// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2019-2022 Bootlin * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com> */ #include <linux/types.h> #include <drm/drm_atomic.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_crtc_helper.h> #include <drm/drm_drv.h> #include <drm/drm_gem_dma_helper.h> #include <drm/drm_gem_framebuffer_helper.h> #include <drm/drm_mode_config.h> #include <drm/drm_panel.h> #include <drm/drm_print.h> #include <drm/drm_probe_helper.h> #include <drm/drm_vblank.h> #include "logicvc_drm.h" #include "logicvc_interface.h" #include "logicvc_layer.h" #include "logicvc_mode.h" static const struct drm_mode_config_funcs logicvc_mode_config_funcs = { .fb_create = drm_gem_fb_create, .atomic_check = drm_atomic_helper_check, .atomic_commit = drm_atomic_helper_commit, }; int logicvc_mode_init(struct logicvc_drm *logicvc) { struct drm_device *drm_dev = &logicvc->drm_dev; struct drm_mode_config *mode_config = &drm_dev->mode_config; struct logicvc_layer *layer_primary; uint32_t preferred_depth; int ret; ret = drm_vblank_init(drm_dev, mode_config->num_crtc); if (ret) { drm_err(drm_dev, "Failed to initialize vblank\n"); return ret; } layer_primary = logicvc_layer_get_primary(logicvc); if (!layer_primary) { drm_err(drm_dev, "Failed to get primary layer\n"); return -EINVAL; } preferred_depth = layer_primary->formats->depth; /* DRM counts alpha in depth, our driver doesn't. */ if (layer_primary->formats->alpha) preferred_depth += 8; mode_config->min_width = 64; mode_config->max_width = 2048; mode_config->min_height = 1; mode_config->max_height = 2048; mode_config->preferred_depth = preferred_depth; mode_config->funcs = &logicvc_mode_config_funcs; drm_mode_config_reset(drm_dev); drm_kms_helper_poll_init(drm_dev); return 0; } void logicvc_mode_fini(struct logicvc_drm *logicvc) { struct drm_device *drm_dev = &logicvc->drm_dev; drm_kms_helper_poll_fini(drm_dev); }