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 int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap, short *adapter_nums) 98 { 99 int i; 100 int ret = dvb_register_adapter(&adap->dvb_adap, adap->dev->desc->name, 101 adap->dev->owner, &adap->dev->udev->dev, 102 adapter_nums); 103 104 if (ret < 0) { 105 deb_info("dvb_register_adapter failed: error %d", ret); 106 goto err; 107 } 108 adap->dvb_adap.priv = adap; 109 110 if (adap->dev->props.read_mac_address) { 111 if (adap->dev->props.read_mac_address(adap->dev,adap->dvb_adap.proposed_mac) == 0) 112 info("MAC address: %pM",adap->dvb_adap.proposed_mac); 113 else 114 err("MAC address reading failed."); 115 } 116 117 118 adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING; 119 adap->demux.priv = adap; 120 121 adap->demux.filternum = 0; 122 for (i = 0; i < adap->props.num_frontends; i++) { 123 if (adap->demux.filternum < adap->fe_adap[i].max_feed_count) 124 adap->demux.filternum = adap->fe_adap[i].max_feed_count; 125 } 126 adap->demux.feednum = adap->demux.filternum; 127 adap->demux.start_feed = dvb_usb_start_feed; 128 adap->demux.stop_feed = dvb_usb_stop_feed; 129 adap->demux.write_to_decoder = NULL; 130 if ((ret = dvb_dmx_init(&adap->demux)) < 0) { 131 err("dvb_dmx_init failed: error %d",ret); 132 goto err_dmx; 133 } 134 135 adap->dmxdev.filternum = adap->demux.filternum; 136 adap->dmxdev.demux = &adap->demux.dmx; 137 adap->dmxdev.capabilities = 0; 138 if ((ret = dvb_dmxdev_init(&adap->dmxdev, &adap->dvb_adap)) < 0) { 139 err("dvb_dmxdev_init failed: error %d",ret); 140 goto err_dmx_dev; 141 } 142 143 if ((ret = dvb_net_init(&adap->dvb_adap, &adap->dvb_net, 144 &adap->demux.dmx)) < 0) { 145 err("dvb_net_init failed: error %d",ret); 146 goto err_net_init; 147 } 148 149 adap->state |= DVB_USB_ADAP_STATE_DVB; 150 return 0; 151 152 err_net_init: 153 dvb_dmxdev_release(&adap->dmxdev); 154 err_dmx_dev: 155 dvb_dmx_release(&adap->demux); 156 err_dmx: 157 dvb_unregister_adapter(&adap->dvb_adap); 158 err: 159 return ret; 160 } 161 162 int dvb_usb_adapter_dvb_exit(struct dvb_usb_adapter *adap) 163 { 164 if (adap->state & DVB_USB_ADAP_STATE_DVB) { 165 deb_info("unregistering DVB part\n"); 166 dvb_net_release(&adap->dvb_net); 167 adap->demux.dmx.close(&adap->demux.dmx); 168 dvb_dmxdev_release(&adap->dmxdev); 169 dvb_dmx_release(&adap->demux); 170 dvb_unregister_adapter(&adap->dvb_adap); 171 adap->state &= ~DVB_USB_ADAP_STATE_DVB; 172 } 173 return 0; 174 } 175 176 static int dvb_usb_set_active_fe(struct dvb_frontend *fe, int onoff) 177 { 178 struct dvb_usb_adapter *adap = fe->dvb->priv; 179 180 int ret = (adap->props.frontend_ctrl) ? 181 adap->props.frontend_ctrl(fe, onoff) : 0; 182 183 if (ret < 0) { 184 err("frontend_ctrl request failed"); 185 return ret; 186 } 187 if (onoff) 188 adap->active_fe = fe->id; 189 190 return 0; 191 } 192 193 static int dvb_usb_fe_wakeup(struct dvb_frontend *fe) 194 { 195 struct dvb_usb_adapter *adap = fe->dvb->priv; 196 197 dvb_usb_device_power_ctrl(adap->dev, 1); 198 199 dvb_usb_set_active_fe(fe, 1); 200 201 if (adap->fe_adap[fe->id].fe_init) 202 adap->fe_adap[fe->id].fe_init(fe); 203 204 return 0; 205 } 206 207 static int dvb_usb_fe_sleep(struct dvb_frontend *fe) 208 { 209 struct dvb_usb_adapter *adap = fe->dvb->priv; 210 211 if (adap->fe_adap[fe->id].fe_sleep) 212 adap->fe_adap[fe->id].fe_sleep(fe); 213 214 dvb_usb_set_active_fe(fe, 0); 215 216 return dvb_usb_device_power_ctrl(adap->dev, 0); 217 } 218 219 int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap) 220 { 221 int ret, i; 222 223 /* register all given adapter frontends */ 224 for (i = 0; i < adap->props.num_frontends; i++) { 225 226 if (adap->props.fe[i].frontend_attach == NULL) { 227 err("strange: '%s' #%d,%d " 228 "doesn't want to attach a frontend.", 229 adap->dev->desc->name, adap->id, i); 230 231 return 0; 232 } 233 234 ret = adap->props.fe[i].frontend_attach(adap); 235 if (ret || adap->fe_adap[i].fe == NULL) { 236 /* only print error when there is no FE at all */ 237 if (i == 0) 238 err("no frontend was attached by '%s'", 239 adap->dev->desc->name); 240 241 return 0; 242 } 243 244 adap->fe_adap[i].fe->id = i; 245 246 /* re-assign sleep and wakeup functions */ 247 adap->fe_adap[i].fe_init = adap->fe_adap[i].fe->ops.init; 248 adap->fe_adap[i].fe->ops.init = dvb_usb_fe_wakeup; 249 adap->fe_adap[i].fe_sleep = adap->fe_adap[i].fe->ops.sleep; 250 adap->fe_adap[i].fe->ops.sleep = dvb_usb_fe_sleep; 251 252 if (dvb_register_frontend(&adap->dvb_adap, adap->fe_adap[i].fe)) { 253 err("Frontend %d registration failed.", i); 254 dvb_frontend_detach(adap->fe_adap[i].fe); 255 adap->fe_adap[i].fe = NULL; 256 /* In error case, do not try register more FEs, 257 * still leaving already registered FEs alive. */ 258 if (i == 0) 259 return -ENODEV; 260 else 261 return 0; 262 } 263 264 /* only attach the tuner if the demod is there */ 265 if (adap->props.fe[i].tuner_attach != NULL) 266 adap->props.fe[i].tuner_attach(adap); 267 268 adap->num_frontends_initialized++; 269 } 270 271 return 0; 272 } 273 274 int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap) 275 { 276 int i = adap->num_frontends_initialized - 1; 277 278 /* unregister all given adapter frontends */ 279 for (; i >= 0; i--) { 280 if (adap->fe_adap[i].fe != NULL) { 281 dvb_unregister_frontend(adap->fe_adap[i].fe); 282 dvb_frontend_detach(adap->fe_adap[i].fe); 283 } 284 } 285 adap->num_frontends_initialized = 0; 286 287 return 0; 288 } 289