au6610.c

Go to the documentation of this file.

/*
 * DVB USB Linux driver for Alcor Micro AU6610 DVB-T USB2.0.
 *
 * Copyright (C) 2006 Antti Palosaari <[email protected]>
 *
 *    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 "au6610.h"
#include "zl10353.h"
#include "qt1010.h"

DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

static int au6610_usb_msg(struct dvb_usb_device *d, u8 operation, u8 addr,
              u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
{
    int ret;
    u16 index;
    u8 *usb_buf;

    /*
     * allocate enough for all known requests,
     * read returns 5 and write 6 bytes
     */
    usb_buf = kmalloc(6, GFP_KERNEL);
    if (!usb_buf)
        return -ENOMEM;

    switch (wlen) {
    case 1:
        index = wbuf[0] << 8;
        break;
    case 2:
        index = wbuf[0] << 8;
        index += wbuf[1];
        break;
    default:
        dev_err(&d->udev->dev, "%s: wlen=%d, aborting\n",
                KBUILD_MODNAME, wlen);
        ret = -EINVAL;
        goto error;
    }

    ret = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), operation,
                  USB_TYPE_VENDOR|USB_DIR_IN, addr << 1, index,
                  usb_buf, 6, AU6610_USB_TIMEOUT);

    dvb_usb_dbg_usb_control_msg(d->udev, operation,
            (USB_TYPE_VENDOR|USB_DIR_IN), addr << 1, index,
            usb_buf, 6);

    if (ret < 0)
        goto error;

    switch (operation) {
    case AU6610_REQ_I2C_READ:
    case AU6610_REQ_USB_READ:
        /* requested value is always 5th byte in buffer */
        rbuf[0] = usb_buf[4];
    }
error:
    kfree(usb_buf);
    return ret;
}

static int au6610_i2c_msg(struct dvb_usb_device *d, u8 addr,
              u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
{
    u8 request;
    u8 wo = (rbuf == NULL || rlen == 0); /* write-only */

    if (wo) {
        request = AU6610_REQ_I2C_WRITE;
    } else { /* rw */
        request = AU6610_REQ_I2C_READ;
    }

    return au6610_usb_msg(d, request, addr, wbuf, wlen, rbuf, rlen);
}


/* I2C */
static int au6610_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
               int num)
{
    struct dvb_usb_device *d = i2c_get_adapdata(adap);
    int i;

    if (num > 2)
        return -EINVAL;

    if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
        return -EAGAIN;

    for (i = 0; i < num; i++) {
        /* write/read request */
        if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
            if (au6610_i2c_msg(d, msg[i].addr, msg[i].buf,
                       msg[i].len, msg[i+1].buf,
                       msg[i+1].len) < 0)
                break;
            i++;
        } else if (au6610_i2c_msg(d, msg[i].addr, msg[i].buf,
                           msg[i].len, NULL, 0) < 0)
                break;
    }

    mutex_unlock(&d->i2c_mutex);
    return i;
}


static u32 au6610_i2c_func(struct i2c_adapter *adapter)
{
    return I2C_FUNC_I2C;
}

static struct i2c_algorithm au6610_i2c_algo = {
    .master_xfer   = au6610_i2c_xfer,
    .functionality = au6610_i2c_func,
};

/* Callbacks for DVB USB */
static struct zl10353_config au6610_zl10353_config = {
    .demod_address = 0x0f,
    .no_tuner = 1,
    .parallel_ts = 1,
};

static int au6610_zl10353_frontend_attach(struct dvb_usb_adapter *adap)
{
    adap->fe[0] = dvb_attach(zl10353_attach, &au6610_zl10353_config,
            &adap_to_d(adap)->i2c_adap);
    if (adap->fe[0] == NULL)
        return -ENODEV;

    return 0;
}

static struct qt1010_config au6610_qt1010_config = {
    .i2c_address = 0x62
};

static int au6610_qt1010_tuner_attach(struct dvb_usb_adapter *adap)
{
    return dvb_attach(qt1010_attach, adap->fe[0],
            &adap_to_d(adap)->i2c_adap,
            &au6610_qt1010_config) == NULL ? -ENODEV : 0;
}

static int au6610_init(struct dvb_usb_device *d)
{
    /* TODO: this functionality belongs likely to the streaming control */
    /* bInterfaceNumber 0, bAlternateSetting 5 */
    return usb_set_interface(d->udev, 0, 5);
}

static struct dvb_usb_device_properties au6610_props = {
    .driver_name = KBUILD_MODNAME,
    .owner = THIS_MODULE,
    .adapter_nr = adapter_nr,

    .i2c_algo = &au6610_i2c_algo,
    .frontend_attach = au6610_zl10353_frontend_attach,
    .tuner_attach = au6610_qt1010_tuner_attach,
    .init = au6610_init,

    .num_adapters = 1,
    .adapter = {
        {
            .stream = DVB_USB_STREAM_ISOC(0x82, 5, 40, 942, 1),
        },
    },
};

static const struct usb_device_id au6610_id_table[] = {
    { DVB_USB_DEVICE(USB_VID_ALCOR_MICRO, USB_PID_SIGMATEK_DVB_110,
        &au6610_props, "Sigmatek DVB-110", NULL) },
    { }
};
MODULE_DEVICE_TABLE(usb, au6610_id_table);

static struct usb_driver au6610_driver = {
    .name = KBUILD_MODNAME,
    .id_table = au6610_id_table,
    .probe = dvb_usbv2_probe,
    .disconnect = dvb_usbv2_disconnect,
    .suspend = dvb_usbv2_suspend,
    .resume = dvb_usbv2_resume,
    .reset_resume = dvb_usbv2_reset_resume,
    .no_dynamic_id = 1,
    .soft_unbind = 1,
};

module_usb_driver(au6610_driver);

MODULE_AUTHOR("Antti Palosaari <[email protected]>");
MODULE_DESCRIPTION("Driver for Alcor Micro AU6610 DVB-T USB2.0");
MODULE_VERSION("0.1");
MODULE_LICENSE("GPL");