2 DVB device driver for em28xx
4 (c) 2008 Mauro Carvalho Chehab <mchehab@infradead.org>
6 (c) 2008 Devin Heitmueller <devin.heitmueller@gmail.com>
7 - Fixes for the driver to properly work with HVR-950
8 - Fixes for the driver to properly work with Pinnacle PCTV HD Pro Stick
9 - Fixes for the driver to properly work with AMD ATI TV Wonder HD 600
11 (c) 2008 Aidan Thornton <makosoft@googlemail.com>
13 Based on cx88-dvb, saa7134-dvb and videobuf-dvb originally written by:
14 (c) 2004, 2005 Chris Pascoe <c.pascoe@itee.uq.edu.au>
15 (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
17 This program is free software; you can redistribute it and/or modify
18 it under the terms of the GNU General Public License as published by
19 the Free Software Foundation; either version 2 of the License.
22 #include <linux/kernel.h>
23 #include <linux/usb.h>
26 #include <media/v4l2-common.h>
27 #include <media/videobuf-vmalloc.h>
33 MODULE_DESCRIPTION("driver for em28xx based DVB cards");
34 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
35 MODULE_LICENSE("GPL");
37 static unsigned int debug;
38 module_param(debug, int, 0644);
39 MODULE_PARM_DESC(debug, "enable debug messages [dvb]");
41 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
43 #define dprintk(level, fmt, arg...) do { \
45 printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg); \
48 #define EM28XX_DVB_NUM_BUFS 5
49 #define EM28XX_DVB_MAX_PACKETS 64
52 struct dvb_frontend *frontend;
54 /* feed count management */
58 /* general boilerplate stuff */
59 struct dvb_adapter adapter;
60 struct dvb_demux demux;
62 struct dmx_frontend fe_hw;
63 struct dmx_frontend fe_mem;
68 static inline void print_err_status(struct em28xx *dev,
69 int packet, int status)
71 char *errmsg = "Unknown";
75 errmsg = "unlinked synchronuously";
78 errmsg = "unlinked asynchronuously";
81 errmsg = "Buffer error (overrun)";
84 errmsg = "Stalled (device not responding)";
87 errmsg = "Babble (bad cable?)";
90 errmsg = "Bit-stuff error (bad cable?)";
93 errmsg = "CRC/Timeout (could be anything)";
96 errmsg = "Device does not respond";
100 dprintk(1, "URB status %d [%s].\n", status, errmsg);
102 dprintk(1, "URB packet %d, status %d [%s].\n",
103 packet, status, errmsg);
107 static inline int dvb_isoc_copy(struct em28xx *dev, struct urb *urb)
114 if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
117 if (urb->status < 0) {
118 print_err_status(dev, -1, urb->status);
119 if (urb->status == -ENOENT)
123 for (i = 0; i < urb->number_of_packets; i++) {
124 int status = urb->iso_frame_desc[i].status;
127 print_err_status(dev, i, status);
128 if (urb->iso_frame_desc[i].status != -EPROTO)
132 dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer +
133 urb->iso_frame_desc[i].offset,
134 urb->iso_frame_desc[i].actual_length);
140 static int start_streaming(struct em28xx_dvb *dvb)
143 struct em28xx *dev = dvb->adapter.priv;
144 int max_dvb_packet_size;
146 usb_set_interface(dev->udev, 0, 1);
147 rc = em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
151 max_dvb_packet_size = em28xx_isoc_dvb_max_packetsize(dev);
153 return em28xx_init_isoc(dev, EM28XX_DVB_MAX_PACKETS,
154 EM28XX_DVB_NUM_BUFS, max_dvb_packet_size,
158 static int stop_streaming(struct em28xx_dvb *dvb)
160 struct em28xx *dev = dvb->adapter.priv;
162 em28xx_uninit_isoc(dev);
164 em28xx_set_mode(dev, EM28XX_SUSPEND);
169 static int start_feed(struct dvb_demux_feed *feed)
171 struct dvb_demux *demux = feed->demux;
172 struct em28xx_dvb *dvb = demux->priv;
175 if (!demux->dmx.frontend)
178 mutex_lock(&dvb->lock);
182 if (dvb->nfeeds == 1) {
183 ret = start_streaming(dvb);
