a69dcaf931
When determining various scanlines for DSB use we should take into
account whether VRR is active at the time when the DSB uses said
scanline information. For now all DSB scanline usage occurs prior
to the actual commit, so we only need to care about the state of
VRR at that time.
I've decided to move intel_crtc_scanline_to_hw() in its entirety
to the DSB code as it will also need to know the actual state
of VRR in order to do its job 100% correctly.
TODO: figure out how much of this could be moved to some
more generic place and perhaps be shared with the CPU
vblank evasion code/etc...
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240624191032.27333-8-ville.syrjala@linux.intel.com
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
45 lines
1.5 KiB
C
45 lines
1.5 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2022-2023 Intel Corporation
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*/
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#ifndef __INTEL_VBLANK_H__
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#define __INTEL_VBLANK_H__
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#include <linux/ktime.h>
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#include <linux/types.h>
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struct drm_crtc;
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struct drm_display_mode;
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struct intel_crtc;
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struct intel_crtc_state;
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struct intel_vblank_evade_ctx {
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struct intel_crtc *crtc;
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int min, max, vblank_start;
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bool need_vlv_dsi_wa;
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};
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int intel_mode_vdisplay(const struct drm_display_mode *mode);
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int intel_mode_vblank_start(const struct drm_display_mode *mode);
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int intel_mode_vblank_end(const struct drm_display_mode *mode);
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int intel_mode_vtotal(const struct drm_display_mode *mode);
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void intel_vblank_evade_init(const struct intel_crtc_state *old_crtc_state,
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const struct intel_crtc_state *new_crtc_state,
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struct intel_vblank_evade_ctx *evade);
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/* must be called with vblank interrupt already enabled! */
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int intel_vblank_evade(struct intel_vblank_evade_ctx *evade);
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u32 i915_get_vblank_counter(struct drm_crtc *crtc);
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u32 g4x_get_vblank_counter(struct drm_crtc *crtc);
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bool intel_crtc_get_vblank_timestamp(struct drm_crtc *crtc, int *max_error,
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ktime_t *vblank_time, bool in_vblank_irq);
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int intel_get_crtc_scanline(struct intel_crtc *crtc);
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void intel_wait_for_pipe_scanline_stopped(struct intel_crtc *crtc);
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void intel_wait_for_pipe_scanline_moving(struct intel_crtc *crtc);
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void intel_crtc_update_active_timings(const struct intel_crtc_state *crtc_state,
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bool vrr_enable);
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int intel_crtc_scanline_offset(const struct intel_crtc_state *crtc_state);
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#endif /* __INTEL_VBLANK_H__ */
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