LXR linux/drivers/gpu/drm/msm/msm

   1/*
   2 * Copyright (C) 2014 Red Hat
   3 * Author: Rob Clark <robdclark@gmail.com>
   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 "msm_drv.h"
  19#include "msm_gem.h"
  20#include "msm_kms.h"
  21
  22static void msm_atomic_wait_for_commit_done(struct drm_device *dev,
  23                struct drm_atomic_state *old_state)
  24{
  25        struct drm_crtc *crtc;
  26        struct drm_crtc_state *new_crtc_state;
  27        struct msm_drm_private *priv = old_state->dev->dev_private;
  28        struct msm_kms *kms = priv->kms;
  29        int i;
  30
  31        for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) {
  32                if (!new_crtc_state->active)
  33                        continue;
  34
  35                kms->funcs->wait_for_crtc_commit_done(kms, crtc);
  36        }
  37}
  38
  39int msm_atomic_prepare_fb(struct drm_plane *plane,
  40                          struct drm_plane_state *new_state)
  41{
  42        struct msm_drm_private *priv = plane->dev->dev_private;
  43        struct msm_kms *kms = priv->kms;
  44        struct drm_gem_object *obj;
  45        struct msm_gem_object *msm_obj;
  46        struct dma_fence *fence;
  47
  48        if (!new_state->fb)
  49                return 0;
  50
  51        obj = msm_framebuffer_bo(new_state->fb, 0);
  52        msm_obj = to_msm_bo(obj);
  53        fence = reservation_object_get_excl_rcu(msm_obj->resv);
  54
  55        drm_atomic_set_fence_for_plane(new_state, fence);
  56
  57        return msm_framebuffer_prepare(new_state->fb, kms->aspace);
  58}
  59
  60void msm_atomic_commit_tail(struct drm_atomic_state *state)
  61{
  62        struct drm_device *dev = state->dev;
  63        struct msm_drm_private *priv = dev->dev_private;
  64        struct msm_kms *kms = priv->kms;
  65
  66        kms->funcs->prepare_commit(kms, state);
  67
  68        drm_atomic_helper_commit_modeset_disables(dev, state);
  69
  70        drm_atomic_helper_commit_planes(dev, state, 0);
  71
  72        drm_atomic_helper_commit_modeset_enables(dev, state);
  73
  74        msm_atomic_wait_for_commit_done(dev, state);
  75
  76        kms->funcs->complete_commit(kms, state);
  77
  78        drm_atomic_helper_wait_for_vblanks(dev, state);
  79
  80        drm_atomic_helper_commit_hw_done(state);
  81
  82        drm_atomic_helper_cleanup_planes(dev, state);
  83}
  84