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 */ 14 static 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("submitting all URBs\n"); 60 usb_urb_submit(&adap->fe_adap[adap->active_fe].stream); 61 62 deb_ts("controlling pid parser\n"); 63 if (adap->props.fe[adap->active_fe].caps & DVB_USB_ADAP_HAS_PID_FILTER && 64 adap->props.fe[adap->active_fe].caps & 65 DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF && 66 adap->props.fe[adap->active_fe].pid_filter_ctrl != NULL) { 67 ret = adap->props.fe[adap->active_fe].pid_filter_ctrl(adap, 68 adap->fe_adap[adap->active_fe].pid_filtering); 69 if (ret < 0) { 70 err("could not handle pid_parser"); 71 return ret; 72 } 73 } 74 deb_ts("start feeding\n"); 75 if (adap->props.fe[adap->active_fe].streaming_ctrl != NULL) { 76 ret = adap->props.fe[adap->active_fe].streaming_ctrl(adap, 1); 77 if (ret < 0) { 78 err("error while enabling fifo."); 79 return ret; 80 } 81 } 82 83 } 84 return 0; 85 } 86 87 static int dvb_usb_start_feed(struct dvb_demux_feed *dvbdmxfeed) 88 { 89 deb_ts("start pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid, 90 dvbdmxfeed->type); 91 return dvb_usb_ctrl_feed(dvbdmxfeed, 1); 92 } 93 94 static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed) 95 { 96 deb_ts("stop pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid, dvbdmxfeed->type); 97 return dvb_usb_ctrl_feed(dvbdmxfeed, 0); 98 } 99 100 static int dvb_usb_media_device_init(struct dvb_usb_adapter *adap) 101 { 102 #ifdef CONFIG_MEDIA_CONTROLLER_DVB 103 struct media_device *mdev; 104 struct dvb_usb_device *d = adap->dev; 105 struct usb_device *udev = d->udev; 106 107 mdev = kzalloc(sizeof(*mdev), GFP_KERNEL); 108 if (!mdev) 109 return -ENOMEM; 110 111 media_device_usb_init(mdev, udev, d->desc->name); 112 113 dvb_register_media_controller(&adap->dvb_adap, mdev); 114 115 dev_info(&d->udev->dev, "media controller created\n"); 116 #endif 117 return 0; 118 } 119 120 static int dvb_usb_media_device_register(struct dvb_usb_adapter *adap) 121 { 122 #ifdef CONFIG_MEDIA_CONTROLLER_DVB 123 return media_device_register(adap->dvb_adap.mdev); 124 #else 125 return 0; 126 #endif 127 } 128 129 static void dvb_usb_media_device_unregister(struct dvb_usb_adapter *adap) 130 { 131 #ifdef CONFIG_MEDIA_CONTROLLER_DVB 132 if (!adap->dvb_adap.mdev) 133 return; 134 135 media_device_unregister(adap->dvb_adap.mdev); 136 media_device_cleanup(adap->dvb_adap.mdev); 137 kfree(adap->dvb_adap.mdev); 138 adap->dvb_adap.mdev = NULL; 139 #endif 140 } 141 142 int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap, short *adapter_nums) 143 { 144 int i; 145 int ret = dvb_register_adapter(&adap->dvb_adap, adap->dev->desc->name, 146 adap->dev->owner, &adap->dev->udev->dev, 147 adapter_nums); 148 149 if (ret < 0) { 150 deb_info("dvb_register_adapter failed: error %d", ret); 151 goto err; 152 } 153 adap->dvb_adap.priv = adap; 154 155 ret = dvb_usb_media_device_init(adap); 156 if (ret < 0) { 157 deb_info("dvb_usb_media_device_init failed: error %d", ret); 158 goto err_mc; 159 } 160 161 if (adap->dev->props.read_mac_address) { 162 if (adap->dev->props.read_mac_address(adap->dev, adap->dvb_adap.proposed_mac) == 0) 163 info("MAC address: %pM", adap->dvb_adap.proposed_mac); 164 else 165 err("MAC address reading failed."); 166 } 167 168 169 adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING; 170 adap->demux.priv = adap; 171 172 adap->demux.filternum = 0; 173 for (i = 0; i < adap->props.num_frontends; i++) { 174 if (adap->demux.filternum < adap->fe_adap[i].max_feed_count) 175 adap->demux.filternum = adap->fe_adap[i].max_feed_count; 176 } 177 adap->demux.feednum = adap->demux.filternum; 178 adap->demux.start_feed = dvb_usb_start_feed; 179 adap->demux.stop_feed = dvb_usb_stop_feed; 180 adap->demux.write_to_decoder = NULL; 181 if ((ret = dvb_dmx_init(&adap->demux)) < 0) { 182 err("dvb_dmx_init failed: error %d", ret); 183 goto err_dmx; 184 } 185 186 adap->dmxdev.filternum = adap->demux.filternum; 187 adap->dmxdev.demux = &adap->demux.dmx; 188 adap->dmxdev.capabilities = 0; 189 if ((ret = dvb_dmxdev_init(&adap->dmxdev, &adap->dvb_adap)) < 0) { 190 err("dvb_dmxdev_init