drivers/gpu/drm/sun4i/sun4i_framebuffer.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Copyright (C) 2015 Free Electrons
   4  * Copyright (C) 2015 NextThing Co
   5  *
   6  * Maxime Ripard <maxime.ripard@free-electrons.com>
   7  */
   8
   9 #include <drm/drm_atomic.h>
  10 #include <drm/drm_atomic_helper.h>
  11 #include <drm/drm_blend.h>
  12 #include <drm/drm_gem_framebuffer_helper.h>
  13
  14 #include "sun4i_drv.h"
  15 #include "sun4i_framebuffer.h"
  16
  17 static int sun4i_de_atomic_check(struct drm_device *dev,
  18                                  struct drm_atomic_state *state)
  19 {
  20         int ret;
  21
  22         ret = drm_atomic_helper_check_modeset(dev, state);
  23         if (ret)
  24                 return ret;
  25
  26         ret = drm_atomic_normalize_zpos(dev, state);
  27         if (ret)
  28                 return ret;
  29
  30         return drm_atomic_helper_check_planes(dev, state);
  31 }
  32
  33 static const struct drm_mode_config_funcs sun4i_de_mode_config_funcs = {
  34         .atomic_check           = sun4i_de_atomic_check,
  35         .atomic_commit          = drm_atomic_helper_commit,
  36         .fb_create              = drm_gem_fb_create,
  37 };
  38
  39 static const struct drm_mode_config_helper_funcs sun4i_de_mode_config_helpers = {
  40         .atomic_commit_tail     = drm_atomic_helper_commit_tail_rpm,
  41 };
  42
  43 void sun4i_framebuffer_init(struct drm_device *drm)
  44 {
  45         drm_mode_config_reset(drm);
  46
  47         drm->mode_config.max_width = 8192;
  48         drm->mode_config.max_height = 8192;
  49
  50         drm->mode_config.funcs = &sun4i_de_mode_config_funcs;
  51         drm->mode_config.helper_private = &sun4i_de_mode_config_helpers;
  52 }