Release 4.11 drivers/media/pci/ngene/ngene-dvb.c
/*
* 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.
*
* To obtain the license, 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 ****************************************************/
/****************************************************************************/
static ssize_t ts_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
struct dvb_device *dvbdev = file->private_data;
struct ngene_channel *chan = dvbdev->priv;
struct ngene *dev = chan->dev;
if (wait_event_interruptible(dev->tsout_rbuf.queue,
dvb_ringbuffer_free
(&dev->tsout_rbuf) >= count) < 0)
return 0;
dvb_ringbuffer_write_user(&dev->tsout_rbuf, buf, count);
return count;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ralph Metzler | 90 | 97.83% | 1 | 33.33% |
| Mauro Carvalho Chehab | 1 | 1.09% | 1 | 33.33% |
| Hans Verkuil | 1 | 1.09% | 1 | 33.33% |
| Total | 92 | 100.00% | 3 | 100.00% |
static ssize_t ts_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
struct dvb_device *dvbdev = file->private_data;
struct ngene_channel *chan = dvbdev->priv;
struct ngene *dev = chan->dev;
int left, avail;
left = count;
while (left) {
if (wait_event_interruptible(
dev->tsin_rbuf.queue,
dvb_ringbuffer_avail(&dev->tsin_rbuf) > 0) < 0)
return -EAGAIN;
avail = dvb_ringbuffer_avail(&dev->tsin_rbuf);
if (avail > left)
avail = left;
dvb_ringbuffer_read_user(&dev->tsin_rbuf, buf, avail);
left -= avail;
buf += avail;
}
return count;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ralph Metzler | 134 | 99.26% | 1 | 50.00% |
| Hans Verkuil | 1 | 0.74% | 1 | 50.00% |
| Total | 135 | 100.00% | 2 | 100.00% |
static const struct file_operations ci_fops = {
.owner = THIS_MODULE,
.read = ts_read,
.write = ts_write,
.open = dvb_generic_open,
.release = dvb_generic_release,
};
struct dvb_device ngene_dvbdev_ci = {
.readers = -1,
.writers = -1,
.users = -1,
.fops = &ci_fops,
};
/****************************************************************************/
/* DVB functions and API interface ******************************************/
/****************************************************************************/
static void swap_buffer(u32 *p, u32 len)
{
while (len) {
*p = swab32(*p);
p++;
len -= 4;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Devin Heitmueller | 35 | 100.00% | 1 | 100.00% |
| Total | 35 | 100.00% | 1 | 100.00% |
/* start of filler packet */
static u8 fill_ts[] = { 0x47, 0x1f, 0xff, 0x10, TS_FILLER };
/* #define DEBUG_CI_XFER */
#ifdef DEBUG_CI_XFER
static u32 ok;
static u32 overflow;
static u32 stripped;
#endif
void *tsin_exchange(void *priv, void *buf, u32 len, u32 clock, u32 flags)
{
struct ngene_channel *chan = priv;
struct ngene *dev = chan->dev;
if (flags & DF_SWAP32)
swap_buffer(buf, len);
if (dev->ci.en && chan->number == 2) {
while (len >= 188) {
if (memcmp(buf, fill_ts, sizeof fill_ts) != 0) {
if (dvb_ringbuffer_free(&dev->tsin_rbuf) >= 188) {
dvb_ringbuffer_write(&dev->tsin_rbuf, buf, 188);
wake_up(&dev->tsin_rbuf.queue);
#ifdef DEBUG_CI_XFER
ok++;
#endif
}
#ifdef DEBUG_CI_XFER
else
overflow++;
#endif
}
#ifdef DEBUG_CI_XFER
else
stripped++;
if (ok % 100 == 0 && overflow)
printk(KERN_WARNING "%s: ok %u overflow %u dropped %u\n", __func__, ok, overflow, stripped);
#endif
buf += 188;
len -= 188;
}
return NULL;
}
if (chan->users > 0)
dvb_dmx_swfilter(&chan->demux, buf, len);
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Oliver Endriss | 97 | 45.75% | 2 | 50.00% |
| Ralph Metzler | 65 | 30.66% | 1 | 25.00% |
| Devin Heitmueller | 50 | 23.58% | 1 | 25.00% |
| Total | 212 | 100.00% | 4 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Devin Heitmueller | 124 | 100.00% | 1 | 100.00% |
| Total | 124 | 100.00% | 1 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Devin Heitmueller | 58 | 89.23% | 1 | 50.00% |
| Oliver Endriss | 7 | 10.77% | 1 | 50.00% |
| Total | 65 | 100.00% | 2 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Devin Heitmueller | 50 | 84.75% | 1 | 50.00% |
| Oliver Endriss | 9 | 15.25% | 1 | 50.00% |
| Total | 59 | 100.00% | 2 | 100.00% |
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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Devin Heitmueller | 96 | 100.00% | 1 | 100.00% |
| Total | 96 | 100.00% | 1 | 100.00% |
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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Devin Heitmueller | 127 | 100.00% | 1 | 100.00% |
| Total | 127 | 100.00% | 1 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Devin Heitmueller | 585 | 53.67% | 1 | 12.50% |
| Ralph Metzler | 352 | 32.29% | 1 | 12.50% |
| Oliver Endriss | 149 | 13.67% | 3 | 37.50% |
| Hans Verkuil | 2 | 0.18% | 1 | 12.50% |
| Mauro Carvalho Chehab | 1 | 0.09% | 1 | 12.50% |
| Sakari Ailus | 1 | 0.09% | 1 | 12.50% |
| Total | 1090 | 100.00% | 8 | 100.00% |
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