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__ */ 46