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1// SPDX-License-Identifier: GPL-2.02/* dvb-usb-dvb.c is part of the DVB USB library.3 *4 * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@posteo.de)5 * see dvb-usb-init.c for copyright information.6 *7 * This file contains functions for initializing and handling the8 * linux-dvb API.9 */10#include "dvb-usb-common.h"11#include <media/media-device.h>12 13/* does the complete input transfer handling */14static int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff)15{16 struct dvb_usb_adapter *adap = dvbdmxfeed->demux->priv;17 int newfeedcount, ret;18 19 if (adap == NULL)20 return -ENODEV;21 22 if ((adap->active_fe < 0) ||23 (adap->active_fe >= adap->num_frontends_initialized)) {24 return -EINVAL;25 }26 27 newfeedcount = adap->feedcount + (onoff ? 1 : -1);28 29 /* stop feed before setting a new pid if there will be no pid anymore */30 if (newfeedcount == 0) {31 deb_ts("stop feeding\n");32 usb_urb_kill(&adap->fe_adap[adap->active_fe].stream);33 34 if (adap->props.fe[adap->active_fe].streaming_ctrl != NULL) {35 ret = adap->props.fe[adap->active_fe].streaming_ctrl(adap, 0);36 if (ret < 0) {37 err("error while stopping stream.");38 return ret;39 }40 }41 }42 43 adap->feedcount = newfeedcount;44 45 /* activate the pid on the device specific pid_filter */46 deb_ts("setting pid (%s): %5d %04x at index %d '%s'\n",47 adap->fe_adap[adap->active_fe].pid_filtering ?48 "yes" : "no", dvbdmxfeed->pid, dvbdmxfeed->pid,49 dvbdmxfeed->index, onoff ? "on" : "off");50 if (adap->props.fe[adap->active_fe].caps & DVB_USB_ADAP_HAS_PID_FILTER &&51 adap->fe_adap[adap->active_fe].pid_filtering &&52 adap->props.fe[adap->active_fe].pid_filter != NULL)53 adap->props.fe[adap->active_fe].pid_filter(adap, dvbdmxfeed->index, dvbdmxfeed->pid, onoff);54 55 /* start the feed if this was the first feed and there is still a feed56 * for reception.57 */58 if (adap->feedcount == onoff && adap->feedcount > 0) {59 deb_ts("controlling pid parser\n");60 if (adap->props.fe[adap->active_fe].caps & DVB_USB_ADAP_HAS_PID_FILTER &&61 adap->props.fe[adap->active_fe].caps &62 DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF &&63 adap->props.fe[adap->active_fe].pid_filter_ctrl != NULL) {64 ret = adap->props.fe[adap->active_fe].pid_filter_ctrl(adap,65 adap->fe_adap[adap->active_fe].pid_filtering);66 if (ret < 0) {67 err("could not handle pid_parser");68 return ret;69 }70 }71 deb_ts("start feeding\n");72 if (adap->props.fe[adap->active_fe].streaming_ctrl != NULL) {73 ret = adap->props.fe[adap->active_fe].streaming_ctrl(adap, 1);74 if (ret < 0) {75 err("error while enabling fifo.");76 return ret;77 }78 }79 80 deb_ts("submitting all URBs\n");81 usb_urb_submit(&adap->fe_adap[adap->active_fe].stream);82 }83 return 0;84}85 86static int dvb_usb_start_feed(struct dvb_demux_feed *dvbdmxfeed)87{88 deb_ts("start pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid,89 dvbdmxfeed->type);90 return dvb_usb_ctrl_feed(dvbdmxfeed, 1);91}92 93static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)94{95 deb_ts("stop pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid, dvbdmxfeed->type);96 return dvb_usb_ctrl_feed(dvbdmxfeed, 0);97}98 99static int dvb_usb_media_device_init(struct dvb_usb_adapter *adap)100{101#ifdef CONFIG_MEDIA_CONTROLLER_DVB102 struct