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 <drm/drm_atomic_uapi.h>
  19
  20#include "msm_drv.h"
  21#include "msm_gem.h"
  22#include "msm_kms.h"
  23
  24static 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                if (drm_crtc_vblank_get(crtc))
  38                        continue;
  39
  40                kms->funcs->wait_for_crtc_commit_done(kms, crtc);
  41
  42                drm_crtc_vblank_put(crtc);
  43        }
  44}
  45
  46int msm_atomic_prepare_fb(struct drm_plane *plane,
  47                          struct drm_plane_state *new_state)
  48{
  49        struct msm_drm_private *priv = plane->dev->dev_private;
  50        struct msm_kms *kms = priv->kms;
  51        struct drm_gem_object *obj;
  52        struct msm_gem_object *msm_obj;
  53        struct dma_fence *fence;
  54
  55        if (!new_state->fb)
  56                return 0;
  57
  58        obj = msm_framebuffer_bo(new_state->fb, 0);
  59        msm_obj = to_msm_bo(obj);
  60        fence = reservation_object_get_excl_rcu(msm_obj->resv);
  61
  62        drm_atomic_set_fence_for_plane(new_state, fence);
  63
  64        return msm_framebuffer_prepare(new_state->fb, kms->aspace);
  65}
  66
  67void msm_atomic_commit_tail(struct drm_atomic_state *state)
  68{
  69        struct drm_device *dev = state->dev;
  70        struct msm_drm_private *priv = dev->dev_private;
  71        struct msm_kms *kms = priv->kms;
  72
  73        kms->funcs->prepare_commit(kms, state);
  74
  75        drm_atomic_helper_commit_modeset_disables(dev, state);
  76
  77        drm_atomic_helper_commit_planes(dev, state, 0);
  78
  79        drm_atomic_helper_commit_modeset_enables(dev, state);
  80
  81        if (kms->funcs->commit) {
  82                DRM_DEBUG_ATOMIC("triggering commit\n");
  83                kms->funcs->commit(kms, state);
  84        }
  85
  86        if (!state->legacy_cursor_update)
  87                msm_atomic_wait_for_commit_done(dev, state);
  88
  89        kms->funcs->complete_commit(kms, state);
  90
  91        drm_atomic_helper_commit_hw_done(state);
  92
  93        drm_atomic_helper_cleanup_planes(dev, state);
  94}
  95