1 /* dvb-usb-dvb.c is part of the DVB USB library. 2 * 3 * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de) 4 * see dvb-usb-init.c for copyright information. 5 * 6 * This file contains functions for initializing and handling the 7 * linux-dvb API. 8 */ 9 #include "dvb-usb-common.h" 10 11 /* does the complete input transfer handling */ 12 static int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff) 13 { 14 struct dvb_usb_adapter *adap = dvbdmxfeed->demux->priv; 15 int newfeedcount, ret; 16 17 if (adap == NULL) 18 return -ENODEV; 19 20 if ((adap->active_fe < 0) || 21 (adap->active_fe >= adap->num_frontends_initialized)) { 22 return -EINVAL; 23 } 24 25 newfeedcount = adap->feedcount + (onoff ? 1 : -1); 26 27 /* stop feed before setting a new pid if there will be no pid anymore */ 28 if (newfeedcount == 0) { 29 deb_ts("stop feeding\n"); 30 usb_urb_kill(&adap->fe_adap[adap->active_fe].stream); 31 32 if (adap->props.fe[adap->active_fe].streaming_ctrl != NULL) { 33 ret = adap->props.fe[adap->active_fe].streaming_ctrl(adap, 0); 34 if (ret < 0) { 35 err("error while stopping stream."); 36 return ret; 37 } 38 } 39 } 40 41 adap->feedcount = newfeedcount; 42 43 /* activate the pid on the device specific pid_filter */ 44 deb_ts("setting pid (%s): %5d %04x at index %d '%s'\n", 45 adap->fe_adap[adap->active_fe].pid_filtering ? 46 "yes" : "no", dvbdmxfeed->pid, dvbdmxfeed->pid, 47 dvbdmxfeed->index, onoff ? "on" : "off"); 48 if (adap->props.fe[adap->active_fe].caps & DVB_USB_ADAP_HAS_PID_FILTER && 49 adap->fe_adap[adap->active_fe].pid_filtering && 50 adap->props.fe[adap->active_fe].pid_filter != NULL) 51 adap->props.fe[adap->active_fe].pid_filter(adap, dvbdmxfeed->index, dvbdmxfeed->pid, onoff); 52 53 /* start the feed if this was the first feed and there is still a feed 54 * for reception. 55 */ 56 if (adap->feedcount == onoff && adap->feedcount > 0) { 57 deb_ts("submitting all URBs\n"); 58 usb_urb_submit(&adap->fe_adap[adap->active_fe].stream); 59 60 deb_ts("controlling pid parser\n"); 61 if (adap->props.fe[adap->active_fe].caps & DVB_USB_ADAP_HAS_PID_FILTER && 62 adap->props.fe[adap->active_fe].caps & 63 DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF && 64 adap->props.fe[adap->active_fe].pid_filter_ctrl != NULL) { 65 ret = adap->props.fe[adap->active_fe].pid_filter_ctrl(adap, 66 adap->fe_adap[adap->active_fe].pid_filtering); 67 if (ret < 0) { 68 err("could not handle pid_parser"); 69 return ret; 70 } 71 } 72 deb_ts("start feeding\n"); 73 if (adap->props.fe[adap->active_fe].streaming_ctrl != NULL) { 74 ret = adap->props.fe[adap->active_fe].streaming_ctrl(adap, 1); 75 if (ret < 0) { 76 err("error while enabling fifo."); 77 return ret; 78 } 79 } 80 81 } 82 return 0; 83 } 84 85 static int dvb_usb_start_feed(struct dvb_demux_feed *dvbdmxfeed) 86 { 87 deb_ts("start pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid, 88 dvbdmxfeed->type); 89 return dvb_usb_ctrl_feed(dvbdmxfeed, 1); 90 } 91 92 static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed) 93 { 94 deb_ts("stop pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid, dvbdmxfeed->type); 95 return dvb_usb_ctrl_feed(dvbdmxfeed, 0); 96 } 97 98 static int dvb_usb_media_device_init(struct dvb_usb_adapter *adap) 99 { 100 #ifdef CONFIG_MEDIA_CONTROLLER_DVB 101 struct media_device *mdev; 102 struct dvb_usb_device *d = adap->dev; 103 struct usb_device *udev = d->udev; 104 105 mdev = kzalloc(sizeof(*mdev), GFP_KERNEL); 106 if (!mdev) 107 