[Intel-gfx] [RFC 3/7] drm/i915: add helper functions to get device ptr

[Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com>]

We will need struct device pointer to pass it to dev_WARN* calls.

Add helper functions to exract device pointer from various structs.

Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@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 630a94892b7b..6cca8921f3c6 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1523,6 +1523,20 @@ dp_to_i915(struct intel_dp *intel_dp)
 	return to_i915(dp_to_dig_port(intel_dp)->base.base.dev);
 }
 
+static inline struct device *enc_to_dev(const struct intel_encoder *encoder)
+{
+	return encoder->base.dev->dev;
+}
+
+static inline struct 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..2900ef848e84 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 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 b7f122dccdca..bd4557d6f35b 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1314,6 +1314,17 @@ static inline struct drm_i915_private *pdev_to_i915(struct pci_dev *pdev)
 	return pci_get_drvdata(pdev);
 }
 
+static inline struct device *i915_to_dev(const struct drm_i915_private *i915)
+{
+	return i915->drm.dev;
+}
+
+static inline struct 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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