1// SPDX-License-Identifier: GPL-2.0 2/* 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 the 8 * 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 feed 56 * 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_DVB 102 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#endif 116 return 0; 117} 118 119static int dvb_usb_media_device_register(struct dvb_usb_adapter *adap) 120{ 121#ifdef CONFIG_MEDIA_CONTROLLER_DVB 122 return media_device_register(adap->dvb_adap.mdev); 123#else 124 return 0; 125#endif 126} 127 128static void dvb_usb_media_device_unregister(struct dvb_usb_adapter *adap) 129{ 130#ifdef CONFIG_MEDIA_CONTROLLER_DVB 131 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#endif 143} 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 else 168 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 else 317 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