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_display_mode; 14 #define drm_i915_private inteldrm_softc 15 struct drm_i915_private; 16 struct intel_atomic_state; 17 struct intel_crtc; 18 struct intel_crtc_state; 19 20 /* 21 * FIXME: We should instead only take spinlocks once for the entire update 22 * instead of once per mmio. 23 */ 24 #if IS_ENABLED(CONFIG_PROVE_LOCKING) 25 #define VBLANK_EVASION_TIME_US 250 26 #else 27 #define VBLANK_EVASION_TIME_US 100 28 #endif 29 30 int intel_usecs_to_scanlines(const struct drm_display_mode *adjusted_mode, 31 int usecs); 32 u32 intel_crtc_max_vblank_count(const struct intel_crtc_state *crtc_state); 33 int intel_crtc_init(struct drm_i915_private *dev_priv, enum pipe pipe); 34 struct intel_crtc_state *intel_crtc_state_alloc(struct intel_crtc *crtc); 35 void intel_crtc_state_reset(struct intel_crtc_state *crtc_state, 36 struct intel_crtc *crtc); 37 u32 intel_crtc_get_vblank_counter(struct intel_crtc *crtc); 38 void intel_crtc_vblank_on(const struct intel_crtc_state *crtc_state); 39 void intel_crtc_vblank_off(const struct intel_crtc_state *crtc_state); 40 void intel_pipe_update_start(struct intel_crtc_state *new_crtc_state); 41 void intel_pipe_update_end(struct intel_crtc_state *new_crtc_state); 42 void intel_wait_for_vblank_workers(struct intel_atomic_state *state); 43 struct intel_crtc *intel_first_crtc(struct drm_i915_private *i915); 44 struct intel_crtc *intel_crtc_for_pipe(struct drm_i915_private *i915, 45 enum pipe pipe); 46 void intel_wait_for_vblank_if_active(struct drm_i915_private *i915, 47 enum pipe pipe); 48 void intel_crtc_wait_for_next_vblank(struct intel_crtc *crtc); 49 50 #endif 51