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>
28 #include <media/tuner.h>
29 #include "tuner-simple.h"
35 MODULE_DESCRIPTION("driver for em28xx based DVB cards");
36 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
37 MODULE_LICENSE("GPL");
39 static unsigned int debug;
40 module_param(debug, int, 0644);
41 MODULE_PARM_DESC(debug, "enable debug messages [dvb]");
43 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
45 #define dprintk(level, fmt, arg...) do { \
47 printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg); \
50 #define EM28XX_DVB_NUM_BUFS 5
51 #define EM28XX_DVB_MAX_PACKETS 64
54 struct dvb_frontend *frontend;
56 /* feed count management */
60 /* general boilerplate stuff */
61 struct dvb_adapter adapter;
62 struct dvb_demux demux;
64 struct dmx_frontend fe_hw;
65 struct dmx_frontend fe_mem;
70 static inline void print_err_status(struct em28xx *dev,
71 int packet, int status)
73 char *errmsg = "Unknown";
77 errmsg = "unlinked synchronuously";
80 errmsg = "unlinked asynchronuously";
83 errmsg = "Buffer error (overrun)";
86 errmsg = "Stalled (device not responding)";
89 errmsg = "Babble (bad cable?)";
92 errmsg = "Bit-stuff error (bad cable?)";
95 errmsg = "CRC/Timeout (could be anything)";
98 errmsg = "Device does not respond";
102 dprintk(1, "URB status %d [%s].\n", status, errmsg);
104 dprintk(1, "URB packet %d, status %d [%s].\n",
105 packet, status, errmsg);
109 static inline int dvb_isoc_copy(struct em28xx *dev, struct urb *urb)
116 if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
119 if (urb->status < 0) {
120 print_err_status(dev, -1, urb->status);
121 if (urb->status == -ENOENT)
125 for (i = 0; i < urb->number_of_packets; i++) {
126 int status = urb->iso_frame_desc[i].status;
129 print_err_status(dev, i, status);
130 if (urb->iso_frame_desc[i].status != -EPROTO)
134 dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer +
135 urb->iso_frame_desc[i].offset,
136 urb->iso_frame_desc[i].actual_length);
142 static int start_streaming(struct em28xx_dvb *dvb)
145 struct em28xx *dev = dvb->adapter.priv;
146 int max_dvb_packet_size;
148 usb_set_interface(dev->udev, 0, 1);
149 rc = em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
153 max_dvb_packet_size = em28xx_isoc_dvb_max_packetsize(dev);
155 return em28xx_init_isoc(dev, EM28XX_DVB_MAX_PACKETS,
156 EM28XX_DVB_NUM_BUFS, max_dvb_packet_size,
160 static int stop_streaming(struct em28xx_dvb *dvb)
162 struct em28xx *dev = dvb->adapter.priv;
164 em28xx_uninit_isoc(dev);
166 em28xx_set_mode(dev, EM28XX_SUSPEND);
171 static int start_feed(struct dvb_demux_feed *feed)
173 struct dvb_demux *demux = feed->demux;
174 struct em28xx_dvb *dvb = demux->priv;
177 if (!demux->dmx.frontend)
180 mutex_lock(&dvb->lock);
184 if (dvb->nfeeds == 1) {
185 ret = start_streaming(dvb);
190 mutex_unlock(&dvb->lock);
194 static int stop_feed(struct dvb_demux_feed *feed)
196 struct dvb_demux *demux = feed->demux;
197 struct em28xx_dvb *dvb = demux->priv;
200 mutex_lock(&dvb->lock);
203 if (0 == dvb->nfeeds)
204 err = stop_streaming(dvb);
206 mutex_unlock(&dvb->lock);
212 /* ------------------------------------------------------------------ */
213 static int em28xx_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire)
215 struct em28xx *dev = fe->dvb->priv;
218 return em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
220 return em28xx_set_mode(dev, EM28XX_SUSPEND);
223 /* ------------------------------------------------------------------ */
