linux-imx

/*

    tda18271-common.c - driver for the Philips / NXP TDA18271 silicon tuner

​

    Copyright (C) 2007, 2008 Michael Krufky <mkrufky@linuxtv.org>

​

    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 2 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, write to the Free Software

    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

​

#include "tda18271-priv.h"

​

static int tda18271_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)

{

    struct tda18271_priv *priv = fe->tuner_priv;

    enum tda18271_i2c_gate gate;

    int ret = 0;

​

    switch (priv->gate) {

    case TDA18271_GATE_DIGITAL:

    case TDA18271_GATE_ANALOG:

        gate = priv->gate;

        break;

    case TDA18271_GATE_AUTO:

    default:

        switch (priv->mode) {

        case TDA18271_DIGITAL:

            gate = TDA18271_GATE_DIGITAL;

            break;

        case TDA18271_ANALOG:

        default:

            gate = TDA18271_GATE_ANALOG;

            break;

        }

    }

​

    switch (gate) {

    case TDA18271_GATE_ANALOG:

        if (fe->ops.analog_ops.i2c_gate_ctrl)

            ret = fe->ops.analog_ops.i2c_gate_ctrl(fe, enable);

        break;

    case TDA18271_GATE_DIGITAL:

        if (fe->ops.i2c_gate_ctrl)

            ret = fe->ops.i2c_gate_ctrl(fe, enable);

        break;

    default:

        ret = -EINVAL;

        break;

    }

​

    return ret;

};

​