media_device *mdev;103 struct dvb_usb_device *d = adap->dev;104 struct usb_device *udev = d->udev;105 106 mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);107 if (!mdev)108 return -ENOMEM;109 110 media_device_usb_init(mdev, udev, d->desc->name);111 112 dvb_register_media_controller(&adap->dvb_adap, mdev);113 114 dev_info(&d->udev->dev, "media controller created\n");115#endif116 return 0;117}118 119static int dvb_usb_media_device_register(struct dvb_usb_adapter *adap)120{121#ifdef CONFIG_MEDIA_CONTROLLER_DVB122 return media_device_register(adap->dvb_adap.mdev);123#else124 return 0;125#endif126}127 128static void dvb_usb_media_device_unregister(struct dvb_usb_adapter *adap)129{130#ifdef CONFIG_MEDIA_CONTROLLER_DVB131 if (!adap->dvb_adap.mdev)132 return;133 134 mutex_lock(&adap->dvb_adap.mdev_lock);135 136 media_device_unregister(adap->dvb_adap.mdev);137 media_device_cleanup(adap->dvb_adap.mdev);138 kfree(adap->dvb_adap.mdev);139 adap->dvb_adap.mdev = NULL;140 141 mutex_unlock(&adap->dvb_adap.mdev_lock);142#endif143}144 145int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap, short *adapter_nums)146{147 int i;148 int ret = dvb_register_adapter(&adap->dvb_adap, adap->dev->desc->name,149 adap->dev->owner, &adap->dev->udev->dev,150 adapter_nums);151 152 if (ret < 0) {153 deb_info("dvb_register_adapter failed: error %d", ret);154 goto err;155 }156 adap->dvb_adap.priv = adap;157 158 ret = dvb_usb_media_device_init(adap);159 if (ret < 0) {160 deb_info("dvb_usb_media_device_init failed: error %d", ret);161 goto err_mc;162 }163 164 if (adap->dev->props.read_mac_address) {165 if (adap->dev->props.read_mac_address(adap->dev, adap->dvb_adap.proposed_mac) == 0)166 info("MAC address: %pM", adap->dvb_adap.proposed_mac);167 else168 err("MAC address reading failed.");169 }170 171 172 adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING;173 adap->demux.priv = adap;174 175 adap->demux.filternum = 0;176 for (i = 0; i < adap->props.num_frontends; i++) {177 if (adap->demux.filternum < adap->fe_adap[i].max_feed_count)178 adap->demux.filternum = adap->fe_adap[i].max_feed_count;179 }180 adap->demux.feednum = adap->demux.filternum;181 adap->demux.start_feed = dvb_usb_start_feed;182 adap->demux.stop_feed = dvb_usb_stop_feed;183 adap->demux.write_to_decoder = NULL;184 if ((ret = dvb_dmx_init(&adap->demux)) < 0) {185 err("dvb_dmx_init failed: error %d", ret);186 goto err_dmx;187 }188 189 adap->dmxdev.filternum = adap->demux.filternum;190 adap->dmxdev.demux = &adap->demux.dmx;191 adap->dmxdev.capabilities = 0;192 if ((ret = dvb_dmxdev_init(&adap->dmxdev, &adap->dvb_adap)) < 0) {193 err("dvb_dmxdev_init failed: error %d", ret);194 goto err_dmx_dev;195 }196 197 if ((ret = dvb_net_init(&adap->dvb_adap, &adap->dvb_net,198 &adap->demux.dmx)) < 0) {199 err("dvb_net_init failed: error %d", ret);200 goto err_net_init;201 }202 203 adap->state |= DVB_USB_ADAP_STATE_DVB;204 return 0;205 206err_net_init:207 dvb_dmxdev_release(&adap->dmxdev);208err_dmx_dev:209 dvb_dmx_release(&adap->demux);210err_dmx:211 dvb_usb_media_device_unregister(adap);212err_mc:213 dvb_unregister_adapter(&adap->dvb_adap);214err:215 return ret;216}217 218int dvb_usb_adapter_dvb_exit(struct dvb_usb_adapter *adap)219{220 if (adap->state & DVB_USB_ADAP_STATE_DVB) {221 deb_info("unregistering DVB part\n");222 