188 mutex_unlock(&dvb->lock);
192 static int stop_feed(struct dvb_demux_feed *feed)
194 struct dvb_demux *demux = feed->demux;
195 struct em28xx_dvb *dvb = demux->priv;
198 mutex_lock(&dvb->lock);
201 if (0 == dvb->nfeeds)
202 err = stop_streaming(dvb);
204 mutex_unlock(&dvb->lock);
210 /* ------------------------------------------------------------------ */
211 static int em28xx_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire)
213 struct em28xx *dev = fe->dvb->priv;
216 return em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
218 return em28xx_set_mode(dev, EM28XX_SUSPEND);
221 /* ------------------------------------------------------------------ */
223 static struct lgdt330x_config em2880_lgdt3303_dev = {
224 .demod_address = 0x0e,
225 .demod_chip = LGDT3303,
228 static struct zl10353_config em28xx_zl10353_with_xc3028 = {
229 .demod_address = (0x1e >> 1),
235 static struct s5h1409_config em28xx_s5h1409_with_xc3028 = {
236 .demod_address = 0x32 >> 1,
237 .output_mode = S5H1409_PARALLEL_OUTPUT,
238 .gpio = S5H1409_GPIO_OFF,
239 .inversion = S5H1409_INVERSION_OFF,
240 .status_mode = S5H1409_DEMODLOCKING,
241 .mpeg_timing = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK
244 #ifdef EM28XX_DRX397XD_SUPPORT
245 /* [TODO] djh - not sure yet what the device config needs to contain */
246 static struct drx397xD_config em28xx_drx397xD_with_xc3028 = {
247 .demod_address = (0xe0 >> 1),
251 /* ------------------------------------------------------------------ */
253 static int attach_xc3028(u8 addr, struct em28xx *dev)
255 struct dvb_frontend *fe;
256 struct xc2028_config cfg;
258 memset(&cfg, 0, sizeof(cfg));
259 cfg.i2c_adap = &dev->i2c_adap;
262 if (!dev->dvb->frontend) {
263 printk(KERN_ERR "%s/2: dvb frontend not attached. "
264 "Can't attach xc3028\n",
269 fe = dvb_attach(xc2028_attach, dev->dvb->frontend, &cfg);
271 printk(KERN_ERR "%s/2: xc3028 attach failed\n",
273 dvb_frontend_detach(dev->dvb->frontend);
274 dev->dvb->frontend = NULL;
278 printk(KERN_INFO "%s/2: xc3028 attached\n", dev->name);
283 /* ------------------------------------------------------------------ */
285 static int register_dvb(struct em28xx_dvb *dvb,
286 struct module *module,
288 struct device *device)
292 mutex_init(&dvb->lock);
294 /* register adapter */
295 result = dvb_register_adapter(&dvb->adapter, dev->name, module, device,
298 printk(KERN_WARNING "%s: dvb_register_adapter failed (errno = %d)\n",
303 /* Ensure all frontends negotiate bus access */
304 dvb->frontend->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
306 dvb->adapter.priv = dev;
308 /* register frontend */
309 result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
311 printk(KERN_WARNING "%s: dvb_register_frontend failed (errno = %d)\n",
316 /* register demux stuff */
317 dvb->demux.dmx.capabilities =
318 DMX_TS_FILTERING | DMX_SECTION_FILTERING |
319 DMX_MEMORY_BASED_FILTERING;
320 dvb->demux.priv = dvb;
321 dvb->demux.filternum = 256;
322 dvb->demux.feednum = 256;
323 dvb->demux.start_feed = start_feed;
324 dvb->demux.stop_feed = stop_feed;
326 result = dvb_dmx_init(&dvb->demux);
328 printk(KERN_WARNING "%s: dvb_dmx_init failed (errno = %d)\n",
333 dvb->dmxdev.filternum = 256;
334 dvb->dmxdev.demux = &dvb->demux.dmx;
335 dvb->dmxdev.capabilities = 0;
336 result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
338 printk(KERN_WARNING "%s: dvb_dmxdev_init failed (errno = %d)\n",
343 dvb->fe_hw.source = DMX_FRONTEND_0;
344 result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
346 printk(KERN_WARNING "%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
351 dvb->fe_mem.source = DMX_MEMORY_FE;
