/*
   Copyright (c) 2015 Broadcom Corporation
   All Rights Reserved

    <:label-BRCM:2015:DUAL/GPL:standard

    Unless you and Broadcom execute a separate written software license
    agreement governing use of this software, this software is licensed
    to you under the terms of the GNU General Public License version 2
    (the "GPL"), available at http://www.broadcom.com/licenses/GPLv2.php,
    with the following added to such license:

       As a special exception, the copyright holders of this software give
       you permission to link this software with independent modules, and
       to copy and distribute the resulting executable under terms of your
       choice, provided that you also meet, for each linked independent
       module, the terms and conditions of the license of that module.
       An independent module is a module which is not derived from this
       software.  The special exception does not apply to any modifications
       of the software.

    Not withstanding the above, under no circumstances may you combine
    this software in any way with any other Broadcom software provided
    under a license other than the GPL, without Broadcom's express prior
    written consent.

:>
*/

/*
 *  Created on: Oct 2016
 *      Author: ido.brezel@broadcom.com
 */

/*
 * Generic phy status mechanism for pon phy driver
 */

#include "phy_drv.h"

static phy_dev_t *g_phy_dev = NULL;
static int g_link;
static phy_speed_t g_speed = PHY_SPEED_UNKNOWN;
static phy_duplex_t g_duplex = PHY_DUPLEX_UNKNOWN;

phy_dev_t * enet_pon_phy_dev_get(void)
{
    return g_phy_dev;
}
EXPORT_SYMBOL(enet_pon_phy_dev_get);

void enet_pon_drv_link_change(int link)
{
    if (g_link == link)
        return;

    g_link = link;

    if (g_phy_dev)
        phy_dev_link_change_notify(g_phy_dev);
}
EXPORT_SYMBOL(enet_pon_drv_link_change);

void enet_pon_drv_speed_change(phy_speed_t speed, phy_duplex_t duplex)
{
    g_speed = speed;
    g_duplex = duplex;
}
EXPORT_SYMBOL(enet_pon_drv_speed_change);

static int _drv_init(phy_drv_t *phy_drv)
{
    return g_phy_dev != NULL;
}

static int _phy_init(phy_dev_t *phy_dev)
{
    phy_dev->mii_type = PHY_MII_TYPE_SERDES;
    phy_dev_link_change_notify(phy_dev);

    return 0;
}

static int _phy_read_status(phy_dev_t *phy_dev)
{
    phy_dev->speed = PHY_SPEED_UNKNOWN;
    phy_dev->duplex = PHY_DUPLEX_UNKNOWN;

    phy_dev->link = g_link;
    if (!phy_dev->link)
        goto Exit;

    phy_dev->speed = g_speed;
    phy_dev->duplex = g_duplex;

Exit:
    return 0;
}

static int _link_change_register(phy_dev_t *phy_dev)
{
    g_phy_dev = phy_dev;

    return 0;
}

static int _link_change_unregister(phy_dev_t *phy_dev)
{
    g_phy_dev = NULL;

    return 0;
}

phy_drv_t phy_drv_pon =
{
    .phy_type = PHY_TYPE_PON,
    .name = "PON",
    .init = _phy_init,
    .read_status = _phy_read_status,
    .drv_init = _drv_init,
    .link_change_register = _link_change_register,
    .link_change_unregister = _link_change_unregister,
};
EXPORT_SYMBOL(phy_drv_pon);