225 static struct lgdt330x_config em2880_lgdt3303_dev = {
226 .demod_address = 0x0e,
227 .demod_chip = LGDT3303,
230 static struct zl10353_config em28xx_zl10353_with_xc3028 = {
231 .demod_address = (0x1e >> 1),
237 static struct s5h1409_config em28xx_s5h1409_with_xc3028 = {
238 .demod_address = 0x32 >> 1,
239 .output_mode = S5H1409_PARALLEL_OUTPUT,
240 .gpio = S5H1409_GPIO_OFF,
241 .inversion = S5H1409_INVERSION_OFF,
242 .status_mode = S5H1409_DEMODLOCKING,
243 .mpeg_timing = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK
246 #ifdef EM28XX_DRX397XD_SUPPORT
247 /* [TODO] djh - not sure yet what the device config needs to contain */
248 static struct drx397xD_config em28xx_drx397xD_with_xc3028 = {
249 .demod_address = (0xe0 >> 1),
253 /* ------------------------------------------------------------------ */
255 static int attach_xc3028(u8 addr, struct em28xx *dev)
257 struct dvb_frontend *fe;
258 struct xc2028_config cfg;
260 memset(&cfg, 0, sizeof(cfg));
261 cfg.i2c_adap = &dev->i2c_adap;
264 if (!dev->dvb->frontend) {
265 printk(KERN_ERR "%s/2: dvb frontend not attached. "
266 "Can't attach xc3028\n",
271 fe = dvb_attach(xc2028_attach, dev->dvb->frontend, &cfg);
273 printk(KERN_ERR "%s/2: xc3028 attach failed\n",
275 dvb_frontend_detach(dev->dvb->frontend);
276 dev->dvb->frontend = NULL;
280 printk(KERN_INFO "%s/2: xc3028 attached\n", dev->name);
285 /* ------------------------------------------------------------------ */
287 static int register_dvb(struct em28xx_dvb *dvb,
288 struct module *module,
290 struct device *device)
294 mutex_init(&dvb->lock);
296 /* register adapter */
297 result = dvb_register_adapter(&dvb->adapter, dev->name, module, device,
300 printk(KERN_WARNING "%s: dvb_register_adapter failed (errno = %d)\n",
305 /* Ensure all frontends negotiate bus access */
306 dvb->frontend->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
308 dvb->adapter.priv = dev;
310 /* register frontend */
311 result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
313 printk(KERN_WARNING "%s: dvb_register_frontend failed (errno = %d)\n",
318 /* register demux stuff */
319 dvb->demux.dmx.capabilities =
320 DMX_TS_FILTERING | DMX_SECTION_FILTERING |
321 DMX_MEMORY_BASED_FILTERING;
322 dvb->demux.priv = dvb;
323 dvb->demux.filternum = 256;
324 dvb->demux.feednum = 256;
325 dvb->demux.start_feed = start_feed;
326 dvb->demux.stop_feed = stop_feed;
328 result = dvb_dmx_init(&dvb->demux);
330 printk(KERN_WARNING "%s: dvb_dmx_init failed (errno = %d)\n",
335 dvb->dmxdev.filternum = 256;
336 dvb->dmxdev.demux = &dvb->demux.dmx;
337 dvb->dmxdev.capabilities = 0;
338 result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
340 printk(KERN_WARNING "%s: dvb_dmxdev_init failed (errno = %d)\n",
345 dvb->fe_hw.source = DMX_FRONTEND_0;
346 result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
348 printk(KERN_WARNING "%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
353 dvb->fe_mem.source = DMX_MEMORY_FE;
354 result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
356 printk(KERN_WARNING "%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
361 result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
363 printk(KERN_WARNING "%s: connect_frontend failed (errno = %d)\n",
368 /* register network adapter */
369 dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
373 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
