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
11enum i9xx_plane_id;
12enum pipe;
13struct drm_display_mode;
14struct drm_i915_private;
15struct intel_atomic_state;
16struct intel_crtc;
17struct 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
29int intel_usecs_to_scanlines(const struct drm_display_mode *adjusted_mode,
30			     int usecs);
31u32 intel_crtc_max_vblank_count(const struct intel_crtc_state *crtc_state);
32int intel_crtc_init(struct drm_i915_private *dev_priv, enum pipe pipe);
33struct intel_crtc_state *intel_crtc_state_alloc(struct intel_crtc *crtc);
34void intel_crtc_state_reset(struct intel_crtc_state *crtc_state,
35			    struct intel_crtc *crtc);
36u32 intel_crtc_get_vblank_counter(struct intel_crtc *crtc);
37void intel_crtc_vblank_on(const struct intel_crtc_state *crtc_state);
38void intel_crtc_vblank_off(const struct intel_crtc_state *crtc_state);
39void intel_pipe_update_start(struct intel_atomic_state *state,
40			     struct intel_crtc *crtc);
41void intel_pipe_update_end(struct intel_atomic_state *state,
42			   struct intel_crtc *crtc);
43void intel_wait_for_vblank_workers(struct intel_atomic_state *state);
44struct intel_crtc *intel_first_crtc(struct drm_i915_private *i915);
45struct intel_crtc *intel_crtc_for_pipe(struct drm_i915_private *i915,
46				       enum pipe pipe);
47void intel_wait_for_vblank_if_active(struct drm_i915_private *i915,
48				     enum pipe pipe);
49void intel_crtc_wait_for_next_vblank(struct intel_crtc *crtc);
50
51#endif
52