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bb6ae9e653
Various pixel formats and plane scaling impose additional constraints
on the cdclk frequency. Provide a new plane->min_cdclk() hook that
will be used to compute the minimum acceptable cdclk frequency for
each plane.
Annoyingly on some platforms the numer of active planes affects
this calculation so we must also toss in more planes into the
state when the number of active planes changes.
The sequence of state computation must also be changed:
1. check_plane() (updates plane's visibility etc.)
2. figure out if more planes now require update min_cdclk
computaion
3. calculate the new min cdclk for each plane in the state
4. if the minimum of any plane now exceeds the current
logical cdclk we recompute the cdclk
4. during cdclk computation take the planes' min_cdclk into
accoutn
5. follow the normal cdclk programming to change the
cdclk frequency. This may now require a modeset (except
on bxt/glk in some cases), which either succeeds or
fails depending on whether userspace has given
us permission to perform a modeset or not.
v2: Fix plane id check in intel_crtc_add_planes_to_state()
Only print the debug message when cdclk needs bumping
Use dev_priv->cdclk... as the old state explicitly
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191015193035.25982-5-ville.syrjala@linux.intel.com
53 lines
2 KiB
C
53 lines
2 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 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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extern const struct drm_plane_helper_funcs intel_plane_helper_funcs;
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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_update_plane(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_update_slave(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_disable_plane(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 skl_update_planes_on_crtc(struct intel_atomic_state *state,
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struct intel_crtc *crtc);
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void i9xx_update_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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bool intel_plane_calc_min_cdclk(struct intel_atomic_state *state,
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struct intel_plane *plane);
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#endif /* __INTEL_ATOMIC_PLANE_H__ */
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