diff options
Diffstat (limited to 'drivers/media/dvb/ngene/ngene-dvb.c')
| -rw-r--r-- | drivers/media/dvb/ngene/ngene-dvb.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/drivers/media/dvb/ngene/ngene-dvb.c b/drivers/media/dvb/ngene/ngene-dvb.c new file mode 100644 index 00000000000..48f980b21d6 --- /dev/null +++ b/drivers/media/dvb/ngene/ngene-dvb.c @@ -0,0 +1,163 @@ +/* + * 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/smp_lock.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); +} |