From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- drivers/media/usb/dvb-usb/dvb-usb-dvb.c | 351 ++++++++++++++++++++++++++++++++ 1 file changed, 351 insertions(+) create mode 100644 drivers/media/usb/dvb-usb/dvb-usb-dvb.c (limited to 'drivers/media/usb/dvb-usb/dvb-usb-dvb.c') diff --git a/drivers/media/usb/dvb-usb/dvb-usb-dvb.c b/drivers/media/usb/dvb-usb/dvb-usb-dvb.c new file mode 100644 index 000000000..8056053c9 --- /dev/null +++ b/drivers/media/usb/dvb-usb/dvb-usb-dvb.c @@ -0,0 +1,351 @@ +// SPDX-License-Identifier: GPL-2.0 +/* dvb-usb-dvb.c is part of the DVB USB library. + * + * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@posteo.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" +#include + +/* 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; + + if ((adap->active_fe < 0) || + (adap->active_fe >= adap->num_frontends_initialized)) { + return -EINVAL; + } + + 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->fe_adap[adap->active_fe].stream); + + if (adap->props.fe[adap->active_fe].streaming_ctrl != NULL) { + ret = adap->props.fe[adap->active_fe].streaming_ctrl(adap, 0); + if (ret < 0) { + err("error while stopping stream."); + return ret; + } + } + } + + 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->fe_adap[adap->active_fe].pid_filtering ? + "yes" : "no", dvbdmxfeed->pid, dvbdmxfeed->pid, + dvbdmxfeed->index, onoff ? "on" : "off"); + if (adap->props.fe[adap->active_fe].caps & DVB_USB_ADAP_HAS_PID_FILTER && + adap->fe_adap[adap->active_fe].pid_filtering && + adap->props.fe[adap->active_fe].pid_filter != NULL) + adap->props.fe[adap->active_fe].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->fe_adap[adap->active_fe].stream); + + deb_ts("controlling pid parser\n"); + if (adap->props.fe[adap->active_fe].caps & DVB_USB_ADAP_HAS_PID_FILTER && + adap->props.fe[adap->active_fe].caps & + DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF && + adap->props.fe[adap->active_fe].pid_filter_ctrl != NULL) { + ret = adap->props.fe[adap->active_fe].pid_filter_ctrl(adap, + adap->fe_adap[adap->active_fe].pid_filtering); + if (ret < 0) { + err("could not handle pid_parser"); + return ret; + } + } + deb_ts("start feeding\n"); + if (adap->props.fe[adap->active_fe].streaming_ctrl != NULL) { + ret = adap->props.fe[adap->active_fe].streaming_ctrl(adap, 1); + if (ret < 0) { + err("error while enabling fifo."); + return ret; + } + } + + } + 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); +} + +static int dvb_usb_media_device_init(struct dvb_usb_adapter *adap) +{ +#ifdef CONFIG_MEDIA_CONTROLLER_DVB + struct media_device *mdev; + struct dvb_usb_device *d = adap->dev; + struct usb_device *udev = d->udev; + + mdev = kzalloc(sizeof(*mdev), GFP_KERNEL); + if (!mdev) + return -ENOMEM; + + media_device_usb_init(mdev, udev, d->desc->name); + + dvb_register_media_controller(&adap->dvb_adap, mdev); + + dev_info(&d->udev->dev, "media controller created\n"); +#endif + return 0; +} + +static int dvb_usb_media_device_register(struct dvb_usb_adapter *adap) +{ +#ifdef CONFIG_MEDIA_CONTROLLER_DVB + return media_device_register(adap->dvb_adap.mdev); +#else + return 0; +#endif +} + +static void dvb_usb_media_device_unregister(struct dvb_usb_adapter *adap) +{ +#ifdef CONFIG_MEDIA_CONTROLLER_DVB + if (!adap->dvb_adap.mdev) + return; + + mutex_lock(&adap->dvb_adap.mdev_lock); + + media_device_unregister(adap->dvb_adap.mdev); + media_device_cleanup(adap->dvb_adap.mdev); + kfree(adap->dvb_adap.mdev); + adap->dvb_adap.mdev = NULL; + + mutex_unlock(&adap->dvb_adap.mdev_lock); +#endif +} + +int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap, short *adapter_nums) +{ + int i; + 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; + + ret = dvb_usb_media_device_init(adap); + if (ret < 0) { + deb_info("dvb_usb_media_device_init failed: error %d", ret); + goto err_mc; + } + + 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: %pM", adap->dvb_adap.proposed_mac); + else + err("MAC address reading failed."); + } + + + adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING; + adap->demux.priv = adap; + + adap->demux.filternum = 0; + for (i = 0; i < adap->props.num_frontends; i++) { + if (adap->demux.filternum < adap->fe_adap[i].max_feed_count) + adap->demux.filternum = adap->fe_adap[i].max_feed_count; + } + adap->demux.feednum = adap->demux.filternum; + 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; + } + + if ((ret = dvb_net_init(&adap->dvb_adap, &adap->dvb_net, + &adap->demux.dmx)) < 0) { + err("dvb_net_init failed: error %d", ret); + goto err_net_init; + } + + adap->state |= DVB_USB_ADAP_STATE_DVB; + return 0; + +err_net_init: + dvb_dmxdev_release(&adap->dmxdev); +err_dmx_dev: + dvb_dmx_release(&adap->demux); +err_dmx: + dvb_usb_media_device_unregister(adap); +err_mc: + 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_usb_media_device_unregister(adap); + dvb_unregister_adapter(&adap->dvb_adap); + adap->state &= ~DVB_USB_ADAP_STATE_DVB; + } + return 0; +} + +static int dvb_usb_set_active_fe(struct dvb_frontend *fe, int onoff) +{ + struct dvb_usb_adapter *adap = fe->dvb->priv; + + int ret = (adap->props.frontend_ctrl) ? + adap->props.frontend_ctrl(fe, onoff) : 0; + + if (ret < 0) { + err("frontend_ctrl request failed"); + return ret; + } + if (onoff) + adap->active_fe = fe->id; + + 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); + + dvb_usb_set_active_fe(fe, 1); + + if (adap->fe_adap[fe->id].fe_init) + adap->fe_adap[fe->id].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_adap[fe->id].fe_sleep) + adap->fe_adap[fe->id].fe_sleep(fe); + + dvb_usb_set_active_fe(fe, 0); + + return dvb_usb_device_power_ctrl(adap->dev, 0); +} + +int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap) +{ + int ret, i; + + /* register all given adapter frontends */ + for (i = 0; i < adap->props.num_frontends; i++) { + + if (adap->props.fe[i].frontend_attach == NULL) { + err("strange: '%s' #%d,%d doesn't want to attach a frontend.", + adap->dev->desc->name, adap->id, i); + + return 0; + } + + ret = adap->props.fe[i].frontend_attach(adap); + if (ret || adap->fe_adap[i].fe == NULL) { + /* only print error when there is no FE at all */ + if (i == 0) + err("no frontend was attached by '%s'", + adap->dev->desc->name); + + return 0; + } + + adap->fe_adap[i].fe->id = i; + + /* re-assign sleep and wakeup functions */ + adap->fe_adap[i].fe_init = adap->fe_adap[i].fe->ops.init; + adap->fe_adap[i].fe->ops.init = dvb_usb_fe_wakeup; + adap->fe_adap[i].fe_sleep = adap->fe_adap[i].fe->ops.sleep; + adap->fe_adap[i].fe->ops.sleep = dvb_usb_fe_sleep; + + if (dvb_register_frontend(&adap->dvb_adap, adap->fe_adap[i].fe)) { + err("Frontend %d registration failed.", i); + dvb_frontend_detach(adap->fe_adap[i].fe); + adap->fe_adap[i].fe = NULL; + /* In error case, do not try register more FEs, + * still leaving already registered FEs alive. */ + if (i == 0) + return -ENODEV; + else + return 0; + } + + /* only attach the tuner if the demod is there */ + if (adap->props.fe[i].tuner_attach != NULL) + adap->props.fe[i].tuner_attach(adap); + + adap->num_frontends_initialized++; + } + + ret = dvb_create_media_graph(&adap->dvb_adap, true); + if (ret) + return ret; + + ret = dvb_usb_media_device_register(adap); + + return ret; +} + +int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap) +{ + int i = adap->num_frontends_initialized - 1; + + /* unregister all given adapter frontends */ + for (; i >= 0; i--) { + if (adap->fe_adap[i].fe != NULL) { + dvb_unregister_frontend(adap->fe_adap[i].fe); + dvb_frontend_detach(adap->fe_adap[i].fe); + } + } + adap->num_frontends_initialized = 0; + + return 0; +} -- cgit v1.2.3