default_recovery_ui.c

/*
 * Copyright (C) 2009 The Android Open Source Project
 * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <linux/input.h>
#include <errno.h>
#include <fcntl.h>

#include "recovery_ui.h"
#include "common.h"

char* MENU_HEADERS[] = { "Android system recovery utility",
                         "",
                         NULL };

char* MENU_ITEMS[] = { "reboot system now",
                       "apply update from external storage",
                       "wipe data/factory reset",
                       "wipe cache partition",
                       "apply update from cache",
                       NULL };

char const*const LCD_FILE
        = "/sys/class/leds/lcd-backlight/brightness";

static int write_int(char const* path, int value) {
    int fd;
    static int already_warned = 0;

    fd = open(path, O_RDWR);
    if (fd >= 0) {
        char buffer[20];
        int bytes = sprintf(buffer, "%d\n", value);
        int amt = write(fd, buffer, bytes);
        close(fd);
        return amt == -1 ? -errno : 0;
    } else {
        if (already_warned == 0) {
            fprintf(stderr, "write_int failed to open %s\n", path);
            already_warned = 1;
        }
        return -errno;
    }
}

static int device_on_off_lcd_backlight(int on) {
    if(on)
        return write_int(LCD_FILE, 255);
    else
        return write_int(LCD_FILE, 0);
}

void device_ui_init(UIParameters* ui_parameters) {
    /* Turn on backlight */
    device_on_off_lcd_backlight(1);
}

int device_recovery_start() {
    return 0;
}

int device_toggle_display(volatile char* key_pressed, int key_code) {
    return key_code == KEY_HOME;
}

int device_reboot_now(volatile char* key_pressed, int key_code) {
    return 0;
}

int device_handle_key(int key_code, int visible) {
    if (visible) {
        switch (key_code) {
            case KEY_DOWN:
            case KEY_VOLUMEDOWN:
                return HIGHLIGHT_DOWN;

            case KEY_UP:
            case KEY_VOLUMEUP:
                return HIGHLIGHT_UP;

            case KEY_FN_F1:
            case KEY_ENTER:
            case KEY_POWER:
                return SELECT_ITEM;
        }
    }

    return NO_ACTION;
}

int device_perform_action(int which) {
    return which;
}

int device_wipe_data() {
    return 0;
}