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/*
* dvb-dibusb-dvb.c is part of the driver for mobile USB Budget DVB-T devices
* based on reference design made by DiBcom (http://www.dibcom.fr/)
*
* Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de)
*
* see dvb-dibusb-core.c for more copyright details.
*
* This file contains functions for initializing and handling the
* linux-dvb API.
*/
#include "dvb-dibusb.h"
#include <linux/usb.h>
#include <linux/version.h>
/*
* MPEG2 TS DVB stuff
*/
void dibusb_urb_complete(struct urb *urb, struct pt_regs *ptregs)
{
struct usb_dibusb *dib = urb->context;
int ret;
deb_ts("urb complete feedcount: %d, status: %d, length: %d\n",dib->feedcount,urb->status,
urb->actual_length);
switch (urb->status) {
case 0: /* success */
case -ETIMEDOUT: /* NAK */
break;
case -ECONNRESET: /* unlink */
case -ENOENT:
case -ESHUTDOWN:
return;
default: /* error */
warn("urb completition error %d.", urb->status);
}
if (dib->feedcount > 0) {
deb_ts("URB return len: %d\n",urb->actual_length);
if (urb->actual_length % 188)
deb_ts("TS Packets: %d, %d\n", urb->actual_length/188,urb->actual_length % 188);
/* Francois recommends to drop not full-filled packets, even if they may
* contain valid TS packets, at least for USB1.1
*
* if (urb->actual_length == dib->dibdev->parm->default_size && dib->dvb_is_ready) */
if (dib->init_state & DIBUSB_STATE_DVB)
dvb_dmx_swfilter(&dib->demux, (u8*) urb->transfer_buffer,urb->actual_length);
else
deb_ts("URB dropped because of the "
"actual_length or !dvb_is_ready (%d).\n",dib->init_state & DIBUSB_STATE_DVB);
} else
deb_ts("URB dropped because of feedcount.\n");
ret = usb_submit_urb(urb,GFP_ATOMIC);
deb_ts("urb resubmitted, (%d)\n",ret);
}
static int dibusb_ctrl_feed(struct usb_dibusb *dib, int pid, int onoff)
{
int newfeedcount = dib->feedcount + (onoff ? 1 : -1);
/*
* stop feed before setting a new pid and firmware_bug
* or if there will be no pid anymore
*/
if ((dib->dibdev->parm->firmware_bug && dib->feedcount) || newfeedcount == 0) {
deb_ts("stop feeding\n");
if (dib->xfer_ops.fifo_ctrl != NULL) {
if (dib->xfer_ops.fifo_ctrl(dib->fe,0)) {
err("error while inhibiting fifo.");
return -ENODEV;
}
} else {
err("fifo_ctrl is not set.");
return -ENODEV;
}
}
dib->feedcount = newfeedcount;
if (dib->pid_parse) {
if (dib->xfer_ops.pid_ctrl != NULL) {
if (dib->xfer_ops.pid_ctrl(dib->fe,pid,onoff) < 0) {
err("no free pid in list.");
return -ENODEV;
}
} else {
err("no pid ctrl callback.");
return -ENODEV;
}
}
/*
* start the feed, either if there is the firmware bug or
* if this was the first pid to set and there is still a pid for
* reception.
*/
if ((dib->dibdev->parm->firmware_bug || dib->feedcount == onoff) &&
dib->feedcount > 0) {
deb_ts("controlling pid parser\n");
if (dib->xfer_ops.pid_parse != NULL) {
if (dib->xfer_ops.pid_parse(dib->fe,dib->pid_parse) < 0) {
err("could not handle pid_parser");
}
}
deb_ts("start feeding\n");
if (dib->xfer_ops.fifo_ctrl != NULL) {
if (dib->xfer_ops.fifo_ctrl(dib->fe,1)) {
err("error while enabling fifo.");
return -ENODEV;
}
} else {
err("fifo_ctrl is not set.");
return -ENODEV;
}
dibusb_streaming(dib,1);
}
return 0;
}
static int dibusb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
{
struct usb_dibusb *dib = dvbdmxfeed->demux->priv;
deb_ts("start pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid,dvbdmxfeed->type);
dvbdmxfeed->priv = dib;
return dibusb_ctrl_feed(dib,dvbdmxfeed->pid,1);
}
static int dibusb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
{
struct usb_dibusb *dib = (struct usb_dibusb *) dvbdmxfeed->priv;
if (dib == NULL) {
err("dib in dmxfeed->priv was NULL");
return -EINVAL;
}
deb_ts("stop pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid, dvbdmxfeed->type);
return dibusb_ctrl_feed(dib,dvbdmxfeed->pid,0);
}
int dibusb_dvb_init(struct usb_dibusb *dib)
{
int ret;
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,4)
if ((ret = dvb_register_adapter(&dib->adapter, DRIVER_DESC)) < 0) {
#else
if ((ret = dvb_register_adapter(&dib->adapter, DRIVER_DESC ,
THIS_MODULE)) < 0) {
#endif
deb_info("dvb_register_adapter failed: error %d", ret);
goto err;
}
dib->adapter->priv = dib;
/* i2c is done in dibusb_i2c_init */
dib->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING;
dib->demux.priv = (void *)dib;
/* get pidcount from demod */
dib->demux.feednum = dib->demux.filternum = 255;
dib->demux.start_feed = dibusb_start_feed;
dib->demux.stop_feed = dibusb_stop_feed;
dib->demux.write_to_decoder = NULL;
if ((ret = dvb_dmx_init(&dib->demux)) < 0) {
err("dvb_dmx_init failed: error %d",ret);
goto err_dmx;
}
dib->dmxdev.filternum = dib->demux.filternum;
dib->dmxdev.demux = &dib->demux.dmx;
dib->dmxdev.capabilities = 0;
if ((ret = dvb_dmxdev_init(&dib->dmxdev, dib->adapter)) < 0) {
err("dvb_dmxdev_init failed: error %d",ret);
goto err_dmx_dev;
}
dvb_net_init(dib->adapter, &dib->dvb_net, &dib->demux.dmx);
goto success;
err_dmx_dev:
dvb_dmx_release(&dib->demux);
err_dmx:
dvb_unregister_adapter(dib->adapter);
err:
return ret;
success:
dib->init_state |= DIBUSB_STATE_DVB;
return 0;
}
int dibusb_dvb_exit(struct usb_dibusb *dib)
{
dib->init_state &= ~DIBUSB_STATE_DVB;
deb_info("unregistering DVB part\n");
dvb_net_release(&dib->dvb_net);
dib->demux.dmx.close(&dib->demux.dmx);
dvb_dmxdev_release(&dib->dmxdev);
dvb_dmx_release(&dib->demux);
dvb_unregister_adapter(dib->adapter);
return 0;
}
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