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 | 207 |
1 files changed, 207 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..ce8cd0c --- /dev/null +++ b/drivers/media/dvb/dvb-usb/dvb-usb-dvb.c @@ -0,0 +1,207 @@ +/* dvb-usb-dvb.c is part of the DVB USB library. + * + * Copyright (C) 2004-6 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" + +/* does the complete input transfer handling */ +static int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff) +{ + struct dvb_usb_adapter *adap = dvbdmxfeed->demux->priv; + int newfeedcount,ret; + + if (adap == NULL) + return -ENODEV; + + newfeedcount = adap->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"); + usb_urb_kill(&adap->stream); + + if (adap->props.streaming_ctrl != NULL) + if ((ret = adap->props.streaming_ctrl(adap,0))) + err("error while stopping stream."); + } + + adap->feedcount = newfeedcount; + + /* activate the pid on the device specific pid_filter */ + deb_ts("setting pid (%s): %5d %04x at index %d '%s'\n",adap->pid_filtering ? + "yes" : "no", dvbdmxfeed->pid,dvbdmxfeed->pid,dvbdmxfeed->index,onoff ? + "on" : "off"); + if (adap->props.caps & DVB_USB_ADAP_HAS_PID_FILTER && + adap->pid_filtering && + adap->props.pid_filter != NULL) + adap->props.pid_filter(adap, dvbdmxfeed->index, dvbdmxfeed->pid,onoff); + + /* start the feed if this was the first feed and there is still a feed + * for reception. + */ + if (adap->feedcount == onoff && adap->feedcount > 0) { + deb_ts("submitting all URBs\n"); + usb_urb_submit(&adap->stream); + + deb_ts("controlling pid parser\n"); + if (adap->props.caps & DVB_USB_ADAP_HAS_PID_FILTER && + adap->props.caps & DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF && + adap->props.pid_filter_ctrl != NULL) + if (adap->props.pid_filter_ctrl(adap,adap->pid_filtering) < 0) + err("could not handle pid_parser"); + + deb_ts("start feeding\n"); + if (adap->props.streaming_ctrl != NULL) + if (adap->props.streaming_ctrl(adap,1)) { + err("error while enabling fifo."); + return -ENODEV; + } + + } + 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_adapter_dvb_init(struct dvb_usb_adapter *adap, short *adapter_nums) +{ + int ret = dvb_register_adapter(&adap->dvb_adap, adap->dev->desc->name, + adap->dev->owner, &adap->dev->udev->dev, + adapter_nums); + + if (ret < 0) { + deb_info("dvb_register_adapter failed: error %d", ret); + goto err; + } + adap->dvb_adap.priv = adap; + + if (adap->dev->props.read_mac_address) { + if (adap->dev->props.read_mac_address(adap->dev,adap->dvb_adap.proposed_mac) == 0) + info("MAC address: %02x:%02x:%02x:%02x:%02x:%02x",adap->dvb_adap.proposed_mac[0], + adap->dvb_adap.proposed_mac[1], adap->dvb_adap.proposed_mac[2], + adap->dvb_adap.proposed_mac[3], adap->dvb_adap.proposed_mac[4], + adap->dvb_adap.proposed_mac[5]); + else + err("MAC address reading failed."); + } + + + adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING; + adap->demux.priv = adap; + + adap->demux.feednum = adap->demux.filternum = adap->max_feed_count; + adap->demux.start_feed = dvb_usb_start_feed; + adap->demux.stop_feed = dvb_usb_stop_feed; + adap->demux.write_to_decoder = NULL; + if ((ret = dvb_dmx_init(&adap->demux)) < 0) { + err("dvb_dmx_init failed: error %d",ret); + goto err_dmx; + } + + adap->dmxdev.filternum = adap->demux.filternum; + adap->dmxdev.demux = &adap->demux.dmx; + adap->dmxdev.capabilities = 0; + if ((ret = dvb_dmxdev_init(&adap->dmxdev, &adap->dvb_adap)) < 0) { + err("dvb_dmxdev_init failed: error %d",ret); + goto err_dmx_dev; + } + + dvb_net_init(&adap->dvb_adap, &adap->dvb_net, &adap->demux.dmx); + + adap->state |= DVB_USB_ADAP_STATE_DVB; + return 0; + +err_dmx_dev: + dvb_dmx_release(&adap->demux); +err_dmx: + dvb_unregister_adapter(&adap->dvb_adap); +err: + return ret; +} + +int dvb_usb_adapter_dvb_exit(struct dvb_usb_adapter *adap) +{ + if (adap->state & DVB_USB_ADAP_STATE_DVB) { + deb_info("unregistering DVB part\n"); + dvb_net_release(&adap->dvb_net); + adap->demux.dmx.close(&adap->demux.dmx); + dvb_dmxdev_release(&adap->dmxdev); + dvb_dmx_release(&adap->demux); + dvb_unregister_adapter(&adap->dvb_adap); + adap->state &= ~DVB_USB_ADAP_STATE_DVB; + } + return 0; +} + +static int dvb_usb_fe_wakeup(struct dvb_frontend *fe) +{ + struct dvb_usb_adapter *adap = fe->dvb->priv; + + dvb_usb_device_power_ctrl(adap->dev, 1); + + if (adap->fe_init) + adap->fe_init(fe); + + return 0; +} + +static int dvb_usb_fe_sleep(struct dvb_frontend *fe) +{ + struct dvb_usb_adapter *adap = fe->dvb->priv; + + if (adap->fe_sleep) + adap->fe_sleep(fe); + + return dvb_usb_device_power_ctrl(adap->dev, 0); +} + +int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap) +{ + if (adap->props.frontend_attach == NULL) { + err("strange: '%s' #%d doesn't want to attach a frontend.",adap->dev->desc->name, adap->id); + return 0; + } + + /* re-assign sleep and wakeup functions */ + if (adap->props.frontend_attach(adap) == 0 && adap->fe != NULL) { + adap->fe_init = adap->fe->ops.init; adap->fe->ops.init = dvb_usb_fe_wakeup; + adap->fe_sleep = adap->fe->ops.sleep; adap->fe->ops.sleep = dvb_usb_fe_sleep; + + if (dvb_register_frontend(&adap->dvb_adap, adap->fe)) { + err("Frontend registration failed."); + dvb_frontend_detach(adap->fe); + adap->fe = NULL; + return -ENODEV; + } + + /* only attach the tuner if the demod is there */ + if (adap->props.tuner_attach != NULL) + adap->props.tuner_attach(adap); + } else + err("no frontend was attached by '%s'",adap->dev->desc->name); + + return 0; +} + +int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap) +{ + if (adap->fe != NULL) { + dvb_unregister_frontend(adap->fe); + dvb_frontend_detach(adap->fe); + } + return 0; +} |