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_device; 14 struct drm_display_mode; 15 struct drm_file; 16 struct drm_i915_private; 17 struct drm_pending_vblank_event; 18 struct intel_atomic_state; 19 struct intel_crtc; 20 struct intel_crtc_state; 21 struct intel_display; 22 23 /* 24 * FIXME: We should instead only take spinlocks once for the entire update 25 * instead of once per mmio. 26 */ 27 #if IS_ENABLED(CONFIG_PROVE_LOCKING) 28 #define VBLANK_EVASION_TIME_US 250 29 #else 30 #define VBLANK_EVASION_TIME_US 100 31 #endif 32 33 int intel_usecs_to_scanlines(const struct drm_display_mode *adjusted_mode, 34 int usecs); 35 int intel_scanlines_to_usecs(const struct drm_display_mode *adjusted_mode, 36 int scanlines); 37 void intel_crtc_arm_vblank_event(struct intel_crtc_state *crtc_state); 38 void intel_crtc_prepare_vblank_event(struct intel_crtc_state *crtc_state, 39 struct drm_pending_vblank_event **event); 40 u32 intel_crtc_max_vblank_count(const struct intel_crtc_state *crtc_state); 41 int intel_crtc_init(struct drm_i915_private *dev_priv, enum pipe pipe); 42 int intel_crtc_get_pipe_from_crtc_id_ioctl(struct drm_device *dev, void *data, 43 struct drm_file *file_priv); 44 struct intel_crtc_state *intel_crtc_state_alloc(struct intel_crtc *crtc); 45 void intel_crtc_state_reset(struct intel_crtc_state *crtc_state, 46 struct intel_crtc *crtc); 47 u32 intel_crtc_get_vblank_counter(struct intel_crtc *crtc); 48 void intel_crtc_vblank_on(const struct intel_crtc_state *crtc_state); 49 void intel_crtc_vblank_off(const struct intel_crtc_state *crtc_state); 50 void intel_pipe_update_start(struct intel_atomic_state *state, 51 struct intel_crtc *crtc); 52 void intel_pipe_update_end(struct intel_atomic_state *state, 53 struct intel_crtc *crtc); 54 void intel_wait_for_vblank_workers(struct intel_atomic_state *state); 55 struct intel_crtc *intel_first_crtc(struct drm_i915_private *i915); 56 struct intel_crtc *intel_crtc_for_pipe(struct intel_display *display, 57 enum pipe pipe); 58 void intel_wait_for_vblank_if_active(struct drm_i915_private *i915, 59 enum pipe pipe); 60 void intel_crtc_wait_for_next_vblank(struct intel_crtc *crtc); 61 62 #endif 63