375 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
377 dvb_dmxdev_release(&dvb->dmxdev);
379 dvb_dmx_release(&dvb->demux);
381 dvb_unregister_frontend(dvb->frontend);
383 dvb_frontend_detach(dvb->frontend);
384 dvb_unregister_adapter(&dvb->adapter);
389 static void unregister_dvb(struct em28xx_dvb *dvb)
391 dvb_net_release(&dvb->net);
392 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
393 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
394 dvb_dmxdev_release(&dvb->dmxdev);
395 dvb_dmx_release(&dvb->demux);
396 dvb_unregister_frontend(dvb->frontend);
397 dvb_frontend_detach(dvb->frontend);
398 dvb_unregister_adapter(&dvb->adapter);
402 static int dvb_init(struct em28xx *dev)
405 struct em28xx_dvb *dvb;
407 if (!dev->board.has_dvb) {
408 /* This device does not support the extension */
412 dvb = kzalloc(sizeof(struct em28xx_dvb), GFP_KERNEL);
415 printk(KERN_INFO "em28xx_dvb: memory allocation failed\n");
420 em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
422 switch (dev->model) {
423 case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850:
424 case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950:
425 case EM2880_BOARD_PINNACLE_PCTV_HD_PRO:
426 case EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600:
427 dvb->frontend = dvb_attach(lgdt330x_attach,
428 &em2880_lgdt3303_dev,
430 if (attach_xc3028(0x61, dev) < 0) {
435 case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
436 case EM2880_BOARD_TERRATEC_HYBRID_XS:
437 case EM2880_BOARD_KWORLD_DVB_310U:
438 case EM2880_BOARD_EMPIRE_DUAL_TV:
439 dvb->frontend = dvb_attach(zl10353_attach,
440 &em28xx_zl10353_with_xc3028,
442 if (attach_xc3028(0x61, dev) < 0) {
447 case EM2883_BOARD_KWORLD_HYBRID_330U:
448 case EM2882_BOARD_EVGA_INDTUBE:
449 dvb->frontend = dvb_attach(s5h1409_attach,
450 &em28xx_s5h1409_with_xc3028,
452 if (attach_xc3028(0x61, dev) < 0) {
457 case EM2882_BOARD_KWORLD_ATSC_315U:
458 dvb->frontend = dvb_attach(lgdt330x_attach,
459 &em2880_lgdt3303_dev,
461 if (dvb->frontend != NULL) {
462 if (!dvb_attach(simple_tuner_attach, dvb->frontend,
463 &dev->i2c_adap, 0x61, TUNER_THOMSON_DTT761X)) {
469 case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2:
470 #ifdef EM28XX_DRX397XD_SUPPORT
471 /* We don't have the config structure properly populated, so
472 this is commented out for now */
473 dvb->frontend = dvb_attach(drx397xD_attach,
474 &em28xx_drx397xD_with_xc3028,
476 if (attach_xc3028(0x61, dev) < 0) {
483 printk(KERN_ERR "%s/2: The frontend of your DVB/ATSC card"
484 " isn't supported yet\n",
488 if (NULL == dvb->frontend) {
490 "%s/2: frontend initialization failed\n",
495 /* define general-purpose callback pointer */
496 dvb->frontend->callback = em28xx_tuner_callback;
498 /* register everything */
499 result = register_dvb(dvb, THIS_MODULE, dev, &dev->udev->dev);
504 em28xx_set_mode(dev, EM28XX_SUSPEND);
505 printk(KERN_INFO "Successfully loaded em28xx-dvb\n");
509 em28xx_set_mode(dev, EM28XX_SUSPEND);
515 static int dvb_fini(struct em28xx *dev)
517 if (!dev->board.has_dvb) {
518 /* This device does not support the extension */
523 unregister_dvb(dev->dvb);
530 static struct em28xx_ops dvb_ops = {
532 .name = "Em28xx dvb Extension",
537 static int __init em28xx_dvb_register(void)
539 return em28xx_register_extension(&dvb_ops);
542 static void __exit em28xx_dvb_unregister(void)
544 em28xx_unregister_extension(&dvb_ops);
547 module_init(em28xx_dvb_register);
548 module_exit(em28xx_dvb_unregister);