1 /* dvb-usb-dvb.c is part of the DVB USB library. 2 * 3 * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@posteo.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 #include <media/media-device.h> 11 12 /* does the complete input transfer handling */ 13 static int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff) 14 { 15 struct dvb_usb_adapter *adap = dvbdmxfeed->demux->priv; 16 int newfeedcount, ret; 17 18 if (adap == NULL) 19 return -ENODEV; 20 21 if ((adap->active_fe < 0) || 22 (adap->active_fe >= adap->num_frontends_initialized)) { 23 return -EINVAL; 24 } 25 26 newfeedcount = adap->feedcount + (onoff ? 1 : -1); 27 28 /* stop feed before setting a new pid if there will be no pid anymore */ 29 if (newfeedcount == 0) { 30 deb_ts("stop feeding\n"); 31 usb_urb_kill(&adap->fe_adap[adap->active_fe].stream); 32 33 if (adap->props.fe[adap->active_fe].streaming_ctrl != NULL) { 34 ret = adap->props.fe[adap->active_fe].streaming_ctrl(adap, 0); 35 if (ret < 0) { 36 err("error while stopping stream."); 37 return ret; 38 } 39 } 40 } 41 42 adap->feedcount = newfeedcount; 43 44 /* activate the pid on the device specific pid_filter */ 45 deb_ts("setting pid (%s): %5d %04x at index %d '%s'\n", 46 adap->fe_adap[adap->active_fe].pid_filtering ? 47 "yes" : "no", dvbdmxfeed->pid, dvbdmxfeed->pid, 48 dvbdmxfeed->index, onoff ? "on" : "off"); 49 if (adap->props.fe[adap->active_fe].caps & DVB_USB_ADAP_HAS_PID_FILTER && 50 adap->fe_adap[adap->active_fe].pid_filtering && 51 adap->props.fe[adap->active_fe].pid_filter != NULL) 52 adap->props.fe[adap->active_fe].pid_filter(adap, dvbdmxfeed->index, dvbdmxfeed->pid, onoff); 53 54 /* start the feed if this was the first feed and there is still a feed 55 * for reception. 56 */ 57 if (adap->feedcount == onoff && adap->feedcount > 0) { 58 deb_ts("submitting all URBs\n"); 59 usb_urb_submit(&adap->fe_adap[adap->active_fe].stream); 60 61 deb_ts("controlling pid parser\n"); 62 if (adap->props.fe[adap->active_fe].caps & DVB_USB_ADAP_HAS_PID_FILTER && 63 adap->props.fe[adap->active_fe].caps & 64 DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF && 65 adap->props.fe[adap->active_fe].pid_filter_ctrl != NULL) { 66 ret = adap->props.fe[adap->active_fe].pid_filter_ctrl(adap, 67 adap->fe_adap[adap->active_fe].pid_filtering); 68 if (ret < 0) { 69 err("could not handle pid_parser"); 70 return ret; 71 } 72 } 73 deb_ts("start feeding\n"); 74 if (adap->props.fe[adap->active_fe].streaming_ctrl != NULL) { 75 ret = adap->props.fe[adap->active_fe].streaming_ctrl(adap, 1); 76 if (ret < 0) { 77 err("error while enabling fifo."); 78 return ret; 79 } 80 } 81 82 } 83 return 0; 84 } 85 86 static 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 93 static 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 99 static 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 } 118 119 static 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 } 127 128 static 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 media_device_unregister(adap->dvb_adap.mdev); 135 media_device_cleanup(adap->dvb_adap.mdev); 136 kfree(adap->dvb_adap.mdev); 137 adap->dvb_adap.mdev = NULL; 138 #endif 139 } 140 141 int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap, short *adapter_nums) 142 { 143 int i; 144 int ret = dvb_register_adapter(&adap->dvb_adap, adap->dev->desc->name, 145 adap->dev->owner, &adap->dev->udev->dev, 146 adapter_nums); 147 148 if (ret < 0) { 149 deb_info("dvb_register_adapter failed: error %d", ret); 150 goto err; 151 } 152 adap->dvb_adap.priv = adap; 153 154 ret = dvb_usb_media_device_init(adap); 155 if (ret < 0) { 156 deb_info("dvb_usb_media_device_init failed: error %d", ret); 157 goto err_mc; 158 } 159 160 if (adap->dev->props.read_mac_address) { 161 if (adap->dev->props.read_mac_address(adap->dev, adap->dvb_adap.proposed_mac) == 0) 162 info("MAC address: %pM", adap->dvb_adap.proposed_mac); 