diff options
Diffstat (limited to 'drivers/media/dvb/dvb-usb/dvb-usb-dvb.c')
| -rw-r--r-- | drivers/media/dvb/dvb-usb/dvb-usb-dvb.c | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/drivers/media/dvb/dvb-usb/dvb-usb-dvb.c b/drivers/media/dvb/dvb-usb/dvb-usb-dvb.c new file mode 100644 index 0000000..3491ff4 --- /dev/null +++ b/drivers/media/dvb/dvb-usb/dvb-usb-dvb.c @@ -0,0 +1,210 @@ +/* dvb-usb-dvb.c is part of the DVB USB library. + * + * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de) + * see dvb-usb-init.c for copyright information. + * + * This file contains functions for initializing and handling the + * linux-dvb API. + */ +#include "dvb-usb-common.h" + +static int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff) +{ + struct dvb_usb_device *d = dvbdmxfeed->demux->priv; + int newfeedcount,ret; + + if (d == NULL) + return -ENODEV; + + newfeedcount = d->feedcount + (onoff ? 1 : -1); + + /* + * stop feed before setting a new pid if there will be no pid anymore + */ + if (newfeedcount == 0) { + deb_ts("stop feeding\n"); + + if (d->props.streaming_ctrl != NULL) + if ((ret = d->props.streaming_ctrl(d,0))) + err("error while stopping stream."); + + dvb_usb_urb_kill(d); + } + + d->feedcount = newfeedcount; + + /* activate the pid on the device specific pid_filter */ + deb_ts("setting pid: %5d %04x at index %d '%s'\n",dvbdmxfeed->pid,dvbdmxfeed->pid,dvbdmxfeed->index,onoff ? "on" : "off"); + if (d->props.caps & DVB_USB_HAS_PID_FILTER && + d->pid_filtering && + d->props.pid_filter != NULL) + d->props.pid_filter(d,dvbdmxfeed->index,dvbdmxfeed->pid,onoff); + + /* start the feed if this was the first feed and there is still a feed + * for reception. + */ + if (d->feedcount == onoff && d->feedcount > 0) { + + deb_ts("controlling pid parser\n"); + if (d->props.caps & DVB_USB_HAS_PID_FILTER && + d->props.caps & DVB_USB_PID_FILTER_CAN_BE_TURNED_OFF && + d->props.pid_filter_ctrl != NULL) + if (d->props.pid_filter_ctrl(d,d->pid_filtering) < 0) + err("could not handle pid_parser"); + + deb_ts("start feeding\n"); + if (d->props.streaming_ctrl != NULL) + if (d->props.streaming_ctrl(d,1)) { + err("error while enabling fifo."); + return -ENODEV; + } + + dvb_usb_urb_submit(d); + } + return 0; +} + +static int dvb_usb_start_feed(struct dvb_demux_feed *dvbdmxfeed) +{ + deb_ts("start pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid,dvbdmxfeed->type); + return dvb_usb_ctrl_feed(dvbdmxfeed,1); +} + +static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed) +{ + deb_ts("stop pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid, dvbdmxfeed->type); + return dvb_usb_ctrl_feed(dvbdmxfeed,0); +} + +int dvb_usb_dvb_init(struct dvb_usb_device *d) +{ + int ret; + + if ((ret = dvb_register_adapter(&d->dvb_adap, d->desc->name, + d->owner)) < 0) { + deb_info("dvb_register_adapter failed: error %d", ret); + goto err; + } + d->dvb_adap.priv = d; + + if (d->props.read_mac_address) { + if (d->props.read_mac_address(d,d->dvb_adap.proposed_mac) == 0) + info("MAC address: %02x:%02x:%02x:%02x:%02x:%02x",d->dvb_adap.proposed_mac[0], + d->dvb_adap.proposed_mac[1],d->dvb_adap.proposed_mac[2], + d->dvb_adap.proposed_mac[3],d->dvb_adap.proposed_mac[4], + d->dvb_adap.proposed_mac[5]); + else + err("MAC address reading failed."); + } + + + d->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING; + d->demux.priv = d; + + d->demux.feednum = d->demux.filternum = d->max_feed_count; + d->demux.start_feed = dvb_usb_start_feed; + d->demux.stop_feed = dvb_usb_stop_feed; + d->demux.write_to_decoder = NULL; + if ((ret = dvb_dmx_init(&d->demux)) < 0) { + err("dvb_dmx_init failed: error %d",ret); + goto err_dmx; + } + + d->dmxdev.filternum = d->demux.filternum; + d->dmxdev.demux = &d->demux.dmx; + d->dmxdev.capabilities = 0; + if ((ret = dvb_dmxdev_init(&d->dmxdev, &d->dvb_adap)) < 0) { + err("dvb_dmxdev_init failed: error %d",ret); + goto err_dmx_dev; + } + + dvb_net_init(&d->dvb_adap, &d->dvb_net, &d->demux.dmx); + + goto success; +err_dmx_dev: + dvb_dmx_release(&d->demux); +err_dmx: + dvb_unregister_adapter(&d->dvb_adap); +err: + return ret; +success: + d->state |= DVB_USB_STATE_DVB; + return 0; +} + +int dvb_usb_dvb_exit(struct dvb_usb_device *d) +{ + if (d->state & DVB_USB_STATE_DVB) { + deb_info("unregistering DVB part\n"); + dvb_net_release(&d->dvb_net); + d->demux.dmx.close(&d->demux.dmx); + dvb_dmxdev_release(&d->dmxdev); + dvb_dmx_release(&d->demux); + dvb_unregister_adapter(&d->dvb_adap); + d->state &= ~DVB_USB_STATE_DVB; + } + return 0; +} + +static int dvb_usb_fe_wakeup(struct dvb_frontend *fe) +{ + struct dvb_usb_device *d = fe->dvb->priv; + + if (d->props.power_ctrl) + d->props.power_ctrl(d,1); + + if (d->fe_init) + d->fe_init(fe); + + return 0; +} + +static int dvb_usb_fe_sleep(struct dvb_frontend *fe) +{ + struct dvb_usb_device *d = fe->dvb->priv; + + if (d->fe_sleep) + d->fe_sleep(fe); + + if (d->props.power_ctrl) + d->props.power_ctrl(d,0); + + return 0; +} + +int dvb_usb_fe_init(struct dvb_usb_device* d) +{ + if (d->props.frontend_attach == NULL) { + err("strange '%s' doesn't want to attach a frontend.",d->desc->name); + return 0; + } + + d->props.frontend_attach(d); + + /* re-assign sleep and wakeup functions */ + if (d->fe != NULL) { + d->fe_init = d->fe->ops->init; d->fe->ops->init = dvb_usb_fe_wakeup; + d->fe_sleep = d->fe->ops->sleep; d->fe->ops->sleep = dvb_usb_fe_sleep; + + if (dvb_register_frontend(&d->dvb_adap, d->fe)) { + err("Frontend registration failed."); + if (d->fe->ops->release) + d->fe->ops->release(d->fe); + d->fe = NULL; + return -ENODEV; + } + } else + err("no frontend was attached by '%s'",d->desc->name); + + if (d->props.tuner_attach != NULL) + d->props.tuner_attach(d); + + return 0; +} + +int dvb_usb_fe_exit(struct dvb_usb_device *d) +{ + if (d->fe != NULL) + dvb_unregister_frontend(d->fe); + return 0; +} |
