mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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b4bb9f15b4
It attempted to avoid fps drops in the presence of cursor updates. But it is racing, and can result in hw updates after flush before vblank, which leads to underruns. Signed-off-by: Rob Clark <robdclark@chromium.org> Reviewed-by: Sean Paul <sean@poorly.run> Signed-off-by: Rob Clark <robdclark@chromium.org>
78 lines
1.8 KiB
C
78 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2014 Red Hat
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* Author: Rob Clark <robdclark@gmail.com>
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*/
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#include <drm/drm_atomic_uapi.h>
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#include <drm/drm_gem_framebuffer_helper.h>
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#include <drm/drm_vblank.h>
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#include "msm_drv.h"
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#include "msm_gem.h"
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#include "msm_kms.h"
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static void msm_atomic_wait_for_commit_done(struct drm_device *dev,
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struct drm_atomic_state *old_state)
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{
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struct drm_crtc *crtc;
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struct drm_crtc_state *new_crtc_state;
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struct msm_drm_private *priv = old_state->dev->dev_private;
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struct msm_kms *kms = priv->kms;
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int i;
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for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) {
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if (!new_crtc_state->active)
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continue;
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if (drm_crtc_vblank_get(crtc))
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continue;
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kms->funcs->wait_for_crtc_commit_done(kms, crtc);
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drm_crtc_vblank_put(crtc);
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}
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}
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int msm_atomic_prepare_fb(struct drm_plane *plane,
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struct drm_plane_state *new_state)
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{
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struct msm_drm_private *priv = plane->dev->dev_private;
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struct msm_kms *kms = priv->kms;
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if (!new_state->fb)
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return 0;
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drm_gem_fb_prepare_fb(plane, new_state);
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return msm_framebuffer_prepare(new_state->fb, kms->aspace);
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}
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void msm_atomic_commit_tail(struct drm_atomic_state *state)
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{
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struct drm_device *dev = state->dev;
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struct msm_drm_private *priv = dev->dev_private;
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struct msm_kms *kms = priv->kms;
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kms->funcs->prepare_commit(kms, state);
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drm_atomic_helper_commit_modeset_disables(dev, state);
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drm_atomic_helper_commit_planes(dev, state, 0);
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drm_atomic_helper_commit_modeset_enables(dev, state);
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if (kms->funcs->commit) {
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DRM_DEBUG_ATOMIC("triggering commit\n");
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kms->funcs->commit(kms, state);
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}
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msm_atomic_wait_for_commit_done(dev, state);
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kms->funcs->complete_commit(kms, state);
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drm_atomic_helper_commit_hw_done(state);
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drm_atomic_helper_cleanup_planes(dev, state);
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}
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