drivers/gpu/drm/msm/msm_atomic.c

   1 /*
   2  * Copyright (C) 2014 Red Hat
   3  * Author: Rob Clark <[email protected]>
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 as published by
   7  * the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include <drm/drm_atomic_uapi.h>
  19
  20 #include "msm_drv.h"
  21 #include "msm_gem.h"
  22 #include "msm_kms.h"
  23
  24 static void msm_atomic_wait_for_commit_done(struct drm_device *dev,
  25                 struct drm_atomic_state *old_state)
  26 {
  27         struct drm_crtc *crtc;
  28         struct drm_crtc_state *new_crtc_state;
  29         struct msm_drm_private *priv = old_state->dev->dev_private;
  30         struct msm_kms *kms = priv->kms;
  31         int i;
  32
  33         for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) {
  34                 if (!new_crtc_state->active)
  35                         continue;
  36
  37                 kms->funcs->wait_for_crtc_commit_done(kms, crtc);
  38         }
  39 }
  40
  41 int msm_atomic_prepare_fb(struct drm_plane *plane,
  42                           struct drm_plane_state *new_state)
  43 {
  44         struct msm_drm_private *priv = plane->dev->dev_private;
  45         struct msm_kms *kms = priv->kms;
  46         struct drm_gem_object *obj;
  47         struct msm_gem_object *msm_obj;
  48         struct dma_fence *fence;
  49
  50         if (!new_state->fb)
  51                 return 0;
  52
  53         obj = msm_framebuffer_bo(new_state->fb, 0);
  54         msm_obj = to_msm_bo(obj);
  55         fence = reservation_object_get_excl_rcu(msm_obj->resv);
  56
  57         drm_atomic_set_fence_for_plane(new_state, fence);
  58
  59         return msm_framebuffer_prepare(new_state->fb, kms->aspace);
  60 }
  61
  62 void msm_atomic_commit_tail(struct drm_atomic_state *state)
  63 {
  64         struct drm_device *dev = state->dev;
  65         struct msm_drm_private *priv = dev->dev_private;
  66         struct msm_kms *kms = priv->kms;
  67
  68         kms->funcs->prepare_commit(kms, state);
  69
  70         drm_atomic_helper_commit_modeset_disables(dev, state);
  71
  72         drm_atomic_helper_commit_planes(dev, state, 0);
  73
  74         drm_atomic_helper_commit_modeset_enables(dev, state);
  75
  76         if (kms->funcs->commit) {
  77                 DRM_DEBUG_ATOMIC("triggering commit\n");
  78                 kms->funcs->commit(kms, state);
  79         }
  80
  81         msm_atomic_wait_for_commit_done(dev, state);
  82
  83         kms->funcs->complete_commit(kms, state);
  84
  85         drm_atomic_helper_commit_hw_done(state);
  86
  87         drm_atomic_helper_cleanup_planes(dev, state);
  88 }