drivers/gpu/drm/sun4i/sun4i_framebuffer.c

   1 /*
   2  * Copyright (C) 2015 Free Electrons
   3  * Copyright (C) 2015 NextThing Co
   4  *
   5  * Maxime Ripard <[email protected]>
   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/drm_gem_framebuffer_helper.h>
  16 #include <drm/drmP.h>
  17
  18 #include "sun4i_drv.h"
  19 #include "sun4i_framebuffer.h"
  20
  21 static void sun4i_de_output_poll_changed(struct drm_device *drm)
  22 {
  23         struct sun4i_drv *drv = drm->dev_private;
  24
  25         drm_fbdev_cma_hotplug_event(drv->fbdev);
  26 }
  27
  28 static const struct drm_mode_config_funcs sun4i_de_mode_config_funcs = {
  29         .output_poll_changed    = sun4i_de_output_poll_changed,
  30         .atomic_check           = drm_atomic_helper_check,
  31         .atomic_commit          = drm_atomic_helper_commit,
  32         .fb_create              = drm_gem_fb_create,
  33 };
  34
  35 struct drm_fbdev_cma *sun4i_framebuffer_init(struct drm_device *drm)
  36 {
  37         drm_mode_config_reset(drm);
  38
  39         drm->mode_config.max_width = 8192;
  40         drm->mode_config.max_height = 8192;
  41
  42         drm->mode_config.funcs = &sun4i_de_mode_config_funcs;
  43
  44         return drm_fbdev_cma_init(drm, 32, 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 }