drivers/gpu/drm/sun4i/sun4i_framebuffer.c

   1 /*
   2  * Copyright (C) 2015 Free Electrons
   3  * Copyright (C) 2015 NextThing Co
   4  *
   5  * Maxime Ripard <maxime.ripard@free-electrons.com>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 of
  10  * the License, or (at your option) any later version.
  11  */
  12
  13 #include <drm/drm_atomic.h>
  14 #include <drm/drm_atomic_helper.h>
  15 #include <drm/drm_gem_framebuffer_helper.h>
  16 #include <drm/drmP.h>
  17
  18 #include "sun4i_drv.h"
  19 #include "sun4i_framebuffer.h"
  20
  21 static int sun4i_de_atomic_check(struct drm_device *dev,
  22                                  struct drm_atomic_state *state)
  23 {
  24         int ret;
  25
  26         ret = drm_atomic_helper_check_modeset(dev, state);
  27         if (ret)
  28                 return ret;
  29
  30         ret = drm_atomic_normalize_zpos(dev, state);
  31         if (ret)
  32                 return ret;
  33
  34         return drm_atomic_helper_check_planes(dev, state);
  35 }
  36
  37 static const struct drm_mode_config_funcs sun4i_de_mode_config_funcs = {
  38         .atomic_check           = sun4i_de_atomic_check,
  39         .atomic_commit          = drm_atomic_helper_commit,
  40         .fb_create              = drm_gem_fb_create,
  41 };
  42
  43 static struct drm_mode_config_helper_funcs sun4i_de_mode_config_helpers = {
  44         .atomic_commit_tail     = drm_atomic_helper_commit_tail_rpm,
  45 };
  46
  47 void sun4i_framebuffer_init(struct drm_device *drm)
  48 {
  49         drm_mode_config_reset(drm);
  50
  51         drm->mode_config.max_width = 8192;
  52         drm->mode_config.max_height = 8192;
  53
  54         drm->mode_config.funcs = &sun4i_de_mode_config_funcs;
  55         drm->mode_config.helper_private = &sun4i_de_mode_config_helpers;
  56 }