/*
 * This file is part of libsamsung-ipc.
 *
 * Copyright (C) 2012 Alexander Tarasikov <alexander.tarasikov@gmail.com>
 * Copyright (C) 2013-2014 Paul Kocialkowski <contact@paulk.fr>
 *
 * libsamsung-ipc is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 *
 * libsamsung-ipc is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with libsamsung-ipc.  If not, see <http://www.gnu.org/licenses/>.
 */

#define _GNU_SOURCE
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/select.h>

#include <samsung-ipc.h>
#include <ipc.h>

#include <modem.h>
#include <modem_prj.h>
#include <modem_link_device_hsic.h>

#include <xmm626.h>
#include <xmm626_kernel_samsung_smdk4412.h>
#include <xmm626_sec_modem.h>

int xmm626_kernel_samsung_smdk4412_modem_power(int device_fd, int power)
{
    int rc;

    if (device_fd < 0)
        return -1;

    rc = ioctl(device_fd, power ? IOCTL_MODEM_ON : IOCTL_MODEM_OFF, 0);
    if (rc < 0)
        return -1;

    return 0;
}

int xmm626_kernel_samsung_smdk4412_modem_boot_power(int device_fd, int power)
{
    int rc;

    if (device_fd < 0)
        return -1;

    rc = ioctl(device_fd, power ? IOCTL_MODEM_BOOT_ON : IOCTL_MODEM_BOOT_OFF, 0);
    if (rc < 0)
        return -1;

    return 0;
}

int xmm626_kernel_samsung_smdk4412_modem_hci_power(int power)
{
    int ehci_rc, ohci_rc;

    ehci_rc = sysfs_value_write(XMM626_KERNEL_SAMSUNG_SMDK4412_EHCI_POWER_SYSFS, !!power);
    if (ehci_rc >= 0)
        usleep(50000);

    ohci_rc = sysfs_value_write(XMM626_KERNEL_SAMSUNG_SMDK4412_OHCI_POWER_SYSFS, !!power);
    if (ohci_rc >= 0)
        usleep(50000);

    if (ehci_rc < 0 && ohci_rc < 0)
        return -1;

    return 0;
}

int xmm626_kernel_samsung_smdk4412_modem_link_control_enable(int device_fd, int enable)
{
    int rc;

    if (device_fd < 0)
        return -1;

    rc = ioctl(device_fd, IOCTL_LINK_CONTROL_ENABLE, &enable);
    if (rc < 0)
        return -1;

    return 0;
}

int xmm626_kernel_samsung_smdk4412_modem_link_control_active(int device_fd, int active)
{
    int rc;

    if (device_fd < 0)
        return -1;

    rc = ioctl(device_fd, IOCTL_LINK_CONTROL_ACTIVE, &active);
    if (rc < 0)
        return -1;

    return 0;
}

int xmm626_kernel_samsung_smdk4412_modem_link_connected_wait(int device_fd)
{
    int status;
    int i;

    if (device_fd < 0)
        return -1;

    i = 0;
    for (i = 0; i < 100; i++) {
        status = ioctl(device_fd, IOCTL_LINK_CONNECTED, 0);
        if (status)
            return 0;

        usleep(50000);
    }

    return -1;
}

int xmm626_kernel_samsung_smdk4412_modem_link_get_hostwake_wait(int device_fd)
{
    int status;
    int i;

    if (device_fd < 0)
        return -1;

    i = 0;
    for (i = 0; i < 10; i++) {
        status = ioctl(device_fd, IOCTL_LINK_GET_HOSTWAKE, 0);
        if (status)
            return 0;

        usleep(50000);
    }

    return -1;
}

int xmm626_kernel_samsung_smdk4412_modem_open(int type)
{
    int fd;

    switch (type) {
        case IPC_CLIENT_TYPE_FMT:
            fd = open(XMM626_KERNEL_SAMSUNG_SMDK4412_IPC0_DEVICE, O_RDWR | O_NOCTTY | O_NONBLOCK);
            break;
        case IPC_CLIENT_TYPE_RFS:
            fd = open(XMM626_KERNEL_SAMSUNG_SMDK4412_RFS0_DEVICE, O_RDWR | O_NOCTTY | O_NONBLOCK);
            break;
        default:
            return -1;
    }

    return fd;
}

int xmm626_kernel_samsung_smdk4412_modem_read(int fd, void *buffer, size_t length)
{
    int status;
    int rc;

    if (fd < 0 || buffer == NULL || length <= 0)
        return -1;

    status = ioctl(fd, IOCTL_MODEM_STATUS, 0);
    if (status != STATE_ONLINE && status != STATE_BOOTING)
        return -1;

    rc = read(fd, buffer, length);

    return rc;
}

int xmm626_kernel_samsung_smdk4412_modem_write(int fd, const void *buffer, size_t length)
{
    int status;
    int rc;

    if (fd < 0 || buffer == NULL || length <= 0)
        return -1;

    status = ioctl(fd, IOCTL_MODEM_STATUS, 0);
    if (status != STATE_ONLINE && status != STATE_BOOTING)
        return -1;

    rc = write(fd, buffer, length);

    return rc;
}

char *xmm626_kernel_samsung_smdk4412_modem_gprs_get_iface(unsigned int cid)
{
    char *iface = NULL;

    if (cid > XMM626_SEC_MODEM_GPRS_IFACE_COUNT)
        return NULL;

    asprintf(&iface, "%s%d", XMM626_SEC_MODEM_GPRS_IFACE_PREFIX, cid - 1);

    return iface;
}

int xmm626_kernel_samsung_smdk4412_modem_gprs_get_capabilities(struct ipc_client_gprs_capabilities *capabilities)
{
    if (capabilities == NULL)
        return -1;

    capabilities->cid_count = XMM626_SEC_MODEM_GPRS_IFACE_COUNT;

    return 0;
}

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