dvb_net_release(&adap->dvb_net);223 adap->demux.dmx.close(&adap->demux.dmx);224 dvb_dmxdev_release(&adap->dmxdev);225 dvb_dmx_release(&adap->demux);226 dvb_usb_media_device_unregister(adap);227 dvb_unregister_adapter(&adap->dvb_adap);228 adap->state &= ~DVB_USB_ADAP_STATE_DVB;229 }230 return 0;231}232 233static int dvb_usb_set_active_fe(struct dvb_frontend *fe, int onoff)234{235 struct dvb_usb_adapter *adap = fe->dvb->priv;236 237 int ret = (adap->props.frontend_ctrl) ?238 adap->props.frontend_ctrl(fe, onoff) : 0;239 240 if (ret < 0) {241 err("frontend_ctrl request failed");242 return ret;243 }244 if (onoff)245 adap->active_fe = fe->id;246 247 return 0;248}249 250static int dvb_usb_fe_wakeup(struct dvb_frontend *fe)251{252 struct dvb_usb_adapter *adap = fe->dvb->priv;253 254 dvb_usb_device_power_ctrl(adap->dev, 1);255 256 dvb_usb_set_active_fe(fe, 1);257 258 if (adap->fe_adap[fe->id].fe_init)259 adap->fe_adap[fe->id].fe_init(fe);260 261 return 0;262}263 264static int dvb_usb_fe_sleep(struct dvb_frontend *fe)265{266 struct dvb_usb_adapter *adap = fe->dvb->priv;267 268 if (adap->fe_adap[fe->id].fe_sleep)269 adap->fe_adap[fe->id].fe_sleep(fe);270 271 dvb_usb_set_active_fe(fe, 0);272 273 return dvb_usb_device_power_ctrl(adap->dev, 0);274}275 276int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap)277{278 int ret, i;279 280 /* register all given adapter frontends */281 for (i = 0; i < adap->props.num_frontends; i++) {282 283 if (adap->props.fe[i].frontend_attach == NULL) {284 err("strange: '%s' #%d,%d doesn't want to attach a frontend.",285 adap->dev->desc->name, adap->id, i);286 287 return 0;288 }289 290 ret = adap->props.fe[i].frontend_attach(adap);291 if (ret || adap->fe_adap[i].fe == NULL) {292 /* only print error when there is no FE at all */293 if (i == 0)294 err("no frontend was attached by '%s'",295 adap->dev->desc->name);296 297 return 0;298 }299 300 adap->fe_adap[i].fe->id = i;301 302 /* re-assign sleep and wakeup functions */303 adap->fe_adap[i].fe_init = adap->fe_adap[i].fe->ops.init;304 adap->fe_adap[i].fe->ops.init = dvb_usb_fe_wakeup;305 adap->fe_adap[i].fe_sleep = adap->fe_adap[i].fe->ops.sleep;306 adap->fe_adap[i].fe->ops.sleep = dvb_usb_fe_sleep;307 308 if (dvb_register_frontend(&adap->dvb_adap, adap->fe_adap[i].fe)) {309 err("Frontend %d registration failed.", i);310 dvb_frontend_detach(adap->fe_adap[i].fe);311 adap->fe_adap[i].fe = NULL;312 /* In error case, do not try register more FEs,313 * still leaving already registered FEs alive. */314 if (i == 0)315 return -ENODEV;316 else317 return 0;318 }319 320 /* only attach the tuner if the demod is there */321 if (adap->props.fe[i].tuner_attach != NULL)322 adap->props.fe[i].tuner_attach(adap);323 324 adap->num_frontends_initialized++;325 }326 327 ret = dvb_create_media_graph(&adap->dvb_adap, true);328 if (ret)329 return ret;330 331 ret = dvb_usb_media_device_register(adap);332 333 return ret;334}335 336int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap)337{338 int i = adap->num_frontends_initialized - 1;339 340 /* unregister all given adapter frontends */341 for (; i >= 0; i--) {342 if (adap->fe_adap[i].fe != NULL) {343 dvb_unregister_frontend(adap->fe_adap[i].fe);344 dvb_frontend_detach(adap->fe_adap[i].fe);345 }346 }347 adap->num_frontends_initialized = 0;348 349 return 0;350}351