return -ENOMEM; 108 109 mdev->dev = &udev->dev; 110 strlcpy(mdev->model, d->desc->name, sizeof(mdev->model)); 111 if (udev->serial) 112 strlcpy(mdev->serial, udev->serial, sizeof(mdev->serial)); 113 strcpy(mdev->bus_info, udev->devpath); 114 mdev->hw_revision = le16_to_cpu(udev->descriptor.bcdDevice); 115 mdev->driver_version = LINUX_VERSION_CODE; 116 117 media_device_init(mdev); 118 119 dvb_register_media_controller(&adap->dvb_adap, mdev); 120 121 dev_info(&d->udev->dev, "media controller created\n"); 122 #endif 123 return 0; 124 } 125 126 static int dvb_usb_media_device_register(struct dvb_usb_adapter *adap) 127 { 128 #ifdef CONFIG_MEDIA_CONTROLLER_DVB 129 return media_device_register(adap->dvb_adap.mdev); 130 #else 131 return 0; 132 #endif 133 } 134 135 static void dvb_usb_media_device_unregister(struct dvb_usb_adapter *adap) 136 { 137 #ifdef CONFIG_MEDIA_CONTROLLER_DVB 138 if (!adap->dvb_adap.mdev) 139 return; 140 141 media_device_unregister(adap->dvb_adap.mdev); 142 media_device_cleanup(adap->dvb_adap.mdev); 143 kfree(adap->dvb_adap.mdev); 144 adap->dvb_adap.mdev = NULL; 145 #endif 146 } 147 148 int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap, short *adapter_nums) 149 { 150 int i; 151 int ret = dvb_register_adapter(&adap->dvb_adap, adap->dev->desc->name, 152 adap->dev->owner, &adap->dev->udev->dev, 153 adapter_nums); 154 155 if (ret < 0) { 156 deb_info("dvb_register_adapter failed: error %d", ret); 157 goto err; 158 } 159 adap->dvb_adap.priv = adap; 160 161 ret = dvb_usb_media_device_init(adap); 162 if (ret < 0) { 163 deb_info("dvb_usb_media_device_init failed: error %d", ret); 164 goto err_mc; 165 } 166 167 if (adap->dev->props.read_mac_address) { 168 if (adap->dev->props.read_mac_address(adap->dev, adap->dvb_adap.proposed_mac) == 0) 169 info("MAC address: %pM", adap->dvb_adap.proposed_mac); 170 else 171 err("MAC address reading failed."); 172 } 173 174 175 adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING; 176 adap->demux.priv = adap; 177 178 adap->demux.filternum = 0; 179 for (i = 0; i < adap->props.num_frontends; i++) { 180 if (adap->demux.filternum < adap->fe_adap[i].max_feed_count) 181 adap->demux.filternum = adap->fe_adap[i].max_feed_count; 182 } 183 adap->demux.feednum = adap->demux.filternum; 184 adap->demux.start_feed = dvb_usb_start_feed; 185 adap->demux.stop_feed = dvb_usb_stop_feed; 186 adap->demux.write_to_decoder = NULL; 187 if ((ret = dvb_dmx_init(&adap->demux)) < 0) { 188 err("dvb_dmx_init failed: error %d", ret); 189 goto err_dmx; 190 } 191 192 adap->dmxdev.filternum = adap->demux.filternum; 193 adap->dmxdev.demux = &adap->demux.dmx; 194 adap->dmxdev.capabilities = 0; 195 if ((ret = dvb_dmxdev_init(&adap->dmxdev, &adap->dvb_adap)) < 0) { 196 err("dvb_dmxdev_init failed: error %d", ret); 197 goto err_dmx_dev; 198 } 199 200 if ((ret = dvb_net_init(&adap->dvb_adap, &adap->dvb_net, 201 &adap->demux.dmx)) < 0) { 202 err("dvb_net_init failed: error %d", ret); 203 goto err_net_init; 204 } 205 206 adap->state |= DVB_USB_ADAP_STATE_DVB; 207 return 0; 208 209 err_net_init: 210 dvb_dmxdev_release(&adap->dmxdev); 211 err_dmx_dev: 212 dvb_dmx_release(&adap->demux); 213 err_dmx: 214 dvb_usb_media_device_unregister(adap); 215 err_mc: 216 dvb_unregister_adapter(&adap->dvb_adap); 217 err: 218 return ret; 219 } 220 221 int dvb_usb_adapter_dvb_exit(struct dvb_usb_adapter *adap) 222 { 223 if (adap->state & DVB_USB_ADAP_STATE_DVB) { 224 deb_info("unregistering DVB part\n"); 225 dvb_net_release(&adap->dvb_net); 226 adap->demux.dmx.close(&adap->demux.dmx); 227 dvb_dmxdev_release(&adap->dmxdev); 228 dvb_dmx_release(&adap->demux); 229 dvb_usb_media_device_unregister(adap); 230 dvb_unregister_adapter(&adap->dvb_adap); 231 adap->state &= ~DVB_USB_ADAP_STATE_DVB; 232 } 233 return 0; 234 } 235 236 static int dvb_usb_set_active_fe(struct dvb_frontend *fe, int onoff) 237 { 238 struct dvb_usb_adapter *adap = fe->dvb->priv; 239 240 int ret = (adap->props.frontend_ctrl) ? 