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_atomic_state; 15 struct intel_crtc; 16 struct intel_crtc_state; 17 18 struct intel_vblank_evade_ctx { 19 struct intel_crtc *crtc; 20 int min, max, vblank_start; 21 bool need_vlv_dsi_wa; 22 }; 23 24 int intel_mode_vdisplay(const struct drm_display_mode *mode); 25 int intel_mode_vblank_start(const struct drm_display_mode *mode); 26 int intel_mode_vblank_end(const struct drm_display_mode *mode); 27 int intel_mode_vtotal(const struct drm_display_mode *mode); 28 int intel_mode_vblank_delay(const struct drm_display_mode *mode); 29 30 void intel_vblank_evade_init(const struct intel_crtc_state *old_crtc_state, 31 const struct intel_crtc_state *new_crtc_state, 32 struct intel_vblank_evade_ctx *evade); 33 /* must be called with vblank interrupt already enabled! */ 34 int intel_vblank_evade(struct intel_vblank_evade_ctx *evade); 35 36 u32 i915_get_vblank_counter(struct drm_crtc *crtc); 37 u32 g4x_get_vblank_counter(struct drm_crtc *crtc); 38 bool intel_crtc_get_vblank_timestamp(struct drm_crtc *crtc, int *max_error, 39 ktime_t *vblank_time, bool in_vblank_irq); 40 int intel_get_crtc_scanline(struct intel_crtc *crtc); 41 void intel_wait_for_pipe_scanline_stopped(struct intel_crtc *crtc); 42 void intel_wait_for_pipe_scanline_moving(struct intel_crtc *crtc); 43 void intel_crtc_update_active_timings(const struct intel_crtc_state *crtc_state, 44 bool vrr_enable); 45 int intel_crtc_scanline_offset(const struct intel_crtc_state *crtc_state); 46 47 const struct intel_crtc_state * 48 intel_pre_commit_crtc_state(struct intel_atomic_state *state, 49 struct intel_crtc *crtc); 50 51 #endif /* __INTEL_VBLANK_H__ */ 52