| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Implementation of a expo, a collection of scenes providing menu options |
| * |
| * Copyright 2022 Google LLC |
| * Written by Simon Glass <sjg@chromium.org> |
| */ |
| |
| #include <common.h> |
| #include <dm.h> |
| #include <expo.h> |
| #include <malloc.h> |
| #include <video.h> |
| #include "scene_internal.h" |
| |
| int expo_new(const char *name, void *priv, struct expo **expp) |
| { |
| struct expo *exp; |
| |
| exp = calloc(1, sizeof(struct expo)); |
| if (!exp) |
| return log_msg_ret("expo", -ENOMEM); |
| exp->name = strdup(name); |
| if (!exp->name) { |
| free(exp); |
| return log_msg_ret("name", -ENOMEM); |
| } |
| exp->priv = priv; |
| INIT_LIST_HEAD(&exp->scene_head); |
| INIT_LIST_HEAD(&exp->str_head); |
| |
| *expp = exp; |
| |
| return 0; |
| } |
| |
| static void estr_destroy(struct expo_string *estr) |
| { |
| free(estr); |
| } |
| |
| void expo_destroy(struct expo *exp) |
| { |
| struct scene *scn, *next; |
| struct expo_string *estr, *enext; |
| |
| list_for_each_entry_safe(scn, next, &exp->scene_head, sibling) |
| scene_destroy(scn); |
| |
| list_for_each_entry_safe(estr, enext, &exp->str_head, sibling) |
| estr_destroy(estr); |
| |
| free(exp->name); |
| free(exp); |
| } |
| |
| int expo_str(struct expo *exp, const char *name, uint id, const char *str) |
| { |
| struct expo_string *estr; |
| |
| estr = calloc(1, sizeof(struct expo_string)); |
| if (!estr) |
| return log_msg_ret("obj", -ENOMEM); |
| |
| estr->id = resolve_id(exp, id); |
| estr->str = str; |
| list_add_tail(&estr->sibling, &exp->str_head); |
| |
| return estr->id; |
| } |
| |
| const char *expo_get_str(struct expo *exp, uint id) |
| { |
| struct expo_string *estr; |
| |
| list_for_each_entry(estr, &exp->str_head, sibling) { |
| if (estr->id == id) |
| return estr->str; |
| } |
| |
| return NULL; |
| } |
| |
| int expo_set_display(struct expo *exp, struct udevice *dev) |
| { |
| struct udevice *cons; |
| int ret; |
| |
| ret = device_find_first_child_by_uclass(dev, UCLASS_VIDEO_CONSOLE, |
| &cons); |
| if (ret) |
| return log_msg_ret("con", ret); |
| |
| exp->display = dev; |
| exp->cons = cons; |
| |
| return 0; |
| } |
| |
| void expo_set_text_mode(struct expo *exp, bool text_mode) |
| { |
| exp->text_mode = text_mode; |
| } |
| |
| struct scene *expo_lookup_scene_id(struct expo *exp, uint scene_id) |
| { |
| struct scene *scn; |
| |
| list_for_each_entry(scn, &exp->scene_head, sibling) { |
| if (scn->id == scene_id) |
| return scn; |
| } |
| |
| return NULL; |
| } |
| |
| int expo_set_scene_id(struct expo *exp, uint scene_id) |
| { |
| struct scene *scn; |
| int ret; |
| |
| scn = expo_lookup_scene_id(exp, scene_id); |
| if (!scn) |
| return log_msg_ret("id", -ENOENT); |
| ret = scene_arrange(scn); |
| if (ret) |
| return log_msg_ret("arr", ret); |
| |
| exp->scene_id = scene_id; |
| |
| return 0; |
| } |
| |
| int expo_render(struct expo *exp) |
| { |
| struct udevice *dev = exp->display; |
| struct video_priv *vid_priv = dev_get_uclass_priv(dev); |
| struct scene *scn = NULL; |
| u32 colour; |
| int ret; |
| |
| colour = video_index_to_colour(vid_priv, VID_WHITE); |
| ret = video_fill(dev, colour); |
| if (ret) |
| return log_msg_ret("fill", ret); |
| |
| if (exp->scene_id) { |
| scn = expo_lookup_scene_id(exp, exp->scene_id); |
| if (!scn) |
| return log_msg_ret("scn", -ENOENT); |
| |
| ret = scene_render(scn); |
| if (ret) |
| return log_msg_ret("ren", ret); |
| } |
| |
| video_sync(dev, true); |
| |
| return scn ? 0 : -ECHILD; |
| } |
| |
| int expo_send_key(struct expo *exp, int key) |
| { |
| struct scene *scn = NULL; |
| |
| if (exp->scene_id) { |
| int ret; |
| |
| scn = expo_lookup_scene_id(exp, exp->scene_id); |
| if (!scn) |
| return log_msg_ret("scn", -ENOENT); |
| |
| ret = scene_send_key(scn, key, &exp->action); |
| if (ret) |
| return log_msg_ret("key", ret); |
| |
| /* arrange it to get any changes */ |
| ret = scene_arrange(scn); |
| if (ret) |
| return log_msg_ret("arr", ret); |
| } |
| |
| return scn ? 0 : -ECHILD; |
| } |
| |
| int expo_action_get(struct expo *exp, struct expo_action *act) |
| { |
| *act = exp->action; |
| exp->action.type = EXPOACT_NONE; |
| |
| return act->type == EXPOACT_NONE ? -EAGAIN : 0; |
| } |