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/*
* ngene-dvb.c: nGene PCIe bridge driver - DVB functions
*
* Copyright (C) 2005-2007 Micronas
*
* Copyright (C) 2008-2009 Ralph Metzler <rjkm@metzlerbros.de>
* Modifications for new nGene firmware,
* support for EEPROM-copying,
* support for new dual DVB-S2 card prototype
*
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 only, as published by the Free Software Foundation.
*
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA
* Or, point your browser to http://www.gnu.org/copyleft/gpl.html
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/poll.h>
#include <linux/io.h>
#include <asm/div64.h>
#include <linux/pci.h>
#include <linux/timer.h>
#include <linux/byteorder/generic.h>
#include <linux/firmware.h>
#include <linux/vmalloc.h>
#include "ngene.h"
/****************************************************************************/
/* COMMAND API interface ****************************************************/
/****************************************************************************/
/****************************************************************************/
/* DVB functions and API interface ******************************************/
/****************************************************************************/
static void swap_buffer(u32 *p, u32 len)
{
while (len) {
*p = swab32(*p);
p++;
len -= 4;
}
}
void *tsin_exchange(void *priv, void *buf, u32 len, u32 clock, u32 flags)
{
struct ngene_channel *chan = priv;
if (chan->users > 0)
dvb_dmx_swfilter(&chan->demux, buf, len);
return NULL;
}
u8 fill_ts[188] = { 0x47, 0x1f, 0xff, 0x10 };
void *tsout_exchange(void *priv, void *buf, u32 len, u32 clock, u32 flags)
{
struct ngene_channel *chan = priv;
struct ngene *dev = chan->dev;
u32 alen;
alen = dvb_ringbuffer_avail(&dev->tsout_rbuf);
alen -= alen % 188;
if (alen < len)
FillTSBuffer(buf + alen, len - alen, flags);
else
alen = len;
dvb_ringbuffer_read(&dev->tsout_rbuf, buf, alen);
if (flags & DF_SWAP32)
swap_buffer((u32 *)buf, alen);
wake_up_interruptible(&dev->tsout_rbuf.queue);
return buf;
}
int ngene_start_feed(struct dvb_demux_feed *dvbdmxfeed)
{
struct dvb_demux *dvbdmx = dvbdmxfeed->demux;
struct ngene_channel *chan = dvbdmx->priv;
if (chan->users == 0) {
if (!chan->dev->cmd_timeout_workaround || !chan->running)
set_transfer(chan, 1);
}
return ++chan->users;
}
int ngene_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
{
struct dvb_demux *dvbdmx = dvbdmxfeed->demux;
struct ngene_channel *chan = dvbdmx->priv;
if (--chan->users)
return chan->users;
if (!chan->dev->cmd_timeout_workaround)
set_transfer(chan, 0);
return 0;
}
int my_dvb_dmx_ts_card_init(struct dvb_demux *dvbdemux, char *id,
int (*start_feed)(struct dvb_demux_feed *),
int (*stop_feed)(struct dvb_demux_feed *),
void *priv)
{
dvbdemux->priv = priv;
dvbdemux->filternum = 256;
dvbdemux->feednum = 256;
dvbdemux->start_feed = start_feed;
dvbdemux->stop_feed = stop_feed;
dvbdemux->write_to_decoder = NULL;
dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
DMX_SECTION_FILTERING |
DMX_MEMORY_BASED_FILTERING);
return dvb_dmx_init(dvbdemux);
}
int my_dvb_dmxdev_ts_card_init(struct dmxdev *dmxdev,
struct dvb_demux *dvbdemux,
struct dmx_frontend *hw_frontend,
struct dmx_frontend *mem_frontend,
struct dvb_adapter *dvb_adapter)
{
int ret;
dmxdev->filternum = 256;
dmxdev->demux = &dvbdemux->dmx;
dmxdev->capabilities = 0;
ret = dvb_dmxdev_init(dmxdev, dvb_adapter);
if (ret < 0)
return ret;
hw_frontend->source = DMX_FRONTEND_0;
dvbdemux->dmx.add_frontend(&dvbdemux->dmx, hw_frontend);
mem_frontend->source = DMX_MEMORY_FE;
dvbdemux->dmx.add_frontend(&dvbdemux->dmx, mem_frontend);
return dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, hw_frontend);
}
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