1/* 2 * tm6000-dvb.c - dvb-t support for TM5600/TM6000/TM6010 USB video capture devices 3 * 4 * Copyright (C) 2007 Michel Ludwig <michel.ludwig@gmail.com> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation version 2 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 18 */ 19 20#include <linux/kernel.h> 21#include <linux/slab.h> 22#include <linux/usb.h> 23 24#include "tm6000.h" 25#include "tm6000-regs.h" 26 27#include "zl10353.h" 28 29#include <media/tuner.h> 30 31#include "tuner-xc2028.h" 32#include "xc5000.h" 33 34MODULE_DESCRIPTION("DVB driver extension module for tm5600/6000/6010 based TV cards"); 35MODULE_AUTHOR("Mauro Carvalho Chehab"); 36MODULE_LICENSE("GPL"); 37 38MODULE_SUPPORTED_DEVICE("{{Trident, tm5600}," 39 "{{Trident, tm6000}," 40 "{{Trident, tm6010}"); 41 42static int debug; 43 44module_param(debug, int, 0644); 45MODULE_PARM_DESC(debug, "enable debug message"); 46 47static inline void print_err_status(struct tm6000_core *dev, 48 int packet, int status) 49{ 50 char *errmsg = "Unknown"; 51 52 switch (status) { 53 case -ENOENT: 54 errmsg = "unlinked synchronuously"; 55 break; 56 case -ECONNRESET: 57 errmsg = "unlinked asynchronuously"; 58 break; 59 case -ENOSR: 60 errmsg = "Buffer error (overrun)"; 61 break; 62 case -EPIPE: 63 errmsg = "Stalled (device not responding)"; 64 break; 65 case -EOVERFLOW: 66 errmsg = "Babble (bad cable?)"; 67 break; 68 case -EPROTO: 69 errmsg = "Bit-stuff error (bad cable?)"; 70 break; 71 case -EILSEQ: 72 errmsg = "CRC/Timeout (could be anything)"; 73 break; 74 case -ETIME: 75 errmsg = "Device does not respond"; 76 break; 77 } 78 if (packet < 0) { 79 dprintk(dev, 1, "URB status %d [%s].\n", 80 status, errmsg); 81 } else { 82 dprintk(dev, 1, "URB packet %d, status %d [%s].\n", 83 packet, status, errmsg); 84 } 85} 86 87static void tm6000_urb_received(struct urb *urb) 88{ 89 int ret; 90 struct tm6000_core *dev = urb->context; 91 92 switch (urb->status) { 93 case 0: 94 case -ETIMEDOUT: 95 break; 96 case -ENOENT: 97 case -ECONNRESET: 98 case -ESHUTDOWN: 99 return; 100 default: 101 print_err_status(dev, 0, urb->status); 102 } 103 104 if (urb->actual_length > 0) 105 dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer, 106 urb->actual_length); 107 108 if (dev->dvb->streams > 0) { 109 ret = usb_submit_urb(urb, GFP_ATOMIC); 110 if (ret < 0) { 111 printk(KERN_ERR "tm6000: error %s\n", __func__); 112 kfree(urb->transfer_buffer); 113 usb_free_urb(urb); 114 } 115 } 116} 117 118static int tm6000_start_stream(struct tm6000_core *dev) 119{ 120 int ret; 121 unsigned int pipe, size; 122 struct tm6000_dvb *dvb = dev->dvb; 123 124 printk(KERN_INFO "tm6000: got start stream request %s\n", __func__); 125 126 if (dev->mode != TM6000_MODE_DIGITAL) { 127 tm6000_init_digital_mode(dev); 128 dev->mode = TM6000_MODE_DIGITAL; 129 } 130 131 dvb->bulk_urb = usb_alloc_urb(0, GFP_KERNEL); 132 if (dvb->bulk_urb == NULL) { 133 printk(KERN_ERR "tm6000: couldn't allocate urb\n"); 134 return -ENOMEM; 135 } 136 137 pipe = usb_rcvbulkpipe(dev->udev, dev->bulk_in.endp->desc.bEndpointAddress 138 & USB_ENDPOINT_NUMBER_MASK); 139 140 size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe)); 141 size = size * 15; /* 512 x 8 or 12 or 15 */ 142 143 dvb->bulk_urb->transfer_buffer = kzalloc(size, GFP_KERNEL); 144 if (dvb->bulk_urb->transfer_buffer == NULL) { 145 usb_free_urb(dvb->bulk_urb); 146 printk(KERN_ERR "tm6000: couldn't allocate transfer buffer!\n"); 147 return -ENOMEM; 148 } 149 150 usb_fill_bulk_urb(dvb->bulk_urb, dev->udev, pipe, 151 dvb->bulk_urb->transfer_buffer, 152 size, 153 tm6000_urb_received, dev); 154 155 ret = usb_clear_halt(dev->udev, pipe); 156 if (ret < 0) { 157 printk(KERN_ERR "tm6000: error %i in %s during pipe reset\n", 158 ret, __func__); 159 return ret; 160 } else 161 printk(KERN_ERR "tm6000: pipe resetted\n"); 162 163/* mutex_lock(&tm6000_driver.open_close_mutex); */ 164 ret = usb_submit_urb(dvb->bulk_urb, GFP_ATOMIC); 165 166/* mutex_unlock(&tm6000_driver.open_close_mutex); */ 167 if (ret) { 168 printk(KERN_ERR "tm6000: submit of urb failed (error=%i)\n", 169 ret); 170 171 kfree(dvb->bulk_urb->transfer_buffer); 172 usb_free_urb(dvb->bulk_urb); 173 return ret; 174 } 175 176 return 0; 177} 178 179static void tm6000_stop_stream(struct tm6000_core *dev) 180{ 181 struct tm6000_dvb *dvb = dev->dvb; 182 183 if (dvb->bulk_urb) { 184 printk(KERN_INFO "urb killing\n"); 185 usb_kill_urb(dvb->bulk_urb); 186 printk(KERN_INFO "urb buffer free\n"); 187 kfree(dvb->bulk_urb->transfer_buffer); 188 usb_free_urb(dvb->bulk_urb); 189 dvb->bulk_urb = NULL; 190 } 191} 192 193static int tm6000_start_feed(struct dvb_demux_feed *feed) 194{ 195 struct dvb_demux *demux = feed->demux; 196 struct tm6000_core *dev = demux->priv; 197 struct tm6000_dvb *dvb = dev->dvb; 198 printk(KERN_INFO "tm6000: got start feed request %s\n", __func__); 199 200 mutex_lock(&dvb->mutex); 201 if (dvb->streams == 0) { 202 dvb->streams = 1; 203/* mutex_init(&tm6000_dev->streming_mutex); */ 204 tm6000_start_stream(dev); 205 } else 206 ++(dvb->streams); 207 mutex_unlock(&dvb->mutex); 208 209 return 0; 210} 211 212static int tm6000_stop_feed(struct dvb_demux_feed *feed) 213{ 214 struct dvb_demux *demux = feed->demux; 215 struct tm6000_core *dev = demux->priv; 216 struct tm6000_dvb *dvb = dev->dvb; 217 218 printk(KERN_INFO "tm6000: got stop feed request %s\n", __func__); 219 220 mutex_lock(&dvb->mutex); 221 222 printk(KERN_INFO "stream %#x\n", dvb->streams); 223 --(dvb->streams); 224 if (dvb->streams == 0) { 225 printk(KERN_INFO "stop stream\n"); 226 tm6000_stop_stream(dev); 227/* mutex_destroy(&tm6000_dev->streaming_mutex); */ 228 } 229 mutex_unlock(&dvb->mutex); 230/* mutex_destroy(&tm6000_dev->streaming_mutex); */ 231 232 return 0; 233} 234 