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/v4l2-mc.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 = v4l2_mc_usb_media_device_init(udev, d->desc->name); 107 108 dvb_register_media_controller(&adap->dvb_adap, mdev); 109 110 dev_info(&d->udev->dev, "media controller created\n"); 111 #endif 112 return 0; 113 } 114 115 static int dvb_usb_media_device_register(struct dvb_usb_adapter *adap) 116 { 117 #ifdef CONFIG_MEDIA_CONTROLLER_DVB 118 return media_device_register(adap->dvb_adap.mdev); 119 #else 120 return 0; 121 #endif 122 } 123 124 static void dvb_usb_media_device_unregister(struct dvb_usb_adapter *adap) 125 { 126 #ifdef CONFIG_MEDIA_CONTROLLER_DVB 127 if (!adap->dvb_adap.mdev) 128 return; 129 130 media_device_unregister(adap->dvb_adap.mdev); 131 media_device_cleanup(adap->dvb_adap.mdev); 132 kfree(adap->dvb_adap.mdev); 133 adap->dvb_adap.mdev = NULL; 134 #endif 135 } 136 137 int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap, short *adapter_nums) 138 { 139 int i; 140 int ret = dvb_register_adapter(&adap->dvb_adap, adap->dev->desc->name, 141 adap->dev->owner, &adap->dev->udev->dev, 142 adapter_nums); 143 144 if (ret < 0) { 145 deb_info("dvb_register_adapter failed: error %d", ret); 146 goto err; 147 } 148 adap->dvb_adap.priv = adap; 149 150 ret = dvb_usb_media_device_init(adap); 151 if (ret < 0) { 152 deb_info("dvb_usb_media_device_init failed: error %d", ret); 153 goto err_mc; 154 } 155 156 if (adap->dev->props.read_mac_address) { 157 if (adap->dev->props.read_mac_address(adap->dev, adap->dvb_adap.proposed_mac) == 0) 158 info("MAC address: %pM", adap->dvb_adap.proposed_mac); 159 else 160 err("MAC address reading failed."); 161 } 162 163 164 adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING; 165 adap->demux.priv = adap; 166 167 adap->demux.filternum = 0; 168 for (i = 0; i < adap->props.num_frontends; i++) { 169 if (adap->demux.filternum < adap->fe_adap[i].max_feed_count) 170 adap->demux.filternum = adap->fe_adap[i].max_feed_count; 171 } 172 adap->demux.feednum = adap->demux.filternum; 173 adap->demux.start_feed = dvb_usb_start_feed; 174 adap->demux.stop_feed = dvb_usb_stop_feed; 175 adap->demux.write_to_decoder = NULL; 176 if ((ret = dvb_dmx_init(&adap->demux)) < 0) { 177 err("dvb_dmx_init failed: error %d", ret); 178 goto err_dmx; 179 } 180 181 adap->dmxdev.filternum = adap->demux.filternum; 182 adap->dmxdev.demux = &adap->demux.dmx; 183 adap->dmxdev.capabilities = 0; 184 if ((ret = dvb_dmxdev_init(&adap->dmxdev, &adap->dvb_adap)) < 0) { 185 err("dvb_dmxdev_init failed: error %d", ret); 186 goto err_dmx_dev; 187 } 188 189 if ((ret = dvb_net_init(&adap->dvb_adap, &adap->dvb_net, 190 &adap->demux.dmx)) < 0) { 191 err("dvb_net_init failed: error %d", ret); 192 goto err_net_init; 193 } 194 195 adap->state |= DVB_USB_ADAP_STATE_DVB; 196 return 0; 197 198 err_net_init: 199 dvb_dmxdev_release(&adap->dmxdev); 200 err_dmx_dev: 201 dvb_dmx_release(&adap->demux); 202 err_dmx: 203 dvb_usb_media_device_unregister(adap); 204 err_mc: 205 dvb_unregister_adapter(&adap->dvb_adap); 206 err: 207 return ret; 208 } 209 210 int dvb_usb_adapter_dvb_exit(struct dvb_usb_adapter *adap) 211 { 212 if (adap->state & DVB_USB_ADAP_STATE_DVB) { 213 deb_info("unregistering DVB part\n"); 214 dvb_net_release(&adap->dvb_net); 215 adap->demux.dmx.close(&adap->demux.dmx); 216 dvb_dmxdev_release(&adap->dmxdev); 217 dvb_dmx_release(&adap->demux); 218 dvb_usb_media_device_unregister(adap); 219 dvb_unregister_adapter(&adap->dvb_adap); 220 adap->state &= ~DVB_USB_ADAP_STATE_DVB; 221 } 222 return 0; 223 } 224 225 static int dvb_usb_set_active_fe(struct dvb_frontend *fe, int onoff) 226 { 227 struct dvb_usb_adapter *adap = fe->dvb->priv; 228 229 int ret = (adap->props.frontend_ctrl) ? 