/* * Copyright (C) 2015 Broadcom * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ /** * DOC: VC4 KMS * * This is the general code for implementing KMS mode setting that * doesn't clearly associate with any of the other objects (plane, * crtc, HDMI encoder). */ #include "drm_crtc.h" #include "drm_atomic_helper.h" #include "drm_crtc_helper.h" #include "drm_plane_helper.h" #include "drm_fb_cma_helper.h" #include "vc4_drv.h" static void vc4_output_poll_changed(struct drm_device *dev) { struct vc4_dev *vc4 = to_vc4_dev(dev); if (vc4->fbdev) drm_fbdev_cma_hotplug_event(vc4->fbdev); } static const struct drm_mode_config_funcs vc4_mode_funcs = { .output_poll_changed = vc4_output_poll_changed, .atomic_check = drm_atomic_helper_check, .atomic_commit = drm_atomic_helper_commit, .fb_create = drm_fb_cma_create, }; int vc4_kms_load(struct drm_device *dev) { struct vc4_dev *vc4 = to_vc4_dev(dev); int ret; ret = drm_vblank_init(dev, dev->mode_config.num_crtc); if (ret < 0) { dev_err(dev->dev, "failed to initialize vblank\n"); return ret; } dev->mode_config.max_width = 2048; dev->mode_config.max_height = 2048; dev->mode_config.funcs = &vc4_mode_funcs; dev->mode_config.preferred_depth = 24; dev->vblank_disable_allowed = true; drm_mode_config_reset(dev); vc4->fbdev = drm_fbdev_cma_init(dev, 32, dev->mode_config.num_crtc, dev->mode_config.num_connector); if (IS_ERR(vc4->fbdev)) vc4->fbdev = NULL; drm_kms_helper_poll_init(dev); return 0; }