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

   1 /* SPDX-License-Identifier: MIT */
   2 /*
   3  * Copyright © 2020 Intel Corporation
   4  */
   5
   6 #ifndef _INTEL_CRTC_H_
   7 #define _INTEL_CRTC_H_
   8
   9 #include <linux/types.h>
  10
  11 enum i9xx_plane_id;
  12 enum pipe;
  13 struct drm_display_mode;
  14 struct drm_i915_private;
  15 struct intel_atomic_state;
  16 struct intel_crtc;
  17 struct intel_crtc_state;
  18
  19 /*
  20  * FIXME: We should instead only take spinlocks once for the entire update
  21  * instead of once per mmio.
  22  */
  23 #if IS_ENABLED(CONFIG_PROVE_LOCKING)
  24 #define VBLANK_EVASION_TIME_US 250
  25 #else
  26 #define VBLANK_EVASION_TIME_US 100
  27 #endif
  28
  29 int intel_usecs_to_scanlines(const struct drm_display_mode *adjusted_mode,
  30                              int usecs);
  31 u32 intel_crtc_max_vblank_count(const struct intel_crtc_state *crtc_state);
  32 int intel_crtc_init(struct drm_i915_private *dev_priv, enum pipe pipe);
  33 struct intel_crtc_state *intel_crtc_state_alloc(struct intel_crtc *crtc);
  34 void intel_crtc_state_reset(struct intel_crtc_state *crtc_state,
  35                             struct intel_crtc *crtc);
  36 u32 intel_crtc_get_vblank_counter(struct intel_crtc *crtc);
  37 void intel_crtc_vblank_on(const struct intel_crtc_state *crtc_state);
  38 void intel_crtc_vblank_off(const struct intel_crtc_state *crtc_state);
  39 void intel_pipe_update_start(struct intel_atomic_state *state,
  40                              struct intel_crtc *crtc);
  41 void intel_pipe_update_end(struct intel_atomic_state *state,
  42                            struct intel_crtc *crtc);
  43 void intel_wait_for_vblank_workers(struct intel_atomic_state *state);
  44 struct intel_crtc *intel_first_crtc(struct drm_i915_private *i915);
  45 struct intel_crtc *intel_crtc_for_pipe(struct drm_i915_private *i915,
  46                                        enum pipe pipe);
  47 void intel_wait_for_vblank_if_active(struct drm_i915_private *i915,
  48                                      enum pipe pipe);
  49 void intel_crtc_wait_for_next_vblank(struct intel_crtc *crtc);
  50
  51 #endif