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 <[email protected]>
   7  */
   8
   9 #include <drm/drm_atomic.h>
  10 #include <drm/drm_atomic_helper.h>
  11 #include <drm/drm_gem_framebuffer_helper.h>
  12
  13 #include "sun4i_drv.h"
  14 #include "sun4i_framebuffer.h"
  15
  16 static int sun4i_de_atomic_check(struct drm_device *dev,
  17                                  struct drm_atomic_state *state)
  18 {
  19         int ret;
  20
  21         ret = drm_atomic_helper_check_modeset(dev, state);
  22         if (ret)
  23                 return ret;
  24
  25         ret = drm_atomic_normalize_zpos(dev, state);
  26         if (ret)
  27                 return ret;
  28
  29         return drm_atomic_helper_check_planes(dev, state);
  30 }
  31
  32 static const struct drm_mode_config_funcs sun4i_de_mode_config_funcs = {
  33         .atomic_check           = sun4i_de_atomic_check,
  34         .atomic_commit          = drm_atomic_helper_commit,
  35         .fb_create              = drm_gem_fb_create,
  36 };
  37
  38 static struct drm_mode_config_helper_funcs sun4i_de_mode_config_helpers = {
  39         .atomic_commit_tail     = drm_atomic_helper_commit_tail_rpm,
  40 };
  41
  42 void sun4i_framebuffer_init(struct drm_device *drm)
  43 {
  44         drm_mode_config_reset(drm);
  45
  46         drm->mode_config.max_width = 8192;
  47         drm->mode_config.max_height = 8192;
  48
  49         drm->mode_config.funcs = &sun4i_de_mode_config_funcs;
  50         drm->mode_config.helper_private = &sun4i_de_mode_config_helpers;
  51 }