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 void dvb_usb_media_device_register(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 int ret; 105 106 mdev = kzalloc(sizeof(*mdev), GFP_KERNEL); 107 if (!mdev) 108 return; 109 110 mdev->dev = &udev->dev; 111 strlcpy(mdev->model, d->desc->name, sizeof(mdev->model)); 112 if (udev->serial) 113 strlcpy(mdev->serial, udev->serial, sizeof(mdev->serial)); 114 strcpy(mdev->bus_info, udev->devpath); 115 mdev->hw_revision = le16_to_cpu(udev->descriptor.bcdDevice); 116 mdev->driver_version = LINUX_VERSION_CODE; 117 118 ret = media_device_register(mdev); 119 if (ret) { 120 dev_err(&d->udev->dev, 121 "Couldn't create a media device. Error: %d\n", 122 ret); 123 kfree(mdev); 124 return; 125 } 126 dvb_register_media_controller(&adap->dvb_adap, mdev); 127 128 dev_info(&d->udev->dev, "media controller created\n"); 129 #endif 130 } 131 132 static void dvb_usb_media_device_unregister(struct dvb_usb_adapter *adap) 133 { 134 #ifdef CONFIG_MEDIA_CONTROLLER_DVB 135 if (!adap->dvb_adap.mdev) 136 return; 137 138 media_device_unregister(adap->dvb_adap.mdev); 139 kfree(adap->dvb_adap.mdev); 140 adap->dvb_adap.mdev = NULL; 141 #endif 142 } 143 144 int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap, short *adapter_nums) 145 { 146 int i; 147 int ret = dvb_register_adapter(&adap->dvb_adap, adap->dev->desc->name, 148 adap->dev->owner, &adap->dev->udev->dev, 149 adapter_nums); 150 151 if (ret < 0) { 152 deb_info("dvb_register_adapter failed: error %d", ret); 153 goto err; 154 } 155 adap->dvb_adap.priv = adap; 156 157 dvb_usb_media_device_register(adap); 158 159 if (adap->dev->props.read_mac_address) { 160 if (adap->dev->props.read_mac_address(adap->dev, adap->dvb_adap.proposed_mac) == 0) 161 info("MAC address: %pM", adap->dvb_adap.proposed_mac); 162 else 163 err("MAC address reading failed."); 164 } 165 166 167 adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING; 168 adap->demux.priv = adap; 169 170 adap->demux.filternum = 0; 171 for (i = 0; i < adap->props.num_frontends; i++) { 172 if (adap->demux.filternum < adap->fe_adap[i].max_feed_count) 173 adap->demux.filternum = adap->fe_adap[i].max_feed_count; 174 } 175 adap->demux.feednum = adap->demux.filternum; 176 adap->demux.start_feed = dvb_usb_start_feed; 177 adap->demux.stop_feed = dvb_usb_stop_feed; 178 adap->demux.write_to_decoder = NULL; 179 if ((ret = dvb_dmx_init(&adap->demux)) < 0) { 180 err("dvb_dmx_init failed: error %d", ret); 181 goto err_dmx; 182 } 183 184 adap->dmxdev.filternum = adap->demux.filternum; 185 adap->dmxdev.demux = &adap->demux.dmx; 186 adap->dmxdev.capabilities = 0; 187 if ((ret = dvb_dmxdev_init(&adap->dmxdev, &adap->dvb_adap)) < 0) { 188 err("dvb_dmxdev_init failed: error %d", ret); 189 goto err_dmx_dev; 190 } 191 192 if ((ret = dvb_net_init(&adap->dvb_adap, &adap->dvb_net, 193 &adap->demux.dmx)) < 0) { 194 err("dvb_net_init failed: error %d", ret); 195 goto err_net_init; 196 } 197 198 adap->state |= DVB_USB_ADAP_STATE_DVB; 199 return 0; 200 201 err_net_init: 202 dvb_dmxdev_release(&adap->dmxdev); 203 err_dmx_dev: 204 dvb_dmx_release(&adap->demux); 205 err_dmx: 206 dvb_usb_media_device_unregister(adap); 207 dvb_unregister_adapter(&adap->dvb_adap); 208 err: 209 return ret; 210 } 211 212 int dvb_usb_adapter_dvb_exit(struct dvb_usb_adapter *adap) 213 { 214 if (adap->state & DVB_USB_ADAP_STATE_DVB) { 215 