235static int tm6000_dvb_attach_frontend(struct tm6000_core *dev) 236{ 237 struct tm6000_dvb *dvb = dev->dvb; 238 239 if (dev->caps.has_zl10353) { 240 struct zl10353_config config = { 241 .demod_address = dev->demod_addr, 242 .no_tuner = 1, 243 .parallel_ts = 1, 244 .if2 = 45700, 245 .disable_i2c_gate_ctrl = 1, 246 }; 247 248 dvb->frontend = dvb_attach(zl10353_attach, &config, 249 &dev->i2c_adap); 250 } else { 251 printk(KERN_ERR "tm6000: no frontend defined for the device!\n"); 252 return -1; 253 } 254 255 return (!dvb->frontend) ? -1 : 0; 256} 257 258DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); 259 260static int register_dvb(struct tm6000_core *dev) 261{ 262 int ret = -1; 263 struct tm6000_dvb *dvb = dev->dvb; 264 265 mutex_init(&dvb->mutex); 266 267 dvb->streams = 0; 268 269 /* attach the frontend */ 270 ret = tm6000_dvb_attach_frontend(dev); 271 if (ret < 0) { 272 printk(KERN_ERR "tm6000: couldn't attach the frontend!\n"); 273 goto err; 274 } 275 276 ret = dvb_register_adapter(&dvb->adapter, "Trident TVMaster 6000 DVB-T", 277 THIS_MODULE, &dev->udev->dev, adapter_nr); 278 dvb->adapter.priv = dev; 279 280 if (dvb->frontend) { 281 switch (dev->tuner_type) { 282 case TUNER_XC2028: { 283 struct xc2028_config cfg = { 284 .i2c_adap = &dev->i2c_adap, 285 .i2c_addr = dev->tuner_addr, 286 }; 287 288 dvb->frontend->callback = tm6000_tuner_callback; 289 ret = dvb_register_frontend(&dvb->adapter, dvb->frontend); 290 if (ret < 0) { 291 printk(KERN_ERR 292 "tm6000: couldn't register frontend\n"); 293 goto adapter_err; 294 } 295 296 if (!dvb_attach(xc2028_attach, dvb->frontend, &cfg)) { 297 printk(KERN_ERR "tm6000: couldn't register " 298 "frontend (xc3028)\n"); 299 ret = -EINVAL; 300 goto frontend_err; 301 } 302 printk(KERN_INFO "tm6000: XC2028/3028 asked to be " 303 "attached to frontend!\n"); 304 break; 305 } 306 case TUNER_XC5000: { 307 struct xc5000_config cfg = { 308 .i2c_address = dev->tuner_addr, 309 }; 310 311 dvb->frontend->callback = tm6000_xc5000_callback; 312 ret = dvb_register_frontend(&dvb->adapter, dvb->frontend); 313 if (ret < 0) { 314 printk(KERN_ERR 315 "tm6000: couldn't register frontend\n"); 316 goto adapter_err; 317 } 318 319 if (!dvb_attach(xc5000_attach, dvb->frontend, &dev->i2c_adap, &cfg)) { 320 printk(KERN_ERR "tm6000: couldn't register " 321 "frontend (xc5000)\n"); 322 ret = -EINVAL; 323 goto frontend_err; 324 } 325 printk(KERN_INFO "tm6000: XC5000 asked to be " 326 "attached to frontend!