163 else 164 err("MAC address reading failed."); 165 } 166 167 168 adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING; 169 adap->demux.priv = adap; 170 171 adap->demux.filternum = 0; 172 for (i = 0; i < adap->props.num_frontends; i++) { 173 if (adap->demux.filternum < adap->fe_adap[i].max_feed_count) 174 adap->demux.filternum = adap->fe_adap[i].max_feed_count; 175 } 176 adap->demux.feednum = adap->demux.filternum; 177 adap->demux.start_feed = dvb_usb_start_feed; 178 adap->demux.stop_feed = dvb_usb_stop_feed; 179 adap->demux.write_to_decoder = NULL; 180 if ((ret = dvb_dmx_init(&adap->demux)) < 0) { 181 err("dvb_dmx_init failed: error %d", ret); 182 goto err_dmx; 183 } 184 185 adap->dmxdev.filternum = adap->demux.filternum; 186 adap->dmxdev.demux = &adap->demux.dmx; 187 adap->dmxdev.capabilities = 0; 188 if ((ret = dvb_dmxdev_init(&adap->dmxdev, &adap->dvb_adap)) < 0) { 189 err("dvb_dmxdev_init failed: error %d", ret); 190 goto err_dmx_dev; 191 } 192 193 if ((ret = dvb_net_init(&adap->dvb_adap, &adap->dvb_net, 194 &adap->demux.dmx)) < 0) { 195 err("dvb_net_init failed: error %d", ret); 196 goto err_net_init; 197 } 198 199 adap->state |= DVB_USB_ADAP_STATE_DVB; 200 return 0; 201 202 err_net_init: 203 dvb_dmxdev_release(&adap->dmxdev); 204 err_dmx_dev: 205 dvb_dmx_release(&adap->demux); 206 err_dmx: 207 dvb_usb_media_device_unregister(adap); 208 err_mc: 209 dvb_unregister_adapter(&adap->dvb_adap); 210 err: 211 return ret; 212 } 213 214 int dvb_usb_adapter_dvb_exit(struct dvb_usb_adapter *adap) 215 { 216 if (adap->state & DVB_USB_ADAP_STATE_DVB) { 217 deb_info("unregistering DVB part\n"); 218 dvb_net_release(&adap->dvb_net); 219 adap->demux.dmx.close(&adap->demux.dmx); 220 dvb_dmxdev_release(&adap->dmxdev); 221 dvb_dmx_release(&adap->demux); 222 dvb_usb_media_device_unregister(adap); 223 dvb_unregister_adapter(&adap->dvb_adap); 224 adap->state &= ~DVB_USB_ADAP_STATE_DVB; 225 } 226 return 0; 227 } 228 229 static int dvb_usb_set_active_fe(struct dvb_frontend *fe, int onoff) 230 { 231 struct dvb_usb_adapter *adap = fe->dvb->priv; 232 233 int ret = (adap->props.frontend_ctrl) ? 234 adap->props.frontend_ctrl(fe, onoff) : 0; 235 236 if (ret < 0) { 237 err("frontend_ctrl request failed"); 238 return ret; 239 } 240 if (onoff) 241 adap->active_fe = fe->id; 242 243 return 0; 244 } 245 246 static int dvb_usb_fe_wakeup(struct dvb_frontend *fe) 247 { 248 struct dvb_usb_adapter *adap = fe->dvb->priv; 249 250 dvb_usb_device_power_ctrl(adap->dev, 1); 251 252 dvb_usb_set_active_fe(fe, 1); 253 254 if (adap->fe_adap[fe->id].fe_init) 255 adap->fe_adap[fe->id].fe_init(fe); 256 257 return 0; 258 } 259 260 static int dvb_usb_fe_sleep(struct dvb_frontend *fe) 261 { 262 struct dvb_usb_adapter *adap = fe->dvb->priv; 263 264 if (adap->fe_adap[fe->id].fe_sleep) 265 adap->fe_adap[fe->id].fe_sleep(fe); 266 267 dvb_usb_set_active_fe(fe, 0); 268 269 return dvb_usb_device_power_ctrl(adap->dev, 0); 270 } 271 272 int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap) 273 { 274 int ret, i; 275 276 /* register all given adapter frontends */ 277 for (i = 0; i < adap->props.num_frontends; i++) { 278 279 if (adap->props.fe[i].frontend_attach == NULL) { 280 err("strange: '%s' #%d,%d " 281 "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 if (ret) 324 return ret; 325 326 ret = dvb_create_media_graph(&adap->dvb_adap, true); 327 if (ret) 328 return ret; 329 330 ret = dvb_usb_media_device_register(adap); 331 332 return ret; 333 } 334 335 int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap) 336 { 337 int i = adap->num_frontends_initialized - 1; 338 339 /* unregister all given adapter frontends */ 340 for (; i >= 0; i--) { 341 if (adap->fe_adap[i].fe != NULL) { 342 dvb_unregister_frontend(adap->fe_adap[i].fe); 343 dvb_frontend_detach(adap->fe_adap[i].fe); 344 } 345 } 346 adap->num_frontends_initialized = 0; 347 348 return 0; 349 } 350