1899e97c52
Start moving the dvb specific code to ngene-dvb.c. Note that there is still stuff in ngene-core.c which could potentially be moved out, but it will require considerable reworking of the logic in order to continue to properly support DVB while also being able to support transport streams coming from analog MPEG encoders. Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
173 lines
4.5 KiB
C
173 lines
4.5 KiB
C
/*
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* ngene-dvb.c: nGene PCIe bridge driver - DVB functions
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*
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* Copyright (C) 2005-2007 Micronas
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*
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* Copyright (C) 2008-2009 Ralph Metzler <rjkm@metzlerbros.de>
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* Modifications for new nGene firmware,
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* support for EEPROM-copying,
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* support for new dual DVB-S2 card prototype
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*
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 only, as published by the Free Software Foundation.
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*
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA
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* Or, point your browser to http://www.gnu.org/copyleft/gpl.html
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <linux/poll.h>
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#include <linux/io.h>
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#include <asm/div64.h>
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#include <linux/pci.h>
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#include <linux/smp_lock.h>
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#include <linux/timer.h>
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#include <linux/version.h>
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#include <linux/byteorder/generic.h>
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#include <linux/firmware.h>
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#include <linux/vmalloc.h>
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#include "ngene.h"
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#define COMMAND_TIMEOUT_WORKAROUND
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/****************************************************************************/
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/* COMMAND API interface ****************************************************/
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/****************************************************************************/
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/****************************************************************************/
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/* DVB functions and API interface ******************************************/
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/****************************************************************************/
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static void swap_buffer(u32 *p, u32 len)
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{
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while (len) {
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*p = swab32(*p);
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p++;
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len -= 4;
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}
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}
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void *tsin_exchange(void *priv, void *buf, u32 len, u32 clock, u32 flags)
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{
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struct ngene_channel *chan = priv;
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#ifdef COMMAND_TIMEOUT_WORKAROUND
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if (chan->users > 0)
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#endif
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dvb_dmx_swfilter(&chan->demux, buf, len);
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return NULL;
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}
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u8 fill_ts[188] = { 0x47, 0x1f, 0xff, 0x10 };
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void *tsout_exchange(void *priv, void *buf, u32 len, u32 clock, u32 flags)
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{
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struct ngene_channel *chan = priv;
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struct ngene *dev = chan->dev;
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u32 alen;
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alen = dvb_ringbuffer_avail(&dev->tsout_rbuf);
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alen -= alen % 188;
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if (alen < len)
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FillTSBuffer(buf + alen, len - alen, flags);
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else
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alen = len;
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dvb_ringbuffer_read(&dev->tsout_rbuf, buf, alen);
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if (flags & DF_SWAP32)
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swap_buffer((u32 *)buf, alen);
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wake_up_interruptible(&dev->tsout_rbuf.queue);
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return buf;
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}
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int ngene_start_feed(struct dvb_demux_feed *dvbdmxfeed)
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{
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struct dvb_demux *dvbdmx = dvbdmxfeed->demux;
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struct ngene_channel *chan = dvbdmx->priv;
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if (chan->users == 0) {
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#ifdef COMMAND_TIMEOUT_WORKAROUND
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if (!chan->running)
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#endif
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set_transfer(chan, 1);
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/* msleep(10); */
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}
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return ++chan->users;
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}
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int ngene_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
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{
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struct dvb_demux *dvbdmx = dvbdmxfeed->demux;
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struct ngene_channel *chan = dvbdmx->priv;
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if (--chan->users)
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return chan->users;
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#ifndef COMMAND_TIMEOUT_WORKAROUND
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set_transfer(chan, 0);
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#endif
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return 0;
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}
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int my_dvb_dmx_ts_card_init(struct dvb_demux *dvbdemux, char *id,
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int (*start_feed)(struct dvb_demux_feed *),
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int (*stop_feed)(struct dvb_demux_feed *),
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void *priv)
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{
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dvbdemux->priv = priv;
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dvbdemux->filternum = 256;
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dvbdemux->feednum = 256;
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dvbdemux->start_feed = start_feed;
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dvbdemux->stop_feed = stop_feed;
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dvbdemux->write_to_decoder = NULL;
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dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
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DMX_SECTION_FILTERING |
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DMX_MEMORY_BASED_FILTERING);
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return dvb_dmx_init(dvbdemux);
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}
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int my_dvb_dmxdev_ts_card_init(struct dmxdev *dmxdev,
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struct dvb_demux *dvbdemux,
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struct dmx_frontend *hw_frontend,
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struct dmx_frontend *mem_frontend,
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struct dvb_adapter *dvb_adapter)
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{
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int ret;
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dmxdev->filternum = 256;
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dmxdev->demux = &dvbdemux->dmx;
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dmxdev->capabilities = 0;
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ret = dvb_dmxdev_init(dmxdev, dvb_adapter);
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if (ret < 0)
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return ret;
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hw_frontend->source = DMX_FRONTEND_0;
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dvbdemux->dmx.add_frontend(&dvbdemux->dmx, hw_frontend);
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mem_frontend->source = DMX_MEMORY_FE;
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dvbdemux->dmx.add_frontend(&dvbdemux->dmx, mem_frontend);
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return dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, hw_frontend);
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}
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