241 adap->props.frontend_ctrl(fe, onoff) : 0; 242 243 if (ret < 0) { 244 err("frontend_ctrl request failed"); 245 return ret; 246 } 247 if (onoff) 248 adap->active_fe = fe->id; 249 250 return 0; 251 } 252 253 static int dvb_usb_fe_wakeup(struct dvb_frontend *fe) 254 { 255 struct dvb_usb_adapter *adap = fe->dvb->priv; 256 257 dvb_usb_device_power_ctrl(adap->dev, 1); 258 259 dvb_usb_set_active_fe(fe, 1); 260 261 if (adap->fe_adap[fe->id].fe_init) 262 adap->fe_adap[fe->id].fe_init(fe); 263 264 return 0; 265 } 266 267 static int dvb_usb_fe_sleep(struct dvb_frontend *fe) 268 { 269 struct dvb_usb_adapter *adap = fe->dvb->priv; 270 271 if (adap->fe_adap[fe->id].fe_sleep) 272 adap->fe_adap[fe->id].fe_sleep(fe); 273 274 dvb_usb_set_active_fe(fe, 0); 275 276 return dvb_usb_device_power_ctrl(adap->dev, 0); 277 } 278 279 int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap) 280 { 281 int ret, i; 282 283 /* register all given adapter frontends */ 284 for (i = 0; i < adap->props.num_frontends; i++) { 285 286 if (adap->props.fe[i].frontend_attach == NULL) { 287 err("strange: '%s' #%d,%d " 288 "doesn't want to attach a frontend.", 289 adap->dev->desc->name, adap->id, i); 290 291 return 0; 292 } 293 294 ret = adap->props.fe[i].frontend_attach(adap); 295 if (ret || adap->fe_adap[i].fe == NULL) { 296 /* only print error when there is no FE at all */ 297 if (i == 0) 298 err("no frontend was attached by '%s'", 299 adap->dev->desc->name); 300 301 return 0; 302 } 303 304 adap->fe_adap[i].fe->id = i; 305 306 /* re-assign sleep and wakeup functions */ 307 adap->fe_adap[i].fe_init = adap->fe_adap[i].fe->ops.init; 308 adap->fe_adap[i].fe->ops.init = dvb_usb_fe_wakeup; 309 adap->fe_adap[i].fe_sleep = adap->fe_adap[i].fe->ops.sleep; 310 adap->fe_adap[i].fe->ops.sleep = dvb_usb_fe_sleep; 311 312 if (dvb_register_frontend(&adap->dvb_adap, adap->fe_adap[i].fe)) { 313 err("Frontend %d registration failed.", i); 314 dvb_frontend_detach(adap->fe_adap[i].fe); 315 adap->fe_adap[i].fe = NULL; 316 /* In error case, do not try register more FEs, 317 * still leaving already registered FEs alive. */ 318 if (i == 0) 319 return -ENODEV; 320 else 321 return 0; 322 } 323 324 /* only attach the tuner if the demod is there */ 325 if (adap->props.fe[i].tuner_attach != NULL) 326 adap->props.fe[i].tuner_attach(adap); 327 328 adap->num_frontends_initialized++; 329 } 330 if (ret) 331 return ret; 332 333 ret = dvb_create_media_graph(&adap->dvb_adap, true); 334 if (ret) 335 return ret; 336 337 ret = dvb_usb_media_device_register(adap); 338 339 return ret; 340 } 341 342 int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap) 343 { 344 int i = adap->num_frontends_initialized - 1; 345 346 /* unregister all given adapter frontends */ 347 for (; i >= 0; i--) { 348 if (adap->fe_adap[i].fe != NULL) { 349 dvb_unregister_frontend(adap->fe_adap[i].fe); 350 dvb_frontend_detach(adap->fe_adap[i].fe); 351 } 352 } 353 adap->num_frontends_initialized = 0; 354 355 return 0; 356 } 357