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         if (drv->fbdev)
  24                 drm_fbdev_cma_hotplug_event(drv->fbdev);
  25 }
  26
  27 static const struct drm_mode_config_funcs sun4i_de_mode_config_funcs = {
  28         .output_poll_changed    = sun4i_de_output_poll_changed,
  29         .atomic_check           = drm_atomic_helper_check,
  30         .atomic_commit          = drm_atomic_helper_commit,
  31         .fb_create              = drm_fb_cma_create,
  32 };
  33
  34 struct drm_fbdev_cma *sun4i_framebuffer_init(struct drm_device *drm)
  35 {
  36         drm_mode_config_reset(drm);
  37
  38         drm->mode_config.max_width = 8192;
  39         drm->mode_config.max_height = 8192;
  40
  41         drm->mode_config.funcs = &sun4i_de_mode_config_funcs;
  42
  43         return drm_fbdev_cma_init(drm, 32,
  44                                   drm->mode_config.num_crtc,
  45                                   drm->mode_config.num_connector);
  46 }
  47
  48 void sun4i_framebuffer_free(struct drm_device *drm)
  49 {
  50         struct sun4i_drv *drv = drm->dev_private;
  51
  52         drm_fbdev_cma_fini(drv->fbdev);
  53         drm_mode_config_cleanup(drm);
  54 }