\n"); 327 break; 328 } 329 } 330 } else 331 printk(KERN_ERR "tm6000: no frontend found\n"); 332 333 dvb->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING 334 | DMX_MEMORY_BASED_FILTERING; 335 dvb->demux.priv = dev; 336 dvb->demux.filternum = 8; 337 dvb->demux.feednum = 8; 338 dvb->demux.start_feed = tm6000_start_feed; 339 dvb->demux.stop_feed = tm6000_stop_feed; 340 dvb->demux.write_to_decoder = NULL; 341 ret = dvb_dmx_init(&dvb->demux); 342 if (ret < 0) { 343 printk(KERN_ERR "tm6000: dvb_dmx_init failed (errno = %d)\n", ret); 344 goto frontend_err; 345 } 346 347 dvb->dmxdev.filternum = dev->dvb->demux.filternum; 348 dvb->dmxdev.demux = &dev->dvb->demux.dmx; 349 dvb->dmxdev.capabilities = 0; 350 351 ret = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter); 352 if (ret < 0) { 353 printk(KERN_ERR "tm6000: dvb_dmxdev_init failed (errno = %d)\n", ret); 354 goto dvb_dmx_err; 355 } 356 357 return 0; 358 359dvb_dmx_err: 360 dvb_dmx_release(&dvb->demux); 361frontend_err: 362 if (dvb->frontend) { 363 dvb_unregister_frontend(dvb->frontend); 364 dvb_frontend_detach(dvb->frontend); 365 } 366adapter_err: 367 dvb_unregister_adapter(&dvb->adapter); 368err: 369 return ret; 370} 371 372static void unregister_dvb(struct tm6000_core *dev) 373{ 374 struct tm6000_dvb *dvb = dev->dvb; 375 376 if (dvb->bulk_urb != NULL) { 377 struct urb *bulk_urb = dvb->bulk_urb; 378 379 kfree(bulk_urb->transfer_buffer); 380 bulk_urb->transfer_buffer = NULL; 381 usb_unlink_urb(bulk_urb); 382 usb_free_urb(bulk_urb); 383 } 384 385/* mutex_lock(&tm6000_driver.open_close_mutex); */ 386 if (dvb->frontend) { 387 dvb_unregister_frontend(dvb->frontend); 388 dvb_frontend_detach(dvb->frontend); 389 } 390 391 dvb_dmxdev_release(&dvb->dmxdev); 392 dvb_dmx_release(&dvb->demux); 393 dvb_unregister_adapter(&dvb->adapter); 394 mutex_destroy(&dvb->mutex); 395/* mutex_unlock(&tm6000_driver.open_close_mutex); */ 396} 397 398static int dvb_init(struct tm6000_core *dev) 399{ 400 struct tm6000_dvb *dvb; 401 int rc; 402 403 if (!dev) 404 return 0; 405 406 if (!dev->caps.has_dvb) 407 return 0; 408 409 if (dev->udev->speed == USB_SPEED_FULL) { 410 printk(KERN_INFO "This USB2.0 device cannot be run on a USB1.1 port. (it lacks a hardware PID filter)\n"); 411 return 0; 412 } 413 414 dvb = kzalloc(sizeof(struct tm6000_dvb), GFP_KERNEL); 415 if (!dvb) { 416 printk(KERN_INFO "Cannot allocate memory\n"); 417 return -ENOMEM; 418 } 419 420 dev->dvb = dvb; 421 422 rc = register_dvb(dev); 423 if (rc < 0) { 424 kfree(dvb); 425 dev->dvb = NULL; 426 return 0; 427 } 428 429 return 0; 430} 431 432static int dvb_fini(struct tm6000_core *dev) 433{ 434 if (!dev) 435 return 0; 436 437 if (!dev->caps.has_dvb) 438 return 0; 439 440 if (dev->dvb) { 441 unregister_dvb(dev); 442 kfree(dev->dvb); 443 dev->dvb = NULL; 444 } 445 446 return 0; 447} 448 449static struct tm6000_ops dvb_ops = { 450 .type = TM6000_DVB, 451 .name = "TM6000 dvb Extension", 452 .init = dvb_init, 453 .fini = dvb_fini, 454}; 455 456static int __init tm6000_dvb_register(void) 457{ 458 return tm6000_register_extension(&dvb_ops); 459} 460 461static void __exit tm6000_dvb_unregister(void) 462{ 463 tm6000_unregister_extension(&dvb_ops); 464} 465 466module_init(tm6000_dvb_register); 467module_exit(tm6000_dvb_unregister); 468