failed: error %d", ret); 191 goto err_dmx_dev; 192 } 193 194 if ((ret = dvb_net_init(&adap->dvb_adap, &adap->dvb_net, 195 &adap->demux.dmx)) < 0) { 196 err("dvb_net_init failed: error %d", ret); 197 goto err_net_init; 198 } 199 200 adap->state |= DVB_USB_ADAP_STATE_DVB; 201 return 0; 202 203 err_net_init: 204 dvb_dmxdev_release(&adap->dmxdev); 205 err_dmx_dev: 206 dvb_dmx_release(&adap->demux); 207 err_dmx: 208 dvb_usb_media_device_unregister(adap); 209 err_mc: 210 dvb_unregister_adapter(&adap->dvb_adap); 211 err: 212 return ret; 213 } 214 215 int dvb_usb_adapter_dvb_exit(struct dvb_usb_adapter *adap) 216 { 217 if (adap->state & DVB_USB_ADAP_STATE_DVB) { 218 deb_info("unregistering DVB part\n"); 219 dvb_net_release(&adap->dvb_net); 220 adap->demux.dmx.close(&adap->demux.dmx); 221 dvb_dmxdev_release(&adap->dmxdev); 222 dvb_dmx_release(&adap->demux); 223 dvb_usb_media_device_unregister(adap); 224 dvb_unregister_adapter(&adap->dvb_adap); 225 adap->state &= ~DVB_USB_ADAP_STATE_DVB; 226 } 227 return 0; 228 } 229 230 static int dvb_usb_set_active_fe(struct dvb_frontend *fe, int onoff) 231 { 232 struct dvb_usb_adapter *adap = fe->dvb->priv; 233 234 int ret = (adap->props.frontend_ctrl) ? 235 adap->props.frontend_ctrl(fe, onoff) : 0; 236 237 if (ret < 0) { 238 err("frontend_ctrl request failed"); 239 return ret; 240 } 241 if (onoff) 242 adap->active_fe = fe->id; 243 244 return 0; 245 } 246 247 static int dvb_usb_fe_wakeup(struct dvb_frontend *fe) 248 { 249 struct dvb_usb_adapter *adap = fe->dvb->priv; 250 251 dvb_usb_device_power_ctrl(adap->dev, 1); 252 253 dvb_usb_set_active_fe(fe, 1); 254 255 if (adap->fe_adap[fe->id].fe_init) 256 adap->fe_adap[fe->id].fe_init(fe); 257 258 return 0; 259 } 260 261 static int dvb_usb_fe_sleep(struct dvb_frontend *fe) 262 { 263 struct dvb_usb_adapter *adap = fe->dvb->priv; 264 265 if (adap->fe_adap[fe->id].fe_sleep) 266 adap->fe_adap[fe->id].fe_sleep(fe); 267 268 dvb_usb_set_active_fe(fe, 0); 269 270 return dvb_usb_device_power_ctrl(adap->dev, 0); 271 } 272 273 int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap) 274 { 275 int ret, i; 276 277 /* register all given adapter frontends */ 278 for (i = 0; i < adap->props.num_frontends; i++) { 279 280 if (adap->props.fe[i].frontend_attach == NULL) { 281 err("strange: '%s' #%d,%d doesn't want to attach a frontend.", 282 adap->dev->desc->name, adap->id, i); 283 284 return 0; 285 } 286 287 ret = adap->props.fe[i].frontend_attach(adap); 288 if (ret || adap->fe_adap[i].fe == NULL) { 289 /* only print error when there is no FE at all */ 290 if (i == 0) 291 err("no frontend was attached by '%s'", 292 adap->dev->desc->name); 293 294 return 0; 295 } 296 297 adap->fe_adap[i].fe->id = i; 298 299 /* re-assign sleep and wakeup functions */ 300 adap->fe_adap[i].fe_init = adap->fe_adap[i].fe->ops.init; 301 adap->fe_adap[i].fe->ops.init = dvb_usb_fe_wakeup; 302 adap->fe_adap[i].fe_sleep = adap->fe_adap[i].fe->ops.sleep; 303 adap->fe_adap[i].fe->ops.sleep = dvb_usb_fe_sleep; 304 305 if (dvb_register_frontend(&adap->dvb_adap, adap->fe_adap[i].fe)) { 306 err("Frontend %d registration failed.", i); 307 dvb_frontend_detach(adap->fe_adap[i].fe); 308 adap->fe_adap[i].fe = NULL; 309 /* In error case, do not try register more FEs, 310 * still leaving already registered FEs alive. */ 311 if (i == 0) 312 return -ENODEV; 313 else 314 return 0; 315 } 316 317 /* only attach the tuner if the demod is there */ 318 if (adap->props.fe[i].tuner_attach != NULL) 319 adap->props.fe[i].tuner_attach(adap); 320 321 adap->num_frontends_initialized++; 322 } 323 324 ret = dvb_create_media_graph(&adap->dvb_adap, true); 325 if (ret) 326 return ret; 327 328 ret = dvb_usb_media_device_register(adap); 329 330 return ret; 331 } 332 333 int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap) 334 { 335 int i = adap->num_frontends_initialized - 1; 336 337 /* unregister all given adapter frontends */ 338 for (; i >= 0; i--) { 339 if (adap->fe_adap[i].fe != NULL) { 340 dvb_unregister_frontend(adap->fe_adap[i].fe); 341 dvb_frontend_detach(adap->fe_adap[i].fe); 342 } 343 } 344 adap->num_frontends_initialized = 0; 345 346 return 0; 347 } 348