drivers/media/dvb/ngene/ngene-dvb.c

   1 /*
   2  * ngene-dvb.c: nGene PCIe bridge driver - DVB functions
   3  *
   4  * Copyright (C) 2005-2007 Micronas
   5  *
   6  * Copyright (C) 2008-2009 Ralph Metzler <rjkm@metzlerbros.de>
   7  *                         Modifications for new nGene firmware,
   8  *                         support for EEPROM-copying,
   9  *                         support for new dual DVB-S2 card prototype
  10  *
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * version 2 only, as published by the Free Software Foundation.
  15  *
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  26  * 02110-1301, USA
  27  * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
  28  */
  29
  30 #include <linux/module.h>
  31 #include <linux/init.h>
  32 #include <linux/delay.h>
  33 #include <linux/slab.h>
  34 #include <linux/poll.h>
  35 #include <linux/io.h>
  36 #include <asm/div64.h>
  37 #include <linux/pci.h>
  38 #include <linux/smp_lock.h>
  39 #include <linux/timer.h>
  40 #include <linux/version.h>
  41 #include <linux/byteorder/generic.h>
  42 #include <linux/firmware.h>
  43 #include <linux/vmalloc.h>
  44
  45 #include "ngene.h"
  46
  47 #define COMMAND_TIMEOUT_WORKAROUND
  48
  49
  50 /****************************************************************************/
  51 /* COMMAND API interface ****************************************************/
  52 /****************************************************************************/
  53
  54 /****************************************************************************/
  55 /* DVB functions and API interface ******************************************/
  56 /****************************************************************************/
  57
  58 static void swap_buffer(u32 *p, u32 len)
  59 {
  60         while (len) {
  61                 *p = swab32(*p);
  62                 p++;
  63                 len -= 4;
  64         }
  65 }
  66
  67 void *tsin_exchange(void *priv, void *buf, u32 len, u32 clock, u32 flags)
  68 {
  69         struct ngene_channel *chan = priv;
  70
  71
  72 #ifdef COMMAND_TIMEOUT_WORKAROUND
  73         if (chan->users > 0)
  74 #endif
  75                 dvb_dmx_swfilter(&chan->demux, buf, len);
  76         return NULL;
  77 }
  78
  79 u8 fill_ts[188] = { 0x47, 0x1f, 0xff, 0x10 };
  80
  81 void *tsout_exchange(void *priv, void *buf, u32 len, u32 clock, u32 flags)
  82 {
  83         struct ngene_channel *chan = priv;
  84         struct ngene *dev = chan->dev;
  85         u32 alen;
  86
  87         alen = dvb_ringbuffer_avail(&dev->tsout_rbuf);
  88         alen -= alen % 188;
  89
  90         if (alen < len)
  91                 FillTSBuffer(buf + alen, len - alen, flags);
  92         else
  93                 alen = len;
  94         dvb_ringbuffer_read(&dev->tsout_rbuf, buf, alen);
  95         if (flags & DF_SWAP32)
  96                 swap_buffer((u32 *)buf, alen);
  97         wake_up_interruptible(&dev->tsout_rbuf.queue);
  98         return buf;
  99 }
 100
 101
 102
 103 int ngene_start_feed(struct dvb_demux_feed *dvbdmxfeed)
 104 {
 105         struct dvb_demux *dvbdmx = dvbdmxfeed->demux;
 106         struct ngene_channel *chan = dvbdmx->priv;
 107
 108         if (chan->users == 0) {
 109 #ifdef COMMAND_TIMEOUT_WORKAROUND
 110                 if (!chan->running)
 111 #endif
 112                         set_transfer(chan, 1);
 113                 /* msleep(10); */
 114         }
 115
 116         return ++chan->users;
 117 }
 118
 119 int ngene_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
 120 {
 121         struct dvb_demux *dvbdmx = dvbdmxfeed->demux;
 122         struct ngene_channel *chan = dvbdmx->priv;
 123
 124         if (--chan->users)
 125                 return chan->users;
 126
 127 #ifndef COMMAND_TIMEOUT_WORKAROUND
 128         set_transfer(chan, 0);
 129 #endif
 130
 131         return 0;
 132 }
 133
 134 int my_dvb_dmx_ts_card_init(struct dvb_demux *dvbdemux, char *id,
 135                             int (*start_feed)(struct dvb_demux_feed *),
 136                             int (*stop_feed)(struct dvb_demux_feed *),
 137                             void *priv)
 138 {
 139         dvbdemux->priv = priv;
 140
 141         dvbdemux->filternum = 256;
 142         dvbdemux->feednum = 256;
 143         dvbdemux->start_feed = start_feed;
 144         dvbdemux->stop_feed = stop_feed;
 145         dvbdemux->write_to_decoder = NULL;
 146         dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
 147                                       DMX_SECTION_FILTERING |
 148                                       DMX_MEMORY_BASED_FILTERING);
 149         return dvb_dmx_init(dvbdemux);
 150 }
 151
 152 int my_dvb_dmxdev_ts_card_init(struct dmxdev *dmxdev,
 153                                struct dvb_demux *dvbdemux,
 154                                struct dmx_frontend *hw_frontend,
 155                                struct dmx_frontend *mem_frontend,
 156                                struct dvb_adapter *dvb_adapter)
 157 {
 158         int ret;
 159
 160         dmxdev->filternum = 256;
 161         dmxdev->demux = &dvbdemux->dmx;
 162         dmxdev->capabilities = 0;
 163         ret = dvb_dmxdev_init(dmxdev, dvb_adapter);
 164         if (ret < 0)
 165                 return ret;
 166
 167         hw_frontend->source = DMX_FRONTEND_0;
 168         dvbdemux->dmx.add_frontend(&dvbdemux->dmx, hw_frontend);
 169         mem_frontend->source = DMX_MEMORY_FE;
 170         dvbdemux->dmx.add_frontend(&dvbdemux->dmx, mem_frontend);
 171         return dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, hw_frontend);
 172 }