deb_info("unregistering DVB part\n"); 216 dvb_net_release(&adap->dvb_net); 217 adap->demux.dmx.close(&adap->demux.dmx); 218 dvb_dmxdev_release(&adap->dmxdev); 219 dvb_dmx_release(&adap->demux); 220 dvb_usb_media_device_unregister(adap); 221 dvb_unregister_adapter(&adap->dvb_adap); 222 adap->state &= ~DVB_USB_ADAP_STATE_DVB; 223 } 224 return 0; 225 } 226 227 static int dvb_usb_set_active_fe(struct dvb_frontend *fe, int onoff) 228 { 229 struct dvb_usb_adapter *adap = fe->dvb->priv; 230 231 int ret = (adap->props.frontend_ctrl) ? 232 adap->props.frontend_ctrl(fe, onoff) : 0; 233 234 if (ret < 0) { 235 err("frontend_ctrl request failed"); 236 return ret; 237 } 238 if (onoff) 239 adap->active_fe = fe->id; 240 241 return 0; 242 } 243 244 static int dvb_usb_fe_wakeup(struct dvb_frontend *fe) 245 { 246 struct dvb_usb_adapter *adap = fe->dvb->priv; 247 248 dvb_usb_device_power_ctrl(adap->dev, 1); 249 250 dvb_usb_set_active_fe(fe, 1); 251 252 if (adap->fe_adap[fe->id].fe_init) 253 adap->fe_adap[fe->id].fe_init(fe); 254 255 return 0; 256 } 257 258 static int dvb_usb_fe_sleep(struct dvb_frontend *fe) 259 { 260 struct dvb_usb_adapter *adap = fe->dvb->priv; 261 262 if (adap->fe_adap[fe->id].fe_sleep) 263 adap->fe_adap[fe->id].fe_sleep(fe); 264 265 dvb_usb_set_active_fe(fe, 0); 266 267 return dvb_usb_device_power_ctrl(adap->dev, 0); 268 } 269 270 int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap) 271 { 272 int ret, i; 273 274 /* register all given adapter frontends */ 275 for (i = 0; i < adap->props.num_frontends; i++) { 276 277 if (adap->props.fe[i].frontend_attach == NULL) { 278 err("strange: '%s' #%d,%d " 279 "doesn't want to attach a frontend.", 280 adap->dev->desc->name, adap->id, i); 281 282 return 0; 283 } 284 285 ret = adap->props.fe[i].frontend_attach(adap); 286 if (ret || adap->fe_adap[i].fe == NULL) { 287 /* only print error when there is no FE at all */ 288 if (i == 0) 289 err("no frontend was attached by '%s'", 290 adap->dev->desc->name); 291 292 return 0; 293 } 294 295 adap->fe_adap[i].fe->id = i; 296 297 /* re-assign sleep and wakeup functions */ 298 adap->fe_adap[i].fe_init = adap->fe_adap[i].fe->ops.init; 299 adap->fe_adap[i].fe->ops.init = dvb_usb_fe_wakeup; 300 adap->fe_adap[i].fe_sleep = adap->fe_adap[i].fe->ops.sleep; 301 adap->fe_adap[i].fe->ops.sleep = dvb_usb_fe_sleep; 302 303 if (dvb_register_frontend(&adap->dvb_adap, adap->fe_adap[i].fe)) { 304 err("Frontend %d registration failed.", i); 305 dvb_frontend_detach(adap->fe_adap[i].fe); 306 adap->fe_adap[i].fe = NULL; 307 /* In error case, do not try register more FEs, 308 * still leaving already registered FEs alive. */ 309 if (i == 0) 310 return -ENODEV; 311 else 312 return 0; 313 } 314 315 /* only attach the tuner if the demod is there */ 316 if (adap->props.fe[i].tuner_attach != NULL) 317 adap->props.fe[i].tuner_attach(adap); 318 319 adap->num_frontends_initialized++; 320 } 321 322 dvb_create_media_graph(&adap->dvb_adap); 323 324 return 0; 325 } 326 327 int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap) 328 { 329 int i = adap->num_frontends_initialized - 1; 330 331 /* unregister all given adapter frontends */ 332 for (; i >= 0; i--) { 333 if (adap->fe_adap[i].fe != NULL) { 334 dvb_unregister_frontend(adap->fe_adap[i].fe); 335 dvb_frontend_detach(adap->fe_adap[i].fe); 336 } 337 } 338 adap->num_frontends_initialized = 0; 339 340 return 0; 341 } 342