//
// Copyright 2010 Ettus Research LLC
//
// This program 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 3 of the License, or
// (at your option) any later version.
//
// This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
//


#include "usrp2_impl.hpp"
#include "usrp2_regs.hpp"
#include <uhd/usrp/dboard_eeprom.hpp>
#include <uhd/usrp/subdev_props.hpp>
#include <uhd/usrp/dboard_props.hpp>
#include <uhd/utils/assert.hpp>
#include <boost/format.hpp>
#include <boost/bind.hpp>
#include <boost/asio.hpp> //htonl and ntohl
#include <iostream>

using namespace uhd;
using namespace uhd::usrp;

/***********************************************************************
 * Helper Methods
 **********************************************************************/
void usrp2_impl::dboard_init(void){
    //extract the dboard ids
    dboard_eeprom_t db_rx_eeprom(_iface->read_eeprom(I2C_ADDR_RX_DB, 0, dboard_eeprom_t::num_bytes()));
    dboard_eeprom_t db_tx_eeprom(_iface->read_eeprom(I2C_ADDR_TX_DB, 0, dboard_eeprom_t::num_bytes()));

    //create a new dboard interface and manager
    dboard_iface::sptr _dboard_iface(
        make_usrp2_dboard_iface(_iface, _clk_ctrl)
    );
    _dboard_manager = dboard_manager::make(
        db_rx_eeprom.id, db_tx_eeprom.id, _dboard_iface
    );

    //load dboards
    _rx_dboard_proxy = wax_obj_proxy::make(
        boost::bind(&usrp2_impl::rx_dboard_get, this, _1, _2),
        boost::bind(&usrp2_impl::rx_dboard_set, this, _1, _2)
    );
    _tx_dboard_proxy = wax_obj_proxy::make(
        boost::bind(&usrp2_impl::tx_dboard_get, this, _1, _2),
        boost::bind(&usrp2_impl::tx_dboard_set, this, _1, _2)
    );

    //init the subdevs in use (use the first subdevice)
    _rx_subdevs_in_use = prop_names_t(1, _dboard_manager->get_rx_subdev_names().at(0));
    update_rx_mux_config();

    _tx_subdevs_in_use = prop_names_t(1, _dboard_manager->get_tx_subdev_names().at(0));
    update_tx_mux_config();
}

void usrp2_impl::update_rx_mux_config(void){
    //calculate the rx mux
    boost::uint32_t rx_mux = 0;
    ASSERT_THROW(_rx_subdevs_in_use.size() == 1);
    wax::obj rx_subdev = _dboard_manager->get_rx_subdev(_rx_subdevs_in_use.at(0));
    std::cout << "Using: " << rx_subdev[SUBDEV_PROP_NAME].as<std::string>() << std::endl;
    if (rx_subdev[SUBDEV_PROP_QUADRATURE].as<bool>()){
        rx_mux = (0x01 << 2) | (0x00 << 0); //Q=ADC1, I=ADC0
    }else{
        rx_mux = 0x00; //ADC0
    }
    if (rx_subdev[SUBDEV_PROP_IQ_SWAPPED].as<bool>()){
        rx_mux = (((rx_mux >> 0) & 0x3) << 2) | (((rx_mux >> 2) & 0x3) << 0);
    }

    _iface->poke32(FR_DSP_RX_MUX, rx_mux);
}

void usrp2_impl::update_tx_mux_config(void){
    //calculate the tx mux
    boost::uint32_t tx_mux = 0x10;
    ASSERT_THROW(_tx_subdevs_in_use.size() == 1);
    wax::obj tx_subdev = _dboard_manager->get_tx_subdev(_tx_subdevs_in_use.at(0));
    std::cout << "Using: " << tx_subdev[SUBDEV_PROP_NAME].as<std::string>() << std::endl;
    if (tx_subdev[SUBDEV_PROP_IQ_SWAPPED].as<bool>()){
        tx_mux = (((tx_mux >> 0) & 0xf) << 4) | (((tx_mux >> 4) & 0xf) << 0);
    }

    _iface->poke32(FR_DSP_TX_MUX, tx_mux);
}

/***********************************************************************
 * RX DBoard Properties
 **********************************************************************/
void usrp2_impl::rx_dboard_get(const wax::obj &key_, wax::obj &val){
    wax::obj key; std::string name;
    boost::tie(key, name) = extract_named_prop(key_);

    //handle the get request conditioned on the key
    switch(key.as<dboard_prop_t>()){
    case DBOARD_PROP_NAME:
        val = std::string("usrp2 dboard (rx unit)");
        return;

    case DBOARD_PROP_SUBDEV:
        val = _dboard_manager->get_rx_subdev(name);
        return;

    case DBOARD_PROP_SUBDEV_NAMES:
        val = _dboard_manager->get_rx_subdev_names();
        return;

    case DBOARD_PROP_USED_SUBDEVS:
        val = _rx_subdevs_in_use;
        return;

    //case DBOARD_PROP_CODEC:
    //    throw std::runtime_error("unhandled prop in usrp2 dboard");
    }
}

void usrp2_impl::rx_dboard_set(const wax::obj &key, const wax::obj &val){
    if (key.as<dboard_prop_t>() == DBOARD_PROP_USED_SUBDEVS){
        _rx_subdevs_in_use = val.as<prop_names_t>();
        update_rx_mux_config(); //if the val is bad, this will throw
        return;
    }

    throw std::runtime_error("Cannot set on usrp2 dboard");
}

/***********************************************************************
 * TX DBoard Properties
 **********************************************************************/
void usrp2_impl::tx_dboard_get(const wax::obj &key_, wax::obj &val){
    wax::obj key; std::string name;
    boost::tie(key, name) = extract_named_prop(key_);

    //handle the get request conditioned on the key
    switch(key.as<dboard_prop_t>()){
    case DBOARD_PROP_NAME:
        val = std::string("usrp2 dboard (tx unit)");
        return;

    case DBOARD_PROP_SUBDEV:
        val = _dboard_manager->get_tx_subdev(name);
        return;

    case DBOARD_PROP_SUBDEV_NAMES:
        val = _dboard_manager->get_tx_subdev_names();
        return;

    case DBOARD_PROP_USED_SUBDEVS:
        val = _tx_subdevs_in_use;
        return;

    //case DBOARD_PROP_CODEC:
    //    throw std::runtime_error("unhandled prop in usrp2 dboard");
    }
}

void usrp2_impl::tx_dboard_set(const wax::obj &key, const wax::obj &val){
    if (key.as<dboard_prop_t>() == DBOARD_PROP_USED_SUBDEVS){
        _tx_subdevs_in_use = val.as<prop_names_t>();
        update_tx_mux_config(); //if the val is bad, this will throw
        return;
    }

    throw std::runtime_error("Cannot set on usrp2 dboard");
}