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

   1 /* SPDX-License-Identifier: MIT */
   2 /*
   3  * Copyright © 2022-2023 Intel Corporation
   4  */
   5
   6 #ifndef __INTEL_VBLANK_H__
   7 #define __INTEL_VBLANK_H__
   8
   9 #include <linux/ktime.h>
  10 #include <linux/types.h>
  11
  12 struct drm_crtc;
  13 struct drm_display_mode;
  14 struct intel_crtc;
  15 struct intel_crtc_state;
  16
  17 struct intel_vblank_evade_ctx {
  18         struct intel_crtc *crtc;
  19         int min, max, vblank_start;
  20         bool need_vlv_dsi_wa;
  21 };
  22
  23 int intel_mode_vdisplay(const struct drm_display_mode *mode);
  24 int intel_mode_vblank_start(const struct drm_display_mode *mode);
  25 int intel_mode_vblank_end(const struct drm_display_mode *mode);
  26 int intel_mode_vtotal(const struct drm_display_mode *mode);
  27
  28 void intel_vblank_evade_init(const struct intel_crtc_state *old_crtc_state,
  29                              const struct intel_crtc_state *new_crtc_state,
  30                              struct intel_vblank_evade_ctx *evade);
  31 /* must be called with vblank interrupt already enabled! */
  32 int intel_vblank_evade(struct intel_vblank_evade_ctx *evade);
  33
  34 u32 i915_get_vblank_counter(struct drm_crtc *crtc);
  35 u32 g4x_get_vblank_counter(struct drm_crtc *crtc);
  36 bool intel_crtc_get_vblank_timestamp(struct drm_crtc *crtc, int *max_error,
  37                                      ktime_t *vblank_time, bool in_vblank_irq);
  38 int intel_get_crtc_scanline(struct intel_crtc *crtc);
  39 void intel_wait_for_pipe_scanline_stopped(struct intel_crtc *crtc);
  40 void intel_wait_for_pipe_scanline_moving(struct intel_crtc *crtc);
  41 void intel_crtc_update_active_timings(const struct intel_crtc_state *crtc_state,
  42                                       bool vrr_enable);
  43 int intel_crtc_scanline_offset(const struct intel_crtc_state *crtc_state);
  44
  45 #endif /* __INTEL_VBLANK_H__ */