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 #include <linux/kconfig.h> 11 12 enum i9xx_plane_id; 13 enum pipe; 14 struct drm_display_mode; 15 #define drm_i915_private inteldrm_softc 16 struct drm_i915_private; 17 struct intel_atomic_state; 18 struct intel_crtc; 19 struct intel_crtc_state; 20 21 /* 22 * FIXME: We should instead only take spinlocks once for the entire update 23 * instead of once per mmio. 24 */ 25 #if IS_ENABLED(CONFIG_PROVE_LOCKING) 26 #define VBLANK_EVASION_TIME_US 250 27 #else 28 #define VBLANK_EVASION_TIME_US 100 29 #endif 30 31 int intel_usecs_to_scanlines(const struct drm_display_mode *adjusted_mode, 32 int usecs); 33 void intel_crtc_arm_vblank_event(struct intel_crtc_state *crtc_state); 34 u32 intel_crtc_max_vblank_count(const struct intel_crtc_state *crtc_state); 35 int intel_crtc_init(struct drm_i915_private *dev_priv, enum pipe pipe); 36 struct intel_crtc_state *intel_crtc_state_alloc(struct intel_crtc *crtc); 37 void intel_crtc_state_reset(struct intel_crtc_state *crtc_state, 38 struct intel_crtc *crtc); 39 u32 intel_crtc_get_vblank_counter(struct intel_crtc *crtc); 40 void intel_crtc_vblank_on(const struct intel_crtc_state *crtc_state); 41 void intel_crtc_vblank_off(const struct intel_crtc_state *crtc_state); 42 void intel_pipe_update_start(struct intel_atomic_state *state, 43 struct intel_crtc *crtc); 44 void intel_pipe_update_end(struct intel_atomic_state *state, 45 struct intel_crtc *crtc); 46 void intel_wait_for_vblank_workers(struct intel_atomic_state *state); 47 struct intel_crtc *intel_first_crtc(struct drm_i915_private *i915); 48 struct intel_crtc *intel_crtc_for_pipe(struct drm_i915_private *i915, 49 enum pipe pipe); 50 void intel_wait_for_vblank_if_active(struct drm_i915_private *i915, 51 enum pipe pipe); 52 void intel_crtc_wait_for_next_vblank(struct intel_crtc *crtc); 53 54 #endif 55