230 adap->props.frontend_ctrl(fe, onoff) : 0; 231 232 if (ret < 0) { 233 err("frontend_ctrl request failed"); 234 return ret; 235 } 236 if (onoff) 237 adap->active_fe = fe->id; 238 239 return 0; 240 } 241 242 static int dvb_usb_fe_wakeup(struct dvb_frontend *fe) 243 { 244 struct dvb_usb_adapter *adap = fe->dvb->priv; 245 246 dvb_usb_device_power_ctrl(adap->dev, 1); 247 248 dvb_usb_set_active_fe(fe, 1); 249 250 if (adap->fe_adap[fe->id].fe_init) 251 adap->fe_adap[fe->id].fe_init(fe); 252 253 return 0; 254 } 255 256 static int dvb_usb_fe_sleep(struct dvb_frontend *fe) 257 { 258 struct dvb_usb_adapter *adap = fe->dvb->priv; 259 260 if (adap->fe_adap[fe->id].fe_sleep) 261 adap->fe_adap[fe->id].fe_sleep(fe); 262 263 dvb_usb_set_active_fe(fe, 0); 264 265 return dvb_usb_device_power_ctrl(adap->dev, 0); 266 } 267 268 int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap) 269 { 270 int ret, i; 271 272 /* register all given adapter frontends */ 273 for (i = 0; i < adap->props.num_frontends; i++) { 274 275 if (adap->props.fe[i].frontend_attach == NULL) { 276 err("strange: '%s' #%d,%d " 277 "doesn't want to attach a frontend.", 278 adap->dev->desc->name, adap->id, i); 279 280 return 0; 281 } 282 283 ret = adap->props.fe[i].frontend_attach(adap); 284 if (ret || adap->fe_adap[i].fe == NULL) { 285 /* only print error when there is no FE at all */ 286 if (i == 0) 287 err("no frontend was attached by '%s'", 288 adap->dev->desc->name); 289 290 return 0; 291 } 292 293 adap->fe_adap[i].fe->id = i; 294 295 /* re-assign sleep and wakeup functions */ 296 adap->fe_adap[i].fe_init = adap->fe_adap[i].fe->ops.init; 297 adap->fe_adap[i].fe->ops.init = dvb_usb_fe_wakeup; 298 adap->fe_adap[i].fe_sleep = adap->fe_adap[i].fe->ops.sleep; 299 adap->fe_adap[i].fe->ops.sleep = dvb_usb_fe_sleep; 300 301 if (dvb_register_frontend(&adap->dvb_adap, adap->fe_adap[i].fe)) { 302 err("Frontend %d registration failed.", i); 303 dvb_frontend_detach(adap->fe_adap[i].fe); 304 adap->fe_adap[i].fe = NULL; 305 /* In error case, do not try register more FEs, 306 * still leaving already registered FEs alive. */ 307 if (i == 0) 308 return -ENODEV; 309 else 310 return 0; 311 } 312 313 /* only attach the tuner if the demod is there */ 314 if (adap->props.fe[i].tuner_attach != NULL) 315 adap->props.fe[i].tuner_attach(adap); 316 317 adap->num_frontends_initialized++; 318 } 319 if (ret) 320 return ret; 321 322 ret = dvb_create_media_graph(&adap->dvb_adap, true); 323 if (ret) 324 return ret; 325 326 ret = dvb_usb_media_device_register(adap); 327 328 return ret; 329 } 330 331 int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap) 332 { 333 int i = adap->num_frontends_initialized - 1; 334 335 /* unregister all given adapter frontends */ 336 for (; i >= 0; i--) { 337 if (adap->fe_adap[i].fe != NULL) { 338 dvb_unregister_frontend(adap->fe_adap[i].fe); 339 dvb_frontend_detach(adap->fe_adap[i].fe); 340 } 341 } 342 adap->num_frontends_initialized = 0; 343 344 return 0; 345 } 346