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1// SPDX-License-Identifier: GPL-2.0+2/*3 * Copyright (C) 2019-2022 Bootlin4 * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>5 */6 7#include <linux/types.h>8 9#include <drm/drm_atomic.h>10#include <drm/drm_atomic_helper.h>11#include <drm/drm_drv.h>12#include <drm/drm_gem_dma_helper.h>13#include <drm/drm_gem_framebuffer_helper.h>14#include <drm/drm_mode_config.h>15#include <drm/drm_panel.h>16#include <drm/drm_print.h>17#include <drm/drm_probe_helper.h>18#include <drm/drm_vblank.h>19 20#include "logicvc_drm.h"21#include "logicvc_interface.h"22#include "logicvc_layer.h"23#include "logicvc_mode.h"24 25static const struct drm_mode_config_funcs logicvc_mode_config_funcs = {26 .fb_create = drm_gem_fb_create,27 .atomic_check = drm_atomic_helper_check,28 .atomic_commit = drm_atomic_helper_commit,29};30 31int logicvc_mode_init(struct logicvc_drm *logicvc)32{33 struct drm_device *drm_dev = &logicvc->drm_dev;34 struct drm_mode_config *mode_config = &drm_dev->mode_config;35 struct logicvc_layer *layer_primary;36 uint32_t preferred_depth;37 int ret;38 39 ret = drm_vblank_init(drm_dev, mode_config->num_crtc);40 if (ret) {41 drm_err(drm_dev, "Failed to initialize vblank\n");42 return ret;43 }44 45 layer_primary = logicvc_layer_get_primary(logicvc);46 if (!layer_primary) {47 drm_err(drm_dev, "Failed to get primary layer\n");48 return -EINVAL;49 }50 51 preferred_depth = layer_primary->formats->depth;52 53 /* DRM counts alpha in depth, our driver doesn't. */54 if (layer_primary->formats->alpha)55 preferred_depth += 8;56 57 mode_config->min_width = 64;58 mode_config->max_width = 2048;59 mode_config->min_height = 1;60 mode_config->max_height = 2048;61 mode_config->preferred_depth = preferred_depth;62 mode_config->funcs = &logicvc_mode_config_funcs;63 64 drm_mode_config_reset(drm_dev);65 66 drm_kms_helper_poll_init(drm_dev);67 68 return 0;69}70 71void logicvc_mode_fini(struct logicvc_drm *logicvc)72{73 struct drm_device *drm_dev = &logicvc->drm_dev;74 75 drm_kms_helper_poll_fini(drm_dev);76}77