352 result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
354 printk(KERN_WARNING "%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
359 result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
361 printk(KERN_WARNING "%s: connect_frontend failed (errno = %d)\n",
366 /* register network adapter */
367 dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
371 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
373 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
375 dvb_dmxdev_release(&dvb->dmxdev);
377 dvb_dmx_release(&dvb->demux);
379 dvb_unregister_frontend(dvb->frontend);
381 dvb_frontend_detach(dvb->frontend);
382 dvb_unregister_adapter(&dvb->adapter);
387 static void unregister_dvb(struct em28xx_dvb *dvb)
389 dvb_net_release(&dvb->net);
390 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
391 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
392 dvb_dmxdev_release(&dvb->dmxdev);
393 dvb_dmx_release(&dvb->demux);
394 dvb_unregister_frontend(dvb->frontend);
395 dvb_frontend_detach(dvb->frontend);
396 dvb_unregister_adapter(&dvb->adapter);
400 static int dvb_init(struct em28xx *dev)
403 struct em28xx_dvb *dvb;
405 if (!dev->board.has_dvb) {
406 /* This device does not support the extension */
410 dvb = kzalloc(sizeof(struct em28xx_dvb), GFP_KERNEL);
413 printk(KERN_INFO "em28xx_dvb: memory allocation failed\n");
418 em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
420 switch (dev->model) {
421 case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850:
422 case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950:
423 case EM2880_BOARD_PINNACLE_PCTV_HD_PRO:
424 case EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600:
425 dvb->frontend = dvb_attach(lgdt330x_attach,
426 &em2880_lgdt3303_dev,
428 if (attach_xc3028(0x61, dev) < 0) {
433 case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
434 case EM2880_BOARD_TERRATEC_HYBRID_XS:
435 case EM2880_BOARD_KWORLD_DVB_310U:
436 case EM2880_BOARD_EMPIRE_DUAL_TV:
437 dvb->frontend = dvb_attach(zl10353_attach,
438 &em28xx_zl10353_with_xc3028,
440 if (attach_xc3028(0x61, dev) < 0) {
445 case EM2883_BOARD_KWORLD_HYBRID_330U:
446 dvb->frontend = dvb_attach(s5h1409_attach,
447 &em28xx_s5h1409_with_xc3028,
449 if (attach_xc3028(0x61, dev) < 0) {
454 case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2:
455 #ifdef EM28XX_DRX397XD_SUPPORT
456 /* We don't have the config structure properly populated, so
457 this is commented out for now */
458 dvb->frontend = dvb_attach(drx397xD_attach,
459 &em28xx_drx397xD_with_xc3028,
461 if (attach_xc3028(0x61, dev) < 0) {
468 printk(KERN_ERR "%s/2: The frontend of your DVB/ATSC card"
469 " isn't supported yet\n",
473 if (NULL == dvb->frontend) {
475 "%s/2: frontend initialization failed\n",
480 /* define general-purpose callback pointer */
481 dvb->frontend->callback = em28xx_tuner_callback;
483 /* register everything */
484 result = register_dvb(dvb, THIS_MODULE, dev, &dev->udev->dev);
489 em28xx_set_mode(dev, EM28XX_SUSPEND);
490 printk(KERN_INFO "Successfully loaded em28xx-dvb\n");
494 em28xx_set_mode(dev, EM28XX_SUSPEND);
500 static int dvb_fini(struct em28xx *dev)
502 if (!dev->board.has_dvb) {
503 /* This device does not support the extension */
508 unregister_dvb(dev->dvb);
515 static struct em28xx_ops dvb_ops = {
517 .name = "Em28xx dvb Extension",
522 static int __init em28xx_dvb_register(void)
524 return em28xx_register_extension(&dvb_ops);
527 static void __exit em28xx_dvb_unregister(void)
529 em28xx_unregister_extension(&dvb_ops);
532 module_init(em28xx_dvb_register);
533 module_exit(em28xx_dvb_unregister);