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 intel_crtc; 14 struct intel_crtc_state; 15 16 struct intel_vblank_evade_ctx { 17 struct intel_crtc *crtc; 18 int min, max, vblank_start; 19 bool need_vlv_dsi_wa; 20 }; 21 22 void intel_vblank_evade_init(const struct intel_crtc_state *old_crtc_state, 23 const struct intel_crtc_state *new_crtc_state, 24 struct intel_vblank_evade_ctx *evade); 25 /* must be called with vblank interrupt already enabled! */ 26 int intel_vblank_evade(struct intel_vblank_evade_ctx *evade); 27 28 u32 i915_get_vblank_counter(struct drm_crtc *crtc); 29 u32 g4x_get_vblank_counter(struct drm_crtc *crtc); 30 bool intel_crtc_get_vblank_timestamp(struct drm_crtc *crtc, int *max_error, 31 ktime_t *vblank_time, bool in_vblank_irq); 32 int intel_get_crtc_scanline(struct intel_crtc *crtc); 33 void intel_wait_for_pipe_scanline_stopped(struct intel_crtc *crtc); 34 void intel_wait_for_pipe_scanline_moving(struct intel_crtc *crtc); 35 void intel_crtc_update_active_timings(const struct intel_crtc_state *crtc_state, 36 bool vrr_enable); 37 int intel_crtc_scanline_to_hw(struct intel_crtc *crtc, int scanline); 38 39 #endif /* __INTEL_VBLANK_H__ */ 40