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_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 const 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 } 52