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.h> 14 #include <drm/drm_atomic_helper.h> 15 #include <drm/drm_fb_helper.h> 16 #include <drm/drm_fb_cma_helper.h> 17 #include <drm/drm_gem_framebuffer_helper.h> 18 #include <drm/drmP.h> 19 20 #include "sun4i_drv.h" 21 #include "sun4i_framebuffer.h" 22 23 static int sun4i_de_atomic_check(struct drm_device *dev, 24 struct drm_atomic_state *state) 25 { 26 int ret; 27 28 ret = drm_atomic_helper_check_modeset(dev, state); 29 if (ret) 30 return ret; 31 32 ret = drm_atomic_normalize_zpos(dev, state); 33 if (ret) 34 return ret; 35 36 return drm_atomic_helper_check_planes(dev, state); 37 } 38 39 static const struct drm_mode_config_funcs sun4i_de_mode_config_funcs = { 40 .output_poll_changed = drm_fb_helper_output_poll_changed, 41 .atomic_check = sun4i_de_atomic_check, 42 .atomic_commit = drm_atomic_helper_commit, 43 .fb_create = drm_gem_fb_create, 44 }; 45 46 static struct drm_mode_config_helper_funcs sun4i_de_mode_config_helpers = { 47 .atomic_commit_tail = drm_atomic_helper_commit_tail_rpm, 48 }; 49 50 int sun4i_framebuffer_init(struct drm_device *drm) 51 { 52 drm_mode_config_reset(drm); 53 54 drm->mode_config.max_width = 8192; 55 drm->mode_config.max_height = 8192; 56 57 drm->mode_config.funcs = &sun4i_de_mode_config_funcs; 58 drm->mode_config.helper_private = &sun4i_de_mode_config_helpers; 59 60 return drm_fb_cma_fbdev_init(drm, 32, 0); 61 } 62 63 void sun4i_framebuffer_free(struct drm_device *drm) 64 { 65 drm_fb_cma_fbdev_fini(drm); 66 } 67