drm/i915/fbc: Convert to intel_display, mostly

Switch the FBC code over to intel_display from i915, as
much as possible. This is the future direction so that
the display code can be shared between i915 and xe more
cleanly.

Some of the platform checks and the stolen mem facing stiff
still need i915 around though.

v2: Drop some redundant to_i915() casts
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240705145254.3355-3-ville.syrjala@linux.intel.comReviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

drivers/gpu/drm/i915/display/intel_display_debugfs.c

@@ -1008,7 +1008,7 @@ i915_fifo_underrun_reset_write(struct file *filp,
 			return ret;
 	}
 
-	intel_fbc_reset_underrun(dev_priv);
+	intel_fbc_reset_underrun(&dev_priv->display);
 
 	return cnt;
 }
@@ -1063,7 +1063,7 @@ void intel_display_debugfs_register(struct drm_i915_private *i915)
 	intel_bios_debugfs_register(i915);
 	intel_cdclk_debugfs_register(i915);
 	intel_dmc_debugfs_register(i915);
-	intel_fbc_debugfs_register(i915);
+	intel_fbc_debugfs_register(&i915->display);
 	intel_hpd_debugfs_register(i915);
 	intel_opregion_debugfs_register(i915);
 	intel_psr_debugfs_register(i915);

drivers/gpu/drm/i915/display/intel_display_driver.c

@@ -265,7 +265,7 @@ int intel_display_driver_probe_noirq(struct drm_i915_private *i915)
 
 	intel_init_quirks(display);
 
-	intel_fbc_init(i915);
+	intel_fbc_init(display);
 
 	return 0;
 
@@ -607,7 +607,7 @@ void intel_display_driver_remove_noirq(struct drm_i915_private *i915)
 	destroy_workqueue(i915->display.wq.flip);
 	destroy_workqueue(i915->display.wq.modeset);
 
-	intel_fbc_cleanup(i915);
+	intel_fbc_cleanup(&i915->display);
 }
 
 /* part #3: call after gem init */

drivers/gpu/drm/i915/display/intel_fbc.h

@@ -13,6 +13,7 @@ struct drm_i915_private;
 struct intel_atomic_state;
 struct intel_crtc;
 struct intel_crtc_state;
+struct intel_display;
 struct intel_fbc;
 struct intel_plane;
 struct intel_plane_state;
@@ -31,9 +32,9 @@ bool intel_fbc_pre_update(struct intel_atomic_state *state,
 			  struct intel_crtc *crtc);
 void intel_fbc_post_update(struct intel_atomic_state *state,
 			   struct intel_crtc *crtc);
-void intel_fbc_init(struct drm_i915_private *dev_priv);
-void intel_fbc_cleanup(struct drm_i915_private *dev_priv);
-void intel_fbc_sanitize(struct drm_i915_private *dev_priv);
+void intel_fbc_init(struct intel_display *display);
+void intel_fbc_cleanup(struct intel_display *display);
+void intel_fbc_sanitize(struct intel_display *display);
 void intel_fbc_update(struct intel_atomic_state *state,
 		      struct intel_crtc *crtc);
 void intel_fbc_disable(struct intel_crtc *crtc);
@@ -43,9 +44,9 @@ void intel_fbc_invalidate(struct drm_i915_private *dev_priv,
 void intel_fbc_flush(struct drm_i915_private *dev_priv,
 		     unsigned int frontbuffer_bits, enum fb_op_origin origin);
 void intel_fbc_add_plane(struct intel_fbc *fbc, struct intel_plane *plane);
-void intel_fbc_handle_fifo_underrun_irq(struct drm_i915_private *i915);
-void intel_fbc_reset_underrun(struct drm_i915_private *i915);
+void intel_fbc_handle_fifo_underrun_irq(struct intel_display *display);
+void intel_fbc_reset_underrun(struct intel_display *display);
 void intel_fbc_crtc_debugfs_add(struct intel_crtc *crtc);
-void intel_fbc_debugfs_register(struct drm_i915_private *i915);
+void intel_fbc_debugfs_register(struct intel_display *display);
 
 #endif /* __INTEL_FBC_H__ */

drivers/gpu/drm/i915/display/intel_fifo_underrun.c

@@ -440,7 +440,7 @@ void intel_cpu_fifo_underrun_irq_handler(struct drm_i915_private *dev_priv,
 			drm_err(&dev_priv->drm, "CPU pipe %c FIFO underrun\n", pipe_name(pipe));
 	}
 
-	intel_fbc_handle_fifo_underrun_irq(dev_priv);
+	intel_fbc_handle_fifo_underrun_irq(&dev_priv->display);
 }
 
 /**

drivers/gpu/drm/i915/display/intel_modeset_setup.c

@@ -966,7 +966,7 @@ void intel_modeset_setup_hw_state(struct drm_i915_private *i915,
 		}
 	}
 
-	intel_fbc_sanitize(i915);
+	intel_fbc_sanitize(&i915->display);
 
 	intel_sanitize_plane_mapping(i915);