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_helper.h>
  14 #include <drm/drm_fb_cma_helper.h>
  15 #include <drm/drmP.h>
  16
  17 #include "sun4i_drv.h"
  18
  19 static void sun4i_de_output_poll_changed(struct drm_device *drm)
  20 {
  21         struct sun4i_drv *drv = drm->dev_private;
  22
  23         drm_fbdev_cma_hotplug_event(drv->fbdev);
  24 }
  25
  26 static const struct drm_mode_config_funcs sun4i_de_mode_config_funcs = {
  27         .output_poll_changed    = sun4i_de_output_poll_changed,
  28         .atomic_check           = drm_atomic_helper_check,
  29         .atomic_commit          = drm_atomic_helper_commit,
  30         .fb_create              = drm_fb_cma_create,
  31 };
  32
  33 struct drm_fbdev_cma *sun4i_framebuffer_init(struct drm_device *drm)
  34 {
  35         drm_mode_config_reset(drm);
  36
  37         drm->mode_config.max_width = 8192;
  38         drm->mode_config.max_height = 8192;
  39
  40         drm->mode_config.funcs = &sun4i_de_mode_config_funcs;
  41
  42         return drm_fbdev_cma_init(drm, 32,
  43                                   drm->mode_config.num_crtc,
  44                                   drm->mode_config.num_connector);
  45 }
  46
  47 void sun4i_framebuffer_free(struct drm_device *drm)
  48 {
  49         struct sun4i_drv *drv = drm->dev_private;
  50
  51         drm_fbdev_cma_fini(drv->fbdev);
  52         drm_mode_config_cleanup(drm);
  53 }