8ac80733cf
The amount of plane registers we have to write has been steadily increasing, putting more pressure on the vblank evasion mechanism and forcing us to increase its time budget. Let's try to take some of the pressure off by splitting plane updates into two parts: 1) write all non-self arming plane registers, ie. the registers where the write actually does nothing until a separate arming register is also written which will cause the hardware to latch the new register values at the next start of vblank 2) write all self arming plane registers, ie. registers which always just latch at the next start of vblank, and registers which also arm other registers to do so Here we just provide the mechanism, but don't actually implement the split on any platform yet. so everything stays now in the _arm() hooks. Subsequently we can move a whole bunch of stuff into the _noarm() part, especially in more modern platforms where the number of registers we have to write is also the greatest. On older platforms this is less beneficial probably, but no real reason to deviate from a common behaviour. And let's sprinkle some TODOs around the areas that will need adapting. Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20211018115030.3547-5-ville.syrjala@linux.intel.com Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
73 lines
3.1 KiB
C
73 lines
3.1 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2019 Intel Corporation
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*/
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#ifndef __INTEL_ATOMIC_PLANE_H__
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#define __INTEL_ATOMIC_PLANE_H__
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#include <linux/types.h>
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struct drm_plane;
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struct drm_property;
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struct drm_rect;
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struct intel_atomic_state;
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struct intel_crtc;
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struct intel_crtc_state;
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struct intel_plane;
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struct intel_plane_state;
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unsigned int intel_adjusted_rate(const struct drm_rect *src,
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const struct drm_rect *dst,
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unsigned int rate);
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unsigned int intel_plane_pixel_rate(const struct intel_crtc_state *crtc_state,
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const struct intel_plane_state *plane_state);
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unsigned int intel_plane_data_rate(const struct intel_crtc_state *crtc_state,
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const struct intel_plane_state *plane_state);
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void intel_plane_copy_uapi_to_hw_state(struct intel_plane_state *plane_state,
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const struct intel_plane_state *from_plane_state,
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struct intel_crtc *crtc);
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void intel_plane_copy_hw_state(struct intel_plane_state *plane_state,
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const struct intel_plane_state *from_plane_state);
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void intel_plane_update_noarm(struct intel_plane *plane,
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const struct intel_crtc_state *crtc_state,
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const struct intel_plane_state *plane_state);
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void intel_plane_update_arm(struct intel_plane *plane,
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const struct intel_crtc_state *crtc_state,
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const struct intel_plane_state *plane_state);
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void intel_plane_disable_arm(struct intel_plane *plane,
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const struct intel_crtc_state *crtc_state);
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struct intel_plane *intel_plane_alloc(void);
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void intel_plane_free(struct intel_plane *plane);
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struct drm_plane_state *intel_plane_duplicate_state(struct drm_plane *plane);
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void intel_plane_destroy_state(struct drm_plane *plane,
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struct drm_plane_state *state);
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void intel_update_planes_on_crtc(struct intel_atomic_state *state,
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struct intel_crtc *crtc);
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void skl_arm_planes_on_crtc(struct intel_atomic_state *state,
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struct intel_crtc *crtc);
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void i9xx_arm_planes_on_crtc(struct intel_atomic_state *state,
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struct intel_crtc *crtc);
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int intel_plane_atomic_check_with_state(const struct intel_crtc_state *old_crtc_state,
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struct intel_crtc_state *crtc_state,
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const struct intel_plane_state *old_plane_state,
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struct intel_plane_state *intel_state);
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int intel_plane_atomic_check(struct intel_atomic_state *state,
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struct intel_plane *plane);
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int intel_plane_atomic_calc_changes(const struct intel_crtc_state *old_crtc_state,
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struct intel_crtc_state *crtc_state,
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const struct intel_plane_state *old_plane_state,
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struct intel_plane_state *plane_state);
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int intel_plane_calc_min_cdclk(struct intel_atomic_state *state,
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struct intel_plane *plane,
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bool *need_cdclk_calc);
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int intel_atomic_plane_check_clipping(struct intel_plane_state *plane_state,
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struct intel_crtc_state *crtc_state,
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int min_scale, int max_scale,
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bool can_position);
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void intel_plane_set_invisible(struct intel_crtc_state *crtc_state,
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struct intel_plane_state *plane_state);
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void intel_plane_helper_add(struct intel_plane *plane);
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#endif /* __INTEL_ATOMIC_PLANE_H__ */
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