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