtc_state_to_dev(const struct intel_crtc_state *state)
+{
+       struct intel_crtc *crtc = to_intel_crtc(state->uapi.crtc);
+       struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+
+       return i915_to_dev(i915);
+}
+
 static inline struct intel_digital_port *
 hdmi_to_dig_port(struct intel_hdmi *intel_hdmi)
 {
diff --git a/drivers/gpu/drm/i915/gvt/gvt.h b/drivers/gpu/drm/i915/gvt/gvt.h
index b47c6acaf9c0..d257399b075a 100644
--- a/drivers/gpu/drm/i915/gvt/gvt.h
+++ b/drivers/gpu/drm/i915/gvt/gvt.h
@@ -348,6 +348,11 @@ static inline struct intel_gvt *to_gvt(struct 
drm_i915_private *i915)
        return i915->gvt;
 }
 
+static inline struct drm_device *vgpu_to_dev(const struct intel_vgpu *vgpu)
+{
+       return i915_to_dev(vgpu->gvt->dev_priv);
+}
+
 enum {
        INTEL_GVT_REQUEST_EMULATE_VBLANK = 0,
 
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index e7be4c3e43c6..bdc89d021ff8 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1325,6 +1325,17 @@ static inline struct drm_i915_private 
*pdev_to_i915(struct pci_dev *pdev)
        return pci_get_drvdata(pdev);
 }
 
+static inline struct drm_device *i915_to_dev(struct drm_i915_private *i915)
+{
+       return &i915->drm;
+}
+
+static inline struct drm_device *
+perf_stream_to_dev(const struct i915_perf_stream *stream)
+{
+       return i915_to_dev(stream->perf->i915);
+}
+
 /* Simple iterator over all initialised engines */
 #define for_each_engine(engine__, dev_priv__, id__) \
        for ((id__) = 0; \
-- 
2.23.0

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